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gtk2/gtk/updateiconcache.c
Chun-wei Fan da651ca7fc update-icon-cache.c: Declare variables at top-of-block 
This way, things will continue to build on older compilers
2021-04-16 15:36:58 +08:00

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/* updateiconcache.c
* Copyright (C) 2004 Anders Carlsson <andersca@gnome.org>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <locale.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <errno.h>
#ifdef _MSC_VER
#include <io.h>
#include <sys/utime.h>
#else
#include <utime.h>
#endif
#include <glib.h>
#include <glib/gstdio.h>
#include <gdk-pixbuf/gdk-pixdata.h>
#include <glib/gi18n.h>
#include "gtkiconcachevalidator.h"
static gboolean force_update = FALSE;
static gboolean ignore_theme_index = FALSE;
static gboolean quiet = FALSE;
static gboolean index_only = TRUE;
static gboolean validate = FALSE;
static gchar *var_name = "-";
/* Quite ugly - if we just add the c file to the
* list of sources in Makefile.am, libtool complains.
*/
#include "gtkiconcachevalidator.c"
#define CACHE_NAME "icon-theme.cache"
#define HAS_SUFFIX_XPM (1 << 0)
#define HAS_SUFFIX_SVG (1 << 1)
#define HAS_SUFFIX_PNG (1 << 2)
#define HAS_ICON_FILE (1 << 3)
#define MAJOR_VERSION 1
#define MINOR_VERSION 0
#define HASH_OFFSET 12
#define ALIGN_VALUE(this, boundary) \
(( ((unsigned long)(this)) + (((unsigned long)(boundary)) -1)) & (~(((unsigned long)(boundary))-1)))
#ifdef HAVE_FTW_H
#include <ftw.h>
static GStatBuf cache_dir_stat;
static gboolean cache_up_to_date;
static int check_dir_mtime (const char *dir,
const GStatBuf *sb,
int tf)
{
if (tf != FTW_NS && sb->st_mtime > cache_dir_stat.st_mtime)
{
cache_up_to_date = FALSE;
/* stop tree walk */
return 1;
}
return 0;
}
static gboolean
is_cache_up_to_date (const gchar *path)
{
gchar *cache_path;
gint retval;
cache_path = g_build_filename (path, CACHE_NAME, NULL);
retval = g_stat (cache_path, &cache_dir_stat);
g_free (cache_path);
if (retval < 0)
{
/* Cache file not found */
return FALSE;
}
cache_up_to_date = TRUE;
ftw (path, check_dir_mtime, 20);
return cache_up_to_date;
}
#else /* !HAVE_FTW_H */
gboolean
is_cache_up_to_date (const gchar *path)
{
GStatBuf path_stat, cache_stat;
gchar *cache_path;
int retval;
retval = g_stat (path, &path_stat);
if (retval < 0)
{
/* We can't stat the path,
* assume we have a updated cache */
return TRUE;
}
cache_path = g_build_filename (path, CACHE_NAME, NULL);
retval = g_stat (cache_path, &cache_stat);
g_free (cache_path);
if (retval < 0)
{
/* Cache file not found */
return FALSE;
}
/* Check mtime */
return cache_stat.st_mtime >= path_stat.st_mtime;
}
#endif /* !HAVE_FTW_H */
static gboolean
has_theme_index (const gchar *path)
{
gboolean result;
gchar *index_path;
index_path = g_build_filename (path, "index.theme", NULL);
result = g_file_test (index_path, G_FILE_TEST_IS_REGULAR);
g_free (index_path);
return result;
}
typedef struct
{
GdkPixdata pixdata;
gboolean has_pixdata;
guint32 offset;
guint size;
} ImageData;
typedef struct
{
int has_embedded_rect;
int x0, y0, x1, y1;
int n_attach_points;
int *attach_points;
int n_display_names;
char **display_names;
guint32 offset;
gint size;
} IconData;
static GHashTable *image_data_hash = NULL;
static GHashTable *icon_data_hash = NULL;
typedef struct
{
int flags;
int dir_index;
ImageData *image_data;
guint pixel_data_size;
IconData *icon_data;
guint icon_data_size;
} Image;
static gboolean
foreach_remove_func (gpointer key, gpointer value, gpointer user_data)
{
Image *image = (Image *)value;
GHashTable *files = user_data;
GList *list;
gboolean free_key = FALSE;
if (image->flags == HAS_ICON_FILE)
{
/* just a .icon file, throw away */
g_free (key);
g_free (image);
return TRUE;
}
list = g_hash_table_lookup (files, key);
if (list)
free_key = TRUE;
list = g_list_prepend (list, value);
g_hash_table_insert (files, key, list);
if (free_key)
g_free (key);
return TRUE;
}
static IconData *
load_icon_data (const char *path)
{
GKeyFile *icon_file;
