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glib/glib/gstrfuncs.c
Havoc Pennington 1c391cc698 include string.h 
2001-02-17  Havoc Pennington  <hp@pobox.com>

	* gthread.c: include string.h

        Applied patch from Soeren Sandmann:

	* testglib.c: const fixes

	* gwin32.h: format cleanups

	* gutils.c (g_atexit): constify a variable
	(g_find_program_in_path): constification
	(g_basename): G_CONST_RETURN
	(g_path_skip_root): G_CONST_RETURN
	(g_getenv): G_CONST_RETURN
	(g_get_user_name): G_CONST_RETURN
	(g_get_real_name): G_CONST_RETURN
	(g_get_home_dir): G_CONST_RETURN
	(g_get_tmp_dir): G_CONST_RETURN
	(g_get_prgname): G_CONST_RETURN
	(_glib_gettext): G_CONST_RETURN

	* gunicode.h: formatting cleanups

	* gstrfuncs.c (g_strerror): G_CONST_RETURN
	(g_strsignal): G_CONST_RETURN

	* gspawn.c (g_execute): const on variables

	* gmessages.c (printf_string_upper_bound): fix const on a variable

	* gmem.c (g_mem_chunk_new): make the "name" arg const
	(struct _GRealMemChunk): make the "name" field const

	* gfileutils.c (g_file_open_tmp): store const return in a const
	gchar* variable

	* gdataset.c (g_quark_to_string): G_CONST_RETURN

2001-02-17  Havoc Pennington  <hp@pobox.com>

        Applied patch from Soeren Sandmann:

	* gvaluetypes.c (g_value_get_string): G_CONST_RETURN

	* gtype.c (g_type_name): G_CONST_RETURN

	* gsignal.c (g_signal_name): G_CONST_RETURN

	* gobject-query.c (main): const fix

2001-02-17  Havoc Pennington  <hp@pobox.com>

        Applied patch from Soeren Sandmann:

	* gmodule.c (g_module_error): G_CONST_RETURN
	(g_module_name): G_CONST_RETURN
2001-02-17 23:30:48 +00:00

