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pretty: Initialize notes if %N is used

When using git log --pretty='%N' without an explicit --show-notes, git
would segfault. This patches fixes this behaviour by loading the needed
notes datastructures if --pretty is used and the format contains %N.
When --pretty='%N' is used together with --no-notes, %N won't be
expanded.

This is an extension to a proposed patch by Jeff King.

Signed-off-by: Johannes Gilger <heipei@hackvalue.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent b9aa901 commit 5b16360330822527eac1fa84131d185ff784c9fb @heipei heipei committed with gitster Apr 13, 2010
Showing with 46 additions and 5 deletions.
  1. +5 −1 builtin/log.c
  2. +5 −0 commit.h
  3. +36 −4 pretty.c
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@@ -36,6 +36,7 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
{
int i;
int decoration_style = 0;
+ struct userformat_want w;
rev->abbrev = DEFAULT_ABBREV;
rev->commit_format = CMIT_FMT_DEFAULT;
@@ -58,7 +59,10 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
usage(builtin_log_usage);
argc = setup_revisions(argc, argv, rev, opt);
- if (!rev->show_notes_given && !rev->pretty_given)
+ memset(&w, 0, sizeof(w));
+ userformat_find_requirements(NULL, &w);
+
+ if (!rev->show_notes_given && (!rev->pretty_given || w.notes))
rev->show_notes = 1;
if (rev->show_notes)
init_display_notes(&rev->notes_opt);
View
@@ -74,11 +74,16 @@ struct pretty_print_context
struct reflog_walk_info *reflog_info;
};
+struct userformat_want {
+ unsigned notes:1;
+};
+
extern int has_non_ascii(const char *text);
struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */
extern char *reencode_commit_message(const struct commit *commit,
const char **encoding_p);
extern void get_commit_format(const char *arg, struct rev_info *);
+extern void userformat_find_requirements(const char *fmt, struct userformat_want *w);
extern void format_commit_message(const struct commit *commit,
const char *format, struct strbuf *sb,
const struct pretty_print_context *context);
View
@@ -775,10 +775,13 @@ static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
}
return 0; /* unknown %g placeholder */
case 'N':
- format_display_notes(commit->object.sha1, sb,
- git_log_output_encoding ? git_log_output_encoding
- : git_commit_encoding, 0);
- return 1;
+ if (c->pretty_ctx->show_notes) {
+ format_display_notes(commit->object.sha1, sb,
+ git_log_output_encoding ? git_log_output_encoding
+ : git_commit_encoding, 0);
+ return 1;
+ }
+ return 0;
}
/* For the rest we have to parse the commit header. */
@@ -855,6 +858,35 @@ static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
return consumed + 1;
}
+static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
+ void *context)
+{
+ struct userformat_want *w = context;
+
+ if (*placeholder == '+' || *placeholder == '-')
+ placeholder++;
+
+ switch (*placeholder) {
+ case 'N':
+ w->notes = 1;
+ break;
+ }
+ return 0;
+}
+
+void userformat_find_requirements(const char *fmt, struct userformat_want *w)
+{
+ struct strbuf dummy = STRBUF_INIT;
+
+ if (!fmt) {
+ if (!user_format)
+ return;
+ fmt = user_format;
+ }
+ strbuf_expand(&dummy, user_format, userformat_want_item, w);
+ strbuf_release(&dummy);
+}
+
void format_commit_message(const struct commit *commit,
const char *format, struct strbuf *sb,
const struct pretty_print_context *pretty_ctx)

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