char **split;
gsize length;
char *str;
char *split_point;
int i;
gint *ivalues;
GError *error = NULL;
gchar **keys;
gsize n_keys;
IconData *data;
icon_file = g_key_file_new ();
g_key_file_set_list_separator (icon_file, ',');
g_key_file_load_from_file (icon_file, path, G_KEY_FILE_KEEP_TRANSLATIONS, &error);
if (error)
{
g_error_free (error);
g_key_file_free (icon_file);
return NULL;
}
data = g_new0 (IconData, 1);
ivalues = g_key_file_get_integer_list (icon_file,
"Icon Data", "EmbeddedTextRectangle",
&length, NULL);
if (ivalues)
{
if (length == 4)
{
data->has_embedded_rect = TRUE;
data->x0 = ivalues[0];
data->y0 = ivalues[1];
data->x1 = ivalues[2];
data->y1 = ivalues[3];
}
g_free (ivalues);
}
str = g_key_file_get_string (icon_file, "Icon Data", "AttachPoints", NULL);
if (str)
{
split = g_strsplit (str, "|", -1);
data->n_attach_points = g_strv_length (split);
data->attach_points = g_new (int, 2 * data->n_attach_points);
for (i = 0; i < data->n_attach_points; ++i)
{
split_point = strchr (split[i], ',');
if (split_point)
{
*split_point = 0;
split_point++;
data->attach_points[2 * i] = atoi (split[i]);
data->attach_points[2 * i + 1] = atoi (split_point);
}
}
g_strfreev (split);
g_free (str);
}
keys = g_key_file_get_keys (icon_file, "Icon Data", &n_keys, &error);
data->display_names = g_new0 (gchar *, 2 * n_keys + 1);
data->n_display_names = 0;
for (i = 0; i < n_keys; i++)
{
gchar *lang, *name;
if (g_str_has_prefix (keys[i], "DisplayName"))
{
gchar *open, *close = NULL;
open = strchr (keys[i], '[');
if (open)
close = strchr (open, ']');
if (open && close)
{
lang = g_strndup (open + 1, close - open - 1);
name = g_key_file_get_locale_string (icon_file,
"Icon Data", "DisplayName",
lang, NULL);
}
else
{
lang = g_strdup ("C");
name = g_key_file_get_string (icon_file,
"Icon Data", "DisplayName",
NULL);
}
data->display_names[2 * data->n_display_names] = lang;
data->display_names[2 * data->n_display_names + 1] = name;
data->n_display_names++;
}
}
g_strfreev (keys);
g_key_file_free (icon_file);
/* -1 means not computed yet, the real value depends
* on string pool state, and will be computed
* later
*/
data->size = -1;
return data;
}
/*
* This function was copied from gtkfilesystemunix.c, it should
* probably go to GLib
*/
static void
canonicalize_filename (gchar *filename)
{
gchar *p, *q;
gboolean last_was_slash = FALSE;
p = filename;
q = filename;
while (*p)
{
if (*p == G_DIR_SEPARATOR)
{
if (!last_was_slash)
*q++ = G_DIR_SEPARATOR;
last_was_slash = TRUE;
}
else
{
if (last_was_slash && *p == '.')
{
if (*(p + 1) == G_DIR_SEPARATOR ||
*(p + 1) == '\0')
{
if (*(p + 1) == '\0')
break;
p += 1;
}
else if (*(p + 1) == '.' &&
(*(p + 2) == G_DIR_SEPARATOR ||
*(p + 2) == '\0'))
{
if (q > filename + 1)
{
q--;
while (q > filename + 1 &&
*(q - 1) != G_DIR_SEPARATOR)
q--;
}
if (*(p + 2) == '\0')
break;
p += 2;
}
else
{
*q++ = *p;
last_was_slash = FALSE;
}
}
else
{
*q++ = *p;
last_was_slash = FALSE;
}
}
p++;
}
if (q > filename + 1 && *(q - 1) == G_DIR_SEPARATOR)
q--;
*q = '\0';
}
static gchar *
follow_links (const gchar *path)
{
gchar *target;
gchar *d, *s;
gchar *path2 = NULL;
path2 = g_strdup (path);
while (g_file_test (path2, G_FILE_TEST_IS_SYMLINK))
{
target = g_file_read_link (path2, NULL);
if (target)
{
if (g_path_is_absolute (target))
path2 = target;
else
{
d = g_path_get_dirname (path2);
s = g_build_filename (d, target, NULL);
g_free (d);
g_free (target);
g_free (path2);
path2 = s;
}
}
else
break;
}
if (strcmp (path, path2) == 0)
{
g_free (path2);
path2 = NULL;
}
return path2;
}
static void
maybe_cache_image_data (Image *image,
const gchar *path)
{
if (!index_only && !image->image_data &&
(g_str_has_suffix (path, ".png") || g_str_has_suffix (path, ".xpm")))
{
GdkPixbuf *pixbuf;
ImageData *idata;
gchar *path2;
idata = g_hash_table_lookup (image_data_hash, path);
path2 = follow_links (path);
if (path2)
{
ImageData *idata2;
canonicalize_filename (path2);
idata2 = g_hash_table_lookup (image_data_hash, path2);
if (idata && idata2 && idata != idata2)
