tools/winebuild/res16.c

   1 /*
   2  * Builtin dlls resource support
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <ctype.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <stdio.h>
  13 #include <unistd.h>
  14 #include <sys/types.h>
  15 #include <fcntl.h>
  16 #include <sys/stat.h>
  17 #ifdef HAVE_SYS_MMAN_H
  18 #include <sys/mman.h>
  19 #endif
  20
  21 #include "winbase.h"
  22 #include "build.h"
  23
  24 #define ALIGNMENT 2 /* alignment for resource data */
  25 #define ALIGN_MASK ((1 << ALIGNMENT) - 1)
  26
  27 /* Unicode string or integer id */
  28 struct string_id
  29 {
  30     char  *str;  /* ptr to string */
  31     WORD   id;   /* integer id if str is NULL */
  32 };
  33
  34 /* descriptor for a resource */
  35 struct resource
  36 {
  37     struct string_id type;
  38     struct string_id name;
  39     const void      *data;
  40     unsigned int     data_size;
  41     WORD             memopt;
  42 };
  43
  44 /* type level of the resource tree */
  45 struct res_type
  46 {
  47     const struct string_id  *type;         /* type name */
  48     const struct resource   *res;          /* first resource of this type */
  49     unsigned int             nb_names;     /* total number of names */
  50 };
  51
  52 static struct resource *resources;
  53 static int nb_resources;
  54
  55 static struct res_type *res_types;
  56 static int nb_types;     /* total number of types */
  57
  58 static const unsigned char *file_pos;   /* current position in resource file */
  59 static const unsigned char *file_end;   /* end of resource file */
  60 static const char *file_name;  /* current resource file name */
  61
  62
  63 inline static struct resource *add_resource(void)
  64 {
  65     resources = xrealloc( resources, (nb_resources + 1) * sizeof(*resources) );
  66     return &resources[nb_resources++];
  67 }
  68
  69 static struct res_type *add_type( const struct resource *res )
  70 {
  71     struct res_type *type;
  72     res_types = xrealloc( res_types, (nb_types + 1) * sizeof(*res_types) );
  73     type = &res_types[nb_types++];
  74     type->type        = &res->type;
  75     type->res         = res;
  76     type->nb_names    = 0;
  77     return type;
  78 }
  79
  80 /* get the next byte from the current resource file */
  81 static WORD get_byte(void)
  82 {
  83     unsigned char ret = *file_pos++;
  84     if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
  85     return ret;
  86 }
  87
  88 /* get the next word from the current resource file */
  89 static WORD get_word(void)
  90 {
  91     /* might not be aligned */
  92 #ifdef WORDS_BIGENDIAN
  93     unsigned char high = get_byte();
  94     unsigned char low = get_byte();
  95 #else
  96     unsigned char low = get_byte();
  97     unsigned char high = get_byte();
  98 #endif
  99     return low | (high << 8);
 100 }
 101
 102 /* get the next dword from the current resource file */
 103 static DWORD get_dword(void)
 104 {
 105 #ifdef WORDS_BIGENDIAN
 106     WORD high = get_word();
 107     WORD low = get_word();
 108 #else
 109     WORD low = get_word();
 110     WORD high = get_word();
 111 #endif
 112     return low | (high << 16);
 113 }
 114
 115 /* get a string from the current resource file */
 116 static void get_string( struct string_id *str )
 117 {
 118     if (*file_pos == 0xff)
 119     {
 120         get_byte();  /* skip the 0xff */
 121         str->str = NULL;
 122         str->id = get_word();
 123     }
 124     else
 125     {
 126         char *p = xmalloc( (strlen(file_pos) + 1) );
 127         str->str = p;
 128         str->id = 0;
 129         while ((*p++ = get_byte()));
 130     }
 131 }
 132
 133 /* load the next resource from the current file */
 134 static void load_next_resource(void)
 135 {
 136     struct resource *res = add_resource();
 137
 138     get_string( &res->type );
 139     get_string( &res->name );
 140     res->memopt    = get_word();
 141     res->data_size = get_dword();
 142     res->data      = file_pos;
 143     file_pos += res->data_size;
 144     if (file_pos > file_end) fatal_error( "%s is a truncated/corrupted file\n", file_name );
 145 }
 146
 147 /* load a Win16 .res file */
 148 void load_res16_file( const char *name )
 149 {
 150     int fd;
 151     void *base;
 152     struct stat st;
 153
 154     if ((fd = open( name, O_RDONLY )) == -1) fatal_perror( "Cannot open %s", name );
 155     if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", name );
 156     if (!st.st_size) fatal_error( "%s is an empty file\n" );
 157 #ifdef  HAVE_MMAP
 158     if ((base = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1)
 159 #endif  /* HAVE_MMAP */
 160     {
 161         base = xmalloc( st.st_size );
 162         if (read( fd, base, st.st_size ) != st.st_size)
 163             fatal_error( "Cannot read %s\n", name );
 164     }
 165
 166     file_name = name;
 167     file_pos  = base;
 168     file_end  = file_pos + st.st_size;
 169     while (file_pos < file_end) load_next_resource();
 170 }
 171
 172 /* compare two strings/ids */
 173 static int cmp_string( const struct string_id *str1, const struct string_id *str2 )
