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Annotation of micropolis/src/sim/w_resrc.c, revision 1.1

1.1     ! root        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  [email protected].
        !             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.%d"
        !            67: #define PERMSTR        "rb"
        !            68: #else
        !            69: #define PATHSTR        "%s/%c%c%c%c.%d"
        !            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: GetIndString(char *str, int id, short num)
        !           166: {
        !           167:   struct StringTable **tp, *st = NULL;
        !           168:   Handle h;
        !           169: 
        !           170:   tp = &StringTables;
        !           171: 
        !           172:   while (*tp) {
        !           173:     if ((*tp)->id == id) {
        !           174:       st = *tp;
        !           175:       break;
        !           176:     }
        !           177:     tp = &((*tp)->next);
        !           178:   }
        !           179:   if (!st) {
        !           180:     QUAD i, lines, size;
        !           181:     char *buf;
        !           182: 
        !           183:     st = (struct StringTable *)ckalloc(sizeof (struct StringTable));
        !           184:     st->id = id;
        !           185:     h = GetResource("stri", id);
        !           186:     size = ResourceSize(h);
        !           187:     buf = (char *)*h;
        !           188:     for (i=0, lines=0; i<size; i++)
        !           189:       if (buf[i] == '\n') {
        !           190:        buf[i] = 0;
        !           191:        lines++;
        !           192:       }
        !           193:     st->lines = lines;
        !           194:     st->strings = (char **)ckalloc(size * sizeof(char *));
        !           195:     for (i=0; i<lines; i++) {
        !           196:       st->strings[i] = buf;
        !           197:       buf += strlen(buf) + 1;
        !           198:     }
        !           199:     st->next = StringTables;
        !           200:     StringTables = st;
        !           201:   }
        !           202:   if ((num < 1) || (num > st->lines)) {
        !           203:     fprintf(stderr, "Out of range string index: %d\n", num);
        !           204:     strcpy(str, "Well I'll be a monkey's uncle!");
        !           205:   } {
        !           206:     strcpy(str, st->strings[num-1]);
        !           207:   }
        !           208: }

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