[template-glib] token: remove use of sscanf()

[Christian Hergert <chergert src gnome org>]

commit 0fd40ba9ef390a913dc28ab32060d7fd331b8946
Author: Christian Hergert <christian hergert me>
Date:   Wed May 11 14:59:05 2022 -0700

    token: remove use of sscanf()
    
    This fixes things to work where we don't have non-standard sscanf features
    such as on macOS.

 src/tmpl-token.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)
---
diff --git a/src/tmpl-token.c b/src/tmpl-token.c
index 16ab375..9eae916 100644
--- a/src/tmpl-token.c
+++ b/src/tmpl-token.c
@@ -102,19 +102,32 @@ tmpl_token_type (TmplToken *self)
 gchar *
 tmpl_token_include_get_path (TmplToken *self)
 {
+  const char *str;
   char *path = NULL;
 
   g_return_val_if_fail (self != NULL, NULL);
   g_return_val_if_fail (self->type == TMPL_TOKEN_INCLUDE, NULL);
 
-  if (1 == sscanf (self->text, "include \"%m[^\"]", &path))
+  str = self->text;
+
+  if (!g_str_has_prefix (str, "include "))
+    return NULL;
+
+  str += strlen ("include ");
+  while (*str == ' ') str++;
+  if (str[0] != '"')
+    return NULL;
+  path = g_strdup (str+1);
+
+  if (path[0] == 0 || path[strlen(path)-1] != '"')
     {
-      gchar *tmp = g_strdup (path);
-      free (path);
-      return tmp;
+      g_free (path);
+      return NULL;
     }
 
-  return NULL;
+  path[strlen(path)-1] = 0;
+
+  return path;
 }
 
 TmplToken *