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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-09-05 00:50:20 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2020-09-16 09:34:35 +0200
commitc1a2cb729bd5bb5fdadf00cb3968bbc541f79750 (patch)
tree2ac559821173f8af5e04ab3e3be0cf80178c5c92 /bin/sqfs2tar/options.c
parent5f637f97c3427dc6e1a68678aefee1f62ca34d62 (diff)
Implement output compression support for sqfs2tar
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'bin/sqfs2tar/options.c')
-rw-r--r--bin/sqfs2tar/options.c37
1 files changed, 35 insertions, 2 deletions
diff --git a/bin/sqfs2tar/options.c b/bin/sqfs2tar/options.c
index e5c8319..356913a 100644
--- a/bin/sqfs2tar/options.c
+++ b/bin/sqfs2tar/options.c
@@ -7,6 +7,7 @@
#include "sqfs2tar.h"
static struct option long_opts[] = {
+ { "compressor", required_argument, NULL, 'c' },
{ "subdir", required_argument, NULL, 'd' },
{ "keep-as-dir", no_argument, NULL, 'k' },
{ "root-becomes", required_argument, NULL, 'r' },
@@ -18,7 +19,7 @@ static struct option long_opts[] = {
{ NULL, 0, NULL, 0 },
};
-static const char *short_opts = "d:kr:sXLhV";
+static const char *short_opts = "c:d:kr:sXLhV";
static const char *usagestr =
"Usage: sqfs2tar [OPTIONS...] <sqfsfile>\n"
@@ -28,6 +29,9 @@ static const char *usagestr =
"\n"
"Possible options:\n"
"\n"
+" --compressor, -c <name> If set, stream compress the resulting tarball.\n"
+" By default, the tarball is uncompressed.\n"
+"\n"
" --subdir, -d <dir> Unpack the given sub directory instead of the\n"
" filesystem root. Can be specified more than\n"
" once to select multiple directories. If only\n"
@@ -63,7 +67,8 @@ static const char *usagestr =
"\tsqfs2tar rootfs.sqfs > rootfs.tar\n"
"\tsqfs2tar rootfs.sqfs | gzip > rootfs.tar.gz\n"
"\tsqfs2tar rootfs.sqfs | xz > rootfs.tar.xz\n"
-"\n";
+"\n"
+"Available compressors:\n";
bool dont_skip = false;
bool keep_as_dir = false;
@@ -74,12 +79,14 @@ char *root_becomes = NULL;
char **subdirs = NULL;
size_t num_subdirs = 0;
static size_t max_subdirs = 0;
+int compressor = 0;
const char *filename = NULL;
void process_args(int argc, char **argv)
{
size_t idx, new_count;
+ const char *name;
int i, ret;
void *new;
@@ -89,6 +96,21 @@ void process_args(int argc, char **argv)
break;
switch (i) {
+ case 'c':
+ compressor = fstream_compressor_id_from_name(optarg);
+ if (compressor <= 0) {
+ fprintf(stderr, "unknown compressor '%s'.\n",
+ optarg);
+ goto fail;
+ }
+
+ if (!fstream_compressor_exists(compressor)) {
+ fprintf(stderr,
+ "%s compressor is not supported.\n",
+ optarg);
+ goto fail;
+ }
+ break;
case 'd':
if (num_subdirs == max_subdirs) {
new_count = max_subdirs ? max_subdirs * 2 : 16;
@@ -146,6 +168,17 @@ void process_args(int argc, char **argv)
break;
case 'h':
fputs(usagestr, stdout);
+
+ i = FSTREAM_COMPRESSOR_MIN;
+
+ while (i <= FSTREAM_COMPRESSOR_MAX) {
+ name = fstream_compressor_name_from_id(i);
+ if (fstream_compressor_exists(i))
+ printf("\t%s\n", name);
+ ++i;
+ }
+
+ fputc('\n', stdout);
goto out_success;
case 'V':
print_version("sqfs2tar");