If --cover-letter is provided, generate a cover letter message before
the patches, numbered 0.
Original patch thanks to Johannes Schindelin
Signed-off-by: Daniel Barkalow <barkalow@xxxxxxxxxxxx>
---
Documentation/git-format-patch.txt | 6 +
builtin-log.c | 215 ++++++++++++++------
t/t4013-diff-various.sh | 1 +
...tch_--stdout_--cover-letter_-n_initial..master^ | 101 +++++++++
4 files changed, 265 insertions(+), 58 deletions(-)
create mode 100644 t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index 651efe6..7ec01a0 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -17,6 +17,7 @@ SYNOPSIS
[--in-reply-to=Message-Id] [--suffix=.<sfx>]
[--ignore-if-in-upstream]
[--subject-prefix=Subject-Prefix]
+ [--cover-letter]
[ <since> | <revision range> ]
DESCRIPTION
@@ -139,6 +140,11 @@ include::diff-options.txt[]
Instead of using `.patch` as the suffix for generated
filenames, use specified suffix. A common alternative is
`--suffix=.txt`.
+
+--cover-letter::
+ Generate a cover letter template. You still have to fill in
+ a description, but the shortlog and the diffstat will be
+ generated for you.
+
Note that you would need to include the leading dot `.` if you
want a filename like `0001-description-of-my-change.patch`, and
diff --git a/builtin-log.c b/builtin-log.c
index 1f74d66..c6e3f91 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -14,6 +14,7 @@
#include "reflog-walk.h"
#include "patch-ids.h"
#include "refs.h"
+#include "run-command.h"
static int default_show_root = 1;
static const char *fmt_patch_subject_prefix = "PATCH";
@@ -453,74 +454,77 @@ static int git_format_config(const char *var, const char *value)
}
+static const char *get_oneline_for_filename(struct commit *commit,
+ int keep_subject)
+{
+ static char filename[PATH_MAX];
+ char *sol;
+ int len = 0;
+
+ sol = strstr(commit->buffer, "\n\n");
+ if (!sol)
+ filename[0] = '\0';
+ else {
+ int j, space = 0;
+
+ sol += 2;
+ /* strip [PATCH] or [PATCH blabla] */
+ if (!keep_subject && !prefixcmp(sol, "[PATCH")) {
+ char *eos = strchr(sol + 6, ']');
+ if (eos) {
+ while (isspace(*eos))
+ eos++;
+ sol = eos;
+ }
+ }
+
+ for (j = 0; len < sizeof(filename) &&
+ sol[j] && sol[j] != '\n'; j++) {
+ if (istitlechar(sol[j])) {
+ if (space) {
+ filename[len++] = '-';
+ space = 0;
+ }
+ filename[len++] = sol[j];
+ if (sol[j] == '.')
+ while (sol[j + 1] == '.')
+ j++;
+ } else
+ space = 1;
+ }
+ while (filename[len - 1] == '.'
+ || filename[len - 1] == '-')
+ len--;
+ filename[len] = '\0';
+ }
+ return filename;
+}
+
static FILE *realstdout = NULL;
static const char *output_directory = NULL;
-static int reopen_stdout(struct commit *commit, int nr, int keep_subject,
- int numbered_files)
+static int reopen_stdout(const char *oneline, int nr, int total)
{
char filename[PATH_MAX];
- char *sol;
int len = 0;
int suffix_len = strlen(fmt_patch_suffix) + 1;
if (output_directory) {
- if (strlen(output_directory) >=
+ len = snprintf(filename, sizeof(filename), "%s",
+ output_directory);
+ if (len >=
sizeof(filename) - FORMAT_PATCH_NAME_MAX - suffix_len)
return error("name of output directory is too long");
- strlcpy(filename, output_directory, sizeof(filename) - suffix_len);
- len = strlen(filename);
if (filename[len - 1] != '/')
filename[len++] = '/';
}
- if (numbered_files) {
- sprintf(filename + len, "%d", nr);
- len = strlen(filename);
-
- } else {
- sprintf(filename + len, "%04d", nr);
- len = strlen(filename);
-
- sol = strstr(commit->buffer, "\n\n");
- if (sol) {
- int j, space = 1;
-
- sol += 2;
- /* strip [PATCH] or [PATCH blabla] */
- if (!keep_subject && !prefixcmp(sol, "[PATCH")) {
- char *eos = strchr(sol + 6, ']');
- if (eos) {
- while (isspace(*eos))
- eos++;
- sol = eos;
- }
- }
-
- for (j = 0;
- j < FORMAT_PATCH_NAME_MAX - suffix_len - 5 &&
- len < sizeof(filename) - suffix_len &&
- sol[j] && sol[j] != '\n';
- j++) {
- if (istitlechar(sol[j])) {
- if (space) {
- filename[len++] = '-';
- space = 0;
- }
- filename[len++] = sol[j];
- if (sol[j] == '.')
