diff options
Diffstat (limited to 'bin/sqfs2tar/options.c')
| -rw-r--r-- | bin/sqfs2tar/options.c | 37 |
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"); |