diff options
| -rw-r--r-- | extras/browse.c | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/extras/browse.c b/extras/browse.c index 1cd2cf1..79042eb 100644 --- a/extras/browse.c +++ b/extras/browse.c @@ -1,3 +1,4 @@ +#include "sqfs/data_reader.h" #include "sqfs/compressor.h" #include "sqfs/dir_reader.h" #include "sqfs/id_table.h" @@ -20,6 +21,7 @@ static sqfs_dir_reader_t *dr; static sqfs_super_t super; static sqfs_inode_generic_t *working_dir; static sqfs_id_table_t *idtbl; +static sqfs_data_reader_t *data; static void change_directory(const char *dirname) { @@ -386,6 +388,49 @@ fail_resolve: return; } +static void cat_cmd(const char *filename) +{ + sqfs_inode_generic_t *inode, *root; + sqfs_u64 offset = 0; + char buffer[512]; + sqfs_s32 diff; + int ret; + + if (filename == NULL) { + printf("Missing argument: file name\n"); + return; + } + + if (*filename == '/') { + sqfs_dir_reader_get_root_inode(dr, &root); + ret = sqfs_dir_reader_find_by_path(dr, root, filename, &inode); + free(root); + } else { + ret = sqfs_dir_reader_find_by_path(dr, working_dir, + filename, &inode); + } + + if (ret) { + printf("Error resolving '%s', error code %d\n", filename, ret); + return; + } + + for (;;) { + diff = sqfs_data_reader_read(data, inode, offset, buffer, + sizeof(buffer)); + if (diff == 0) + break; + if (diff < 0) { + printf("Error reading from file '%s', error code %d\n", + filename, diff); + break; + } + + fwrite(buffer, 1, diff, stdout); + offset += diff; + } +} + static const struct { const char *cmd; @@ -394,6 +439,7 @@ static const struct { { "ls", list_directory }, { "cd", change_directory }, { "stat", stat_cmd }, + { "cat", cat_cmd }, }; int main(int argc, char **argv) @@ -460,7 +506,7 @@ int main(int argc, char **argv) goto out_id; } - /* create a directory reader and scan the entire directory hiearchy */ + /* create a directory reader and get the root inode */ dr = sqfs_dir_reader_create(&super, cmp, file); if (dr == NULL) { fprintf(stderr, "%s: error creating directory reader.\n", @@ -470,6 +516,21 @@ int main(int argc, char **argv) if (sqfs_dir_reader_get_root_inode(dr, &working_dir)) { fprintf(stderr, "%s: error reading root inode.\n", argv[1]); + goto out_dir; + } + + /* create a data reader */ + data = sqfs_data_reader_create(file, super.block_size, cmp); + + if (data == NULL) { + fprintf(stderr, "%s: error creating data reader.\n", + argv[1]); + goto out_dir; + } + + if (sqfs_data_reader_load_fragment_table(data, &super)) { + fprintf(stderr, "%s: error loading fragment table.\n", + argv[1]); goto out; } @@ -514,6 +575,8 @@ int main(int argc, char **argv) status = EXIT_SUCCESS; free(buffer); out: + sqfs_data_reader_destroy(data); +out_dir: if (working_dir != NULL) free(working_dir); sqfs_dir_reader_destroy(dr); |