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@@ -1,1197 +1,1205 b'' | |||
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1 | 1 | /* |
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2 | 2 | parsers.c - efficient content parsing |
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3 | 3 | |
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4 | 4 | Copyright 2008 Matt Mackall <mpm@selenic.com> and others |
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5 | 5 | |
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6 | 6 | This software may be used and distributed according to the terms of |
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7 | 7 | the GNU General Public License, incorporated herein by reference. |
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8 | 8 | */ |
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9 | 9 | |
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10 | 10 | #include <Python.h> |
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11 | 11 | #include <ctype.h> |
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12 | 12 | #include <string.h> |
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13 | 13 | |
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14 | 14 | #include "util.h" |
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15 | 15 | |
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16 | 16 | static int hexdigit(char c) |
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17 | 17 | { |
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18 | 18 | if (c >= '0' && c <= '9') |
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19 | 19 | return c - '0'; |
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20 | 20 | if (c >= 'a' && c <= 'f') |
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21 | 21 | return c - 'a' + 10; |
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22 | 22 | if (c >= 'A' && c <= 'F') |
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23 | 23 | return c - 'A' + 10; |
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24 | 24 | |
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25 | 25 | PyErr_SetString(PyExc_ValueError, "input contains non-hex character"); |
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26 | 26 | return 0; |
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27 | 27 | } |
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28 | 28 | |
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29 | 29 | /* |
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30 | 30 | * Turn a hex-encoded string into binary. |
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31 | 31 | */ |
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32 | 32 | static PyObject *unhexlify(const char *str, int len) |
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33 | 33 | { |
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34 | 34 | PyObject *ret; |
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35 | 35 | const char *c; |
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36 | 36 | char *d; |
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37 | 37 | |
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38 | 38 | ret = PyBytes_FromStringAndSize(NULL, len / 2); |
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39 | 39 | |
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40 | 40 | if (!ret) |
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41 | 41 | return NULL; |
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42 | 42 | |
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43 | 43 | d = PyBytes_AsString(ret); |
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44 | 44 | |
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45 | 45 | for (c = str; c < str + len;) { |
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46 | 46 | int hi = hexdigit(*c++); |
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47 | 47 | int lo = hexdigit(*c++); |
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48 | 48 | *d++ = (hi << 4) | lo; |
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49 | 49 | } |
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50 | 50 | |
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51 | 51 | return ret; |
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52 | 52 | } |
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53 | 53 | |
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54 | 54 | /* |
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55 | 55 | * This code assumes that a manifest is stitched together with newline |
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56 | 56 | * ('\n') characters. |
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57 | 57 | */ |
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58 | 58 | static PyObject *parse_manifest(PyObject *self, PyObject *args) |
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59 | 59 | { |
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60 | 60 | PyObject *mfdict, *fdict; |
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61 | 61 | char *str, *cur, *start, *zero; |
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62 | 62 | int len; |
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63 | 63 | |
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64 | 64 | if (!PyArg_ParseTuple(args, "O!O!s#:parse_manifest", |
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65 | 65 | &PyDict_Type, &mfdict, |
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66 | 66 | &PyDict_Type, &fdict, |
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67 | 67 | &str, &len)) |
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68 | 68 | goto quit; |
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69 | 69 | |
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70 | 70 | for (start = cur = str, zero = NULL; cur < str + len; cur++) { |
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71 | 71 | PyObject *file = NULL, *node = NULL; |
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72 | 72 | PyObject *flags = NULL; |
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73 | 73 | int nlen; |
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74 | 74 | |
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75 | 75 | if (!*cur) { |
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76 | 76 | zero = cur; |
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77 | 77 | continue; |
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78 | 78 | } |
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79 | 79 | else if (*cur != '\n') |
