luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2024-11-10 11:26:16 +01:00
Code Issues Packages Projects Releases Wiki Activity
552f62a059
glib/glib/gkeyfile.c
Emmanuele Bassi 5e7c512609 docs: Fix various invalid links
2023-10-23 10:25:31 +01:00

4715 lines
124 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* gkeyfile.c - key file parser
*
* Copyright 2004 Red Hat, Inc.
* Copyright 2009-2010 Collabora Ltd.
* Copyright 2009 Nokia Corporation
*
* Written by Ray Strode <rstrode@redhat.com>
* Matthias Clasen <mclasen@redhat.com>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gkeyfile.h"
#include "gutils.h"
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef G_OS_UNIX
#include <unistd.h>
#endif
#ifdef G_OS_WIN32
#include <io.h>
#undef fstat
#define fstat(a,b) _fstati64(a,b)
#undef stat
#define stat _stati64
#ifndef S_ISREG
#define S_ISREG(mode) ((mode)&_S_IFREG)
#endif
#endif /* G_OS_WIN23 */
#ifndef O_CLOEXEC
#define O_CLOEXEC 0
#endif
#include "gconvert.h"
#include "gdataset.h"
#include "gerror.h"
#include "gfileutils.h"
#include "ghash.h"
#include "glibintl.h"
#include "glist.h"
#include "gslist.h"
#include "gmem.h"
#include "gmessages.h"
#include "gstdio.h"
#include "gstring.h"
#include "gstrfuncs.h"
#include "gutils.h"
/**
* GKeyFile:
*
* `GKeyFile` parses .ini-like config files.
*
* `GKeyFile` lets you parse, edit or create files containing groups of
* key-value pairs, which we call "key files" for lack of a better name.
* Several freedesktop.org specifications use key files now, e.g the
* [Desktop Entry Specification](http://freedesktop.org/Standards/desktop-entry-spec)
* and the [Icon Theme Specification](http://freedesktop.org/Standards/icon-theme-spec).
*
* The syntax of key files is described in detail in the
* [Desktop Entry Specification](http://freedesktop.org/Standards/desktop-entry-spec),
* here is a quick summary: Key files consists of groups of key-value pairs, interspersed
* with comments.
*
* ```txt
* # this is just an example
* # there can be comments before the first group
*
* [First Group]
*
* Name=Key File Example\tthis value shows\nescaping
*
* # localized strings are stored in multiple key-value pairs
* Welcome=Hello
* Welcome[de]=Hallo
* Welcome[fr_FR]=Bonjour
* Welcome[it]=Ciao
*
* [Another Group]
*
* Numbers=2;20;-200;0
*
* Booleans=true;false;true;true
* ```
*
* Lines beginning with a '#' and blank lines are considered comments.
*
* Groups are started by a header line containing the group name enclosed
* in '[' and ']', and ended implicitly by the start of the next group or
* the end of the file. Each key-value pair must be contained in a group.
*
* Key-value pairs generally have the form `key=value`, with the exception
* of localized strings, which have the form `key[locale]=value`, with a
* locale identifier of the form `lang_COUNTRY@MODIFIER` where `COUNTRY`
* and `MODIFIER` are optional. Space before and after the '=' character
* are ignored. Newline, tab, carriage return and backslash characters in
* value are escaped as `\n`, `\t`, `\r`, and `\\\\`, respectively. To preserve
* leading spaces in values, these can also be escaped as `\s`.
*
* Key files can store strings (possibly with localized variants), integers,
* booleans and lists of these. Lists are separated by a separator character,
* typically ';' or ','. To use the list separator character in a value in
* a list, it has to be escaped by prefixing it with a backslash.
*
* This syntax is obviously inspired by the .ini files commonly met
* on Windows, but there are some important differences:
*
* - .ini files use the ';' character to begin comments,
* key files use the '#' character.
*
* - Key files do not allow for ungrouped keys meaning only
* comments can precede the first group.
*
* - Key files are always encoded in UTF-8.
*
* - Key and Group names are case-sensitive. For example, a group called
* [GROUP] is a different from [group].
*
* - .ini files don't have a strongly typed boolean entry type,
* they only have GetProfileInt(). In key files, only
* true and false (in lower case) are allowed.
*
* Note that in contrast to the
* [Desktop Entry Specification](http://freedesktop.org/Standards/desktop-entry-spec),
* groups in key files may contain the same key multiple times; the last entry wins.
* Key files may also contain multiple groups with the same name; they are merged
* together. Another difference is that keys and group names in key files are not
* restricted to ASCII characters.
*
* Here is an example of loading a key file and reading a value:
*
* ```c
* g_autoptr(GError) error = NULL;
* g_autoptr(GKeyFile) key_file = g_key_file_new ();
*
* if (!g_key_file_load_from_file (key_file, "key-file.ini", flags, &error))
* {
* if (!g_error_matches (error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
* g_warning ("Error loading key file: %s", error->message);
* return;
* }
*
* g_autofree gchar *val = g_key_file_get_string (key_file, "Group Name", "SomeKey", &error);
* if (val == NULL &&
* !g_error_matches (error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_KEY_NOT_FOUND))
* {
* g_warning ("Error finding key in key file: %s", error->message);
* return;
* }
* else if (val == NULL)
* {
* // Fall back to a default value.
* val = g_strdup ("default-value");
* }
* ```
*
* Here is an example of creating and saving a key file:
*
* ```c
* g_autoptr(GKeyFile) key_file = g_key_file_new ();
* const gchar *val = …;
* g_autoptr(GError) error = NULL;
*
* g_key_file_set_string (key_file, "Group Name", "SomeKey", val);
*
* // Save as a file.
* if (!g_key_file_save_to_file (key_file, "key-file.ini", &error))
* {
* g_warning ("Error saving key file: %s", error->message);
* return;
* }
*
* // Or store to a GBytes for use elsewhere.
* gsize data_len;
* g_autofree guint8 *data = (guint8 *) g_key_file_to_data (key_file, &data_len, &error);
* if (data == NULL)
* {
* g_warning ("Error saving key file: %s", error->message);
* return;
* }
* g_autoptr(GBytes) bytes = g_bytes_new_take (g_steal_pointer (&data), data_len);
* ```
*/
/**
* G_KEY_FILE_ERROR:
*
* Error domain for key file parsing. Errors in this domain will
* be from the #GKeyFileError enumeration.
*
* See #GError for information on error domains.
*/
/**
* GKeyFileError:
* @G_KEY_FILE_ERROR_UNKNOWN_ENCODING: the text being parsed was in
* an unknown encoding
* @G_KEY_FILE_ERROR_PARSE: document was ill-formed
* @G_KEY_FILE_ERROR_NOT_FOUND: the file was not found
* @G_KEY_FILE_ERROR_KEY_NOT_FOUND: a requested key was not found
* @G_KEY_FILE_ERROR_GROUP_NOT_FOUND: a requested group was not found
* @G_KEY_FILE_ERROR_INVALID_VALUE: a value could not be parsed
*
* Error codes returned by key file parsing.
*/
/**
* GKeyFileFlags:
* @G_KEY_FILE_NONE: No flags, default behaviour
* @G_KEY_FILE_KEEP_COMMENTS: Use this flag if you plan to write the
* (possibly modified) contents of the key file back to a file;
* otherwise all comments will be lost when the key file is
* written back.
* @G_KEY_FILE_KEEP_TRANSLATIONS: Use this flag if you plan to write the
* (possibly modified) contents of the key file back to a file;
* otherwise only the translations for the current language will be
* written back.
*
* Flags which influence the parsing.
*/
/**
* G_KEY_FILE_DESKTOP_GROUP:
*
* The name of the main group of a desktop entry file, as defined in the
* [Desktop Entry Specification](http://freedesktop.org/Standards/desktop-entry-spec).
* Consult the specification for more
* details about the meanings of the keys below.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_TYPE:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string
* giving the type of the desktop entry.
*
* Usually %G_KEY_FILE_DESKTOP_TYPE_APPLICATION,
* %G_KEY_FILE_DESKTOP_TYPE_LINK, or
* %G_KEY_FILE_DESKTOP_TYPE_DIRECTORY.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_VERSION:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string
* giving the version of the Desktop Entry Specification used for
* the desktop entry file.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_NAME:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a localized
* string giving the specific name of the desktop entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_GENERIC_NAME:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a localized
* string giving the generic name of the desktop entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_NO_DISPLAY:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a boolean
* stating whether the desktop entry should be shown in menus.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_COMMENT:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a localized
* string giving the tooltip for the desktop entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_ICON:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a localized
* string giving the name of the icon to be displayed for the desktop
* entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_HIDDEN:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a boolean
* stating whether the desktop entry has been deleted by the user.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_ONLY_SHOW_IN:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a list of
* strings identifying the environments that should display the
* desktop entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_NOT_SHOW_IN:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a list of
* strings identifying the environments that should not display the
* desktop entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_TRY_EXEC:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string
* giving the file name of a binary on disk used to determine if the
* program is actually installed. It is only valid for desktop entries
* with the `Application` type.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_EXEC:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string
* giving the command line to execute. It is only valid for desktop
* entries with the `Application` type.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_PATH:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string
* containing the working directory to run the program in. It is only
* valid for desktop entries with the `Application` type.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_TERMINAL:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a boolean
* stating whether the program should be run in a terminal window.
*
* It is only valid for desktop entries with the `Application` type.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_MIME_TYPE:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a list
* of strings giving the MIME types supported by this desktop entry.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_CATEGORIES:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a list
* of strings giving the categories in which the desktop entry
* should be shown in a menu.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_STARTUP_NOTIFY:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a boolean
* stating whether the application supports the
* [Startup Notification Protocol Specification](http://www.freedesktop.org/Standards/startup-notification-spec).
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_STARTUP_WM_CLASS:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is string
* identifying the WM class or name hint of a window that the application
* will create, which can be used to emulate Startup Notification with
* older applications.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_URL:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string
* giving the URL to access. It is only valid for desktop entries
* with the `Link` type.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_KEY_DBUS_ACTIVATABLE:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a boolean
* set to true if the application is D-Bus activatable.
*
* Since: 2.38
*/
/**
* G_KEY_FILE_DESKTOP_KEY_ACTIONS:
*
* A key under %G_KEY_FILE_DESKTOP_GROUP, whose value is a string list
* giving the available application actions.
*
* Since: 2.38
*/
/**
* G_KEY_FILE_DESKTOP_TYPE_APPLICATION:
*
* The value of the %G_KEY_FILE_DESKTOP_KEY_TYPE, key for desktop
* entries representing applications.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_TYPE_LINK:
*
* The value of the %G_KEY_FILE_DESKTOP_KEY_TYPE, key for desktop
* entries representing links to documents.
*
* Since: 2.14
*/
/**
* G_KEY_FILE_DESKTOP_TYPE_DIRECTORY:
*
* The value of the %G_KEY_FILE_DESKTOP_KEY_TYPE, key for desktop
* entries representing directories.