1456 lines
30 KiB
C
Raw Blame History

/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
/*
* MT safe
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <ctype.h> /* For tolower() */
#if !defined (HAVE_STRSIGNAL) || !defined(NO_SYS_SIGLIST_DECL)
#include <signal.h>
#endif
#include "glib.h"
#ifdef G_OS_WIN32
#include <windows.h>
#endif
/* do not include <unistd.h> in this place since it
* inteferes with g_strsignal() on some OSes
*/
gchar*
g_strdup (const gchar *str)
{
gchar *new_str;
if (str)
{
new_str = g_new (char, strlen (str) + 1);
strcpy (new_str, str);
}
else
new_str = NULL;
return new_str;
}
gpointer
g_memdup (gconstpointer mem,
guint byte_size)
{
gpointer new_mem;
if (mem)
{
new_mem = g_malloc (byte_size);
memcpy (new_mem, mem, byte_size);
}
else
new_mem = NULL;
return new_mem;
}
gchar*
g_strndup (const gchar *str,
guint n)
{
gchar *new_str;
if (str)
{
new_str = g_new (gchar, n + 1);
strncpy (new_str, str, n);
new_str[n] = '\0';
}
else
new_str = NULL;
return new_str;
}
gchar*
g_strnfill (guint length,
gchar fill_char)
{
register gchar *str, *s, *end;
str = g_new (gchar, length + 1);
s = str;
end = str + length;
while (s < end)
*(s++) = fill_char;
*s = 0;
return str;
}
gchar*
g_strdup_vprintf (const gchar *format,
va_list args1)
{
gchar *buffer;
va_list args2;
G_VA_COPY (args2, args1);
buffer = g_new (gchar, g_printf_string_upper_bound (format, args1));
vsprintf (buffer, format, args2);
va_end (args2);
return buffer;
}
gchar*
g_strdup_printf (const gchar *format,
...)
{
gchar *buffer;
va_list args;
va_start (args, format);
buffer = g_strdup_vprintf (format, args);
va_end (args);
return buffer;
}
gchar*
g_strconcat (const gchar *string1, ...)
{
guint l;
va_list args;
gchar *s;
gchar *concat;
g_return_val_if_fail (string1 != NULL, NULL);
l = 1 + strlen (string1);
va_start (args, string1);
s = va_arg (args, gchar*);
while (s)
{
l += strlen (s);
s = va_arg (args, gchar*);
}
va_end (args);
concat = g_new (gchar, l);
concat[0] = 0;
strcat (concat, string1);
va_start (args, string1);
s = va_arg (args, gchar*);
while (s)
{
strcat (concat, s);
s = va_arg (args, gchar*);
}
va_end (args);
return concat;
}
gdouble
g_strtod (const gchar *nptr,
gchar **endptr)
{
gchar *fail_pos_1;
gchar *fail_pos_2;
gdouble val_1;
gdouble val_2 = 0;
g_return_val_if_fail (nptr != NULL, 0);
fail_pos_1 = NULL;
fail_pos_2 = NULL;
val_1 = strtod (nptr, &fail_pos_1);
if (fail_pos_1 && fail_pos_1[0] != 0)
{
gchar *old_locale;
old_locale = g_strdup (setlocale (LC_NUMERIC, NULL));
setlocale (LC_NUMERIC, "C");
val_2 = strtod (nptr, &fail_pos_2);
setlocale (LC_NUMERIC, old_locale);
g_free (old_locale);
}
if (!fail_pos_1 || fail_pos_1[0] == 0 || fail_pos_1 >= fail_pos_2)
{
if (endptr)
*endptr = fail_pos_1;
return val_1;
}
else
{
if (endptr)
*endptr = fail_pos_2;
return val_2;
}
}
G_CONST_RETURN gchar*
g_strerror (gint errnum)
{
static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
char *msg;
#ifdef HAVE_STRERROR
return strerror (errnum);
#elif NO_SYS_ERRLIST
switch (errnum)
{
#ifdef E2BIG
case E2BIG: return "argument list too long";
#endif
#ifdef EACCES
case EACCES: return "permission denied";
#endif
#ifdef EADDRINUSE
case EADDRINUSE: return "address already in use";
#endif
#ifdef EADDRNOTAVAIL
case EADDRNOTAVAIL: return "can't assign requested address";
#endif
#ifdef EADV
case EADV: return "advertise error";
#endif
#ifdef EAFNOSUPPORT
case EAFNOSUPPORT: return "address family not supported by protocol family";
#endif
#ifdef EAGAIN
case EAGAIN: return "try again";
#endif
#ifdef EALIGN
case EALIGN: return "EALIGN";
#endif
#ifdef EALREADY
case EALREADY: return "operation already in progress";
#endif
#ifdef EBADE
case EBADE: return "bad exchange descriptor";
#endif
#ifdef EBADF
case EBADF: return "bad file number";
