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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1998 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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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 1997-1999. 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 for the unix part, FIXME: make the win32 part MT safe as well.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "glibconfig.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef NATIVE_WIN32
# define STRICT /* Strict typing, please */
# include <windows.h>
# include <direct.h>
# include <errno.h>
# include <ctype.h>
# ifdef _MSC_VER
# include <io.h>
# endif /* _MSC_VER */
#endif /* NATIVE_WIN32 */
/* implement Glib's inline functions
*/
#define G_INLINE_FUNC extern
#define G_CAN_INLINE 1
#include "glib.h"
#ifdef MAXPATHLEN
#define G_PATH_LENGTH (MAXPATHLEN + 1)
#elif defined (PATH_MAX)
#define G_PATH_LENGTH (PATH_MAX + 1)
#else /* !MAXPATHLEN */
#define G_PATH_LENGTH (2048 + 1)
#endif /* !MAXPATHLEN && !PATH_MAX */
const guint glib_major_version = GLIB_MAJOR_VERSION;
const guint glib_minor_version = GLIB_MINOR_VERSION;
const guint glib_micro_version = GLIB_MICRO_VERSION;
const guint glib_interface_age = GLIB_INTERFACE_AGE;
const guint glib_binary_age = GLIB_BINARY_AGE;
#if defined (NATIVE_WIN32) && defined (__LCC__)
int __stdcall
LibMain (void *hinstDll,
unsigned long dwReason,
void *reserved)
{
return 1;
}
#endif /* NATIVE_WIN32 && __LCC__ */
void
g_atexit (GVoidFunc func)
{
gint result;
gchar *error = NULL;
/* keep this in sync with glib.h */
#ifdef G_NATIVE_ATEXIT
result = ATEXIT (func);
if (result)
error = g_strerror (errno);
#elif defined (HAVE_ATEXIT)
# ifdef NeXT /* @#%@! NeXTStep */
result = !atexit ((void (*)(void)) func);
if (result)
error = g_strerror (errno);
# else
result = atexit ((void (*)(void)) func);
if (result)
error = g_strerror (errno);
# endif /* NeXT */
#elif defined (HAVE_ON_EXIT)
result = on_exit ((void (*)(int, void *)) func, NULL);
if (result)
error = g_strerror (errno);
#else
result = 0;
error = "no implementation";
#endif /* G_NATIVE_ATEXIT */
if (error)
g_error ("Could not register atexit() function: %s", error);
}
gint
g_snprintf (gchar *str,
gulong n,
gchar const *fmt,
...)
{
#ifdef HAVE_VSNPRINTF
va_list args;
gint retval;
g_return_val_if_fail (str != NULL, 0);
g_return_val_if_fail (n > 0, 0);
g_return_val_if_fail (fmt != NULL, 0);
va_start (args, fmt);
retval = vsnprintf (str, n, fmt, args);
va_end (args);
if (retval < 0)
{
str[n-1] = '\0';
retval = strlen (str);
}
return retval;
#else /* !HAVE_VSNPRINTF */
gchar *printed;
va_list args;
g_return_val_if_fail (str != NULL, 0);
g_return_val_if_fail (n > 0, 0);
g_return_val_if_fail (fmt != NULL, 0);
va_start (args, fmt);
printed = g_strdup_vprintf (fmt, args);
va_end (args);
strncpy (str, printed, n);
str[n-1] = '\0';
g_free (printed);
return strlen (str);
#endif /* !HAVE_VSNPRINTF */
}
gint
g_vsnprintf (gchar *str,
gulong n,
gchar const *fmt,
va_list args)
{
#ifdef HAVE_VSNPRINTF
gint retval;
g_return_val_if_fail (str != NULL, 0);
g_return_val_if_fail (n > 0, 0);
g_return_val_if_fail (fmt != NULL, 0);
retval = vsnprintf (str, n, fmt, args);
if (retval < 0)
{
str[n-1] = '\0';
retval = strlen (str);
}