*
* Since: 2.14
*/
typedef struct _GKeyFileGroup GKeyFileGroup;
struct _GKeyFile
{
GList *groups;
GHashTable *group_hash;
GKeyFileGroup *start_group;
GKeyFileGroup *current_group;
GString *parse_buffer; /* Holds up to one line of not-yet-parsed data */
gchar list_separator;
GKeyFileFlags flags;
gboolean checked_locales; /* TRUE if @locales has been initialised */
gchar **locales; /* (nullable) */
gint ref_count; /* (atomic) */
};
typedef struct _GKeyFileKeyValuePair GKeyFileKeyValuePair;
struct _GKeyFileGroup
{
const gchar *name; /* NULL for above first group (which will be comments) */
GList *key_value_pairs;
/* Used in parallel with key_value_pairs for
* increased lookup performance
*/
GHashTable *lookup_map;
};
struct _GKeyFileKeyValuePair
{
gchar *key; /* NULL for comments */
gchar *value;
};
static gint find_file_in_data_dirs (const gchar *file,
const gchar **data_dirs,
gchar **output_file,
GError **error);
static gboolean g_key_file_load_from_fd (GKeyFile *key_file,
gint fd,
GKeyFileFlags flags,
GError **error);
static GList *g_key_file_lookup_group_node (GKeyFile *key_file,
const gchar *group_name);
static GKeyFileGroup *g_key_file_lookup_group (GKeyFile *key_file,
const gchar *group_name);
static GList *g_key_file_lookup_key_value_pair_node (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key);
static GKeyFileKeyValuePair *g_key_file_lookup_key_value_pair (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key);
static void g_key_file_remove_group_node (GKeyFile *key_file,
GList *group_node);
static void g_key_file_remove_key_value_pair_node (GKeyFile *key_file,
GKeyFileGroup *group,
GList *pair_node);
static void g_key_file_add_key_value_pair (GKeyFile *key_file,
GKeyFileGroup *group,
GKeyFileKeyValuePair *pair,
GList *sibling);
static void g_key_file_add_key (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key,
const gchar *value);
static void g_key_file_add_group (GKeyFile *key_file,
const gchar *group_name,
gboolean created);
static gboolean g_key_file_is_group_name (const gchar *name);
static gboolean g_key_file_is_key_name (const gchar *name,
gsize len);
static void g_key_file_key_value_pair_free (GKeyFileKeyValuePair *pair);
static gboolean g_key_file_line_is_comment (const gchar *line);
static gboolean g_key_file_line_is_group (const gchar *line);
static gboolean g_key_file_line_is_key_value_pair (const gchar *line);
static gchar *g_key_file_parse_value_as_string (GKeyFile *key_file,
const gchar *value,
GSList **separators,
GError **error);
static gchar *g_key_file_parse_string_as_value (GKeyFile *key_file,
const gchar *string,
gboolean escape_separator);
static gint g_key_file_parse_value_as_integer (GKeyFile *key_file,
const gchar *value,
GError **error);
static gchar *g_key_file_parse_integer_as_value (GKeyFile *key_file,
gint value);
static gdouble g_key_file_parse_value_as_double (GKeyFile *key_file,
const gchar *value,
GError **error);
static gboolean g_key_file_parse_value_as_boolean (GKeyFile *key_file,
const gchar *value,
GError **error);
static const gchar *g_key_file_parse_boolean_as_value (GKeyFile *key_file,
gboolean value);
static gchar *g_key_file_parse_value_as_comment (GKeyFile *key_file,
const gchar *value,
gboolean is_final_line);
static gchar *g_key_file_parse_comment_as_value (GKeyFile *key_file,
const gchar *comment);
static void g_key_file_parse_key_value_pair (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error);
static void g_key_file_parse_comment (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error);
static void g_key_file_parse_group (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error);
static const gchar *key_get_locale (const gchar *key,
gsize *len_out);
static void g_key_file_parse_data (GKeyFile *key_file,
const gchar *data,
gsize length,
GError **error);
static void g_key_file_flush_parse_buffer (GKeyFile *key_file,
GError **error);
G_DEFINE_QUARK (g-key-file-error-quark, g_key_file_error)
static void
g_key_file_init (GKeyFile *key_file)
{
key_file->current_group = g_new0 (GKeyFileGroup, 1);
key_file->groups = g_list_prepend (NULL, key_file->current_group);
key_file->group_hash = NULL;
key_file->start_group = NULL;
key_file->parse_buffer = NULL;
key_file->list_separator = ';';
key_file->flags = 0;
}
static void
g_key_file_clear (GKeyFile *key_file)
{
GList *tmp, *group_node;
if (key_file->locales)
{
g_strfreev (key_file->locales);
key_file->locales = NULL;
}
key_file->checked_locales = FALSE;
if (key_file->parse_buffer)
{
g_string_free (key_file->parse_buffer, TRUE);
key_file->parse_buffer = NULL;
}
tmp = key_file->groups;
while (tmp != NULL)
{
group_node = tmp;
tmp = tmp->next;
g_key_file_remove_group_node (key_file, group_node);
}
if (key_file->group_hash != NULL)
{
g_hash_table_destroy (key_file->group_hash);
key_file->group_hash = NULL;
}
g_warn_if_fail (key_file->groups == NULL);
}
/**
* g_key_file_new:
*
* Creates a new empty #GKeyFile object. Use
* g_key_file_load_from_file(), g_key_file_load_from_data(),
* g_key_file_load_from_dirs() or g_key_file_load_from_data_dirs() to
* read an existing key file.
*
* Returns: (transfer full): an empty #GKeyFile.
*
* Since: 2.6
**/
GKeyFile *
g_key_file_new (void)
{
GKeyFile *key_file;
key_file = g_new0 (GKeyFile, 1);
key_file->ref_count = 1;
g_key_file_init (key_file);
return key_file;
}
/**
* g_key_file_set_list_separator:
* @key_file: a #GKeyFile
* @separator: the separator
*
* Sets the character which is used to separate
* values in lists. Typically ';' or ',' are used
* as separators. The default list separator is ';'.
*
* Since: 2.6
*/
void
g_key_file_set_list_separator (GKeyFile *key_file,
gchar separator)
{
g_return_if_fail (key_file != NULL);
key_file->list_separator = separator;
}
/* Iterates through all the directories in *dirs trying to
* open file. When it successfully locates and opens a file it
* returns the file descriptor to the open file. It also
* outputs the absolute path of the file in output_file.
*/
static gint
find_file_in_data_dirs (const gchar *file,
const gchar **dirs,
gchar **output_file,
GError **error)
{
const gchar **data_dirs, *data_dir;
gchar *path;
gint fd;
path = NULL;
fd = -1;
if (dirs == NULL)
return fd;
data_dirs = dirs;
while (data_dirs && (data_dir = *data_dirs) && fd == -1)
{
const gchar *candidate_file;
gchar *sub_dir;
candidate_file = file;
sub_dir = g_strdup ("");
while (candidate_file != NULL && fd == -1)
{
gchar *p;
path = g_build_filename (data_dir, sub_dir,
candidate_file, NULL);
fd = g_open (path, O_RDONLY | O_CLOEXEC, 0);
if (fd == -1)
{
g_free (path);
path = NULL;
}
candidate_file = strchr (candidate_file, '-');
if (candidate_file == NULL)
break;
candidate_file++;
g_free (sub_dir);
sub_dir = g_strndup (file, candidate_file - file - 1);
for (p = sub_dir; *p != '\0'; p++)
{
if (*p == '-')
*p = G_DIR_SEPARATOR;
}
}
g_free (sub_dir);
data_dirs++;
}
if (fd == -1)
{
g_set_error_literal (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_NOT_FOUND,
_("Valid key file could not be "
"found in search dirs"));
}
if (output_file != NULL && fd != -1)
*output_file = g_strdup (path);
g_free (path);
return fd;
}
static gboolean
g_key_file_load_from_fd (GKeyFile *key_file,
gint fd,
GKeyFileFlags flags,
GError **error)
{
GError *key_file_error = NULL;
gssize bytes_read;
struct stat stat_buf;
gchar read_buf[4096];
gchar list_separator;
if (fstat (fd, &stat_buf) < 0)
{
int errsv = errno;
g_set_error_literal (error, G_FILE_ERROR,
g_file_error_from_errno (errsv),
g_strerror (errsv));
return FALSE;
}
if (!S_ISREG (stat_buf.st_mode))
{
g_set_error_literal (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_PARSE,
_("Not a regular file"));
return FALSE;
}
list_separator = key_file->list_separator;
g_key_file_clear (key_file);
g_key_file_init (key_file);
key_file->list_separator = list_separator;
key_file->flags = flags;
do
{
int errsv;
bytes_read = read (fd, read_buf, 4096);
errsv = errno;
if (bytes_read == 0) /* End of File */
break;
if (bytes_read < 0)
{
if (errsv == EINTR || errsv == EAGAIN)
continue;
g_set_error_literal (error, G_FILE_ERROR,
g_file_error_from_errno (errsv),
g_strerror (errsv));
return FALSE;
}
g_key_file_parse_data (key_file,
read_buf, bytes_read,
&key_file_error);
}
while (!key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return FALSE;
}
g_key_file_flush_parse_buffer (key_file, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return FALSE;
}
return TRUE;
}
/**
* g_key_file_load_from_file:
* @key_file: an empty #GKeyFile struct
* @file: (type filename): the path of a filename to load, in the GLib filename encoding
* @flags: flags from #GKeyFileFlags
* @error: return location for a #GError, or %NULL
*
* Loads a key file into an empty #GKeyFile structure.
*
* If the OS returns an error when opening or reading the file, a
* %G_FILE_ERROR is returned. If there is a problem parsing the file, a
* %G_KEY_FILE_ERROR is returned.
*
* This function will never return a %G_KEY_FILE_ERROR_NOT_FOUND error. If the
* @file is not found, %G_FILE_ERROR_NOENT is returned.
*
* Returns: %TRUE if a key file could be loaded, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_load_from_file (GKeyFile *key_file,
const gchar *file,
GKeyFileFlags flags,
GError **error)
{
GError *key_file_error = NULL;
gint fd;
int errsv;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (file != NULL, FALSE);
fd = g_open (file, O_RDONLY | O_CLOEXEC, 0);
errsv = errno;
if (fd == -1)
{
g_set_error_literal (error, G_FILE_ERROR,
g_file_error_from_errno (errsv),
g_strerror (errsv));
return FALSE;
}
g_key_file_load_from_fd (key_file, fd, flags, &key_file_error);
close (fd);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return FALSE;
}
return TRUE;
}
/**
* g_key_file_load_from_data:
* @key_file: an empty #GKeyFile struct
* @data: key file loaded in memory
* @length: the length of @data in bytes (or (gsize)-1 if data is nul-terminated)
* @flags: flags from #GKeyFileFlags
* @error: return location for a #GError, or %NULL
*
* Loads a key file from memory into an empty #GKeyFile structure.
* If the object cannot be created then %error is set to a #GKeyFileError.
*
* Returns: %TRUE if a key file could be loaded, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_load_from_data (GKeyFile *key_file,
const gchar *data,
gsize length,
GKeyFileFlags flags,
GError **error)
{
GError *key_file_error = NULL;
gchar list_separator;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (data != NULL || length == 0, FALSE);
if (length == (gsize)-1)
length = strlen (data);
list_separator = key_file->list_separator;
g_key_file_clear (key_file);
g_key_file_init (key_file);
key_file->list_separator = list_separator;
key_file->flags = flags;
g_key_file_parse_data (key_file, data, length, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return FALSE;
}
g_key_file_flush_parse_buffer (key_file, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return FALSE;
}
return TRUE;
}
/**
* g_key_file_load_from_bytes:
* @key_file: an empty #GKeyFile struct
* @bytes: a #GBytes
* @flags: flags from #GKeyFileFlags
* @error: return location for a #GError, or %NULL
*
* Loads a key file from the data in @bytes into an empty #GKeyFile structure.
* If the object cannot be created then %error is set to a #GKeyFileError.
*
* Returns: %TRUE if a key file could be loaded, %FALSE otherwise
*
* Since: 2.50
**/
gboolean
g_key_file_load_from_bytes (GKeyFile *key_file,
GBytes *bytes,
GKeyFileFlags flags,
GError **error)
{
const guchar *data;
gsize size;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (bytes != NULL, FALSE);
data = g_bytes_get_data (bytes, &size);
return g_key_file_load_from_data (key_file, (const gchar *) data, size, flags, error);
}
/**
* g_key_file_load_from_dirs:
* @key_file: an empty #GKeyFile struct
* @file: (type filename): a relative path to a filename to open and parse
* @search_dirs: (array zero-terminated=1) (element-type filename): %NULL-terminated array of directories to search
* @full_path: (out) (type filename) (optional): return location for a string containing the full path
* of the file, or %NULL
* @flags: flags from #GKeyFileFlags
* @error: return location for a #GError, or %NULL
*
* This function looks for a key file named @file in the paths
* specified in @search_dirs, loads the file into @key_file and
* returns the file's full path in @full_path.
*
* If the file could not be found in any of the @search_dirs,
* %G_KEY_FILE_ERROR_NOT_FOUND is returned. If
* the file is found but the OS returns an error when opening or reading the
* file, a %G_FILE_ERROR is returned. If there is a problem parsing the file, a
* %G_KEY_FILE_ERROR is returned.
*
* Returns: %TRUE if a key file could be loaded, %FALSE otherwise
*
* Since: 2.14
**/
gboolean
g_key_file_load_from_dirs (GKeyFile *key_file,
const gchar *file,
const gchar **search_dirs,
gchar **full_path,
GKeyFileFlags flags,
GError **error)
{
GError *key_file_error = NULL;
const gchar **data_dirs;
gchar *output_path;
gint fd;
gboolean found_file;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (!g_path_is_absolute (file), FALSE);
g_return_val_if_fail (search_dirs != NULL, FALSE);
found_file = FALSE;
data_dirs = search_dirs;
output_path = NULL;
while (*data_dirs != NULL && !found_file)
{
g_free (output_path);
output_path = NULL;
fd = find_file_in_data_dirs (file, data_dirs, &output_path,
&key_file_error);
if (fd == -1)
{
if (key_file_error)
g_propagate_error (error, key_file_error);
break;
}
found_file = g_key_file_load_from_fd (key_file, fd, flags,
&key_file_error);
close (fd);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
break;
}
}
if (found_file && full_path)
*full_path = output_path;
else
g_free (output_path);
return found_file;
}
/**
* g_key_file_load_from_data_dirs:
* @key_file: an empty #GKeyFile struct
* @file: (type filename): a relative path to a filename to open and parse
* @full_path: (out) (type filename) (optional): return location for a string containing the full path
* of the file, or %NULL
* @flags: flags from #GKeyFileFlags
* @error: return location for a #GError, or %NULL
*
* This function looks for a key file named @file in the paths
* returned from g_get_user_data_dir() and g_get_system_data_dirs(),
* loads the file into @key_file and returns the file's full path in
* @full_path. If the file could not be loaded then an %error is
* set to either a #GFileError or #GKeyFileError.