#endif
#ifdef EBADFD
case EBADFD: return "file descriptor in bad state";
#endif
#ifdef EBADMSG
case EBADMSG: return "not a data message";
#endif
#ifdef EBADR
case EBADR: return "bad request descriptor";
#endif
#ifdef EBADRPC
case EBADRPC: return "RPC structure is bad";
#endif
#ifdef EBADRQC
case EBADRQC: return "bad request code";
#endif
#ifdef EBADSLT
case EBADSLT: return "invalid slot";
#endif
#ifdef EBFONT
case EBFONT: return "bad font file format";
#endif
#ifdef EBUSY
case EBUSY: return "mount device busy";
#endif
#ifdef ECHILD
case ECHILD: return "no children";
#endif
#ifdef ECHRNG
case ECHRNG: return "channel number out of range";
#endif
#ifdef ECOMM
case ECOMM: return "communication error on send";
#endif
#ifdef ECONNABORTED
case ECONNABORTED: return "software caused connection abort";
#endif
#ifdef ECONNREFUSED
case ECONNREFUSED: return "connection refused";
#endif
#ifdef ECONNRESET
case ECONNRESET: return "connection reset by peer";
#endif
#if defined(EDEADLK) && (!defined(EWOULDBLOCK) || (EDEADLK != EWOULDBLOCK))
case EDEADLK: return "resource deadlock avoided";
#endif
#ifdef EDEADLOCK
case EDEADLOCK: return "resource deadlock avoided";
#endif
#ifdef EDESTADDRREQ
case EDESTADDRREQ: return "destination address required";
#endif
#ifdef EDIRTY
case EDIRTY: return "mounting a dirty fs w/o force";
#endif
#ifdef EDOM
case EDOM: return "math argument out of range";
#endif
#ifdef EDOTDOT
case EDOTDOT: return "cross mount point";
#endif
#ifdef EDQUOT
case EDQUOT: return "disk quota exceeded";
#endif
#ifdef EDUPPKG
case EDUPPKG: return "duplicate package name";
#endif
#ifdef EEXIST
case EEXIST: return "file already exists";
#endif
#ifdef EFAULT
case EFAULT: return "bad address in system call argument";
#endif
#ifdef EFBIG
case EFBIG: return "file too large";
#endif
#ifdef EHOSTDOWN
case EHOSTDOWN: return "host is down";
#endif
#ifdef EHOSTUNREACH
case EHOSTUNREACH: return "host is unreachable";
#endif
#ifdef EIDRM
case EIDRM: return "identifier removed";
#endif
#ifdef EINIT
case EINIT: return "initialization error";
#endif
#ifdef EINPROGRESS
case EINPROGRESS: return "operation now in progress";
#endif
#ifdef EINTR
case EINTR: return "interrupted system call";
#endif
#ifdef EINVAL
case EINVAL: return "invalid argument";
#endif
#ifdef EIO
case EIO: return "I/O error";
#endif
#ifdef EISCONN
case EISCONN: return "socket is already connected";
#endif
#ifdef EISDIR
case EISDIR: return "illegal operation on a directory";
#endif
#ifdef EISNAME
case EISNAM: return "is a name file";
#endif
#ifdef ELBIN
case ELBIN: return "ELBIN";
#endif
#ifdef EL2HLT
case EL2HLT: return "level 2 halted";
#endif
#ifdef EL2NSYNC
case EL2NSYNC: return "level 2 not synchronized";
#endif
#ifdef EL3HLT
case EL3HLT: return "level 3 halted";
#endif
#ifdef EL3RST
case EL3RST: return "level 3 reset";
#endif
#ifdef ELIBACC
case ELIBACC: return "can not access a needed shared library";
#endif
#ifdef ELIBBAD
case ELIBBAD: return "accessing a corrupted shared library";
#endif
#ifdef ELIBEXEC
case ELIBEXEC: return "can not exec a shared library directly";
#endif
#ifdef ELIBMAX
case ELIBMAX: return "attempting to link in more shared libraries than system limit";
#endif
#ifdef ELIBSCN
case ELIBSCN: return ".lib section in a.out corrupted";
#endif
#ifdef ELNRNG
case ELNRNG: return "link number out of range";
#endif
#ifdef ELOOP
case ELOOP: return "too many levels of symbolic links";
#endif
#ifdef EMFILE
case EMFILE: return "too many open files";
#endif
#ifdef EMLINK
case EMLINK: return "too many links";
#endif
#ifdef EMSGSIZE
case EMSGSIZE: return "message too long";
#endif
#ifdef EMULTIHOP
case EMULTIHOP: return "multihop attempted";
#endif
#ifdef ENAMETOOLONG
case ENAMETOOLONG: return "file name too long";
#endif
#ifdef ENAVAIL