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80 | 80 | continue; |
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81 | 81 | |
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82 | 82 | if (!zero) { |
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83 | 83 | PyErr_SetString(PyExc_ValueError, |
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84 | 84 | "manifest entry has no separator"); |
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85 | 85 | goto quit; |
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86 | 86 | } |
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87 | 87 | |
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88 | 88 | file = PyBytes_FromStringAndSize(start, zero - start); |
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89 | 89 | |
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90 | 90 | if (!file) |
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91 | 91 | goto bail; |
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92 | 92 | |
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93 | 93 | nlen = cur - zero - 1; |
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94 | 94 | |
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95 | 95 | node = unhexlify(zero + 1, nlen > 40 ? 40 : nlen); |
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96 | 96 | if (!node) |
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97 | 97 | goto bail; |
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98 | 98 | |
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99 | 99 | if (nlen > 40) { |
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100 | 100 | flags = PyBytes_FromStringAndSize(zero + 41, |
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101 | 101 | nlen - 40); |
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102 | 102 | if (!flags) |
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103 | 103 | goto bail; |
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104 | 104 | |
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105 | 105 | if (PyDict_SetItem(fdict, file, flags) == -1) |
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106 | 106 | goto bail; |
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107 | 107 | } |
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108 | 108 | |
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109 | 109 | if (PyDict_SetItem(mfdict, file, node) == -1) |
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110 | 110 | goto bail; |
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111 | 111 | |
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112 | 112 | start = cur + 1; |
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113 | 113 | zero = NULL; |
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114 | 114 | |
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115 | 115 | Py_XDECREF(flags); |
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116 | 116 | Py_XDECREF(node); |
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117 | 117 | Py_XDECREF(file); |
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118 | 118 | continue; |
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119 | 119 | bail: |
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120 | 120 | Py_XDECREF(flags); |
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121 | 121 | Py_XDECREF(node); |
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122 | 122 | Py_XDECREF(file); |
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123 | 123 | goto quit; |
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124 | 124 | } |
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125 | 125 | |
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126 | 126 | if (len > 0 && *(cur - 1) != '\n') { |
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127 | 127 | PyErr_SetString(PyExc_ValueError, |
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128 | 128 | "manifest contains trailing garbage"); |
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129 | 129 | goto quit; |
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130 | 130 | } |
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131 | 131 | |
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132 | 132 | Py_INCREF(Py_None); |
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133 | 133 | return Py_None; |
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134 | 134 | quit: |
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135 | 135 | return NULL; |
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136 | 136 | } |
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137 | 137 | |
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138 | 138 | static PyObject *parse_dirstate(PyObject *self, PyObject *args) |
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139 | 139 | { |
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140 | 140 | PyObject *dmap, *cmap, *parents = NULL, *ret = NULL; |
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141 | 141 | PyObject *fname = NULL, *cname = NULL, *entry = NULL; |
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142 | 142 | char *str, *cur, *end, *cpos; |
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143 | 143 | int state, mode, size, mtime; |
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144 | 144 | unsigned int flen; |
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145 | 145 | int len; |
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146 | 146 | |
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147 | 147 | if (!PyArg_ParseTuple(args, "O!O!s#:parse_dirstate", |
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148 | 148 | &PyDict_Type, &dmap, |
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149 | 149 | &PyDict_Type, &cmap, |
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150 | 150 | &str, &len)) |
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151 | 151 | goto quit; |
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152 | 152 | |
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153 | 153 | /* read parents */ |
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154 | 154 | if (len < 40) |
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155 | 155 | goto quit; |
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156 | 156 | |
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157 | 157 | parents = Py_BuildValue("s#s#", str, 20, str + 20, 20); |
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158 | 158 | if (!parents) |
