This patch moves around some code from run_commit to prepare_log_message.
This simplifies a little the code for the next patch. The biggest change
is that the editor and the commit-msg hook are invoked before building
the prolog of the commit object.
This means that: 1) the commit may be aborted after editing the message
if there is a problem writing out the tree object (slight disadvantage);
2) no tree will be written out if the commit-msg hook fails (slight
advantage).
Signed-off-by: Paolo Bonzini <bonzini@gnu.org>
---
builtin-commit.c | 114 ++++++++++++++++++++++++++++---------------------------
1 files changed, 60 insertions(+), 54 deletions(-)
diff --git a/builtin-commit.c b/builtin-commit.c
index 955cc84..fed549e 100644
--- a/builtin-commit.c
+++ b/builtin-commit.c
@@ -371,6 +371,14 @@ static int run_hook(const char *index_file, const char *name, ...)
return run_command(&hook);
}
+static int is_a_merge(const unsigned char *sha1)
+{
+ struct commit *commit = lookup_commit(sha1);
+ if (!commit || parse_commit(commit))
+ die("could not parse HEAD commit");
+ return !!(commit->parents && commit->parents->next);
+}
+
static const char sign_off_header[] = "Signed-off-by: ";
static int prepare_log_message(const char *index_file, const char *prefix)
@@ -441,13 +449,38 @@ static int prepare_log_message(const char *index_file, const char *prefix)
strbuf_release(&sb);
- if (!use_editor) {
+ if (use_editor) {
+ if (in_merge)
+ fprintf(fp,
+ "#\n"
+ "# It looks like you may be committing a MERGE.\n"
+ "# If this is not correct, please remove the file\n"
+ "# %s\n"
+ "# and try again.\n"
+ "#\n",
+ git_path("MERGE_HEAD"));
+
+ fprintf(fp,
+ "\n"
+ "# Please enter the commit message for your changes.\n"
+ "# (Comment lines starting with '#' will ");
+ if (cleanup_mode == CLEANUP_ALL)
+ fprintf(fp, "not be included)\n");
+ else /* CLEANUP_SPACE, that is. */
+ fprintf(fp, "be kept.\n"
+ "# You can remove them yourself if you want to)\n");
+ if (only_include_assumed)
+ fprintf(fp, "# %s\n", only_include_assumed);
+
+ saved_color_setting = wt_status_use_color;
+ wt_status_use_color = 0;
+ commitable = run_status(fp, index_file, prefix, 1);
+ wt_status_use_color = saved_color_setting;
+ } else {
struct rev_info rev;
unsigned char sha1[20];
const char *parent = "HEAD";
- fclose(fp);
-
if (!active_nr && read_cache() < 0)
die("Cannot read index");
@@ -464,39 +499,31 @@ static int prepare_log_message(const char *index_file, const char *prefix)
DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
run_diff_index(&rev, 1 /* cached */);
- return !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
+ commitable = !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
}
- if (in_merge)
- fprintf(fp,
- "#\n"
- "# It looks like you may be committing a MERGE.\n"
- "# If this is not correct, please remove the file\n"
- "# %s\n"
- "# and try again.\n"
- "#\n",
- git_path("MERGE_HEAD"));
-
- fprintf(fp,
- "\n"
- "# Please enter the commit message for your changes.\n"
- "# (Comment lines starting with '#' will ");
- if (cleanup_mode == CLEANUP_ALL)
- fprintf(fp, "not be included)\n");
- else /* CLEANUP_SPACE, that is. */
- fprintf(fp, "be kept.\n"
- "# You can remove them yourself if you want to)\n");
- if (only_include_assumed)
- fprintf(fp, "# %s\n", only_include_assumed);
-
- saved_color_setting = wt_status_use_color;
- wt_status_use_color = 0;
- commitable = run_status(fp, index_file, prefix, 1);
- wt_status_use_color = saved_color_setting;
-
fclose(fp);
- return commitable;
+ if (!commitable && !in_merge && !allow_empty &&
+ !(amend && is_a_merge(head_sha1))) {
+ run_status(stdout, index_file, prefix, 0);
+ unlink(commit_editmsg);
+ return 0;
+ }
+
+ if (use_editor) {
+ char index[PATH_MAX];
+ const char *env[2] = { index, NULL };
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ launch_editor(git_path(commit_editmsg), NULL, env);
+ }
+
+ if (!no_verify &&
+ run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
+ return 0;
+ }
+
+ return 1;
}
/*
@@ -755,14 +782,6 @@ int git_commit_config(const char *k, const char *v)
return git_status_config(k, v);
}
-static int is_a_merge(const unsigned char *sha1)
-{
- struct commit *commit = lookup_commit(sha1);
- if (!commit || parse_commit(commit))
- die("could not parse HEAD commit");
- return !!(commit->parents && commit->parents->next);
-}
-
static const char commit_utf8_warn[] =
"Warning: commit message does not conform to UTF-8.\n"
"You may want to amend it after fixing the message, or set the config\n"
@@ -799,11 +818,9 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
return 1;
}
- if (!prepare_log_message(index_file, prefix) && !in_merge &&
- !allow_empty && !(amend && is_a_merge(head_sha1))) {
- run_status(stdout, index_file, prefix, 0);
+ /* Prepare, let the user edit, and validate the log message. */
+ if (!prepare_log_message(index_file, prefix)) {
rollback_index_files();
- unlink(commit_editmsg);
return 1;
}
@@ -872,19 +889,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
strbuf_addf(&sb, "encoding %s\n", git_commit_encoding);
strbuf_addch(&sb, '\n');
- /* Get the commit message and validate it */
+ /* Finally, get the commit message */
header_len = sb.len;
- if (use_editor) {
- char index[PATH_MAX];
- const char *env[2] = { index, NULL };
- snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
- launch_editor(git_path(commit_editmsg), NULL, env);
- }
- if (!no_verify &&
- run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
- rollback_index_files();
- exit(1);
- }
if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
rollback_index_files();
die("could not read commit message");
-
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