457 lines
11 KiB
C
457 lines
11 KiB
C
/*
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* Implementation of the Microsoft Installer (msi.dll)
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*
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* Copyright 2002-2004, Mike McCormack for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h>
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#include <assert.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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#include "msi.h"
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#include "msiquery.h"
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#include "objbase.h"
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#include "objidl.h"
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#include "msipriv.h"
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#include "winnls.h"
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#include "query.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msidb);
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typedef struct _msistring
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{
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UINT hash;
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UINT refcount;
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LPWSTR str;
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} msistring;
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struct string_table
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{
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UINT maxcount; /* the number of strings */
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UINT freeslot;
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UINT codepage;
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msistring *strings; /* an array of strings (in the tree) */
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};
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static UINT msistring_makehash( const WCHAR *str )
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{
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UINT hash = 0;
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if (str==NULL)
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return hash;
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while( *str )
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{
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hash ^= *str++;
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hash *= 53;
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hash = (hash<<5) | (hash>>27);
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}
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return hash;
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}
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string_table *msi_init_stringtable( int entries, UINT codepage )
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{
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string_table *st;
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st = msi_alloc( sizeof (string_table) );
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if( !st )
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return NULL;
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if( entries < 1 )
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entries = 1;
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st->strings = msi_alloc_zero( sizeof (msistring) * entries );
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if( !st )
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{
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msi_free( st );
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return NULL;
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}
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st->maxcount = entries;
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st->freeslot = 1;
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st->codepage = codepage;
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return st;
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}
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VOID msi_destroy_stringtable( string_table *st )
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{
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UINT i;
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for( i=0; i<st->maxcount; i++ )
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{
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if( st->strings[i].refcount )
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msi_free( st->strings[i].str );
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}
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msi_free( st->strings );
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msi_free( st );
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}
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static int st_find_free_entry( string_table *st )
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{
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UINT i, sz;
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msistring *p;
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TRACE("%p\n", st);
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if( st->freeslot )
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{
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for( i = st->freeslot; i < st->maxcount; i++ )
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if( !st->strings[i].refcount )
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return i;
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}
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for( i = 1; i < st->maxcount; i++ )
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if( !st->strings[i].refcount )
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return i;
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/* dynamically resize */
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sz = st->maxcount + 1 + st->maxcount/2;
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p = msi_realloc_zero( st->strings, sz*sizeof(msistring) );
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if( !p )
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return -1;
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st->strings = p;
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st->freeslot = st->maxcount;
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st->maxcount = sz;
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if( st->strings[st->freeslot].refcount )
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ERR("oops. expected freeslot to be free...\n");
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return st->freeslot;
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}
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static void st_mark_entry_used( string_table *st, UINT n )
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{
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if( n >= st->maxcount )
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return;
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st->freeslot = n + 1;
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}
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int msi_addstring( string_table *st, UINT n, const CHAR *data, int len, UINT refcount )
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{
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int sz;
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if( !data )
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return 0;
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if( !data[0] )
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return 0;
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if( n > 0 )
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{
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if( st->strings[n].refcount )
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return -1;
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}
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else
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{
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if( ERROR_SUCCESS == msi_string2idA( st, data, &n ) )
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{
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st->strings[n].refcount++;
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return n;
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}
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n = st_find_free_entry( st );
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if( n < 0 )
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return -1;
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}
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if( n < 1 )
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{
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ERR("invalid index adding %s (%d)\n", debugstr_a( data ), n );
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return -1;
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}
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/* allocate a new string */
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if( len < 0 )
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len = strlen(data);
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sz = MultiByteToWideChar( st->codepage, 0, data, len, NULL, 0 );
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st->strings[n].str = msi_alloc( (sz+1)*sizeof(WCHAR) );
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if( !st->strings[n].str )
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return -1;
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MultiByteToWideChar( st->codepage, 0, data, len, st->strings[n].str, sz );
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st->strings[n].str[sz] = 0;
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st->strings[n].refcount = 1;
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st->strings[n].hash = msistring_makehash( st->strings[n].str );
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st_mark_entry_used( st, n );
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return n;
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}
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int msi_addstringW( string_table *st, UINT n, const WCHAR *data, int len, UINT refcount )
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{
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/* TRACE("[%2d] = %s\n", string_no, debugstr_an(data,len) ); */
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if( !data )
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return 0;
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if( !data[0] )
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return 0;
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if( n > 0 )
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{
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if( st->strings[n].refcount )
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return -1;
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}
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else
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{
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if( ERROR_SUCCESS == msi_string2idW( st, data, &n ) )
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{
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st->strings[n].refcount++;
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return n;
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}
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n = st_find_free_entry( st );
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if( n < 0 )
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return -1;
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}
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if( n < 1 )
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{
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ERR("invalid index adding %s (%d)\n", debugstr_w( data ), n );
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return -1;
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}
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/* allocate a new string */
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if(len<0)
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len = strlenW(data);
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TRACE("%s, n = %d len = %d\n", debugstr_w(data), n, len );
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st->strings[n].str = msi_alloc( (len+1)*sizeof(WCHAR) );
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if( !st->strings[n].str )
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return -1;
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TRACE("%d\n",__LINE__);
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memcpy( st->strings[n].str, data, len*sizeof(WCHAR) );
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st->strings[n].str[len] = 0;
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st->strings[n].refcount = 1;
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st->strings[n].hash = msistring_makehash( st->strings[n].str );
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st_mark_entry_used( st, n );
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return n;
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}
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/* find the string identified by an id - return null if there's none */
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const WCHAR *msi_string_lookup_id( string_table *st, UINT id )
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{
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static const WCHAR zero[] = { 0 };
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if( id == 0 )
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return zero;
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if( id >= st->maxcount )
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return NULL;
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if( id && !st->strings[id].refcount )
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return NULL;
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return st->strings[id].str;
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}
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/*
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* msi_id2stringW
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*
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* [in] st - pointer to the string table
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* [in] id - id of the string to retrieve
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* [out] buffer - destination of the string
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* [in/out] sz - number of bytes available in the buffer on input
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* number of bytes used on output
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*
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* The size includes the terminating nul character. Short buffers
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* will be filled, but not nul terminated.
