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1.1 root 1: /*
2: * UAE - The Un*x Amiga Emulator
3: *
4: * routines to handle compressed file automatically
5: *
1.1.1.2 root 6: * (c) 1996 Samuel Devulder, Tim Gunn
1.1 root 7: */
8:
9: #include "sysconfig.h"
10: #include "sysdeps.h"
11:
12: #include "config.h"
13: #include "options.h"
14: #include "zfile.h"
15:
16: #ifdef USE_ZFILE
17:
1.1.1.2 root 18: #ifdef AMIGA
19: extern char *amiga_dev_path; /* dev: */
20: extern char *ixemul_dev_path; /* /dev/ */
1.1.1.3 root 21: extern int readdevice (const char *, char *);
1.1.1.2 root 22: #endif
23:
1.1.1.4 root 24: struct zfile
1.1 root 25: {
1.1.1.3 root 26: struct zfile *next;
27: FILE *f;
28: char name[L_tmpnam];
1.1.1.4 root 29: };
30:
31: static struct zfile *zlist = 0;
1.1 root 32:
33: /*
34: * called on exit()
35: */
1.1.1.4 root 36: void zfile_exit (void)
1.1 root 37: {
1.1.1.3 root 38: struct zfile *l;
39:
40: while ((l = zlist)) {
41: zlist = l->next;
1.1.1.4 root 42: fclose (l->f);
43: unlink (l->name); /* sam: in case unlink() after fopen() fails */
44: free (l);
1.1 root 45: }
46: }
47:
48: /*
49: * fclose() but for a compressed file
50: */
1.1.1.4 root 51: int zfile_close (FILE *f)
1.1 root 52: {
1.1.1.3 root 53: struct zfile *pl = NULL;
54: struct zfile *l = zlist;
55: int ret;
56:
1.1.1.4 root 57: while (l && l->f!=f) {
1.1.1.3 root 58: pl = l;
59: l = l->next;
60: }
1.1.1.4 root 61: if (l == 0)
62: return fclose (f);
63: ret = fclose (l->f);
64: printf ("unlink: `%s'\n", l->name);
65: unlink (l->name);
66:
1.1.1.3 root 67: if(!pl)
68: zlist = l->next;
69: else
70: pl->next = l->next;
1.1.1.4 root 71: free (l);
1.1 root 72:
1.1.1.3 root 73: return ret;
1.1 root 74: }
75:
76: /*
77: * gzip decompression
78: */
1.1.1.3 root 79: static int gunzip (const char *decompress, const char *src, const char *dst)
1.1 root 80: {
1.1.1.3 root 81: char cmd[1024];
82: if (!dst)
83: return 1;
84: sprintf (cmd, "%s -c -d %s >%s", decompress, src, dst);
85: return !system (cmd);
1.1 root 86: }
87:
88: /*
89: * lha decompression
90: */
1.1.1.3 root 91: static int lha (const char *src, const char *dst)
1.1 root 92: {
1.1.1.3 root 93: char cmd[1024];
94: if (!dst)
95: return 1;
1.1.1.2 root 96: #if defined(AMIGA)
1.1.1.3 root 97: sprintf (cmd, "lha -q -N p %s >%s", src, dst);
1.1.1.2 root 98: #else
1.1.1.3 root 99: sprintf (cmd, "lha pq %s >%s", src, dst);
1.1.1.2 root 100: #endif
1.1.1.3 root 101: return !system (cmd);
1.1.1.2 root 102: }
103:
104: /*
105: * (pk)unzip decompression
106: */
1.1.1.4 root 107: static int unzip (const char *src, const char *dst)
1.1.1.2 root 108: {
1.1.1.3 root 109: char cmd[1024];
110: if (!dst)
111: return 1;
112: #if defined AMIGA || defined __unix
113: sprintf (cmd, "unzip -p %s '*.adf' >%s", src, dst);
114: return !system (cmd);
1.1.1.2 root 115: #endif
1.1 root 116: }
117:
118: /*
119: * decompresses the file (or check if dest is null)
120: */
1.1.1.4 root 121: static int uncompress (const char *name, char *dest)
1.1 root 122: {
1.1.1.3 root 123: char *ext = strrchr (name, '.');
1.1 root 124: char nam[1024];
125:
1.1.1.3 root 126: if (ext != NULL && access (name, 0) >= 0) {
1.1 root 127: ext++;
1.1.1.3 root 128: if (strcasecmp (ext, "z") == 0
129: || strcasecmp (ext, "gz") == 0
130: || strcasecmp (ext, "adz") == 0
131: || strcasecmp (ext, "roz") == 0)
132: return gunzip ("gzip", name, dest);
133: if (strcasecmp (ext, "bz") == 0)
134: return gunzip ("bzip", name, dest);
135: if (strcasecmp (ext, "bz2") == 0)
136: return gunzip ("bzip2", name, dest);
137:
1.1.1.2 root 138: #ifndef __DOS__
