tools/winebuild/res16.c

   1 /*
   2  * Builtin dlls resource support
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <ctype.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdarg.h>
  29 #include <stdio.h>
  30 #ifdef HAVE_SYS_TYPES_H
  31 # include <sys/types.h>
  32 #endif
  33 #include <fcntl.h>
  34 #ifdef HAVE_SYS_STAT_H
  35 # include <sys/stat.h>
  36 #endif
  37 #ifdef HAVE_SYS_MMAN_H
  38 #include <sys/mman.h>
  39 #endif
  40
  41 #include "build.h"
  42
  43 /* Unicode string or integer id */
  44 struct string_id
  45 {
  46     char  *str;  /* ptr to string */
  47     unsigned short id;   /* integer id if str is NULL */
  48 };
  49
  50 /* descriptor for a resource */
  51 struct resource
  52 {
  53     struct string_id type;
  54     struct string_id name;
  55     const void      *data;
  56     unsigned int     data_size;
  57     unsigned int     memopt;
  58 };
  59
  60 /* type level of the resource tree */
  61 struct res_type
  62 {
  63     const struct string_id  *type;         /* type name */
  64     const struct resource   *res;          /* first resource of this type */
  65     unsigned int             nb_names;     /* total number of names */
  66 };
  67
  68 /* top level of the resource tree */
  69 struct res_tree
  70 {
  71     struct res_type *types;                /* types array */
  72     unsigned int     nb_types;             /* total number of types */
  73 };
  74
  75 static const unsigned char *file_pos;   /* current position in resource file */
  76 static const unsigned char *file_end;   /* end of resource file */
  77 static const char *file_name;  /* current resource file name */
  78
  79
  80 static inline struct resource *add_resource( DLLSPEC *spec )
  81 {
  82     spec->resources = xrealloc( spec->resources, (spec->nb_resources + 1) * sizeof(*spec->resources) );
  83     return &spec->resources[spec->nb_resources++];
  84 }
  85
  86 static struct res_type *add_type( struct res_tree *tree, const struct resource *res )
  87 {
  88     struct res_type *type;
  89     tree->types = xrealloc( tree->types, (tree->nb_types + 1) * sizeof(*tree->types) );
  90     type = &tree->types[tree->nb_types++];
  91     type->type        = &res->type;
  92     type->res         = res;
  93     type->nb_names    = 0;
  94     return type;
  95 }
  96
  97 /* get the next byte from the current resource file */
  98 static unsigned char get_byte(void)
  99 {
 100     unsigned char ret = *file_pos++;
 101     if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
 102     return ret;
 103 }
 104
 105 /* get the next word from the current resource file */
 106 static unsigned short get_word(void)
 107 {
 108     /* might not be aligned */
 109 #ifdef WORDS_BIGENDIAN
 110     unsigned char high = get_byte();
 111     unsigned char low = get_byte();
 112 #else
 113     unsigned char low = get_byte();
 114     unsigned char high = get_byte();
 115 #endif
 116     return low | (high << 8);
 117 }
 118
 119 /* get the next dword from the current resource file */
 120 static unsigned int get_dword(void)
 121 {
 122 #ifdef WORDS_BIGENDIAN
 123     unsigned short high = get_word();
 124     unsigned short low = get_word();
 125 #else
 126     unsigned short low = get_word();
 127     unsigned short high = get_word();
 128 #endif
 129     return low | (high << 16);
 130 }
 131
 132 /* get a string from the current resource file */
 133 static void get_string( struct string_id *str )
 134 {
 135     if (*file_pos == 0xff)
 136     {
 137         get_byte();  /* skip the 0xff */
 138         str->str = NULL;
 139         str->id = get_word();
 140     }
 141     else
 142     {
 143         char *p = xmalloc(strlen((const char *)file_pos) + 1);
 144         str->str = p;
 145         str->id = 0;
 146         while ((*p++ = get_byte()));
 147     }
 148 }
 149
 150 /* load the next resource from the current file */
 151 static void load_next_resource( DLLSPEC *spec )
 152 {
 153     struct resource *res = add_resource( spec );
 154
 155     get_string( &res->type );
 156     get_string( &res->name );
 157     res->memopt    = get_word();
 158     res->data_size = get_dword();
 159     res->data      = file_pos;
 160     file_pos += res->data_size;
 161     if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
 162 }
 163
 164 /* load a Win16 .res file */
 165 void load_res16_file( const char *name, DLLSPEC *spec )
 166 {
 167     int fd;
 168     void *base;
 169     struct stat st;
 170
 171     if ((fd = open( name, O_RDONLY )) == -1) fatal_perror( "Cannot open %s", name );
 172     if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", name );
 173     if (!st.st_size) fatal_error( "%s is an empty file\n", name );
 174 #ifdef  HAVE_MMAP
 175     if ((base = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1)
 176 #endif  /* HAVE_MMAP */
 177     {
 178         base = xmalloc( st.st_size );
 179         if (read( fd, base, st.st_size ) != st.st_size)
 180             fatal_error( "Cannot read %s\n", name );
 181     }
 182
 183     file_name = name;
 184     file_pos  = base;
 185     file_end  = file_pos + st.st_size;
 186     while (file_pos < file_end) load_next_resource( spec );
 187 }
 188
 189 /* compare two strings/ids */