g_error ("different idatas found for symlinked '%s' and '%s'\n",
path, path2);
if (idata && !idata2)
g_hash_table_insert (image_data_hash, g_strdup (path2), idata);
if (!idata && idata2)
{
g_hash_table_insert (image_data_hash, g_strdup (path), idata2);
idata = idata2;
}
}
if (!idata)
{
idata = g_new0 (ImageData, 1);
g_hash_table_insert (image_data_hash, g_strdup (path), idata);
if (path2)
g_hash_table_insert (image_data_hash, g_strdup (path2), idata);
}
if (!idata->has_pixdata)
{
pixbuf = gdk_pixbuf_new_from_file (path, NULL);
if (pixbuf)
{
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
gdk_pixdata_from_pixbuf (&idata->pixdata, pixbuf, FALSE);
G_GNUC_END_IGNORE_DEPRECATIONS;
idata->size = idata->pixdata.length + 8;
idata->has_pixdata = TRUE;
}
}
image->image_data = idata;
g_free (path2);
}
}
static void
maybe_cache_icon_data (Image *image,
const gchar *path)
{
if (g_str_has_suffix (path, ".icon"))
{
IconData *idata = NULL;
gchar *path2 = NULL;
idata = g_hash_table_lookup (icon_data_hash, path);
path2 = follow_links (path);
if (path2)
{
IconData *idata2;
canonicalize_filename (path2);
idata2 = g_hash_table_lookup (icon_data_hash, path2);
if (idata && idata2 && idata != idata2)
g_error ("different idatas found for symlinked '%s' and '%s'\n",
path, path2);
if (idata && !idata2)
g_hash_table_insert (icon_data_hash, g_strdup (path2), idata);
if (!idata && idata2)
{
g_hash_table_insert (icon_data_hash, g_strdup (path), idata2);
idata = idata2;
}
}
if (!idata)
{
idata = load_icon_data (path);
g_hash_table_insert (icon_data_hash, g_strdup (path), idata);
if (path2)
g_hash_table_insert (icon_data_hash, g_strdup (path2), idata);
}
image->icon_data = idata;
g_free (path2);
}
}
/*
* Finds all dir separators and replaces them with “/”.
* This makes sure that only /-separated paths are written in cache files,
* maintaining compatibility with theme index files that use slashes as
* directory separators on all platforms.
*/
static void
replace_backslashes_with_slashes (gchar *path)
{
size_t i;
if (path == NULL)
return;
for (i = 0; path[i]; i++)
if (G_IS_DIR_SEPARATOR (path[i]))
path[i] = '/';
}
static GList *
scan_directory (const gchar *base_path,
const gchar *subdir,
GHashTable *files,
GList *directories,
gint depth)
{
GHashTable *dir_hash;
GDir *dir;
GList *list = NULL, *iterator = NULL;
const gchar *name;
gchar *dir_path;
gboolean dir_added = FALSE;
guint dir_index = 0xffff;
dir_path = g_build_path ("/", base_path, subdir, NULL);
/* FIXME: Use the gerror */
dir = g_dir_open (dir_path, 0, NULL);
if (!dir)
return directories;
dir_hash = g_hash_table_new (g_str_hash, g_str_equal);
while ((name = g_dir_read_name (dir)))
{
list = g_list_prepend (list, g_strdup (name));
}
list = g_list_sort (list, (GCompareFunc) strcmp);
for (iterator = list; iterator; iterator = iterator->next)
{
gchar *path;
gboolean retval;
int flags = 0;
Image *image;
gchar *basename, *dot;
name = iterator->data;
path = g_build_filename (dir_path, name, NULL);
retval = g_file_test (path, G_FILE_TEST_IS_DIR);
if (retval)
{
gchar *subsubdir;
if (subdir)
subsubdir = g_build_path ("/", subdir, name, NULL);
else
subsubdir = g_strdup (name);
directories = scan_directory (base_path, subsubdir, files,
directories, depth + 1);
g_free (subsubdir);
continue;
}
/* ignore images in the toplevel directory */
if (subdir == NULL)
continue;
retval = g_file_test (path, G_FILE_TEST_IS_REGULAR);
if (retval)
{
if (g_str_has_suffix (name, ".png"))
flags |= HAS_SUFFIX_PNG;
else if (g_str_has_suffix (name, ".svg"))
flags |= HAS_SUFFIX_SVG;
else if (g_str_has_suffix (name, ".xpm"))
flags |= HAS_SUFFIX_XPM;
else if (g_str_has_suffix (name, ".icon"))
flags |= HAS_ICON_FILE;
if (flags == 0)
continue;
basename = g_strdup (name);
dot = strrchr (basename, '.');
*dot = '\0';
image = g_hash_table_lookup (dir_hash, basename);
if (!image)
{
if (!dir_added)
{
dir_added = TRUE;
if (subdir)
{
dir_index = g_list_length (directories);
directories = g_list_append (directories, g_strdup (subdir));
}
else