*
* Returns: %TRUE if a key file could be loaded, %FALSE otherwise
* Since: 2.6
**/
gboolean
g_key_file_load_from_data_dirs (GKeyFile *key_file,
const gchar *file,
gchar **full_path,
GKeyFileFlags flags,
GError **error)
{
gchar **all_data_dirs;
const gchar * user_data_dir;
const gchar * const * system_data_dirs;
gsize i, j;
gboolean found_file;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (!g_path_is_absolute (file), FALSE);
user_data_dir = g_get_user_data_dir ();
system_data_dirs = g_get_system_data_dirs ();
all_data_dirs = g_new (gchar *, g_strv_length ((gchar **)system_data_dirs) + 2);
i = 0;
all_data_dirs[i++] = g_strdup (user_data_dir);
j = 0;
while (system_data_dirs[j] != NULL)
all_data_dirs[i++] = g_strdup (system_data_dirs[j++]);
all_data_dirs[i] = NULL;
found_file = g_key_file_load_from_dirs (key_file,
file,
(const gchar **)all_data_dirs,
full_path,
flags,
error);
g_strfreev (all_data_dirs);
return found_file;
}
/**
* g_key_file_ref: (skip)
* @key_file: a #GKeyFile
*
* Increases the reference count of @key_file.
*
* Returns: the same @key_file.
*
* Since: 2.32
**/
GKeyFile *
g_key_file_ref (GKeyFile *key_file)
{
g_return_val_if_fail (key_file != NULL, NULL);
g_atomic_int_inc (&key_file->ref_count);
return key_file;
}
/**
* g_key_file_free: (skip)
* @key_file: a #GKeyFile
*
* Clears all keys and groups from @key_file, and decreases the
* reference count by 1. If the reference count reaches zero,
* frees the key file and all its allocated memory.
*
* Since: 2.6
**/
void
g_key_file_free (GKeyFile *key_file)
{
g_return_if_fail (key_file != NULL);
g_key_file_clear (key_file);
if (g_atomic_int_dec_and_test (&key_file->ref_count))
g_free_sized (key_file, sizeof (GKeyFile));
else
g_key_file_init (key_file);
}
/**
* g_key_file_unref:
* @key_file: a #GKeyFile
*
* Decreases the reference count of @key_file by 1. If the reference count
* reaches zero, frees the key file and all its allocated memory.
*
* Since: 2.32
**/
void
g_key_file_unref (GKeyFile *key_file)
{
g_return_if_fail (key_file != NULL);
if (g_atomic_int_dec_and_test (&key_file->ref_count))
{
g_key_file_clear (key_file);
g_free_sized (key_file, sizeof (GKeyFile));
}
}
/* If G_KEY_FILE_KEEP_TRANSLATIONS is not set, only returns
* true for locales that match those in g_get_language_names().
*/
static gboolean
g_key_file_locale_is_interesting (GKeyFile *key_file,
const gchar *locale,
gsize locale_len)
{
gsize i;
if (key_file->flags & G_KEY_FILE_KEEP_TRANSLATIONS)
return TRUE;
if (!key_file->checked_locales)
{
g_assert (key_file->locales == NULL);
key_file->locales = g_strdupv ((gchar **)g_get_language_names ());
key_file->checked_locales = TRUE;
}
for (i = 0; key_file->locales[i] != NULL; i++)
{
if (g_ascii_strncasecmp (key_file->locales[i], locale, locale_len) == 0 &&
key_file->locales[i][locale_len] == '\0')
return TRUE;
}
return FALSE;
}
static void
g_key_file_parse_line (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error)
{
GError *parse_error = NULL;
const gchar *line_start;
g_return_if_fail (key_file != NULL);
g_return_if_fail (line != NULL);
line_start = line;
while (g_ascii_isspace (*line_start))
line_start++;
if (g_key_file_line_is_comment (line_start))
g_key_file_parse_comment (key_file, line, length, &parse_error);
else if (g_key_file_line_is_group (line_start))
g_key_file_parse_group (key_file, line_start,
length - (line_start - line),
&parse_error);
else if (g_key_file_line_is_key_value_pair (line_start))
g_key_file_parse_key_value_pair (key_file, line_start,
length - (line_start - line),
&parse_error);
else
{
gchar *line_utf8 = g_utf8_make_valid (line, length);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_PARSE,
_("Key file contains line “%s” which is not "
"a key-value pair, group, or comment"),
line_utf8);
g_free (line_utf8);
return;
}
if (parse_error)
g_propagate_error (error, parse_error);
}
static void
g_key_file_parse_comment (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error)
{
GKeyFileKeyValuePair *pair;
if (!(key_file->flags & G_KEY_FILE_KEEP_COMMENTS))
return;
g_warn_if_fail (key_file->current_group != NULL);
pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = NULL;
pair->value = g_strndup (line, length);
key_file->current_group->key_value_pairs =
g_list_prepend (key_file->current_group->key_value_pairs, pair);
}
static void
g_key_file_parse_group (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error)
{
gchar *group_name;
const gchar *group_name_start, *group_name_end;
/* advance past opening '['
*/
group_name_start = line + 1;
group_name_end = line + length - 1;
while (*group_name_end != ']')
group_name_end--;
group_name = g_strndup (group_name_start,
group_name_end - group_name_start);
if (!g_key_file_is_group_name (group_name))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_PARSE,
_("Invalid group name: %s"), group_name);
g_free (group_name);
return;
}
g_key_file_add_group (key_file, group_name, FALSE);
g_free (group_name);
}
static void
g_key_file_parse_key_value_pair (GKeyFile *key_file,
const gchar *line,
gsize length,
GError **error)
{
gchar *key, *key_end, *value_start;
const gchar *locale;
gsize locale_len;
gsize key_len, value_len;
if (key_file->current_group == NULL || key_file->current_group->name == NULL)
{
g_set_error_literal (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not start with a group"));
return;
}
key_end = value_start = strchr (line, '=');
g_warn_if_fail (key_end != NULL);
key_end--;
value_start++;
/* Pull the key name from the line (chomping trailing whitespace)
*/
while (g_ascii_isspace (*key_end))
key_end--;
key_len = key_end - line + 2;
g_warn_if_fail (key_len <= length);
if (!g_key_file_is_key_name (line, key_len - 1))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_PARSE,
_("Invalid key name: %.*s"), (int) key_len - 1, line);
return;
}
key = g_strndup (line, key_len - 1);
/* Pull the value from the line (chugging leading whitespace)
*/
while (g_ascii_isspace (*value_start))
value_start++;
value_len = line + length - value_start;
g_warn_if_fail (key_file->start_group != NULL);
/* Checked on entry to this function */
g_assert (key_file->current_group != NULL);
g_assert (key_file->current_group->name != NULL);
if (key_file->start_group == key_file->current_group
&& strcmp (key, "Encoding") == 0)
{
if (value_len != strlen ("UTF-8") ||
g_ascii_strncasecmp (value_start, "UTF-8", value_len) != 0)
{
gchar *value_utf8 = g_utf8_make_valid (value_start, value_len);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_UNKNOWN_ENCODING,
_("Key file contains unsupported "
"encoding “%s”"), value_utf8);
g_free (value_utf8);
g_free (key);
return;
}
}
/* Is this key a translation? If so, is it one that we care about?
*/
locale = key_get_locale (key, &locale_len);
if (locale == NULL || g_key_file_locale_is_interesting (key_file, locale, locale_len))
{
GKeyFileKeyValuePair *pair;
pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = g_steal_pointer (&key);
pair->value = g_strndup (value_start, value_len);
g_key_file_add_key_value_pair (key_file, key_file->current_group, pair,
key_file->current_group->key_value_pairs);
}
g_free (key);
}
static const gchar *
key_get_locale (const gchar *key,
gsize *len_out)
{
const gchar *locale;
gsize locale_len;
locale = g_strrstr (key, "[");
if (locale != NULL)
locale_len = strlen (locale);
else
locale_len = 0;
if (locale_len > 2)
{
locale++; /* skip `[` */
locale_len -= 2; /* drop `[` and `]` */
}
else
{
locale = NULL;
locale_len = 0;
}
*len_out = locale_len;
return locale;
}
static void
g_key_file_parse_data (GKeyFile *key_file,
const gchar *data,
gsize length,
GError **error)
{
GError *parse_error;
gsize i;
g_return_if_fail (key_file != NULL);
g_return_if_fail (data != NULL || length == 0);
parse_error = NULL;
if (!key_file->parse_buffer)
key_file->parse_buffer = g_string_sized_new (128);
i = 0;
while (i < length)
{
if (data[i] == '\n')
{
if (key_file->parse_buffer->len > 0
&& (key_file->parse_buffer->str[key_file->parse_buffer->len - 1]
== '\r'))
g_string_erase (key_file->parse_buffer,
key_file->parse_buffer->len - 1,
1);
/* When a newline is encountered flush the parse buffer so that the
* line can be parsed. Note that completely blank lines won't show
* up in the parse buffer, so they get parsed directly.
*/
if (key_file->parse_buffer->len > 0)
g_key_file_flush_parse_buffer (key_file, &parse_error);
else
g_key_file_parse_comment (key_file, "", 1, &parse_error);
if (parse_error)
{
g_propagate_error (error, parse_error);
return;
}
i++;
}
else
{
const gchar *start_of_line;
const gchar *end_of_line;
gsize line_length;
start_of_line = data + i;
end_of_line = memchr (start_of_line, '\n', length - i);
if (end_of_line == NULL)
end_of_line = data + length;
line_length = end_of_line - start_of_line;
g_string_append_len (key_file->parse_buffer, start_of_line, line_length);
i += line_length;
}
}
}
static void
g_key_file_flush_parse_buffer (GKeyFile *key_file,
GError **error)
{
GError *file_error = NULL;
g_return_if_fail (key_file != NULL);
if (!key_file->parse_buffer)
return;
file_error = NULL;
if (key_file->parse_buffer->len > 0)
{
g_key_file_parse_line (key_file, key_file->parse_buffer->str,
key_file->parse_buffer->len,
&file_error);
g_string_erase (key_file->parse_buffer, 0, -1);
if (file_error)
{
g_propagate_error (error, file_error);
return;
}
}
}
/**
* g_key_file_to_data:
* @key_file: a #GKeyFile
* @length: (out) (optional): return location for the length of the
* returned string, or %NULL
* @error: return location for a #GError, or %NULL
*
* This function outputs @key_file as a string.
*
* Note that this function never reports an error,
* so it is safe to pass %NULL as @error.
*
* Returns: a newly allocated string holding
* the contents of the #GKeyFile
*
* Since: 2.6
**/
gchar *
g_key_file_to_data (GKeyFile *key_file,
gsize *length,
GError **error)
{
GString *data_string;
GList *group_node, *key_file_node;
g_return_val_if_fail (key_file != NULL, NULL);
data_string = g_string_new (NULL);
for (group_node = g_list_last (key_file->groups);
group_node != NULL;
group_node = group_node->prev)
{
GKeyFileGroup *group;
group = (GKeyFileGroup *) group_node->data;
if (group->name != NULL)
g_string_append_printf (data_string, "[%s]\n", group->name);
for (key_file_node = g_list_last (group->key_value_pairs);
key_file_node != NULL;
key_file_node = key_file_node->prev)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) key_file_node->data;
if (pair->key != NULL)
g_string_append_printf (data_string, "%s=%s\n", pair->key, pair->value);
else
g_string_append_printf (data_string, "%s\n", pair->value);
}
}
if (length)
*length = data_string->len;
return g_string_free (data_string, FALSE);
}
/**
* g_key_file_get_keys:
* @key_file: a #GKeyFile
* @group_name: a group name
* @length: (out) (optional): return location for the number of keys returned, or %NULL
* @error: return location for a #GError, or %NULL
*
* Returns all keys for the group name @group_name. The array of
* returned keys will be %NULL-terminated, so @length may
* optionally be %NULL. In the event that the @group_name cannot
* be found, %NULL is returned and @error is set to
* %G_KEY_FILE_ERROR_GROUP_NOT_FOUND.
