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Print header in head(1)

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sin 2014-11-20 22:51:18 +00:00
parent 2a84dd5076
commit 93c8aaf925
1 changed files with 7 additions and 1 deletions
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8
head.c
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@ -21,6 +21,7 @@ main(int argc, char *argv[])
long n = 10; long n = 10;
FILE *fp; FILE *fp;
int ret = 0; int ret = 0;
int newline, many;
ARGBEGIN { ARGBEGIN {
case 'n': case 'n':
@ -36,12 +37,17 @@ main(int argc, char *argv[])
if (argc == 0) { if (argc == 0) {
head(stdin, "<stdin>", n); head(stdin, "<stdin>", n);
} else { } else {
for (; argc > 0; argc--, argv++) { many = argc > 1;
for (newline = 0; argc > 0; argc--, argv++) {
if (!(fp = fopen(argv[0], "r"))) { if (!(fp = fopen(argv[0], "r"))) {
weprintf("fopen %s:", argv[0]); weprintf("fopen %s:", argv[0]);
ret = 1; ret = 1;
continue; continue;
} }
if (many)
printf("%s==> %s <==\n",
newline ? "\n" : "", argv[0]);
newline = 1;
head(fp, argv[0], n); head(fp, argv[0], n);
fclose(fp); fclose(fp);
} }