# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1471058338 -32400
# Node ID 151cc3b3d799e41983ec6e77fc01138755dc8761
# Parent  017ad85e5ac82d520d4ef78d326d3c1509f16282
mpatch: switch to policy importer

diff -r 017ad85e5ac8 -r 151cc3b3d799 contrib/check-py3-compat.py
--- a/contrib/check-py3-compat.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/contrib/check-py3-compat.py	Sat Aug 13 12:18:58 2016 +0900
@@ -17,7 +17,6 @@
 
 # Modules that have both Python and C implementations.
 _dualmodules = (
-    'mpatch.py',
     'parsers.py',
 )
 
diff -r 017ad85e5ac8 -r 151cc3b3d799 contrib/import-checker.py
--- a/contrib/import-checker.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/contrib/import-checker.py	Sat Aug 13 12:18:58 2016 +0900
@@ -26,7 +26,6 @@
 
 # Modules that have both Python and C implementations.
 _dualmodules = (
-    'mpatch.py',
     'parsers.py',
 )
 
diff -r 017ad85e5ac8 -r 151cc3b3d799 contrib/wix/dist.wxs
--- a/contrib/wix/dist.wxs	Sat Aug 13 12:15:49 2016 +0900
+++ b/contrib/wix/dist.wxs	Sat Aug 13 12:18:58 2016 +0900
@@ -15,7 +15,7 @@
           <File Name="mercurial.cext.base85.pyd" />
           <File Name="mercurial.cext.bdiff.pyd" />
           <File Name="mercurial.cext.diffhelpers.pyd" />
-          <File Name="mercurial.mpatch.pyd" />
+          <File Name="mercurial.cext.mpatch.pyd" />
           <File Name="mercurial.cext.osutil.pyd" />
           <File Name="mercurial.parsers.pyd" />
           <File Name="pyexpat.pyd" />
diff -r 017ad85e5ac8 -r 151cc3b3d799 mercurial/__init__.py
--- a/mercurial/__init__.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/mercurial/__init__.py	Sat Aug 13 12:18:58 2016 +0900
@@ -23,7 +23,6 @@
 # Modules that have both Python and C implementations. See also the
 # set of .py files under mercurial/pure/.
 _dualmodules = {
-    'mercurial.mpatch',
     'mercurial.parsers',
 }
 