*
* Returns: (array zero-terminated=1) (transfer full): a newly-allocated %NULL-terminated array of strings.
* Use g_strfreev() to free it.
*
* Since: 2.6
**/
gchar **
g_key_file_get_keys (GKeyFile *key_file,
const gchar *group_name,
gsize *length,
GError **error)
{
GKeyFileGroup *group;
GList *tmp;
gchar **keys;
gsize i, num_keys;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name);
return NULL;
}
num_keys = 0;
for (tmp = group->key_value_pairs; tmp; tmp = tmp->next)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) tmp->data;
if (pair->key)
num_keys++;
}
keys = g_new (gchar *, num_keys + 1);
i = num_keys - 1;
for (tmp = group->key_value_pairs; tmp; tmp = tmp->next)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) tmp->data;
if (pair->key)
{
keys[i] = g_strdup (pair->key);
i--;
}
}
keys[num_keys] = NULL;
if (length)
*length = num_keys;
return keys;
}
/**
* g_key_file_get_start_group:
* @key_file: a #GKeyFile
*
* Returns the name of the start group of the file.
*
* Returns: (nullable): The start group of the key file.
*
* Since: 2.6
**/
gchar *
g_key_file_get_start_group (GKeyFile *key_file)
{
g_return_val_if_fail (key_file != NULL, NULL);
if (key_file->start_group)
return g_strdup (key_file->start_group->name);
return NULL;
}
/**
* g_key_file_get_groups:
* @key_file: a #GKeyFile
* @length: (out) (optional): return location for the number of returned groups, or %NULL
*
* Returns all groups in the key file loaded with @key_file.
* The array of returned groups will be %NULL-terminated, so
* @length may optionally be %NULL.
*
* Returns: (array zero-terminated=1) (transfer full): a newly-allocated %NULL-terminated array of strings.
* Use g_strfreev() to free it.
* Since: 2.6
**/
gchar **
g_key_file_get_groups (GKeyFile *key_file,
gsize *length)
{
GList *group_node;
gchar **groups;
gsize i, num_groups;
g_return_val_if_fail (key_file != NULL, NULL);
num_groups = g_list_length (key_file->groups);
g_return_val_if_fail (num_groups > 0, NULL);
group_node = g_list_last (key_file->groups);
g_return_val_if_fail (((GKeyFileGroup *) group_node->data)->name == NULL, NULL);
/* Only need num_groups instead of num_groups + 1
* because the first group of the file (last in the
* list) is always the comment group at the top,
* which we skip
*/
groups = g_new (gchar *, num_groups);
i = 0;
for (group_node = group_node->prev;
group_node != NULL;
group_node = group_node->prev)
{
GKeyFileGroup *group;
group = (GKeyFileGroup *) group_node->data;
g_warn_if_fail (group->name != NULL);
groups[i++] = g_strdup (group->name);
}
groups[i] = NULL;
if (length)
*length = i;
return groups;
}
static void
set_not_found_key_error (const char *group_name,
const char *key,
GError **error)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_KEY_NOT_FOUND,
_("Key file does not have key “%s” in group “%s”"),
key, group_name);
}
/**
* g_key_file_get_value:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @error: return location for a #GError, or %NULL
*
* Returns the raw value associated with @key under @group_name.
* Use g_key_file_get_string() to retrieve an unescaped UTF-8 string.
*
* In the event the key cannot be found, %NULL is returned and
* @error is set to %G_KEY_FILE_ERROR_KEY_NOT_FOUND. In the
* event that the @group_name cannot be found, %NULL is returned
* and @error is set to %G_KEY_FILE_ERROR_GROUP_NOT_FOUND.
*
*
* Returns: a newly allocated string or %NULL if the specified
* key cannot be found.
*
* Since: 2.6
**/
gchar *
g_key_file_get_value (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GKeyFileGroup *group;
GKeyFileKeyValuePair *pair;
gchar *value = NULL;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name);
return NULL;
}
pair = g_key_file_lookup_key_value_pair (key_file, group, key);
if (pair)
value = g_strdup (pair->value);
else
set_not_found_key_error (group_name, key, error);
return value;
}
/**
* g_key_file_set_value:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @value: a string
*
* Associates a new value with @key under @group_name.
*
* If @key cannot be found then it is created. If @group_name cannot
* be found then it is created. To set an UTF-8 string which may contain
* characters that need escaping (such as newlines or spaces), use
* g_key_file_set_string().
*
* Since: 2.6
**/
void
g_key_file_set_value (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *value)
{
GKeyFileGroup *group;
GKeyFileKeyValuePair *pair;
g_return_if_fail (key_file != NULL);
g_return_if_fail (group_name != NULL && g_key_file_is_group_name (group_name));
g_return_if_fail (key != NULL && g_key_file_is_key_name (key, strlen (key)));
g_return_if_fail (value != NULL);
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_key_file_add_group (key_file, group_name, TRUE);
group = (GKeyFileGroup *) key_file->groups->data;
g_key_file_add_key (key_file, group, key, value);
}
else
{
pair = g_key_file_lookup_key_value_pair (key_file, group, key);
if (!pair)
g_key_file_add_key (key_file, group, key, value);
else
{
g_free (pair->value);
pair->value = g_strdup (value);
}
}
}
/**
* g_key_file_get_string:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @error: return location for a #GError, or %NULL
*
* Returns the string value associated with @key under @group_name.
* Unlike g_key_file_get_value(), this function handles escape sequences
* like \s.
*
* In the event the key cannot be found, %NULL is returned and
* @error is set to %G_KEY_FILE_ERROR_KEY_NOT_FOUND. In the
* event that the @group_name cannot be found, %NULL is returned
* and @error is set to %G_KEY_FILE_ERROR_GROUP_NOT_FOUND.
*
* Returns: a newly allocated string or %NULL if the specified
* key cannot be found.
*
* Since: 2.6
**/
gchar *
g_key_file_get_string (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
gchar *value, *string_value;
GError *key_file_error;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
key_file_error = NULL;
value = g_key_file_get_value (key_file, group_name, key, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return NULL;
}
if (!g_utf8_validate (value, -1, NULL))
{
gchar *value_utf8 = g_utf8_make_valid (value, -1);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_UNKNOWN_ENCODING,
_("Key file contains key “%s” with value “%s” "
"which is not UTF-8"), key, value_utf8);
g_free (value_utf8);
g_free (value);
return NULL;
}
string_value = g_key_file_parse_value_as_string (key_file, value, NULL,
&key_file_error);
g_free (value);
if (key_file_error)
{
if (g_error_matches (key_file_error,
G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains key “%s” "
"which has a value that cannot be interpreted."),
key);
g_error_free (key_file_error);
}
else
g_propagate_error (error, key_file_error);
}
return string_value;
}
/**
* g_key_file_set_string:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @string: a string
*
* Associates a new string value with @key under @group_name.
* If @key cannot be found then it is created.
* If @group_name cannot be found then it is created.
* Unlike g_key_file_set_value(), this function handles characters
* that need escaping, such as newlines.
*
* Since: 2.6
**/
void
g_key_file_set_string (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *string)
{
gchar *value;
g_return_if_fail (key_file != NULL);
g_return_if_fail (string != NULL);
value = g_key_file_parse_string_as_value (key_file, string, FALSE);
g_key_file_set_value (key_file, group_name, key, value);
g_free (value);
}
/**
* g_key_file_get_string_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @length: (out) (optional): return location for the number of returned strings, or %NULL
* @error: return location for a #GError, or %NULL
*
* Returns the values associated with @key under @group_name.
*
* In the event the key cannot be found, %NULL is returned and
* @error is set to %G_KEY_FILE_ERROR_KEY_NOT_FOUND. In the
* event that the @group_name cannot be found, %NULL is returned
* and @error is set to %G_KEY_FILE_ERROR_GROUP_NOT_FOUND.
*
* Returns: (array zero-terminated=1 length=length) (element-type utf8) (transfer full):
* a %NULL-terminated string array or %NULL if the specified
* key cannot be found. The array should be freed with g_strfreev().
*
* Since: 2.6
**/
gchar **
g_key_file_get_string_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gsize *length,
GError **error)
{
GError *key_file_error = NULL;
gchar *value, *string_value, **values;
gint i, len;
GSList *p, *pieces = NULL;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
if (length)
*length = 0;
value = g_key_file_get_value (key_file, group_name, key, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return NULL;
}
if (!g_utf8_validate (value, -1, NULL))
{
gchar *value_utf8 = g_utf8_make_valid (value, -1);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_UNKNOWN_ENCODING,
_("Key file contains key “%s” with value “%s” "
"which is not UTF-8"), key, value_utf8);
g_free (value_utf8);
g_free (value);
return NULL;
}
string_value = g_key_file_parse_value_as_string (key_file, value, &pieces, &key_file_error);
g_free (value);
g_free (string_value);
if (key_file_error)
{
if (g_error_matches (key_file_error,
G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains key “%s” "
"which has a value that cannot be interpreted."),
key);
g_error_free (key_file_error);
}
else
g_propagate_error (error, key_file_error);
g_slist_free_full (pieces, g_free);
return NULL;
}
len = g_slist_length (pieces);
values = g_new (gchar *, len + 1);
for (p = pieces, i = 0; p; p = p->next)
values[i++] = p->data;
values[len] = NULL;
g_slist_free (pieces);
if (length)
*length = len;
return values;
}
/**
* g_key_file_set_string_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @list: (array zero-terminated=1 length=length) (element-type utf8): an array of string values
* @length: number of string values in @list
*
* Associates a list of string values for @key under @group_name.
* If @key cannot be found then it is created.
* If @group_name cannot be found then it is created.
*
* Since: 2.6
**/
void
g_key_file_set_string_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar * const list[],
gsize length)
{
GString *value_list;
gsize i;
g_return_if_fail (key_file != NULL);
g_return_if_fail (list != NULL || length == 0);
value_list = g_string_sized_new (length * 128);
for (i = 0; i < length && list[i] != NULL; i++)
{
gchar *value;
value = g_key_file_parse_string_as_value (key_file, list[i], TRUE);
g_string_append (value_list, value);
g_string_append_c (value_list, key_file->list_separator);
g_free (value);
}
g_key_file_set_value (key_file, group_name, key, value_list->str);
g_string_free (value_list, TRUE);
}
/**
* g_key_file_set_locale_string:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @locale: a locale identifier
* @string: a string
*
* Associates a string value for @key and @locale under @group_name.
* If the translation for @key cannot be found then it is created.
*
* Since: 2.6
**/
void
g_key_file_set_locale_string (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *locale,
const gchar *string)
{
gchar *full_key, *value;
g_return_if_fail (key_file != NULL);
g_return_if_fail (key != NULL);
g_return_if_fail (locale != NULL);
g_return_if_fail (string != NULL);
value = g_key_file_parse_string_as_value (key_file, string, FALSE);
full_key = g_strdup_printf ("%s[%s]", key, locale);
g_key_file_set_value (key_file, group_name, full_key, value);
g_free (full_key);
g_free (value);
}
/**
* g_key_file_get_locale_string:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @locale: (nullable): a locale identifier or %NULL
* @error: return location for a #GError, or %NULL
*
* Returns the value associated with @key under @group_name
* translated in the given @locale if available. If @locale is
* %NULL then the current locale is assumed.
*
* If @locale is to be non-%NULL, or if the current locale will change over
* the lifetime of the #GKeyFile, it must be loaded with
* %G_KEY_FILE_KEEP_TRANSLATIONS in order to load strings for all locales.
*
* If @key cannot be found then %NULL is returned and @error is set
* to %G_KEY_FILE_ERROR_KEY_NOT_FOUND. If the value associated
* with @key cannot be interpreted or no suitable translation can
* be found then the untranslated value is returned.
*
* Returns: a newly allocated string or %NULL if the specified
* key cannot be found.
