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authorHamza Mahfooz <someguy@effective-light.com>2021-10-07 16:31:47 -0400
committerJunio C Hamano <gitster@pobox.com>2021-10-08 14:19:14 -0700
commit6a5c337922a5221d1f6d025d84e18b526df9944c (patch)
tree79a681ce03ce5028777414f382e36c99393e3093 /pretty.c
parent3f566c4e695a6df8237c34b7c1f34f0832b7e575 (diff)
downloadgit-6a5c337922a5221d1f6d025d84e18b526df9944c.tar.gz
pretty: colorize pattern matches in commit messages
The "git log" command limits its output to the commits that contain strings matched by a pattern when the "--grep=<pattern>" option is used, but unlike output from "git grep -e <pattern>", the matches are not highlighted, making them harder to spot. Teach the pretty-printer code to highlight matches from the "--grep=<pattern>", "--author=<pattern>" and "--committer=<pattern>" options (to view the last one, you may have to ask for --pretty=fuller). Also, it must be noted that we are effectively greping the content twice (because it would be a hassle to rework the existing matching code to do a /g match and then pass it all down to the coloring code), however it only slows down "git log --author=^H" on this repository by around 1-2% (compared to v2.33.0), so it should be a small enough slow down to justify the addition of the feature. Signed-off-by: Hamza Mahfooz <someguy@effective-light.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'pretty.c')
-rw-r--r--pretty.c101
1 files changed, 89 insertions, 12 deletions
diff --git a/pretty.c b/pretty.c
index 73b5ead509..2dd94af886 100644
--- a/pretty.c
+++ b/pretty.c
@@ -431,6 +431,52 @@ const char *show_ident_date(const struct ident_split *ident,
return show_date(date, tz, mode);
}
+static inline void strbuf_add_with_color(struct strbuf *sb, const char *color,
+ const char *buf, size_t buflen)
+{
+ strbuf_addstr(sb, color);
+ strbuf_add(sb, buf, buflen);
+ if (*color)
+ strbuf_addstr(sb, GIT_COLOR_RESET);
+}
+
+static void append_line_with_color(struct strbuf *sb, struct grep_opt *opt,
+ const char *line, size_t linelen,
+ int color, enum grep_context ctx,
+ enum grep_header_field field)
+{
+ const char *buf, *eol, *line_color, *match_color;
+ regmatch_t match;
+ int eflags = 0;
+
+ buf = line;
+ eol = buf + linelen;
+
+ if (!opt || !want_color(color) || opt->invert)
+ goto end;
+
+ line_color = opt->colors[GREP_COLOR_SELECTED];
+ match_color = opt->colors[GREP_COLOR_MATCH_SELECTED];
+
+ while (grep_next_match(opt, buf, eol, ctx, &match, field, eflags)) {
+ if (match.rm_so == match.rm_eo)
+ break;
+
+ strbuf_add_with_color(sb, line_color, buf, match.rm_so);
+ strbuf_add_with_color(sb, match_color, buf + match.rm_so,
+ match.rm_eo - match.rm_so);
+ buf += match.rm_eo;
+ eflags = REG_NOTBOL;
+ }
+
+ if (eflags)
+ strbuf_add_with_color(sb, line_color, buf, eol - buf);
+ else {
+end:
+ strbuf_add(sb, buf, eol - buf);
+ }
+}
+
void pp_user_info(struct pretty_print_context *pp,
const char *what, struct strbuf *sb,
const char *line, const char *encoding)
@@ -496,9 +542,26 @@ void pp_user_info(struct pretty_print_context *pp,
strbuf_addch(sb, '\n');
strbuf_addf(sb, " <%.*s>\n", (int)maillen, mailbuf);
} else {
- strbuf_addf(sb, "%s: %.*s%.*s <%.*s>\n", what,
