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-rw-r--r--toys/posix/head.c67
1 files changed, 32 insertions, 35 deletions
diff --git a/toys/posix/head.c b/toys/posix/head.c
index 77978f74..ba7b7385 100644
--- a/toys/posix/head.c
+++ b/toys/posix/head.c
@@ -1,6 +1,4 @@
-/* vi: set sw=4 ts=4:
- *
- * head.c - copy first lines from input to stdout.
+/* head.c - copy first lines from input to stdout.
*
* Copyright 2006 Timothy Elliott <tle@holymonkey.com>
*
@@ -9,52 +7,51 @@
USE_HEAD(NEWTOY(head, "n#<0=10", TOYFLAG_BIN))
config HEAD
- bool "head"
- default y
- help
- usage: head [-n number] [file...]
+ bool "head"
+ default y
+ help
+ usage: head [-n number] [file...]
- Copy first lines from files to stdout. If no files listed, copy from
- stdin. Filename "-" is a synonym for stdin.
+ Copy first lines from files to stdout. If no files listed, copy from
+ stdin. Filename "-" is a synonym for stdin.
- -n Number of lines to copy.
+ -n Number of lines to copy.
*/
#define FOR_head
#include "toys.h"
GLOBALS(
- long lines;
- int file_no;
+ long lines;
+ int file_no;
)
static void do_head(int fd, char *name)
{
- int i, len, lines=TT.lines, size=sizeof(toybuf);
-
- if (toys.optc > 1) {
- // Print an extra newline for all but the first file
- if (TT.file_no++) xprintf("\n");
- xprintf("==> %s <==\n", name);
- xflush();
- }
-
- while (lines) {
- len = read(fd, toybuf, size);
- if (len<0) {
- perror_msg("%s",name);
- toys.exitval = EXIT_FAILURE;
- }
- if (len<1) break;
-
- for(i=0; i<len;)
- if (toybuf[i++] == '\n' && !--lines) break;
-
- xwrite(1, toybuf, i);
- }
+ int i, len, lines=TT.lines, size=sizeof(toybuf);
+
+ if (toys.optc > 1) {
+ // Print an extra newline for all but the first file
+ if (TT.file_no++) xprintf("\n");
+ xprintf("==> %s <==\n", name);
+ xflush();
+ }
+
+ while (lines) {
+ len = read(fd, toybuf, size);
+ if (len<0) {
+ perror_msg("%s",name);
+ toys.exitval = EXIT_FAILURE;
+ }
+ if (len<1) break;
+
+ for(i=0; i<len;) if (toybuf[i++] == '\n' && !--lines) break;
+
+ xwrite(1, toybuf, i);
+ }
}
void head_main(void)
{
- loopfiles(toys.optargs, do_head);
+ loopfiles(toys.optargs, do_head);
}