*
* Since: 2.6
**/
gchar *
g_key_file_get_locale_string (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *locale,
GError **error)
{
gchar *candidate_key, *translated_value;
GError *key_file_error;
gchar **languages;
gboolean free_languages = FALSE;
gint i;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
candidate_key = NULL;
translated_value = NULL;
key_file_error = NULL;
if (locale)
{
languages = g_get_locale_variants (locale);
free_languages = TRUE;
}
else
{
languages = (gchar **) g_get_language_names ();
free_languages = FALSE;
}
for (i = 0; languages[i]; i++)
{
candidate_key = g_strdup_printf ("%s[%s]", key, languages[i]);
translated_value = g_key_file_get_string (key_file,
group_name,
candidate_key, NULL);
g_free (candidate_key);
if (translated_value)
break;
}
/* Fallback to untranslated key
*/
if (!translated_value)
{
translated_value = g_key_file_get_string (key_file, group_name, key,
&key_file_error);
if (!translated_value)
g_propagate_error (error, key_file_error);
}
if (free_languages)
g_strfreev (languages);
return translated_value;
}
/**
* g_key_file_get_locale_for_key:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @locale: (nullable): a locale identifier or %NULL
*
* Returns the actual locale which the result of
* g_key_file_get_locale_string() or g_key_file_get_locale_string_list()
* came from.
*
* If calling g_key_file_get_locale_string() or
* g_key_file_get_locale_string_list() with exactly the same @key_file,
* @group_name, @key and @locale, the result of those functions will
* have originally been tagged with the locale that is the result of
* this function.
*
* Returns: (nullable): the locale from the file, or %NULL if the key was not
* found or the entry in the file was was untranslated
*
* Since: 2.56
*/
gchar *
g_key_file_get_locale_for_key (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *locale)
{
gchar **languages_allocated = NULL;
const gchar * const *languages;
gchar *result = NULL;
gsize i;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
if (locale != NULL)
{
languages_allocated = g_get_locale_variants (locale);
languages = (const gchar * const *) languages_allocated;
}
else
languages = g_get_language_names ();
for (i = 0; languages[i] != NULL; i++)
{
gchar *candidate_key, *translated_value;
candidate_key = g_strdup_printf ("%s[%s]", key, languages[i]);
translated_value = g_key_file_get_string (key_file, group_name, candidate_key, NULL);
g_free (translated_value);
g_free (candidate_key);
if (translated_value != NULL)
break;
}
result = g_strdup (languages[i]);
g_strfreev (languages_allocated);
return result;
}
/**
* g_key_file_get_locale_string_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @locale: (nullable): a locale identifier or %NULL
* @length: (out) (optional): return location for the number of returned strings or %NULL
* @error: return location for a #GError or %NULL
*
* Returns the values associated with @key under @group_name
* translated in the given @locale if available. If @locale is
* %NULL then the current locale is assumed.
*
* If @locale is to be non-%NULL, or if the current locale will change over
* the lifetime of the #GKeyFile, it must be loaded with
* %G_KEY_FILE_KEEP_TRANSLATIONS in order to load strings for all locales.
*
* If @key cannot be found then %NULL is returned and @error is set
* to %G_KEY_FILE_ERROR_KEY_NOT_FOUND. If the values associated
* with @key cannot be interpreted or no suitable translations
* can be found then the untranslated values are returned. The
* returned array is %NULL-terminated, so @length may optionally
* be %NULL.
*
* Returns: (array zero-terminated=1 length=length) (element-type utf8) (transfer full): a newly allocated %NULL-terminated string array
* or %NULL if the key isn't found. The string array should be freed
* with g_strfreev().
*
* Since: 2.6
**/
gchar **
g_key_file_get_locale_string_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *locale,
gsize *length,
GError **error)
{
GError *key_file_error;
gchar **values, *value;
char list_separator[2];
gsize len;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
key_file_error = NULL;
value = g_key_file_get_locale_string (key_file, group_name,
key, locale,
&key_file_error);
if (key_file_error)
g_propagate_error (error, key_file_error);
if (!value)
{
if (length)
*length = 0;
return NULL;
}
len = strlen (value);
if (value[len - 1] == key_file->list_separator)
value[len - 1] = '\0';
list_separator[0] = key_file->list_separator;
list_separator[1] = '\0';
values = g_strsplit (value, list_separator, 0);
g_free (value);
if (length)
*length = g_strv_length (values);
return values;
}
/**
* g_key_file_set_locale_string_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @locale: a locale identifier
* @list: (array zero-terminated=1 length=length): a %NULL-terminated array of locale string values
* @length: the length of @list
*
* Associates a list of string values for @key and @locale under
* @group_name. If the translation for @key cannot be found then
* it is created.
*
* Since: 2.6
**/
void
g_key_file_set_locale_string_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *locale,
const gchar * const list[],
gsize length)
{
GString *value_list;
gchar *full_key;
gsize i;
g_return_if_fail (key_file != NULL);
g_return_if_fail (key != NULL);
g_return_if_fail (locale != NULL);
g_return_if_fail (length != 0);
value_list = g_string_sized_new (length * 128);
for (i = 0; i < length && list[i] != NULL; i++)
{
gchar *value;
value = g_key_file_parse_string_as_value (key_file, list[i], TRUE);
g_string_append (value_list, value);
g_string_append_c (value_list, key_file->list_separator);
g_free (value);
}
full_key = g_strdup_printf ("%s[%s]", key, locale);
g_key_file_set_value (key_file, group_name, full_key, value_list->str);
g_free (full_key);
g_string_free (value_list, TRUE);
}
/**
* g_key_file_get_boolean:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @error: return location for a #GError
*
* Returns the value associated with @key under @group_name as a
* boolean.
*
* If @key cannot be found then %FALSE is returned and @error is set
* to %G_KEY_FILE_ERROR_KEY_NOT_FOUND. Likewise, if the value
* associated with @key cannot be interpreted as a boolean then %FALSE
* is returned and @error is set to %G_KEY_FILE_ERROR_INVALID_VALUE.
*
* Returns: the value associated with the key as a boolean,
* or %FALSE if the key was not found or could not be parsed.
*
* Since: 2.6
**/
gboolean
g_key_file_get_boolean (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GError *key_file_error = NULL;
gchar *value;
gboolean bool_value;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (group_name != NULL, FALSE);
g_return_val_if_fail (key != NULL, FALSE);
value = g_key_file_get_value (key_file, group_name, key, &key_file_error);
if (!value)
{
g_propagate_error (error, key_file_error);
return FALSE;
}
bool_value = g_key_file_parse_value_as_boolean (key_file, value,
&key_file_error);
g_free (value);
if (key_file_error)
{
if (g_error_matches (key_file_error,
G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains key “%s” "
"which has a value that cannot be interpreted."),
key);
g_error_free (key_file_error);
}
else
g_propagate_error (error, key_file_error);
}
return bool_value;
}
/**
* g_key_file_set_boolean:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @value: %TRUE or %FALSE
*
* Associates a new boolean value with @key under @group_name.
* If @key cannot be found then it is created.
*
* Since: 2.6
**/
void
g_key_file_set_boolean (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gboolean value)
{
const gchar *result;
g_return_if_fail (key_file != NULL);
result = g_key_file_parse_boolean_as_value (key_file, value);
g_key_file_set_value (key_file, group_name, key, result);
}
/**
* g_key_file_get_boolean_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @length: (out): the number of booleans returned
* @error: return location for a #GError
*
* Returns the values associated with @key under @group_name as
* booleans.
*
* If @key cannot be found then %NULL is returned and @error is set to
* %G_KEY_FILE_ERROR_KEY_NOT_FOUND. Likewise, if the values associated
* with @key cannot be interpreted as booleans then %NULL is returned
* and @error is set to %G_KEY_FILE_ERROR_INVALID_VALUE.
*
* Returns: (array length=length) (element-type gboolean) (transfer container):
* the values associated with the key as a list of booleans, or %NULL if the
* key was not found or could not be parsed. The returned list of booleans
* should be freed with g_free() when no longer needed.
*
* Since: 2.6
**/
gboolean *
g_key_file_get_boolean_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gsize *length,
GError **error)
{
GError *key_file_error;
gchar **values;
gboolean *bool_values;
gsize i, num_bools;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
if (length)
*length = 0;
key_file_error = NULL;
values = g_key_file_get_string_list (key_file, group_name, key,
&num_bools, &key_file_error);
if (key_file_error)
g_propagate_error (error, key_file_error);
if (!values)
return NULL;
bool_values = g_new (gboolean, num_bools);
for (i = 0; i < num_bools; i++)
{
bool_values[i] = g_key_file_parse_value_as_boolean (key_file,
values[i],
&key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
g_strfreev (values);
g_free (bool_values);
return NULL;
}
}
g_strfreev (values);
if (length)
*length = num_bools;
return bool_values;
}
/**
* g_key_file_set_boolean_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @list: (array length=length): an array of boolean values
* @length: length of @list
*
* Associates a list of boolean values with @key under @group_name.
* If @key cannot be found then it is created.
* If @group_name is %NULL, the start_group is used.
*
* Since: 2.6
**/
void
g_key_file_set_boolean_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gboolean list[],
gsize length)
{
GString *value_list;
gsize i;
g_return_if_fail (key_file != NULL);
g_return_if_fail (list != NULL);
value_list = g_string_sized_new (length * 8);
for (i = 0; i < length; i++)
{
const gchar *value;
value = g_key_file_parse_boolean_as_value (key_file, list[i]);
g_string_append (value_list, value);
g_string_append_c (value_list, key_file->list_separator);
}
g_key_file_set_value (key_file, group_name, key, value_list->str);
g_string_free (value_list, TRUE);
}
/**
* g_key_file_get_integer:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @error: return location for a #GError
*
* Returns the value associated with @key under @group_name as an
* integer.
*
* If @key cannot be found then 0 is returned and @error is set to
* %G_KEY_FILE_ERROR_KEY_NOT_FOUND. Likewise, if the value associated
* with @key cannot be interpreted as an integer, or is out of range
* for a #gint, then 0 is returned
* and @error is set to %G_KEY_FILE_ERROR_INVALID_VALUE.
*
* Returns: the value associated with the key as an integer, or
* 0 if the key was not found or could not be parsed.
*
* Since: 2.6
**/
gint
g_key_file_get_integer (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GError *key_file_error;
gchar *value;
gint int_value;
g_return_val_if_fail (key_file != NULL, -1);
g_return_val_if_fail (group_name != NULL, -1);
g_return_val_if_fail (key != NULL, -1);
key_file_error = NULL;
value = g_key_file_get_value (key_file, group_name, key, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return 0;
}
int_value = g_key_file_parse_value_as_integer (key_file, value,
&key_file_error);
g_free (value);
if (key_file_error)
{
if (g_error_matches (key_file_error,
G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains key “%s” in group “%s” "
"which has a value that cannot be interpreted."),
key, group_name);
g_error_free (key_file_error);
}
else
g_propagate_error (error, key_file_error);
}
return int_value;
}
/**
* g_key_file_set_integer:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @value: an integer value
*
* Associates a new integer value with @key under @group_name.
* If @key cannot be found then it is created.
*
* Since: 2.6
**/
void
g_key_file_set_integer (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gint value)
{
gchar *result;
g_return_if_fail (key_file != NULL);
result = g_key_file_parse_integer_as_value (key_file, value);
g_key_file_set_value (key_file, group_name, key, result);
g_free (result);
}
/**
* g_key_file_get_int64:
* @key_file: a non-%NULL #GKeyFile
* @group_name: a non-%NULL group name
* @key: a non-%NULL key
* @error: return location for a #GError
*
* Returns the value associated with @key under @group_name as a signed
* 64-bit integer. This is similar to g_key_file_get_integer() but can return
* 64-bit results without truncation.
*
* Returns: the value associated with the key as a signed 64-bit integer, or
* 0 if the key was not found or could not be parsed.
*
* Since: 2.26
*/
gint64
g_key_file_get_int64 (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
gchar *s, *end;
gint64 v;
g_return_val_if_fail (key_file != NULL, -1);
g_return_val_if_fail (group_name != NULL, -1);
g_return_val_if_fail (key != NULL, -1);
s = g_key_file_get_value (key_file, group_name, key, error);
if (s == NULL)
return 0;
v = g_ascii_strtoll (s, &end, 10);
if (*s == '\0' || *end != '\0')
{
g_set_error (error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key “%s” in group “%s” has value “%s” "
"where %s was expected"),
key, group_name, s, "int64");
g_free (s);
return 0;
}
g_free (s);
return v;
}
/**
* g_key_file_set_int64:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @value: an integer value
*
* Associates a new integer value with @key under @group_name.
* If @key cannot be found then it is created.
*
* Since: 2.26
**/
void
g_key_file_set_int64 (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gint64 value)
{
gchar *result;
g_return_if_fail (key_file != NULL);
result = g_strdup_printf ("%" G_GINT64_FORMAT, value);
g_key_file_set_value (key_file, group_name, key, result);
g_free (result);
}
/**
* g_key_file_get_uint64:
* @key_file: a non-%NULL #GKeyFile
* @group_name: a non-%NULL group name
* @key: a non-%NULL key
* @error: return location for a #GError
*
* Returns the value associated with @key under @group_name as an unsigned
* 64-bit integer. This is similar to g_key_file_get_integer() but can return
* large positive results without truncation.
