Mercurial > hg
view mercurial/cext/charencode.h @ 33925:2c37f9dabc32
encoding: add fast path of jsonescape() (issue5533)
This isn't highly optimized as it copies characters one by one, but seems
reasonably simple and not slow.
(with mercurial repo)
$ export HGRCPATH=/dev/null HGPLAIN=
$ hg log --time --config experimental.stabilization=all -Tjson > /dev/null
(original)
time: real 6.830 secs (user 6.740+0.000 sys 0.080+0.000)
time: real 6.690 secs (user 6.650+0.000 sys 0.040+0.000)
time: real 6.700 secs (user 6.640+0.000 sys 0.060+0.000)
(this patch)
time: real 5.630 secs (user 5.550+0.000 sys 0.070+0.000)
time: real 5.700 secs (user 5.650+0.000 sys 0.050+0.000)
time: real 5.690 secs (user 5.640+0.000 sys 0.050+0.000)
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sun, 23 Apr 2017 14:47:52 +0900 |
parents | a22339d389d4 |
children | f4433f2713d0 |
line wrap: on
line source
/* charencode.h - miscellaneous character encoding This software may be used and distributed according to the terms of the GNU General Public License, incorporated herein by reference. */ #ifndef _HG_CHARENCODE_H_ #define _HG_CHARENCODE_H_ #include <Python.h> #include "compat.h" /* This should be kept in sync with normcasespecs in encoding.py. */ enum normcase_spec { NORMCASE_LOWER = -1, NORMCASE_UPPER = 1, NORMCASE_OTHER = 0 }; PyObject *unhexlify(const char *str, Py_ssize_t len); PyObject *asciilower(PyObject *self, PyObject *args); PyObject *asciiupper(PyObject *self, PyObject *args); PyObject *make_file_foldmap(PyObject *self, PyObject *args); PyObject *jsonescapeu8fast(PyObject *self, PyObject *args); static const int8_t hextable[256] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0-9 */ -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; static inline int hexdigit(const char *p, Py_ssize_t off) { int8_t val = hextable[(unsigned char)p[off]]; if (val >= 0) { return val; } PyErr_SetString(PyExc_ValueError, "input contains non-hex character"); return 0; } #endif /* _HG_CHARENCODE_H_ */