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annotate mercurial/cext/charencode.c @ 33758:0f4ac3b6dee4

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cext: factor out header for charencode.c This merges a part of util.h with the header which should exist for charencode.c.
author Yuya Nishihara <yuya@tcha.org>
date Sun, 21 May 2017 14:23:22 +0900
parents e9996bd7203f
children a22339d389d4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 charencode.c - miscellaneous character encoding
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3
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4 Copyright 2008 Matt Mackall <mpm@selenic.com> and others
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5
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6 This software may be used and distributed according to the terms of
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7 the GNU General Public License, incorporated herein by reference.
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8 */
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9
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10 #include <Python.h>
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11
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12 #include "charencode.h"
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13 #include "util.h"
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14
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15 static const char lowertable[128] = {
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16 '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
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17 '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
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18 '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
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19 '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f',
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20 '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
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21 '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f',
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22 '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37',
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23 '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f',
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24 '\x40',
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25 '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67', /* A-G */
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26 '\x68', '\x69', '\x6a', '\x6b', '\x6c', '\x6d', '\x6e', '\x6f', /* H-O */
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27 '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77', /* P-W */
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28 '\x78', '\x79', '\x7a', /* X-Z */
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29 '\x5b', '\x5c', '\x5d', '\x5e', '\x5f',
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30 '\x60', '\x61', '\x62', '\x63', '\x64', '\x65', '\x66', '\x67',
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31 '\x68', '\x69', '\x6a', '\x6b', '\x6c', '\x6d', '\x6e', '\x6f',
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32 '\x70', '\x71', '\x72', '\x73', '\x74', '\x75', '\x76', '\x77',
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33 '\x78', '\x79', '\x7a', '\x7b', '\x7c', '\x7d', '\x7e', '\x7f'
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34 };
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35
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36 static const char uppertable[128] = {
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37 '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
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38 '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f',
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39 '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17',
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40 '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f',
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41 '\x20', '\x21', '\x22', '\x23', '\x24', '\x25', '\x26', '\x27',
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42 '\x28', '\x29', '\x2a', '\x2b', '\x2c', '\x2d', '\x2e', '\x2f',
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43 '\x30', '\x31', '\x32', '\x33', '\x34', '\x35', '\x36', '\x37',
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44 '\x38', '\x39', '\x3a', '\x3b', '\x3c', '\x3d', '\x3e', '\x3f',
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45 '\x40', '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47',
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46 '\x48', '\x49', '\x4a', '\x4b', '\x4c', '\x4d', '\x4e', '\x4f',
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47 '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57',
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48 '\x58', '\x59', '\x5a', '\x5b', '\x5c', '\x5d', '\x5e', '\x5f',
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49 '\x60',
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50 '\x41', '\x42', '\x43', '\x44', '\x45', '\x46', '\x47', /* a-g */
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51 '\x48', '\x49', '\x4a', '\x4b', '\x4c', '\x4d', '\x4e', '\x4f', /* h-o */
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52 '\x50', '\x51', '\x52', '\x53', '\x54', '\x55', '\x56', '\x57', /* p-w */
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53 '\x58', '\x59', '\x5a', /* x-z */
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54 '\x7b', '\x7c', '\x7d', '\x7e', '\x7f'
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55 };
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56
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57 /*
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58 * Turn a hex-encoded string into binary.
