read_utf8_file_contents(): Move check for BOM here

[wimlib] / src / pathlist.c

diff --git a/src/pathlist.c b/src/pathlist.c
index ada1f302f119b1238a3d6489a1f84f140af43f4c..e14c1877aaa549f807ebbd781682a0d9e20f16a3 100644 (file)
--- a/src/pathlist.c
+++ b/src/pathlist.c
@@ -90,6 +90,7 @@ read_utf8_file_contents(const tchar *path, tchar **buf_ret, size_t *buflen_ret)
        int ret;
        char *buf_utf8;
        size_t bufsize_utf8;
+       size_t offset_utf8;
        tchar *buf_tstr;
        size_t bufsize_tstr;
 
@@ -97,7 +98,15 @@ read_utf8_file_contents(const tchar *path, tchar **buf_ret, size_t *buflen_ret)
        if (ret)
                return ret;
 
-       ret = utf8_to_tstr(buf_utf8, bufsize_utf8, &buf_tstr, &bufsize_tstr);
+       /* Ignore UTF-8 BOM.  */
+       if (bufsize_utf8 >= 3 && (u8)buf_utf8[0] == 0xef &&
+           (u8)buf_utf8[1] == 0xbb && (u8)buf_utf8[2] == 0xbf)
+               offset_utf8 = 3;
+       else
+               offset_utf8 = 0;
+
+       ret = utf8_to_tstr(buf_utf8 + offset_utf8, bufsize_utf8 - offset_utf8,
+                          &buf_tstr, &bufsize_tstr);
        FREE(buf_utf8);
        if (ret)
                return ret;