dir_index = 0xffff;
}
image = g_new0 (Image, 1);
image->dir_index = dir_index;
g_hash_table_insert (dir_hash, g_strdup (basename), image);
}
image->flags |= flags;
maybe_cache_image_data (image, path);
maybe_cache_icon_data (image, path);
g_free (basename);
}
g_free (path);
}
g_list_free_full (list, g_free);
g_dir_close (dir);
/* Move dir into the big file hash */
g_hash_table_foreach_remove (dir_hash, foreach_remove_func, files);
g_hash_table_destroy (dir_hash);
return directories;
}
typedef struct _HashNode HashNode;
struct _HashNode
{
HashNode *next;
gchar *name;
GList *image_list;
gint offset;
};
static guint
icon_name_hash (gconstpointer key)
{
const signed char *p = key;
guint32 h = *p;
if (h)
for (p += 1; *p != '\0'; p++)
h = (h << 5) - h + *p;
return h;
}
typedef struct {
gint size;
HashNode **nodes;
} HashContext;
static gboolean
convert_to_hash (gpointer key, gpointer value, gpointer user_data)
{
HashContext *context = user_data;
guint hash;
HashNode *node;
hash = icon_name_hash (key) % context->size;
node = g_new0 (HashNode, 1);
node->next = NULL;
node->name = key;
node->image_list = value;
if (context->nodes[hash] != NULL)
node->next = context->nodes[hash];
context->nodes[hash] = node;
return TRUE;
}
static GHashTable *string_pool = NULL;
static int
find_string (const gchar *n)
{
return GPOINTER_TO_INT (g_hash_table_lookup (string_pool, n));
}
static void
add_string (const gchar *n, int offset)
{
g_hash_table_insert (string_pool, (gpointer) n, GINT_TO_POINTER (offset));
}
static gboolean
write_string (FILE *cache, const gchar *n)
{
gchar *s;
int i, l;
l = ALIGN_VALUE (strlen (n) + 1, 4);
s = g_malloc0 (l);
strcpy (s, n);
i = fwrite (s, l, 1, cache);
g_free (s);
return i == 1;
}
static gboolean
write_card16 (FILE *cache, guint16 n)
{
int i;
n = GUINT16_TO_BE (n);
i = fwrite ((char *)&n, 2, 1, cache);
return i == 1;
}
static gboolean
write_card32 (FILE *cache, guint32 n)
{
int i;
n = GUINT32_TO_BE (n);
i = fwrite ((char *)&n, 4, 1, cache);
return i == 1;
}
static gboolean
write_image_data (FILE *cache, ImageData *image_data, int offset)
{
guint8 *s;
guint len;
gint i;
GdkPixdata *pixdata = &image_data->pixdata;
/* Type 0 is GdkPixdata */
if (!write_card32 (cache, 0))
return FALSE;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
s = gdk_pixdata_serialize (pixdata, &len);
G_GNUC_END_IGNORE_DEPRECATIONS;
if (!write_card32 (cache, len))
{
g_free (s);
return FALSE;
}
i = fwrite (s, len, 1, cache);
g_free (s);
return i == 1;
}
static gboolean
write_icon_data (FILE *cache, IconData *icon_data, int offset)
{
int ofs = offset + 12;
int j;
int tmp, tmp2;
if (icon_data->has_embedded_rect)
{
if (!write_card32 (cache, ofs))
return FALSE;
ofs += 8;
}
else
{
if (!write_card32 (cache, 0))
return FALSE;
}
if (icon_data->n_attach_points > 0)
{
if (!write_card32 (cache, ofs))
return FALSE;
ofs += 4 + 4 * icon_data->n_attach_points;
}
else
{
if (!write_card32 (cache, 0))
return FALSE;
}
if (icon_data->n_display_names > 0)
{
if (!write_card32 (cache, ofs))
return FALSE;
}
else
{
if (!write_card32 (cache, 0))
return FALSE;
}
if (icon_data->has_embedded_rect)
{
if (!write_card16 (cache, icon_data->x0) ||
!write_card16 (cache, icon_data->y0) ||
!write_card16 (cache, icon_data->x1) ||
!write_card16 (cache, icon_data->y1))
return FALSE;
}
if (icon_data->n_attach_points > 0)
{
if (!write_card32 (cache, icon_data->n_attach_points))
return FALSE;
for (j = 0; j < 2 * icon_data->n_attach_points; j++)
{
if (!write_card16 (cache, icon_data->attach_points[j]))
return FALSE;
}
}
if (icon_data->n_display_names > 0)
{
if (!write_card32 (cache, icon_data->n_display_names))
return FALSE;
ofs += 4 + 8 * icon_data->n_display_names;
tmp = ofs;
for (j = 0; j < 2 * icon_data->n_display_names; j++)
{
tmp2 = find_string (icon_data->display_names[j]);
if (tmp2 == 0 || tmp2 == -1)
{
tmp2 = tmp;
tmp += ALIGN_VALUE (strlen (icon_data->display_names[j]) + 1, 4);
/* We're playing a little game with negative
* offsets here to handle duplicate strings in
* the array.