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59 */
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60 PyObject *unhexlify(const char *str, int len)
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61 {
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62 PyObject *ret;
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63 char *d;
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64 int i;
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65
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66 ret = PyBytes_FromStringAndSize(NULL, len / 2);
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67
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68 if (!ret)
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69 return NULL;
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70
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71 d = PyBytes_AsString(ret);
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72
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73 for (i = 0; i < len;) {
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74 int hi = hexdigit(str, i++);
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75 int lo = hexdigit(str, i++);
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76 *d++ = (hi << 4) | lo;
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77 }
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78
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79 return ret;
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80 }
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81
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82 static inline PyObject *_asciitransform(PyObject *str_obj,
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83 const char table[128],
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84 PyObject *fallback_fn)
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85 {
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86 char *str, *newstr;
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87 Py_ssize_t i, len;
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88 PyObject *newobj = NULL;
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89 PyObject *ret = NULL;
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90
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91 str = PyBytes_AS_STRING(str_obj);
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92 len = PyBytes_GET_SIZE(str_obj);
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93
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94 newobj = PyBytes_FromStringAndSize(NULL, len);
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95 if (!newobj)
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96 goto quit;
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97
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98 newstr = PyBytes_AS_STRING(newobj);
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99
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100 for (i = 0; i < len; i++) {
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101 char c = str[i];
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102 if (c & 0x80) {
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103 if (fallback_fn != NULL) {
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104 ret = PyObject_CallFunctionObjArgs(fallback_fn,
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105 str_obj, NULL);
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106 } else {
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107 PyObject *err = PyUnicodeDecodeError_Create(
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108 "ascii", str, len, i, (i + 1),
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109 "unexpected code byte");
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110 PyErr_SetObject(PyExc_UnicodeDecodeError, err);
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111 Py_XDECREF(err);
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112 }
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113 goto quit;
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114 }
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115 newstr[i] = table[(unsigned char)c];
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116 }
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117
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118 ret = newobj;
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119 Py_INCREF(ret);
22778
80f2b63dd83a parsers: add a function to efficiently lowercase ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents: 22604
diff changeset
120 quit:
80f2b63dd83a parsers: add a function to efficiently lowercase ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents: 22604
diff changeset
121 Py_XDECREF(newobj);
24575
a62e957413f7 parsers._asciilower: use an explicit return object
Siddharth Agarwal <sid0@fb.com>
parents: 24574
diff changeset
122 return ret;
22778
80f2b63dd83a parsers: add a function to efficiently lowercase ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents: 22604
diff changeset
123 }
80f2b63dd83a parsers: add a function to efficiently lowercase ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents: 22604
diff changeset
124
33757
e9996bd7203f cext: split character encoding functions to new compilation unit
Yuya Nishihara <yuya@tcha.org>
parents: 33756
diff changeset
125 PyObject *asciilower(PyObject *self, PyObject *args)
24574
e97a00bf18ae parsers: factor out most of asciilower into an internal function
Siddharth Agarwal <sid0@fb.com>
parents: 24499
diff changeset
126 {
e97a00bf18ae parsers: factor out most of asciilower into an internal function
Siddharth Agarwal <sid0@fb.com>
parents: 24499
diff changeset
127 PyObject *str_obj;
e97a00bf18ae parsers: factor out most of asciilower into an internal function
Siddharth Agarwal <sid0@fb.com>
parents: 24499
diff changeset
128 if (!PyArg_ParseTuple(args, "O!:asciilower", &PyBytes_Type, &str_obj))
e97a00bf18ae parsers: factor out most of asciilower into an internal function
Siddharth Agarwal <sid0@fb.com>
parents: 24499
diff changeset
129 return NULL;
24606
e4a733c34bc6 parsers._asciitransform: also accept a fallback function
Siddharth Agarwal <sid0@fb.com>
parents: 24577
diff changeset
130 return _asciitransform(str_obj, lowertable, NULL);
24574
e97a00bf18ae parsers: factor out most of asciilower into an internal function
Siddharth Agarwal <sid0@fb.com>
parents: 24499
diff changeset
131 }
e97a00bf18ae parsers: factor out most of asciilower into an internal function
Siddharth Agarwal <sid0@fb.com>
parents: 24499
diff changeset
132
33757
e9996bd7203f cext: split character encoding functions to new compilation unit
Yuya Nishihara <yuya@tcha.org>
parents: 33756
diff changeset
133 PyObject *asciiupper(PyObject *self, PyObject *args)
24577
bf55df007535 parsers: introduce an asciiupper function
Siddharth Agarwal <sid0@fb.com>
parents: 24576
diff changeset
134 {
bf55df007535 parsers: introduce an asciiupper function
Siddharth Agarwal <sid0@fb.com>
parents: 24576
diff changeset
