Mercurial > public > mercurial-scm > hg
annotate mercurial/cext/base85.c @ 36884:ece242db5000
hgweb: use templater on requestcontext instance
After this commit, all @webcommand function no longer use their
"tmpl" argument. Instead, they use the templater attached to the
requestcontext.
This is the same exact object. So there should be no difference in
behavior.
Differential Revision: https://phab.mercurial-scm.org/D2800
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Sat, 10 Mar 2018 20:38:28 -0800 |
| parents | 186c6df3a373 |
| children | 91477b123700 |
| rev | line source |
|---|---|
| 3283 | 1 /* |
| 2 base85 codec | |
| 3 | |
| 4 Copyright 2006 Brendan Cully <brendan@kublai.com> | |
| 5 | |
| 6 This software may be used and distributed according to the terms of | |
| 7 the GNU General Public License, incorporated herein by reference. | |
| 8 | |
| 9 Largely based on git's implementation | |
| 10 */ | |
| 11 | |
|
16837
1b9d54c00d50
base85: use Py_ssize_t for string lengths
Adrian Buehlmann <adrian@cadifra.com>
parents:
16522
diff
changeset
|
12 #define PY_SSIZE_T_CLEAN |
| 3283 | 13 #include <Python.h> |
| 14 | |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
15 #include "util.h" |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
16 |
|
36226
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
17 static const char b85chars[] = |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
18 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
19 "abcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~"; |
| 3283 | 20 static char b85dec[256]; |
| 21 | |
|
27060
4613a89bea42
base85: clean up function definition style
Augie Fackler <augie@google.com>
parents:
26074
diff
changeset
|
22 static void b85prep(void) |
| 3283 | 23 { |
|
26074
c1aefe57cf4e
base85: fix comparison of an int and a long
Augie Fackler <augie@google.com>
parents:
16848
diff
changeset
|
24 unsigned i; |
| 3283 | 25 |
| 26 memset(b85dec, 0, sizeof(b85dec)); | |
| 27 for (i = 0; i < sizeof(b85chars); i++) | |
| 28 b85dec[(int)(b85chars[i])] = i + 1; | |
| 29 } | |
| 30 | |
|
27060
4613a89bea42
base85: clean up function definition style
Augie Fackler <augie@google.com>
parents:
26074
diff
changeset
|
31 static PyObject *b85encode(PyObject *self, PyObject *args) |
| 3283 | 32 { |
| 33 const unsigned char *text; | |
| 34 PyObject *out; | |
| 35 char *dst; | |
|
16837
1b9d54c00d50
base85: use Py_ssize_t for string lengths
Adrian Buehlmann <adrian@cadifra.com>
parents:
16522
diff
changeset
|
36 Py_ssize_t len, olen, i; |
| 3283 | 37 unsigned int acc, val, ch; |
|
7190
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
38 int pad = 0; |
| 3283 | 39 |
|
36620
186c6df3a373
py3: bulk-replace 'const char*' format specifier passed to PyArg_ParseTuple*()
Yuya Nishihara <yuya@tcha.org>
parents:
36226
diff
changeset
|
40 if (!PyArg_ParseTuple(args, PY23("s#|i", "y#|i"), &text, &len, &pad)) |
| 3283 | 41 return NULL; |
| 42 | |
|
7190
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
43 if (pad) |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
44 olen = ((len + 3) / 4 * 5) - 3; |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
45 else { |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
46 olen = len % 4; |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
47 if (olen) |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
48 olen++; |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
49 olen += len / 4 * 5; |
|
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
50 } |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
51 if (!(out = PyBytes_FromStringAndSize(NULL, olen + 3))) |
| 3283 | 52 return NULL; |
| 53 | |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
54 dst = PyBytes_AsString(out); |
| 3283 | 55 |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
56 while (len) { |
| 3283 | 57 acc = 0; |
| 58 for (i = 24; i >= 0; i -= 8) { | |
| 59 ch = *text++; | |
| 60 acc |= ch << i; | |
| 61 if (--len == 0) | |
| 62 break; | |
| 63 } | |
| 64 for (i = 4; i >= 0; i--) { | |
| 65 val = acc % 85; | |
| 66 acc /= 85; | |
| 67 dst[i] = b85chars[val]; | |
| 68 } | |
| 69 dst += 5; | |
| 70 } | |
| 71 | |
|
7190
aecea6934fdd
Some additional space/tab cleanups
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3369
diff
changeset
|
72 if (!pad) |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
73 _PyBytes_Resize(&out, olen); |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
74 |
| 3283 | 75 return out; |
| 76 } | |
| 77 | |
|
27060
4613a89bea42
base85: clean up function definition style
Augie Fackler <augie@google.com>
parents:
26074
diff
changeset
|
78 static PyObject *b85decode(PyObject *self, PyObject *args) |
| 3283 | 79 { |
| 80 PyObject *out; | |
| 81 const char *text; | |
| 82 char *dst; | |
|
16837
1b9d54c00d50
base85: use Py_ssize_t for string lengths
Adrian Buehlmann <adrian@cadifra.com>
parents:
16522
diff
changeset
|
83 Py_ssize_t len, i, j, olen, cap; |
|
1b9d54c00d50
base85: use Py_ssize_t for string lengths
Adrian Buehlmann <adrian@cadifra.com>
parents:
16522
diff
changeset
|
84 int c; |
| 3283 | 85 unsigned int acc; |
| 86 | |
|
36620
186c6df3a373
py3: bulk-replace 'const char*' format specifier passed to PyArg_ParseTuple*()
Yuya Nishihara <yuya@tcha.org>
parents:
36226
diff
changeset
|
87 if (!PyArg_ParseTuple(args, PY23("s#", "y#"), &text, &len)) |
| 3283 | 88 return NULL; |
| 89 | |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
90 olen = len / 5 * 4; |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
91 i = len % 5; |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
92 if (i) |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
93 olen += i - 1; |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
94 if (!(out = PyBytes_FromStringAndSize(NULL, olen))) |
| 3283 | 95 return NULL; |
| 96 | |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
97 dst = PyBytes_AsString(out); |
| 3283 | 98 |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
99 i = 0; |
|
34437
ce26a13869fb
cext: move braces for control statements to same line
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32368
