From: John Passaro <john.a.passaro@xxxxxxxxx>
git-commit adds user trailers to the commit message by passing its
`--trailer` arguments to a child process running `git-interpret-trailers
--in-place`. This logic is broadly useful, not just for git-commit but
for other commands constructing message bodies (e.g. git-tag).
Let's move this logic from git-commit to a new function in the trailer
API, so that it can be re-used in other commands.
Helped-by: Patrick Steinhardt <ps@xxxxxx>
Helped-by: Junio C Hamano <gitster@xxxxxxxxx>
Signed-off-by: John Passaro <john.a.passaro@xxxxxxxxx>
---
builtin/commit.c | 10 ++--------
trailer.c | 12 ++++++++++++
trailer.h | 9 +++++++++
3 files changed, 23 insertions(+), 8 deletions(-)
diff --git a/builtin/commit.c b/builtin/commit.c
index 5a3248370db..63cd090b6f2 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -38,6 +38,7 @@
#include "commit-reach.h"
#include "commit-graph.h"
#include "pretty.h"
+#include "trailer.h"
static const char * const builtin_commit_usage[] = {
N_("git commit [-a | --interactive | --patch] [-s] [-v] [-u<mode>] [--amend]\n"
@@ -1030,14 +1031,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
fclose(s->fp);
if (trailer_args.nr) {
- struct child_process run_trailer = CHILD_PROCESS_INIT;
-
- strvec_pushl(&run_trailer.args, "interpret-trailers",
- "--in-place", "--no-divider",
- git_path_commit_editmsg(), NULL);
- strvec_pushv(&run_trailer.args, trailer_args.v);
- run_trailer.git_cmd = 1;
- if (run_command(&run_trailer))
+ if (amend_file_with_trailers(git_path_commit_editmsg(), &trailer_args))
die(_("unable to pass trailers to --trailers"));
strvec_clear(&trailer_args);
}
diff --git a/trailer.c b/trailer.c
index c72ae687099..724cb78be5f 100644
--- a/trailer.c
+++ b/trailer.c
@@ -1170,3 +1170,15 @@ void trailer_iterator_release(struct trailer_iterator *iter)
strbuf_release(&iter->val);
strbuf_release(&iter->key);
}
+
+int amend_file_with_trailers(const char *path, const struct strvec *trailer_args)
+{
+ struct child_process run_trailer = CHILD_PROCESS_INIT;
+
+ run_trailer.git_cmd = 1;
+ strvec_pushl(&run_trailer.args, "interpret-trailers",
+ "--in-place", "--no-divider",
+ path, NULL);
+ strvec_pushv(&run_trailer.args, trailer_args->v);
+ return run_command(&run_trailer);
+}
diff --git a/trailer.h b/trailer.h
index 9f42aa75994..c364405267a 100644
--- a/trailer.h
+++ b/trailer.h
@@ -4,6 +4,8 @@
#include "list.h"
#include "strbuf.h"
+struct strvec;
+
enum trailer_where {
WHERE_DEFAULT,
WHERE_END,
@@ -158,4 +160,11 @@ int trailer_iterator_advance(struct trailer_iterator *iter);
*/
void trailer_iterator_release(struct trailer_iterator *iter);
+/*
+ * Augment a file to add trailers to it by running git-interpret-trailers.
+ * This calls run_command() and its return value is the same (i.e. 0 for
+ * success, various non-zero for other errors). See run-command.h.
+ */
+int amend_file_with_trailers(const char *path, const struct strvec *trailer_args);
+
#endif /* TRAILER_H */
--
gitgitgadget
