1 files changed, 0 insertions, 155 deletions
diff --git a/sys/src/cmd/python/Extra/mercurial/base85.c b/sys/src/cmd/python/Extra/mercurial/base85.c
deleted file mode 100644
index 3e6c0614c..000000000
--- a/sys/src/cmd/python/Extra/mercurial/base85.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- base85 codec
-
- Copyright 2006 Brendan Cully <brendan@kublai.com>
-
- This software may be used and distributed according to the terms of
- the GNU General Public License, incorporated herein by reference.
-
- Largely based on git's implementation
-*/
-
-#include <Python.h>
-
-static const char b85chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-	"abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~";
-static char b85dec[256];
-
-static void
-b85prep(void)
-{
-	int i;
-
-	memset(b85dec, 0, sizeof(b85dec));
-	for (i = 0; i < sizeof(b85chars); i++)
-		b85dec[(int)(b85chars[i])] = i + 1;
-}
-
-static PyObject *
-b85encode(PyObject *self, PyObject *args)
-{
-	const unsigned char *text;
-	PyObject *out;
-	char *dst;
-	int len, olen, i;
-	unsigned int acc, val, ch;
-	int pad = 0;
-
-	if (!PyArg_ParseTuple(args, "s#|i", &text, &len, &pad))
-		return NULL;
-
-	if (pad)
-		olen = ((len + 3) / 4 * 5) - 3;
-	else {
-		olen = len % 4;
-		if (olen)
-			olen++;
-		olen += len / 4 * 5;
-	}
-	if (!(out = PyString_FromStringAndSize(NULL, olen + 3)))
-		return NULL;
-
-	dst = PyString_AS_STRING(out);
-
-	while (len) {
-		acc = 0;
-		for (i = 24; i >= 0; i -= 8) {
-			ch = *text++;
-			acc |= ch << i;
-			if (--len == 0)
-				break;
-		}
-		for (i = 4; i >= 0; i--) {
-			val = acc % 85;
-			acc /= 85;
-			dst[i] = b85chars[val];
-		}
-		dst += 5;
-	}
-
-	if (!pad)
-		_PyString_Resize(&out, olen);
-
-	return out;
-}
-
-static PyObject *
-b85decode(PyObject *self, PyObject *args)
-{
-	PyObject *out;
-	const char *text;
-	char *dst;
-	int len, i, j, olen, c, cap;
-	unsigned int acc;
-
-	if (!PyArg_ParseTuple(args, "s#", &text, &len))
-		return NULL;
-
-	olen = len / 5 * 4;
-	i = len % 5;
-	if (i)
-		olen += i - 1;
-	if (!(out = PyString_FromStringAndSize(NULL, olen)))
-		return NULL;
-
-	dst = PyString_AS_STRING(out);
-
-	i = 0;
-	while (i < len)
-	{
-		acc = 0;
-		cap = len - i - 1;
-		if (cap > 4)
-			cap = 4;
-		for (j = 0; j < cap; i++, j++)
-		{
-			c = b85dec[(int)*text++] - 1;
-			if (c < 0)
-				return PyErr_Format(PyExc_ValueError, "Bad base85 character at position %d", i);
-			acc = acc * 85 + c;
-		}
-		if (i++ < len)
-		{
-			c = b85dec[(int)*text++] - 1;
-			if (c < 0)
-				return PyErr_Format(PyExc_ValueError, "Bad base85 character at position %d", i);
-			/* overflow detection: 0xffffffff == "|NsC0",
-			 * "|NsC" == 0x03030303 */
-			if (acc > 0x03030303 || (acc *= 85) > 0xffffffff - c)
-				return PyErr_Format(PyExc_ValueError, "Bad base85 sequence at position %d", i);
-			acc += c;
-		}
-
-		cap = olen < 4 ? olen : 4;
-		olen -= cap;
-		for (j = 0; j < 4 - cap; j++)
-			acc *= 85;
-		if (cap && cap < 4)
-			acc += 0xffffff >> (cap - 1) * 8;
-		for (j = 0; j < cap; j++)
-		{
-			acc = (acc << 8) | (acc >> 24);
-			*dst++ = acc;
-		}
-	}
-
-	return out;
-}
-
-static char base85_doc[] = "Base85 Data Encoding";
-
-static PyMethodDef methods[] = {
-	{"b85encode", b85encode, METH_VARARGS,
-	 "Encode text in base85.\n\n"
-	 "If the second parameter is true, pad the result to a multiple of "
-	 "five characters.\n"},
-	{"b85decode", b85decode, METH_VARARGS, "Decode base85 text.\n"},
-	{NULL, NULL}
-};
-
-PyMODINIT_FUNC initbase85(void)
-{
-	Py_InitModule3("base85", methods, base85_doc);
-
-	b85prep();
-}