diff
changeset
|
100 while (i < len) { |
| 3283 | 101 acc = 0; |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
102 cap = len - i - 1; |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
103 if (cap > 4) |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
104 cap = 4; |
|
34437
ce26a13869fb
cext: move braces for control statements to same line
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32368
diff
changeset
|
105 for (j = 0; j < cap; i++, j++) { |
| 3283 | 106 c = b85dec[(int)*text++] - 1; |
| 107 if (c < 0) | |
|
10282
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
7190
diff
changeset
|
108 return PyErr_Format( |
|
36226
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
109 PyExc_ValueError, |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
110 "bad base85 character at position %d", |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
111 (int)i); |
| 3283 | 112 acc = acc * 85 + c; |
| 113 } | |
|
34437
ce26a13869fb
cext: move braces for control statements to same line
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32368
diff
changeset
|
114 if (i++ < len) { |
| 3283 | 115 c = b85dec[(int)*text++] - 1; |
| 116 if (c < 0) | |
|
10282
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
7190
diff
changeset
|
117 return PyErr_Format( |
|
36226
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
118 PyExc_ValueError, |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
119 "bad base85 character at position %d", |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
120 (int)i); |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
121 /* overflow detection: 0xffffffff == "|NsC0", |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
122 * "|NsC" == 0x03030303 */ |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
123 if (acc > 0x03030303 || (acc *= 85) > 0xffffffff - c) |
|
10282
08a0f04b56bd
many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents:
7190
diff
changeset
|
124 return PyErr_Format( |
|
36226
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
125 PyExc_ValueError, |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
126 "bad base85 sequence at position %d", |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
127 (int)i); |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
128 acc += c; |
| 3283 | 129 } |
| 130 | |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
131 cap = olen < 4 ? olen : 4; |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
132 olen -= cap; |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
133 for (j = 0; j < 4 - cap; j++) |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
134 acc *= 85; |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
135 if (cap && cap < 4) |
|
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
136 acc += 0xffffff >> (cap - 1) * 8; |
|
34437
ce26a13869fb
cext: move braces for control statements to same line
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32368
diff
changeset
|
137 for (j = 0; j < cap; j++) { |
| 3283 | 138 acc = (acc << 8) | (acc >> 24); |
|
3288
e93c926e069e
Handle odd-sized base85 input and output
Brendan Cully <brendan@kublai.com>
parents:
3283
diff
changeset
|
139 *dst++ = acc; |
| 3283 | 140 } |
| 141 } | |
| 142 | |
| 143 return out; | |
| 144 } | |
| 145 | |
| 146 static char base85_doc[] = "Base85 Data Encoding"; | |
| 147 | |
| 148 static PyMethodDef methods[] = { | |
|
36226
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
149 {"b85encode", b85encode, METH_VARARGS, |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
150 "Encode text in base85.\n\n" |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
151 "If the second parameter is true, pad the result to a multiple of " |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
152 "five characters.\n"}, |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
153 {"b85decode", b85decode, METH_VARARGS, "Decode base85 text.\n"}, |
|
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
154 {NULL, NULL}, |
| 3283 | 155 }; |
| 156 | |
|
32356
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
157 static const int version = 1; |
|
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
158 |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
159 #ifdef IS_PY3K |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
160 static struct PyModuleDef base85_module = { |
|
36226
e1138fc2c4e2
base85: allow clang-format oversight
Augie Fackler <augie@google.com>
parents:
34437
diff
changeset
|
161 PyModuleDef_HEAD_INIT, "base85", base85_doc, -1, methods, |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
162 }; |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
163 |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
164 PyMODINIT_FUNC PyInit_base85(void) |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
165 { |
|
32356
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
166 PyObject *m; |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
167 b85prep(); |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
168 |
|
32356
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
169 m = PyModule_Create(&base85_module); |
|
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
170 PyModule_AddIntConstant(m, "version", version); |
|
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
171 return m; |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
172 } |
|
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
173 #else |
| 3283 | 174 PyMODINIT_FUNC initbase85(void) |
| 175 { | |
|
32356
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
176 PyObject *m; |
|
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
177 m = Py_InitModule3("base85", methods, base85_doc); |
| 3283 | 178 |
| 179 b85prep(); | |
|
32356
7948adb53e28
base85: add version to help detect breaking binary changes
Jun Wu <quark@fb.com>
parents:
27060
diff
changeset
|
180 PyModule_AddIntConstant(m, "version", version); |
| 3283 | 181 } |
|
11362
f42ef9493fa9
base85.c: Added support for py3k.
Renato Cunha <renatoc@gmail.com>
parents:
10282
diff
changeset
|
182 #endif |