| 1 |
/* wptNLS.cpp - W32 Native Language Support |
| 2 |
* Copyright (C) 2001, 2002, 2003, 2006 Timo Schulz |
| 3 |
* Copyright (C) 1995-1999 Free Software Foundation, Inc. |
| 4 |
* |
| 5 |
* This code based on the simple-gettext.c code from the GnuPG |
| 6 |
* by Ulrich Drepper. |
| 7 |
* |
| 8 |
* WinPT is free software; you can redistribute it and/or |
| 9 |
* modify it under the terms of the GNU General Public License |
| 10 |
* as published by the Free Software Foundation; either version 2 |
| 11 |
* of the License, or (at your option) any later version. |
| 12 |
* |
| 13 |
* WinPT is distributed in the hope that it will be useful, |
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 |
* General Public License for more details. |
| 17 |
* |
| 18 |
* You should have received a copy of the GNU General Public License |
| 19 |
* along with WinPT; if not, write to the Free Software Foundation, |
| 20 |
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 |
*/ |
| 22 |
|
| 23 |
#ifdef HAVE_CONFIG_H |
| 24 |
#include <config.h> |
| 25 |
#endif |
| 26 |
|
| 27 |
#include <stdio.h> |
| 28 |
#include <string.h> |
| 29 |
#include <ctype.h> |
| 30 |
#include <errno.h> |
| 31 |
#include <sys/types.h> |
| 32 |
#include <sys/stat.h> |
| 33 |
#include <windows.h> |
| 34 |
|
| 35 |
#include "wptNLS.h" |
| 36 |
|
| 37 |
|
| 38 |
/* The magic number of the GNU message catalog format. */ |
| 39 |
#define MAGIC 0x950412de |
| 40 |
#define MAGIC_SWAPPED 0xde120495 |
| 41 |
|
| 42 |
/* Revision number of the currently used .mo (binary) file format. */ |
| 43 |
#define MO_REVISION_NUMBER 0 |
| 44 |
|
| 45 |
#define SWAPIT(flag, data) ((flag) ? do_swap_u32(data) : (data) ) |
| 46 |
|
| 47 |
|
| 48 |
/* We assume to have `unsigned long int' value with at least 32 bits. */ |
| 49 |
#define HASHWORDBITS 32 |
| 50 |
|
| 51 |
/* Header for binary .mo file format. */ |
| 52 |
struct mo_file_header { |
| 53 |
DWORD magic; /* The magic number. */ |
| 54 |
DWORD revision; /* The revision number of the file format. */ |
| 55 |
DWORD nstrings; /* The number of strings pairs. */ |
| 56 |
DWORD orig_tab_offset; /* Offset of table with start offsets of original |
| 57 |
strings. */ |
| 58 |
DWORD trans_tab_offset; /* Offset of table with start offsets of translation |
| 59 |
strings. */ |
| 60 |
DWORD hash_tab_size; /* Size of hashing table. */ |
| 61 |
DWORD hash_tab_offset; /* Offset of first hashing entry. */ |
| 62 |
}; |
| 63 |
|
| 64 |
struct string_desc { |
| 65 |
DWORD length; /* Length of addressed string. */ |
| 66 |
DWORD offset; /* Offset of string in file. */ |
| 67 |
}; |
| 68 |
|
| 69 |
struct loaded_domain { |
| 70 |
char *data; |
| 71 |
int must_swap; |
| 72 |
DWORD nstrings; |
| 73 |
char *mapped; |
| 74 |
struct string_desc *orig_tab; |
| 75 |
struct string_desc *trans_tab; |
| 76 |
DWORD hash_size; |
| 77 |
DWORD *hash_tab; |
| 78 |
}; |
| 79 |
|
| 80 |
/* List of all available languages. */ |
| 81 |
struct lang_table_s lang_list[] = { |
| 82 |
{"en", "English", LANG_ENGLISH}, |
| 83 |
{"de", "German", LANG_GERMAN}, |
| 84 |
{"fr", "French", LANG_FRENCH}, |
| 85 |
{"jp", "Japanese", LANG_JAPANESE}, |
| 86 |
{"pt_BR", "Portuguese (Brazil)", SUBLANG_PORTUGUESE_BRAZILIAN}, |
| 87 |
{NULL, 0} |
| 88 |
}; |
| 89 |
|
| 90 |
