2 * Implementation of the Microsoft Installer (msi.dll)
4 * Copyright 2002-2004, Mike McCormack for CodeWeavers
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include "wine/debug.h"
28 #include "wine/unicode.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(msidb);
42 typedef struct _msistring
51 UINT maxcount; /* the number of strings */
55 msistring *strings; /* an array of strings (in the tree) */
58 static UINT msistring_makehash( const WCHAR *str )
69 hash = (hash<<5) | (hash>>27);
71 return hash % HASH_SIZE;
74 string_table *msi_init_stringtable( int entries, UINT codepage )
79 st = msi_alloc( sizeof (string_table) );
84 st->strings = msi_alloc_zero( sizeof (msistring) * entries );
90 st->maxcount = entries;
92 st->codepage = codepage;
94 for( i=0; i<HASH_SIZE; i++ )
100 VOID msi_destroy_stringtable( string_table *st )
104 for( i=0; i<st->maxcount; i++ )
106 if( st->strings[i].refcount )
107 msi_free( st->strings[i].str );
109 msi_free( st->strings );
113 static int st_find_free_entry( string_table *st )
122 for( i = st->freeslot; i < st->maxcount; i++ )
123 if( !st->strings[i].refcount )
126 for( i = 1; i < st->maxcount; i++ )
127 if( !st->strings[i].refcount )
130 /* dynamically resize */
131 sz = st->maxcount + 1 + st->maxcount/2;
132 p = msi_realloc_zero( st->strings, sz*sizeof(msistring) );
136 st->freeslot = st->maxcount;
138 if( st->strings[st->freeslot].refcount )
139 ERR("oops. expected freeslot to be free...\n");
143 static void set_st_entry( string_table *st, UINT n, LPWSTR str )
145 UINT hash = msistring_makehash( str );
147 st->strings[n].refcount = 1;
148 st->strings[n].str = str;
150 st->strings[n].hash_next = st->hash[hash];
153 if( n < st->maxcount )
154 st->freeslot = n + 1;
157 int msi_addstring( string_table *st, UINT n, const CHAR *data, int len, UINT refcount )
168 if( st->strings[n].refcount )
173 if( ERROR_SUCCESS == msi_string2idA( st, data, &n ) )
175 st->strings[n].refcount++;
178 n = st_find_free_entry( st );
185 ERR("invalid index adding %s (%d)\n", debugstr_a( data ), n );
189 /* allocate a new string */
192 sz = MultiByteToWideChar( st->codepage, 0, data, len, NULL, 0 );
193 str = msi_alloc( (sz+1)*sizeof(WCHAR) );
196 MultiByteToWideChar( st->codepage, 0, data, len, str, sz );
199 set_st_entry( st, n, str );
204 int msi_addstringW( string_table *st, UINT n, const WCHAR *data, int len, UINT refcount )
208 /* TRACE("[%2d] = %s\n", string_no, debugstr_an(data,len) ); */
216 if( st->strings[n].refcount )
221 if( ERROR_SUCCESS == msi_string2idW( st, data, &n ) )
223 st->strings[n].refcount++;
226 n = st_find_free_entry( st );
233 ERR("invalid index adding %s (%d)\n", debugstr_w( data ), n );
237 /* allocate a new string */
240 TRACE("%s, n = %d len = %d\n", debugstr_w(data), n, len );
242 str = msi_alloc( (len+1)*sizeof(WCHAR) );
245 TRACE("%d\n",__LINE__);
246 memcpy( str, data, len*sizeof(WCHAR) );
249 set_st_entry( st, n, str );
254 /* find the string identified by an id - return null if there's none */
255 const WCHAR *msi_string_lookup_id( string_table *st, UINT id )
257 static const WCHAR zero[] = { 0 };
261 if( id >= st->maxcount )
264 if( id && !st->strings[id].refcount )
267 return st->strings[id].str;
273 * [in] st - pointer to the string table
274 * [in] id - id of the string to retrieve
275 * [out] buffer - destination of the string
276 * [in/out] sz - number of bytes available in the buffer on input
277 * number of bytes used on output
279 * The size includes the terminating nul character. Short buffers
280 * will be filled, but not nul terminated.