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159 | 159 | goto quit; |
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160 | 160 | |
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161 | 161 | /* read filenames */ |
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162 | 162 | cur = str + 40; |
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163 | 163 | end = str + len; |
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164 | 164 | |
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165 | 165 | while (cur < end - 17) { |
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166 | 166 | /* unpack header */ |
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167 | 167 | state = *cur; |
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168 | 168 | mode = getbe32(cur + 1); |
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169 | 169 | size = getbe32(cur + 5); |
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170 | 170 | mtime = getbe32(cur + 9); |
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171 | 171 | flen = getbe32(cur + 13); |
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172 | 172 | cur += 17; |
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173 | 173 | if (cur + flen > end || cur + flen < cur) { |
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174 | 174 | PyErr_SetString(PyExc_ValueError, "overflow in dirstate"); |
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175 | 175 | goto quit; |
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176 | 176 | } |
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177 | 177 | |
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178 | 178 | entry = Py_BuildValue("ciii", state, mode, size, mtime); |
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179 | 179 | if (!entry) |
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180 | 180 | goto quit; |
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181 | 181 | PyObject_GC_UnTrack(entry); /* don't waste time with this */ |
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182 | 182 | |
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183 | 183 | cpos = memchr(cur, 0, flen); |
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184 | 184 | if (cpos) { |
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185 | 185 | fname = PyBytes_FromStringAndSize(cur, cpos - cur); |
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186 | 186 | cname = PyBytes_FromStringAndSize(cpos + 1, |
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187 | 187 | flen - (cpos - cur) - 1); |
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188 | 188 | if (!fname || !cname || |
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189 | 189 | PyDict_SetItem(cmap, fname, cname) == -1 || |
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190 | 190 | PyDict_SetItem(dmap, fname, entry) == -1) |
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191 | 191 | goto quit; |
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192 | 192 | Py_DECREF(cname); |
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193 | 193 | } else { |
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194 | 194 | fname = PyBytes_FromStringAndSize(cur, flen); |
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195 | 195 | if (!fname || |
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196 | 196 | PyDict_SetItem(dmap, fname, entry) == -1) |
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197 | 197 | goto quit; |
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198 | 198 | } |
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199 | 199 | cur += flen; |
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200 | 200 | Py_DECREF(fname); |
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201 | 201 | Py_DECREF(entry); |
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202 | 202 | fname = cname = entry = NULL; |
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203 | 203 | } |
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204 | 204 | |
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205 | 205 | ret = parents; |
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206 | 206 | Py_INCREF(ret); |
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207 | 207 | quit: |
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208 | 208 | Py_XDECREF(fname); |
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209 | 209 | Py_XDECREF(cname); |
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210 | 210 | Py_XDECREF(entry); |
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211 | 211 | Py_XDECREF(parents); |
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212 | 212 | return ret; |
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213 | 213 | } |
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214 | 214 | |
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215 | 215 | /* |
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216 | 216 | * A base-16 trie for fast node->rev mapping. |
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217 | 217 | * |
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218 | 218 | * Positive value is index of the next node in the trie |
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219 | 219 | * Negative value is a leaf: -(rev + 1) |
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220 | 220 | * Zero is empty |
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221 | 221 | */ |
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222 | 222 | typedef struct { |
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223 | 223 | int children[16]; |
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224 | 224 | } nodetree; |
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225 | 225 | |
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226 | 226 | /* |
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227 | 227 | * This class has two behaviours. |
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228 | 228 | * |
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229 | 229 | * When used in a list-like way (with integer keys), we decode an |
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230 | 230 | * entry in a RevlogNG index file on demand. Our last entry is a |
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231 | 231 | * sentinel, always a nullid. We have limited support for |
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232 | 232 | * integer-keyed insert and delete, only at elements right before the |
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233 | 233 | * sentinel. |