case ENAVAIL: return "not available";
#endif
#ifdef ENET
case ENET: return "ENET";
#endif
#ifdef ENETDOWN
case ENETDOWN: return "network is down";
#endif
#ifdef ENETRESET
case ENETRESET: return "network dropped connection on reset";
#endif
#ifdef ENETUNREACH
case ENETUNREACH: return "network is unreachable";
#endif
#ifdef ENFILE
case ENFILE: return "file table overflow";
#endif
#ifdef ENOANO
case ENOANO: return "anode table overflow";
#endif
#if defined(ENOBUFS) && (!defined(ENOSR) || (ENOBUFS != ENOSR))
case ENOBUFS: return "no buffer space available";
#endif
#ifdef ENOCSI
case ENOCSI: return "no CSI structure available";
#endif
#ifdef ENODATA
case ENODATA: return "no data available";
#endif
#ifdef ENODEV
case ENODEV: return "no such device";
#endif
#ifdef ENOENT
case ENOENT: return "no such file or directory";
#endif
#ifdef ENOEXEC
case ENOEXEC: return "exec format error";
#endif
#ifdef ENOLCK
case ENOLCK: return "no locks available";
#endif
#ifdef ENOLINK
case ENOLINK: return "link has be severed";
#endif
#ifdef ENOMEM
case ENOMEM: return "not enough memory";
#endif
#ifdef ENOMSG
case ENOMSG: return "no message of desired type";
#endif
#ifdef ENONET
case ENONET: return "machine is not on the network";
#endif
#ifdef ENOPKG
case ENOPKG: return "package not installed";
#endif
#ifdef ENOPROTOOPT
case ENOPROTOOPT: return "bad proocol option";
#endif
#ifdef ENOSPC
case ENOSPC: return "no space left on device";
#endif
#ifdef ENOSR
case ENOSR: return "out of stream resources";
#endif
#ifdef ENOSTR
case ENOSTR: return "not a stream device";
#endif
#ifdef ENOSYM
case ENOSYM: return "unresolved symbol name";
#endif
#ifdef ENOSYS
case ENOSYS: return "function not implemented";
#endif
#ifdef ENOTBLK
case ENOTBLK: return "block device required";
#endif
#ifdef ENOTCONN
case ENOTCONN: return "socket is not connected";
#endif
#ifdef ENOTDIR
case ENOTDIR: return "not a directory";
#endif
#ifdef ENOTEMPTY
case ENOTEMPTY: return "directory not empty";
#endif
#ifdef ENOTNAM
case ENOTNAM: return "not a name file";
#endif
#ifdef ENOTSOCK
case ENOTSOCK: return "socket operation on non-socket";
#endif
#ifdef ENOTTY
case ENOTTY: return "inappropriate device for ioctl";
#endif
#ifdef ENOTUNIQ
case ENOTUNIQ: return "name not unique on network";
#endif
#ifdef ENXIO
case ENXIO: return "no such device or address";
#endif
#ifdef EOPNOTSUPP
case EOPNOTSUPP: return "operation not supported on socket";
#endif
#ifdef EPERM
case EPERM: return "not owner";
#endif
#ifdef EPFNOSUPPORT
case EPFNOSUPPORT: return "protocol family not supported";
#endif
#ifdef EPIPE
case EPIPE: return "broken pipe";
#endif
#ifdef EPROCLIM
case EPROCLIM: return "too many processes";
#endif
#ifdef EPROCUNAVAIL
case EPROCUNAVAIL: return "bad procedure for program";
#endif
#ifdef EPROGMISMATCH
case EPROGMISMATCH: return "program version wrong";
#endif
#ifdef EPROGUNAVAIL
case EPROGUNAVAIL: return "RPC program not available";
#endif
#ifdef EPROTO
case EPROTO: return "protocol error";
#endif
#ifdef EPROTONOSUPPORT
case EPROTONOSUPPORT: return "protocol not suppored";
#endif
#ifdef EPROTOTYPE
case EPROTOTYPE: return "protocol wrong type for socket";
#endif
#ifdef ERANGE
case ERANGE: return "math result unrepresentable";
#endif
#if defined(EREFUSED) && (!defined(ECONNREFUSED) || (EREFUSED != ECONNREFUSED))
case EREFUSED: return "EREFUSED";
#endif
#ifdef EREMCHG
case EREMCHG: return "remote address changed";
#endif
#ifdef EREMDEV
case EREMDEV: return "remote device";
#endif
#ifdef EREMOTE
case EREMOTE: return "pathname hit remote file system";
#endif
#ifdef EREMOTEIO
case EREMOTEIO: return "remote i/o error";
#endif
#ifdef EREMOTERELEASE
case EREMOTERELEASE: return "EREMOTERELEASE";
#endif
#ifdef EROFS
case EROFS: return "read-only file system";
#endif
