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From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= 
	<pclouds@gmail.com>
Subject: [PATCH v3 20/32] wrapper.c: wrapper to open a file, fprintf then close
Date: Sun, 28 Sep 2014 08:22:34 +0700
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Cc: Junio C Hamano <gitster@pobox.com>,
	=?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= 
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Signed-off-by: Nguy=E1=BB=85n Th=C3=A1i Ng=E1=BB=8Dc Duy <pclouds@gmail=
=2Ecom>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 cache.h   |  2 ++
 wrapper.c | 31 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/cache.h b/cache.h
index 1784fc6..aedfd05 100644
--- a/cache.h
+++ b/cache.h
@@ -1452,6 +1452,8 @@ static inline ssize_t write_str_in_full(int fd, c=
onst char *str)
 {
 	return write_in_full(fd, str, strlen(str));
 }
+__attribute__((format (printf,3,4)))
+extern int write_file(const char *path, int fatal, const char *fmt, ..=
=2E);
=20
 /* pager.c */
 extern void setup_pager(void);
diff --git a/wrapper.c b/wrapper.c
index 25074d7..d53a3b3 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -537,3 +537,34 @@ char *xgetcwd(void)
 		die_errno(_("unable to get current working directory"));
 	return strbuf_detach(&sb, NULL);
 }
+
+int write_file(const char *path, int fatal, const char *fmt, ...)
+{
+	struct strbuf sb =3D STRBUF_INIT;
+	va_list params;
+	int fd =3D open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
+	if (fd < 0) {
+		if (fatal)
+			die_errno(_("could not open %s for writing"), path);
+		return -1;
+	}
+	va_start(params, fmt);
+	strbuf_vaddf(&sb, fmt, params);
+	va_end(params);
+	if (write_in_full(fd, sb.buf, sb.len) !=3D sb.len) {
+		int err =3D errno;
+		close(fd);
+		strbuf_release(&sb);
+		errno =3D err;
+		if (fatal)
+			die_errno(_("could not write to %s"), path);
+		return -1;
+	}
+	strbuf_release(&sb);
+	if (close(fd)) {
+		if (fatal)
+			die_errno(_("could not close %s"), path);
+		return -1;
+	}
+	return 0;
+}
--=20
2.1.0.rc0.78.gc0d8480