*/
add_string (icon_data->display_names[j], -tmp2);
}
else if (tmp2 < 0)
{
tmp2 = -tmp2;
}
if (!write_card32 (cache, tmp2))
return FALSE;
}
g_assert (ofs == ftell (cache));
for (j = 0; j < 2 * icon_data->n_display_names; j++)
{
tmp2 = find_string (icon_data->display_names[j]);
g_assert (tmp2 != 0 && tmp2 != -1);
if (tmp2 < 0)
{
tmp2 = -tmp2;
g_assert (tmp2 == ftell (cache));
add_string (icon_data->display_names[j], tmp2);
if (!write_string (cache, icon_data->display_names[j]))
return FALSE;
}
}
}
return TRUE;
}
static gboolean
write_header (FILE *cache, guint32 dir_list_offset)
{
return (write_card16 (cache, MAJOR_VERSION) &&
write_card16 (cache, MINOR_VERSION) &&
write_card32 (cache, HASH_OFFSET) &&
write_card32 (cache, dir_list_offset));
}
static gint
get_image_meta_data_size (Image *image)
{
gint i;
/* The complication with storing the size in both
* IconData and Image is necessary since we attribute
* the size of the IconData only to the first Image
* using it (at which time it is written out in the
* cache). Later Images just refer to the written out
* IconData via the offset.
*/
if (image->icon_data_size == 0)
{
if (image->icon_data && image->icon_data->size < 0)
{
IconData *data = image->icon_data;
data->size = 0;
if (data->has_embedded_rect ||
data->n_attach_points > 0 ||
data->n_display_names > 0)
data->size += 12;
if (data->has_embedded_rect)
data->size += 8;
if (data->n_attach_points > 0)
data->size += 4 + data->n_attach_points * 4;
if (data->n_display_names > 0)
{
data->size += 4 + 8 * data->n_display_names;
for (i = 0; data->display_names[i]; i++)
{
int poolv;
if ((poolv = find_string (data->display_names[i])) == 0)
{
data->size += ALIGN_VALUE (strlen (data->display_names[i]) + 1, 4);
/* Adding the string to the pool with -1
* to indicate that it hasn't been written out
* to the cache yet. We still need it in the
* pool in case the same string occurs twice
* during a get_single_node_size() calculation.
*/
add_string (data->display_names[i], -1);
}
}
}
image->icon_data_size = data->size;
data->size = 0;
}
}
g_assert (image->icon_data_size % 4 == 0);
return image->icon_data_size;
}
static gint
get_image_pixel_data_size (Image *image)
{
/* The complication with storing the size in both
* ImageData and Image is necessary since we attribute
* the size of the ImageData only to the first Image
* using it (at which time it is written out in the
* cache). Later Images just refer to the written out
* ImageData via the offset.
*/
if (image->pixel_data_size == 0)
{
if (image->image_data &&
image->image_data->has_pixdata)
{
image->pixel_data_size = image->image_data->size;
image->image_data->size = 0;
}
}
g_assert (image->pixel_data_size % 4 == 0);
return image->pixel_data_size;
}
static gint
get_image_data_size (Image *image)
{
gint len;
len = 0;
len += get_image_pixel_data_size (image);
len += get_image_meta_data_size (image);
/* Even if len is zero, we need to reserve space to
* write the ImageData, unless this is an .svg without
* .icon, in which case both image_data and icon_data
* are NULL.
*/
if (len > 0 || image->image_data || image->icon_data)
len += 8;
return len;
}
static void
get_single_node_size (HashNode *node, int *node_size, int *image_data_size)
{
GList *list;
/* Node pointers */
*node_size = 12;
/* Name */
if (find_string (node->name) == 0)
{
*node_size += ALIGN_VALUE (strlen (node->name) + 1, 4);
add_string (node->name, -1);
}
/* Image list */
*node_size += 4 + g_list_length (node->image_list) * 8;
/* Image data */
*image_data_size = 0;
for (list = node->image_list; list; list = list->next)
{
Image *image = list->data;
*image_data_size += get_image_data_size (image);
}
}
static gboolean
write_bucket (FILE *cache, HashNode *node, int *offset)
{
while (node != NULL)
{
int node_size, image_data_size;
int next_offset, image_data_offset;
int data_offset;
int name_offset;
int name_size;
int image_list_offset;
int i, len;
GList *list;
g_assert (*offset == ftell (cache));
node->offset = *offset;
get_single_node_size (node, &node_size, &image_data_size);
g_assert (node_size % 4 == 0);
g_assert (image_data_size % 4 == 0);
image_data_offset = *offset + node_size;
next_offset = *offset + node_size + image_data_size;
/* Chain offset */
if (node->next != NULL)
{
if (!write_card32 (cache, next_offset))
return FALSE;
}
else
{
if (!write_card32 (cache, 0xffffffff))
return FALSE;
}
name_size = 0;