#ifdef ERPCMISMATCH
case ERPCMISMATCH: return "RPC version is wrong";
#endif
#ifdef ERREMOTE
case ERREMOTE: return "object is remote";
#endif
#ifdef ESHUTDOWN
case ESHUTDOWN: return "can't send afer socket shutdown";
#endif
#ifdef ESOCKTNOSUPPORT
case ESOCKTNOSUPPORT: return "socket type not supported";
#endif
#ifdef ESPIPE
case ESPIPE: return "invalid seek";
#endif
#ifdef ESRCH
case ESRCH: return "no such process";
#endif
#ifdef ESRMNT
case ESRMNT: return "srmount error";
#endif
#ifdef ESTALE
case ESTALE: return "stale remote file handle";
#endif
#ifdef ESUCCESS
case ESUCCESS: return "Error 0";
#endif
#ifdef ETIME
case ETIME: return "timer expired";
#endif
#ifdef ETIMEDOUT
case ETIMEDOUT: return "connection timed out";
#endif
#ifdef ETOOMANYREFS
case ETOOMANYREFS: return "too many references: can't splice";
#endif
#ifdef ETXTBSY
case ETXTBSY: return "text file or pseudo-device busy";
#endif
#ifdef EUCLEAN
case EUCLEAN: return "structure needs cleaning";
#endif
#ifdef EUNATCH
case EUNATCH: return "protocol driver not attached";
#endif
#ifdef EUSERS
case EUSERS: return "too many users";
#endif
#ifdef EVERSION
case EVERSION: return "version mismatch";
#endif
#if defined(EWOULDBLOCK) && (!defined(EAGAIN) || (EWOULDBLOCK != EAGAIN))
case EWOULDBLOCK: return "operation would block";
#endif
#ifdef EXDEV
case EXDEV: return "cross-domain link";
#endif
#ifdef EXFULL
case EXFULL: return "message tables full";
#endif
}
#else /* NO_SYS_ERRLIST */
extern int sys_nerr;
extern char *sys_errlist[];
if ((errnum > 0) && (errnum <= sys_nerr))
return sys_errlist [errnum];
#endif /* NO_SYS_ERRLIST */
msg = g_static_private_get (&msg_private);
if (!msg)
{
msg = g_new (gchar, 64);
g_static_private_set (&msg_private, msg, g_free);
}
sprintf (msg, "unknown error (%d)", errnum);
return msg;
}
G_CONST_RETURN gchar*
g_strsignal (gint signum)
{
static GStaticPrivate msg_private = G_STATIC_PRIVATE_INIT;
char *msg;
#ifdef HAVE_STRSIGNAL
#if defined(G_OS_BEOS) || defined(G_WITH_CYGWIN)
extern const char * strsignal(int);
#else /* !G_OS_BEOS */
/* this is declared differently (const) in string.h on BeOS */
extern char *strsignal (int sig);
#endif /* !G_OS_BEOS */
return strsignal (signum);
#elif NO_SYS_SIGLIST
switch (signum)
{
#ifdef SIGHUP
case SIGHUP: return "Hangup";
#endif
#ifdef SIGINT
case SIGINT: return "Interrupt";
#endif
#ifdef SIGQUIT
case SIGQUIT: return "Quit";
#endif
#ifdef SIGILL
case SIGILL: return "Illegal instruction";
#endif
#ifdef SIGTRAP
case SIGTRAP: return "Trace/breakpoint trap";
#endif
#ifdef SIGABRT
case SIGABRT: return "IOT trap/Abort";
#endif
#ifdef SIGBUS
case SIGBUS: return "Bus error";
#endif
#ifdef SIGFPE
case SIGFPE: return "Floating point exception";
#endif
#ifdef SIGKILL
case SIGKILL: return "Killed";
#endif
#ifdef SIGUSR1
case SIGUSR1: return "User defined signal 1";
#endif
#ifdef SIGSEGV
case SIGSEGV: return "Segmentation fault";
#endif
#ifdef SIGUSR2
case SIGUSR2: return "User defined signal 2";
#endif
#ifdef SIGPIPE
case SIGPIPE: return "Broken pipe";
#endif
#ifdef SIGALRM
case SIGALRM: return "Alarm clock";
#endif
#ifdef SIGTERM
case SIGTERM: return "Terminated";
#endif
#ifdef SIGSTKFLT
case SIGSTKFLT: return "Stack fault";
#endif
#ifdef SIGCHLD
case SIGCHLD: return "Child exited";
#endif
#ifdef SIGCONT
case SIGCONT: return "Continued";
#endif
#ifdef SIGSTOP
case SIGSTOP: return "Stopped (signal)";
#endif
#ifdef SIGTSTP
case SIGTSTP: return "Stopped";
#endif
#ifdef SIGTTIN
case SIGTTIN: return "Stopped (tty input)";
#endif
#ifdef SIGTTOU
case SIGTTOU: return "Stopped (tty output)";
#endif
#ifdef SIGURG
case SIGURG: return "Urgent condition";
#endif
#ifdef SIGXCPU
case SIGXCPU: return "CPU time limit exceeded";
#endif
#ifdef SIGXFSZ
case SIGXFSZ: return "File size limit exceeded";
