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-rw-r--r--toys/posix/tar.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/toys/posix/tar.c b/toys/posix/tar.c
index cfeedcba..c073bbe6 100644
--- a/toys/posix/tar.c
+++ b/toys/posix/tar.c
@@ -646,6 +646,11 @@ static void do_XT(char **pline, long len)
if (pline) trim2list(TT.X ? &TT.excl : &TT.incl, *pline);
}
+static char *compression_tool()
+{
+ return FLAG(z) ? "gzip" : (FLAG(J) ? "xz" : "bzip2");
+}
+
void tar_main(void)
{
char *s, **args = toys.optargs;
@@ -658,7 +663,7 @@ void tar_main(void)
if (!geteuid()) toys.optflags |= FLAG_p;
if (TT.owner) TT.ouid = xgetuid(TT.owner);
if (TT.group) TT.ggid = xgetgid(TT.group);
- if (TT.mtime) xparsedate(TT.mtime, &TT.mtt, (void *)&s, 1);
+ if (TT.mtime) xparsedate(TT.mtime, &TT.mtt, (void *)&s, 1);
// Collect file list.
for (; TT.exclude; TT.exclude = TT.exclude->next)
@@ -717,11 +722,8 @@ void tar_main(void)
if (FLAG(j)||FLAG(z)||FLAG(J)) {
int pipefd[2] = {hdr ? -1 : TT.fd, -1}, i, pid;
- char *cmd[] = {"bzcat", 0};
- if (FLAG(J)) cmd[0] = "xzcat";
- else if FLAG(z) cmd[0]++;
- xpopen_both(cmd, pipefd);
+ xpopen_both((char *[]){compression_tool(), "-dc", NULL}, pipefd);
if (!hdr) {
// If we could seek, child gzip inherited fd and we read its output
@@ -790,8 +792,7 @@ void tar_main(void)
if (FLAG(j)||FLAG(z)||FLAG(J)) {
int pipefd[2] = {-1, TT.fd};
- xpopen_both((char *[]){FLAG(z)?"gzip":FLAG(J)?"xz":"bzip2", "-f", NULL},
- pipefd);
+ xpopen_both((char *[]){compression_tool(), "-f", NULL}, pipefd);
close(TT.fd);
TT.fd = pipefd[0];
}