- while (sol[j + 1] == '.')
- j++;
- } else
- space = 1;
- }
- while (filename[len - 1] == '.'
- || filename[len - 1] == '-')
- len--;
- filename[len] = 0;
- }
- if (len + suffix_len >= sizeof(filename))
- return error("Patch pathname too long");
+ if (!filename)
+ len += sprintf(filename + len, "%d", nr);
+ else {
+ len += sprintf(filename + len, "%04d-", nr);
+ len += snprintf(filename + len, sizeof(filename) - len - 1
+ - suffix_len, "%s", oneline);
strcpy(filename + len, fmt_patch_suffix);
}
@@ -591,6 +595,74 @@ static void gen_message_id(struct rev_info *info, char *base)
info->message_id = buf.buf;
}
+static void make_cover_letter(struct rev_info *rev,
+ int use_stdout, int numbered, int numbered_files,
+ struct commit *origin, struct commit *head)
+{
+ const char *committer;
+ const char *origin_sha1, *head_sha1;
+ const char *argv[7];
+ const char *subject_start = NULL;
+ const char *body = "*** SUBJECT HERE ***\n\n\n*** BLURB HERE ***\n";
+ const char *msg;
+ const char *extra_headers = rev->extra_headers;
+ struct strbuf sb;
+ const char *encoding = "utf-8";
+
+ if (rev->commit_format != CMIT_FMT_EMAIL)
+ die("Cover letter needs email format");
+
+ if (!use_stdout && reopen_stdout(numbered_files ?
+ NULL : "cover-letter", 0, rev->total))
+ return;
+
+ origin_sha1 = sha1_to_hex(origin ? origin->object.sha1 : null_sha1);
+ head_sha1 = sha1_to_hex(head->object.sha1);
+
+ write_email_headers(rev, head_sha1, &subject_start, &extra_headers);
+
+ committer = git_committer_info(0);
+
+ msg = body;
+ strbuf_init(&sb, 0);
+ add_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
+ encoding);
+ pp_title_line(CMIT_FMT_EMAIL, &msg, &sb, subject_start, extra_headers,
+ encoding, 0);
+ pp_remainder(CMIT_FMT_EMAIL, &msg, &sb, 0);
+ printf("%s\n", sb.buf);
+
+ strbuf_release(&sb);
+
+ /*
+ * We can only do diffstat with a unique reference point, and
+ * log is a bit tricky, so just skip it.
+ */
+ if (!origin)
+ return;
+
+ argv[0] = "shortlog";
+ argv[1] = head_sha1;
+ argv[2] = "--not";
+ argv[3] = origin_sha1;
+ argv[4] = NULL;
+ fflush(stdout);
+ run_command_v_opt(argv, RUN_GIT_CMD);
+
+ argv[0] = "diff";
+ argv[1] = "--stat";
+ argv[2] = "--summary";
+ argv[3] = head_sha1;
+ argv[4] = "--not";
+ argv[5] = origin_sha1;
+ argv[6] = NULL;
+ fflush(stdout);
+ run_command_v_opt(argv, RUN_GIT_CMD);
+
+ fflush(stdout);
+ printf("\n");
+}
+
static const char *clean_message_id(const char *msg_id)
{
char ch;
@@ -626,6 +698,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
int subject_prefix = 0;
int ignore_if_in_upstream = 0;
int thread = 0;
+ int cover_letter = 0;
+ struct commit *origin = NULL, *head = NULL;
const char *in_reply_to = NULL;
struct patch_ids ids;
char *add_signoff = NULL;
@@ -725,6 +799,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
rev.subject_prefix = argv[i] + 17;
} else if (!prefixcmp(argv[i], "--suffix="))
fmt_patch_suffix = argv[i] + 9;
+ else if (!strcmp(argv[i], "--cover-letter"))
+ cover_letter = 1;
else
argv[j++] = argv[i];
}
@@ -776,6 +852,20 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
* get_revision() to do the usual traversal.
