From: Thomas Gummerer <t.gummerer@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
"Paul-Sebastian Ungureanu" <ungureanupaulsebastian@gmail.com>,
"SZEDER Gábor" <szeder.dev@gmail.com>,
"Johannes Schindelin" <johannes.schindelin@gmx.de>,
"Johannes Sixt" <j6t@kdbg.org>,
"Thomas Gummerer" <t.gummerer@gmail.com>
Subject: [PATCH v13 03/27] strbuf.c: add `strbuf_insertf()` and `strbuf_vinsertf()`
Date: Mon, 25 Feb 2019 23:16:07 +0000 [thread overview]
Message-ID: <20190225231631.30507-4-t.gummerer@gmail.com> (raw)
In-Reply-To: <20190225231631.30507-1-t.gummerer@gmail.com>
From: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Implement `strbuf_insertf()` and `strbuf_vinsertf()` to
insert data using a printf format string.
Original-idea-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
---
strbuf.c | 36 ++++++++++++++++++++++++++++++++++++
strbuf.h | 9 +++++++++
2 files changed, 45 insertions(+)
diff --git a/strbuf.c b/strbuf.c
index 82e90f1dfe..87ecf7f975 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -249,6 +249,42 @@ void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
strbuf_splice(sb, pos, 0, data, len);
}
+void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt, va_list ap)
+{
+ int len, len2;
+ char save;
+ va_list cp;
+
+ if (pos > sb->len)
+ die("`pos' is too far after the end of the buffer");
+ va_copy(cp, ap);
+ len = vsnprintf(sb->buf + sb->len, 0, fmt, cp);
+ va_end(cp);
+ if (len < 0)
+ BUG("your vsnprintf is broken (returned %d)", len);
+ if (!len)
+ return; /* nothing to do */
+ if (unsigned_add_overflows(sb->len, len))
+ die("you want to use way too much memory");
+ strbuf_grow(sb, len);
+ memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos);
+ /* vsnprintf() will append a NUL, overwriting one of our characters */
+ save = sb->buf[pos + len];
+ len2 = vsnprintf(sb->buf + pos, len + 1, fmt, ap);
+ sb->buf[pos + len] = save;
+ if (len2 != len)
+ BUG("your vsnprintf is broken (returns inconsistent lengths)");
+ strbuf_setlen(sb, sb->len + len);
+}
+
+void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ strbuf_vinsertf(sb, pos, fmt, ap);
+ va_end(ap);
+}
+
void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
{
strbuf_splice(sb, pos, len, "", 0);
diff --git a/strbuf.h b/strbuf.h
index be02150df3..8f8fe01e68 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -244,6 +244,15 @@ void strbuf_addchars(struct strbuf *sb, int c, size_t n);
*/
void strbuf_insert(struct strbuf *sb, size_t pos, const void *, size_t);
+/**
+ * Insert data to the given position of the buffer giving a printf format
+ * string. The contents will be shifted, not overwritten.
+ */
+void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt,
+ va_list ap);
+
+void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...);
+
/**
* Remove given amount of data from a given position of the buffer.
*/
--
2.21.0.rc2.291.g17236886c5
next prev parent reply other threads:[~2019-02-25 23:16 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <https://public-inbox.org/git/cover.1542925164.git.ungureanupaulsebastian@gmail.com/>
2018-12-20 19:44 ` [PATCH v12 00/26] Convert "git stash" to C builtin Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 01/26] sha1-name.c: add `get_oidf()` which acts like `get_oid()` Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 02/26] strbuf.c: add `strbuf_join_argv()` Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 03/26] strbuf.c: add `strbuf_insertf()` and `strbuf_vinsertf()` Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 04/26] ident: add the ability to provide a "fallback identity" Paul-Sebastian Ungureanu
2018-12-26 21:21 ` Junio C Hamano
2018-12-27 21:24 ` Johannes Schindelin
2018-12-28 19:40 ` Junio C Hamano
2018-12-20 19:44 ` [PATCH v12 05/26] stash: improve option parsing test coverage Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 06/26] t3903: modernize style Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 07/26] stash: rename test cases to be more descriptive Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 08/26] stash: add tests for `git stash show` config Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 09/26] stash: mention options in `show` synopsis Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 10/26] stash: convert apply to builtin Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 11/26] stash: convert drop and clear " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 12/26] stash: convert branch " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 13/26] stash: convert pop " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 14/26] stash: convert list " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 15/26] stash: convert show " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 16/26] stash: convert store " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 17/26] stash: convert create " Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 18/26] stash: convert push " Paul-Sebastian Ungureanu
2019-02-08 11:30 ` SZEDER Gábor
2019-02-10 22:17 ` Thomas Gummerer
2019-02-11 1:13 ` SZEDER Gábor
2019-02-12 23:18 ` Thomas Gummerer
2019-02-19 0:23 ` SZEDER Gábor
2019-02-19 10:47 ` Johannes Schindelin
2019-02-19 19:59 ` Junio C Hamano
2019-02-20 21:01 ` Johannes Schindelin
