Changeset 9553d7d in mainline

Timestamp:

2011-06-21T13:11:21Z (13 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

2d0d637

Parents:

4372b49

Message:

Implement str_to_utf16 function.

Location:

uspace/srv/fs/fat

Files:

• fat_dentry.c (modified) (1 diff)
• fat_dentry.h (modified) (1 diff)

uspace/srv/fs/fat/fat_dentry.c

@@ -361 +361 @@
 }
 
+/** Convert string to utf16 string.
+ *
+ * Convert string @a src to wide string. The output is written to the
+ * buffer specified by @a dest and @a dlen. @a dlen must be non-zero
+ * and the wide string written will always be null-terminated.
+ *
+ * @param dest  Destination buffer.
+ * @param dlen  Length of destination buffer (number of wchars).
+ * @param src   Source string.
+ */
+int str_to_utf16(uint16_t *dest, size_t dlen, const char *src)
+{
+        size_t offset;
+        size_t di;
+        uint16_t c;
+
+        assert(dlen > 0);
+
+        offset = 0;
+        di = 0;
+
+        do {
+                if (di >= dlen - 1)
+                        return EOVERFLOW;
+
+                c = str_decode(src, &offset, STR_NO_LIMIT);
+                dest[di++] = c;
+        } while (c != '\0');
+
+        dest[dlen - 1] = '\0';
+        return EOK;
+}
+
 
 /**

uspace/srv/fs/fat/fat_dentry.h

@@ -141 +141 @@
 extern size_t fat_lfn_copy_entry(const fat_dentry_t *, uint16_t *, size_t *);
 extern int utf16_to_str(char *, size_t, const uint16_t *);
+extern int str_to_utf16(uint16_t *, size_t, const char *);