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authorGravatar Eric Andersen <andersen@codepoet.org>2004-05-26 11:47:55 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2004-05-26 11:47:55 +0000
commitdec7f81370071b3e4d080d14491f60ef0e5577b8 (patch)
tree7ec9e4de6a7eda529bc016b74b75074c5aa1639d /findutils
parentee70fa5523520f810f77b8a94aa1ffdbd9aff057 (diff)
downloadbusybox-dec7f81370071b3e4d080d14491f60ef0e5577b8.tar.gz
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Rick Richardson writes:
Here is a patch that adds egrep -L support (the opposite of egrep -l). I realize this is probably too late for 1.0. But I offer it for your future consideration. egrep -L is used in some networking startup scripts I inherited. -Rick
Diffstat (limited to 'findutils')
-rw-r--r--findutils/grep.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/findutils/grep.c b/findutils/grep.c
index 6ece0ab12..4e7e15920 100644
--- a/findutils/grep.c
+++ b/findutils/grep.c
@@ -34,7 +34,7 @@
/* options */
-#define GREP_OPTS "lnqvscFiHhe:f:"
+#define GREP_OPTS "lnqvscFiHhe:f:L"
#define GREP_OPT_l 1
static char print_files_with_matches;
#define GREP_OPT_n 2
@@ -55,15 +55,17 @@ static char fgrep_flag;
#define GREP_OPT_h 512
#define GREP_OPT_e 1024
#define GREP_OPT_f 2048
+#define GREP_OPT_L 4096
+static char print_files_without_matches;
#ifdef CONFIG_FEATURE_GREP_CONTEXT
#define GREP_OPT_CONTEXT "A:B:C"
-#define GREP_OPT_A 4096
-#define GREP_OPT_B 8192
-#define GREP_OPT_C 16384
-#define GREP_OPT_E 32768U
+#define GREP_OPT_A 8192
+#define GREP_OPT_B 16384
+#define GREP_OPT_C 32768
+#define GREP_OPT_E 65536
#else
#define GREP_OPT_CONTEXT ""
-#define GREP_OPT_E 4096
+#define GREP_OPT_E 8192
#endif
#ifdef CONFIG_FEATURE_GREP_EGREP_ALIAS
# define OPT_EGREP "E"
@@ -147,7 +149,7 @@ static int grep_file(FILE *file)
free(line);
/* if we found a match but were told to be quiet, stop here */
- if (be_quiet)
+ if (be_quiet || print_files_without_matches)
return -1;
/* keep track of matches */
@@ -227,6 +229,11 @@ static int grep_file(FILE *file)
puts(cur_file);
}
+ /* grep -L: print just the filename, but only if we didn't grep the line in the file */
+ if (print_files_without_matches && nmatches == 0) {
+ puts(cur_file);
+ }
+
return nmatches;
}
@@ -290,7 +297,7 @@ extern int grep_main(int argc, char **argv)
bb_error_msg_and_die("invalid context length argument");
}
/* sanity checks after parse may be invalid numbers ;-) */
- if ((opt & (GREP_OPT_c|GREP_OPT_q|GREP_OPT_l))) {
+ if ((opt & (GREP_OPT_c|GREP_OPT_q|GREP_OPT_l|GREP_OPT_L))) {
opt &= ~GREP_OPT_n;
lines_before = 0;
lines_after = 0;
@@ -305,6 +312,7 @@ extern int grep_main(int argc, char **argv)
#endif
print_files_with_matches = opt & GREP_OPT_l;
+ print_files_without_matches = (opt & GREP_OPT_L) != 0;
print_line_num = opt & GREP_OPT_n;
be_quiet = opt & GREP_OPT_q;
invert_search = (opt & GREP_OPT_v) != 0; /* 0 | 1 */