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 "config.h"
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <assert.h>
  14
  15 #include "wrc.h"
  16 #include "readres.h"
  17 #include "newstruc.h"
  18 #include "utils.h"
  19 #include "genres.h"
  20
  21 struct resheader32 {
  22         DWORD   ressize;        /* 0 */
  23         DWORD   hdrsize;        /* 0x20 */
  24         WORD    restype1;       /* 0xffff */
  25         WORD    restype2;       /* 0 */
  26         WORD    resname1;       /* 0xffff */
  27         WORD    resname2;       /* 0 */
  28         DWORD   dversion;       /* 0 */
  29         WORD    memopt;         /* 0 */
  30         WORD    language;       /* 0 */
  31         DWORD   version;        /* 0 */
  32         DWORD   characts;       /* 0 */
  33 } emptyheader = {0, 0x20, 0xffff, 0, 0xffff, 0, 0, 0, 0, 0, 0};
  34
  35 /*
  36  *****************************************************************************
  37  * Function     :
  38  * Syntax       :
  39  * Input        :
  40  * Output       :
  41  * Description  :
  42  * Remarks      :
  43  *****************************************************************************
  44 */
  45 /*
  46  *****************************************************************************
  47  * Function     :
  48  * Syntax       :
  49  * Input        :
  50  * Output       :
  51  * Description  :
  52  * Remarks      :
  53  *****************************************************************************
  54 */
  55 /*
  56  *****************************************************************************
  57  * Function     :
  58  * Syntax       :
  59  * Input        :
  60  * Output       :
  61  * Description  :
  62  * Remarks      :
  63  *****************************************************************************
  64 */
  65 int read_data(FILE *fp, size_t size, void *buf)
  66 {
  67         int r;
  68         int pos = ftell(fp);
  69         r = fread(buf, 1, size, fp);
  70         if(r == size)
  71                 return 0;
  72         if(r == 0 && ftell(fp) - pos > 0)
  73                 return 1;
  74         else
  75                 return -1;
  76 }
  77
  78 /*
  79  *****************************************************************************
  80  * Function     :
  81  * Syntax       :
  82  * Input        :
  83  * Output       :
  84  * Description  :
  85  * Remarks      :
  86  *****************************************************************************
  87 */
  88 enum res_e res_type_from_id(name_id_t *nid)
  89 {
  90         if(nid->type == name_str)
  91                 return res_usr;
  92
  93         if(nid->type != name_ord)
  94                 internal_error(__FILE__, __LINE__, "Invalid name_id descriptor %d", nid->type);
  95
  96         switch(nid->name.i_name)
  97         {
  98         case WRC_RT_CURSOR:             return res_cur;
  99         case WRC_RT_BITMAP:             return res_bmp;
 100         case WRC_RT_ICON:               return res_ico;
 101         case WRC_RT_MENU:               return res_men;
 102         case WRC_RT_DIALOG:             return res_dlg;
 103         case WRC_RT_STRING:             return res_stt;
 104         case WRC_RT_FONTDIR:            return res_fntdir;
 105         case WRC_RT_FONT:               return res_fnt;
 106         case WRC_RT_ACCELERATOR:        return res_acc;
 107         case WRC_RT_RCDATA:             return res_rdt;
 108         case WRC_RT_MESSAGETABLE:       return res_msg;
 109         case WRC_RT_GROUP_CURSOR:       return res_curg;
 110         case WRC_RT_GROUP_ICON:         return res_icog;
 111         case WRC_RT_VERSION:            return res_ver;
 112         case WRC_RT_TOOLBAR:            return res_toolbar;
 113
 114         default:
 115         case WRC_RT_DLGINCLUDE:
 116         case WRC_RT_PLUGPLAY:
 117         case WRC_RT_VXD:
 118         case WRC_RT_ANICURSOR:
 119         case WRC_RT_ANIICON:
 120                 warning("Cannot be sure of resource type, using usertype settings");
 121                 return res_usr;
 122         }
 123 }
 124
 125 /*
 126  *****************************************************************************
 127  * Function     :
 128  * Syntax       :
 129  * Input        :
 130  * Output       :
 131  * Description  :
 132  * Remarks      :
 133  *****************************************************************************
 134 */
 135 #define get_word(idx)   (*((WORD *)(&res->data[idx])))
 136 #define get_dword(idx)  (*((DWORD *)(&res->data[idx])))
