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werner |
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/* wptNLS.cpp - W32 Native Language Support |
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twoaday |
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* Copyright (C) 2001, 2002, 2003, 2006 Timo Schulz |
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werner |
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* Copyright (C) 1995-1999 Free Software Foundation, Inc. |
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* |
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* This code based on the simple-gettext.c code from the GnuPG |
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* by Ulrich Drepper. |
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* |
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* WinPT is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* WinPT is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with WinPT; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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#include <stdio.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include <errno.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <windows.h> |
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#include "wptNLS.h" |
36 |
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|
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twoaday |
176 |
|
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werner |
36 |
/* The magic number of the GNU message catalog format. */ |
39 |
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#define MAGIC 0x950412de |
40 |
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#define MAGIC_SWAPPED 0xde120495 |
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|
42 |
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/* Revision number of the currently used .mo (binary) file format. */ |
43 |
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#define MO_REVISION_NUMBER 0 |
44 |
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45 |
twoaday |
193 |
#define SWAPIT(flag, data) ((flag) ? do_swap_u32(data) : (data) ) |
46 |
werner |
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|
47 |
twoaday |
193 |
|
48 |
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/* We assume to have `unsigned long int' value with at least 32 bits. */ |
49 |
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#define HASHWORDBITS 32 |
50 |
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51 |
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/* The so called `hashpjw' function by P.J. Weinberger |
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[see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools, |
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1986, 1987 Bell Telephone Laboratories, Inc.] */ |
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werner |
36 |
/* Header for binary .mo file format. */ |
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struct mo_file_header { |
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twoaday |
193 |
DWORD magic; /* The magic number. */ |
58 |
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DWORD revision; /* The revision number of the file format. */ |
59 |
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DWORD nstrings; /* The number of strings pairs. */ |
60 |
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DWORD orig_tab_offset; /* Offset of table with start offsets of original |
61 |
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strings. */ |
62 |
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DWORD trans_tab_offset; /* Offset of table with start offsets of translation |
63 |
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strings. */ |
64 |
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DWORD hash_tab_size; /* Size of hashing table. */ |
65 |
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DWORD hash_tab_offset; /* Offset of first hashing entry. */ |
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werner |
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}; |
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68 |
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struct string_desc { |
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twoaday |
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DWORD length; /* Length of addressed string. */ |
70 |
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DWORD offset; /* Offset of string in file. */ |
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werner |
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}; |
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struct loaded_domain { |
74 |
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char *data; |
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int must_swap; |
76 |
twoaday |
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DWORD nstrings; |
77 |
werner |
36 |
char *mapped; |
78 |
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struct string_desc *orig_tab; |
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struct string_desc *trans_tab; |
80 |
twoaday |
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DWORD hash_size; |
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DWORD *hash_tab; |
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werner |
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}; |
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twoaday |
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/* List of all available languages. */ |
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struct lang_table_s lang_list[] = { |
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{"en", "English", LANG_ENGLISH}, |
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{"de", "German", LANG_GERMAN}, |
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{"fr", "French", LANG_FRENCH}, |
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{"jp", "Japanese", LANG_JAPANESE}, |
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{NULL, 0} |
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}; |
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/* The current domain. */ |
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werner |
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static struct loaded_domain *the_domain; |
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twoaday |
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|
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static DWORD |
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do_swap_u32 (DWORD i) |
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werner |
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{ |
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twoaday |
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return (i << 24) | ((i & 0xff00) << 8) | ((i >> 8) & 0xff00) | (i >> 24); |
101 |
werner |
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} |
102 |
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103 |
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twoaday |
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/* Missing W32 functions. */ |
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static char* |
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w32_stpcpy (char *a,const char *b) |
107 |
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{ |
108 |
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while (*b) |
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*a++ = *b++; |
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*a = 0; |
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return (char*)a; |
112 |
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} |
113 |
werner |
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|
114 |
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115 |
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twoaday |
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static DWORD |
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hash_string (const char *str_param) |
118 |
werner |
36 |
{ |
119 |
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unsigned long int hval, g; |
120 |
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const char *str = str_param; |
