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glib/glib/gkeyfile.c
Philip Withnall 18a232be89 glib: Various minor scan-build fixes 
These squash various warnings from `scan-build`. None of them are
legitimate bugs, but some of them do improve code readability a bit.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Helps: #1767
2019-09-05 13:51:27 +01:00

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/* 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>
*
* 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 */
#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"
/**
* SECTION:keyfile
* @title: Key-value file parser
* @short_description: 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.
*
* |[
* # 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
* Welcome[be@latin]=Hello
*
* [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:
* |[<!-- language="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:
* |[<!-- language="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;
/**
* GKeyFile:
*
* The GKeyFile struct contains only private data
* and should not be accessed directly.
*/
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;
gchar **locales;
volatile gint ref_count;
};
typedef struct _GKeyFileKeyValuePair GKeyFileKeyValuePair;
struct _GKeyFileGroup
{
const gchar *name; /* NULL for above first group (which will be comments) */
GKeyFileKeyValuePair *comment; /* Special comment that is stuck to the top of a group */
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);
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);
static gboolean g_key_file_is_group_name (const gchar *name);
static gboolean g_key_file_is_key_name (const gchar *name);
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 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 gchar *key_get_locale (const gchar *key);
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_slice_new0 (GKeyFileGroup);
key_file->groups = g_list_prepend (NULL, key_file->current_group);
key_file->group_hash = g_hash_table_new (g_str_hash, g_str_equal);
key_file->start_group = NULL;
key_file->parse_buffer = g_string_sized_new (128);
key_file->list_separator = ';';
key_file->flags = 0;
key_file->locales = g_strdupv ((gchar **)g_get_language_names ());
}
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;
}
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_slice_new0 (GKeyFile);
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)
{
gchar *candidate_file, *sub_dir;
candidate_file = (gchar *) 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, 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, 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 othewise
* 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_slice_free (GKeyFile, key_file);
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_slice_free (GKeyFile, key_file);
}
}
/* 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 i;
if (key_file->flags & G_KEY_FILE_KEEP_TRANSLATIONS)
return TRUE;
for (i = 0; key_file->locales[i] != NULL; i++)
{
if (g_ascii_strcasecmp (key_file->locales[i], locale) == 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;
gchar *line_start;
g_return_if_fail (key_file != NULL);
g_return_if_fail (line != NULL);
line_start = (gchar *) 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_slice_new (GKeyFileKeyValuePair);
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);
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, *value, *key_end, *value_start, *locale;
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);
key = g_strndup (line, key_len - 1);
if (!g_key_file_is_key_name (key))
{
g_set_error (error, G_KEY_FILE_ERROR,
G_KEY_FILE_ERROR_PARSE,
_("Invalid key name: %s"), key);
g_free (key);
return;
}
/* Pull the value from the line (chugging leading whitespace)
*/
while (g_ascii_isspace (*value_start))
value_start++;
value_len = line + length - value_start + 1;
value = g_strndup (value_start, value_len);
g_warn_if_fail (key_file->start_group != NULL);
if (key_file->current_group
&& key_file->current_group->name
&& strcmp (key_file->start_group->name,
key_file->current_group->name) == 0
&& strcmp (key, "Encoding") == 0)
{
if (g_ascii_strcasecmp (value, "UTF-8") != 0)
{
gchar *value_utf8 = g_utf8_make_valid (value, 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);
g_free (value);
return;
}
}
/* Is this key a translation? If so, is it one that we care about?