name_offset = find_string (node->name);
if (name_offset <= 0)
{
name_offset = *offset + 12;
name_size = ALIGN_VALUE (strlen (node->name) + 1, 4);
add_string (node->name, name_offset);
}
if (!write_card32 (cache, name_offset))
return FALSE;
image_list_offset = *offset + 12 + name_size;
if (!write_card32 (cache, image_list_offset))
return FALSE;
/* Icon name */
if (name_size > 0)
{
if (!write_string (cache, node->name))
return FALSE;
}
/* Image list */
len = g_list_length (node->image_list);
if (!write_card32 (cache, len))
return FALSE;
list = node->image_list;
data_offset = image_data_offset;
for (i = 0; i < len; i++)
{
Image *image = list->data;
int image_size = get_image_data_size (image);
/* Directory index */
if (!write_card16 (cache, image->dir_index))
return FALSE;
/* Flags */
if (!write_card16 (cache, image->flags))
return FALSE;
/* Image data offset */
if (image_size > 0)
{
if (!write_card32 (cache, data_offset))
return FALSE;
data_offset += image_size;
}
else
{
if (!write_card32 (cache, 0))
return FALSE;
}
list = list->next;
}
/* Now write the image data */
list = node->image_list;
for (i = 0; i < len; i++, list = list->next)
{
Image *image = list->data;
int pixel_data_size = get_image_pixel_data_size (image);
int meta_data_size = get_image_meta_data_size (image);
if (get_image_data_size (image) == 0)
continue;
/* Pixel data */
if (pixel_data_size > 0)
{
image->image_data->offset = image_data_offset + 8;
if (!write_card32 (cache, image->image_data->offset))
return FALSE;
}
else
{
if (!write_card32 (cache, (guint32) (image->image_data ? image->image_data->offset : 0)))
return FALSE;
}
if (meta_data_size > 0)
{
image->icon_data->offset = image_data_offset + pixel_data_size + 8;
if (!write_card32 (cache, image->icon_data->offset))
return FALSE;
}
else
{
if (!write_card32 (cache, image->icon_data ? image->icon_data->offset : 0))
return FALSE;
}
if (pixel_data_size > 0)
{
if (!write_image_data (cache, image->image_data, image->image_data->offset))
return FALSE;
}
if (meta_data_size > 0)
{
if (!write_icon_data (cache, image->icon_data, image->icon_data->offset))
return FALSE;
}
image_data_offset += pixel_data_size + meta_data_size + 8;
}
*offset = next_offset;
node = node->next;
}
return TRUE;
}
static gboolean
write_hash_table (FILE *cache, HashContext *context, int *new_offset)
{
int offset = HASH_OFFSET;
int node_offset;
int i;
if (!(write_card32 (cache, context->size)))
return FALSE;
offset += 4;
node_offset = offset + context->size * 4;
/* Just write zeros here, we will rewrite this later */
for (i = 0; i < context->size; i++)
{
if (!write_card32 (cache, 0))
return FALSE;
}
/* Now write the buckets */
for (i = 0; i < context->size; i++)
{
if (!context->nodes[i])
continue;
g_assert (node_offset % 4 == 0);
if (!write_bucket (cache, context->nodes[i], &node_offset))
return FALSE;
}
*new_offset = node_offset;
/* Now write out the bucket offsets */
fseek (cache, offset, SEEK_SET);
for (i = 0; i < context->size; i++)
{
if (context->nodes[i] != NULL)
node_offset = context->nodes[i]->offset;
else
node_offset = 0xffffffff;
if (!write_card32 (cache, node_offset))
return FALSE;
}
fseek (cache, 0, SEEK_END);
return TRUE;
}
static gboolean
write_dir_index (FILE *cache, int offset, GList *directories)
{
int n_dirs;
GList *d;
char *dir;
int tmp, tmp2;
n_dirs = g_list_length (directories);
if (!write_card32 (cache, n_dirs))
return FALSE;
offset += 4 + n_dirs * 4;
tmp = offset;
for (d = directories; d; d = d->next)
{
dir = d->data;
tmp2 = find_string (dir);
if (tmp2 == 0 || tmp2 == -1)
{
tmp2 = tmp;
tmp += ALIGN_VALUE (strlen (dir) + 1, 4);
/* We're playing a little game with negative
* offsets here to handle duplicate strings in
* the array, even though that should not
* really happen for the directory index.
*/
add_string (dir, -tmp2);
}
else if (tmp2 < 0)
{
tmp2 = -tmp2;
}
if (!write_card32 (cache, tmp2))
return FALSE;
}
g_assert (offset == ftell (cache));
for (d = directories; d; d = d->next)
{
dir = d->data;
tmp2 = find_string (dir);
g_assert (tmp2 != 0 && tmp2 != -1);
if (tmp2 < 0)
{
tmp2 = -tmp2;
g_assert (tmp2 == ftell (cache));
add_string (dir, tmp2);
if (!write_string (cache, dir))
return FALSE;
}
}
return TRUE;
}
static gboolean
write_file (FILE *cache, GHashTable *files, GList *directories)
{
HashContext context;
int new_offset;
/* Convert the hash table into something looking a bit more
* like what we want to write to disk.