#endif
#ifdef SIGVTALRM
case SIGVTALRM: return "Virtual time alarm";
#endif
#ifdef SIGPROF
case SIGPROF: return "Profile signal";
#endif
#ifdef SIGWINCH
case SIGWINCH: return "Window size changed";
#endif
#ifdef SIGIO
case SIGIO: return "Possible I/O";
#endif
#ifdef SIGPWR
case SIGPWR: return "Power failure";
#endif
#ifdef SIGUNUSED
case SIGUNUSED: return "Unused signal";
#endif
}
#else /* NO_SYS_SIGLIST */
#ifdef NO_SYS_SIGLIST_DECL
extern char *sys_siglist[]; /*(see Tue Jan 19 00:44:24 1999 in changelog)*/
#endif
return (char*) /* this function should return const --josh */ sys_siglist [signum];
#endif /* NO_SYS_SIGLIST */
msg = g_static_private_get (&msg_private);
if (!msg)
{
msg = g_new (gchar, 64);
g_static_private_set (&msg_private, msg, g_free);
}
sprintf (msg, "unknown signal (%d)", signum);
return msg;
}
/* Functions g_strlcpy and g_strlcat were originally developed by
* Todd C. Miller <Todd.Miller@courtesan.com> to simplify writing secure code.
* See ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/strlcpy.3
* for more information.
*/
#ifdef HAVE_STRLCPY
/* Use the native ones, if available; they might be implemented in assembly */
gsize
g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size)
{
g_return_val_if_fail (dest != NULL, 0);
g_return_val_if_fail (src != NULL, 0);
return strlcpy (dest, src, dest_size);
}
gsize
g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size)
{
g_return_val_if_fail (dest != NULL, 0);
g_return_val_if_fail (src != NULL, 0);
return strlcat (dest, src, dest_size);
}
#else /* ! HAVE_STRLCPY */
/* g_strlcpy
*
* Copy string src to buffer dest (of buffer size dest_size). At most
* dest_size-1 characters will be copied. Always NUL terminates
* (unless dest_size == 0). This function does NOT allocate memory.
* Unlike strncpy, this function doesn't pad dest (so it's often faster).
* Returns size of attempted result, strlen(src),
* so if retval >= dest_size, truncation occurred.
*/
gsize
g_strlcpy (gchar *dest,
const gchar *src,
gsize dest_size)
{
register gchar *d = dest;
register const gchar *s = src;
register gsize n = dest_size;
g_return_val_if_fail (dest != NULL, 0);
g_return_val_if_fail (src != NULL, 0);
/* Copy as many bytes as will fit */
if (n != 0 && --n != 0)
do
{
register gchar c = *s++;
*d++ = c;
if (c == 0)
break;
}
while (--n != 0);
/* If not enough room in dest, add NUL and traverse rest of src */
if (n == 0)
{
if (dest_size != 0)
*d = 0;
while (*s++)
;
}
return s - src - 1; /* count does not include NUL */
}
/* g_strlcat
*
* Appends string src to buffer dest (of buffer size dest_size).
* At most dest_size-1 characters will be copied.
* Unlike strncat, dest_size is the full size of dest, not the space left over.
* This function does NOT allocate memory.
* This always NUL terminates (unless siz == 0 or there were no NUL characters
* in the dest_size characters of dest to start with).
* Returns size of attempted result, which is
* MIN (dest_size, strlen (original dest)) + strlen (src),
* so if retval >= dest_size, truncation occurred.
*/
gsize
g_strlcat (gchar *dest,
const gchar *src,
gsize dest_size)
{
register gchar *d = dest;
register const gchar *s = src;
register gsize bytes_left = dest_size;
gsize dlength; /* Logically, MIN (strlen (d), dest_size) */
g_return_val_if_fail (dest != NULL, 0);
g_return_val_if_fail (src != NULL, 0);
/* Find the end of dst and adjust bytes left but don't go past end */
while (*d != 0 && bytes_left-- != 0)
d++;
dlength = d - dest;
bytes_left = dest_size - dlength;
if (bytes_left == 0)
return dlength + strlen (s);
while (*s != 0)
{
if (bytes_left != 1)
{
*d++ = *s;
bytes_left--;
}
s++;
}
*d = 0;
return dlength + (s - src); /* count does not include NUL */
}
#endif /* ! HAVE_STRLCPY */
gchar*