121 |
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122 |
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hval = 0; |
123 |
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while (*str != '\0') { |
124 |
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hval <<= 4; |
125 |
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hval += (unsigned long int) *str++; |
126 |
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g = hval & ((unsigned long int) 0xf << (HASHWORDBITS - 4)); |
127 |
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if (g != 0) { |
128 |
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hval ^= g >> (HASHWORDBITS - 8); |
129 |
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hval ^= g; |
130 |
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} |
131 |
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} |
132 |
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return hval; |
133 |
twoaday |
193 |
} |
134 |
werner |
36 |
|
135 |
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136 |
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static struct loaded_domain * |
137 |
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load_domain( const char *filename ) |
138 |
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{ |
139 |
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FILE *fp; |
140 |
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size_t size; |
141 |
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struct stat st; |
142 |
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struct mo_file_header *data = NULL; |
143 |
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struct loaded_domain *domain = NULL; |
144 |
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size_t to_read; |
145 |
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char *read_ptr; |
146 |
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147 |
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fp = fopen( filename, "rb" ); |
148 |
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if( !fp ) |
149 |
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return NULL; /* can't open the file */ |
150 |
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/* we must know about the size of the file */ |
151 |
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if( fstat( fileno(fp ), &st ) |
152 |
twoaday |
193 |
|| (size = (size_t)st.st_size) != (size_t)st.st_size |
153 |
werner |
36 |
|| size < sizeof (struct mo_file_header) ) { |
154 |
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fclose( fp ); |
155 |
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return NULL; |
156 |
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} |
157 |
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158 |
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data = (struct mo_file_header *) malloc( size ); |
159 |
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if( !data ) { |
160 |
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fclose( fp ); |
161 |
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return NULL; /* out of memory */ |
162 |
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} |
163 |
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164 |
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to_read = size; |
165 |
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read_ptr = (char *) data; |
166 |
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do { |
167 |
twoaday |
193 |
size_t nb = fread( read_ptr, 1, to_read, fp ); |
168 |
werner |
36 |
if( nb < to_read ) { |
169 |
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fclose (fp); |
170 |
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free(data); |
171 |
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return NULL; /* read error */ |
172 |
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173 |
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} |
174 |
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read_ptr += nb; |
175 |
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to_read -= nb; |
176 |
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} while( to_read > 0 ); |
177 |
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fclose (fp); |
178 |
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179 |
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/* Using the magic number we can test whether it really is a message |
180 |
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* catalog file. */ |
181 |
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if( data->magic != MAGIC && data->magic != MAGIC_SWAPPED ) { |
182 |
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/* The magic number is wrong: not a message catalog file. */ |
183 |
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free( data ); |
184 |
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return NULL; |
185 |
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} |
186 |
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187 |
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domain = (struct loaded_domain *)calloc( 1, sizeof *domain ); |
188 |
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if( !domain ) { |
189 |
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free( data ); |
190 |
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return NULL; |
191 |
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} |
192 |
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domain->data = (char *) data; |
193 |
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domain->must_swap = data->magic != MAGIC; |
194 |
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195 |
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/* Fill in the information about the available tables. */ |
196 |
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switch( SWAPIT(domain->must_swap, data->revision) ) { |
197 |
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case 0: |
198 |
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domain->nstrings = SWAPIT(domain->must_swap, data->nstrings); |
199 |
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domain->orig_tab = (struct string_desc *) |
200 |
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((char *) data + SWAPIT(domain->must_swap, data->orig_tab_offset)); |
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domain->trans_tab = (struct string_desc *) |
202 |
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((char *) data + SWAPIT(domain->must_swap, data->trans_tab_offset)); |
203 |
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domain->hash_size = SWAPIT(domain->must_swap, data->hash_tab_size); |
204 |
twoaday |
193 |
domain->hash_tab = (DWORD *) |
205 |
werner |
36 |
((char *) data + SWAPIT(domain->must_swap, data->hash_tab_offset)); |
206 |
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break; |
207 |
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208 |
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default: /* This is an invalid revision. */ |
209 |
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free( data ); |
210 |
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free( domain ); |
211 |
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return NULL; |
212 |
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} |
213 |
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214 |
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/* allocate an array to keep track of code page mappings */ |
215 |
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domain->mapped = (char *)calloc( 1, domain->nstrings ); |
216 |
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if( !domain->mapped ) { |
217 |
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free( data ); |
218 |
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free( domain ); |
219 |
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return NULL; |
220 |
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} |
221 |
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222 |
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return domain; |
223 |
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} /* load_domain */ |
224 |
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225 |
