Add three new --pretty=format escapes:
%gD long reflog descriptor (e.g. refs/stash@{0})
%gd short reflog descriptor (e.g. stash@{0})
%gs reflog message
This is achieved by passing down the reflog info, if any, inside the
pretty_print_context struct.
We use the newly refactored get_reflog_selector(), and give it some
extra functionality to extract a shortened ref. The shortening has a
very simple 1-element cache, since it will usually be called with the
same ref every time. Add another helper get_reflog_message() for the
message extraction.
Note that the --format="%h %gD: %gs" tests may not work in real
repositories, as the --pretty formatter doesn't know to leave away the
": " on the last commit in an incomplete (because git-gc removed the
old part) reflog. This equivalence is nevertheless the main goal of
this patch.
Signed-off-by: Thomas Rast <trast@xxxxxxxxxxxxxxx>
---
Documentation/pretty-formats.txt | 3 +++
commit.h | 1 +
log-tree.c | 1 +
pretty.c | 17 +++++++++++++++++
reflog-walk.c | 37 ++++++++++++++++++++++++++++++++++---
reflog-walk.h | 8 ++++++++
t/t1411-reflog-show.sh | 12 ++++++++++++
7 files changed, 76 insertions(+), 3 deletions(-)
diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt
index 2a845b1..6359272 100644
--- a/Documentation/pretty-formats.txt
+++ b/Documentation/pretty-formats.txt
@@ -123,6 +123,9 @@ The placeholders are:
- '%s': subject
- '%f': sanitized subject line, suitable for a filename
- '%b': body
+- '%gD': reflog selector, e.g., `refs/stash@{1}`
+- '%gd': shortened reflog selector, e.g., `stash@{1}`
+- '%gs': reflog subject
- '%Cred': switch color to red
- '%Cgreen': switch color to green
- '%Cblue': switch color to blue
diff --git a/commit.h b/commit.h
index 011766d..15cb649 100644
--- a/commit.h
+++ b/commit.h
@@ -70,6 +70,7 @@ struct pretty_print_context
const char *after_subject;
enum date_mode date_mode;
int need_8bit_cte;
+ struct reflog_walk_info *reflog_info;
};
extern int non_ascii(int);
diff --git a/log-tree.c b/log-tree.c
index f57487f..8e782fc 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -409,6 +409,7 @@ void show_log(struct rev_info *opt)
ctx.date_mode = opt->date_mode;
ctx.abbrev = opt->diffopt.abbrev;
ctx.after_subject = extra_headers;
+ ctx.reflog_info = opt->reflog_info;
pretty_print_commit(opt->commit_format, commit, &msgbuf, &ctx);
if (opt->add_signoff)
diff --git a/pretty.c b/pretty.c
index d6d57eb..fc65fca 100644
--- a/pretty.c
+++ b/pretty.c
@@ -7,6 +7,7 @@
#include "mailmap.h"
#include "log-tree.h"
#include "color.h"
+#include "reflog-walk.h"
static char *user_format;
@@ -701,6 +702,22 @@ static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
case 'd':
format_decoration(sb, commit);
return 1;
+ case 'g': /* reflog info */
+ switch(placeholder[1]) {
+ case 'd': /* reflog selector */
+ case 'D':
+ if (c->pretty_ctx->reflog_info)
+ get_reflog_selector(sb,
+ c->pretty_ctx->reflog_info,
+ c->pretty_ctx->date_mode,
+ (placeholder[1] == 'd'));
+ return 2;
+ case 's': /* reflog message */
+ if (c->pretty_ctx->reflog_info)
+ get_reflog_message(sb, c->pretty_ctx->reflog_info);
+ return 2;
+ }
+ return 0; /* unknown %g placeholder */
}
/* For the rest we have to parse the commit header. */
diff --git a/reflog-walk.c b/reflog-walk.c
index 596bafe..6c6867b 100644
--- a/reflog-walk.c
+++ b/reflog-walk.c
@@ -243,15 +243,29 @@ void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit)
void get_reflog_selector(struct strbuf *sb,
struct reflog_walk_info *reflog_info,
- enum date_mode dmode)
+ enum date_mode dmode,
+ int shorten)
{
struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
struct reflog_info *info;
+ static const char *last_ref = NULL;
+ static char *last_short_ref = NULL;
+ const char *printed_ref;
if (!commit_reflog)
return;
- strbuf_addf(sb, "%s@{", commit_reflog->reflogs->ref);
+ if (shorten) {
+ if (last_ref != commit_reflog->reflogs->ref) {
+ free(last_short_ref);
+ last_short_ref = shorten_unambiguous_ref(commit_reflog->reflogs->ref, 0);
+ }
+ printed_ref = last_short_ref;
+ } else {
+ printed_ref = commit_reflog->reflogs->ref;
+ }
+
+ strbuf_addf(sb, "%s@{", printed_ref);
if (commit_reflog->flag || dmode) {
info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
strbuf_addstr(sb, show_date(info->timestamp, info->tz, dmode));
@@ -263,6 +277,23 @@ void get_reflog_selector(struct strbuf *sb,
strbuf_addch(sb, '}');
}
+void get_reflog_message(struct strbuf *sb,
+ struct reflog_walk_info *reflog_info)
+{
+ struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
+ struct reflog_info *info;
+ size_t len;
+
+ if (!commit_reflog)
+ return;
+
+ info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
+ len = strlen(info->message);
+ if (len > 0)
+ len--; /* strip away trailing newline */
+ strbuf_add(sb, info->message, len);
+}
+
void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
enum date_mode dmode)
{
@@ -272,7 +303,7 @@ void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
struct strbuf selector = STRBUF_INIT;
info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
- get_reflog_selector(&selector, reflog_info, dmode);
+ get_reflog_selector(&selector, reflog_info, dmode, 0);
if (oneline) {
printf("%s: %s", selector.buf, info->message);
}
diff --git a/reflog-walk.h b/reflog-walk.h
index 74c9096..7bd2cd4 100644
--- a/reflog-walk.h
+++ b/reflog-walk.h
@@ -3,6 +3,8 @@
#include "cache.h"
+struct reflog_walk_info;
+
extern void init_reflog_walk(struct reflog_walk_info** info);
extern int add_reflog_for_walk(struct reflog_walk_info *info,
struct commit *commit, const char *name);
@@ -10,5 +12,11 @@ extern void fake_reflog_parent(struct reflog_walk_info *info,
struct commit *commit);
extern void show_reflog_message(struct reflog_walk_info *info, int,
enum date_mode);
+extern void get_reflog_message(struct strbuf *sb,
+ struct reflog_walk_info *reflog_info);
+extern void get_reflog_selector(struct strbuf *sb,
+ struct reflog_walk_info *reflog_info,
+ enum date_mode dmode,
+ int shorten);
#endif
diff --git a/t/t1411-reflog-show.sh b/t/t1411-reflog-show.sh
index c18ed8e..cb8d0fd 100755
--- a/t/t1411-reflog-show.sh
+++ b/t/t1411-reflog-show.sh
@@ -64,4 +64,16 @@ test_expect_success 'using --date= shows reflog date (oneline)' '
test_cmp expect actual
'
+test_expect_success '--format="%h %gD: %gs" is same as git-reflog' '
+ git reflog >expect &&
+ git log -g --format="%h %gD: %gs" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success '--format="%h %gD: %gs" is same as git-reflog (with date)' '
+ git reflog --date=raw >expect &&
+ git log -g --format="%h %gD: %gs" --date=raw >actual &&
+ test_cmp expect actual
+'
+
test_done
--
1.6.5.18.g9f87a.dirty
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