From 8f8f5476cd6542387d435c242752404cf144005f Mon Sep 17 00:00:00 2001 From: Thomas Rast Date: Mon, 19 Oct 2009 17:48:10 +0200 Subject: [PATCH] Introduce new pretty formats %g[sdD] for reflog information 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 is cached inside the commit_reflogs struct; the only allocation of it happens in read_complete_reflog(), where it is initialised to 0. Also 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. Thanks to Jeff King for reviews, the %gd testcase and documentation. Signed-off-by: Thomas Rast Signed-off-by: Junio C Hamano --- Documentation/pretty-formats.txt | 9 ++++++++ commit.h | 1 + log-tree.c | 1 + pretty.c | 17 ++++++++++++++++ reflog-walk.c | 35 +++++++++++++++++++++++++++++--- reflog-walk.h | 8 ++++++++ t/t6006-rev-list-format.sh | 18 ++++++++++++++++ 7 files changed, 86 insertions(+), 3 deletions(-) diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt index 2a845b1e5..38b990479 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 @@ -132,6 +135,12 @@ The placeholders are: - '%n': newline - '%x00': print a byte from a hex code +NOTE: Some placeholders may depend on other options given to the +revision traversal engine. For example, the `%g*` reflog options will +insert an empty string unless we are traversing reflog entries (e.g., by +`git log -g`). The `%d` placeholder will use the "short" decoration +format if `--decorate` was not already provided on the command line. + * 'tformat:' + The 'tformat:' format works exactly like 'format:', except that it diff --git a/commit.h b/commit.h index 011766dee..15cb64920 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 1675035d8..0fdf159f8 100644 --- a/log-tree.c +++ b/log-tree.c @@ -411,6 +411,7 @@ 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 d6d57ebd2..fc65fca58 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 596bafebd..caba4f743 100644 --- a/reflog-walk.c +++ b/reflog-walk.c @@ -8,6 +8,7 @@ struct complete_reflogs { char *ref; + const char *short_ref; struct reflog_info { unsigned char osha1[20], nsha1[20]; char *email; @@ -243,15 +244,26 @@ 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; + const char *printed_ref; if (!commit_reflog) return; - strbuf_addf(sb, "%s@{", commit_reflog->reflogs->ref); + if (shorten) { + if (!commit_reflog->reflogs->short_ref) + commit_reflog->reflogs->short_ref + = shorten_unambiguous_ref(commit_reflog->reflogs->ref, 0); + printed_ref = commit_reflog->reflogs->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 +275,23 @@ 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 +301,7 @@ 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 74c90964b..7bd2cd4c4 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/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh index 59d1f6283..7f61ab0e5 100755 --- a/t/t6006-rev-list-format.sh +++ b/t/t6006-rev-list-format.sh @@ -162,4 +162,22 @@ test_expect_success 'empty email' ' } ' +test_expect_success '"%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 '"%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_expect_success '%gd shortens ref name' ' + echo "master@{0}" >expect.gd-short && + git log -g -1 --format=%gd refs/heads/master >actual.gd-short && + test_cmp expect.gd-short actual.gd-short +' + test_done -- 2.30.2