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234 | 234 | * |
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235 | 235 | * With string keys, we lazily perform a reverse mapping from node to |
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236 | 236 | * rev, using a base-16 trie. |
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237 | 237 | */ |
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238 | 238 | typedef struct { |
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239 | 239 | PyObject_HEAD |
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240 | 240 | /* Type-specific fields go here. */ |
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241 | 241 | PyObject *data; /* raw bytes of index */ |
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242 | 242 | PyObject **cache; /* cached tuples */ |
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243 | 243 | const char **offsets; /* populated on demand */ |
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244 | 244 | Py_ssize_t raw_length; /* original number of elements */ |
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245 | 245 | Py_ssize_t length; /* current number of elements */ |
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246 | 246 | PyObject *added; /* populated on demand */ |
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247 | 247 | nodetree *nt; /* base-16 trie */ |
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248 | 248 | int ntlength; /* # nodes in use */ |
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249 | 249 | int ntcapacity; /* # nodes allocated */ |
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250 | 250 | int ntdepth; /* maximum depth of tree */ |
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251 | 251 | int ntsplits; /* # splits performed */ |
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252 | 252 | int ntrev; /* last rev scanned */ |
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253 | 253 | int ntlookups; /* # lookups */ |
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254 | 254 | int ntmisses; /* # lookups that miss the cache */ |
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255 | 255 | int inlined; |
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256 | 256 | } indexObject; |
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257 | 257 | |
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258 | 258 | static Py_ssize_t index_length(const indexObject *self) |
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259 | 259 | { |
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260 | 260 | if (self->added == NULL) |
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261 | 261 | return self->length; |
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262 | 262 | return self->length + PyList_GET_SIZE(self->added); |
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263 | 263 | } |
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264 | 264 | |
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265 | 265 | static PyObject *nullentry; |
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266 | 266 | static const char nullid[20]; |
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267 | 267 | |
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268 | 268 | static long inline_scan(indexObject *self, const char **offsets); |
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269 | 269 | |
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270 | 270 | #if LONG_MAX == 0x7fffffffL |
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271 | 271 | static char *tuple_format = "Kiiiiiis#"; |
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272 | 272 | #else |
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273 | 273 | static char *tuple_format = "kiiiiiis#"; |
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274 | 274 | #endif |
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275 | 275 | |
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276 | 276 | /* |
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277 | 277 | * Return a pointer to the beginning of a RevlogNG record. |
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278 | 278 | */ |
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279 | 279 | static const char *index_deref(indexObject *self, Py_ssize_t pos) |
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280 | 280 | { |
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281 | 281 | if (self->inlined && pos > 0) { |
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282 | 282 | if (self->offsets == NULL) { |
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283 | 283 | self->offsets = malloc(self->raw_length * |
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284 | 284 | sizeof(*self->offsets)); |
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285 | 285 | if (self->offsets == NULL) |
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286 | 286 | return (const char *)PyErr_NoMemory(); |
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287 | 287 | inline_scan(self, self->offsets); |
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288 | 288 | } |
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289 | 289 | return self->offsets[pos]; |
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290 | 290 | } |
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291 | 291 | |
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292 | 292 | return PyString_AS_STRING(self->data) + pos * 64; |
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293 | 293 | } |
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294 | 294 | |
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295 | 295 | /* |
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296 | 296 | * RevlogNG format (all in big endian, data may be inlined): |
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297 | 297 | * 6 bytes: offset |
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298 | 298 | * 2 bytes: flags |
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299 | 299 | * 4 bytes: compressed length |
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300 | 300 | * 4 bytes: uncompressed length |
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301 | 301 | * 4 bytes: base revision |
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302 | 302 | * 4 bytes: link revision |
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303 | 303 | * 4 bytes: parent 1 revision |
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304 | 304 | * 4 bytes: parent 2 revision |
