git.zerfleddert.de Git - micropolis/blob - src/sim/w_resrc.c

   1 /* w_resrc.c:  Get resources (from files)
   2  *
   3  * Micropolis, Unix Version.  This game was released for the Unix platform
   4  * in or about 1990 and has been modified for inclusion in the One Laptop
   5  * Per Child program.  Copyright (C) 1989 - 2007 Electronic Arts Inc.  If
   6  * you need assistance with this program, you may contact:
   7  *   http://wiki.laptop.org/go/Micropolis  or email  micropolis@laptop.org.
   8  *
   9  * This program is free software: you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation, either version 3 of the License, or (at
  12  * your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.  You should have received a
  18  * copy of the GNU General Public License along with this program.  If
  19  * not, see <http://www.gnu.org/licenses/>.
  20  *
  21  *             ADDITIONAL TERMS per GNU GPL Section 7
  22  *
  23  * No trademark or publicity rights are granted.  This license does NOT
  24  * give you any right, title or interest in the trademark SimCity or any
  25  * other Electronic Arts trademark.  You may not distribute any
  26  * modification of this program using the trademark SimCity or claim any
  27  * affliation or association with Electronic Arts Inc. or its employees.
  28  *
  29  * Any propagation or conveyance of this program must include this
  30  * copyright notice and these terms.
  31  *
  32  * If you convey this program (or any modifications of it) and assume
  33  * contractual liability for the program to recipients of it, you agree
  34  * to indemnify Electronic Arts for any liability that those contractual
  35  * assumptions impose on Electronic Arts.
  36  *
  37  * You may not misrepresent the origins of this program; modified
  38  * versions of the program must be marked as such and not identified as
  39  * the original program.
  40  *
  41  * This disclaimer supplements the one included in the General Public
  42  * License.  TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, THIS
  43  * PROGRAM IS PROVIDED TO YOU "AS IS," WITH ALL FAULTS, WITHOUT WARRANTY
  44  * OF ANY KIND, AND YOUR USE IS AT YOUR SOLE RISK.  THE ENTIRE RISK OF
  45  * SATISFACTORY QUALITY AND PERFORMANCE RESIDES WITH YOU.  ELECTRONIC ARTS
  46  * DISCLAIMS ANY AND ALL EXPRESS, IMPLIED OR STATUTORY WARRANTIES,
  47  * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, SATISFACTORY QUALITY,
  48  * FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT OF THIRD PARTY
  49  * RIGHTS, AND WARRANTIES (IF ANY) ARISING FROM A COURSE OF DEALING,
  50  * USAGE, OR TRADE PRACTICE.  ELECTRONIC ARTS DOES NOT WARRANT AGAINST
  51  * INTERFERENCE WITH YOUR ENJOYMENT OF THE PROGRAM; THAT THE PROGRAM WILL
  52  * MEET YOUR REQUIREMENTS; THAT OPERATION OF THE PROGRAM WILL BE
  53  * UNINTERRUPTED OR ERROR-FREE, OR THAT THE PROGRAM WILL BE COMPATIBLE
  54  * WITH THIRD PARTY SOFTWARE OR THAT ANY ERRORS IN THE PROGRAM WILL BE
  55  * CORRECTED.  NO ORAL OR WRITTEN ADVICE PROVIDED BY ELECTRONIC ARTS OR
  56  * ANY AUTHORIZED REPRESENTATIVE SHALL CREATE A WARRANTY.  SOME
  57  * JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF OR LIMITATIONS ON IMPLIED
  58  * WARRANTIES OR THE LIMITATIONS ON THE APPLICABLE STATUTORY RIGHTS OF A
  59  * CONSUMER, SO SOME OR ALL OF THE ABOVE EXCLUSIONS AND LIMITATIONS MAY
  60  * NOT APPLY TO YOU.
