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From: Anders Waldenborg <anders@0x63.nu>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
	Anders Waldenborg <anders@0x63.nu>
Subject: [PATCH v5 6/7] strbuf: separate callback for strbuf_expand:ing literals
Date: Mon, 28 Jan 2019 22:33:36 +0100	[thread overview]
Message-ID: <20190128213337.24752-7-anders@0x63.nu> (raw)
In-Reply-To: <20190128213337.24752-1-anders@0x63.nu>

Expanding '%n' and '%xNN' is generic functionality, so extract that from
the pretty.c formatter into a callback that can be reused.

No functional change intended

Signed-off-by: Anders Waldenborg <anders@0x63.nu>
---
 pretty.c | 16 +++++-----------
 strbuf.c | 21 +++++++++++++++++++++
 strbuf.h |  8 ++++++++
 3 files changed, 34 insertions(+), 11 deletions(-)

diff --git a/pretty.c b/pretty.c
index ed25845c98..7baa4c1c26 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1137,9 +1137,13 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
 	const char *msg = c->message;
 	struct commit_list *p;
 	const char *arg;
-	int ch;
+	size_t res;
 
 	/* these are independent of the commit */
+	res = strbuf_expand_literal_cb(sb, placeholder, NULL);
+	if (res)
+		return res;
+
 	switch (placeholder[0]) {
 	case 'C':
 		if (starts_with(placeholder + 1, "(auto)")) {
@@ -1158,16 +1162,6 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
 			 */
 			return ret;
 		}
-	case 'n':		/* newline */
-		strbuf_addch(sb, '\n');
-		return 1;
-	case 'x':
-		/* %x00 == NUL, %x0a == LF, etc. */
-		ch = hex2chr(placeholder + 1);
-		if (ch < 0)
-			return 0;
-		strbuf_addch(sb, ch);
-		return 3;
 	case 'w':
 		if (placeholder[1] == '(') {
 			unsigned long width = 0, indent1 = 0, indent2 = 0;
diff --git a/strbuf.c b/strbuf.c
index f6a6cf78b9..78eecd29f7 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -380,6 +380,27 @@ void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
 	}
 }
 
+size_t strbuf_expand_literal_cb(struct strbuf *sb,
+				const char *placeholder,
+				void *context)
+{
+	int ch;
+
+	switch (placeholder[0]) {
+	case 'n':		/* newline */
+		strbuf_addch(sb, '\n');
+		return 1;
+	case 'x':
+		/* %x00 == NUL, %x0a == LF, etc. */
+		ch = hex2chr(placeholder + 1);
+		if (ch < 0)
+			return 0;
+		strbuf_addch(sb, ch);
+		return 3;
+	}
+	return 0;
+}
+
 size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
 		void *context)
 {
diff --git a/strbuf.h b/strbuf.h
index fc40873b65..52e44c9ab8 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -320,6 +320,14 @@ void strbuf_expand(struct strbuf *sb,
 		   expand_fn_t fn,
 		   void *context);
 
+/**
+ * Used as callback for `strbuf_expand` to only expand literals
+ * (i.e. %n and %xNN). The context argument is ignored.
+ */
+size_t strbuf_expand_literal_cb(struct strbuf *sb,
+				const char *placeholder,
+				void *context);
+
 /**
  * Used as callback for `strbuf_expand()`, expects an array of
  * struct strbuf_expand_dict_entry as context, i.e. pairs of
-- 
2.17.1


