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Diffstat (limited to 'builtin-grep.c')
-rw-r--r--builtin-grep.c36
1 files changed, 32 insertions, 4 deletions
diff --git a/builtin-grep.c b/builtin-grep.c
index 52ac521..fead356 100644
--- a/builtin-grep.c
+++ b/builtin-grep.c
@@ -98,6 +98,7 @@ struct grep_opt {
unsigned unmatch_name_only:1;
unsigned count:1;
unsigned word_regexp:1;
+ unsigned fixed:1;
#define GREP_BINARY_DEFAULT 0
#define GREP_BINARY_NOMATCH 1
#define GREP_BINARY_TEXT 2
@@ -179,6 +180,20 @@ static int buffer_is_binary(const char *ptr, unsigned long size)
return 0;
}
+static int fixmatch(const char *pattern, char *line, regmatch_t *match)
+{
+ char *hit = strstr(line, pattern);
+ if (!hit) {
+ match->rm_so = match->rm_eo = -1;
+ return REG_NOMATCH;
+ }
+ else {
+ match->rm_so = hit - line;
+ match->rm_eo = match->rm_so + strlen(pattern);
+ return 0;
+ }
+}
+
static int grep_buffer(struct grep_opt *opt, const char *name,
char *buf, unsigned long size)
{
@@ -224,9 +239,14 @@ static int grep_buffer(struct grep_opt *opt, const char *name,
*eol = 0;
for (p = opt->pattern_list; p; p = p->next) {
- regex_t *exp = &p->regexp;
- hit = !regexec(exp, bol, ARRAY_SIZE(pmatch),
- pmatch, 0);
+ if (!opt->fixed) {
+ regex_t *exp = &p->regexp;
+ hit = !regexec(exp, bol, ARRAY_SIZE(pmatch),
+ pmatch, 0);
+ }
+ else {
+ hit = !fixmatch(p->pattern, bol, pmatch);
+ }
if (hit && opt->word_regexp) {
/* Match beginning must be either
@@ -549,6 +569,11 @@ int cmd_grep(int argc, const char **argv, char **envp)
opt.regflags |= REG_EXTENDED;
continue;
}
+ if (!strcmp("-F", arg) ||
+ !strcmp("--fixed-strings", arg)) {
+ opt.fixed = 1;
+ continue;
+ }
if (!strcmp("-G", arg) ||
!strcmp("--basic-regexp", arg)) {
opt.regflags &= ~REG_EXTENDED;
@@ -674,7 +699,10 @@ int cmd_grep(int argc, const char **argv, char **envp)
if (!opt.pattern_list)
die("no pattern given.");
- compile_patterns(&opt);
+ if ((opt.regflags != REG_NEWLINE) && opt.fixed)
+ die("cannot mix --fixed-strings and regexp");
+ if (!opt.fixed)
+ compile_patterns(&opt);
/* Check revs and then paths */
for (i = 1; i < argc; i++) {