return retval;
#else /* !HAVE_VSNPRINTF */
gchar *printed;
g_return_val_if_fail (str != NULL, 0);
g_return_val_if_fail (n > 0, 0);
g_return_val_if_fail (fmt != NULL, 0);
printed = g_strdup_vprintf (fmt, args);
strncpy (str, printed, n);
str[n-1] = '\0';
g_free (printed);
return strlen (str);
#endif /* !HAVE_VSNPRINTF */
}
guint
g_parse_debug_string (const gchar *string,
GDebugKey *keys,
guint nkeys)
{
guint i;
guint result = 0;
g_return_val_if_fail (string != NULL, 0);
if (!g_strcasecmp (string, "all"))
{
for (i=0; i<nkeys; i++)
result |= keys[i].value;
}
else
{
gchar *str = g_strdup (string);
gchar *p = str;
gchar *q;
gboolean done = FALSE;
while (*p && !done)
{
q = strchr (p, ':');
if (!q)
{
q = p + strlen(p);
done = TRUE;
}
*q = 0;
for (i=0; i<nkeys; i++)
if (!g_strcasecmp(keys[i].key, p))
result |= keys[i].value;
p = q+1;
}
g_free (str);
}
return result;
}
gchar*
g_basename (const gchar *file_name)
{
register gchar *base;
g_return_val_if_fail (file_name != NULL, NULL);
base = strrchr (file_name, G_DIR_SEPARATOR);
if (base)
return base + 1;
#ifdef NATIVE_WIN32
if (isalpha (file_name[0]) && file_name[1] == ':')
return (gchar*) file_name + 2;
#endif /* NATIVE_WIN32 */
return (gchar*) file_name;
}
gboolean
g_path_is_absolute (const gchar *file_name)
{
g_return_val_if_fail (file_name != NULL, FALSE);
if (file_name[0] == G_DIR_SEPARATOR)
return TRUE;
#ifdef NATIVE_WIN32
if (isalpha (file_name[0]) && file_name[1] == ':' && file_name[2] == G_DIR_SEPARATOR)
return TRUE;
#endif
return FALSE;
}
gchar*
g_path_skip_root (gchar *file_name)
{
g_return_val_if_fail (file_name != NULL, NULL);
if (file_name[0] == G_DIR_SEPARATOR)
return file_name + 1;
#ifdef NATIVE_WIN32
if (isalpha (file_name[0]) && file_name[1] == ':' && file_name[2] == G_DIR_SEPARATOR)
return file_name + 3;
#endif
return NULL;
}
gchar*
g_dirname (const gchar *file_name)
{
register gchar *base;
register guint len;
g_return_val_if_fail (file_name != NULL, NULL);
base = strrchr (file_name, G_DIR_SEPARATOR);
if (!base)
return g_strdup (".");
while (base > file_name && *base == G_DIR_SEPARATOR)
base--;
len = (guint) 1 + base - file_name;
base = g_new (gchar, len + 1);
g_memmove (base, file_name, len);
base[len] = 0;
return base;
}
gchar*
g_get_current_dir (void)
{
gchar *buffer;
gchar *dir;
buffer = g_new (gchar, G_PATH_LENGTH);
*buffer = 0;
/* We don't use getcwd(3) on SUNOS, because, it does a popen("pwd")
* and, if that wasn't bad enough, hangs in doing so.
*/
#if defined (sun) && !defined (__SVR4)
dir = getwd (buffer);
#else /* !sun */
dir = getcwd (buffer, G_PATH_LENGTH - 1);
#endif /* !sun */
if (!dir || !*buffer)
{
/* hm, should we g_error() out here?
* this can happen if e.g. "./" has mode \0000
*/
buffer[0] = G_DIR_SEPARATOR;
buffer[1] = 0;
}
dir = g_strdup (buffer);
g_free (buffer);
return dir;
}
gchar*
g_getenv (const gchar *variable)
{
#ifndef NATIVE_WIN32
g_return_val_if_fail (variable != NULL, NULL);
return getenv (variable);
#else
gchar *v;
guint k;
static gchar *p = NULL;
static gint l;
gchar dummy[2];
g_return_val_if_fail (variable != NULL, NULL);
v = getenv (variable);
if (!v)
return NULL;
/* On Windows NT, it is relatively typical that environment variables
* contain references to other environment variables. Handle that by
* calling ExpandEnvironmentStrings.