g_strdown (gchar *string)
{
register guchar *s;
g_return_val_if_fail (string != NULL, NULL);
s = (guchar *) string;
while (*s)
{
*s = tolower (*s);
s++;
}
return (gchar *) string;
}
gchar*
g_strup (gchar *string)
{
register guchar *s;
g_return_val_if_fail (string != NULL, NULL);
s = (guchar *) string;
while (*s)
{
*s = toupper (*s);
s++;
}
return (gchar *) string;
}
gchar*
g_strreverse (gchar *string)
{
g_return_val_if_fail (string != NULL, NULL);
if (*string)
{
register gchar *h, *t;
h = string;
t = string + strlen (string) - 1;
while (h < t)
{
register gchar c;
c = *h;
*h = *t;
h++;
*t = c;
t--;
}
}
return string;
}
gint
g_strcasecmp (const gchar *s1,
const gchar *s2)
{
#ifdef HAVE_STRCASECMP
g_return_val_if_fail (s1 != NULL, 0);
g_return_val_if_fail (s2 != NULL, 0);
return strcasecmp (s1, s2);
#else
gint c1, c2;
g_return_val_if_fail (s1 != NULL, 0);
g_return_val_if_fail (s2 != NULL, 0);
while (*s1 && *s2)
{
/* According to A. Cox, some platforms have islower's that
* don't work right on non-uppercase
*/
c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
if (c1 != c2)
return (c1 - c2);
s1++; s2++;
}
return (((gint)(guchar) *s1) - ((gint)(guchar) *s2));
#endif
}
gint
g_strncasecmp (const gchar *s1,
const gchar *s2,
guint n)
{
#ifdef HAVE_STRNCASECMP
return strncasecmp (s1, s2, n);
#else
gint c1, c2;
g_return_val_if_fail (s1 != NULL, 0);
g_return_val_if_fail (s2 != NULL, 0);
while (n && *s1 && *s2)
{
n -= 1;
/* According to A. Cox, some platforms have islower's that
* don't work right on non-uppercase
*/
c1 = isupper ((guchar)*s1) ? tolower ((guchar)*s1) : *s1;
c2 = isupper ((guchar)*s2) ? tolower ((guchar)*s2) : *s2;
if (c1 != c2)
return (c1 - c2);
s1++; s2++;
}
if (n)
return (((gint) (guchar) *s1) - ((gint) (guchar) *s2));
else
return 0;
#endif
}
gchar*
g_strdelimit (gchar *string,
const gchar *delimiters,
gchar new_delim)
{
register gchar *c;
g_return_val_if_fail (string != NULL, NULL);
if (!delimiters)
delimiters = G_STR_DELIMITERS;
for (c = string; *c; c++)
{
if (strchr (delimiters, *c))
*c = new_delim;
}
return string;
}
gchar*
g_strcanon (gchar *string,
const gchar *valid_chars,
gchar subsitutor)
{
register gchar *c;
g_return_val_if_fail (string != NULL, NULL);
g_return_val_if_fail (valid_chars != NULL, NULL);
for (c = string; *c; c++)
{
if (!strchr (valid_chars, *c))
*c = subsitutor;
}
return string;
}
gchar*
g_strcompress (const gchar *source)
{
const gchar *p = source, *octal;
gchar *dest = g_malloc (strlen (source) + 1);
gchar *q = dest;
while (*p)
{
if (*p == '\\')
{
p++;
switch (*p)
{
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7':
*q = 0;
octal = p;
while ((p < octal + 3) && (*p >= '0') && (*p <= '7'))
{
*q = (*q * 8) + (*p - '0');
p++;
}
q++;
p--;
break;
case 'b':
*q++ = '\b';
break;
case 'f':
*q++ = '\f';
break;
case 'n':
*q++ = '\n';
break;
case 'r':
*q++ = '\r';
break;
case 't':
*q++ = '\t';
break;
default: /* Also handles \" and \\ */
*q++ = *p;
break;
}
}
else
*q++ = *p;
p++;
}
*q = 0;
return dest;
}
gchar *
g_strescape (const gchar *source,
const gchar *exceptions)
{
const guchar *p;
gchar *dest;
gchar *q;
guchar excmap[256];
g_return_val_if_fail (source != NULL, NULL);
p = (guchar *) source;
/* Each source byte needs maximally four destination chars (\777) */
q = dest = g_malloc (strlen (source) * 4 + 1);
memset (excmap, 0, 256);
if (exceptions)
{
guchar *e = (guchar *) exceptions;
while (*e)
{
excmap[*e] = 1;
e++;
}
}
while (*p)
{
if (excmap[*p])
*q++ = *p;
else
{
switch (*p)
{
case '\b':
*q++ = '\\';
*q++ = 'b';
break;
case '\f':
*q++ = '\\';
*q++ = 'f';
break;
case '\n':
*q++ = '\\';
*q++ = 'n';
break;
case '\r':
*q++ = '\\';
*q++ = 'r';
break;
case '\t':
*q++ = '\\';
*q++ = 't';
break;
case '\\':
*q++ = '\\';
*q++ = '\\';
break;
case '"':
*q++ = '\\';