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226 |
twoaday |
193 |
/* Set the file used for translations. Pass a NULL to disable translation. |
227 |
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A new filename may be set at anytime. */ |
228 |
werner |
36 |
int |
229 |
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set_gettext_file( const char *filename, const char *nls_dir ) |
230 |
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{ |
231 |
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struct loaded_domain *domain = NULL; |
232 |
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233 |
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if( filename && *filename ) { |
234 |
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if( filename[0] == '/' |
235 |
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|| ( isalpha(filename[0]) |
236 |
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&& filename[1] == ':' |
237 |
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&& (filename[2] == '/' || filename[2] == '\\') ) |
238 |
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) { |
239 |
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/* absolute path - use it as is */ |
240 |
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domain = load_domain( filename ); |
241 |
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} |
242 |
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else { /* relative path - append ".mo" and get dir from the environment */ |
243 |
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char *buf = NULL; |
244 |
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char *dir; |
245 |
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246 |
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dir = strdup( nls_dir ); |
247 |
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if( dir && (buf= (char *)malloc(strlen(dir)+strlen(filename)+1+3+1)) ) { |
248 |
twoaday |
69 |
strcpy(w32_stpcpy(w32_stpcpy(w32_stpcpy( buf, dir),"/"), filename),".mo"); |
249 |
werner |
36 |
domain = load_domain( buf ); |
250 |
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free(buf); |
251 |
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} |
252 |
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free(dir); |
253 |
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} |
254 |
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if( !domain ) |
255 |
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return -1; |
256 |
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} |
257 |
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|
258 |
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if( the_domain ) { |
259 |
|
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free( the_domain->data ); |
260 |
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free( the_domain->mapped ); |
261 |
|
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free( the_domain ); |
262 |
|
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the_domain = NULL; |
263 |
|
|
} |
264 |
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the_domain = domain; |
265 |
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return 0; |
266 |
twoaday |
193 |
} |
267 |
werner |
36 |
|
268 |
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|
269 |
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static const char* |
270 |
twoaday |
193 |
get_string( struct loaded_domain *domain, DWORD idx ) |
271 |
werner |
36 |
{ |
272 |
|
|
char *p = domain->data + SWAPIT(domain->must_swap, |
273 |
|
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domain->trans_tab[idx].offset); |
274 |
|
|
if( !domain->mapped[idx] ) { |
275 |
|
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domain->mapped[idx] = 1; |
276 |
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|
} |
277 |
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return (const char*)p; |
278 |
twoaday |
193 |
} |
279 |
werner |
36 |
|
280 |
twoaday |
193 |
|
281 |
werner |
36 |
const char * |
282 |
|
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gettext( const char *msgid ) |
283 |
|
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{ |
284 |
|
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struct loaded_domain *domain; |
285 |
|
|
size_t act = 0; |
286 |
|
|
size_t top, bottom; |
287 |
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|
288 |
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if( !(domain = the_domain) ) |
289 |
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goto not_found; |
290 |
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|
291 |
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/* Locate the MSGID and its translation. */ |
292 |
|
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if( domain->hash_size > 2 && domain->hash_tab ) { |
293 |
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/* Use the hashing table. */ |
294 |
twoaday |
193 |
DWORD len = strlen (msgid); |
295 |
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|
DWORD hash_val = hash_string (msgid); |
296 |
|
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DWORD idx = hash_val % domain->hash_size; |
297 |
|
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DWORD incr = 1 + (hash_val % (domain->hash_size - 2)); |
298 |
|
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DWORD nstr = SWAPIT (domain->must_swap, domain->hash_tab[idx]); |
299 |
werner |
36 |
|
300 |
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if ( !nstr ) /* Hash table entry is empty. */ |
301 |
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goto not_found; |
302 |
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|
303 |
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|
304 |
|
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if( SWAPIT(domain->must_swap, |
305 |
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domain->orig_tab[nstr - 1].length) == len |
306 |
|
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&& !strcmp( msgid, |
307 |
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domain->data + SWAPIT(domain->must_swap, |
308 |
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domain->orig_tab[nstr - 1].offset)) ) |
309 |
|
|
return get_string( domain, nstr - 1 ); |
310 |
|
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for(;;) { |
311 |
|
|
if (idx >= domain->hash_size - incr) |
312 |
|
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idx -= domain->hash_size - incr; |
313 |
|
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else |
314 |
|
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idx += incr; |
315 |
|
|
nstr = SWAPIT(domain->must_swap, domain->hash_tab[idx]); |
316 |
|
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if( !nstr ) |
317 |
|
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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 |
|
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domain->orig_tab[nstr - 1].offset))) |
324 |
|
|
|
325 |
|
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return get_string( domain, nstr-1 ); |
326 |
|
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} /* NOTREACHED */ |
327 |
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} |
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 |
|
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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 |
twoaday |
176 |
|
352 |
twoaday |
193 |
/* Map the user specific language ID to a gettext conform language string. |
353 |
twoaday |
76 |
Example: LANG_GERMAN -> "de" */ |
354 |
|
|
const char* |
355 |
|
|
get_gettext_langid (void) |
356 |
|
|
{ |
357 |
|
|
LANGID lang; |
358 |
|
|
int i; |
359 |
twoaday |
176 |
|
360 |
twoaday |
76 |
lang = GetUserDefaultLangID (); |
361 |
twoaday |
193 |
if (PRIMARYLANGID (lang) == LANG_ENGLISH) |
362 |
|
|
return NULL; |
363 |
twoaday |
176 |
|
364 |
twoaday |
193 |
for (i=0; lang_list[i].id; i++) { |
365 |
|
|
if (PRIMARYLANGID (lang) == lang_list[i].langid) |
366 |
|
|
return lang_list[i].id; |
367 |
twoaday |
76 |
} |
368 |
|
|
return NULL; |
369 |
|
|
} |
370 |
werner |
36 |
|
371 |
twoaday |
76 |
|
372 |
twoaday |
176 |
/* 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 |
werner |
36 |
/* 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 |
|
|
} |