[PATCH v4 0/4] `git format-patch --stdout id2..id`

[PATCH v4 0/4] `git format-patch --stdout id2..id`

[cgit]

Fixed patch generation for root diffs.

Generate proper file names when specifying two revisions.

Lukas Fleischer (4):
  ui-diff: Check the return value of get_sha1()
  ui-patch.c: Use log_tree_commit() to generate diffs
  Allow for creating patch series
  ui-patch: Rename variables

 cmd.c      |  2 +-
 ui-diff.c  | 23 +++++++----------
 ui-patch.c | 87 ++++++++++++++++++++++++++++++++++++++------------------------
 ui-patch.h |  3 ++-
 4 files changed, 65 insertions(+), 50 deletions(-)

-- 
1.8.4.rc3.500.gc3113b0

[PATCH v4 1/4] ui-diff: Check the return value of get_sha1()

[cgit]

Sync with what we do everywhere else and check the return value of
get_sha1() instead of calling sha1_object_info() to validate the object.
Note that we later call lookup_commit_reference(), which checks that
both SHA1 values refer to commits, anyway.

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
 ui-diff.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/ui-diff.c b/ui-diff.c
index 838db8c..1209c47 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -360,15 +360,11 @@ void cgit_print_diff_ctrls()
 void cgit_print_diff(const char *new_rev, const char *old_rev,
 		     const char *prefix, int show_ctrls, int raw)
 {
-	enum object_type type;
-	unsigned long size;
 	struct commit *commit, *commit2;
 
 	if (!new_rev)
 		new_rev = ctx.qry.head;
-	get_sha1(new_rev, new_rev_sha1);
-	type = sha1_object_info(new_rev_sha1, &size);
-	if (type == OBJ_BAD) {
+	if (get_sha1(new_rev, new_rev_sha1)) {
 		cgit_print_error("Bad object name: %s", new_rev);
 		return;
 	}
@@ -378,19 +374,18 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 		return;
 	}
 
-	if (old_rev)
-		get_sha1(old_rev, old_rev_sha1);
-	else if (commit->parents && commit->parents->item)
+	if (old_rev) {
+		if (get_sha1(old_rev, old_rev_sha1)) {
+			cgit_print_error("Bad object name: %s", old_rev);
+			return;
+		}
+	} else if (commit->parents && commit->parents->item) {
 		hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
-	else
+	} else {
 		hashclr(old_rev_sha1);
+	}
 
 	if (!is_null_sha1(old_rev_sha1)) {
-		type = sha1_object_info(old_rev_sha1, &size);
-		if (type == OBJ_BAD) {
-			cgit_print_error("Bad object name: %s", sha1_to_hex(old_rev_sha1));
-			return;
-		}
 		commit2 = lookup_commit_reference(old_rev_sha1);
 		if (!commit2 || parse_commit(commit2)) {
 			cgit_print_error("Bad commit: %s", sha1_to_hex(old_rev_sha1));
-- 
1.8.4.rc3.500.gc3113b0

[PATCH v4 2/4] ui-patch.c: Use log_tree_commit() to generate diffs

[cgit]

Instead of using our own formatting, use log_tree_commit() from Git to
create patches. This removes unnecessary duplicate code and also fixes a
bug with e-mail address formatting that existed in our own
implementation.

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
 ui-patch.c | 51 ++++++++++++++++++++++++++++-----------------------
 1 file changed, 28 insertions(+), 23 deletions(-)

diff --git a/ui-patch.c b/ui-patch.c
index 3922a44..72c9749 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -13,9 +13,11 @@
 
 void cgit_print_patch(char *hex, const char *prefix)
 {
+	struct rev_info rev;
 	struct commit *commit;
-	struct commitinfo *info;
 	unsigned char sha1[20], old_sha1[20];
+	char rev_range[2 * 40 + 3];
+	char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
 	char *patchname;
 
 	if (!hex)
@@ -30,36 +32,39 @@ void cgit_print_patch(char *hex, const char *prefix)
 		cgit_print_error("Bad commit reference: %s", hex);
 		return;
 	}
-	info = cgit_parse_commit(commit);
 