282 UINT msi_id2stringW( string_table *st, UINT id, LPWSTR buffer, UINT *sz )
287 TRACE("Finding string %d of %d\n", id, st->maxcount);
289 str = msi_string_lookup_id( st, id );
291 return ERROR_FUNCTION_FAILED;
293 len = strlenW( str ) + 1;
298 return ERROR_SUCCESS;
303 memcpy( buffer, str, (*sz)*sizeof(WCHAR) );
306 return ERROR_SUCCESS;
312 * [in] st - pointer to the string table
313 * [in] id - id of the string to retrieve
314 * [out] buffer - destination of the UTF8 string
315 * [in/out] sz - number of bytes available in the buffer on input
316 * number of bytes used on output
318 * The size includes the terminating nul character. Short buffers
319 * will be filled, but not nul terminated.
321 UINT msi_id2stringA( string_table *st, UINT id, LPSTR buffer, UINT *sz )
327 TRACE("Finding string %d of %d\n", id, st->maxcount);
329 str = msi_string_lookup_id( st, id );
331 return ERROR_FUNCTION_FAILED;
333 len = WideCharToMultiByte( st->codepage, 0, str, -1, NULL, 0, NULL, NULL );
338 return ERROR_SUCCESS;
343 n = strlenW( str ) + 1;
344 while( n && (len > *sz) )
345 len = WideCharToMultiByte( st->codepage, 0,
346 str, --n, NULL, 0, NULL, NULL );
351 *sz = WideCharToMultiByte( st->codepage, 0, str, n, buffer, len, NULL, NULL );
353 return ERROR_SUCCESS;
359 * [in] st - pointer to the string table
360 * [in] str - string to find in the string table
361 * [out] id - id of the string, if found
363 UINT msi_string2idW( string_table *st, LPCWSTR str, UINT *id )
365 UINT n, hash = msistring_makehash( str );
366 msistring *se = st->strings;
368 for (n = st->hash[hash]; n != -1; n = st->strings[n].hash_next )
370 if ((str == se[n].str) || !lstrcmpW(str, se[n].str))
373 return ERROR_SUCCESS;
377 return ERROR_INVALID_PARAMETER;
380 UINT msi_string2idA( string_table *st, LPCSTR buffer, UINT *id )
383 UINT r = ERROR_INVALID_PARAMETER;
386 TRACE("Finding string %s in string table\n", debugstr_a(buffer) );
391 return ERROR_SUCCESS;
394 sz = MultiByteToWideChar( st->codepage, 0, buffer, -1, NULL, 0 );
397 str = msi_alloc( sz*sizeof(WCHAR) );
399 return ERROR_NOT_ENOUGH_MEMORY;
400 MultiByteToWideChar( st->codepage, 0, buffer, -1, str, sz );
402 r = msi_string2idW( st, str, id );
408 UINT msi_strcmp( string_table *st, UINT lval, UINT rval, UINT *res )
410 const WCHAR *l_str, *r_str;
412 l_str = msi_string_lookup_id( st, lval );
414 return ERROR_INVALID_PARAMETER;
416 r_str = msi_string_lookup_id( st, rval );
418 return ERROR_INVALID_PARAMETER;
420 /* does this do the right thing for all UTF-8 strings? */
421 *res = strcmpW( l_str, r_str );
423 return ERROR_SUCCESS;
426 UINT msi_string_count( string_table *st )
431 UINT msi_id_refcount( string_table *st, UINT i )
433 if( i >= st->maxcount )
435 return st->strings[i].refcount;
438 UINT msi_string_totalsize( string_table *st, UINT *total )
440 UINT size = 0, i, len;
442 if( st->strings[0].str || st->strings[0].refcount )
443 ERR("oops. element 0 has a string\n");
445 for( i=1; i<st->maxcount; i++ )
447 if( st->strings[i].str )
449 TRACE("[%u] = %s\n", i, debugstr_w(st->strings[i].str));
450 len = WideCharToMultiByte( st->codepage, 0,
451 st->strings[i].str, -1, NULL, 0, NULL, NULL);
458 TRACE("%u/%u strings %u bytes codepage %x\n", *total, st->maxcount, size, st->codepage );
462 UINT msi_string_get_codepage( string_table *st )