diff -r 017ad85e5ac8 -r 151cc3b3d799 mercurial/cext/mpatch.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/cext/mpatch.c	Sat Aug 13 12:18:58 2016 +0900
@@ -0,0 +1,200 @@
+/*
+ mpatch.c - efficient binary patching for Mercurial
+
+ This implements a patch algorithm that's O(m + nlog n) where m is the
+ size of the output and n is the number of patches.
+
+ Given a list of binary patches, it unpacks each into a hunk list,
+ then combines the hunk lists with a treewise recursion to form a
+ single hunk list. This hunk list is then applied to the original
+ text.
+
+ The text (or binary) fragments are copied directly from their source
+ Python objects into a preallocated output string to avoid the
+ allocation of intermediate Python objects. Working memory is about 2x
+ the total number of hunks.
+
+ Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+*/
+
+#define PY_SSIZE_T_CLEAN
+#include <Python.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util.h"
+#include "bitmanipulation.h"
+#include "compat.h"
+#include "mpatch.h"
+
+static char mpatch_doc[] = "Efficient binary patching.";
+static PyObject *mpatch_Error;
+
+static void setpyerr(int r)
+{
+	switch (r) {
+	case MPATCH_ERR_NO_MEM:
+		PyErr_NoMemory();
+		break;
+	case MPATCH_ERR_CANNOT_BE_DECODED:
+		PyErr_SetString(mpatch_Error, "patch cannot be decoded");
+		break;
+	case MPATCH_ERR_INVALID_PATCH:
+		PyErr_SetString(mpatch_Error, "invalid patch");
+		break;
+	}
+}
+
+struct mpatch_flist *cpygetitem(void *bins, ssize_t pos)
+{
+	const char *buffer;
+	struct mpatch_flist *res;
+	ssize_t blen;
+	int r;
+
+	PyObject *tmp = PyList_GetItem((PyObject*)bins, pos);
+	if (!tmp)
+		return NULL;
+	if (PyObject_AsCharBuffer(tmp, &buffer, (Py_ssize_t*)&blen))
+		return NULL;
+	if ((r = mpatch_decode(buffer, blen, &res)) < 0) {
+		if (!PyErr_Occurred())
+			setpyerr(r);
+		return NULL;
+	}
+	return res;
+}
+
+static PyObject *
+patches(PyObject *self, PyObject *args)
+{
+	PyObject *text, *bins, *result;
+	struct mpatch_flist *patch;
+	const char *in;
+	int r = 0;
+	char *out;
+	Py_ssize_t len, outlen, inlen;
+
+	if (!PyArg_ParseTuple(args, "OO:mpatch", &text, &bins))
+		return NULL;
+
+	len = PyList_Size(bins);
+	if (!len) {
+		/* nothing to do */
+		Py_INCREF(text);
+		return text;
+	}
+
+	if (PyObject_AsCharBuffer(text, &in, &inlen))
+		return NULL;
+
+	patch = mpatch_fold(bins, cpygetitem, 0, len);
+	if (!patch) { /* error already set or memory error */
+		if (!PyErr_Occurred())
+			PyErr_NoMemory();
+		return NULL;
+	}
+
+	outlen = mpatch_calcsize(inlen, patch);
+	if (outlen < 0) {
+		r = (int)outlen;
+		result = NULL;
+		goto cleanup;
+	}
+	result = PyBytes_FromStringAndSize(NULL, outlen);
+	if (!result) {
+		result = NULL;
+		goto cleanup;
+	}
+	out = PyBytes_AsString(result);
+	if ((r = mpatch_apply(out, in, inlen, patch)) < 0) {
+		Py_DECREF(result);
+		result = NULL;
+	}
+cleanup:
+	mpatch_lfree(patch);
+	if (!result && !PyErr_Occurred())
+		setpyerr(r);
+	return result;
+}
+
+/* calculate size of a patched file directly */
+static PyObject *
+patchedsize(PyObject *self, PyObject *args)
+{
+	long orig, start, end, len, outlen = 0, last = 0, pos = 0;
+	Py_ssize_t patchlen;
+	char *bin;
+
+	if (!PyArg_ParseTuple(args, "ls#", &orig, &bin, &patchlen))
+		return NULL;
+
+	while (pos >= 0 && pos < patchlen) {
+		start = getbe32(bin + pos);
+		end = getbe32(bin + pos + 4);
+		len = getbe32(bin + pos + 8);
+		if (start > end)
+			break; /* sanity check */
+		pos += 12 + len;
+		outlen += start - last;
+		last = end;
+		outlen += len;
+	}
+
+	if (pos != patchlen) {
+		if (!PyErr_Occurred())
+			PyErr_SetString(mpatch_Error, "patch cannot be decoded");
+		return NULL;
+	}
+
+	outlen += orig - last;
+	return Py_BuildValue("l", outlen);
+}
+
+static PyMethodDef methods[] = {
+	{"patches", patches, METH_VARARGS, "apply a series of patches\n"},
+	{"patchedsize", patchedsize, METH_VARARGS, "calculed patched size\n"},
+	{NULL, NULL}
+};
+
+static const int version = 1;
+
+#ifdef IS_PY3K
+static struct PyModuleDef mpatch_module = {
+	PyModuleDef_HEAD_INIT,
+	"mpatch",
+	mpatch_doc,
+	-1,
+	methods
+};
+
+PyMODINIT_FUNC PyInit_mpatch(void)
+{
+	PyObject *m;
+
+	m = PyModule_Create(&mpatch_module);
+	if (m == NULL)
+		return NULL;
+
+	mpatch_Error = PyErr_NewException("mercurial.cext.mpatch.mpatchError",
+					  NULL, NULL);
+	Py_INCREF(mpatch_Error);
+	PyModule_AddObject(m, "mpatchError", mpatch_Error);
+	PyModule_AddIntConstant(m, "version", version);
+
+	return m;
+}
+#else
+PyMODINIT_FUNC
+initmpatch(void)
+{
+	PyObject *m;
+	m = Py_InitModule3("mpatch", methods, mpatch_doc);
+	mpatch_Error = PyErr_NewException("mercurial.cext.mpatch.mpatchError",
+					  NULL, NULL);
+	PyModule_AddIntConstant(m, "version", version);
+}
+#endif
diff -r 017ad85e5ac8 -r 151cc3b3d799 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/mercurial/debugcommands.py	Sat Aug 13 12:18:58 2016 +0900
@@ -1025,12 +1025,10 @@
     if policy.policy in ('c', 'allow'):
         err = None
         try:
-            from . import (
-                mpatch,
-            )
             from .cext import (
                 base85,
                 bdiff,
+                mpatch,
                 osutil,
             )
             dir(bdiff), dir(mpatch), dir(base85), dir(osutil) # quiet pyflakes
diff -r 017ad85e5ac8 -r 151cc3b3d799 mercurial/mdiff.py
--- a/mercurial/mdiff.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/mercurial/mdiff.py	Sat Aug 13 12:18:58 2016 +0900
@@ -14,13 +14,13 @@
 from .i18n import _
 from . import (
     error,
-    mpatch,
     policy,
     pycompat,
     util,
 )
 
