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[micropolis] / 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.%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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