- (pp->fmt == CMIT_FMT_FULLER) ? 4 : 0, " ",
- (int)namelen, namebuf, (int)maillen, mailbuf);
+ struct strbuf id = STRBUF_INIT;
+ enum grep_header_field field = GREP_HEADER_FIELD_MAX;
+ struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
+
+ if (!strcmp(what, "Author"))
+ field = GREP_HEADER_AUTHOR;
+ else if (!strcmp(what, "Commit"))
+ field = GREP_HEADER_COMMITTER;
+
+ strbuf_addf(sb, "%s: ", what);
+ if (pp->fmt == CMIT_FMT_FULLER)
+ strbuf_addchars(sb, ' ', 4);
+
+ strbuf_addf(&id, "%.*s <%.*s>", (int)namelen, namebuf,
+ (int)maillen, mailbuf);
+
+ append_line_with_color(sb, opt, id.buf, id.len, pp->color,
+ GREP_CONTEXT_HEAD, field);
+ strbuf_addch(sb, '\n');
+ strbuf_release(&id);
}
switch (pp->fmt) {
@@ -1939,8 +2002,9 @@ static int pp_utf8_width(const char *start, const char *end)
return width;
}
-static void strbuf_add_tabexpand(struct strbuf *sb, int tabwidth,
- const char *line, int linelen)
+static void strbuf_add_tabexpand(struct strbuf *sb, struct grep_opt *opt,
+ int color, int tabwidth, const char *line,
+ int linelen)
{
const char *tab;
@@ -1957,7 +2021,9 @@ static void strbuf_add_tabexpand(struct strbuf *sb, int tabwidth,
break;
/* Output the data .. */
- strbuf_add(sb, line, tab - line);
+ append_line_with_color(sb, opt, line, tab - line, color,
+ GREP_CONTEXT_BODY,
+ GREP_HEADER_FIELD_MAX);
/* .. and the de-tabified tab */
strbuf_addchars(sb, ' ', tabwidth - (width % tabwidth));
@@ -1972,7 +2038,8 @@ static void strbuf_add_tabexpand(struct strbuf *sb, int tabwidth,
* worrying about width - there's nothing more to
* align.
*/
- strbuf_add(sb, line, linelen);
+ append_line_with_color(sb, opt, line, linelen, color, GREP_CONTEXT_BODY,
+ GREP_HEADER_FIELD_MAX);
}
/*
@@ -1984,11 +2051,16 @@ static void pp_handle_indent(struct pretty_print_context *pp,
struct strbuf *sb, int indent,
const char *line, int linelen)
{
+ struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
+
strbuf_addchars(sb, ' ', indent);
if (pp->expand_tabs_in_log)
- strbuf_add_tabexpand(sb, pp->expand_tabs_in_log, line, linelen);
+ strbuf_add_tabexpand(sb, opt, pp->color, pp->expand_tabs_in_log,
+ line, linelen);
else
- strbuf_add(sb, line, linelen);
+ append_line_with_color(sb, opt, line, linelen, pp->color,
+ GREP_CONTEXT_BODY,
+ GREP_HEADER_FIELD_MAX);
}
static int is_mboxrd_from(const char *line, int len)
@@ -2006,7 +2078,9 @@ void pp_remainder(struct pretty_print_context *pp,
struct strbuf *sb,
int indent)
{
+ struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
int first = 1;
+
for (;;) {
const char *line = *msg_p;
int linelen = get_one_line(line);
@@ -2027,14 +2101,17 @@ void pp_remainder(struct pretty_print_context *pp,
if (indent)
pp_handle_indent(pp, sb, indent, line, linelen);
else if (pp->expand_tabs_in_log)
- strbuf_add_tabexpand(sb, pp->expand_tabs_in_log,
- line, linelen);
+ strbuf_add_tabexpand(sb, opt, pp->color,
+ pp->expand_tabs_in_log, line,
+ linelen);
else {
if (pp->fmt == CMIT_FMT_MBOXRD &&
is_mboxrd_from(line, linelen))
strbuf_addch(sb, '>');
- strbuf_add(sb, line, linelen);
+ append_line_with_color(sb, opt, line, linelen,
+ pp->color, GREP_CONTEXT_BODY,
+ GREP_HEADER_FIELD_MAX);
}
strbuf_addch(sb, '\n');
}