-	if (commit->parents && commit->parents->item)
+	if (commit->parents && commit->parents->item) {
 		hashcpy(old_sha1, commit->parents->item->object.sha1);
-	else
+		sprintf(rev_range, "%s..%s", sha1_to_hex(old_sha1),
+			sha1_to_hex(sha1));
+	} else {
 		hashclr(old_sha1);
+		memcpy(rev_range, sha1_to_hex(sha1), 41);
+	}
 
 	patchname = fmt("%s.patch", sha1_to_hex(sha1));
 	ctx.page.mimetype = "text/plain";
 	ctx.page.filename = patchname;
 	cgit_print_http_headers(&ctx);
-	htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
-	htmlf("From: %s", info->author);
-	if (!ctx.cfg.noplainemail) {
-		htmlf(" %s", info->author_email);
+
+	if (ctx.cfg.noplainemail) {
+		rev_argv[2] = "--format=format:From %H Mon Sep 17 00:00:00 "
+			      "2001%nFrom: %an%nDate: %aD%n%w(78,0,1)Subject: "
+			      "%s%n%n%w(0)%b";
 	}
-	html("\n");
-	html("Date: ");
-	cgit_print_date(info->author_date, "%a, %d %b %Y %H:%M:%S %z%n", ctx.cfg.local_time);
-	htmlf("Subject: %s\n\n", info->subject);
-	if (info->msg && *info->msg) {
-		htmlf("%s", info->msg);
-		if (info->msg[strlen(info->msg) - 1] != '\n')
-			html("\n");
+
+	init_revisions(&rev, NULL);
+	rev.abbrev = DEFAULT_ABBREV;
+	rev.verbose_header = 1;
+	rev.diff = 1;
+	rev.show_root_diff = 1;
+	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
+	setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
+			NULL);
+	prepare_revision_walk(&rev);
+
+	while ((commit = get_revision(&rev)) != NULL) {
+		log_tree_commit(&rev, commit);
+		printf("--\ncgit %s\n", cgit_version);
 	}
-	html("---\n");
-	if (prefix)
-		htmlf("(limited to '%s')\n\n", prefix);
-	cgit_diff_tree(old_sha1, sha1, filepair_cb_raw, prefix, 0);
-	html("--\n");
-	htmlf("cgit %s\n", cgit_version);
-	cgit_free_commitinfo(info);
 }
-- 
1.8.4.rc3.500.gc3113b0

[PATCH v4 3/4] Allow for creating patch series

[cgit]

This allows for specifying a revision range using the id2 parameter of
/patch/. The output that is produced is similar to

    $ git format-patch --stdout id2..id

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
 cmd.c      |  2 +-
 ui-patch.c | 23 ++++++++++++++++++-----
 ui-patch.h |  2 +-
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/cmd.c b/cmd.c
index 9893710..0202917 100644
--- a/cmd.c
+++ b/cmd.c
@@ -98,7 +98,7 @@ static void repolist_fn(struct cgit_context *ctx)
 
 static void patch_fn(struct cgit_context *ctx)
 {
-	cgit_print_patch(ctx->qry.sha1, ctx->qry.path);
+	cgit_print_patch(ctx->qry.sha1, ctx->qry.sha2, ctx->qry.path);
 }
 
 static void plain_fn(struct cgit_context *ctx)
diff --git a/ui-patch.c b/ui-patch.c
index 72c9749..bb39294 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -11,7 +11,7 @@
 #include "html.h"
 #include "ui-shared.h"
 
-void cgit_print_patch(char *hex, const char *prefix)
+void cgit_print_patch(char *hex, const char *old_rev, const char *prefix)
 {
 	struct rev_info rev;
 	struct commit *commit;
@@ -33,16 +33,29 @@ void cgit_print_patch(char *hex, const char *prefix)
 		return;
 	}
 
-	if (commit->parents && commit->parents->item) {
+	if (old_rev) {
+		if (get_sha1(old_rev, old_sha1)) {
+			cgit_print_error("Bad object id: %s", old_rev);
+			return;
+		}
+		if (!lookup_commit_reference(old_sha1)) {
+			cgit_print_error("Bad commit reference: %s", old_rev);
+			return;
+		}
+	} else if (commit->parents && commit->parents->item) {
 		hashcpy(old_sha1, commit->parents->item->object.sha1);
-		sprintf(rev_range, "%s..%s", sha1_to_hex(old_sha1),
-			sha1_to_hex(sha1));
 	} else {
 		hashclr(old_sha1);
+	}
+
+	if (is_null_sha1(old_sha1)) {
 		memcpy(rev_range, sha1_to_hex(sha1), 41);
+	} else {
+		sprintf(rev_range, "%s..%s", sha1_to_hex(old_sha1),
+			sha1_to_hex(sha1));
 	}
 
