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1.1 root 1: /*
2: ** convert the host name on a pathalias line to lower case
3: */
4:
5: #ifndef lint
6: static char *sccsid="@(#)lcasep.c 2.5 (smail) 9/15/87";
7: #endif
8:
9: #include <stdio.h>
10: #include <ctype.h>
11:
12: # define lower(c) ( isupper(c) ? c-'A'+'a' : c )
13:
14: void exit(), perror();
15:
16: main(argc, argv)
17: int argc;
18: char *argv[];
19: {
20: FILE *ifp, *ofp;
21: char buf[BUFSIZ];
22: register char *p;
23: int c;
24:
25: extern int optind;
26: extern char *optarg;
27:
28: ifp = stdin;
29: ofp = stdout;
30:
31: while((c = getopt(argc, argv, "f:o:")) != EOF) {
32: switch(c) {
33: case 'f':
34: if((ifp = fopen(optarg, "r")) == NULL) {
35: (void) fprintf(stderr, "%s: can't open %s: ",
36: argv[0], optarg);
37: perror("");
38: exit(1);
39: }
40: break;
41: case 'o':
42: if((ofp = fopen(optarg, "w")) == NULL) {
43: (void) fprintf(stderr, "%s: can't open %s: ",
44: argv[0], optarg);
45: perror("");
46: exit(1);
47: }
48: break;
49: default:
50: (void) fprintf(stderr,
51: "usage: %s [-f file] [-o outfile]\n", argv[0]);
52: exit(1);
53: /* NOTREACHED */
54: break;
55: }
56: }
57:
58: while(fgets(buf, sizeof(buf), ifp) != NULL) {
59: for(p = buf; *p != '\t' && *p != '\0' ; p++) {
60: (void) fputc(lower(*p), ofp);
61: }
62: (void) fputs(p, ofp);
63: }
64: return(0);
65: }
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