tools/wrc/readres.c

   1 /*
   2  * Read a .res file and create a resource-tree
   3  *
   4  * Copyright 1998 Bertho A. Stultiens
   5  *
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <assert.h>
  12
  13 #include <config.h>
  14 #include "wrc.h"
  15 #include "readres.h"
  16 #include "newstruc.h"
  17 #include "utils.h"
  18 #include "genres.h"
  19
  20 struct resheader32 {
  21         DWORD   ressize;        /* 0 */
  22         DWORD   hdrsize;        /* 0x20 */
  23         WORD    restype1;       /* 0xffff */
  24         WORD    restype2;       /* 0 */
  25         WORD    resname1;       /* 0xffff */
  26         WORD    resname2;       /* 0 */
  27         DWORD   dversion;       /* 0 */
  28         WORD    memopt;         /* 0 */
  29         WORD    language;       /* 0 */
  30         DWORD   version;        /* 0 */
  31         DWORD   characts;       /* 0 */
  32 } emptyheader = {0, 0x20, 0xffff, 0, 0xffff, 0, 0, 0, 0, 0, 0};
  33
  34 /*
  35  *****************************************************************************
  36  * Function     :
  37  * Syntax       :
  38  * Input        :
  39  * Output       :
  40  * Description  :
  41  * Remarks      :
  42  *****************************************************************************
  43 */
  44 /*
  45  *****************************************************************************
  46  * Function     :
  47  * Syntax       :
  48  * Input        :
  49  * Output       :
  50  * Description  :
  51  * Remarks      :
  52  *****************************************************************************
  53 */
  54 /*
  55  *****************************************************************************
  56  * Function     :
  57  * Syntax       :
  58  * Input        :
  59  * Output       :
  60  * Description  :
  61  * Remarks      :
  62  *****************************************************************************
  63 */
  64 int read_data(FILE *fp, size_t size, void *buf)
  65 {
  66         int r;
  67         int pos = ftell(fp);
  68         r = fread(buf, 1, size, fp);
  69         if(r == size)
  70                 return 0;
  71         if(r == 0 && ftell(fp) - pos > 0)
  72                 return 1;
  73         else
  74                 return -1;
  75 }
  76
  77 /*
  78  *****************************************************************************
  79  * Function     :
  80  * Syntax       :
  81  * Input        :
  82  * Output       :
  83  * Description  :
  84  * Remarks      :
  85  *****************************************************************************
  86 */
  87 enum res_e res_type_from_id(name_id_t *nid)
  88 {
  89         if(nid->type == name_str)
  90                 return res_usr;
  91
  92         if(nid->type != name_ord)
  93                 internal_error(__FILE__, __LINE__, "Invalid name_id descriptor %d", nid->type);
  94
  95         switch(nid->name.i_name)
  96         {
  97         case WRC_RT_CURSOR:             return res_cur;
  98         case WRC_RT_BITMAP:             return res_bmp;
  99         case WRC_RT_ICON:               return res_ico;
 100         case WRC_RT_MENU:               return res_men;
 101         case WRC_RT_DIALOG:             return res_dlg;
 102         case WRC_RT_STRING:             return res_stt;
 103         case WRC_RT_FONTDIR:            return res_fntdir;
 104         case WRC_RT_FONT:               return res_fnt;
 105         case WRC_RT_ACCELERATOR:        return res_acc;
 106         case WRC_RT_RCDATA:             return res_rdt;
 107         case WRC_RT_MESSAGETABLE:       return res_msg;
 108         case WRC_RT_GROUP_CURSOR:       return res_curg;
 109         case WRC_RT_GROUP_ICON:         return res_icog;
 110         case WRC_RT_VERSION:            return res_ver;
 111
 112         default:
 113         case WRC_RT_DLGINCLUDE:
 114         case WRC_RT_PLUGPLAY:
 115         case WRC_RT_VXD:
 116         case WRC_RT_ANICURSOR:
 117         case WRC_RT_ANIICON:
 118                 warning("Cannot be sure of resource type, using usertype settings");
 119                 return res_usr;
 120         }
 121 }
 122
 123 /*
 124  *****************************************************************************
 125  * Function     :
 126  * Syntax       :
 127  * Input        :
 128  * Output       :
 129  * Description  :
 130  * Remarks      :
 131  *****************************************************************************
 132 */
 133 #define get_word(idx)   (*((WORD *)(&res->data[idx])))
