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Diffstat (limited to 'grep.c')
-rw-r--r--grep.c98
1 files changed, 59 insertions, 39 deletions
diff --git a/grep.c b/grep.c
index 543b1d5378..82fb349be6 100644
--- a/grep.c
+++ b/grep.c
@@ -7,6 +7,7 @@ void append_header_grep_pattern(struct grep_opt *opt, enum grep_header_field fie
{
struct grep_pat *p = xcalloc(1, sizeof(*p));
p->pattern = pat;
+ p->patternlen = strlen(pat);
p->origin = "header";
p->no = 0;
p->token = GREP_PATTERN_HEAD;
@@ -19,8 +20,15 @@ void append_header_grep_pattern(struct grep_opt *opt, enum grep_header_field fie
void append_grep_pattern(struct grep_opt *opt, const char *pat,
const char *origin, int no, enum grep_pat_token t)
{
+ append_grep_pat(opt, pat, strlen(pat), origin, no, t);
+}
+
+void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen,
+ const char *origin, int no, enum grep_pat_token t)
+{
struct grep_pat *p = xcalloc(1, sizeof(*p));
p->pattern = pat;
+ p->patternlen = patlen;
p->origin = origin;
p->no = no;
p->token = t;
@@ -44,8 +52,8 @@ struct grep_opt *grep_opt_dup(const struct grep_opt *opt)
append_header_grep_pattern(ret, pat->field,
pat->pattern);
else
- append_grep_pattern(ret, pat->pattern, pat->origin,
- pat->no, pat->token);
+ append_grep_pat(ret, pat->pattern, pat->patternlen,
+ pat->origin, pat->no, pat->token);
}
return ret;
@@ -329,14 +337,21 @@ static void show_name(struct grep_opt *opt, const char *name)
opt->output(opt, opt->null_following_name ? "\0" : "\n", 1);
}
-
-static int fixmatch(const char *pattern, char *line, int ignore_case, regmatch_t *match)
+static int fixmatch(struct grep_pat *p, char *line, char *eol,
+ regmatch_t *match)
{
char *hit;
- if (ignore_case)
- hit = strcasestr(line, pattern);
- else
- hit = strstr(line, pattern);
+
+ if (p->ignore_case) {
+ char *s = line;
+ do {
+ hit = strcasestr(s, p->pattern);
+ if (hit)
+ break;
+ s += strlen(s) + 1;
+ } while (s < eol);
+ } else
+ hit = memmem(line, eol - line, p->pattern, p->patternlen);
if (!hit) {
match->rm_so = match->rm_eo = -1;
@@ -344,11 +359,22 @@ static int fixmatch(const char *pattern, char *line, int ignore_case, regmatch_t
}
else {
match->rm_so = hit - line;
- match->rm_eo = match->rm_so + strlen(pattern);
+ match->rm_eo = match->rm_so + p->patternlen;
return 0;
}
}
+static int regmatch(const regex_t *preg, char *line, char *eol,
+ regmatch_t *match, int eflags)
+{
+#ifdef REG_STARTEND
+ match->rm_so = 0;
+ match->rm_eo = eol - line;
+ eflags |= REG_STARTEND;
+#endif
+ return regexec(preg, line, 1, match, eflags);
+}
+
static int strip_timestamp(char *bol, char **eol_p)
{
char *eol = *eol_p;
@@ -399,9 +425,9 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol,
again:
if (p->fixed)
- hit = !fixmatch(p->pattern, bol, p->ignore_case, pmatch);
+ hit = !fixmatch(p, bol, eol, pmatch);
else
- hit = !regexec(&p->regexp, bol, 1, pmatch, eflags);
+ hit = !regmatch(&p->regexp, bol, eol, pmatch, eflags);
if (hit && p->word_regexp) {
if ((pmatch[0].rm_so < 0) ||
@@ -726,16 +752,9 @@ static int look_ahead(struct grep_opt *opt,
regmatch_t m;
if (p->fixed)
- hit = !fixmatch(p->pattern, bol, p->ignore_case, &m);
- else {
-#ifdef REG_STARTEND
- m.rm_so = 0;
- m.rm_eo = *left_p;
- hit = !regexec(&p->regexp, bol, 1, &m, REG_STARTEND);
-#else
- hit = !regexec(&p->regexp, bol, 1, &m, 0);
-#endif
- }
+ hit = !fixmatch(p, bol, bol + *left_p, &m);
+ else
+ hit = !regmatch(&p->regexp, bol, bol + *left_p, &m, 0);
if (!hit || m.rm_so < 0 || m.rm_eo < 0)
continue;
if (earliest < 0 || m.rm_so < earliest)
@@ -800,17 +819,19 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
opt->show_hunk_mark = 1;
opt->last_shown = 0;
- if (buffer_is_binary(buf, size)) {
- switch (opt->binary) {
- case GREP_BINARY_DEFAULT:
+ switch (opt->binary) {
+ case GREP_BINARY_DEFAULT:
+ if (buffer_is_binary(buf, size))
binary_match_only = 1;
- break;
- case GREP_BINARY_NOMATCH:
+ break;
+ case GREP_BINARY_NOMATCH:
+ if (buffer_is_binary(buf, size))
return 0; /* Assume unmatch */
- break;
- default:
- break;
- }
+ break;
+ case GREP_BINARY_TEXT:
+ break;
+ default:
+ die("bug: unknown binary handling mode");
}
memset(&xecfg, 0, sizeof(xecfg));
@@ -871,6 +892,12 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
count++;
if (opt->status_only)
return 1;
+ if (opt->name_only) {
+ show_name(opt, name);
+ return 1;
+ }
+ if (opt->count)
+ goto next_line;
if (binary_match_only) {
opt->output(opt, "Binary file ", 12);
output_color(opt, name, strlen(name),
@@ -878,22 +905,14 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
opt->output(opt, " matches\n", 9);
return 1;
}
- if (opt->name_only) {
- show_name(opt, name);
- return 1;
- }
/* Hit at this line. If we haven't shown the
* pre-context lines, we would need to show them.
- * When asked to do "count", this still show
- * the context which is nonsense, but the user
- * deserves to get that ;-).
*/
if (opt->pre_context)
show_pre_context(opt, name, buf, bol, lno);
else if (opt->funcname)
show_funcname_line(opt, name, buf, bol, lno);
- if (!opt->count)
- show_line(opt, bol, eol, name, lno, ':');
+ show_line(opt, bol, eol, name, lno, ':');
last_hit = lno;
}
else if (last_hit &&
@@ -937,6 +956,7 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
output_sep(opt, ':');
snprintf(buf, sizeof(buf), "%u\n", count);
opt->output(opt, buf, strlen(buf));
+ return 1;
}
return !!last_hit;
}