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-rw-r--r--extras/browse.c65
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);