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305 | 305 | * 32 bytes: nodeid (only 20 bytes used) |
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306 | 306 | */ |
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307 | 307 | static PyObject *index_get(indexObject *self, Py_ssize_t pos) |
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308 | 308 | { |
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309 | 309 | uint64_t offset_flags; |
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310 | 310 | int comp_len, uncomp_len, base_rev, link_rev, parent_1, parent_2; |
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311 | 311 | const char *c_node_id; |
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312 | 312 | const char *data; |
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313 | 313 | Py_ssize_t length = index_length(self); |
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314 | 314 | PyObject *entry; |
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315 | 315 | |
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316 | 316 | if (pos < 0) |
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317 | 317 | pos += length; |
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318 | 318 | |
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319 | 319 | if (pos < 0 || pos >= length) { |
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320 | 320 | PyErr_SetString(PyExc_IndexError, "revlog index out of range"); |
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321 | 321 | return NULL; |
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322 | 322 | } |
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323 | 323 | |
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324 | 324 | if (pos == length - 1) { |
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325 | 325 | Py_INCREF(nullentry); |
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326 | 326 | return nullentry; |
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327 | 327 | } |
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328 | 328 | |
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329 | 329 | if (pos >= self->length - 1) { |
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330 | 330 | PyObject *obj; |
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331 | 331 | obj = PyList_GET_ITEM(self->added, pos - self->length + 1); |
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332 | 332 | Py_INCREF(obj); |
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333 | 333 | return obj; |
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334 | 334 | } |
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335 | 335 | |
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336 | 336 | if (self->cache) { |
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337 | 337 | if (self->cache[pos]) { |
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338 | 338 | Py_INCREF(self->cache[pos]); |
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339 | 339 | return self->cache[pos]; |
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340 | 340 | } |
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341 | 341 | } else { |
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342 | 342 | self->cache = calloc(self->raw_length, sizeof(PyObject *)); |
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343 | 343 | if (self->cache == NULL) |
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344 | 344 | return PyErr_NoMemory(); |
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345 | 345 | } |
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346 | 346 | |
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347 | 347 | data = index_deref(self, pos); |
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348 | 348 | if (data == NULL) |
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349 | 349 | return NULL; |
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350 | 350 | |
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351 | 351 | offset_flags = getbe32(data + 4); |
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352 | 352 | if (pos == 0) /* mask out version number for the first entry */ |
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353 | 353 | offset_flags &= 0xFFFF; |
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354 | 354 | else { |
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355 | 355 | uint32_t offset_high = getbe32(data); |
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356 | 356 | offset_flags |= ((uint64_t)offset_high) << 32; |
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357 | 357 | } |
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358 | 358 | |
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359 | 359 | comp_len = getbe32(data + 8); |
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360 | 360 | uncomp_len = getbe32(data + 12); |
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361 | 361 | base_rev = getbe32(data + 16); |
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362 | 362 | link_rev = getbe32(data + 20); |
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363 | 363 | parent_1 = getbe32(data + 24); |
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364 | 364 | parent_2 = getbe32(data + 28); |
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365 | 365 | c_node_id = data + 32; |
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366 | 366 | |
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367 | 367 | entry = Py_BuildValue(tuple_format, offset_flags, comp_len, |
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368 | 368 | uncomp_len, base_rev, link_rev, |
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369 | 369 | parent_1, parent_2, c_node_id, 20); |
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370 | 370 | |
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371 | 371 | if (entry) |
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372 | 372 | PyObject_GC_UnTrack(entry); |
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373 | 373 | |
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374 | 374 | self->cache[pos] = entry; |
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375 | 375 | Py_INCREF(entry); |
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376 | 376 | |
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377 | 377 | return entry; |
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378 | 378 | } |
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379 | 379 | |
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380 | 380 | /* |
