2 * Navit, a modular navigation system.
3 * Copyright (C) 2005-2008 Navit Team
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * version 2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
20 #define _FILE_OFFSET_BITS 64
21 #define _LARGEFILE_SOURCE
22 #define _LARGEFILE64_SOURCE
47 static GHashTable *file_name_hash;
50 static struct cache *file_cache;
52 struct file_cache_id {
57 } __attribute__ ((packed));
60 file_create(char *name)
63 struct file *file= g_new0(struct file,1);
67 file->fd=open(name, O_RDONLY|O_LARGEFILE | O_BINARY);
72 dbg(1,"fd=%d\n", file->fd);
73 fstat(file->fd, &stat);
74 file->size=stat.st_size;
75 dbg(1,"size=%Ld\n", file->size);
76 file->name = g_strdup(name);
77 dbg_assert(file != NULL);
81 int file_is_dir(char *name)
84 if (! stat(name, &buf)) {
85 return S_ISDIR(buf.st_mode);
91 int file_mkdir(char *name, int pflag)
93 char buffer[strlen(name)+1];
96 dbg(1,"enter %s %d\n",name,pflag);
98 if (file_is_dir(name))
100 #ifdef HAVE_API_WIN32_BASE
103 return mkdir(name, 0777);
106 strcpy(buffer, name);
108 while ((next=strchr(next, '/'))) {
111 ret=file_mkdir(buffer, 0);
119 return file_mkdir(buffer, 0);
123 file_mmap(struct file *file)
125 #if defined(_WIN32) || defined(__CEGCC__)
126 file->begin = (char*)mmap_readonly_win32( file->name, &file->map_handle, &file->map_file );
128 file->begin=mmap(NULL, file->size, PROT_READ|PROT_WRITE, MAP_PRIVATE, file->fd, 0);
129 dbg_assert(file->begin != NULL);
130 if (file->begin == (void *)0xffffffff) {
135 dbg_assert(file->begin != (void *)0xffffffff);
136 file->end=file->begin+file->size;
142 file_data_read(struct file *file, long long offset, int size)
146 return file->begin+offset;
148 struct file_cache_id id={offset,size,file->name_id,0};
149 ret=cache_lookup(file_cache,&id);
152 ret=cache_insert_new(file_cache,&id,size);
155 lseek(file->fd, offset, SEEK_SET);
156 if (read(file->fd, ret, size) != size) {
157 file_data_free(file, ret);
165 uncompress_int(Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen)
170 stream.next_in = (Bytef*)source;
171 stream.avail_in = (uInt)sourceLen;
172 stream.next_out = dest;
173 stream.avail_out = (uInt)*destLen;
175 stream.zalloc = (alloc_func)0;
176 stream.zfree = (free_func)0;
178 err = inflateInit2(&stream, -MAX_WBITS);
179 if (err != Z_OK) return err;
181 err = inflate(&stream, Z_FINISH);
182 if (err != Z_STREAM_END) {
184 if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
188 *destLen = stream.total_out;
190 err = inflateEnd(&stream);
195 file_data_read_compressed(struct file *file, long long offset, int size, int size_uncomp)
199 uLongf destLen=size_uncomp;
202 struct file_cache_id id={offset,size,file->name_id,1};
203 ret=cache_lookup(file_cache,&id);
206 ret=cache_insert_new(file_cache,&id,size_uncomp);
208 ret=g_malloc(size_uncomp);
209 lseek(file->fd, offset, SEEK_SET);
210 if (read(file->fd, buffer, size) != size) {
214 if (uncompress_int(ret, &destLen, (Bytef *)buffer, size) != Z_OK) {
215 dbg(0,"uncompress failed\n");
224 file_data_free(struct file *file, unsigned char *data)
226 if (file->begin && data >= file->begin && data < file->end)
229 cache_entry_destroy(file_cache, data);
235 file_exists(char *name)
238 if (! stat(name, &buf))
244 file_remap_readonly(struct file *f)
246 #if defined(_WIN32) || defined(__CEGCC__)
249 munmap(f->begin, f->size);
250 begin=mmap(f->begin, f->size, PROT_READ, MAP_PRIVATE, f->fd, 0);
251 if (f->begin != begin)
252 printf("remap failed\n");
257 file_unmap(struct file *f)
259 #if defined(_WIN32) || defined(__CEGCC__)
260 mmap_unmap_win32( f->begin, f->map_handle , f->map_file );
262 munmap(f->begin, f->size);
267 file_opendir(char *dir)
273 file_readdir(void *hnd)
284 file_closedir(void *hnd)
290 file_create_caseinsensitive(char *name)
292 char dirname[strlen(name)+1];
298 ret=file_create(name);
302 strcpy(dirname, name);
303 p=dirname+strlen(name);
304 while (p > dirname) {
310 d=file_opendir(dirname);
313 while ((filename=file_readdir(d))) {
314 if (!strcasecmp(filename, p)) {
316 ret=file_create(dirname);
327 file_destroy(struct file *f)
331 if ( f->begin != NULL )
340 struct file_wordexp {
345 struct file_wordexp *
346 file_wordexp_new(const char *pattern)
348 struct file_wordexp *ret=g_new0(struct file_wordexp, 1);
350 ret->err=wordexp(pattern, &ret->we, 0);
352 dbg(0,"wordexp('%s') returned %d\n", pattern, ret->err);
357 file_wordexp_get_count(struct file_wordexp *wexp)
359 return wexp->we.we_wordc;
363 file_wordexp_get_array(struct file_wordexp *wexp)
365 return wexp->we.we_wordv;
369 file_wordexp_destroy(struct file_wordexp *wexp)
378 file_get_param(struct file *file, struct param_list *param, int count)
381 param_add_string("Filename", file->name, ¶m, &count);
382 param_add_hex("Size", file->size, ¶m, &count);
387 file_version(struct file *file, int byname)
393 error=stat(file->name, &st);
395 error=fstat(file->fd, &st);
396 if (error || !file->version || file->mtime != st.st_mtime || file->ctime != st.st_ctime) {
397 file->mtime=st.st_mtime;
398 file->ctime=st.st_ctime;
400 dbg(0,"%s now version %d\n", file->name, file->version);
402 return file->version;
409 file_get_os_handle(struct file *file)
411 return (void *)(file->fd);
418 file_name_hash=g_hash_table_new(g_str_hash, g_str_equal);
419 file_cache=cache_new(sizeof(struct file_cache_id), CACHE_SIZE);