*/
context.size = g_spaced_primes_closest (g_hash_table_size (files) / 3);
context.nodes = g_new0 (HashNode *, context.size);
g_hash_table_foreach_remove (files, convert_to_hash, &context);
/* Now write the file */
/* We write 0 as the directory list offset and go
* back and change it later */
if (!write_header (cache, 0))
{
g_printerr (_("Failed to write header\n"));
return FALSE;
}
if (!write_hash_table (cache, &context, &new_offset))
{
g_printerr (_("Failed to write hash table\n"));
return FALSE;
}
if (!write_dir_index (cache, new_offset, directories))
{
g_printerr (_("Failed to write folder index\n"));
return FALSE;
}
rewind (cache);
if (!write_header (cache, new_offset))
{
g_printerr (_("Failed to rewrite header\n"));
return FALSE;
}
return TRUE;
}
static gboolean
validate_file (const gchar *file)
{
GMappedFile *map;
CacheInfo info;
map = g_mapped_file_new (file, FALSE, NULL);
if (!map)
return FALSE;
info.cache = g_mapped_file_get_contents (map);
info.cache_size = g_mapped_file_get_length (map);
info.n_directories = 0;
info.flags = CHECK_OFFSETS|CHECK_STRINGS|CHECK_PIXBUFS;
if (!_gtk_icon_cache_validate (&info))
{
g_mapped_file_unref (map);
return FALSE;
}
g_mapped_file_unref (map);
return TRUE;
}
/**
* safe_fclose:
* @f: A FILE* stream, must have underlying fd
*
* Unix defaults for data preservation after system crash
* are unspecified, and many systems will eat your data
* in this situation unless you explicitly fsync().
*
* Returns: %TRUE on success, %FALSE on failure, and will set errno()
*/
static gboolean
safe_fclose (FILE *f)
{
int fd = fileno (f);
g_assert (fd >= 0);
if (fflush (f) == EOF)
return FALSE;
#ifndef G_OS_WIN32
if (fsync (fd) < 0)
return FALSE;
#endif
if (fclose (f) == EOF)
return FALSE;
return TRUE;
}
static void
build_cache (const gchar *path)
{
gchar *cache_path, *tmp_cache_path;
#ifdef G_OS_WIN32
gchar *bak_cache_path = NULL;
#endif
GHashTable *files;
FILE *cache;
GStatBuf path_stat, cache_stat;
struct utimbuf utime_buf;
GList *directories = NULL;
int fd;
int retry_count = 0;
#ifndef G_OS_WIN32
mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
#else
int mode = _S_IWRITE | _S_IREAD;
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
tmp_cache_path = g_build_filename (path, "."CACHE_NAME, NULL);
cache_path = g_build_filename (path, CACHE_NAME, NULL);
opentmp:
if ((fd = g_open (tmp_cache_path, O_WRONLY | O_CREAT | O_EXCL | O_TRUNC | _O_BINARY, mode)) == -1)
{
if (retry_count == 0)
{
retry_count++;
g_remove (tmp_cache_path);
goto opentmp;
}
g_printerr (_("Failed to open file %s : %s\n"), tmp_cache_path, g_strerror (errno));
exit (1);
}
cache = fdopen (fd, "wb");
if (!cache)
{
g_printerr (_("Failed to write cache file: %s\n"), g_strerror (errno));
exit (1);
}
files = g_hash_table_new (g_str_hash, g_str_equal);
image_data_hash = g_hash_table_new (g_str_hash, g_str_equal);
icon_data_hash = g_hash_table_new (g_str_hash, g_str_equal);
string_pool = g_hash_table_new (g_str_hash, g_str_equal);
directories = scan_directory (path, NULL, files, NULL, 0);
if (g_hash_table_size (files) == 0)
{
/* Empty table, just close and remove the file */
fclose (cache);
g_unlink (tmp_cache_path);
g_unlink (cache_path);
exit (0);
}
/* FIXME: Handle failure */
if (!write_file (cache, files, directories))
{
g_unlink (tmp_cache_path);
exit (1);
}
if (!safe_fclose (cache))
{
g_printerr (_("Failed to write cache file: %s\n"), g_strerror (errno));
g_unlink (tmp_cache_path);
exit (1);
}
cache = NULL;
g_list_free_full (directories, g_free);
if (!validate_file (tmp_cache_path))
{
g_printerr (_("The generated cache was invalid.\n"));
/*g_unlink (tmp_cache_path);*/
exit (1);
}
#ifdef G_OS_WIN32
if (g_file_test (cache_path, G_FILE_TEST_EXISTS))
{
bak_cache_path = g_strconcat (cache_path, ".bak", NULL);
g_unlink (bak_cache_path);
if (g_rename (cache_path, bak_cache_path) == -1)
{
int errsv = errno;
g_printerr (_("Could not rename %s to %s: %s, removing %s then.\n"),
cache_path, bak_cache_path,
g_strerror (errsv),
cache_path);
g_unlink (cache_path);
bak_cache_path = NULL;
}
}
#endif
if (g_rename (tmp_cache_path, cache_path) == -1)
{
int errsv = errno;
g_printerr (_("Could not rename %s to %s: %s\n"),