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381 | 381 | * Return the 20-byte SHA of the node corresponding to the given rev. |
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382 | 382 | */ |
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383 | 383 | static const char *index_node(indexObject *self, Py_ssize_t pos) |
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384 | 384 | { |
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385 | 385 | Py_ssize_t length = index_length(self); |
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386 | 386 | const char *data; |
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387 | 387 | |
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388 | 388 | if (pos == length - 1) |
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389 | 389 | return nullid; |
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390 | 390 | |
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391 | 391 | if (pos >= length) |
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392 | 392 | return NULL; |
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393 | 393 | |
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394 | 394 | if (pos >= self->length - 1) { |
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395 | 395 | PyObject *tuple, *str; |
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396 | 396 | tuple = PyList_GET_ITEM(self->added, pos - self->length + 1); |
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397 | 397 | str = PyTuple_GetItem(tuple, 7); |
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398 | 398 | return str ? PyString_AS_STRING(str) : NULL; |
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399 | 399 | } |
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400 | 400 | |
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401 | 401 | data = index_deref(self, pos); |
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402 | 402 | return data ? data + 32 : NULL; |
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403 | 403 | } |
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404 | 404 | |
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405 | 405 | static int nt_insert(indexObject *self, const char *node, int rev); |
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406 | 406 | |
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407 | 407 | static int node_check(PyObject *obj, char **node, Py_ssize_t *nodelen) |
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408 | 408 | { |
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409 | 409 | if (PyString_AsStringAndSize(obj, node, nodelen) == -1) |
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410 | 410 | return -1; |
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411 | 411 | if (*nodelen == 20) |
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412 | 412 | return 0; |
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413 | 413 | PyErr_SetString(PyExc_ValueError, "20-byte hash required"); |
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414 | 414 | return -1; |
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415 | 415 | } |
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416 | 416 | |
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417 | 417 | static PyObject *index_insert(indexObject *self, PyObject *args) |
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418 | 418 | { |
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419 | 419 | PyObject *obj; |
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420 | 420 | char *node; |
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421 | 421 | long offset; |
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422 | 422 | Py_ssize_t len, nodelen; |
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423 | 423 | |
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424 | 424 | if (!PyArg_ParseTuple(args, "lO", &offset, &obj)) |
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425 | 425 | return NULL; |
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426 | 426 | |
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427 | 427 | if (!PyTuple_Check(obj) || PyTuple_GET_SIZE(obj) != 8) { |
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428 | 428 | PyErr_SetString(PyExc_TypeError, "8-tuple required"); |
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429 | 429 | return NULL; |
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430 | 430 | } |
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431 | 431 | |
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432 | 432 | if (node_check(PyTuple_GET_ITEM(obj, 7), &node, &nodelen) == -1) |
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433 | 433 | return NULL; |
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434 | 434 | |
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435 | 435 | len = index_length(self); |
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436 | 436 | |
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437 | 437 | if (offset < 0) |
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438 | 438 | offset += len; |
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439 | 439 | |
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440 | 440 | if (offset != len - 1) { |
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441 | 441 | PyErr_SetString(PyExc_IndexError, |
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442 | 442 | "insert only supported at index -1"); |
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443 | 443 | return NULL; |
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444 | 444 | } |
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445 | 445 | |
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446 | 446 | if (offset > INT_MAX) { |
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447 | 447 | PyErr_SetString(PyExc_ValueError, |
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448 | 448 | "currently only 2**31 revs supported"); |
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449 | 449 | return NULL; |
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450 | 450 | } |
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451 | 451 | |
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452 | 452 | if (self->added == NULL) { |
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453 | 453 | self->added = PyList_New(0); |
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454 | 454 | if (self->added == NULL) |
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455 | 455 | return NULL; |
