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[Emacs-diffs] master f9659e6 2/2: Module API: Don’t require null-termin


From: Philipp Stephani
Subject: [Emacs-diffs] master f9659e6 2/2: Module API: Don’t require null-terminated strings in make_string.
Date: Mon, 22 Apr 2019 09:44:57 -0400 (EDT)

branch: master
commit f9659e648cd06a9322b501168b1af8ede7d1ae16
Author: Philipp Stephani <address@hidden>
Commit: Philipp Stephani <address@hidden>

    Module API: Don’t require null-terminated strings in make_string.
    
    * emacs-module.c (module_make_string): Use make_unibyte_string, which
    doesn’t require its argument to be null-terminated.  Since it always
    returns a heap-allocated string, we don’t have to copy it any more
    while decoding.
    (module_decode): New helper function.
---
 src/emacs-module.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/emacs-module.c b/src/emacs-module.c
index 8fd2a87..20dcff2 100644
--- a/src/emacs-module.c
+++ b/src/emacs-module.c
@@ -212,6 +212,7 @@ static void module_reset_handlerlist (struct handler **);
 static bool value_storage_contains_p (const struct emacs_value_storage *,
                                       emacs_value, ptrdiff_t *);
 static Lisp_Object module_encode (Lisp_Object);
+static Lisp_Object module_decode (Lisp_Object);
 static Lisp_Object module_decode_copy (Lisp_Object);
 
 static bool module_assertions = false;
@@ -629,10 +630,8 @@ module_make_string (emacs_env *env, const char *str, 
ptrdiff_t length)
   MODULE_FUNCTION_BEGIN (NULL);
   if (! (0 <= length && length <= STRING_BYTES_BOUND))
     overflow_error ();
-  /* FIXME: AUTO_STRING_WITH_LEN requires STR to be NUL-terminated,
-     but we shouldn't require that.  */
-  AUTO_STRING_WITH_LEN (lstr, str, length);
-  return lisp_to_value (env, module_decode_copy (lstr));
+  Lisp_Object lstr = make_unibyte_string (str, length);
+  return lisp_to_value (env, module_decode (lstr));
 }
 
 static emacs_value
@@ -947,6 +946,12 @@ module_encode (Lisp_Object string)
 }
 
 static Lisp_Object
+module_decode (Lisp_Object string)
+{
+  return code_convert_string (string, Qutf_8_unix, Qt, false, true, true);
+}
+
+static Lisp_Object
 module_decode_copy (Lisp_Object string)
 {
   return code_convert_string (string, Qutf_8_unix, Qt, false, false, true);



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