 137
 138 resource_t *read_res32(FILE *fp)
 139 {
 140         static char wrong_format[] = "Wrong resfile format (32bit)";
 141         DWORD ressize;
 142         DWORD hdrsize;
 143         DWORD totsize;
 144         WORD memopt;
 145         WORD language;
 146         int err;
 147         res_t *res;
 148         resource_t *rsc;
 149         resource_t *tail = NULL;
 150         resource_t *list = NULL;
 151         name_id_t *type = NULL;
 152         name_id_t *name = NULL;
 153         int idx;
 154         enum res_e res_type;
 155         user_t *usrres;
 156
 157         while(1)
 158         {
 159                 /* Get headersize and resource size */
 160                 err = read_data(fp, sizeof(ressize), &ressize);
 161                 if(err < 0)
 162                         break;
 163                 else if(err > 0)
 164                         error(wrong_format);
 165                 err = read_data(fp, sizeof(hdrsize), &hdrsize);
 166                 if(err)
 167                         error(wrong_format);
 168
 169                 /* Align sizes and compute total size */
 170                 totsize = hdrsize;
 171                 if(hdrsize & 3)
 172                 {
 173                         warning("Hu? .res header needed alignment (anything can happen now)");
 174                         totsize += 4 - (hdrsize & 3);
 175                 }
 176                 totsize += ressize;
 177                 if(ressize & 3)
 178                         totsize += 4 - (ressize & 3);
 179
 180                 /* Read in entire data-block */
 181                 fseek(fp, -8, SEEK_CUR);
 182                 res = new_res();
 183                 if(res->allocsize < totsize)
 184                         grow_res(res, totsize - res->allocsize + 8);
 185                 err = read_data(fp, totsize, res->data);
 186                 if(err)
 187                         error(wrong_format);
 188
 189                 res->dataidx = hdrsize;
 190                 res->size = hdrsize + ressize;
 191
 192                 /* Analyse the content of the header */
 193                 idx = 8;
 194                 /* Get restype */
 195                 if(get_word(idx) == 0xffff)
 196                 {
 197                         idx += sizeof(WORD);
 198                         type = new_name_id();
 199                         type->type = name_ord;
 200                         type->name.i_name = get_word(idx);
 201                         idx += sizeof(WORD);
 202                 }
 203                 else if(get_word(idx) == 0)
 204                 {
 205                         error("ResType name has zero length (32 bit)");
 206                 }
 207                 else
 208                 {
 209                         int tag = idx;
 210                         string_t *str;
 211                         while(1)
 212                         {
 213                                 idx += sizeof(WORD);
 214                                 if(!get_word(idx))
 215                                         break;
 216                         }
 217                         idx += sizeof(WORD);
 218                         str = new_string();
 219                         str->type = str_unicode;
 220                         str->size = (idx - tag) / 2;
 221                         str->str.wstr = (short *)xmalloc(idx-tag+2);
 222                         memcpy(str->str.wstr, &res->data[tag], idx-tag);
 223                         str->str.wstr[str->size] = 0;
 224                         type = new_name_id();
 225                         type->type = name_str;
 226                         type->name.s_name = str;
 227                 }
 228                 /* Get resname */
 229                 if(get_word(idx) == 0xffff)
 230                 {
 231                         idx += sizeof(WORD);
 232                         name = new_name_id();
 233                         name->type = name_ord;
 234                         name->name.i_name = get_word(idx);
 235                         idx += sizeof(WORD);
 236                 }
 237                 else if(get_word(idx) == 0)
 238                 {
 239                         error("ResName name has zero length (32 bit)");
 240                 }
 241                 else
 242                 {
 243                         int tag = idx;
 244                         string_t *str;
 245                         while(1)
 246                         {
 247                                 idx += sizeof(WORD);