*/
locale = key_get_locale (key);
if (locale == NULL || g_key_file_locale_is_interesting (key_file, locale))
{
GKeyFileKeyValuePair *pair;
pair = g_slice_new (GKeyFileKeyValuePair);
pair->key = key;
pair->value = value;
g_key_file_add_key_value_pair (key_file, key_file->current_group, pair);
}
else
{
g_free (key);
g_free (value);
}
g_free (locale);
}
static gchar *
key_get_locale (const gchar *key)
{
gchar *locale;
locale = g_strrstr (key, "[");
if (locale && strlen (locale) <= 2)
locale = NULL;
if (locale)
locale = g_strndup (locale + 1, strlen (locale) - 2);
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;
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);
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;
/* separate groups by at least an empty line */
if (data_string->len >= 2 &&
data_string->str[data_string->len - 2] != '\n')
g_string_append_c (data_string, '\n');
if (group->comment != NULL)
g_string_append_printf (data_string, "%s\n", group->comment->value);
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: 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 (g_key_file_is_group_name (group_name));
g_return_if_fail (g_key_file_is_key_name (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);
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;
g_free (translated_value);
translated_value = NULL;
}
/* 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)
{
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_free (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++)
{
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_free (value);
}
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_slice_new (GKeyFileKeyValuePair);
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_group_comment (GKeyFile *key_file,
const gchar *group_name,
const gchar *comment,
GError **error)
{
GKeyFileGroup *group;
g_return_val_if_fail (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 ? group_name : "(null)");
return FALSE;
}
/* First remove any existing comment
*/
if (group->comment)
{
g_key_file_key_value_pair_free (group->comment);
group->comment = NULL;
}
if (comment == NULL)
return TRUE;
/* Now we can add our new comment
*/
group->comment = g_slice_new (GKeyFileKeyValuePair);
group->comment->key = NULL;
group->comment->value = g_key_file_parse_comment_as_value (key_file, comment);
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_slice_new (GKeyFileKeyValuePair);
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 (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 concatentate 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 = string->str;
g_string_free (string, FALSE);
}
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;
}
if (group->comment)
return g_strdup (group->comment->value);
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: 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)
{
GKeyFileGroup *group;
g_return_if_fail (key_file != NULL);
g_return_if_fail (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_slice_new0 (GKeyFileGroup);
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;
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_slice_free (GKeyFileKeyValuePair, pair);
}
}
/* 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_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->comment)
{
g_key_file_key_value_pair_free (group->comment);
group->comment = NULL;
}
if (group->lookup_map)
{
g_hash_table_destroy (group->lookup_map);
group->lookup_map = NULL;
}
g_free ((gchar *) group->name);
g_slice_free (GKeyFileGroup, group);
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)
{
g_hash_table_replace (group->lookup_map, pair->key, pair);
group->key_value_pairs = g_list_prepend (group->key_value_pairs, pair);
}
static void
g_key_file_add_key (GKeyFile *key_file,
GKeyFileGroup *group,
const gchar *key,
const gchar *value)
{
GKeyFileKeyValuePair *pair;
pair = g_slice_new (GKeyFileKeyValuePair);
pair->key = g_strdup (key);
pair->value = g_strdup (value);
g_key_file_add_key_value_pair (key_file, group, pair);
}
/**
* 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;
GList *tmp;
for (tmp = key_file->groups; tmp != NULL; tmp = tmp->next)
{
group = (GKeyFileGroup *) tmp->data;
if (group && group->name && strcmp (group->name, group_name) == 0)
break;
}
return tmp;
}
static GKeyFileGroup *
g_key_file_lookup_group (GKeyFile *key_file,
const gchar *group_name)
{
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)
{
gchar *p, *q;
if (name == NULL)
return FALSE;
p = q = (gchar *) 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)
{
gchar *p, *q;
if (name == NULL)
return FALSE;
p = q = (gchar *) name;
/* We accept a little more than the desktop entry spec says,
* since gnome-vfs uses mime-types as keys in its cache.
*/
while (*q && *q != '=' && *q != '[' && *q != ']')
q = g_utf8_find_next_char (q, NULL);
/* 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 && (g_unichar_isalnum (g_utf8_get_char_validated (q, -1)) || *q == '-' || *q == '_' || *q == '.' || *q == '@'))
q = g_utf8_find_next_char (q, NULL);
if (*q != ']')
return FALSE;
q++;
}
if (*q != '\0')
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)
{
gchar *p;
p = (gchar *) 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)
{
gchar *p;
p = (gchar *) 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, *p, *q0, *q;
string_value = g_new (gchar, strlen (value) + 1);
p = (gchar *) 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"));
break;
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);
}
}
break;
}
}
else
{
*q = *p;
if (pieces && (*p == key_file->list_separator))
{
*pieces = g_slist_prepend (*pieces, g_strndup (q0, q - q0));
q0 = q + 1;
}
}
if (*p == '\0')
break;
q++;
p++;
}
*q = '\0';
if (pieces)
{
if (q0 < q)
*pieces = g_slist_prepend (*pieces, g_strndup (q0, q - q0));
*pieces = g_slist_reverse (*pieces);
}
return string_value;
}
static gchar *
g_key_file_parse_string_as_value (GKeyFile *key_file,
const gchar *string,
gboolean escape_separator)
{
gchar *value, *p, *q;
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 = (gchar *) 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 gchar *
g_key_file_parse_boolean_as_value (GKeyFile *key_file,
gboolean value)
{
if (value)
return g_strdup ("true");
else
return g_strdup ("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().
*
* 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;
}
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