*/
/* First check how much space we need */
k = ExpandEnvironmentStrings (v, dummy, 2);
/* Then allocate that much, and actualy do the expansion */
if (p == NULL)
{
p = g_malloc (k);
l = k;
}
else if (k > l)
{
p = g_realloc (p, k);
l = k;
}
ExpandEnvironmentStrings (v, p, k);
return p;
#endif
}
G_LOCK_DEFINE_STATIC (g_utils_global);
static gchar *g_tmp_dir = NULL;
static gchar *g_user_name = NULL;
static gchar *g_real_name = NULL;
static gchar *g_home_dir = NULL;
/* HOLDS: g_utils_global_lock */
static void
g_get_any_init (void)
{
if (!g_tmp_dir)
{
g_tmp_dir = g_strdup (g_getenv ("TMPDIR"));
if (!g_tmp_dir)
g_tmp_dir = g_strdup (g_getenv ("TMP"));
if (!g_tmp_dir)
g_tmp_dir = g_strdup (g_getenv ("TEMP"));
#ifdef P_tmpdir
if (!g_tmp_dir)
{
int k;
g_tmp_dir = g_strdup (P_tmpdir);
k = strlen (g_tmp_dir);
if (g_tmp_dir[k-1] == G_DIR_SEPARATOR)
g_tmp_dir[k-1] = '\0';
}
#endif
if (!g_tmp_dir)
{
#ifndef NATIVE_WIN32
g_tmp_dir = g_strdup ("/tmp");
#else /* NATIVE_WIN32 */
g_tmp_dir = g_strdup ("C:\\");
#endif /* NATIVE_WIN32 */
}
if (!g_home_dir)
g_home_dir = g_strdup (g_getenv ("HOME"));
#ifdef NATIVE_WIN32
if (!g_home_dir)
{
/* The official way to specify a home directory on NT is
* the HOMEDRIVE and HOMEPATH environment variables.
*
* This is inside #ifdef NATIVE_WIN32 because with the cygwin dll,
* HOME should be a POSIX style pathname.
*/
if (getenv ("HOMEDRIVE") != NULL && getenv ("HOMEPATH") != NULL)
{
gchar *homedrive, *homepath;
homedrive = g_strdup (g_getenv ("HOMEDRIVE"));
homepath = g_strdup (g_getenv ("HOMEPATH"));
g_home_dir = g_strconcat (homedrive, homepath, NULL);
g_free (homedrive);
g_free (homepath);
}
}
#endif /* !NATIVE_WIN32 */
#ifdef HAVE_PWD_H
{
struct passwd *pw = NULL;
gpointer buffer = NULL;
# ifdef HAVE_GETPWUID_R
struct passwd pwd;
# ifdef _SC_GETPW_R_SIZE_MAX
/* This reurns the maximum length */
guint bufsize = sysconf (_SC_GETPW_R_SIZE_MAX);
# else /* _SC_GETPW_R_SIZE_MAX */
guint bufsize = 64;
# endif /* _SC_GETPW_R_SIZE_MAX */
gint error;
do
{
g_free (buffer);
buffer = g_malloc (bufsize);
errno = 0;
# ifdef HAVE_GETPWUID_R_POSIX
error = getpwuid_r (getuid (), &pwd, buffer, bufsize, &pw);
error = error < 0 ? errno : error;
# else /* !HAVE_GETPWUID_R_POSIX */
# ifdef _AIX
error = getpwuid_r (getuid (), &pwd, buffer, bufsize);
pw = error == 0 ? &pwd : NULL;
# else /* !_AIX */
pw = getpwuid_r (getuid (), &pwd, buffer, bufsize);
error = pw ? 0 : errno;
# endif /* !_AIX */
# endif /* !HAVE_GETPWUID_R_POSIX */
if (!pw)
{
/* we bail out prematurely if the user id can't be found
* (should be pretty rare case actually), or if the buffer
* should be sufficiently big and lookups are still not
* successfull.