/* The current domain. */ |
| 91 |
static struct loaded_domain *the_domain; |
| 92 |
|
| 93 |
|
| 94 |
static DWORD |
| 95 |
do_swap_u32 (DWORD i) |
| 96 |
{ |
| 97 |
return (i << 24) | ((i & 0xff00) << 8) | ((i >> 8) & 0xff00) | (i >> 24); |
| 98 |
} |
| 99 |
|
| 100 |
|
| 101 |
/* The so called `hashpjw' function by P.J. Weinberger |
| 102 |
[see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools, |
| 103 |
1986, 1987 Bell Telephone Laboratories, Inc.] */ |
| 104 |
|
| 105 |
static DWORD |
| 106 |
hash_string (const char *str_param) |
| 107 |
{ |
| 108 |
unsigned long int hval, g; |
| 109 |
const char *str = str_param; |
| 110 |
|
| 111 |
hval = 0; |
| 112 |
while (*str != '\0') { |
| 113 |
hval <<= 4; |
| 114 |
hval += (unsigned long int) *str++; |
| 115 |
g = hval & ((unsigned long int) 0xf << (HASHWORDBITS - 4)); |
| 116 |
if (g != 0) { |
| 117 |
hval ^= g >> (HASHWORDBITS - 8); |
| 118 |
hval ^= g; |
| 119 |
} |
| 120 |
} |
| 121 |
return hval; |
| 122 |
} |
| 123 |
|
| 124 |
/* Missing W32 functions. */ |
| 125 |
static char* |
| 126 |
w32_stpcpy (char *a,const char *b) |
| 127 |
{ |
| 128 |
while (*b) |
| 129 |
*a++ = *b++; |
| 130 |
*a = 0; |
| 131 |
return (char*)a; |
| 132 |
} |
| 133 |
|
| 134 |
|
| 135 |
|
| 136 |
static struct loaded_domain * |
| 137 |
load_domain( const char *filename ) |
| 138 |
{ |
| 139 |
FILE *fp; |
| 140 |
size_t size; |
| 141 |
struct stat st; |
| 142 |
struct mo_file_header *data = NULL; |
| 143 |
struct loaded_domain *domain = NULL; |
| 144 |
size_t to_read; |
| 145 |
char *read_ptr; |
| 146 |
|
| 147 |
fp = fopen( filename, "rb" ); |
| 148 |
if( !fp ) |
| 149 |
return NULL; /* can't open the file */ |
| 150 |
/* we must know about the size of the file */ |
| 151 |
if( fstat( fileno(fp ), &st ) |
| 152 |
|| (size = (size_t)st.st_size) != (size_t)st.st_size |
| 153 |
|| size < sizeof (struct mo_file_header) ) { |
| 154 |
fclose( fp ); |
| 155 |
return NULL; |
| 156 |
} |
| 157 |
|
| 158 |
data = (struct mo_file_header *) malloc( size ); |
| 159 |
if( !data ) { |
| 160 |
fclose( fp ); |
| 161 |
return NULL; /* out of memory */ |
| 162 |
} |
| 163 |
|
| 164 |
to_read = size; |
| 165 |
read_ptr = (char *) data; |
| 166 |
do { |
| 167 |
size_t nb = fread( read_ptr, 1, to_read, fp ); |
| 168 |
if( nb < to_read ) { |
| 169 |
fclose (fp); |
| 170 |
free(data); |
| 171 |
return NULL; /* read error */ |
| 172 |
|
| 173 |
} |
| 174 |
read_ptr += nb; |
| 175 |
to_read -= nb; |
| 176 |
} while( to_read > 0 ); |
| 177 |
fclose (fp); |
| 178 |
|
| 179 |
/* Using the magic number we can test whether it really is a message |
| 180 |
* catalog file. */ |
| 181 |
if( data->magic != MAGIC && data->magic != MAGIC_SWAPPED ) { |
| 182 |
/* The magic number is wrong: not a message catalog file. */ |
| 183 |
free( data ); |
| 184 |
return NULL; |
| 185 |
} |
| 186 |
|
| 187 |
domain = (struct loaded_domain *)calloc( 1, sizeof *domain ); |
| 188 |
if( !domain ) { |
| 189 |
free( data ); |
| 190 |
return NULL; |
| 191 |
} |
| 192 |
domain->data = (char *) data; |
| 193 |
domain->must_swap = data->magic != MAGIC; |
| 194 |
|
| 195 |
/* Fill in the information about the available tables. */ |
| 196 |
switch( SWAPIT(domain->must_swap, data->revision) ) { |
| 197 |
case 0: |
| 198 |