 134 #define get_dword(idx)  (*((DWORD *)(&res->data[idx])))
 135
 136 resource_t *read_res32(FILE *fp)
 137 {
 138         static char wrong_format[] = "Wrong resfile format (32bit)";
 139         DWORD ressize;
 140         DWORD hdrsize;
 141         DWORD totsize;
 142         WORD memopt;
 143         WORD language;
 144         int err;
 145         res_t *res;
 146         resource_t *rsc;
 147         resource_t *tail = NULL;
 148         resource_t *list = NULL;
 149         name_id_t *type = NULL;
 150         name_id_t *name = NULL;
 151         int idx;
 152         enum res_e res_type;
 153         user_t *usrres;
 154
 155         while(1)
 156         {
 157                 /* Get headersize and resource size */
 158                 err = read_data(fp, sizeof(ressize), &ressize);
 159                 if(err < 0)
 160                         break;
 161                 else if(err > 0)
 162                         error(wrong_format);
 163                 err = read_data(fp, sizeof(hdrsize), &hdrsize);
 164                 if(err)
 165                         error(wrong_format);
 166
 167                 /* Align sizes and compute total size */
 168                 totsize = hdrsize;
 169                 if(hdrsize & 3)
 170                 {
 171                         warning("Hu? .res header needed alignment (anything can happen now)");
 172                         totsize += 4 - (hdrsize & 3);
 173                 }
 174                 totsize += ressize;
 175                 if(ressize & 3)
 176                         totsize += 4 - (ressize & 3);
 177
 178                 /* Read in entire data-block */
 179                 fseek(fp, -8, SEEK_CUR);
 180                 res = new_res();
 181                 if(res->allocsize < totsize)
 182                         grow_res(res, totsize - res->allocsize + 8);
 183                 err = read_data(fp, totsize, res->data);
 184                 if(err)
 185                         error(wrong_format);
 186
 187                 res->dataidx = hdrsize;
 188                 res->size = hdrsize + ressize;
 189
 190                 /* Analyse the content of the header */
 191                 idx = 8;
 192                 /* Get restype */
 193                 if(get_word(idx) == 0xffff)
 194                 {
 195                         idx += sizeof(WORD);
 196                         type = new_name_id();
 197                         type->type = name_ord;
 198                         type->name.i_name = get_word(idx);
 199                         idx += sizeof(WORD);
 200                 }
 201                 else if(get_word(idx) == 0)
 202                 {
 203                         error("ResType name has zero length (32 bit)");
 204                 }
 205                 else
 206                 {
 207                         int tag = idx;
 208                         string_t *str;
 209                         while(1)
 210                         {
 211                                 idx += sizeof(WORD);
 212                                 if(!get_word(idx))
 213                                         break;
 214                         }
 215                         idx += sizeof(WORD);
 216                         str = new_string();
 217                         str->type = str_unicode;
 218                         str->size = (idx - tag) / 2;
 219                         str->str.wstr = (short *)xmalloc(idx-tag+2);
 220                         memcpy(str->str.wstr, &res->data[tag], idx-tag);
 221                         str->str.wstr[str->size] = 0;
 222                         type = new_name_id();
 223                         type->type = name_str;
 224                         type->name.s_name = str;
 225                 }
 226                 /* Get resname */
 227                 if(get_word(idx) == 0xffff)
 228                 {
 229                         idx += sizeof(WORD);
 230                         name = new_name_id();
 231                         name->type = name_ord;
 232                         name->name.i_name = get_word(idx);
 233                         idx += sizeof(WORD);
 234                 }
 235                 else if(get_word(idx) == 0)
 236                 {
 237                         error("ResName name has zero length (32 bit)");
 238                 }
 239                 else
 240                 {
 241                         int tag = idx;
 242                         string_t *str;
 243                         while(1)
 244                         {
