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1.1 root 1: #include <stdio.h>
2:
3: /* For netlib's pipe f2c: check first line of input for flags:
4: * If the line has the form
5: * c$f2c -flag -flag...
6: * (with "c$f2c " starting in column 1) and no funny characters
7: * in the flags (all of which start with -), then echo "-flag -flag..."
8: * on stdout; otherwise echo nothing.
9: */
10:
11: main(argc,argv)
12: char **argv;
13: {
14: FILE *f;
15: char buf[128];
16: static char good[256];
17: int i;
18: register char *s, *s1;
19:
20: if (argc <= 1) {
21: fprintf(stderr, "%s: expected one arg: a file name\n", *argv);
22: return 1;
23: }
24: if (!(f = fopen(argv[1],"r"))) {
25: fprintf(stderr, "%s: can't open %s\n", argv[0], argv[1]);
26: return 1;
27: }
28: if (fgets(buf, sizeof(buf), f)) {
29: if (strncmp(buf, "c$f2c ", 6))
30: goto done;
31: for(i = 'a'; i <= 'z'; i++)
32: good[i] = good[i+'A'-'a'] = 1;
33: for(i = '0'; i <= '9'; i++)
34: good[i] = 1;
35: for(s = "\t -+=,.!%_\n"; *s; s++)
36: good[*s] = 1;
37: for(s = buf+6; good[*(unsigned char *)s]; s++);
38: if (*s)
39: goto done;
40: for(s = buf+5, s1 = 0;;) {
41: while(*++s == ' ');
42: if (*s != '-') {
43: if (!*s)
44: break;
45: goto done;
46: }
47: if (!s1)
48: s1 = s;
49: while(*++s != ' ')
50: if (!*s)
51: goto for_done;
52: }
53: for_done:
54: if (s1)
55: printf("%s", s1);
56: }
57: done:
58: fclose(f);
59: return 0;
60: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.