domain->nstrings = SWAPIT(domain->must_swap, data->nstrings); |
| 199 |
domain->orig_tab = (struct string_desc *) |
| 200 |
((char *) data + SWAPIT(domain->must_swap, data->orig_tab_offset)); |
| 201 |
domain->trans_tab = (struct string_desc *) |
| 202 |
((char *) data + SWAPIT(domain->must_swap, data->trans_tab_offset)); |
| 203 |
domain->hash_size = SWAPIT(domain->must_swap, data->hash_tab_size); |
| 204 |
domain->hash_tab = (DWORD *) |
| 205 |
((char *) data + SWAPIT(domain->must_swap, data->hash_tab_offset)); |
| 206 |
break; |
| 207 |
|
| 208 |
default: /* This is an invalid revision. */ |
| 209 |
free( data ); |
| 210 |
free( domain ); |
| 211 |
return NULL; |
| 212 |
} |
| 213 |
|
| 214 |
/* allocate an array to keep track of code page mappings */ |
| 215 |
domain->mapped = (char *)calloc( 1, domain->nstrings ); |
| 216 |
if( !domain->mapped ) { |
| 217 |
free( data ); |
| 218 |
free( domain ); |
| 219 |
return NULL; |
| 220 |
} |
| 221 |
|
| 222 |
return domain; |
| 223 |
} /* load_domain */ |
| 224 |
|
| 225 |
|
| 226 |
/* Set the file used for translations. Pass a NULL to disable translation. |
| 227 |
A new filename may be set at anytime. */ |
| 228 |
int |
| 229 |
set_gettext_file( const char *filename, const char *nls_dir ) |
| 230 |
{ |
| 231 |
struct loaded_domain *domain = NULL; |
| 232 |
|
| 233 |
if( filename && *filename ) { |
| 234 |
if( filename[0] == '/' |
| 235 |
|| ( isalpha(filename[0]) |
| 236 |
&& filename[1] == ':' |
| 237 |
&& (filename[2] == '/' || filename[2] == '\\') ) |
| 238 |
) { |
| 239 |
/* absolute path - use it as is */ |
| 240 |
domain = load_domain( filename ); |
| 241 |
} |
| 242 |
else { /* relative path - append ".mo" and get dir from the environment */ |
| 243 |
char *buf = NULL; |
| 244 |
char *dir; |
| 245 |
|
| 246 |
dir = strdup( nls_dir ); |
| 247 |
if( dir && (buf= (char *)malloc(strlen(dir)+strlen(filename)+1+3+1)) ) { |
| 248 |
strcpy(w32_stpcpy(w32_stpcpy(w32_stpcpy( buf, dir),"/"), filename),".mo"); |
| 249 |
domain = load_domain( buf ); |
| 250 |
free(buf); |
| 251 |
} |
| 252 |
free(dir); |
| 253 |
} |
| 254 |
if( !domain ) |
| 255 |
return -1; |
| 256 |
} |
| 257 |
|
| 258 |
if( the_domain ) { |
| 259 |
free( the_domain->data ); |
| 260 |
free( the_domain->mapped ); |
| 261 |
free( the_domain ); |
| 262 |
the_domain = NULL; |
| 263 |
} |
| 264 |
the_domain = domain; |
| 265 |
return 0; |
| 266 |
} |
| 267 |
|
| 268 |
|
| 269 |
static const char* |
| 270 |
get_string( struct loaded_domain *domain, DWORD idx ) |
| 271 |
{ |
| 272 |
char *p = domain->data + SWAPIT(domain->must_swap, |
| 273 |
domain->trans_tab[idx].offset); |
| 274 |
if( !domain->mapped[idx] ) { |
| 275 |
domain->mapped[idx] = 1; |
| 276 |
} |
| 277 |
return (const char*)p; |
| 278 |
} |
| 279 |
|
| 280 |
|
| 281 |
const char * |
| 282 |
gettext( const char *msgid ) |
| 283 |
{ |
| 284 |
struct loaded_domain *domain; |
| 285 |
size_t act = 0; |
| 286 |
size_t top, bottom; |
| 287 |
|
| 288 |
if (!(domain = the_domain)) |
| 289 |
goto not_found; |
| 290 |
|
| 291 |
/* Locate the MSGID and its translation. */ |
| 292 |
if( domain->hash_size > 2 && domain->hash_tab ) { |
| 293 |
/* Use the hashing table. */ |
| 294 |
DWORD len = strlen (msgid); |
| 295 |
DWORD hash_val = hash_string (msgid); |
| 296 |