*q++ = '"';
break;
default:
if ((*p < ' ') || (*p >= 0177))
{
*q++ = '\\';
*q++ = '0' + (((*p) >> 6) & 07);
*q++ = '0' + (((*p) >> 3) & 07);
*q++ = '0' + ((*p) & 07);
}
else
*q++ = *p;
break;
}
}
p++;
}
*q = 0;
return dest;
}
gchar*
g_strchug (gchar *string)
{
guchar *start;
g_return_val_if_fail (string != NULL, NULL);
for (start = (guchar*) string; *start && isspace (*start); start++)
;
g_memmove (string, start, strlen ((gchar *) start) + 1);
return string;
}
gchar*
g_strchomp (gchar *string)
{
gchar *s;
g_return_val_if_fail (string != NULL, NULL);
if (!*string)
return string;
for (s = string + strlen (string) - 1; s >= string && isspace ((guchar)*s);
s--)
*s = '\0';
return string;
}
gchar**
g_strsplit (const gchar *string,
const gchar *delimiter,
gint max_tokens)
{
GSList *string_list = NULL, *slist;
gchar **str_array, *s;
guint n = 1;
g_return_val_if_fail (string != NULL, NULL);
g_return_val_if_fail (delimiter != NULL, NULL);
if (max_tokens < 1)
max_tokens = G_MAXINT;
s = strstr (string, delimiter);
if (s)
{
guint delimiter_len = strlen (delimiter);
do
{
guint len;
gchar *new_string;
len = s - string;
new_string = g_new (gchar, len + 1);
strncpy (new_string, string, len);
new_string[len] = 0;
string_list = g_slist_prepend (string_list, new_string);
n++;
string = s + delimiter_len;
s = strstr (string, delimiter);
}
while (--max_tokens && s);
}
string_list = g_slist_prepend (string_list, g_strdup (string));
str_array = g_new (gchar*, n + 1);
str_array[n--] = NULL;
for (slist = string_list; slist; slist = slist->next)
str_array[n--] = slist->data;
g_slist_free (string_list);
return str_array;
}
void
g_strfreev (gchar **str_array)
{
if (str_array)
{
int i;
for(i = 0; str_array[i] != NULL; i++)
g_free(str_array[i]);
g_free (str_array);
}
}
/**
* g_strdupv:
* @str_array: %NULL-terminated array of strings
*
* Copies %NULL-terminated array of strings. The copy is a deep copy;
* the new array should be freed by first freeing each string, then
* the array itself. g_strfreev() does this for you. If called
* on a %NULL value, g_strdupv() simply returns %NULL.
*
* Return value: a new %NULL-terminated array of strings
**/
gchar**
g_strdupv (gchar **str_array)
{
if (str_array)
{
gint i;
gchar **retval;
i = 0;
while (str_array[i])
++i;
retval = g_new (gchar*, i + 1);
i = 0;
while (str_array[i])
{
retval[i] = g_strdup (str_array[i]);
++i;
}
retval[i] = NULL;
return retval;
}
else
return NULL;
}
gchar*
g_strjoinv (const gchar *separator,
gchar **str_array)
{
gchar *string;
g_return_val_if_fail (str_array != NULL, NULL);
if (separator == NULL)
separator = "";
if (*str_array)
{
guint i, len;
guint separator_len;
separator_len = strlen (separator);
len = 1 + strlen (str_array[0]);
for(i = 1; str_array[i] != NULL; i++)
len += separator_len + strlen(str_array[i]);
string = g_new (gchar, len);
*string = 0;
strcat (string, *str_array);
for (i = 1; str_array[i] != NULL; i++)
{
strcat (string, separator);
strcat (string, str_array[i]);
}
}
else
string = g_strdup ("");
return string;
}
gchar*
g_strjoin (const gchar *separator,
...)
{
gchar *string, *s;
va_list args;
guint len;
guint separator_len;
if (separator == NULL)
separator = "";
separator_len = strlen (separator);
va_start (args, separator);
s = va_arg (args, gchar*);
if (s)
{
len = strlen (s);
s = va_arg (args, gchar*);
while (s)
{
len += separator_len + strlen (s);
s = va_arg (args, gchar*);
}
va_end (args);
string = g_new (gchar, len + 1);
*string = 0;
va_start (args, separator);
s = va_arg (args, gchar*);
strcat (string, s);
s = va_arg (args, gchar*);
while (s)
{
strcat (string, separator);
strcat (string, s);
s = va_arg (args, gchar*);
}
}
else
string = g_strdup ("");
va_end (args);
return string;
}
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