  61  */
  62 #include "sim.h"
  63
  64
  65 #ifdef MSDOS
  66 #define PATHSTR "%s\\%c%c%c%c.%ld"
  67 #define PERMSTR "rb"
  68 #else
  69 #define PATHSTR "%s/%c%c%c%c.%ld"
  70 #define PERMSTR "r"
  71 #endif
  72
  73
  74 char *HomeDir, *ResourceDir, *KeyDir, *HostName = "";
  75
  76 struct Resource *Resources = NULL;
  77
  78 struct StringTable {
  79   QUAD id;
  80   int lines;
  81   char **strings;
  82   struct StringTable *next;
  83 } *StringTables;
  84
  85
  86 Handle GetResource(char *name, QUAD id)
  87 {
  88   struct Resource *r = Resources;
  89   char fname[256];
  90   struct stat st;
  91   FILE *fp = NULL;
  92
  93   while (r != NULL) {
  94     if ((r->id == id) &&
  95         (strncmp(r->name, name, 4) == 0)) {
  96       return ((Handle)&r->buf);
  97     }
  98     r = r->next;
  99   }
 100
 101   r = (struct Resource *)ckalloc(sizeof(struct Resource));
 102
 103   r->name[0] = name[0];
 104   r->name[1] = name[1];
 105   r->name[2] = name[2];
 106   r->name[3] = name[3];
 107   r->id = id;
 108
 109   sprintf(fname, PATHSTR, ResourceDir,
 110           r->name[0], r->name[1], r->name[2], r->name[3],
 111           r->id);
 112
 113   if ((stat(fname, &st) < 0) ||
 114       ((r->size = st.st_size) == 0) ||
 115       ((r->buf = (char *)ckalloc(r->size)) == NULL) ||
 116       ((fp = fopen(fname, PERMSTR)) == NULL) ||
 117       (fread(r->buf, sizeof(char), r->size, fp) != r->size)) {
 118     if (fp)
 119       fclose(fp);
 120     r->buf = NULL;
 121     r->size = 0;
 122     fprintf(stderr, "Can't find resource file \"%s\"!\n", fname);
 123     perror("GetResource");
 124     return(NULL);
 125   }
 126   fclose(fp);
 127   r->next = Resources; Resources = r;
 128   return ((Handle)&r->buf);
 129 }
 130
 131
 132 void
 133 ReleaseResource(Handle r)
 134 {
 135 }
 136
 137
 138 QUAD
 139 ResourceSize(Handle h)
 140 {
 141   struct Resource *r = (struct Resource *)h;
 142
 143   return (r->size);
 144 }
 145
 146
 147 char *
 148 ResourceName(Handle h)
 149 {
 150   struct Resource *r = (struct Resource *)h;
 151
 152   return (r->name);
 153 }
 154
 155
 156 QUAD
 157 ResourceID(Handle h)
 158 {
 159   struct Resource *r = (struct Resource *)h;
 160
 161   return (r->id);
 162 }
 163
 164
 165 void
 166 GetIndString(char *str, int id, short num)
 167 {
 168   struct StringTable **tp, *st = NULL;
 169   Handle h;
 170
 171   tp = &StringTables;
 172
 173   while (*tp) {
 174     if ((*tp)->id == id) {
 175       st = *tp;
 176       break;
 177     }
 178     tp = &((*tp)->next);
 179   }
 180   if (!st) {
 181     QUAD i, lines, size;
 182     char *buf;
 183
 184     st = (struct StringTable *)ckalloc(sizeof (struct StringTable));
 185     st->id = id;
 186     h = GetResource("stri", id);
 187     size = ResourceSize(h);
 188     buf = (char *)*h;
 189     for (i=0, lines=0; i<size; i++)
 190       if (buf[i] == '\n') {
 191         buf[i] = 0;
 192         lines++;
 193       }
 194     st->lines = lines;
 195     st->strings = (char **)ckalloc(size * sizeof(char *));
 196     for (i=0; i<lines; i++) {
 197       st->strings[i] = buf;
 198       buf += strlen(buf) + 1;
 199     }
 200     st->next = StringTables;
 201     StringTables = st;
 202   }
 203   if ((num < 1) || (num > st->lines)) {
 204     fprintf(stderr, "Out of range string index: %d\n", num);
 205     strcpy(str, "Well I'll be a monkey's uncle!");
 206   } {
 207     strcpy(str, st->strings[num-1]);
 208   }
 209 }