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-rw-r--r--archive.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/archive.c b/archive.c
index e6de039..c6aea83 100644
--- a/archive.c
+++ b/archive.c
@@ -239,6 +239,19 @@ static void parse_treeish_arg(const char **argv,
ar_args->time = archive_time;
}
+static void create_output_file(const char *output_file)
+{
+ int output_fd = open(output_file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ if (output_fd < 0)
+ die("could not create archive file: %s ", output_file);
+ if (output_fd != 1) {
+ if (dup2(output_fd, 1) < 0)
+ die("could not redirect output");
+ else
+ close(output_fd);
+ }
+}
+
#define OPT__COMPR(s, v, h, p) \
{ OPTION_SET_INT, (s), NULL, (v), NULL, (h), \
PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, (p) }
@@ -253,6 +266,7 @@ static int parse_archive_args(int argc, const char **argv,
const char *base = NULL;
const char *remote = NULL;
const char *exec = NULL;
+ const char *output = NULL;
int compression_level = -1;
int verbose = 0;
int i;
@@ -262,6 +276,8 @@ static int parse_archive_args(int argc, const char **argv,
OPT_STRING(0, "format", &format, "fmt", "archive format"),
OPT_STRING(0, "prefix", &base, "prefix",
"prepend prefix to each pathname in the archive"),
+ OPT_STRING(0, "output", &output, "file",
+ "write the archive to this file"),
OPT__VERBOSE(&verbose),
OPT__COMPR('0', &compression_level, "store only", 0),
OPT__COMPR('1', &compression_level, "compress faster", 1),
@@ -294,6 +310,9 @@ static int parse_archive_args(int argc, const char **argv,
if (!base)
base = "";
+ if (output)
+ create_output_file(output);
+
if (list) {
for (i = 0; i < ARRAY_SIZE(archivers); i++)
printf("%s\n", archivers[i].name);