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*/
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UINT msi_id2stringW( string_table *st, UINT id, LPWSTR buffer, UINT *sz )
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{
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UINT len;
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const WCHAR *str;
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TRACE("Finding string %d of %d\n", id, st->maxcount);
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str = msi_string_lookup_id( st, id );
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if( !str )
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return ERROR_FUNCTION_FAILED;
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len = strlenW( str ) + 1;
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if( !buffer )
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{
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*sz = len;
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return ERROR_SUCCESS;
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}
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if( *sz < len )
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*sz = len;
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memcpy( buffer, str, (*sz)*sizeof(WCHAR) );
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*sz = len;
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return ERROR_SUCCESS;
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}
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/*
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* msi_id2stringA
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*
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* [in] st - pointer to the string table
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* [in] id - id of the string to retrieve
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* [out] buffer - destination of the UTF8 string
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* [in/out] sz - number of bytes available in the buffer on input
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* number of bytes used on output
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*
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* The size includes the terminating nul character. Short buffers
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* will be filled, but not nul terminated.
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*/
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UINT msi_id2stringA( string_table *st, UINT id, LPSTR buffer, UINT *sz )
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{
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UINT len;
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const WCHAR *str;
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int n;
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TRACE("Finding string %d of %d\n", id, st->maxcount);
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str = msi_string_lookup_id( st, id );
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if( !str )
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return ERROR_FUNCTION_FAILED;
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len = WideCharToMultiByte( st->codepage, 0, str, -1, NULL, 0, NULL, NULL );
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if( !buffer )
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{
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*sz = len;
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return ERROR_SUCCESS;
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}
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if( len > *sz )
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{
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n = strlenW( str ) + 1;
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while( n && (len > *sz) )
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len = WideCharToMultiByte( st->codepage, 0,
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str, --n, NULL, 0, NULL, NULL );
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}
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else
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n = -1;
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*sz = WideCharToMultiByte( st->codepage, 0, str, n, buffer, len, NULL, NULL );
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return ERROR_SUCCESS;
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}
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/*
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* msi_string2idW
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*
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* [in] st - pointer to the string table
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* [in] str - string to find in the string table
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* [out] id - id of the string, if found
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*/
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UINT msi_string2idW( string_table *st, LPCWSTR str, UINT *id )
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{
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UINT hash;
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UINT i, r = ERROR_INVALID_PARAMETER;
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hash = msistring_makehash( str );
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for( i=0; i<st->maxcount; i++ )
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{
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if ( (str == NULL && st->strings[i].str == NULL) ||
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( ( st->strings[i].hash == hash ) &&
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!strcmpW( st->strings[i].str, str ) ))
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{
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r = ERROR_SUCCESS;
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*id = i;
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break;
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}
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}
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return r;
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}
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UINT msi_string2idA( string_table *st, LPCSTR buffer, UINT *id )
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{
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DWORD sz;
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UINT r = ERROR_INVALID_PARAMETER;
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LPWSTR str;
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TRACE("Finding string %s in string table\n", debugstr_a(buffer) );
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if( buffer[0] == 0 )
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{
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*id = 0;
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return ERROR_SUCCESS;
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}
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sz = MultiByteToWideChar( st->codepage, 0, buffer, -1, NULL, 0 );
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if( sz <= 0 )
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return r;
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str = msi_alloc( sz*sizeof(WCHAR) );
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if( !str )
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return ERROR_NOT_ENOUGH_MEMORY;
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MultiByteToWideChar( st->codepage, 0, buffer, -1, str, sz );
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r = msi_string2idW( st, str, id );
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msi_free( str );
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return r;
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}
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UINT msi_strcmp( string_table *st, UINT lval, UINT rval, UINT *res )
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{
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const WCHAR *l_str, *r_str;
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l_str = msi_string_lookup_id( st, lval );
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if( !l_str )
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return ERROR_INVALID_PARAMETER;
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r_str = msi_string_lookup_id( st, rval );
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if( !r_str )
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return ERROR_INVALID_PARAMETER;
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/* does this do the right thing for all UTF-8 strings? */
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*res = strcmpW( l_str, r_str );
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return ERROR_SUCCESS;
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}
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UINT msi_string_count( string_table *st )
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{
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return st->maxcount;
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}
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UINT msi_id_refcount( string_table *st, UINT i )
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{
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if( i >= st->maxcount )
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return 0;
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return st->strings[i].refcount;
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}
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UINT msi_string_totalsize( string_table *st, UINT *total )
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{
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UINT size = 0, i, len;
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if( st->strings[0].str || st->strings[0].refcount )
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ERR("oops. element 0 has a string\n");
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*total = 0;
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for( i=1; i<st->maxcount; i++ )
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{
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if( st->strings[i].str )
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{
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TRACE("[%u] = %s\n", i, debugstr_w(st->strings[i].str));
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len = WideCharToMultiByte( st->codepage, 0,
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st->strings[i].str, -1, NULL, 0, NULL, NULL);
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if( len )
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len--;
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size += len;
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*total = (i+1);
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}
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}
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TRACE("%u/%u strings %u bytes codepage %x\n", *total, st->maxcount, size, st->codepage );
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return size;
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}
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UINT msi_string_get_codepage( string_table *st )
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{
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return st->codepage;
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}
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