1.1.1.3 root 139: if (strcasecmp (ext, "lha") == 0
140: || strcasecmp (ext, "lzh") == 0)
141: return lha (name, dest);
142: if (strcasecmp (ext, "zip") == 0)
143: return unzip (name, dest);
1.1.1.2 root 144: #endif
1.1 root 145: }
146:
1.1.1.3 root 147: if (access (strcat (strcpy (nam, name), ".z"), 0) >= 0
148: || access (strcat (strcpy (nam, name), ".Z"), 0) >= 0
149: || access (strcat (strcpy (nam, name), ".gz"), 0) >= 0
150: || access (strcat (strcpy (nam, name), ".GZ"), 0) >= 0
151: || access (strcat (strcpy (nam, name), ".adz"), 0) >= 0
152: || access (strcat (strcpy (nam, name), ".roz"), 0) >= 0)
153: return gunzip ("gzip", nam, dest);
154:
155: if (access (strcat (strcpy (nam, name), ".bz"), 0) >= 0
156: || access (strcat (strcpy (nam, name), ".BZ"), 0) >= 0)
157: return gunzip ("bzip", nam, dest);
158:
159: if (access (strcat (strcpy (nam, name), ".bz2"), 0) >= 0
160: || access (strcat (strcpy (nam, name), ".BZ2"), 0) >= 0)
161: return gunzip ("bzip2", nam, dest);
1.1 root 162:
1.1.1.2 root 163: #ifndef __DOS__
1.1.1.3 root 164: if (access (strcat (strcpy (nam, name), ".lha"), 0) >= 0
165: || access (strcat (strcpy (nam, name), ".LHA"), 0) >= 0
166: || access (strcat (strcpy (nam, name), ".lzh"), 0) >= 0
167: || access (strcat (strcpy (nam, name), ".LZH"), 0) >= 0)
168: return lha (nam, dest);
169:
170: if (access (strcat (strcpy (nam, name),".zip"),0) >= 0
171: || access (strcat (strcpy (nam, name),".ZIP"),0) >= 0)
172: return unzip (nam, dest);
1.1.1.2 root 173: #endif
174:
175: #if defined(AMIGA)
1.1.1.3 root 176: /* sam: must be before real access to work */
177: if (!strnicmp (name, ixemul_dev_path, strlen (ixemul_dev_path)))
178: return readdevice (name + strlen (ixemul_dev_path), dest);
179: if (!strnicmp (name, amiga_dev_path, strlen (amiga_dev_path)))
180: return readdevice (name + strlen (amiga_dev_path), dest);
1.1.1.2 root 181: #endif
182:
1.1 root 183: return 0;
184: }
185:
186: /*
187: * fopen() for a compressed file
188: */
1.1.1.4 root 189: FILE *zfile_open (const char *name, const char *mode)
1.1 root 190: {
191: struct zfile *l;
1.1.1.2 root 192: int fd = 0;
1.1.1.3 root 193:
1.1.1.4 root 194: if (! uncompress (name, NULL))
1.1.1.3 root 195: return fopen (name, mode);
196:
197: l = malloc (sizeof *l);
1.1.1.4 root 198: if (! l)
1.1.1.3 root 199: return NULL;
1.1 root 200:
1.1.1.4 root 201: tmpnam (l->name);
1.1.1.3 root 202:
1.1.1.4 root 203: fd = creat (l->name, S_IRUSR | S_IWUSR);
1.1 root 204: if (fd < 0)
205: return NULL;
1.1.1.3 root 206:
1.1.1.4 root 207: if (! uncompress (name, l->name)) {
1.1.1.3 root 208: close (fd);
1.1.1.4 root 209: printf ("unlink: `%s'\n", l->name);
210: unlink (l->name);
1.1.1.5 ! root 211: free (l);
1.1.1.3 root 212: return NULL;
1.1 root 213: }
214:
1.1.1.4 root 215: l->f = fopen (l->name, mode);
1.1 root 216:
217: close (fd);
1.1.1.3 root 218:
1.1 root 219: if (l->f == NULL) {
1.1.1.4 root 220: printf ("unlink: `%s'\n", l->name);
221: unlink (l->name);
222: free (l);
1.1 root 223: return NULL;
224: }
225:
226: l->next = zlist;
1.1.1.4 root 227: zlist = l;
1.1 root 228:
229: return l->f;
230: }
231:
232: #else
233:
234: /*
235: * Stubs for machines that this doesn't work on.
236: */
237:
1.1.1.4 root 238: void zfile_exit (void)
1.1 root 239: {
240: }
241:
1.1.1.4 root 242: int zfile_close (FILE *f)
1.1 root 243: {
244: return fclose(f);
245: }
246:
1.1.1.4 root 247: FILE *zfile_open (const char *name, const char *mode)
1.1 root 248: {
1.1.1.4 root 249: return fopen (name, mode);
1.1 root 250: }
251:
252: #endif
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