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authorSascha Hauer <s.hauer@pengutronix.de>2014-07-17 08:12:09 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2014-07-22 08:11:08 +0200
commit057a57448debbb942babf0a307294a9022863760 (patch)
tree528d0f2e32895752c6c85c99c09b9c369b732cf8 /common/file-list.c
parent55ebc3849381d7f9e139762aa13e9e2a512fdbd2 (diff)
downloadbarebox-057a57448debbb942babf0a307294a9022863760.tar.gz
Add function to parse a string in dfu format
The dfu command parses a string which contains a list of devices and flags. This format is useful for other users aswell, so add common helper functions to parse it and let the dfu command use this format. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/file-list.c')
-rw-r--r--common/file-list.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/common/file-list.c b/common/file-list.c
new file mode 100644
index 0000000..90c0f42
--- /dev/null
+++ b/common/file-list.c
@@ -0,0 +1,113 @@
+#include <common.h>
+#include <malloc.h>
+#include <fs.h>
+#include <file-list.h>
+#include <linux/err.h>
+
+#define PARSE_DEVICE 0
+#define PARSE_NAME 1
+#define PARSE_FLAGS 2
+
+static int file_list_parse_one(struct file_list *files, const char *partstr, const char **endstr)
+{
+ int i = 0, state = PARSE_DEVICE;
+ char filename[PATH_MAX];
+ char name[PATH_MAX];
+ struct file_list_entry *entry = xzalloc(sizeof(*entry));
+
+ memset(filename, 0, sizeof(filename));
+ memset(name, 0, sizeof(name));
+
+ while (*partstr && *partstr != ',') {
+ switch (state) {
+ case PARSE_DEVICE:
+ if (*partstr == '(') {
+ state = PARSE_NAME;
+ i = 0;
+ } else {
+ filename[i++] = *partstr;
+ }
+ break;
+ case PARSE_NAME:
+ if (*partstr == ')') {
+ state = PARSE_FLAGS;
+ i = 0;
+ } else {
+ name[i++] = *partstr;
+ }
+ break;
+ case PARSE_FLAGS:
+ switch (*partstr) {
+ case 's':
+ entry->flags |= FILE_LIST_FLAG_SAFE;
+ break;
+ case 'r':
+ entry->flags |= FILE_LIST_FLAG_READBACK;
+ break;
+ case 'c':
+ entry->flags |= FILE_LIST_FLAG_CREATE;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ partstr++;
+ }
+
+ if (state != PARSE_FLAGS)
+ return -EINVAL;
+
+ entry->name = xstrdup(name);
+ entry->filename = xstrdup(filename);
+ if (*partstr == ',')
+ partstr++;
+ *endstr = partstr;
+
+ list_add_tail(&entry->list, &files->list);
+
+ return 0;
+}
+
+struct file_list *file_list_parse(const char *str)
+{
+ struct file_list *files;
+ int ret;
+ const char *endptr;
+
+ files = xzalloc(sizeof(*files));
+
+ INIT_LIST_HEAD(&files->list);
+
+ while (*str) {
+ if (file_list_parse_one(files, str, &endptr)) {
+ printf("parse error\n");
+ ret = -EINVAL;
+ goto out;
+ }
+ str = endptr;
+
+ files->num_entries++;
+ }
+
+ return files;
+out:
+ free(files);
+
+ return ERR_PTR(ret);
+}
+
+void file_list_free(struct file_list *files)
+{
+ struct file_list_entry *entry, *tmp;
+
+ list_for_each_entry_safe(entry, tmp, &files->list, list) {
+ free(entry->name);
+ free(entry->filename);
+ free(entry);
+ }
+
+ free(files);
+}