135 PyObject *str_obj;
bf55df007535 parsers: introduce an asciiupper function
Siddharth Agarwal <sid0@fb.com>
parents: 24576
diff changeset
136 if (!PyArg_ParseTuple(args, "O!:asciiupper", &PyBytes_Type, &str_obj))
bf55df007535 parsers: introduce an asciiupper function
Siddharth Agarwal <sid0@fb.com>
parents: 24576
diff changeset
137 return NULL;
24606
e4a733c34bc6 parsers._asciitransform: also accept a fallback function
Siddharth Agarwal <sid0@fb.com>
parents: 24577
diff changeset
138 return _asciitransform(str_obj, uppertable, NULL);
24577
bf55df007535 parsers: introduce an asciiupper function
Siddharth Agarwal <sid0@fb.com>
parents: 24576
diff changeset
139 }
bf55df007535 parsers: introduce an asciiupper function
Siddharth Agarwal <sid0@fb.com>
parents: 24576
diff changeset
140
33757
e9996bd7203f cext: split character encoding functions to new compilation unit
Yuya Nishihara <yuya@tcha.org>
parents: 33756
diff changeset
141 PyObject *make_file_foldmap(PyObject *self, PyObject *args)
24609
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
142 {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
143 PyObject *dmap, *spec_obj, *normcase_fallback;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
144 PyObject *file_foldmap = NULL;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
145 enum normcase_spec spec;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
146 PyObject *k, *v;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
147 dirstateTupleObject *tuple;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
148 Py_ssize_t pos = 0;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
149 const char *table;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
150
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
151 if (!PyArg_ParseTuple(args, "O!O!O!:make_file_foldmap",
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
152 &PyDict_Type, &dmap,
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
153 &PyInt_Type, &spec_obj,
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
154 &PyFunction_Type, &normcase_fallback))
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
155 goto quit;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
156
24622
1e05f11619bb parsers.c: avoid implicit conversion loses integer precision warning
Andr? Sintzoff <andre.sintzoff@gmail.com>
parents: 24609
diff changeset
157 spec = (int)PyInt_AS_LONG(spec_obj);
24609
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
158 switch (spec) {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
159 case NORMCASE_LOWER:
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
160 table = lowertable;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
161 break;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
162 case NORMCASE_UPPER:
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
163 table = uppertable;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
164 break;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
165 case NORMCASE_OTHER:
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
166 table = NULL;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
167 break;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
168 default:
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
169 PyErr_SetString(PyExc_TypeError, "invalid normcasespec");
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
170 goto quit;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
171 }
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
172
25583
ce64c9ab19f2 parsers: factor out code to create a presized dict
Siddharth Agarwal <sid0@fb.com>
parents: 25582
diff changeset
173 /* Add some more entries to deal with additions outside this
ce64c9ab19f2 parsers: factor out code to create a presized dict
Siddharth Agarwal <sid0@fb.com>
parents: 25582
diff changeset
174 function. */
ce64c9ab19f2 parsers: factor out code to create a presized dict
Siddharth Agarwal <sid0@fb.com>
parents: 25582
diff changeset
175 file_foldmap = _dict_new_presized((PyDict_Size(dmap) / 10) * 11);
24609
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
176 if (file_foldmap == NULL)
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
177 goto quit;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
178
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
179 while (PyDict_Next(dmap, &pos, &k, &v)) {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
180 if (!dirstate_tuple_check(v)) {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
181 PyErr_SetString(PyExc_TypeError,
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
182 "expected a dirstate tuple");
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
183 goto quit;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
184 }
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
185
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
186 tuple = (dirstateTupleObject *)v;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
187 if (tuple->state != 'r') {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
188 PyObject *normed;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
189 if (table != NULL) {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
190 normed = _asciitransform(k, table,
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
191 normcase_fallback);
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
192 } else {
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
193 normed = PyObject_CallFunctionObjArgs(
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
194 normcase_fallback, k, NULL);
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
195 }
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
196
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
197 if (normed == NULL)
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
198 goto quit;
26049
b1634b7804c7 parsers: correctly decref normed value after PyDict_SetItem
Augie Fackler <augie@google.com>
parents: 26048
diff changeset
199 if (PyDict_SetItem(file_foldmap, normed, k) == -1) {
b1634b7804c7 parsers: correctly decref normed value after PyDict_SetItem
Augie Fackler <augie@google.com>
parents: 26048
diff changeset
200 Py_DECREF(normed);
24609
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
201 goto quit;
26049
b1634b7804c7 parsers: correctly decref normed value after PyDict_SetItem
Augie Fackler <augie@google.com>
parents: 26048
diff changeset
202 }
b1634b7804c7 parsers: correctly decref normed value after PyDict_SetItem
Augie Fackler <augie@google.com>
parents: 26048
diff changeset
203 Py_DECREF(normed);
24609
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
204 }
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
205 }
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
206 return file_foldmap;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
207 quit:
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
208 Py_XDECREF(file_foldmap);
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
209 return NULL;
670aaee7931c parsers: add a C function to create a file foldmap
Siddharth Agarwal <sid0@fb.com>
parents: 24606
diff changeset
210 }