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/*
* File utility functions.
*
* Author:
* Gonzalo Paniagua Javier (gonzalo@novell.com)
*
* (C) 2006 Novell, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <config.h>
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef _MSC_VER
#include <direct.h>
int mkstemp (char *tmp_template);
#endif
#ifndef O_LARGEFILE
#define OPEN_FLAGS (O_RDONLY)
#else
#define OPEN_FLAGS (O_RDONLY | O_LARGEFILE)
#endif
gboolean
g_file_get_contents (const gchar *filename, gchar **contents, gsize *length, GError **error)
{
gchar *str;
int fd;
struct stat st;
long offset;
int nread;
g_return_val_if_fail (filename != NULL, FALSE);
g_return_val_if_fail (contents != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
*contents = NULL;
if (length)
*length = 0;
fd = open (filename, OPEN_FLAGS);
if (fd == -1) {
if (error != NULL) {
int err = errno;
*error = g_error_new (G_LOG_DOMAIN, g_file_error_from_errno (err), "Error opening file");
}
return FALSE;
}
if (fstat (fd, &st) != 0) {
if (error != NULL) {
int err = errno;
*error = g_error_new (G_LOG_DOMAIN, g_file_error_from_errno (err), "Error in fstat()");
}
close (fd);
return FALSE;
}
str = g_malloc (st.st_size + 1);
offset = 0;
do {
nread = read (fd, str + offset, st.st_size - offset);
if (nread > 0) {
offset += nread;
}
} while ((nread > 0 && offset < st.st_size) || (nread == -1 && errno == EINTR));
close (fd);
str [st.st_size] = '\0';
if (length) {
*length = st.st_size;
}
*contents = str;
return TRUE;
}
gint
g_file_open_tmp (const gchar *tmpl, gchar **name_used, GError **error)
{
const static gchar *default_tmpl = ".XXXXXX";
gchar *t;
gint fd;
size_t len;
g_return_val_if_fail (error == NULL || *error == NULL, -1);
if (tmpl == NULL)
tmpl = default_tmpl;
if (strchr (tmpl, G_DIR_SEPARATOR) != NULL) {
if (error) {
*error = g_error_new (G_LOG_DOMAIN, 24, "Template should not have any " G_DIR_SEPARATOR_S);
}
return -1;
}
len = strlen (tmpl);
if (len < 6 || strcmp (tmpl + len - 6, "XXXXXX")) {
if (error) {
*error = g_error_new (G_LOG_DOMAIN, 24, "Template should end with XXXXXX");
}
return -1;
}
t = g_build_filename (g_get_tmp_dir (), tmpl, NULL);
fd = mkstemp (t);
if (fd == -1) {
if (error) {
int err = errno;
*error = g_error_new (G_LOG_DOMAIN, g_file_error_from_errno (err), "Error in mkstemp()");
}
g_free (t);
return -1;
}
if (name_used) {
*name_used = t;
} else {
g_free (t);
}
return fd;
}
gchar *
g_get_current_dir (void)
{
int s = 32;
char *buffer = NULL, *r;
gboolean fail;
do {
buffer = g_realloc (buffer, s);
r = getcwd (buffer, s);
fail = (r == NULL && errno == ERANGE);
if (fail) {
s <<= 1;
}
} while (fail);
/* On amd64 sometimes the bottom 32-bits of r == the bottom 32-bits of buffer
* but the top 32-bits of r have overflown to 0xffffffff (seriously wtf getcwd
* so we return the buffer here since it has a pointer to the valid string
*/
return buffer;
}
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