 248                                 if(!get_word(idx))
 249                                         break;
 250                         }
 251                         idx += sizeof(WORD);
 252                         str = new_string();
 253                         str->type = str_unicode;
 254                         str->size = (idx - tag) / 2;
 255                         str->str.wstr = (short *)xmalloc(idx-tag+2);
 256                         memcpy(str->str.wstr, &res->data[tag], idx-tag);
 257                         str->str.wstr[str->size] = 0;
 258                         name = new_name_id();
 259                         name->type = name_str;
 260                         name->name.s_name = str;
 261                 }
 262
 263                 /* align */
 264                 if(idx & 0x3)
 265                         idx += 4 - (idx & 3);
 266
 267                 idx += sizeof(DWORD);   /* Skip DataVersion */
 268                 memopt = get_word(idx);
 269                 idx += sizeof(WORD);
 270                 language = get_word(idx);
 271
 272                 /* Build a resource_t list */
 273                 res_type = res_type_from_id(type);
 274                 if(res_type == res_usr)
 275                 {
 276                         /* User-type has custom ResType for .[s|h] generation */
 277                         usrres = new_user(type, NULL, new_int(memopt));
 278                 }
 279                 else
 280                         usrres = NULL;
 281                 rsc = new_resource(res_type,
 282                                    usrres,
 283                                    memopt,
 284                                    new_language(PRIMARYLANGID(language),
 285                                                 SUBLANGID(language)));
 286                 rsc->binres = res;
 287                 rsc->name = name;
 288                 rsc->c_name = make_c_name(get_c_typename(res_type), name, rsc->lan);
 289                 if(!list)
 290                 {
 291                         list = rsc;
 292                         tail = rsc;
 293                 }
 294                 else
 295                 {
 296                         rsc->prev = tail;
 297                         tail->next = rsc;
 298                         tail = rsc;
 299                 }
 300         }
 301         return list;
 302 }
 303
 304 /*
 305  *****************************************************************************
 306  * Function     :
 307  * Syntax       :
 308  * Input        :
 309  * Output       :
 310  * Description  :
 311  * Remarks      :
 312  *****************************************************************************
 313 */
 314 resource_t *read_res16(FILE *fp)
 315 {
 316         internal_error(__FILE__, __LINE__, "Can't yet read 16 bit .res files");
 317         return NULL;
 318 }
 319
 320 /*
 321  *****************************************************************************
 322  * Function     : read_resfile
 323  * Syntax       : resource_t *read_resfile(char *inname)
 324  * Input        :
 325  * Output       :
 326  * Description  :
 327  * Remarks      :
 328  *****************************************************************************
 329 */
 330 resource_t *read_resfile(char *inname)
 331 {
 332         FILE *fp;
 333         struct resheader32 rh;
 334         int is32bit;
 335         resource_t *top;
 336
 337         fp = fopen(inname, "rb");
 338         if(!fp)
 339                 error("Could not open inputfile %s", inname);
 340
 341         /* Determine 16 or 32 bit .res file */
 342         if(fread(&rh, 1, sizeof(rh), fp) != sizeof(rh))
 343                 is32bit = 0;
 344         else
 345         {
 346                 if(!memcmp(&emptyheader, &rh, sizeof(rh)))
 347                         is32bit = 1;
 348                 else
 349                         is32bit = 0;
 350         }
 351
 352         if(is32bit && !win32)
 353                 error("Cannot convert 32-bit .res-file into 16-bit resources (and will, hopefully never, implement it)");
 354
 355         if(!is32bit && win32)
 356                 error("Cannot (yet) convert 16-bit .res-file into 32-bit resources");
 357
 358         if(!is32bit)
 359         {
 360                 fseek(fp, 0, SEEK_SET);
 361                 top = read_res16(fp);
 362         }
 363         else
 364         {
 365                 top = read_res32(fp);
 366         }
 367
 368         fclose(fp);
 369
 370         return top;
 371 }