DWORD idx = hash_val % domain->hash_size; |
| 297 |
DWORD incr = 1 + (hash_val % (domain->hash_size - 2)); |
| 298 |
DWORD nstr = SWAPIT (domain->must_swap, domain->hash_tab[idx]); |
| 299 |
|
| 300 |
if ( !nstr ) /* Hash table entry is empty. */ |
| 301 |
goto not_found; |
| 302 |
|
| 303 |
|
| 304 |
if( SWAPIT(domain->must_swap, |
| 305 |
domain->orig_tab[nstr - 1].length) == len |
| 306 |
&& !strcmp( msgid, |
| 307 |
domain->data + SWAPIT(domain->must_swap, |
| 308 |
domain->orig_tab[nstr - 1].offset)) ) |
| 309 |
return get_string( domain, nstr - 1 ); |
| 310 |
for(;;) { |
| 311 |
if (idx >= domain->hash_size - incr) |
| 312 |
idx -= domain->hash_size - incr; |
| 313 |
else |
| 314 |
idx += incr; |
| 315 |
nstr = SWAPIT(domain->must_swap, domain->hash_tab[idx]); |
| 316 |
if( !nstr ) |
| 317 |
goto not_found; /* Hash table entry is empty. */ |
| 318 |
|
| 319 |
if ( SWAPIT(domain->must_swap, |
| 320 |
domain->orig_tab[nstr - 1].length) == len |
| 321 |
&& !strcmp (msgid, |
| 322 |
domain->data + SWAPIT(domain->must_swap, |
| 323 |
domain->orig_tab[nstr - 1].offset))) |
| 324 |
|
| 325 |
return get_string( domain, nstr-1 ); |
| 326 |
} /* NOTREACHED */ |
| 327 |
} |
| 328 |
|
| 329 |
/* Now we try the default method: binary search in the sorted |
| 330 |
array of messages. */ |
| 331 |
bottom = 0; |
| 332 |
top = domain->nstrings; |
| 333 |
while( bottom < top ) { |
| 334 |
int cmp_val; |
| 335 |
|
| 336 |
act = (bottom + top) / 2; |
| 337 |
cmp_val = strcmp(msgid, domain->data + SWAPIT(domain->must_swap, |
| 338 |
domain->orig_tab[act].offset)); |
| 339 |
if (cmp_val < 0) |
| 340 |
top = act; |
| 341 |
else if (cmp_val > 0) |
| 342 |
bottom = act + 1; |
| 343 |
else |
| 344 |
return get_string( domain, act ); |
| 345 |
} |
| 346 |
|
| 347 |
not_found: |
| 348 |
return msgid; |
| 349 |
} /* gettext */ |
| 350 |
|
| 351 |
|
| 352 |
/* Map the user specific language ID to a gettext conform language string. |
| 353 |
Example: LANG_GERMAN -> "de" */ |
| 354 |
const char* |
| 355 |
get_gettext_langid (void) |
| 356 |
{ |
| 357 |
LANGID lang; |
| 358 |
int i; |
| 359 |
|
| 360 |
lang = GetUserDefaultLangID (); |
| 361 |
if (PRIMARYLANGID (lang) == LANG_ENGLISH) |
| 362 |
return NULL; |
| 363 |
|
| 364 |
for (i=0; lang_list[i].id; i++) { |
| 365 |
if (PRIMARYLANGID (lang) == lang_list[i].langid) |
| 366 |
return lang_list[i].id; |
| 367 |
} |
| 368 |
return NULL; |
| 369 |
} |
| 370 |
|
| 371 |
|
| 372 |
/* Take a table with control item IDs and their translation |
| 373 |
and set each text to the translated value. */ |
| 374 |
void |
| 375 |
gettext_localize_dialog (HWND dlg, struct gettext_tab_s *tab, |
| 376 |
const char *title) |
| 377 |
{ |
| 378 |
int i; |
| 379 |
|
| 380 |
for (i=0; tab[i].trans != NULL; i++) |
| 381 |
SetDlgItemText (dlg, tab[i].ctlid, tab[i].trans); |
| 382 |
if (title) |
| 383 |
SetWindowText (dlg, title); |
| 384 |
} |
| 385 |
|
| 386 |
|
| 387 |
/* XXX: this has to be placed in a .c file but not here */ |
| 388 |
#include <shlobj.h> |
| 389 |
|
| 390 |
void _SHFree (void *p) |
| 391 |
{ |
| 392 |
IMalloc *pm; |
| 393 |
SHGetMalloc(&pm); |
| 394 |
if (pm) { |
| 395 |
pm->lpVtbl->Free(pm,p); |
| 396 |
pm->lpVtbl->Release(pm); |
| 397 |
} |
| 398 |
} |
Parent Directory
| 
Revision Log