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authorNatanael Copa <ncopa@alpinelinux.org>2012-02-23 14:20:22 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2012-02-28 02:44:08 (GMT)
commitcd09e81520b7917adebcffd7c361671f913325eb (patch)
tree8b9bca5890d22a116511c5b098d08c6bbcd294d4
parent0b170e6a096b0d5010e29a39f3b270c3a7bc4945 (diff)
downloadbusybox-cd09e81520b7917adebcffd7c361671f913325eb.tar.gz
busybox-cd09e81520b7917adebcffd7c361671f913325eb.tar.bz2
grep: support for -x, match whole line
Specified in POSIX. http://pubs.opengroup.org/onlinepubs/009604499/utilities/grep.html Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--findutils/grep.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/findutils/grep.c b/findutils/grep.c
index 5f42242..f14d6e6 100644
--- a/findutils/grep.c
+++ b/findutils/grep.c
@@ -85,6 +85,7 @@
//usage: "\n -r Recurse"
//usage: "\n -i Ignore case"
//usage: "\n -w Match whole words only"
+//usage: "\n -x Match whole lines only"
//usage: "\n -F PATTERN is a literal (not regexp)"
//usage: IF_FEATURE_GREP_EGREP_ALIAS(
//usage: "\n -E PATTERN is an extended regexp"
@@ -113,7 +114,7 @@
//usage:#define fgrep_full_usage ""
#define OPTSTR_GREP \
- "lnqvscFiHhe:f:Lorm:w" \
+ "lnqvscFiHhe:f:Lorm:wx" \
IF_FEATURE_GREP_CONTEXT("A:B:C:") \
IF_FEATURE_GREP_EGREP_ALIAS("E") \
IF_EXTRA_COMPAT("z") \
@@ -138,6 +139,7 @@ enum {
OPTBIT_r, /* recurse dirs */
OPTBIT_m, /* -m MAX_MATCHES */
OPTBIT_w, /* -w whole word match */
+ OPTBIT_x, /* -x whole line match */
IF_FEATURE_GREP_CONTEXT( OPTBIT_A ,) /* -A NUM: after-match context */
IF_FEATURE_GREP_CONTEXT( OPTBIT_B ,) /* -B NUM: before-match context */
IF_FEATURE_GREP_CONTEXT( OPTBIT_C ,) /* -C NUM: -A and -B combined */
@@ -160,6 +162,7 @@ enum {
OPT_r = 1 << OPTBIT_r,
OPT_m = 1 << OPTBIT_m,
OPT_w = 1 << OPTBIT_w,
+ OPT_x = 1 << OPTBIT_x,
OPT_A = IF_FEATURE_GREP_CONTEXT( (1 << OPTBIT_A)) + 0,
OPT_B = IF_FEATURE_GREP_CONTEXT( (1 << OPTBIT_B)) + 0,
OPT_C = IF_FEATURE_GREP_CONTEXT( (1 << OPTBIT_C)) + 0,
@@ -370,9 +373,12 @@ static int grep_file(FILE *file)
&gl->matched_range) >= 0
#endif
) {
- if (!(option_mask32 & OPT_w))
+ if (option_mask32 & OPT_x) {
+ found = (gl->matched_range.rm_so == 0
+ && line[gl->matched_range.rm_eo] == '\0');
+ } else if (!(option_mask32 & OPT_w)) {
found = 1;
- else {
+ } else {
char c = ' ';
if (gl->matched_range.rm_so)
c = line[gl->matched_range.rm_so - 1];