[PATCH v2] store: rewrite fncache path mangling code in C

[Adrian Buehlmann]

On 2012-08-28 19:43, Bryan O'Sullivan wrote:
> # HG changeset patch
> # User Bryan O'Sullivan <bryano at fb.com>
> # Date 1346175814 25200
> # Node ID 91f70954e9d681a35130aa24f66aaa7148d8ee1b
> # Parent  99a2a4ae35e2180b7f825ef2677c36d538eac4ba
> store: rewrite fncache path mangling code in C
> 
> The Python path mangling code used by fncache

Ok. I got it working with the MS C compiler (and mingw32 [1]) with this
on top of your patch:


diff --git a/mercurial/pathencode.c b/mercurial/pathencode.c
--- a/mercurial/pathencode.c
+++ b/mercurial/pathencode.c
@@ -18,9 +18,18 @@
 #include <Python.h>
 #include <assert.h>
 #include <ctype.h>
-#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <malloc.h>
+
+#ifndef _MSC_VER
+#include <stdint.h>
+#else
+#define inline __inline
+typedef unsigned char uint8_t;
+typedef unsigned __int32 uint32_t;
+#endif
+

 /* state machine for the fast path */
 enum path_state {
@@ -601,10 +610,10 @@
 			     Py_ssize_t len)
 {
 	const Py_ssize_t baselen = (len - 5) * 3;
-	char dired[baselen];
-	char lowered[baselen];
-	char auxed[baselen];
-	char mangled[baselen];
+	char* dired = alloca(baselen);
+	char* lowered = alloca(baselen);
+	char* auxed = alloca(baselen);
+	char* mangled = alloca(baselen);
 	Py_ssize_t dirlen, lowerlen, auxlen, destlen;
 	char sha[20];


[1] python setup.py build_ext -i --compiler=mingw32