340 lines
9.3 KiB
C
340 lines
9.3 KiB
C
/*
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* Builtin dlls resource support
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*
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* Copyright 2000 Alexandre Julliard
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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 "config.h"
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#include "winbase.h"
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#include "build.h"
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#define ALIGNMENT 2 /* alignment for resource data */
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#define ALIGN_MASK ((1 << ALIGNMENT) - 1)
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/* Unicode string or integer id */
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struct string_id
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{
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char *str; /* ptr to string */
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WORD id; /* integer id if str is NULL */
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};
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/* descriptor for a resource */
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struct resource
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{
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struct string_id type;
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struct string_id name;
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const void *data;
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unsigned int data_size;
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WORD memopt;
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};
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/* type level of the resource tree */
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struct res_type
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{
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const struct string_id *type; /* type name */
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const struct resource *res; /* first resource of this type */
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unsigned int nb_names; /* total number of names */
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};
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static struct resource *resources;
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static int nb_resources;
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static struct res_type *res_types;
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static int nb_types; /* total number of types */
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static const unsigned char *file_pos; /* current position in resource file */
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static const unsigned char *file_end; /* end of resource file */
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static const char *file_name; /* current resource file name */
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inline static struct resource *add_resource(void)
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{
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resources = xrealloc( resources, (nb_resources + 1) * sizeof(*resources) );
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return &resources[nb_resources++];
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}
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static struct res_type *add_type( const struct resource *res )
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{
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struct res_type *type;
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res_types = xrealloc( res_types, (nb_types + 1) * sizeof(*res_types) );
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type = &res_types[nb_types++];
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type->type = &res->type;
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type->res = res;
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type->nb_names = 0;
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return type;
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}
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/* get the next byte from the current resource file */
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static WORD get_byte(void)
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{
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unsigned char ret = *file_pos++;
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if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
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return ret;
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}
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/* get the next word from the current resource file */
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static WORD get_word(void)
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{
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/* might not be aligned */
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#ifdef WORDS_BIGENDIAN
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unsigned char high = get_byte();
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unsigned char low = get_byte();
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#else
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unsigned char low = get_byte();
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unsigned char high = get_byte();
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#endif
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return low | (high << 8);
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}
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/* get the next dword from the current resource file */
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static DWORD get_dword(void)
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{
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#ifdef WORDS_BIGENDIAN
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WORD high = get_word();
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WORD low = get_word();
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#else
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WORD low = get_word();
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WORD high = get_word();
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#endif
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return low | (high << 16);
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}
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/* get a string from the current resource file */
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static void get_string( struct string_id *str )
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{
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if (*file_pos == 0xff)
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{
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get_byte(); /* skip the 0xff */
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str->str = NULL;
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str->id = get_word();
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}
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else
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{
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char *p = xmalloc( (strlen(file_pos) + 1) );
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str->str = p;
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str->id = 0;
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while ((*p++ = get_byte()));
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}
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}
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/* load the next resource from the current file */
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static void load_next_resource(void)
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{
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struct resource *res = add_resource();
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get_string( &res->type );
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get_string( &res->name );
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res->memopt = get_word();
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res->data_size = get_dword();
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res->data = file_pos;
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file_pos += res->data_size;
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if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
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}
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/* load a Win16 .res file */
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void load_res16_file( const char *name )
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{
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int fd;
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void *base;
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struct stat st;
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if ((fd = open( name, O_RDONLY )) == -1) fatal_perror( "Cannot open %s", name );
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if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", name );
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if (!st.st_size) fatal_error( "%s is an empty file\n" );
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#ifdef HAVE_MMAP
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if ((base = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1)
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#endif /* HAVE_MMAP */
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{
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base = xmalloc( st.st_size );
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if (read( fd, base, st.st_size ) != st.st_size)
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fatal_error( "Cannot read %s\n", name );
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}
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file_name = name;
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file_pos = base;
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file_end = file_pos + st.st_size;
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while (file_pos < file_end) load_next_resource();
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}