 190 static int cmp_string( const struct string_id *str1, const struct string_id *str2 )
 191 {
 192     if (!str1->str)
 193     {
 194         if (!str2->str) return str1->id - str2->id;
 195         return 1;  /* an id compares larger than a string */
 196     }
 197     if (!str2->str) return -1;
 198     return strcasecmp( str1->str, str2->str );
 199 }
 200
 201 /* compare two resources for sorting the resource directory */
 202 /* resources are stored first by type, then by name */
 203 static int cmp_res( const void *ptr1, const void *ptr2 )
 204 {
 205     const struct resource *res1 = ptr1;
 206     const struct resource *res2 = ptr2;
 207     int ret;
 208
 209     if ((ret = cmp_string( &res1->type, &res2->type ))) return ret;
 210     return cmp_string( &res1->name, &res2->name );
 211 }
 212
 213 /* build the 2-level (type,name) resource tree */
 214 static struct res_tree *build_resource_tree( DLLSPEC *spec )
 215 {
 216     unsigned int i;
 217     struct res_tree *tree;
 218     struct res_type *type = NULL;
 219
 220     qsort( spec->resources, spec->nb_resources, sizeof(*spec->resources), cmp_res );
 221
 222     tree = xmalloc( sizeof(*tree) );
 223     tree->types = NULL;
 224     tree->nb_types = 0;
 225
 226     for (i = 0; i < spec->nb_resources; i++)
 227     {
 228         if (!i || cmp_string( &spec->resources[i].type, &spec->resources[i-1].type ))  /* new type */
 229             type = add_type( tree, &spec->resources[i] );
 230         type->nb_names++;
 231     }
 232     return tree;
 233 }
 234
 235 /* free the resource tree */
 236 static void free_resource_tree( struct res_tree *tree )
 237 {
 238     free( tree->types );
 239     free( tree );
 240 }
 241
 242 /* output a string preceded by its length */
 243 static void output_string( const char *str )
 244 {
 245     unsigned int i, len = strlen(str);
 246     output( "\t.byte 0x%02x", len );
 247     for (i = 0; i < len; i++) output( ",0x%02x", (unsigned char)str[i] );
 248     output( " /* %s */\n", str );
 249 }
 250
 251 /* output the resource data */
 252 void output_res16_data( DLLSPEC *spec )
 253 {
 254     const struct resource *res;
 255     unsigned int i;
 256
 257     if (!spec->nb_resources) return;
 258
 259     for (i = 0, res = spec->resources; i < spec->nb_resources; i++, res++)
 260     {
 261         output( ".L__wine_spec_resource_%u:\n", i );
 262         dump_bytes( res->data, res->data_size );
 263         output( ".L__wine_spec_resource_%u_end:\n", i );
 264     }
 265 }
 266
 267 /* output the resource definitions */
 268 void output_res16_directory( DLLSPEC *spec )
 269 {
 270     unsigned int i, j;
 271     struct res_tree *tree;
 272     const struct res_type *type;
 273     const struct resource *res;
 274
 275     tree = build_resource_tree( spec );
 276
 277     output( "\n.L__wine_spec_ne_rsrctab:\n" );
 278     output( "\t%s 0\n", get_asm_short_keyword() );  /* alignment */
 279
 280     /* type and name structures */
 281
 282     for (i = 0, type = tree->types; i < tree->nb_types; i++, type++)
 283     {
 284         if (type->type->str)
 285             output( "\t%s .L__wine_spec_restype_%u-.L__wine_spec_ne_rsrctab\n",
 286                      get_asm_short_keyword(), i );
 287         else
 288             output( "\t%s 0x%04x\n", get_asm_short_keyword(), type->type->id | 0x8000 );
 289
 290         output( "\t%s %u,0,0\n", get_asm_short_keyword(), type->nb_names );
 291
 292         for (j = 0, res = type->res; j < type->nb_names; j++, res++)
 293         {
 294             output( "\t%s .L__wine_spec_resource_%lu-.L__wine_spec_dos_header\n",
 295                      get_asm_short_keyword(), (unsigned long)(res - spec->resources) );
 296             output( "\t%s .L__wine_spec_resource_%lu_end-.L__wine_spec_resource_%lu\n",
 297                      get_asm_short_keyword(), (unsigned long)(res - spec->resources),
 298                      (unsigned long)(res - spec->resources) );
 299             output( "\t%s 0x%04x\n", get_asm_short_keyword(), res->memopt );
 300             if (res->name.str)
 301                 output( "\t%s .L__wine_spec_resname_%u_%u-.L__wine_spec_ne_rsrctab\n",
 302                          get_asm_short_keyword(), i, j );
 303             else
 304                 output( "\t%s 0x%04x\n", get_asm_short_keyword(), res->name.id | 0x8000 );
 305
 306             output( "\t%s 0,0\n", get_asm_short_keyword() );
 307         }
 308     }
 309     output( "\t%s 0\n", get_asm_short_keyword() );  /* terminator */
 310
 311     /* name strings */
 312
 313     for (i = 0, type = tree->types; i < tree->nb_types; i++, type++)
 314     {
 315         if (type->type->str)
 316         {
 317             output( ".L__wine_spec_restype_%u:\n", i );
 318             output_string( type->type->str );
 319         }
 320         for (j = 0, res = type->res; j < type->nb_names; j++, res++)
 321         {
 322             if (res->name.str)
 323             {
 324                 output( ".L__wine_spec_resname_%u_%u:\n", i, j );
 325                 output_string( res->name.str );
 326             }
 327         }
 328     }
 329     output( "\t.byte 0\n" );  /* names terminator */
 330
 331     free_resource_tree( tree );
 332 }