 bdiff = policy.importmod(r'bdiff')
+mpatch = policy.importmod(r'mpatch')
 
 blocks = bdiff.blocks
 fixws = bdiff.fixws
diff -r 017ad85e5ac8 -r 151cc3b3d799 mercurial/mpatch_module.c
--- a/mercurial/mpatch_module.c	Sat Aug 13 12:15:49 2016 +0900
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,200 +0,0 @@
-/*
- mpatch.c - efficient binary patching for Mercurial
-
- This implements a patch algorithm that's O(m + nlog n) where m is the
- size of the output and n is the number of patches.
-
- Given a list of binary patches, it unpacks each into a hunk list,
- then combines the hunk lists with a treewise recursion to form a
- single hunk list. This hunk list is then applied to the original
- text.
-
- The text (or binary) fragments are copied directly from their source
- Python objects into a preallocated output string to avoid the
- allocation of intermediate Python objects. Working memory is about 2x
- the total number of hunks.
-
- Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-*/
-
-#define PY_SSIZE_T_CLEAN
-#include <Python.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "util.h"
-#include "bitmanipulation.h"
-#include "compat.h"
-#include "mpatch.h"
-
-static char mpatch_doc[] = "Efficient binary patching.";
-static PyObject *mpatch_Error;
-
-static void setpyerr(int r)
-{
-	switch (r) {
-	case MPATCH_ERR_NO_MEM:
-		PyErr_NoMemory();
-		break;
-	case MPATCH_ERR_CANNOT_BE_DECODED:
-		PyErr_SetString(mpatch_Error, "patch cannot be decoded");
-		break;
-	case MPATCH_ERR_INVALID_PATCH:
-		PyErr_SetString(mpatch_Error, "invalid patch");
-		break;
-	}
-}
-
-struct mpatch_flist *cpygetitem(void *bins, ssize_t pos)
-{
-	const char *buffer;
-	struct mpatch_flist *res;
-	ssize_t blen;
-	int r;
-
-	PyObject *tmp = PyList_GetItem((PyObject*)bins, pos);
-	if (!tmp)
-		return NULL;
-	if (PyObject_AsCharBuffer(tmp, &buffer, (Py_ssize_t*)&blen))
-		return NULL;
-	if ((r = mpatch_decode(buffer, blen, &res)) < 0) {
-		if (!PyErr_Occurred())
-			setpyerr(r);
-		return NULL;
-	}
-	return res;
-}
-
-static PyObject *
-patches(PyObject *self, PyObject *args)
-{
-	PyObject *text, *bins, *result;
-	struct mpatch_flist *patch;
-	const char *in;
-	int r = 0;
-	char *out;
-	Py_ssize_t len, outlen, inlen;
-
-	if (!PyArg_ParseTuple(args, "OO:mpatch", &text, &bins))
-		return NULL;
-
-	len = PyList_Size(bins);
-	if (!len) {
-		/* nothing to do */
-		Py_INCREF(text);
-		return text;
-	}
-
-	if (PyObject_AsCharBuffer(text, &in, &inlen))
-		return NULL;
-
-	patch = mpatch_fold(bins, cpygetitem, 0, len);
-	if (!patch) { /* error already set or memory error */
-		if (!PyErr_Occurred())
-			PyErr_NoMemory();
-		return NULL;
-	}
-
-	outlen = mpatch_calcsize(inlen, patch);
-	if (outlen < 0) {
-		r = (int)outlen;
-		result = NULL;
-		goto cleanup;
-	}
-	result = PyBytes_FromStringAndSize(NULL, outlen);
-	if (!result) {
-		result = NULL;
-		goto cleanup;
-	}
-	out = PyBytes_AsString(result);
-	if ((r = mpatch_apply(out, in, inlen, patch)) < 0) {
-		Py_DECREF(result);
-		result = NULL;
-	}
-cleanup:
-	mpatch_lfree(patch);
-	if (!result && !PyErr_Occurred())
-		setpyerr(r);
-	return result;
-}
-
-/* calculate size of a patched file directly */
-static PyObject *
-patchedsize(PyObject *self, PyObject *args)
-{
-	long orig, start, end, len, outlen = 0, last = 0, pos = 0;
-	Py_ssize_t patchlen;
-	char *bin;
-
-	if (!PyArg_ParseTuple(args, "ls#", &orig, &bin, &patchlen))
-		return NULL;
-
-	while (pos >= 0 && pos < patchlen) {
-		start = getbe32(bin + pos);
-		end = getbe32(bin + pos + 4);
-		len = getbe32(bin + pos + 8);
-		if (start > end)
-			break; /* sanity check */
-		pos += 12 + len;
-		outlen += start - last;
-		last = end;
-		outlen += len;
-	}
-
-	if (pos != patchlen) {
-		if (!PyErr_Occurred())
-			PyErr_SetString(mpatch_Error, "patch cannot be decoded");
-		return NULL;
-	}
-
-	outlen += orig - last;
-	return Py_BuildValue("l", outlen);
-}
-
-static PyMethodDef methods[] = {
-	{"patches", patches, METH_VARARGS, "apply a series of patches\n"},
-	{"patchedsize", patchedsize, METH_VARARGS, "calculed patched size\n"},
-	{NULL, NULL}
-};
-
-static const int version = 1;
-
-#ifdef IS_PY3K
-static struct PyModuleDef mpatch_module = {
-	PyModuleDef_HEAD_INIT,
-	"mpatch",
-	mpatch_doc,
-	-1,
-	methods
-};
-
-PyMODINIT_FUNC PyInit_mpatch(void)
-{
-	PyObject *m;
-
-	m = PyModule_Create(&mpatch_module);
-	if (m == NULL)
-		return NULL;
-
-	mpatch_Error = PyErr_NewException("mercurial.mpatch.mpatchError",
-					  NULL, NULL);
-	Py_INCREF(mpatch_Error);
-	PyModule_AddObject(m, "mpatchError", mpatch_Error);
-	PyModule_AddIntConstant(m, "version", version);
-
-	return m;
-}
-#else
-PyMODINIT_FUNC
-initmpatch(void)
-{
-	PyObject *m;
-	m = Py_InitModule3("mpatch", methods, mpatch_doc);
-	mpatch_Error = PyErr_NewException("mercurial.mpatch.mpatchError",
-					  NULL, NULL);
-	PyModule_AddIntConstant(m, "version", version);
-}
-#endif
diff -r 017ad85e5ac8 -r 151cc3b3d799 mercurial/pure/mpatch.py
--- a/mercurial/pure/mpatch.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/mercurial/pure/mpatch.py	Sat Aug 13 12:18:58 2016 +0900
@@ -9,7 +9,7 @@
 