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/* compare two strings/ids */
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static int cmp_string( const struct string_id *str1, const struct string_id *str2 )
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{
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if (!str1->str)
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{
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if (!str2->str) return str1->id - str2->id;
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return 1; /* an id compares larger than a string */
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}
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if (!str2->str) return -1;
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return strcasecmp( str1->str, str2->str );
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}
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/* compare two resources for sorting the resource directory */
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/* resources are stored first by type, then by name */
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static int cmp_res( const void *ptr1, const void *ptr2 )
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{
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const struct resource *res1 = ptr1;
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const struct resource *res2 = ptr2;
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int ret;
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if ((ret = cmp_string( &res1->type, &res2->type ))) return ret;
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return cmp_string( &res1->name, &res2->name );
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}
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/* build the 2-level (type,name) resource tree */
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static void build_resource_tree(void)
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{
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int i;
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struct res_type *type = NULL;
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qsort( resources, nb_resources, sizeof(*resources), cmp_res );
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for (i = 0; i < nb_resources; i++)
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{
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if (!i || cmp_string( &resources[i].type, &resources[i-1].type )) /* new type */
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type = add_type( &resources[i] );
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type->nb_names++;
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}
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}
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inline static void put_byte( unsigned char **buffer, unsigned char val )
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{
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*(*buffer)++ = val;
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}
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inline static void put_word( unsigned char **buffer, WORD val )
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{
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#ifdef WORDS_BIGENDIAN
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put_byte( buffer, HIBYTE(val) );
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put_byte( buffer, LOBYTE(val) );
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#else
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put_byte( buffer, LOBYTE(val) );
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put_byte( buffer, HIBYTE(val) );
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#endif
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}
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/* output a string preceded by its length */
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static void output_string( unsigned char **buffer, const char *str )
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{
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int len = strlen(str);
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put_byte( buffer, len );
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while (len--) put_byte( buffer, *str++ );
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}
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/* output the resource data */
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int output_res16_data( FILE *outfile )
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{
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const struct resource *res;
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unsigned char *buffer, *p;
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int i, total;
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if (!nb_resources) return 0;
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for (i = total = 0, res = resources; i < nb_resources; i++, res++)
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total += (res->data_size + ALIGN_MASK) & ~ALIGN_MASK;
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buffer = p = xmalloc( total );
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for (i = 0, res = resources; i < nb_resources; i++, res++)
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{
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memcpy( p, res->data, res->data_size );
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p += res->data_size;
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while ((int)p & ALIGN_MASK) *p++ = 0;
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}
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dump_bytes( outfile, buffer, total, "resource_data", 1 );
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free( buffer );
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return total;
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}
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/* output the resource definitions */
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int output_res16_directory( unsigned char *buffer )
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{
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int i, offset, res_offset = 0;
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unsigned int j;
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const struct res_type *type;
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const struct resource *res;
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unsigned char *start = buffer;
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build_resource_tree();
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offset = 4; /* alignment + terminator */
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offset += nb_types * 8; /* typeinfo structures */
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offset += nb_resources * 12; /* nameinfo structures */
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put_word( &buffer, ALIGNMENT );
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/* type and name structures */
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for (i = 0, type = res_types; i < nb_types; i++, type++)
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{
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if (type->type->str)
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{
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put_word( &buffer, offset );
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offset += strlen(type->type->str) + 1;
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}
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else
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put_word( &buffer, type->type->id | 0x8000 );
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put_word( &buffer, type->nb_names );
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put_word( &buffer, 0 );
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put_word( &buffer, 0 );
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for (j = 0, res = type->res; j < type->nb_names; j++, res++)
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{
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put_word( &buffer, res_offset >> ALIGNMENT );
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put_word( &buffer, (res->data_size + ALIGN_MASK) >> ALIGNMENT );
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put_word( &buffer, res->memopt );
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if (res->name.str)
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{
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put_word( &buffer, offset );
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offset += strlen(res->name.str) + 1;
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}
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else
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put_word( &buffer, res->name.id | 0x8000 );
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put_word( &buffer, 0 );
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put_word( &buffer, 0 );
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res_offset += (res->data_size + ALIGN_MASK) & ~ALIGN_MASK;
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}
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}
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put_word( &buffer, 0 ); /* terminator */
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/* name strings */
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for (i = 0, type = res_types; i < nb_types; i++, type++)
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{
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if (type->type->str) output_string( &buffer, type->type->str );
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for (j = 0, res = type->res; j < type->nb_names; j++, res++)
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{
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if (res->name.str) output_string( &buffer, res->name.str );
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}
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}
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put_byte( &buffer, 0 ); /* names terminator */
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if ((buffer - start) & 1) put_byte( &buffer, 0 ); /* align on word boundary */
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return buffer - start;
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}
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