From b9ca7b1ef5cd1f96ae6e28ae78d12c1e3258c23f Mon Sep 17 00:00:00 2001 From: hiro Date: Wed, 12 Jan 2005 11:22:08 +0000 Subject: Initial import of Sylpheed (GTK2 version). git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@1 ee746299-78ed-0310-b773-934348b2243d --- src/simple-gettext.c | 386 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 386 insertions(+) create mode 100644 src/simple-gettext.c (limited to 'src/simple-gettext.c') diff --git a/src/simple-gettext.c b/src/simple-gettext.c new file mode 100644 index 00000000..be6292bb --- /dev/null +++ b/src/simple-gettext.c @@ -0,0 +1,386 @@ +/* simple-gettext.c - a simplified version of gettext. + * Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG 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; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG 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, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +/* This is a simplified version of gettext written by Ulrich Drepper. + * It is used for the Win32 version of GnuPG becuase all the overhead + * of gettext is not needed and we have to do some special Win32 stuff. + * I decided that this is far easier than to tweak gettext for the special + * cases (I tried it but it is a lot of code). wk 15.09.99 + */ + +#include +#ifdef USE_SIMPLE_GETTEXT +#ifndef __MINGW32__ + #error This file can only be used with MinGW32 +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include "w32reg.h" + +typedef unsigned int u32; /* That is fine with MingW32 */ + +typedef unsigned long ulong; + +/* The magic number of the GNU message catalog format. */ +#define MAGIC 0x950412de +#define MAGIC_SWAPPED 0xde120495 + +/* Revision number of the currently used .mo (binary) file format. */ +#define MO_REVISION_NUMBER 0 + + +/* Header for binary .mo file format. */ +struct mo_file_header +{ + /* The magic number. */ + u32 magic; + /* The revision number of the file format. */ + u32 revision; + /* The number of strings pairs. */ + u32 nstrings; + /* Offset of table with start offsets of original strings. */ + u32 orig_tab_offset; + /* Offset of table with start offsets of translation strings. */ + u32 trans_tab_offset; + /* Size of hashing table. */ + u32 hash_tab_size; + /* Offset of first hashing entry. */ + u32 hash_tab_offset; +}; + +struct string_desc +{ + /* Length of addressed string. */ + u32 length; + /* Offset of string in file. */ + u32 offset; +}; + + + +struct loaded_domain +{ + char *data; + int must_swap; + u32 nstrings; + char *mapped; + struct string_desc *orig_tab; + struct string_desc *trans_tab; + u32 hash_size; + u32 *hash_tab; +}; + + +static struct loaded_domain *the_domain; + +static __inline__ u32 +do_swap_u32( u32 i ) +{ + return (i << 24) | ((i & 0xff00) << 8) | ((i >> 8) & 0xff00) | (i >> 24); +} + +#define SWAPIT(flag, data) ((flag) ? do_swap_u32(data) : (data) ) + + +/* We assume to have `unsigned long int' value with at least 32 bits. */ +#define HASHWORDBITS 32 + +/* The so called `hashpjw' function by P.J. Weinberger + [see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools, + 1986, 1987 Bell Telephone Laboratories, Inc.] */ + +static __inline__ ulong +hash_string( const char *str_param ) +{ + unsigned long int hval, g; + const char *str = str_param; + + hval = 0; + while (*str != '\0') + { + hval <<= 4; + hval += (unsigned long int) *str++; + g = hval & ((unsigned long int) 0xf << (HASHWORDBITS - 4)); + if (g != 0) + { + hval ^= g >> (HASHWORDBITS - 8); + hval ^= g; + } + } + return hval; +} + + +static struct loaded_domain * +load_domain( const char *filename ) +{ + FILE *fp; + size_t size; + struct stat st; + struct mo_file_header *data = NULL; + struct loaded_domain *domain = NULL; + size_t to_read; + char *read_ptr; + + fp = fopen( filename, "rb" ); + if( !fp ) + return NULL; /* can't open the file */ + /* we must know about the size of the file */ + if( fstat( fileno(fp ), &st ) + || (size = (size_t)st.st_size) != st.st_size + || size < sizeof (struct mo_file_header) ) { + fclose( fp ); + return NULL; + } + + data = malloc( size ); + if( !data ) { + fclose( fp ); + return NULL; /* out of memory */ + } + + to_read = size; + read_ptr = (char *) data; + do { + long int nb = fread( read_ptr, 1, to_read, fp ); + if( nb < to_read ) { + fclose (fp); + free(data); + return NULL; /* read error */ + } + read_ptr += nb; + to_read -= nb; + } while( to_read > 0 ); + fclose (fp); + + /* Using the magic number we can test whether it really is a message + * catalog file. */ + if( data->magic != MAGIC && data->magic != MAGIC_SWAPPED ) { + /* The magic number is wrong: not a message catalog file. */ + free( data ); + return NULL; + } + + domain = calloc( 1, sizeof *domain ); + if( !domain ) { + free( data ); + return NULL; + } + domain->data = (char *) data; + domain->must_swap = data->magic != MAGIC; + + /* Fill in the information about the available tables. */ + switch( SWAPIT(domain->must_swap, data->revision) ) { + case 0: + domain->nstrings = SWAPIT(domain->must_swap, data->nstrings); + domain->orig_tab = (struct string_desc *) + ((char *) data + SWAPIT(domain->must_swap, data->orig_tab_offset)); + domain->trans_tab = (struct string_desc *) + ((char *) data + SWAPIT(domain->must_swap, data->trans_tab_offset)); + domain->hash_size = SWAPIT(domain->must_swap, data->hash_tab_size); + domain->hash_tab = (u32 *) + ((char *) data + SWAPIT(domain->must_swap, data->hash_tab_offset)); + break; + + default: /* This is an invalid revision. */ + free( data ); + free( domain ); + return NULL; + } + + /* allocate an array to keep track of code page mappings */ + domain->mapped = calloc( 1, domain->nstrings ); + if( !domain->mapped ) { + free( data ); + free( domain ); + return NULL; + } + + return domain; +} + + +/**************** + * Set the file used for translations. Pass a NULL to disable + * translation. A new filename may be set at anytime. + * WARNING: After changing the filename you shoudl not access any data + * retrieved by gettext(). + */ +int +set_gettext_file( const char *filename ) +{ + struct loaded_domain *domain = NULL; + + if( filename && *filename ) { + if( filename[0] == '/' + #ifdef HAVE_DRIVE_LETTERS + || ( isalpha(filename[0]) + && filename[1] == ':' + && (filename[2] == '/' || filename[2] == '\\') ) + #endif + ) { + /* absolute path - use it as is */ + domain = load_domain( filename ); + } + else { /* relative path - append ".mo" and get dir from the environment */ + char *buf = NULL; + char *dir; + + dir = read_w32_registry_string( NULL, + "Control Panel\\Mingw32\\NLS", + "MODir" ); + if( dir && (buf=malloc(strlen(dir)+strlen(filename)+1+3+1)) ) { + strcpy(stpcpy(stpcpy(stpcpy( buf, dir),"\\"), filename),".mo"); + domain = load_domain( buf ); + free(buf); + } + free(dir); + } + if( !domain ) { + return -1; } + } + if( the_domain ) { + free( the_domain->data ); + free( the_domain->mapped ); + free( the_domain ); + the_domain = NULL; + } + the_domain = domain; + return NULL; +} + + +static const char* +get_string( struct loaded_domain *domain, u32 idx ) +{ + char *p = domain->data + SWAPIT(domain->must_swap, + domain->trans_tab[idx].offset); + + /* status of domain->mapped[idx] is ignored. + * not sure about the consequences. + * perhaps mapped can entirely be removed? + */ + + /* we assume, strings are already correctly + * encoded. + */ + + return (const char*)p; +} + + + +const char * +gettext( const char *msgid ) +{ + struct loaded_domain *domain; + size_t act = 0; + size_t top, bottom; + + if( !(domain = the_domain) ) { + goto not_found; + } + + /* Locate the MSGID and its translation. */ + if( domain->hash_size > 2 && domain->hash_tab ) { + /* Use the hashing table. */ + u32 len = strlen (msgid); + u32 hash_val = hash_string (msgid); + u32 idx = hash_val % domain->hash_size; + u32 incr = 1 + (hash_val % (domain->hash_size - 2)); + u32 nstr = SWAPIT (domain->must_swap, domain->hash_tab[idx]); + + if ( !nstr ) /* Hash table entry is empty. */ + goto not_found; + + if( SWAPIT(domain->must_swap, + domain->orig_tab[nstr - 1].length) == len + && !strcmp( msgid, + domain->data + SWAPIT(domain->must_swap, + domain->orig_tab[nstr - 1].offset)) ) + return get_string( domain, nstr - 1 ); + + for(;;) { + if (idx >= domain->hash_size - incr) + idx -= domain->hash_size - incr; + else + idx += incr; + + nstr = SWAPIT(domain->must_swap, domain->hash_tab[idx]); + if( !nstr ) + goto not_found; /* Hash table entry is empty. */ + + if ( SWAPIT(domain->must_swap, + domain->orig_tab[nstr - 1].length) == len + && !strcmp (msgid, + domain->data + SWAPIT(domain->must_swap, + domain->orig_tab[nstr - 1].offset))) + return get_string( domain, nstr-1 ); + } + /* NOTREACHED */ + } + + /* Now we try the default method: binary search in the sorted + array of messages. */ + bottom = 0; + top = domain->nstrings; + while( bottom < top ) { + int cmp_val; + + act = (bottom + top) / 2; + cmp_val = strcmp(msgid, domain->data + + SWAPIT(domain->must_swap, + domain->orig_tab[act].offset)); + if (cmp_val < 0) + top = act; + else if (cmp_val > 0) + bottom = act + 1; + else + return get_string( domain, act ); + } + + not_found: + return msgid; +} + +#if 0 + unsigned int cp1, cp2; + + cp1 = GetConsoleCP(); + cp2 = GetConsoleOutputCP(); + + log_info("InputCP=%u OutputCP=%u\n", cp1, cp2 ); + + if( !SetConsoleOutputCP( 1252 ) ) + log_info("SetConsoleOutputCP failed: %d\n", (int)GetLastError() ); + + cp1 = GetConsoleCP(); + cp2 = GetConsoleOutputCP(); + log_info("InputCP=%u OutputCP=%u after switch1\n", cp1, cp2 ); +#endif + +#endif /* USE_SIMPLE_GETTEXT */ -- cgit v1.2.3