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-rw-r--r--coreutils/head.c134
1 files changed, 69 insertions, 65 deletions
diff --git a/coreutils/head.c b/coreutils/head.c
index b80d065..82a73de 100644
--- a/coreutils/head.c
+++ b/coreutils/head.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
/*
* Mini head implementation for busybox
*
@@ -26,83 +27,86 @@
#include <stdio.h>
const char head_usage[] =
-"head [OPTION] [FILE]...\n\n"
-"Print first 10 lines of each FILE to standard output.\n"
-"With more than one FILE, precede each with a header giving the\n"
-"file name. With no FILE, or when FILE is -, read standard input.\n\n"
-"Options:\n"
-"\t-n NUM\t\tPrint first NUM lines instead of first 10\n";
+ "head [OPTION] [FILE]...\n\n"
+ "Print first 10 lines of each FILE to standard output.\n"
+ "With more than one FILE, precede each with a header giving the\n"
+ "file name. With no FILE, or when FILE is -, read standard input.\n\n"
-int
-head(int len, FILE *src)
+ "Options:\n" "\t-n NUM\t\tPrint first NUM lines instead of first 10\n";
+
+int head(int len, FILE * src)
{
- int i;
- char buffer[1024];
+ int i;
+ char buffer[1024];
- for (i = 0; i < len; i++) {
- fgets(buffer, 1024, src);
- if (feof(src)) { break; }
- fputs(buffer, stdout);
- }
- return 0;
+ for (i = 0; i < len; i++) {
+ fgets(buffer, 1024, src);
+ if (feof(src)) {
+ break;
+ }
+ fputs(buffer, stdout);
+ }
+ return 0;
}
/* BusyBoxed head(1) */
-int
-head_main(int argc, char **argv)
+int head_main(int argc, char **argv)
{
- char opt;
- int len = 10, tmplen, i;
+ char opt;
+ int len = 10, tmplen, i;
- /* parse argv[] */
- for (i = 1; i < argc; i++) {
- if (argv[i][0] == '-') {
- opt = argv[i][1];
- switch (opt) {
- case 'n':
- tmplen = 0;
- if (++i < argc)
- tmplen = atoi(argv[i]);
- if (tmplen < 1)
- usage(head_usage);
- len = tmplen;
- break;
- case '-':
- case 'h':
- usage(head_usage);
- default:
- fprintf(stderr, "head: invalid option -- %c\n", opt);
- usage(head_usage);
- }
- } else {
- break;
+ /* parse argv[] */
+ for (i = 1; i < argc; i++) {
+ if (argv[i][0] == '-') {
+ opt = argv[i][1];
+ switch (opt) {
+ case 'n':
+ tmplen = 0;
+ if (++i < argc)
+ tmplen = atoi(argv[i]);
+ if (tmplen < 1)
+ usage(head_usage);
+ len = tmplen;
+ break;
+ case '-':
+ case 'h':
+ usage(head_usage);
+ default:
+ fprintf(stderr, "head: invalid option -- %c\n", opt);
+ usage(head_usage);
+ }
+ } else {
+ break;
+ }
}
- }
- /* get rest of argv[] or stdin if nothing's left */
- if (i >= argc) {
- head(len, stdin);
+ /* get rest of argv[] or stdin if nothing's left */
+ if (i >= argc) {
+ head(len, stdin);
- } else {
- int need_headers = ((argc - i) > 1);
- for ( ; i < argc; i++) {
- FILE *src;
- src = fopen(argv[i], "r");
- if (!src) {
- fprintf(stderr,"head: %s: %s\n", argv[i], strerror(errno));
- } else {
- /* emulating GNU behaviour */
- if (need_headers) {
- fprintf(stdout, "==> %s <==\n", argv[i]);
- }
- head(len, src);
- if (i < argc - 1) {
- fprintf(stdout, "\n");
+ } else {
+ int need_headers = ((argc - i) > 1);
+
+ for (; i < argc; i++) {
+ FILE *src;
+
+ src = fopen(argv[i], "r");
+ if (!src) {
+ fprintf(stderr, "head: %s: %s\n", argv[i],
+ strerror(errno));
+ } else {
+ /* emulating GNU behaviour */
+ if (need_headers) {
+ fprintf(stdout, "==> %s <==\n", argv[i]);
+ }
+ head(len, src);
+ if (i < argc - 1) {
+ fprintf(stdout, "\n");
+ }
+ }
}
- }
}
- }
- exit(0);
+ exit(0);
}
-/* $Id: head.c,v 1.7 2000/02/07 05:29:42 erik Exp $ */
+/* $Id: head.c,v 1.8 2000/02/08 19:58:47 erik Exp $ */