2019-02-19 23:59 ` Thomas Gummerer
2019-02-20 4:37 ` Junio C Hamano
2019-02-20 21:10 ` Johannes Schindelin
2019-02-20 22:30 ` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 00/27] Convert "git stash" to C builtin Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 01/27] sha1-name.c: add `get_oidf()` which acts like `get_oid()` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 02/27] strbuf.c: add `strbuf_join_argv()` Thomas Gummerer
2019-02-25 23:16 ` Thomas Gummerer [this message]
2019-02-25 23:16 ` [PATCH v13 04/27] ident: add the ability to provide a "fallback identity" Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 05/27] stash: improve option parsing test coverage Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 06/27] t3903: modernize style Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 07/27] t3903: add test for --intent-to-add file Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 08/27] stash: rename test cases to be more descriptive Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 09/27] stash: add tests for `git stash show` config Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 10/27] stash: mention options in `show` synopsis Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 11/27] stash: convert apply to builtin Thomas Gummerer
2019-03-14 13:19 ` regression in new built-in stash + fsmonitor (was Re: [PATCH v13 11/27] stash: convert apply to builtin) Ævar Arnfjörð Bjarmason
2019-03-14 15:20 ` Johannes Schindelin
2019-03-14 15:40 ` Ævar Arnfjörð Bjarmason
2019-03-14 22:45 ` Johannes Schindelin
2019-03-14 23:39 ` Ævar Arnfjörð Bjarmason
2019-03-15 2:23 ` Ben Peart
2019-02-25 23:16 ` [PATCH v13 12/27] stash: convert drop and clear to builtin Thomas Gummerer
2019-03-07 19:15 ` Jeff King
2019-03-09 18:30 ` Thomas Gummerer
2019-03-10 23:26 ` Jeff King
2019-03-11 1:40 ` Junio C Hamano
2019-03-11 21:40 ` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 13/27] stash: convert branch " Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 14/27] stash: convert pop " Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 15/27] stash: convert list " Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 16/27] stash: convert show " Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 17/27] stash: convert store " Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 18/27] stash: convert create " Thomas Gummerer
2019-03-07 19:18 ` Jeff King
2019-03-08 15:30 ` Johannes Schindelin
2019-03-09 18:26 ` Thomas Gummerer
2019-03-11 1:47 ` Junio C Hamano
2019-03-11 7:30 ` Junio C Hamano
2019-03-11 21:42 ` Thomas Gummerer
2019-03-11 22:16 ` [PATCH v2] stash: pass pathspec as pointer Thomas Gummerer
2019-03-12 6:50 ` Junio C Hamano
2019-03-12 22:35 ` Johannes Schindelin
2019-03-12 23:40 ` Thomas Gummerer
2019-03-13 1:47 ` Junio C Hamano
2019-03-13 22:14 ` Johannes Schindelin
2019-03-15 22:33 ` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 19/27] stash: convert push to builtin Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 20/27] stash: make push -q quiet Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 21/27] stash: convert save to builtin Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 22/27] stash: optimize `get_untracked_files()` and `check_changes()` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 23/27] stash: replace all `write-tree` child processes with API calls Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 24/27] stash: convert `stash--helper.c` into `stash.c` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 25/27] stash: add back the original, scripted `git stash` Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 26/27] stash: optionally use the scripted version again Thomas Gummerer
2019-02-25 23:16 ` [PATCH v13 27/27] tests: add a special setup where stash.useBuiltin is off Thomas Gummerer
2019-02-26 12:40 ` [PATCH v13 00/27] Convert "git stash" to C builtin Johannes Schindelin
2019-02-26 20:48 ` Thomas Gummerer
2019-02-26 21:45 ` Ævar Arnfjörð Bjarmason
2019-02-26 22:37 ` Johannes Schindelin
2019-03-03 1:24 ` Junio C Hamano
2019-03-03 1:25 ` Junio C Hamano
2019-03-03 10:03 ` Thomas Gummerer
2018-12-20 19:44 ` [PATCH v12 19/26] stash: make push -q quiet Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 20/26] stash: convert save to builtin Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 21/26] stash: optimize `get_untracked_files()` and `check_changes()` Paul-Sebastian Ungureanu
2019-01-06 22:47 ` Thomas Gummerer
2018-12-20 19:44 ` [PATCH v12 22/26] stash: replace all `write-tree` child processes with API calls Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 23/26] stash: convert `stash--helper.c` into `stash.c` Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 24/26] stash: add back the original, scripted `git stash` Paul-Sebastian Ungureanu
2018-12-20 19:44 ` [PATCH v12 25/26] stash: optionally use the scripted version again Paul-Sebastian Ungureanu
2019-01-06 22:59 ` Thomas Gummerer
2018-12-20 19:44 ` [PATCH v12 26/26] tests: add a special setup where stash.useBuiltin is off Paul-Sebastian Ungureanu
2019-01-03 23:39 ` [PATCH v12 00/26] Convert "git stash" to C builtin Junio C Hamano
2019-01-18 12:06 ` Johannes Schindelin
2019-01-18 17:49 ` Junio C Hamano
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