*
* Returns: the value associated with the key as an unsigned 64-bit integer,
* or 0 if the key was not found or could not be parsed.
*
* Since: 2.26
*/
guint64
g_key_file_get_uint64 (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
gchar *s, *end;
guint64 v;
g_return_val_if_fail (key_file != NULL, -1);
g_return_val_if_fail (group_name != NULL, -1);
g_return_val_if_fail (key != NULL, -1);
s = g_key_file_get_value (key_file, group_name, key, error);
if (s == NULL)
return 0;
v = g_ascii_strtoull (s, &end, 10);
if (*s == '\0' || *end != '\0')
{
g_set_error (error, G_KEY_FILE_ERROR, G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key “%s” in group “%s” has value “%s” "
"where %s was expected"),
key, group_name, s, "uint64");
g_free (s);
return 0;
}
g_free (s);
return v;
}
/**
* g_key_file_set_uint64:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @value: an integer value
*
* Associates a new integer value with @key under @group_name.
* If @key cannot be found then it is created.
*
* Since: 2.26
**/
void
g_key_file_set_uint64 (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
guint64 value)
{
gchar *result;
g_return_if_fail (key_file != NULL);
result = g_strdup_printf ("%" G_GUINT64_FORMAT, value);
g_key_file_set_value (key_file, group_name, key, result);
g_free (result);
}
/**
* g_key_file_get_integer_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @length: (out): the number of integers returned
* @error: return location for a #GError
*
* Returns the values associated with @key under @group_name as
* integers.
*
* If @key cannot be found then %NULL is returned and @error is set to
* %G_KEY_FILE_ERROR_KEY_NOT_FOUND. Likewise, if the values associated
* with @key cannot be interpreted as integers, or are out of range for
* #gint, then %NULL is returned
* and @error is set to %G_KEY_FILE_ERROR_INVALID_VALUE.
*
* Returns: (array length=length) (element-type gint) (transfer container):
* the values associated with the key as a list of integers, or %NULL if
* the key was not found or could not be parsed. The returned list of
* integers should be freed with g_free() when no longer needed.
*
* Since: 2.6
**/
gint *
g_key_file_get_integer_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gsize *length,
GError **error)
{
GError *key_file_error = NULL;
gchar **values;
gint *int_values;
gsize i, num_ints;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
if (length)
*length = 0;
values = g_key_file_get_string_list (key_file, group_name, key,
&num_ints, &key_file_error);
if (key_file_error)
g_propagate_error (error, key_file_error);
if (!values)
return NULL;
int_values = g_new (gint, num_ints);
for (i = 0; i < num_ints; i++)
{
int_values[i] = g_key_file_parse_value_as_integer (key_file,
values[i],
&key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
g_strfreev (values);
g_free (int_values);
return NULL;
}
}
g_strfreev (values);
if (length)
*length = num_ints;
return int_values;
}
/**
* g_key_file_set_integer_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @list: (array length=length): an array of integer values
* @length: number of integer values in @list
*
* Associates a list of integer values with @key under @group_name.
* If @key cannot be found then it is created.
*
* Since: 2.6
**/
void
g_key_file_set_integer_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gint list[],
gsize length)
{
GString *values;
gsize i;
g_return_if_fail (key_file != NULL);
g_return_if_fail (list != NULL);
values = g_string_sized_new (length * 16);
for (i = 0; i < length; i++)
{
gchar *value;
value = g_key_file_parse_integer_as_value (key_file, list[i]);
g_string_append (values, value);
g_string_append_c (values, key_file->list_separator);
g_free (value);
}
g_key_file_set_value (key_file, group_name, key, values->str);
g_string_free (values, TRUE);
}
/**
* g_key_file_get_double:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @error: return location for a #GError
*
* Returns the value associated with @key under @group_name as a
* double. If @group_name is %NULL, the start_group is used.
*
* If @key cannot be found then 0.0 is returned and @error is set to
* %G_KEY_FILE_ERROR_KEY_NOT_FOUND. Likewise, if the value associated
* with @key cannot be interpreted as a double then 0.0 is returned
* and @error is set to %G_KEY_FILE_ERROR_INVALID_VALUE.
*
* Returns: the value associated with the key as a double, or
* 0.0 if the key was not found or could not be parsed.
*
* Since: 2.12
**/
gdouble
g_key_file_get_double (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GError *key_file_error;
gchar *value;
gdouble double_value;
g_return_val_if_fail (key_file != NULL, -1);
g_return_val_if_fail (group_name != NULL, -1);
g_return_val_if_fail (key != NULL, -1);
key_file_error = NULL;
value = g_key_file_get_value (key_file, group_name, key, &key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
return 0;
}
double_value = g_key_file_parse_value_as_double (key_file, value,
&key_file_error);
g_free (value);
if (key_file_error)
{
if (g_error_matches (key_file_error,
G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains key “%s” in group “%s” "
"which has a value that cannot be interpreted."),
key, group_name);
g_error_free (key_file_error);
}
else
g_propagate_error (error, key_file_error);
}
return double_value;
}
/**
* g_key_file_set_double:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @value: a double value
*
* Associates a new double value with @key under @group_name.
* If @key cannot be found then it is created.
*
* Since: 2.12
**/
void
g_key_file_set_double (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gdouble value)
{
gchar result[G_ASCII_DTOSTR_BUF_SIZE];
g_return_if_fail (key_file != NULL);
g_ascii_dtostr (result, sizeof (result), value);
g_key_file_set_value (key_file, group_name, key, result);
}
/**
* g_key_file_get_double_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @length: (out): the number of doubles returned
* @error: return location for a #GError
*
* Returns the values associated with @key under @group_name as
* doubles.
*
* If @key cannot be found then %NULL is returned and @error is set to
* %G_KEY_FILE_ERROR_KEY_NOT_FOUND. Likewise, if the values associated
* with @key cannot be interpreted as doubles then %NULL is returned
* and @error is set to %G_KEY_FILE_ERROR_INVALID_VALUE.
*
* Returns: (array length=length) (element-type gdouble) (transfer container):
* the values associated with the key as a list of doubles, or %NULL if the
* key was not found or could not be parsed. The returned list of doubles
* should be freed with g_free() when no longer needed.
*
* Since: 2.12
**/
gdouble *
g_key_file_get_double_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gsize *length,
GError **error)
{
GError *key_file_error = NULL;
gchar **values;
gdouble *double_values;
gsize i, num_doubles;
g_return_val_if_fail (key_file != NULL, NULL);
g_return_val_if_fail (group_name != NULL, NULL);
g_return_val_if_fail (key != NULL, NULL);
if (length)
*length = 0;
values = g_key_file_get_string_list (key_file, group_name, key,
&num_doubles, &key_file_error);
if (key_file_error)
g_propagate_error (error, key_file_error);
if (!values)
return NULL;
double_values = g_new (gdouble, num_doubles);
for (i = 0; i < num_doubles; i++)
{
double_values[i] = g_key_file_parse_value_as_double (key_file,
values[i],
&key_file_error);
if (key_file_error)
{
g_propagate_error (error, key_file_error);
g_strfreev (values);
g_free (double_values);
return NULL;
}
}
g_strfreev (values);
if (length)
*length = num_doubles;
return double_values;
}
/**
* g_key_file_set_double_list:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key
* @list: (array length=length): an array of double values
* @length: number of double values in @list
*
* Associates a list of double values with @key under
* @group_name. If @key cannot be found then it is created.
*
* Since: 2.12
**/
void
g_key_file_set_double_list (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gdouble list[],
gsize length)
{
GString *values;
gsize i;
g_return_if_fail (key_file != NULL);
g_return_if_fail (list != NULL);
values = g_string_sized_new (length * 16);
for (i = 0; i < length; i++)
{
gchar result[G_ASCII_DTOSTR_BUF_SIZE];
g_ascii_dtostr( result, sizeof (result), list[i] );
g_string_append (values, result);
g_string_append_c (values, key_file->list_separator);
}
g_key_file_set_value (key_file, group_name, key, values->str);
g_string_free (values, TRUE);
}
static gboolean
g_key_file_set_key_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *comment,
GError **error)
{
GKeyFileGroup *group;
GKeyFileKeyValuePair *pair;
GList *key_node, *comment_node, *tmp;
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name ? group_name : "(null)");
return FALSE;
}
/* First find the key the comments are supposed to be
* associated with
*/
key_node = g_key_file_lookup_key_value_pair_node (key_file, group, key);
if (key_node == NULL)
{
set_not_found_key_error (group->name, key, error);
return FALSE;
}
/* Then find all the comments already associated with the
* key and free them
*/
tmp = key_node->next;
while (tmp != NULL)
{
pair = (GKeyFileKeyValuePair *) tmp->data;
if (pair->key != NULL)
break;
comment_node = tmp;
tmp = tmp->next;
g_key_file_remove_key_value_pair_node (key_file, group,
comment_node);
}
if (comment == NULL)
return TRUE;
/* Now we can add our new comment
*/
pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = NULL;
pair->value = g_key_file_parse_comment_as_value (key_file, comment);
key_node = g_list_insert (key_node, pair, 1);
(void) key_node;
return TRUE;
}
static gboolean
g_key_file_set_top_comment (GKeyFile *key_file,
const gchar *comment,
GError **error)
{
GList *group_node;
GKeyFileGroup *group;
GKeyFileKeyValuePair *pair;
/* The last group in the list should be the top (comments only)
* group in the file
*/
g_warn_if_fail (key_file->groups != NULL);
group_node = g_list_last (key_file->groups);
group = (GKeyFileGroup *) group_node->data;
g_warn_if_fail (group->name == NULL);
/* Note all keys must be comments at the top of
* the file, so we can just free it all.
*/
g_list_free_full (group->key_value_pairs, (GDestroyNotify) g_key_file_key_value_pair_free);
group->key_value_pairs = NULL;
if (comment == NULL)
return TRUE;
pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = NULL;
pair->value = g_key_file_parse_comment_as_value (key_file, comment);
group->key_value_pairs =
g_list_prepend (group->key_value_pairs, pair);
return TRUE;
}
static gboolean
g_key_file_set_group_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *comment,
GError **error)
{
GKeyFileGroup *group;
GList *group_node;
GKeyFileKeyValuePair *pair;
g_return_val_if_fail (group_name != NULL && g_key_file_is_group_name (group_name), FALSE);
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name);
return FALSE;
}
if (group == key_file->start_group)
return g_key_file_set_top_comment (key_file, comment, error);
/* First remove any existing comment
*/
group_node = g_key_file_lookup_group_node (key_file, group_name);
group = group_node->next->data;
for (GList *lp = group->key_value_pairs; lp != NULL; )
{
GList *lnext = lp->next;
pair = lp->data;
if (pair->key != NULL)
break;
g_key_file_remove_key_value_pair_node (key_file, group, lp);
lp = lnext;
}
if (comment == NULL)
return TRUE;
/* Now we can add our new comment
*/
pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = NULL;
pair->value = g_key_file_parse_comment_as_value (key_file, comment);
group->key_value_pairs = g_list_prepend (group->key_value_pairs, pair);
return TRUE;
}
/**
* g_key_file_set_comment:
* @key_file: a #GKeyFile
* @group_name: (nullable): a group name, or %NULL
* @key: (nullable): a key
* @comment: a comment
* @error: return location for a #GError
*
* Places a comment above @key from @group_name.
*
* If @key is %NULL then @comment will be written above @group_name.
* If both @key and @group_name are %NULL, then @comment will be
* written above the first group in the file.
*
* Note that this function prepends a '#' comment marker to
* each line of @comment.
*
* Returns: %TRUE if the comment was written, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_set_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
const gchar *comment,
GError **error)
{
g_return_val_if_fail (key_file != NULL, FALSE);
if (group_name != NULL && key != NULL)
{
if (!g_key_file_set_key_comment (key_file, group_name, key, comment, error))
return FALSE;
}
else if (group_name != NULL)
{
if (!g_key_file_set_group_comment (key_file, group_name, comment, error))
return FALSE;
}
else
{
if (!g_key_file_set_top_comment (key_file, comment, error))
return FALSE;
}
return TRUE;
}
static gchar *
g_key_file_get_key_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GKeyFileGroup *group;
GKeyFileKeyValuePair *pair;
GList *key_node, *tmp;
GString *string;
gchar *comment;
g_return_val_if_fail (group_name != NULL && g_key_file_is_group_name (group_name), NULL);
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name ? group_name : "(null)");
return NULL;
}
/* First find the key the comments are supposed to be
* associated with
*/
key_node = g_key_file_lookup_key_value_pair_node (key_file, group, key);
if (key_node == NULL)
{
set_not_found_key_error (group->name, key, error);
return NULL;
}
string = NULL;
/* Then find all the comments already associated with the
* key and concatenate them.