 245                                 idx += sizeof(WORD);
 246                                 if(!get_word(idx))
 247                                         break;
 248                         }
 249                         idx += sizeof(WORD);
 250                         str = new_string();
 251                         str->type = str_unicode;
 252                         str->size = (idx - tag) / 2;
 253                         str->str.wstr = (short *)xmalloc(idx-tag+2);
 254                         memcpy(str->str.wstr, &res->data[tag], idx-tag);
 255                         str->str.wstr[str->size] = 0;
 256                         name = new_name_id();
 257                         name->type = name_str;
 258                         name->name.s_name = str;
 259                 }
 260
 261                 /* align */
 262                 if(idx & 0x3)
 263                         idx += 4 - (idx & 3);
 264
 265                 idx += sizeof(DWORD);   /* Skip DataVersion */
 266                 memopt = get_word(idx);
 267                 idx += sizeof(WORD);
 268                 language = get_word(idx);
 269
 270                 /* Build a resource_t list */
 271                 res_type = res_type_from_id(type);
 272                 if(res_type == res_usr)
 273                 {
 274                         /* User-type has custom ResType for .[s|h] generation */
 275                         usrres = new_user(type, NULL, new_int(memopt));
 276                 }
 277                 else
 278                         usrres = NULL;
 279                 rsc = new_resource(res_type,
 280                                    usrres,
 281                                    memopt,
 282                                    new_language(PRIMARYLANGID(language),
 283                                                 SUBLANGID(language)));
 284                 rsc->binres = res;
 285                 rsc->name = name;
 286                 rsc->c_name = make_c_name(get_c_typename(res_type), name, rsc->lan);
 287                 if(!list)
 288                 {
 289                         list = rsc;
 290                         tail = rsc;
 291                 }
 292                 else
 293                 {
 294                         rsc->prev = tail;
 295                         tail->next = rsc;
 296                         tail = rsc;
 297                 }
 298         }
 299         return list;
 300 }
 301
 302 /*
 303  *****************************************************************************
 304  * Function     :
 305  * Syntax       :
 306  * Input        :
 307  * Output       :
 308  * Description  :
 309  * Remarks      :
 310  *****************************************************************************
 311 */
 312 resource_t *read_res16(FILE *fp)
 313 {
 314         internal_error(__FILE__, __LINE__, "Can't yet read 16 bit .res files");
 315         return NULL;
 316 }
 317
 318 /*
 319  *****************************************************************************
 320  * Function     : read_resfile
 321  * Syntax       : resource_t *read_resfile(char *inname)
 322  * Input        :
 323  * Output       :
 324  * Description  :
 325  * Remarks      :
 326  *****************************************************************************
 327 */
 328 resource_t *read_resfile(char *inname)
 329 {
 330         FILE *fp;
 331         struct resheader32 rh;
 332         int is32bit;
 333         resource_t *top;
 334
 335         fp = fopen(inname, "rb");
 336         if(!fp)
 337                 error("Could not open inputfile %s", inname);
 338
 339         /* Determine 16 or 32 bit .res file */
 340         if(fread(&rh, 1, sizeof(rh), fp) != sizeof(rh))
 341                 is32bit = 0;
 342         else
 343         {
 344                 if(!memcmp(&emptyheader, &rh, sizeof(rh)))
 345                         is32bit = 1;
 346                 else
 347                         is32bit = 0;
 348         }
 349
 350         if(is32bit && !win32)
 351                 error("Cannot convert 32-bit .res-file into 16-bit resources (and will, hopefully never, implement it)");
 352
 353         if(!is32bit && win32)
 354                 error("Cannot (yet) convert 16-bit .res-file into 32-bit resources");
 355
 356         if(!is32bit)
 357         {
 358                 fseek(fp, 0, SEEK_SET);
 359                 top = read_res16(fp);
 360         }
 361         else
 362         {
 363                 top = read_res32(fp);
 364         }
 365
 366         fclose(fp);
 367
 368         return top;
 369 }