  parent reply	other threads:[~2019-01-28 21:51 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-28 12:50 [PATCH] pretty: Add %(trailer:X) to display single trailer Anders Waldenborg
2018-10-29  4:49 ` Junio C Hamano
2018-10-29 14:14 ` Jeff King
2018-10-29 17:05   ` Anders Waldenborg
2018-10-31 20:27     ` Jeff King
2018-10-31 23:01       ` Anders Waldenborg
2018-11-01 18:42         ` Jeff King
2018-11-04 15:22 ` [PATCH v2 0/5] %(trailers) improvements in pretty format Anders Waldenborg
2018-11-04 15:22   ` [PATCH v2 1/5] pretty: single return path in %(trailers) handling Anders Waldenborg
2018-11-04 15:22   ` [PATCH v2 2/5] pretty: allow showing specific trailers Anders Waldenborg
2018-11-04 18:14     ` Eric Sunshine
2018-11-05  3:48       ` Junio C Hamano
2018-11-05  3:52         ` Eric Sunshine
2018-11-05  8:26       ` Anders Waldenborg
2018-11-05  9:00         ` Eric Sunshine
2018-11-05  5:14     ` Junio C Hamano
2018-11-04 15:22   ` [PATCH v2 3/5] pretty: add support for "nokey" option in %(trailers) Anders Waldenborg
2018-11-04 15:22   ` [PATCH v2 4/5] pretty: extract fundamental placeholders to separate function Anders Waldenborg
2018-11-05  2:06     ` Junio C Hamano
2018-11-05  8:32       ` Anders Waldenborg
2018-11-06  1:46         ` Junio C Hamano
2018-11-04 15:22   ` [PATCH v2 5/5] pretty: add support for separator option in %(trailers) Anders Waldenborg
2018-11-05  2:10     ` Junio C Hamano
2018-11-05 18:24       ` Anders Waldenborg
2018-11-06  1:48         ` Junio C Hamano
2018-11-05  5:18     ` Junio C Hamano
2018-11-04 17:40   ` [PATCH v2 0/5] %(trailers) improvements in pretty format Eric Sunshine
2018-11-05  7:09     ` Anders Waldenborg
2018-11-18 11:44   ` [PATCH v3 " Anders Waldenborg
2018-11-18 11:44     ` [PATCH v3 1/5] pretty: single return path in %(trailers) handling Anders Waldenborg
2018-11-18 11:44     ` [PATCH v3 2/5] pretty: allow showing specific trailers Anders Waldenborg
2018-11-20  5:45       ` Junio C Hamano
2018-11-20  5:59       ` Junio C Hamano
2018-11-25 23:02         ` Anders Waldenborg
2018-11-26  3:13           ` Junio C Hamano
2018-11-26  6:56             ` Anders Waldenborg
2018-11-26  7:52               ` Junio C Hamano
2018-11-18 11:44     ` [PATCH v3 3/5] pretty: add support for "valueonly" option in %(trailers) Anders Waldenborg
2018-11-20  8:14       ` Eric Sunshine
2018-11-18 11:44     ` [PATCH v3 4/5] strbuf: separate callback for strbuf_expand:ing literals Anders Waldenborg
2018-11-18 11:44     ` [PATCH v3 5/5] pretty: add support for separator option in %(trailers) Anders Waldenborg
2018-11-20  8:25       ` Eric Sunshine
2018-12-08 16:36 ` [PATCH v4 0/7] %(trailers) improvements in pretty format Anders Waldenborg
2018-12-08 16:36   ` [PATCH v4 1/7] doc: group pretty-format.txt placeholders descriptions Anders Waldenborg
2018-12-08 16:36   ` [PATCH v4 2/7] pretty: allow %(trailers) options with explicit value Anders Waldenborg
2018-12-10  8:45     ` Junio C Hamano
2018-12-18 21:30       ` Anders Waldenborg
2019-01-29 16:55         ` Jeff King
2019-01-29 21:23           ` Anders Waldenborg
     [not found]             ` <CAL21Bmmx=EO+R2t+KviNekDhU3fc0wjCcmUmbzLa14bb0PAmHA@mail.gmail.com>
2019-01-31 18:46               ` Anders Waldenborg
2019-02-02  9:14                 ` Оля Тележная
2018-12-08 16:36   ` [PATCH v4 3/7] pretty: single return path in %(trailers) handling Anders Waldenborg
2018-12-08 16:36   ` [PATCH v4 4/7] pretty: allow showing specific trailers Anders Waldenborg
2018-12-10  8:56     ` Junio C Hamano
2018-12-08 16:36   ` [PATCH v4 5/7] pretty: add support for "valueonly" option in %(trailers) Anders Waldenborg
2018-12-08 16:36   ` [PATCH v4 6/7] strbuf: separate callback for strbuf_expand:ing literals Anders Waldenborg
2018-12-08 16:36   ` [PATCH v4 7/7] pretty: add support for separator option in %(trailers) Anders Waldenborg
2019-01-28 21:33 ` [PATCH v5 0/7] %(trailers) improvements in pretty format Anders Waldenborg
2019-01-28 21:33   ` [PATCH v5 1/7] doc: group pretty-format.txt placeholders descriptions Anders Waldenborg
2019-01-28 21:33   ` [PATCH v5 2/7] pretty: Allow %(trailers) options with explicit value Anders Waldenborg
2019-01-28 22:38     ` Junio C Hamano
2019-01-29  6:45       ` Anders Waldenborg
2019-01-29 16:57         ` Jeff King
2019-01-29  6:49       ` [PATCH v5 2/7 update] pretty: allow " Anders Waldenborg
2019-01-28 21:33   ` [PATCH v5 3/7] pretty: single return path in %(trailers) handling Anders Waldenborg
2019-01-28 21:33   ` [PATCH v5 4/7] pretty: allow showing specific trailers Anders Waldenborg
2019-01-28 21:33   ` [PATCH v5 5/7] pretty: add support for "valueonly" option in %(trailers) Anders Waldenborg
2019-01-28 21:33   ` Anders Waldenborg [this message]
2019-01-28 21:33   ` [PATCH v5 7/7] pretty: add support for separator " Anders Waldenborg

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