*/
if (error == 0 || error == ENOENT)
{
g_warning ("getpwuid_r(): failed due to: No such user %d.",
getuid ());
break;
}
if (bufsize > 32 * 1024)
{
g_warning ("getpwuid_r(): failed due to: %s.",
g_strerror (error));
break;
}
bufsize *= 2;
}
}
while (!pw);
# endif /* !HAVE_GETPWUID_R */
if (!pw)
{
setpwent ();
pw = getpwuid (getuid ());
endpwent ();
}
if (pw)
{
g_user_name = g_strdup (pw->pw_name);
g_real_name = g_strdup (pw->pw_gecos);
if (!g_home_dir)
g_home_dir = g_strdup (pw->pw_dir);
}
g_free (buffer);
}
#else /* !HAVE_PWD_H */
# ifdef NATIVE_WIN32
{
guint len = 17;
gchar buffer[17];
if (GetUserName (buffer, &len))
{
g_user_name = g_strdup (buffer);
g_real_name = g_strdup (buffer);
}
}
# endif /* NATIVE_WIN32 */
#endif /* !HAVE_PWD_H */
if (!g_user_name)
g_user_name = g_strdup ("somebody");
if (!g_real_name)
g_real_name = g_strdup ("Unknown");
else
{
gchar *p;
for (p = g_real_name; *p; p++)
if (*p == ',')
{
*p = 0;
p = g_strdup (g_real_name);
g_free (g_real_name);
g_real_name = p;
break;
}
}
}
}
gchar*
g_get_user_name (void)
{
G_LOCK (g_utils_global);
if (!g_tmp_dir)
g_get_any_init ();
G_UNLOCK (g_utils_global);
return g_user_name;
}
gchar*
g_get_real_name (void)
{
G_LOCK (g_utils_global);
if (!g_tmp_dir)
g_get_any_init ();
G_UNLOCK (g_utils_global);
return g_real_name;
}
/* Return the home directory of the user. If there is a HOME
* environment variable, its value is returned, otherwise use some
* system-dependent way of finding it out. If no home directory can be
* deduced, return NULL.
*/
gchar*
g_get_home_dir (void)
{
G_LOCK (g_utils_global);
if (!g_tmp_dir)
g_get_any_init ();
G_UNLOCK (g_utils_global);
return g_home_dir;
}
/* Return a directory to be used to store temporary files. This is the
* value of the TMPDIR, TMP or TEMP environment variables (they are
* checked in that order). If none of those exist, use P_tmpdir from
* stdio.h. If that isn't defined, return "/tmp" on POSIXly systems,
* and C:\ on Windows.
*/
gchar*
g_get_tmp_dir (void)
{
G_LOCK (g_utils_global);
if (!g_tmp_dir)
g_get_any_init ();
G_UNLOCK (g_utils_global);
return g_tmp_dir;
}
static gchar *g_prgname = NULL;
gchar*
g_get_prgname (void)
{
gchar* retval;
G_LOCK (g_utils_global);
retval = g_prgname;
G_UNLOCK (g_utils_global);
return retval;
}
void
g_set_prgname (const gchar *prgname)
{
gchar *c;
G_LOCK (g_utils_global);
c = g_prgname;
g_prgname = g_strdup (prgname);
g_free (c);
G_UNLOCK (g_utils_global);
}
guint
g_direct_hash (gconstpointer v)
{
return GPOINTER_TO_UINT (v);
}
gint
g_direct_equal (gconstpointer v1,
gconstpointer v2)
{
return v1 == v2;
}
gint
g_int_equal (gconstpointer v1,
gconstpointer v2)
{
return *((const gint*) v1) == *((const gint*) v2);
}
guint
g_int_hash (gconstpointer v)
{
return *(const gint*) v;
}
#if 0 /* Old IO Channels */
GIOChannel*
g_iochannel_new (gint fd)
{
GIOChannel *channel = g_new (GIOChannel, 1);
channel->fd = fd;
#ifdef NATIVE_WIN32
channel->peer = 0;
channel->peer_fd = 0;
channel->offset = 0;
channel->need_wakeups = 0;
#endif /* NATIVE_WIN32 */
return channel;
}
void
g_iochannel_free (GIOChannel *channel)
{
g_return_if_fail (channel != NULL);
g_free (channel);
}
void
g_iochannel_close_and_free (GIOChannel *channel)
{
g_return_if_fail (channel != NULL);
close (channel->fd);
g_iochannel_free (channel);
