Desktop
/* $Id: mime.c,v 1.36 2011/03/03 05:42:05 khorben Exp $ */
/* Copyright (c) 2011 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Browser */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fnmatch.h>
#include <errno.h>
#include <libintl.h>
#include <System.h>
#include "mime.h"
#include "../config.h"
#define _(string) gettext(string)
/* Mime */
/* private */
/* types */
typedef struct _MimeType
{
char * type;
char ** globs;
size_t globs_cnt;
GdkPixbuf * icon_24;
#if GTK_CHECK_VERSION(2, 6, 0)
GdkPixbuf * icon_48;
GdkPixbuf * icon_96;
#endif
} MimeType;
struct _Mime
{
MimeType * types;
size_t types_cnt;
Config * config;
};
/* constants */
#define MIME_CONFIG_FILE ".mime"
/* public */
/* functions */
/* mime_new */
static void _new_config(Mime * mime);
Mime * mime_new(void)
{
Mime * mime;
char * globs[] = {
PREFIX "/share/mime/globs",
"/usr/share/mime/globs",
"/usr/local/share/mime/globs",
"/usr/pkg/share/mime/globs",
NULL };
char ** g = globs;
FILE * fp = NULL;
char buf[256];
size_t len;
char * glob;
MimeType * p;
size_t i;
char ** q;
if((mime = malloc(sizeof(*mime))) == NULL)
return NULL;
for(g = globs; *g != NULL; g++)
if((fp = fopen(*g, "r")) != NULL)
break;
if(fp == NULL)
{
perror(_("Could not load MIME globs"));
free(mime);
return NULL;
}
mime->types = NULL;
mime->types_cnt = 0;
_new_config(mime);
while(fgets(buf, sizeof(buf), fp) != NULL)
{
errno = EINVAL;
len = strlen(buf);
if(buf[--len] != '\n')
break;
if(buf[0] == '#')
continue;
buf[len] = '\0';
glob = strchr(buf, ':');
*(glob++) = '\0';
for(i = 0; i < mime->types_cnt; i++)
if(strcmp(mime->types[i].type, buf) == 0)
break;
if(i < mime->types_cnt)
p = &mime->types[i];
else if((p = realloc(mime->types, sizeof(*p) * (mime->types_cnt
+ 1))) == NULL)
break;
else
{
mime->types = p;
p = &p[mime->types_cnt];
p->type = strdup(buf);
p->globs = NULL;
p->globs_cnt = 0;
}
if((q = realloc(p->globs, sizeof(*p->globs)
* (p->globs_cnt + 1))) != NULL)
{
p->globs = q;
p->globs[p->globs_cnt] = strdup(glob);
}
if(p->type == NULL || p->globs == NULL
|| p->globs[p->globs_cnt] == NULL)
{
free(p->type);
free(p->globs);
break;
}
if(p->globs_cnt++ == 0)
mime->types_cnt++;
p->icon_24 = NULL;
#if GTK_CHECK_VERSION(2, 6, 0)
p->icon_48 = NULL;
p->icon_96 = NULL;
#endif
#if 0
p->open = mime->config != NULL
? config_get(mime->config, buf, "open") : NULL;
p->edit = mime->config != NULL
? config_get(mime->config, buf, "edit") : NULL;
#endif
}
if(!feof(fp))
{
perror(*g);
mime_delete(mime);
mime = NULL;
}
fclose(fp);
return mime;
}
static void _new_config(Mime * mime)
{
size_t len;
char * homedir;
char * filename;
if((homedir = getenv("HOME")) == NULL)
return;
if((mime->config = config_new()) == NULL)
return;
len = strlen(homedir) + 1 + strlen(MIME_CONFIG_FILE) + 1;
if((filename = malloc(len)) == NULL)
return;
snprintf(filename, len, "%s/%s", homedir, MIME_CONFIG_FILE);
config_load(mime->config, filename);
free(filename);
}
/* mime_delete */
void mime_delete(Mime * mime)
{
size_t i;
size_t j;
for(i = 0; i < mime->types_cnt; i++)
{
free(mime->types[i].type);
for(j = 0; j < mime->types[i].globs_cnt; j++)
free(mime->types[i].globs[j]);
free(mime->types[i].globs);
free(mime->types[i].icon_24);
#if GTK_CHECK_VERSION(2, 6, 0)
free(mime->types[i].icon_48);
free(mime->types[i].icon_96);
#endif
}
free(mime->types);
if(mime->config != NULL)
config_delete(mime->config);
free(mime);
}
/* accessors */
/* mime_get_handler */
char const * mime_get_handler(Mime * mime, char const * type,
char const * action)
{
char const * program;
char * p;
char * q;
if(type == NULL || action == NULL)
{
