Mercurial > hg
view mercurial/base85.c @ 29134:8d5584d8345b
graphmod: partial edge styling
Allow for a style to only apply to the last N lines (for positive N) or
everything but the first N lines (for negative N) of the section along the
current node. This allows for more subtle grandparent styling.
So from the default:
$ hg log -G ...
o Lorem ipsum dolor sit
:\ amet, consectetur
: : adipiscing elit, sed
: : do eiusmod tempor
: :
o : incididunt ut labore
| : et dolore magna
| : aliqua. Ut enim ad
| : minim veniam, quis
|/
o nostrud exercitation
: ullamco laboris nisi
: ut aliquip ex ea
: commodo consequat.
:
o Duis aute irure dolor
| in reprehenderit in
~ voluptate velit esse
cillum dolore eu
to
$ hg log -G --config "experimental.graphstyle.grandparent=2." ...
o Lorem ipsum dolor sit
|\ amet, consectetur
| | adipiscing elit, sed
. . do eiusmod tempor
. .
o | incididunt ut labore
| | et dolore magna
| | aliqua. Ut enim ad
| | minim veniam, quis
|/
o nostrud exercitation
| ullamco laboris nisi
| ut aliquip ex ea
. commodo consequat.
.
o Duis aute irure dolor
| in reprehenderit in
~ voluptate velit esse
cillum dolore eu
or
$ hg log -G --config "experimental.graphstyle.grandparent=1:" ...
o Lorem ipsum dolor sit
|\ amet, consectetur
| | adipiscing elit, sed
| | do eiusmod tempor
: :
o | incididunt ut labore
| | et dolore magna
| | aliqua. Ut enim ad
| | minim veniam, quis
|/
o nostrud exercitation
| ullamco laboris nisi
| ut aliquip ex ea
| commodo consequat.
:
o Duis aute irure dolor
| in reprehenderit in
~ voluptate velit esse
cillum dolore eu
or
$ hg log -G --config "experimental.graphstyle.grandparent=-2!" ...
o Lorem ipsum dolor sit
|\ amet, consectetur
! ! adipiscing elit, sed
! ! do eiusmod tempor
! !
o | incididunt ut labore
| | et dolore magna
| | aliqua. Ut enim ad
| | minim veniam, quis
|/
o nostrud exercitation
| ullamco laboris nisi
! ut aliquip ex ea
! commodo consequat.
!
o Duis aute irure dolor
| in reprehenderit in
~ voluptate velit esse
cillum dolore eu
author | Martijn Pieters <mjpieters@fb.com> |
---|---|
date | Wed, 04 May 2016 20:11:59 +0100 |
parents | 4613a89bea42 |
children | 7948adb53e28 |
line wrap: on
line source
/* 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 */ #define PY_SSIZE_T_CLEAN #include <Python.h> #include "util.h" static const char b85chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~"; static char b85dec[256]; static void b85prep(void) { unsigned 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; Py_ssize_t 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 = PyBytes_FromStringAndSize(NULL, olen + 3))) return NULL; dst = PyBytes_AsString(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) _PyBytes_Resize(&out, olen); return out; } static PyObject *b85decode(PyObject *self, PyObject *args) { PyObject *out; const char *text; char *dst; Py_ssize_t len, i, j, olen, cap; int c; 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 = PyBytes_FromStringAndSize(NULL, olen))) return NULL; dst = PyBytes_AsString(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", (int)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", (int)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", (int)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} }; #ifdef IS_PY3K static struct PyModuleDef base85_module = { PyModuleDef_HEAD_INIT, "base85", base85_doc, -1, methods }; PyMODINIT_FUNC PyInit_base85(void) { b85prep(); return PyModule_Create(&base85_module); } #else PyMODINIT_FUNC initbase85(void) { Py_InitModule3("base85", methods, base85_doc); b85prep(); } #endif