*/
}
+ if (cover_letter) {
+ /* remember the range */
+ int i;
+ for (i = 0; i < rev.pending.nr; i++) {
+ struct object *o = rev.pending.objects[i].item;
+ if (o->flags & UNINTERESTING)
+ origin = (struct commit *)o;
+ else
+ head = (struct commit *)o;
+ }
+ /* We can't generate a cover letter without any patches */
+ if (!head)
+ return 0;
+ }
if (ignore_if_in_upstream)
get_patch_ids(&rev, &ids, prefix);
@@ -802,9 +892,18 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
numbered = 1;
if (numbered)
rev.total = total + start_number - 1;
- rev.add_signoff = add_signoff;
if (in_reply_to)
rev.ref_message_id = clean_message_id(in_reply_to);
+ if (cover_letter) {
+ if (thread) {
+ gen_message_id(&rev, "cover");
+ }
+ make_cover_letter(&rev, use_stdout, numbered, numbered_files,
+ origin, head);
+ total++;
+ start_number--;
+ }
+ rev.add_signoff = add_signoff;
while (0 <= --nr) {
int shown;
commit = list[nr];
@@ -819,10 +918,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
}
gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
}
- if (!use_stdout)
- if (reopen_stdout(commit, rev.nr, keep_subject,
- numbered_files))
- die("Failed to create output files");
+ if (!use_stdout && reopen_stdout(numbered_files ? NULL :
+ get_oneline_for_filename(commit, keep_subject),
+ rev.nr, rev.total))
+ die("Failed to create output files");
shown = log_tree_commit(&rev, commit);
free(commit->buffer);
commit->buffer = NULL;
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 9eec754..6b4d1c5 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -245,6 +245,7 @@ format-patch --inline --stdout initial..master
format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
config format.subjectprefix DIFFERENT_PREFIX
format-patch --inline --stdout initial..master^^
+format-patch --stdout --cover-letter -n initial..master^
diff --abbrev initial..side
diff -r initial..side
diff --git a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
new file mode 100644
index 0000000..311e207
--- /dev/null
+++ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
@@ -0,0 +1,101 @@
+$ git format-patch --stdout --cover-letter -n initial..master^
+From 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Mon Sep 17 00:00:00 2001
+From: C O Mitter <committer@xxxxxxxxxxx>
+Date: Mon, 26 Jun 2006 00:05:00 +0000
+Subject: [DIFFERENT_PREFIX 0/2] *** SUBJECT HERE ***
+
+
+*** BLURB HERE ***
+
+A U Thor (2):
+ Second
+ Third
+
+ dir/sub | 4 ++++
+ file0 | 3 +++
+ file1 | 3 +++
+ file2 | 3 ---
+ 4 files changed, 10 insertions(+), 3 deletions(-)
+ create mode 100644 file1
+ delete mode 100644 file2
+
+From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
+From: A U Thor <author@xxxxxxxxxxx>
+Date: Mon, 26 Jun 2006 00:01:00 +0000
+Subject: [DIFFERENT_PREFIX 1/2] Second
+
+This is the second commit.
+---
+ dir/sub | 2 ++
+ file0 | 3 +++
+ file2 | 3 ---
+ 3 files changed, 5 insertions(+), 3 deletions(-)
+ delete mode 100644 file2
+
+diff --git a/dir/sub b/dir/sub
+index 35d242b..8422d40 100644
+--- a/dir/sub
++++ b/dir/sub
+@@ -1,2 +1,4 @@
+ A
+ B
++C
++D
+diff --git a/file0 b/file0
+index 01e79c3..b414108 100644
+--- a/file0
++++ b/file0
+@@ -1,3 +1,6 @@
+ 1
+ 2
+ 3
++4
++5
++6
+diff --git a/file2 b/file2
+deleted file mode 100644
+index 01e79c3..0000000
+--- a/file2
++++ /dev/null
+@@ -1,3 +0,0 @@
+-1
+-2
+-3
+--
+g-i-t--v-e-r-s-i-o-n
+
+
+From 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Mon Sep 17 00:00:00 2001
+From: A U Thor <author@xxxxxxxxxxx>
+Date: Mon, 26 Jun 2006 00:02:00 +0000
+Subject: [DIFFERENT_PREFIX 2/2] Third
+
+---
+ dir/sub | 2 ++
+ file1 | 3 +++
+ 2 files changed, 5 insertions(+), 0 deletions(-)
+ create mode 100644 file1
+
+diff --git a/dir/sub b/dir/sub
+index 8422d40..cead32e 100644
+--- a/dir/sub
++++ b/dir/sub
+@@ -2,3 +2,5 @@ A
+ B
+ C
+ D
++E
++F
+diff --git a/file1 b/file1
+new file mode 100644
+index 0000000..b1e6722
+--- /dev/null
++++ b/file1
+@@ -0,0 +1,3 @@
++A
++B
++C
+--
+g-i-t--v-e-r-s-i-o-n
+
+$
--
1.5.4.27.gf6864
-
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