error_set_code(1, "%s", strerror(EINVAL));
return NULL;
}
if((program = config_get(mime->config, type, action)) != NULL)
return program;
if((p = strchr(type, '/')) == NULL || *(++p) == '\0'
|| (p = strdup(type)) == NULL)
{
error_set_code(1, "%s", strerror(errno)); /* XXX may be wrong */
return NULL;
}
q = strchr(p, '/');
q[1] = '*';
q[2] = '\0';
program = config_get(mime->config, p, action);
free(p);
return program;
}
/* useful */
/* mime_type */
char const * mime_type(Mime * mime, char const * path)
{
char const * p;
size_t i;
size_t j;
p = strrchr(path, '/');
p = (p != NULL) ? p + 1 : path;
for(i = 0; i < mime->types_cnt; i++)
{
for(j = 0; j < mime->types[i].globs_cnt; j++)
if(fnmatch(mime->types[i].globs[j], p, FNM_NOESCAPE)
== 0)
break;
if(j < mime->types[i].globs_cnt)
break;
}
#ifdef FNM_CASEFOLD
if(i < mime->types_cnt)
return mime->types[i].type;
for(i = 0; i < mime->types_cnt; i++)
for(j = 0; j < mime->types[i].globs_cnt; j++)
if(fnmatch(mime->types[i].globs[j], p,
FNM_NOESCAPE | FNM_CASEFOLD)
== 0)
return mime->types[i].type;
#endif
return NULL;
}
/* mime_action */
int mime_action(Mime * mime, char const * action, char const * path)
{
char const * type;
if((type = mime_type(mime, path)) == NULL)
return 1;
return mime_action_type(mime, action, path, type);
}
/* mime_action_type */
int mime_action_type(Mime * mime, char const * action, char const * path,
char const * type)
{
int ret = 0;
char const * program;
char * argv[3];
GError * error = NULL;
if((program = mime_get_handler(mime, type, action)) == NULL)
return -1;
argv[0] = strdup(program);
argv[1] = strdup(path);
argv[2] = NULL;
if(argv[0] == NULL || argv[1] == NULL)
ret = -error_set_code(2, "%s", strerror(errno));
else if(g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
NULL, &error) == FALSE)
ret = -error_set_code(2, "%s: %s", argv[0], error->message);
free(argv[0]);
free(argv[1]);
return ret;
}
/* mime_foreach */
void mime_foreach(Mime * mime, MimeForeachCallback callback, void * data)
{
size_t i;
for(i = 0; i < mime->types_cnt; i++)
callback(data, mime->types[i].type, mime->types[i].icon_24,
#if GTK_CHECK_VERSION(2, 6, 0)
mime->types[i].icon_48, mime->types[i].icon_96);
#else
NULL, NULL);
#endif
}
/* mime_icons */
static GdkPixbuf * _icons_size(GtkIconTheme * theme, char const * type,
int size);
void mime_icons(Mime * mime, GtkIconTheme * theme, char const * type, ...)
{
size_t i;
va_list arg;
int size;
GdkPixbuf ** icon;
for(i = 0; i < mime->types_cnt; i++)
if(strcmp(type, mime->types[i].type) == 0)
break;
if(i == mime->types_cnt)
return;
va_start(arg, type);
while((size = va_arg(arg, int)) > 0)
{
icon = va_arg(arg, GdkPixbuf **);
if(size == 24)
{
if(mime->types[i].icon_24 == NULL)
mime->types[i].icon_24 = _icons_size(theme,
type, 24);
*icon = mime->types[i].icon_24;
}
#if GTK_CHECK_VERSION(2, 6, 0)
else if(size == 48)
{
if(mime->types[i].icon_48 == NULL)
mime->types[i].icon_48 = _icons_size(theme,
type, 48);
*icon = mime->types[i].icon_48;
}
else if(size == 96)
{
if(mime->types[i].icon_96 == NULL)
mime->types[i].icon_96 = _icons_size(theme,
type, 96);
*icon = mime->types[i].icon_96;
}
#endif
else
*icon = _icons_size(theme, type, size);
}
va_end(arg);
}
static GdkPixbuf * _icons_size(GtkIconTheme * theme, char const * type,
int size)
{
static char buf[256] = "gnome-mime-";
char * p;
GtkIconLookupFlags flags = GTK_ICON_LOOKUP_USE_BUILTIN
| GTK_ICON_LOOKUP_GENERIC_FALLBACK;
strncpy(&buf[11], type, sizeof(buf) - 11);
buf[sizeof(buf) - 1] = '\0';
for(; (p = strchr(&buf[11], '/')) != NULL; *p = '-');
return gtk_icon_theme_load_icon(theme, buf, size, flags, NULL);
}