}
#undef g_iochannel_wakeup_peer
void
g_iochannel_wakeup_peer (GIOChannel *channel)
{
#ifdef NATIVE_WIN32
static guint message = 0;
#endif
g_return_if_fail (channel != NULL);
#ifdef NATIVE_WIN32
if (message == 0)
message = RegisterWindowMessage ("gdk-pipe-readable");
# if 0
g_print ("g_iochannel_wakeup_peer: calling PostThreadMessage (%#x, %d, %d, %d)\n",
channel->peer, message, channel->peer_fd, channel->offset);
# endif
PostThreadMessage (channel->peer, message,
channel->peer_fd, channel->offset);
#endif /* NATIVE_WIN32 */
}
#endif /* Old IO Channels */
#ifdef NATIVE_WIN32
#ifdef _MSC_VER
int
gwin_ftruncate (gint fd,
guint size)
{
HANDLE hfile;
guint curpos;
g_return_val_if_fail (fd >= 0, -1);
hfile = (HANDLE) _get_osfhandle (fd);
curpos = SetFilePointer (hfile, 0, NULL, FILE_CURRENT);
if (curpos == 0xFFFFFFFF
|| SetFilePointer (hfile, size, NULL, FILE_BEGIN) == 0xFFFFFFFF
|| !SetEndOfFile (hfile))
{
gint error = GetLastError ();
switch (error)
{
case ERROR_INVALID_HANDLE:
errno = EBADF;
break;
default:
errno = EIO;
break;
}
return -1;
}
return 0;
}
DIR*
gwin_opendir (const char *dirname)
{
DIR *result;
gchar *mask;
guint k;
g_return_val_if_fail (dirname != NULL, NULL);
result = g_new0 (DIR, 1);
result->find_file_data = g_new0 (WIN32_FIND_DATA, 1);
result->dir_name = g_strdup (dirname);
k = strlen (result->dir_name);
if (k && result->dir_name[k - 1] == '\\')
{
result->dir_name[k - 1] = '\0';
k--;
}
mask = g_strdup_printf ("%s\\*", result->dir_name);
result->find_file_handle = (guint) FindFirstFile (mask,
(LPWIN32_FIND_DATA) result->find_file_data);
g_free (mask);
if (result->find_file_handle == (guint) INVALID_HANDLE_VALUE)
{
int error = GetLastError ();
g_free (result->dir_name);
g_free (result->find_file_data);
g_free (result);
switch (error)
{
default:
errno = EIO;
return NULL;
}
}
result->just_opened = TRUE;
return result;
}
struct dirent*
gwin_readdir (DIR *dir)
{
static struct dirent result;
g_return_val_if_fail (dir != NULL, NULL);
if (dir->just_opened)
dir->just_opened = FALSE;
else
{
if (!FindNextFile ((HANDLE) dir->find_file_handle,
(LPWIN32_FIND_DATA) dir->find_file_data))
{
int error = GetLastError ();
switch (error)
{
case ERROR_NO_MORE_FILES:
return NULL;
default:
errno = EIO;
return NULL;
}
}
}
strcpy (result.d_name, g_basename (((LPWIN32_FIND_DATA) dir->find_file_data)->cFileName));
return &result;
}
void
gwin_rewinddir (DIR *dir)
{
gchar *mask;
g_return_if_fail (dir != NULL);
if (!FindClose ((HANDLE) dir->find_file_handle))
g_warning ("gwin_rewinddir(): FindClose() failed\n");
mask = g_strdup_printf ("%s\\*", dir->dir_name);
dir->find_file_handle = (guint) FindFirstFile (mask,
(LPWIN32_FIND_DATA) dir->find_file_data);
g_free (mask);
if (dir->find_file_handle == (guint) INVALID_HANDLE_VALUE)
{
int error = GetLastError ();
switch (error)
{
default:
errno = EIO;
return;
}
}
dir->just_opened = TRUE;
}
gint
gwin_closedir (DIR *dir)
{
g_return_val_if_fail (dir != NULL, -1);
if (!FindClose ((HANDLE) dir->find_file_handle))
{
int error = GetLastError ();
switch (error)
{
default:
errno = EIO; return -1;
}
}
g_free (dir->dir_name);
g_free (dir->find_file_data);
g_free (dir);
return 0;
}
#endif /* _MSC_VER */
#endif /* NATIVE_WIN32 */
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