 174 {
 175     if (!str1->str)
 176     {
 177         if (!str2->str) return str1->id - str2->id;
 178         return 1;  /* an id compares larger than a string */
 179     }
 180     if (!str2->str) return -1;
 181     return strcasecmp( str1->str, str2->str );
 182 }
 183
 184 /* compare two resources for sorting the resource directory */
 185 /* resources are stored first by type, then by name */
 186 static int cmp_res( const void *ptr1, const void *ptr2 )
 187 {
 188     const struct resource *res1 = ptr1;
 189     const struct resource *res2 = ptr2;
 190     int ret;
 191
 192     if ((ret = cmp_string( &res1->type, &res2->type ))) return ret;
 193     return cmp_string( &res1->name, &res2->name );
 194 }
 195
 196 /* build the 2-level (type,name) resource tree */
 197 static void build_resource_tree(void)
 198 {
 199     int i;
 200     struct res_type *type = NULL;
 201
 202     qsort( resources, nb_resources, sizeof(*resources), cmp_res );
 203
 204     for (i = 0; i < nb_resources; i++)
 205     {
 206         if (!i || cmp_string( &resources[i].type, &resources[i-1].type ))  /* new type */
 207             type = add_type( &resources[i] );
 208         type->nb_names++;
 209     }
 210 }
 211
 212 inline static void put_byte( unsigned char **buffer, unsigned char val )
 213 {
 214     *(*buffer)++ = val;
 215 }
 216
 217 inline static void put_word( unsigned char **buffer, WORD val )
 218 {
 219 #ifdef WORDS_BIGENDIAN
 220     put_byte( buffer, HIBYTE(val) );
 221     put_byte( buffer, LOBYTE(val) );
 222 #else
 223     put_byte( buffer, LOBYTE(val) );
 224     put_byte( buffer, HIBYTE(val) );
 225 #endif
 226 }
 227
 228 /* output a string preceded by its length */
 229 static void output_string( unsigned char **buffer, const char *str )
 230 {
 231     int len = strlen(str);
 232     put_byte( buffer, len );
 233     while (len--) put_byte( buffer, *str++ );
 234 }
 235
 236 /* output the resource data */
 237 int output_res16_data( FILE *outfile )
 238 {
 239     const struct resource *res;
 240     unsigned char *buffer, *p;
 241     int i, total;
 242
 243     if (!nb_resources) return 0;
 244
 245     for (i = total = 0, res = resources; i < nb_resources; i++, res++)
 246         total += (res->data_size + ALIGN_MASK) & ~ALIGN_MASK;
 247
 248     buffer = p = xmalloc( total );
 249     for (i = 0, res = resources; i < nb_resources; i++, res++)
 250     {
 251         memcpy( p, res->data, res->data_size );
 252         p += res->data_size;
 253         while ((int)p & ALIGN_MASK) *p++ = 0;
 254     }
 255     dump_bytes( outfile, buffer, total, "resource_data", 1 );
 256     free( buffer );
 257     return total;
 258 }
 259
 260 /* output the resource definitions */
 261 int output_res16_directory( unsigned char *buffer )
 262 {
 263     int i, offset, res_offset = 0;
 264     unsigned int j;
 265     const struct res_type *type;
 266     const struct resource *res;
 267     unsigned char *start = buffer;
 268
 269     build_resource_tree();
 270
 271     offset = 4;  /* alignment + terminator */
 272     offset += nb_types * 8;  /* typeinfo structures */
 273     offset += nb_resources * 12;  /* nameinfo structures */
 274
 275     put_word( &buffer, ALIGNMENT );
 276
 277     /* type and name structures */
 278
 279     for (i = 0, type = res_types; i < nb_types; i++, type++)
 280     {
 281         if (type->type->str)
 282         {
 283             put_word( &buffer, offset );
 284             offset += strlen(type->type->str) + 1;
 285         }
 286         else
 287             put_word( &buffer, type->type->id | 0x8000 );
 288
 289         put_word( &buffer, type->nb_names );
 290         put_word( &buffer, 0 );
 291         put_word( &buffer, 0 );
 292
 293         for (j = 0, res = type->res; j < type->nb_names; j++, res++)
 294         {
 295             put_word( &buffer, res_offset >> ALIGNMENT );
 296             put_word( &buffer, (res->data_size + ALIGN_MASK) >> ALIGNMENT );
 297             put_word( &buffer, res->memopt );
 298             if (res->name.str)
 299             {
 300                 put_word( &buffer, offset );
 301                 offset += strlen(res->name.str) + 1;
 302             }
 303             else
 304                 put_word( &buffer, res->name.id | 0x8000 );
 305             put_word( &buffer, 0 );
 306             put_word( &buffer, 0 );
 307             res_offset += (res->data_size + ALIGN_MASK) & ~ALIGN_MASK;
 308         }
 309     }
 310     put_word( &buffer, 0 );  /* terminator */
 311
 312     /* name strings */
 313
 314     for (i = 0, type = res_types; i < nb_types; i++, type++)
 315     {
 316         if (type->type->str) output_string( &buffer, type->type->str );
 317         for (j = 0, res = type->res; j < type->nb_names; j++, res++)
 318         {
 319             if (res->name.str) output_string( &buffer, res->name.str );
 320         }
 321     }
 322     put_byte( &buffer, 0 );  /* names terminator */
 323     if ((buffer - start) & 1) put_byte( &buffer, 0 );  /* align on word boundary */
 324
 325     return buffer - start;
 326 }