*/
tmp = key_node->next;
if (!key_node->next)
return NULL;
pair = (GKeyFileKeyValuePair *) tmp->data;
if (pair->key != NULL)
return NULL;
while (tmp->next)
{
pair = (GKeyFileKeyValuePair *) tmp->next->data;
if (pair->key != NULL)
break;
tmp = tmp->next;
}
while (tmp != key_node)
{
pair = (GKeyFileKeyValuePair *) tmp->data;
if (string == NULL)
string = g_string_sized_new (512);
comment = g_key_file_parse_value_as_comment (key_file, pair->value,
(tmp->prev == key_node));
g_string_append (string, comment);
g_free (comment);
tmp = tmp->prev;
}
if (string != NULL)
comment = g_string_free_and_steal (g_steal_pointer (&string));
else
comment = NULL;
return comment;
}
static gchar *
get_group_comment (GKeyFile *key_file,
GKeyFileGroup *group,
GError **error)
{
GString *string;
GList *tmp;
gchar *comment;
string = NULL;
tmp = group->key_value_pairs;
while (tmp)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) tmp->data;
if (pair->key != NULL)
{
tmp = tmp->prev;
break;
}
if (tmp->next == NULL)
break;
tmp = tmp->next;
}
while (tmp != NULL)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) tmp->data;
if (string == NULL)
string = g_string_sized_new (512);
comment = g_key_file_parse_value_as_comment (key_file, pair->value,
(tmp->prev == NULL));
g_string_append (string, comment);
g_free (comment);
tmp = tmp->prev;
}
if (string != NULL)
return g_string_free (string, FALSE);
return NULL;
}
static gchar *
g_key_file_get_group_comment (GKeyFile *key_file,
const gchar *group_name,
GError **error)
{
GList *group_node;
GKeyFileGroup *group;
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name ? group_name : "(null)");
return NULL;
}
group_node = g_key_file_lookup_group_node (key_file, group_name);
group_node = group_node->next;
group = (GKeyFileGroup *)group_node->data;
return get_group_comment (key_file, group, error);
}
static gchar *
g_key_file_get_top_comment (GKeyFile *key_file,
GError **error)
{
GList *group_node;
GKeyFileGroup *group;
/* The last group in the list should be the top (comments only)
* group in the file
*/
g_warn_if_fail (key_file->groups != NULL);
group_node = g_list_last (key_file->groups);
group = (GKeyFileGroup *) group_node->data;
g_warn_if_fail (group->name == NULL);
return get_group_comment (key_file, group, error);
}
/**
* g_key_file_get_comment:
* @key_file: a #GKeyFile
* @group_name: (nullable): a group name, or %NULL
* @key: (nullable): a key
* @error: return location for a #GError
*
* Retrieves a comment above @key from @group_name.
* If @key is %NULL then @comment will be read from above
* @group_name. If both @key and @group_name are %NULL, then
* @comment will be read from above the first group in the file.
*
* Note that the returned string does not include the '#' comment markers,
* but does include any whitespace after them (on each line). It includes
* the line breaks between lines, but does not include the final line break.
*
* Returns: a comment that should be freed with g_free()
*
* Since: 2.6
**/
gchar *
g_key_file_get_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
g_return_val_if_fail (key_file != NULL, NULL);
if (group_name != NULL && key != NULL)
return g_key_file_get_key_comment (key_file, group_name, key, error);
else if (group_name != NULL)
return g_key_file_get_group_comment (key_file, group_name, error);
else
return g_key_file_get_top_comment (key_file, error);
}
/**
* g_key_file_remove_comment:
* @key_file: a #GKeyFile
* @group_name: (nullable): a group name, or %NULL
* @key: (nullable): a key
* @error: return location for a #GError
*
* Removes a comment above @key from @group_name.
* If @key is %NULL then @comment will be removed above @group_name.
* If both @key and @group_name are %NULL, then @comment will
* be removed above the first group in the file.
*
* Returns: %TRUE if the comment was removed, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_remove_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
g_return_val_if_fail (key_file != NULL, FALSE);
if (group_name != NULL && key != NULL)
return g_key_file_set_key_comment (key_file, group_name, key, NULL, error);
else if (group_name != NULL)
return g_key_file_set_group_comment (key_file, group_name, NULL, error);
else
return g_key_file_set_top_comment (key_file, NULL, error);
}
/**
* g_key_file_has_group:
* @key_file: a #GKeyFile
* @group_name: a group name
*
* Looks whether the key file has the group @group_name.
*
* Returns: %TRUE if @group_name is a part of @key_file, %FALSE
* otherwise.
* Since: 2.6
**/
gboolean
g_key_file_has_group (GKeyFile *key_file,
const gchar *group_name)
{
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (group_name != NULL, FALSE);
return g_key_file_lookup_group (key_file, group_name) != NULL;
}
/* This code remains from a historical attempt to add a new public API
* which respects the GError rules.
*/
static gboolean
g_key_file_has_key_full (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
gboolean *has_key,
GError **error)
{
GKeyFileKeyValuePair *pair;
GKeyFileGroup *group;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (group_name != NULL, FALSE);
g_return_val_if_fail (key != NULL, FALSE);
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name);
return FALSE;
}
pair = g_key_file_lookup_key_value_pair (key_file, group, key);
if (has_key)
*has_key = pair != NULL;
return TRUE;
}
/**
* g_key_file_has_key: (skip)
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key name
* @error: return location for a #GError
*
* Looks whether the key file has the key @key in the group
* @group_name.
*
* Note that this function does not follow the rules for #GError strictly;
* the return value both carries meaning and signals an error. To use
* this function, you must pass a #GError pointer in @error, and check
* whether it is not %NULL to see if an error occurred.
*
* Language bindings should use g_key_file_get_value() to test whether
* or not a key exists.
*
* Returns: %TRUE if @key is a part of @group_name, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_has_key (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GError *temp_error = NULL;
gboolean has_key;
if (g_key_file_has_key_full (key_file, group_name, key, &has_key, &temp_error))
{
return has_key;
}
else
{
g_propagate_error (error, temp_error);
return FALSE;
}
}
static void
g_key_file_add_group (GKeyFile *key_file,
const gchar *group_name,
gboolean created)
{
GKeyFileGroup *group;
g_return_if_fail (key_file != NULL);
g_return_if_fail (group_name != NULL && g_key_file_is_group_name (group_name));
group = g_key_file_lookup_group (key_file, group_name);
if (group != NULL)
{
key_file->current_group = group;
return;
}
group = g_new0 (GKeyFileGroup, 1);
group->name = g_strdup (group_name);
group->lookup_map = g_hash_table_new (g_str_hash, g_str_equal);
key_file->groups = g_list_prepend (key_file->groups, group);
key_file->current_group = group;
if (key_file->start_group == NULL)
{
key_file->start_group = group;
}
else if (!(key_file->flags & G_KEY_FILE_KEEP_COMMENTS) || created)
{
/* separate groups by a blank line if we don't keep comments or group is created */
GKeyFileGroup *next_group = key_file->groups->next->data;
GKeyFileKeyValuePair *pair;
if (next_group->key_value_pairs != NULL)
pair = next_group->key_value_pairs->data;
if (next_group->key_value_pairs == NULL ||
(pair->key != NULL && !g_strstr_len (pair->value, -1, "\n")))
{
GKeyFileKeyValuePair *pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = NULL;
pair->value = g_strdup ("");
next_group->key_value_pairs = g_list_prepend (next_group->key_value_pairs, pair);
}
}
if (!key_file->group_hash)
key_file->group_hash = g_hash_table_new (g_str_hash, g_str_equal);
g_hash_table_insert (key_file->group_hash, (gpointer)group->name, group);
}
static void
g_key_file_key_value_pair_free (GKeyFileKeyValuePair *pair)
{
if (pair != NULL)
{
g_free (pair->key);
g_free (pair->value);
g_free_sized (pair, sizeof (GKeyFileKeyValuePair));
}
}
/* Be careful not to call this function on a node with data in the
* lookup map without removing it from the lookup map, first.
*
* Some current cases where this warning is not a concern are
* when:
* - the node being removed is a comment node
* - the entire lookup map is getting destroyed soon after
* anyway.
*/
static void
g_key_file_remove_key_value_pair_node (GKeyFile *key_file,
GKeyFileGroup *group,
GList *pair_node)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) pair_node->data;
group->key_value_pairs = g_list_remove_link (group->key_value_pairs, pair_node);
g_warn_if_fail (pair->value != NULL);
g_key_file_key_value_pair_free (pair);
g_list_free_1 (pair_node);
}
static void
g_key_file_remove_group_node (GKeyFile *key_file,
GList *group_node)
{
GKeyFileGroup *group;
GList *tmp;
group = (GKeyFileGroup *) group_node->data;
if (group->name)
{
g_assert (key_file->group_hash);
g_hash_table_remove (key_file->group_hash, group->name);
}
/* If the current group gets deleted make the current group the last
* added group.
*/
if (key_file->current_group == group)
{
/* groups should always contain at least the top comment group,
* unless g_key_file_clear has been called
*/
if (key_file->groups)
key_file->current_group = (GKeyFileGroup *) key_file->groups->data;
else
key_file->current_group = NULL;
}
/* If the start group gets deleted make the start group the first
* added group.
*/
if (key_file->start_group == group)
{
tmp = g_list_last (key_file->groups);
while (tmp != NULL)
{
if (tmp != group_node &&
((GKeyFileGroup *) tmp->data)->name != NULL)
break;
tmp = tmp->prev;
}
if (tmp)
key_file->start_group = (GKeyFileGroup *) tmp->data;
else
key_file->start_group = NULL;
}
key_file->groups = g_list_remove_link (key_file->groups, group_node);
tmp = group->key_value_pairs;
while (tmp != NULL)
{
GList *pair_node;
pair_node = tmp;
tmp = tmp->next;
g_key_file_remove_key_value_pair_node (key_file, group, pair_node);
}
g_warn_if_fail (group->key_value_pairs == NULL);
if (group->lookup_map)
{
g_hash_table_destroy (group->lookup_map);
group->lookup_map = NULL;
}
g_free ((gchar *) group->name);
g_free_sized (group, sizeof (GKeyFileGroup));
g_list_free_1 (group_node);
}
/**
* g_key_file_remove_group:
* @key_file: a #GKeyFile
* @group_name: a group name
* @error: return location for a #GError or %NULL
*
* Removes the specified group, @group_name,
* from the key file.
*
* Returns: %TRUE if the group was removed, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_remove_group (GKeyFile *key_file,
const gchar *group_name,
GError **error)
{
GList *group_node;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (group_name != NULL, FALSE);
group_node = g_key_file_lookup_group_node (key_file, group_name);
if (!group_node)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name);
return FALSE;
}
g_key_file_remove_group_node (key_file, group_node);
return TRUE;
}
static void
g_key_file_add_key_value_pair (GKeyFile *key_file,
GKeyFileGroup *group,
GKeyFileKeyValuePair *pair,
GList *sibling)
{
g_hash_table_replace (group->lookup_map, pair->key, pair);
group->key_value_pairs = g_list_insert_before (group->key_value_pairs, sibling, pair);
}
static void
g_key_file_add_key (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key,
const gchar *value)
{
GKeyFileKeyValuePair *pair;
GList *lp;
pair = g_new (GKeyFileKeyValuePair, 1);
pair->key = g_strdup (key);
pair->value = g_strdup (value);
/* skip group comment */
lp = group->key_value_pairs;
while (lp != NULL && ((GKeyFileKeyValuePair *) lp->data)->key == NULL)
lp = lp->next;
g_key_file_add_key_value_pair (key_file, group, pair, lp);
}
/**
* g_key_file_remove_key:
* @key_file: a #GKeyFile
* @group_name: a group name
* @key: a key name to remove
* @error: return location for a #GError or %NULL
*
* Removes @key in @group_name from the key file.
