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authorDenys Vlasenko2013-02-25 01:24:32 +0100
committerDenys Vlasenko2013-02-25 01:24:32 +0100
commitaf0255f49681bcc78830a56af885e891eca210f4 (patch)
tree89fa748e057d2543c69205300f7614a4ef326fdf /coreutils/tail.c
parent8e6a1ea8250137d1dd9b0a37b7a1d6d596a91099 (diff)
downloadbusybox-af0255f49681bcc78830a56af885e891eca210f4.zip
busybox-af0255f49681bcc78830a56af885e891eca210f4.tar.gz
head,tail: use common suffix struct. simplify help text.
function old new delta head_tail_suffixes - 32 +32 head_main 415 406 -9 packed_usage 29252 29234 -18 tail_suffixes 32 - -32 head_suffixes 32 - -32 ------------------------------------------------------------------------------ (add/remove: 2/2 grow/shrink: 0/2 up/down: 32/-91) Total: -59 bytes text data bss dec hex filename 890474 497 7584 898555 db5fb busybox_old 890415 497 7584 898496 db5c0 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'coreutils/tail.c')
-rw-r--r--coreutils/tail.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/coreutils/tail.c b/coreutils/tail.c
index b376ec8..87251da 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -24,6 +24,9 @@
* 7) lseek attempted when count==0 even if arg was +0 (from top)
*/
+//kbuild:lib-$(CONFIG_TAIL) += tail.o
+//kbuild:lib-$(CONFIG_TAIL) += head_tail.o
+
//usage:#define tail_trivial_usage
//usage: "[OPTIONS] [FILE]..."
//usage:#define tail_full_usage "\n\n"
@@ -34,14 +37,13 @@
//usage: "\n -s SECONDS Wait SECONDS between reads with -f"
//usage: )
//usage: "\n -n N[kbm] Print last N lines"
+//usage: "\n -n +N[kbm] Skip N lines and print the rest"
//usage: IF_FEATURE_FANCY_TAIL(
-//usage: "\n -c N[kbm] Print last N bytes"
+//usage: "\n -c [+]N[kbm] Print last N bytes"
//usage: "\n -q Never print headers"
//usage: "\n -v Always print headers"
//usage: "\n"
//usage: "\nN may be suffixed by k (x1024), b (x512), or m (x1024^2)."
-//usage: "\nIf N starts with a '+', output begins with the Nth item from the start"
-//usage: "\nof each file, not from the end."
//usage: )
//usage:
//usage:#define tail_example_usage
@@ -49,13 +51,7 @@
//usage: "nameserver 10.0.0.1\n"
#include "libbb.h"
-
-static const struct suffix_mult tail_suffixes[] = {
- { "b", 512 },
- { "k", 1024 },
- { "m", 1024*1024 },
- { "", 0 }
-};
+#include "head_tail.h"
struct globals {
bool from_top;
@@ -102,7 +98,7 @@ static unsigned eat_num(const char *p)
p++;
G.from_top = 1;
}
- return xatou_sfx(p, tail_suffixes);
+ return xatou_sfx(p, head_tail_suffixes);
}
int tail_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;