Mercurial > hg
annotate mercurial/diffhelpers.c @ 11148:a912f26777d3
merge: introduce tool.check parameter
tool.check is a list of check options, and can be used in place of
tool.checkchanged and tool.checkconflicts:
Equivalences:
tool.checkchanged = yes
tool.checkconflicts = no
tool.check = changed
tool.checkchanged = no
tool.checkconflicts = yes
tool.check = conflicts
tool.checkchanged = yes
tool.checkconflicts = yes
tool.check = changed, conflicts
Add _toollist() wrapper for ui.configlist() to implement this consistently.
checkchanged and checkconflicts are still supported, but check is
preferred for implementing new check options.
author | David Champion <dgc@uchicago.edu> |
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date | Mon, 10 May 2010 11:04:56 -0500 |
parents | 08a0f04b56bd |
children | f50103035c38 |
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1 /* |
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2 * diffhelpers.c - helper routines for mpatch |
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3 * |
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4 * Copyright 2007 Chris Mason <chris.mason@oracle.com> |
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5 * |
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6 * This software may be used and distributed according to the terms |
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7 * of the GNU General Public License v2, 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 #include <stdlib.h> |
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12 #include <string.h> |
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13 |
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14 static char diffhelpers_doc[] = "Efficient diff parsing"; |
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15 static PyObject *diffhelpers_Error; |
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16 |
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17 |
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18 /* fixup the last lines of a and b when the patch has no newline at eof */ |
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19 static void _fix_newline(PyObject *hunk, PyObject *a, PyObject *b) |
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20 { |
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21 int hunksz = PyList_Size(hunk); |
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22 PyObject *s = PyList_GET_ITEM(hunk, hunksz-1); |
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23 char *l = PyString_AS_STRING(s); |
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24 int alen = PyList_Size(a); |
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25 int blen = PyList_Size(b); |
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26 char c = l[0]; |
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27 PyObject *hline; |
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28 int sz = PyString_GET_SIZE(s); |
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29 |
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30 if (sz > 1 && l[sz-2] == '\r') |
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31 /* tolerate CRLF in last line */ |
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32 sz -= 1; |
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33 hline = PyString_FromStringAndSize(l, sz-1); |
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34 |
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35 if (c == ' ' || c == '+') { |
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36 PyObject *rline = PyString_FromStringAndSize(l + 1, sz - 2); |
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37 PyList_SetItem(b, blen-1, rline); |
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38 } |
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39 if (c == ' ' || c == '-') { |
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40 Py_INCREF(hline); |
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41 PyList_SetItem(a, alen-1, hline); |
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42 } |
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43 PyList_SetItem(hunk, hunksz-1, hline); |
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44 } |
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45 |
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46 /* python callable form of _fix_newline */ |
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47 static PyObject * |
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48 fix_newline(PyObject *self, PyObject *args) |
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49 { |
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50 PyObject *hunk, *a, *b; |
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51 if (!PyArg_ParseTuple(args, "OOO", &hunk, &a, &b)) |
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52 return NULL; |
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53 _fix_newline(hunk, a, b); |
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54 return Py_BuildValue("l", 0); |
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55 } |
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56 |
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57 /* |
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58 * read lines from fp into the hunk. The hunk is parsed into two arrays |
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59 * a and b. a gets the old state of the text, b gets the new state |
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60 * The control char from the hunk is saved when inserting into a, but not b |
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61 * (for performance while deleting files) |
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62 */ |
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63 static PyObject * |
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64 addlines(PyObject *self, PyObject *args) |
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65 { |
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66 |
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67 PyObject *fp, *hunk, *a, *b, *x; |
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68 int i; |
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69 int lena, lenb; |
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70 int num; |
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71 int todoa, todob; |
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72 char *s, c; |
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73 PyObject *l; |
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74 if (!PyArg_ParseTuple(args, "OOiiOO", &fp, &hunk, &lena, &lenb, &a, &b)) |
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75 return NULL; |
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76 |
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77 while (1) { |
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78 todoa = lena - PyList_Size(a); |
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79 todob = lenb - PyList_Size(b); |
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80 num = todoa > todob ? todoa : todob; |
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81 if (num == 0) |
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82 break; |
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83 for (i = 0; i < num; i++) { |
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84 x = PyFile_GetLine(fp, 0); |
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85 s = PyString_AS_STRING(x); |
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86 c = *s; |
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87 if (strcmp(s, "\\ No newline at end of file\n") == 0) { |
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88 _fix_newline(hunk, a, b); |
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89 continue; |
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90 } |
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91 if (c == '\n') { |
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92 /* Some patches may be missing the control char |
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93 * on empty lines. Supply a leading space. */ |
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94 Py_DECREF(x); |
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95 x = PyString_FromString(" \n"); |
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96 } |
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97 PyList_Append(hunk, x); |
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98 if (c == '+') { |
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99 l = PyString_FromString(s + 1); |
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100 PyList_Append(b, l); |
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101 Py_DECREF(l); |
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102 } else if (c == '-') { |
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103 PyList_Append(a, x); |
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104 } else { |
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105 l = PyString_FromString(s + 1); |
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106 PyList_Append(b, l); |
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107 Py_DECREF(l); |
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108 PyList_Append(a, x); |
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109 } |
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110 Py_DECREF(x); |
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111 } |
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112 } |
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113 return Py_BuildValue("l", 0); |
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114 } |
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115 |
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116 /* |
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117 * compare the lines in a with the lines in b. a is assumed to have |
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118 * a control char at the start of each line, this char is ignored in the |
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119 * compare |
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120 */ |
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121 static PyObject * |
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122 testhunk(PyObject *self, PyObject *args) |
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123 { |
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124 |
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125 PyObject *a, *b; |
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126 long bstart; |
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127 int alen, blen; |
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128 int i; |
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129 char *sa, *sb; |
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130 |
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131 if (!PyArg_ParseTuple(args, "OOl", &a, &b, &bstart)) |
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132 return NULL; |
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133 alen = PyList_Size(a); |
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134 blen = PyList_Size(b); |
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135 if (alen > blen - bstart) { |
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136 return Py_BuildValue("l", -1); |
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137 } |
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138 for (i = 0; i < alen; i++) { |
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139 sa = PyString_AS_STRING(PyList_GET_ITEM(a, i)); |
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140 sb = PyString_AS_STRING(PyList_GET_ITEM(b, i + bstart)); |
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141 if (strcmp(sa + 1, sb) != 0) |
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142 return Py_BuildValue("l", -1); |
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143 } |
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144 return Py_BuildValue("l", 0); |
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145 } |
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146 |
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147 static PyMethodDef methods[] = { |
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148 {"addlines", addlines, METH_VARARGS, "add lines to a hunk\n"}, |
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149 {"fix_newline", fix_newline, METH_VARARGS, "fixup newline counters\n"}, |
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150 {"testhunk", testhunk, METH_VARARGS, "test lines in a hunk\n"}, |
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151 {NULL, NULL} |
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152 }; |
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153 |
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154 PyMODINIT_FUNC |
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155 initdiffhelpers(void) |
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156 { |
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157 Py_InitModule3("diffhelpers", methods, diffhelpers_doc); |
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158 diffhelpers_Error = PyErr_NewException("diffhelpers.diffhelpersError", |
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159 NULL, NULL); |
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160 } |
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161 |