*
* Returns: %TRUE if the key was removed, %FALSE otherwise
*
* Since: 2.6
**/
gboolean
g_key_file_remove_key (GKeyFile *key_file,
const gchar *group_name,
const gchar *key,
GError **error)
{
GKeyFileGroup *group;
GKeyFileKeyValuePair *pair;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (group_name != NULL, FALSE);
g_return_val_if_fail (key != NULL, FALSE);
pair = NULL;
group = g_key_file_lookup_group (key_file, group_name);
if (!group)
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_GROUP_NOT_FOUND,
_("Key file does not have group “%s”"),
group_name);
return FALSE;
}
pair = g_key_file_lookup_key_value_pair (key_file, group, key);
if (!pair)
{
set_not_found_key_error (group->name, key, error);
return FALSE;
}
group->key_value_pairs = g_list_remove (group->key_value_pairs, pair);
g_hash_table_remove (group->lookup_map, pair->key);
g_key_file_key_value_pair_free (pair);
return TRUE;
}
static GList *
g_key_file_lookup_group_node (GKeyFile *key_file,
const gchar *group_name)
{
GKeyFileGroup *group;
group = g_key_file_lookup_group (key_file, group_name);
if (group == NULL)
return NULL;
return g_list_find (key_file->groups, group);
}
static GKeyFileGroup *
g_key_file_lookup_group (GKeyFile *key_file,
const gchar *group_name)
{
if (!key_file->group_hash)
return NULL;
return (GKeyFileGroup *)g_hash_table_lookup (key_file->group_hash, group_name);
}
static GList *
g_key_file_lookup_key_value_pair_node (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key)
{
GList *key_node;
for (key_node = group->key_value_pairs;
key_node != NULL;
key_node = key_node->next)
{
GKeyFileKeyValuePair *pair;
pair = (GKeyFileKeyValuePair *) key_node->data;
if (pair->key && strcmp (pair->key, key) == 0)
break;
}
return key_node;
}
static GKeyFileKeyValuePair *
g_key_file_lookup_key_value_pair (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key)
{
return (GKeyFileKeyValuePair *) g_hash_table_lookup (group->lookup_map, key);
}
/* Lines starting with # or consisting entirely of whitespace are merely
* recorded, not parsed. This function assumes all leading whitespace
* has been stripped.
*/
static gboolean
g_key_file_line_is_comment (const gchar *line)
{
return (*line == '#' || *line == '\0' || *line == '\n');
}
static gboolean
g_key_file_is_group_name (const gchar *name)
{
const gchar *p, *q;
g_assert (name != NULL);
p = q = name;
while (*q && *q != ']' && *q != '[' && !g_ascii_iscntrl (*q))
q = g_utf8_find_next_char (q, NULL);
if (*q != '\0' || q == p)
return FALSE;
return TRUE;
}
static gboolean
g_key_file_is_key_name (const gchar *name,
gsize len)
{
const gchar *p, *q, *end;
g_assert (name != NULL);
p = q = name;
end = name + len;
/* We accept a little more than the desktop entry spec says,
* since gnome-vfs uses mime-types as keys in its cache.
*/
while (q < end && *q && *q != '=' && *q != '[' && *q != ']')
{
q = g_utf8_find_next_char (q, end);
if (q == NULL)
q = end;
}
/* No empty keys, please */
if (q == p)
return FALSE;
/* We accept spaces in the middle of keys to not break
* existing apps, but we don't tolerate initial or final
* spaces, which would lead to silent corruption when
* rereading the file.
*/
if (*p == ' ' || q[-1] == ' ')
return FALSE;
if (*q == '[')
{
q++;
while (q < end &&
*q != '\0' &&
(g_unichar_isalnum (g_utf8_get_char_validated (q, end - q)) || *q == '-' || *q == '_' || *q == '.' || *q == '@'))
{
q = g_utf8_find_next_char (q, end);
if (q == NULL)
{
q = end;
break;
}
}
if (*q != ']')
return FALSE;
q++;
}
if (q < end)
return FALSE;
return TRUE;
}
/* A group in a key file is made up of a starting '[' followed by one
* or more letters making up the group name followed by ']'.
*/
static gboolean
g_key_file_line_is_group (const gchar *line)
{
const gchar *p;
p = line;
if (*p != '[')
return FALSE;
p++;
while (*p && *p != ']')
p = g_utf8_find_next_char (p, NULL);
if (*p != ']')
return FALSE;
/* silently accept whitespace after the ] */
p = g_utf8_find_next_char (p, NULL);
while (*p == ' ' || *p == '\t')
p = g_utf8_find_next_char (p, NULL);
if (*p)
return FALSE;
return TRUE;
}
static gboolean
g_key_file_line_is_key_value_pair (const gchar *line)
{
const gchar *p;
p = g_utf8_strchr (line, -1, '=');
if (!p)
return FALSE;
/* Key must be non-empty
*/
if (*p == line[0])
return FALSE;
return TRUE;
}
static gchar *
g_key_file_parse_value_as_string (GKeyFile *key_file,
const gchar *value,
GSList **pieces,
GError **error)
{
gchar *string_value, *q0, *q;
GSList *tmp_pieces = NULL;
const gchar *p;
g_assert (pieces == NULL || *pieces == NULL);
string_value = g_new (gchar, strlen (value) + 1);
p = value;
q0 = q = string_value;
while (*p)
{
if (*p == '\\')
{
p++;
switch (*p)
{
case 's':
*q = ' ';
break;
case 'n':
*q = '\n';
break;
case 't':
*q = '\t';
break;
case 'r':
*q = '\r';
break;
case '\\':
*q = '\\';
break;
case '\0':
g_set_error_literal (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains escape character "
"at end of line"));
goto error;
default:
if (pieces && *p == key_file->list_separator)
*q = key_file->list_separator;
else
{
*q++ = '\\';
*q = *p;
if (*error == NULL)
{
gchar sequence[3];
sequence[0] = '\\';
sequence[1] = *p;
sequence[2] = '\0';
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Key file contains invalid escape "
"sequence “%s”"), sequence);
goto error;
}
}
break;
}
}
else
{
*q = *p;
if (pieces && (*p == key_file->list_separator))
{
tmp_pieces = g_slist_prepend (tmp_pieces, g_strndup (q0, q - q0));
q0 = q + 1;
}
}
if (*p == '\0')
break;
q++;
p++;
}
*q = '\0';
if (pieces)
{
if (q0 < q)
tmp_pieces = g_slist_prepend (tmp_pieces, g_strndup (q0, q - q0));
*pieces = g_slist_reverse (tmp_pieces);
}
return string_value;
error:
g_free (string_value);
g_slist_free_full (tmp_pieces, g_free);
return NULL;
}
static gchar *
g_key_file_parse_string_as_value (GKeyFile *key_file,
const gchar *string,
gboolean escape_separator)
{
gchar *value, *q;
const gchar *p;
gsize length;
gboolean parsing_leading_space;
length = strlen (string) + 1;
/* Worst case would be that every character needs to be escaped.
* In other words every character turns to two characters
*/
value = g_new (gchar, 2 * length);
p = string;
q = value;
parsing_leading_space = TRUE;
while (p < (string + length - 1))
{
gchar escaped_character[3] = { '\\', 0, 0 };
switch (*p)
{
case ' ':
if (parsing_leading_space)
{
escaped_character[1] = 's';
strcpy (q, escaped_character);
q += 2;
}
else
{
*q = *p;
q++;
}
break;
case '\t':
if (parsing_leading_space)
{
escaped_character[1] = 't';
strcpy (q, escaped_character);
q += 2;
}
else
{
*q = *p;
q++;
}
break;
case '\n':
escaped_character[1] = 'n';
strcpy (q, escaped_character);
q += 2;
break;
case '\r':
escaped_character[1] = 'r';
strcpy (q, escaped_character);
q += 2;
break;
case '\\':
escaped_character[1] = '\\';
strcpy (q, escaped_character);
q += 2;
parsing_leading_space = FALSE;
break;
default:
if (escape_separator && *p == key_file->list_separator)
{
escaped_character[1] = key_file->list_separator;
strcpy (q, escaped_character);
q += 2;
parsing_leading_space = TRUE;
}
else
{
*q = *p;
q++;
parsing_leading_space = FALSE;
}
break;
}
p++;
}
*q = '\0';
return value;
}
static gint
g_key_file_parse_value_as_integer (GKeyFile *key_file,
const gchar *value,
GError **error)
{
gchar *eof_int;
glong long_value;
gint int_value;
int errsv;
errno = 0;
long_value = strtol (value, &eof_int, 10);
errsv = errno;
if (*value == '\0' || (*eof_int != '\0' && !g_ascii_isspace(*eof_int)))
{
gchar *value_utf8 = g_utf8_make_valid (value, -1);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Value “%s” cannot be interpreted "
"as a number."), value_utf8);
g_free (value_utf8);
return 0;
}
int_value = long_value;
if (int_value != long_value || errsv == ERANGE)
{
gchar *value_utf8 = g_utf8_make_valid (value, -1);
g_set_error (error,
G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Integer value “%s” out of range"),
value_utf8);
g_free (value_utf8);
return 0;
}
return int_value;
}
static gchar *
g_key_file_parse_integer_as_value (GKeyFile *key_file,
gint value)
{
return g_strdup_printf ("%d", value);
}
static gdouble
g_key_file_parse_value_as_double (GKeyFile *key_file,
const gchar *value,
GError **error)
{
gchar *end_of_valid_d;
gdouble double_value = 0;
double_value = g_ascii_strtod (value, &end_of_valid_d);
if (*end_of_valid_d != '\0' || end_of_valid_d == value)
{
gchar *value_utf8 = g_utf8_make_valid (value, -1);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Value “%s” cannot be interpreted "
"as a float number."),
value_utf8);
g_free (value_utf8);
double_value = 0;
}
return double_value;
}
static gint
strcmp_sized (const gchar *s1, size_t len1, const gchar *s2)
{
size_t len2 = strlen (s2);
return strncmp (s1, s2, MAX (len1, len2));
}
static gboolean
g_key_file_parse_value_as_boolean (GKeyFile *key_file,
const gchar *value,
GError **error)
{
gchar *value_utf8;
gint i, length = 0;
/* Count the number of non-whitespace characters */
for (i = 0; value[i]; i++)
if (!g_ascii_isspace (value[i]))
length = i + 1;
if (strcmp_sized (value, length, "true") == 0 || strcmp_sized (value, length, "1") == 0)
return TRUE;
else if (strcmp_sized (value, length, "false") == 0 || strcmp_sized (value, length, "0") == 0)
return FALSE;
value_utf8 = g_utf8_make_valid (value, -1);
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_INVALID_VALUE,
_("Value “%s” cannot be interpreted "
"as a boolean."), value_utf8);
g_free (value_utf8);
return FALSE;
}
static const gchar *
g_key_file_parse_boolean_as_value (GKeyFile *key_file,
gboolean value)
{
if (value)
return "true";
else
return "false";
}
static gchar *
g_key_file_parse_value_as_comment (GKeyFile *key_file,
const gchar *value,
gboolean is_final_line)
{
GString *string;
gchar **lines;
gsize i;
string = g_string_sized_new (512);
lines = g_strsplit (value, "\n", 0);
for (i = 0; lines[i] != NULL; i++)
{
const gchar *line = lines[i];
if (i != 0)
g_string_append_c (string, '\n');
if (line[0] == '#')
line++;
g_string_append (string, line);
}
g_strfreev (lines);
/* This function gets called once per line of a comment, but we don’t want
* to add a trailing newline. */
if (!is_final_line)
g_string_append_c (string, '\n');
return g_string_free (string, FALSE);
}
static gchar *
g_key_file_parse_comment_as_value (GKeyFile *key_file,
const gchar *comment)
{
GString *string;
gchar **lines;
gsize i;
string = g_string_sized_new (512);
lines = g_strsplit (comment, "\n", 0);
for (i = 0; lines[i] != NULL; i++)
g_string_append_printf (string, "#%s%s", lines[i],
lines[i + 1] == NULL? "" : "\n");
g_strfreev (lines);
return g_string_free (string, FALSE);
}
/**
* g_key_file_save_to_file:
* @key_file: a #GKeyFile
* @filename: the name of the file to write to
* @error: a pointer to a %NULL #GError, or %NULL
*
* Writes the contents of @key_file to @filename using
* g_file_set_contents(). If you need stricter guarantees about durability of
* the written file than are provided by g_file_set_contents(), use
* g_file_set_contents_full() with the return value of g_key_file_to_data().
*
* This function can fail for any of the reasons that
* g_file_set_contents() may fail.
*
* Returns: %TRUE if successful, else %FALSE with @error set
*
* Since: 2.40
*/
gboolean
g_key_file_save_to_file (GKeyFile *key_file,
const gchar *filename,
GError **error)
{
gchar *contents;
gboolean success;
gsize length;
g_return_val_if_fail (key_file != NULL, FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
contents = g_key_file_to_data (key_file, &length, NULL);
g_assert (contents != NULL);
success = g_file_set_contents (filename, contents, length, error);
g_free (contents);
return success;
}
Reference in New Issue View Git Blame Copy Permalink