 import struct
 
-from . import policy, pycompat
+from .. import policy, pycompat
 stringio = pycompat.stringio
 modulepolicy = policy.policy
 policynocffi = policy.policynocffi
@@ -167,4 +167,3 @@
             res = ffi.buffer(buf, outlen)[:]
             lib.mpatch_lfree(patch)
             return res
-
diff -r 017ad85e5ac8 -r 151cc3b3d799 setup.py
--- a/setup.py	Sat Aug 13 12:15:49 2016 +0900
+++ b/setup.py	Sat Aug 13 12:18:58 2016 +0900
@@ -631,8 +631,8 @@
     Extension('mercurial.cext.diffhelpers', ['mercurial/cext/diffhelpers.c'],
               include_dirs=common_include_dirs,
               depends=common_depends),
-    Extension('mercurial.mpatch', ['mercurial/mpatch.c',
-                                   'mercurial/mpatch_module.c'],
+    Extension('mercurial.cext.mpatch', ['mercurial/mpatch.c',
+                                        'mercurial/cext/mpatch.c'],
               include_dirs=common_include_dirs,
               depends=common_depends),
     Extension('mercurial.parsers', ['mercurial/dirs.c',
diff -r 017ad85e5ac8 -r 151cc3b3d799 tests/test-revlog.t
--- a/tests/test-revlog.t	Sat Aug 13 12:15:49 2016 +0900
+++ b/tests/test-revlog.t	Sat Aug 13 12:18:58 2016 +0900
@@ -12,4 +12,4 @@
        0         0      19     -1       2 99e0332bd498 000000000000 000000000000
        1        19      12      0       3 6674f57a23d8 99e0332bd498 000000000000
   $ hg debugdata a.i 1 2>&1 | egrep 'Error:.*decoded'
-  (mercurial.mpatch.)?mpatchError: patch cannot be decoded (re)
+  (mercurial\.\w+\.mpatch\.)?mpatchError: patch cannot be decoded (re)