tmp_cache_path, cache_path,
g_strerror (errsv));
g_unlink (tmp_cache_path);
#ifdef G_OS_WIN32
if (bak_cache_path != NULL)
if (g_rename (bak_cache_path, cache_path) == -1)
{
errsv = errno;
g_printerr (_("Could not rename %s back to %s: %s.\n"),
bak_cache_path, cache_path,
g_strerror (errsv));
}
#endif
exit (1);
}
#ifdef G_OS_WIN32
if (bak_cache_path != NULL)
g_unlink (bak_cache_path);
#endif
/* Update time */
/* FIXME: What do do if an error occurs here? */
if (g_stat (path, &path_stat) < 0 ||
g_stat (cache_path, &cache_stat))
exit (1);
utime_buf.actime = path_stat.st_atime;
utime_buf.modtime = cache_stat.st_mtime;
#if GLIB_CHECK_VERSION (2, 17, 1)
g_utime (path, &utime_buf);
#else
utime (path, &utime_buf);
#endif
if (!quiet)
g_printerr (_("Cache file created successfully.\n"));
}
static void
write_csource (const gchar *path)
{
gchar *cache_path;
gchar *data;
gsize len;
gint i;
cache_path = g_build_filename (path, CACHE_NAME, NULL);
if (!g_file_get_contents (cache_path, &data, &len, NULL))
exit (1);
g_printf ("#ifdef __SUNPRO_C\n");
g_printf ("#pragma align 4 (%s)\n", var_name);
g_printf ("#endif\n");
g_printf ("#ifdef __GNUC__\n");
g_printf ("static const guint8 %s[] __attribute__ ((__aligned__ (4))) = \n", var_name);
g_printf ("#else\n");
g_printf ("static const guint8 %s[] = \n", var_name);
g_printf ("#endif\n");
g_printf ("{\n");
for (i = 0; i < len - 1; i++)
{
if (i %12 == 0)
g_printf (" ");
g_printf ("0x%02x, ", (guint8)data[i]);
if (i % 12 == 11)
g_printf ("\n");
}
g_printf ("0x%02x\n};\n", (guint8)data[i]);
}
static GOptionEntry args[] = {
{ "force", 'f', 0, G_OPTION_ARG_NONE, &force_update, N_("Overwrite an existing cache, even if up to date"), NULL },
{ "ignore-theme-index", 't', 0, G_OPTION_ARG_NONE, &ignore_theme_index, N_("Don't check for the existence of index.theme"), NULL },
{ "index-only", 'i', 0, G_OPTION_ARG_NONE, &index_only, N_("Don't include image data in the cache"), NULL },
{ "include-image-data", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &index_only, N_("Include image data in the cache"), NULL },
{ "source", 'c', 0, G_OPTION_ARG_STRING, &var_name, N_("Output a C header file"), "NAME" },
{ "quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet, N_("Turn off verbose output"), NULL },
{ "validate", 'v', 0, G_OPTION_ARG_NONE, &validate, N_("Validate existing icon cache"), NULL },
{ NULL }
};
static void
printerr_handler (const gchar *string)
{
const gchar *charset;
fputs (g_get_prgname (), stderr);
fputs (": ", stderr);
if (g_get_charset (&charset))
fputs (string, stderr); /* charset is UTF-8 already */
else
{
gchar *result;
result = g_convert_with_fallback (string, -1, charset, "UTF-8", "?", NULL, NULL, NULL);
if (result)
{
fputs (result, stderr);
g_free (result);
}
fflush (stderr);
}
}
int
main (int argc, char **argv)
{
gchar *path;
GOptionContext *context;
if (argc < 2)
return 0;
g_set_printerr_handler (printerr_handler);
setlocale (LC_ALL, "");
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
#ifdef HAVE_BIND_TEXTDOMAIN_CODESET
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
#endif
#endif
context = g_option_context_new ("ICONPATH");
g_option_context_add_main_entries (context, args, GETTEXT_PACKAGE);
g_option_context_parse (context, &argc, &argv, NULL);
path = argv[1];
#ifdef G_OS_WIN32
path = g_locale_to_utf8 (path, -1, NULL, NULL, NULL);
#endif
if (validate)
{
gchar *file = g_build_filename (path, CACHE_NAME, NULL);
if (!g_file_test (file, G_FILE_TEST_IS_REGULAR))
{
if (!quiet)
g_printerr (_("File not found: %s\n"), file);
exit (1);
}
if (!validate_file (file))
{
if (!quiet)
g_printerr (_("Not a valid icon cache: %s\n"), file);
exit (1);
}
else
{
exit (0);
}
}
if (!ignore_theme_index && !has_theme_index (path))
{
if (path)
{
g_printerr (_("No theme index file.\n"));
}
else
{
g_printerr (_("No theme index file in '%s'.\n"
"If you really want to create an icon cache here, use --ignore-theme-index.\n"), path);
}
return 1;
}
if (!force_update && is_cache_up_to_date (path))
return 0;
replace_backslashes_with_slashes (path);
build_cache (path);
if (strcmp (var_name, "-") != 0)
write_csource (path);
return 0;
}
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