-	patchname = fmt("%s.patch", sha1_to_hex(sha1));
+	patchname = fmt("%s.patch", rev_range);
 	ctx.page.mimetype = "text/plain";
 	ctx.page.filename = patchname;
 	cgit_print_http_headers(&ctx);
diff --git a/ui-patch.h b/ui-patch.h
index 1641cea..acd37fd 100644
--- a/ui-patch.h
+++ b/ui-patch.h
@@ -1,6 +1,6 @@
 #ifndef UI_PATCH_H
 #define UI_PATCH_H
 
-extern void cgit_print_patch(char *hex, const char *prefix);
+extern void cgit_print_patch(char *hex, const char *old_rev, const char *prefix);
 
 #endif /* UI_PATCH_H */
-- 
1.8.4.rc3.500.gc3113b0

[PATCH v4 4/4] ui-patch: Rename variables

[cgit]

Rename parameters and local variables to match those from ui-diff. Also,
convert a "char *" to "const char *".

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
 ui-patch.c | 33 +++++++++++++++++----------------
 ui-patch.h |  3 ++-
 2 files changed, 19 insertions(+), 17 deletions(-)

diff --git a/ui-patch.c b/ui-patch.c
index bb39294..1dbb39d 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -11,48 +11,49 @@
 #include "html.h"
 #include "ui-shared.h"
 
-void cgit_print_patch(char *hex, const char *old_rev, const char *prefix)
+void cgit_print_patch(const char *new_rev, const char *old_rev,
+		      const char *prefix)
 {
 	struct rev_info rev;
 	struct commit *commit;
-	unsigned char sha1[20], old_sha1[20];
+	unsigned char new_rev_sha1[20], old_rev_sha1[20];
 	char rev_range[2 * 40 + 3];
 	char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
 	char *patchname;
 
-	if (!hex)
-		hex = ctx.qry.head;
+	if (!new_rev)
+		new_rev = ctx.qry.head;
 
-	if (get_sha1(hex, sha1)) {
-		cgit_print_error("Bad object id: %s", hex);
+	if (get_sha1(new_rev, new_rev_sha1)) {
+		cgit_print_error("Bad object id: %s", new_rev);
 		return;
 	}
-	commit = lookup_commit_reference(sha1);
+	commit = lookup_commit_reference(new_rev_sha1);
 	if (!commit) {
-		cgit_print_error("Bad commit reference: %s", hex);
+		cgit_print_error("Bad commit reference: %s", new_rev);
 		return;
 	}
 
 	if (old_rev) {
-		if (get_sha1(old_rev, old_sha1)) {
+		if (get_sha1(old_rev, old_rev_sha1)) {
 			cgit_print_error("Bad object id: %s", old_rev);
 			return;
 		}
-		if (!lookup_commit_reference(old_sha1)) {
+		if (!lookup_commit_reference(old_rev_sha1)) {
 			cgit_print_error("Bad commit reference: %s", old_rev);
 			return;
 		}
 	} else if (commit->parents && commit->parents->item) {
-		hashcpy(old_sha1, commit->parents->item->object.sha1);
+		hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
 	} else {
-		hashclr(old_sha1);
+		hashclr(old_rev_sha1);
 	}
 
-	if (is_null_sha1(old_sha1)) {
-		memcpy(rev_range, sha1_to_hex(sha1), 41);
+	if (is_null_sha1(old_rev_sha1)) {
+		memcpy(rev_range, sha1_to_hex(new_rev_sha1), 41);
 	} else {
-		sprintf(rev_range, "%s..%s", sha1_to_hex(old_sha1),
-			sha1_to_hex(sha1));
+		sprintf(rev_range, "%s..%s", sha1_to_hex(old_rev_sha1),
+			sha1_to_hex(new_rev_sha1));
 	}
 
 	patchname = fmt("%s.patch", rev_range);
diff --git a/ui-patch.h b/ui-patch.h
index acd37fd..7a6cacd 100644
--- a/ui-patch.h
+++ b/ui-patch.h
@@ -1,6 +1,7 @@
 #ifndef UI_PATCH_H
 #define UI_PATCH_H
 
-extern void cgit_print_patch(char *hex, const char *old_rev, const char *prefix);
+extern void cgit_print_patch(const char *new_rev, const char *old_rev,
+			     const char *prefix);
 
 #endif /* UI_PATCH_H */
-- 
1.8.4.rc3.500.gc3113b0