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456 | 456 | } |
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457 | 457 | |
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458 | 458 | if (PyList_Append(self->added, obj) == -1) |
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459 | 459 | return NULL; |
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460 | 460 | |
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461 | 461 | if (self->nt) |
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462 | 462 | nt_insert(self, node, (int)offset); |
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463 | 463 | |
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464 | 464 | Py_RETURN_NONE; |
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465 | 465 | } |
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466 | 466 | |
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467 | 467 | static void _index_clearcaches(indexObject *self) |
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468 | 468 | { |
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469 | 469 | if (self->cache) { |
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470 | 470 | Py_ssize_t i; |
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471 | 471 | |
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472 | 472 | for (i = 0; i < self->raw_length; i++) { |
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473 | 473 | if (self->cache[i]) { |
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474 | 474 | Py_DECREF(self->cache[i]); |
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475 | 475 | self->cache[i] = NULL; |
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476 | 476 | } |
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477 | 477 | } |
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478 | 478 | free(self->cache); |
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479 | 479 | self->cache = NULL; |
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480 | 480 | } |
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481 | 481 | if (self->offsets) { |
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482 | 482 | free(self->offsets); |
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483 | 483 | self->offsets = NULL; |
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484 | 484 | } |
|
485 | 485 | if (self->nt) { |
|
486 | 486 | free(self->nt); |
|
487 | 487 | self->nt = NULL; |
|
488 | 488 | } |
|
489 | 489 | } |
|
490 | 490 | |
|
491 | 491 | static PyObject *index_clearcaches(indexObject *self) |
|
492 | 492 | { |
|
493 | 493 | _index_clearcaches(self); |
|
494 | 494 | self->ntlength = self->ntcapacity = 0; |
|
495 | 495 | self->ntdepth = self->ntsplits = 0; |
|
496 | 496 | self->ntrev = -1; |
|
497 | 497 | self->ntlookups = self->ntmisses = 0; |
|
498 | 498 | Py_RETURN_NONE; |
|
499 | 499 | } |
|
500 | 500 | |
|
501 | 501 | static PyObject *index_stats(indexObject *self) |
|
502 | 502 | { |
|
503 | 503 | PyObject *obj = PyDict_New(); |
|
504 | 504 | |
|
505 | 505 | if (obj == NULL) |
|
506 | 506 | return NULL; |
|
507 | 507 | |
|
508 | 508 | #define istat(__n, __d) \ |
|
509 | 509 | if (PyDict_SetItemString(obj, __d, PyInt_FromLong(self->__n)) == -1) \ |
|
510 | 510 | goto bail; |
|
511 | 511 | |
|
512 | 512 | if (self->added) { |
|
513 | 513 | Py_ssize_t len = PyList_GET_SIZE(self->added); |
|
514 | 514 | if (PyDict_SetItemString(obj, "index entries added", |
|
515 | 515 | PyInt_FromLong(len)) == -1) |
|
516 | 516 | goto bail; |
|
517 | 517 | } |
|
518 | 518 | |
|
519 | 519 | if (self->raw_length != self->length - 1) |
|
520 | 520 | istat(raw_length, "revs on disk"); |
|
521 | 521 | istat(length, "revs in memory"); |
|
522 | 522 | istat(ntcapacity, "node trie capacity"); |
|
523 | 523 | istat(ntdepth, "node trie depth"); |
|
524 | 524 | istat(ntlength, "node trie count"); |
|
525 | 525 | istat(ntlookups, "node trie lookups"); |
|
526 | 526 | istat(ntmisses, "node trie misses"); |
|
527 | 527 | istat(ntrev, "node trie last rev scanned"); |
|
528 | 528 | istat(ntsplits, "node trie splits"); |
|
529 | 529 | |
|
530 | 530 | #undef istat |
|
531 | 531 | |
|
532 | 532 | return obj; |
|
533 | 533 | |
|
534 | 534 | bail: |
|
535 | 535 | Py_XDECREF(obj); |
|
536 | 536 | return NULL; |
|
537 | 537 | } |
|
538 | 538 | |
|
539 | 539 | static inline int nt_level(const char *node, int level) |
|
540 | 540 | { |
|
541 | 541 | int v = node[level>>1]; |
|
542 | 542 | if (!(level & 1)) |
|
543 | 543 | v >>= 4; |
|
544 | 544 | return v & 0xf; |
|
545 | 545 | } |
|
546 | 546 | |
|
547 | /* | |
|
548 | * Return values: | |
|
549 | * | |
|
550 | * -4: match is ambiguous (multiple candidates) | |
|
551 | * -2: not found | |
|
552 | * rest: valid rev | |
|
553 | */ | |
|
547 | 554 | static int nt_find(indexObject *self, const char *node, Py_ssize_t nodelen) |
|
548 | 555 | { |
|
549 | 556 | int level, off; |
|
550 | 557 | |
|
551 | 558 | if (nodelen == 20 && node[0] == '\0' && memcmp(node, nullid, 20) == 0) |
|
552 | 559 | return -1; |
|
553 | 560 | |
|
554 | 561 | if (self->nt == NULL) |
|
555 | 562 | return -2; |
|
556 | 563 | |
|
557 | 564 | for (level = off = 0; level < nodelen; level++) { |
|
558 | 565 | int k = nt_level(node, level); |
|
559 | 566 | nodetree *n = &self->nt[off]; |
|
560 | 567 | int v = n->children[k]; |
|
561 | 568 | |
|
562 | 569 | if (v < 0) { |
|
563 | 570 | const char *n; |
|
564 | 571 | v = -v - 1; |
|
565 | 572 | n = index_node(self, v); |
|
566 | 573 | if (n == NULL) |
|
567 | 574 | return -2; |
|
568 | 575 | return memcmp(node, n, nodelen > 20 ? 20 : nodelen) |
|
569 | 576 | ? -2 : v; |
|
570 | 577 | } |
|
571 | 578 | if (v == 0) |
|
572 | 579 | return -2; |
|
573 | 580 | off = v; |
|
574 | 581 | } |
|
575 | return -2; | |
|
582 | /* multiple matches against an ambiguous prefix */ | |
|
583 | return -4; | |
|
576 | 584 | } |
|
577 | 585 | |
|
578 | 586 | static int nt_new(indexObject *self) |
|
579 | 587 | { |
|
580 | 588 | if (self->ntlength == self->ntcapacity) { |
|
581 | 589 | self->ntcapacity *= 2; |
|
582 | 590 | self->nt = realloc(self->nt, |
|
583 | 591 | self->ntcapacity * sizeof(nodetree)); |
|
584 | 592 | if (self->nt == NULL) { |
|
585 | 593 | PyErr_SetString(PyExc_MemoryError, "out of memory"); |
|
586 | 594 | return -1; |
|
587 | 595 | } |
|
588 | 596 | memset(&self->nt[self->ntlength], 0, |
|
589 | 597 | sizeof(nodetree) * (self->ntcapacity - self->ntlength)); |
|
590 | 598 | } |
|
591 | 599 | return self->ntlength++; |
|
592 | 600 | } |
|
593 | 601 | |
|
594 | 602 | static int nt_insert(indexObject *self, const char *node, int rev) |
|
595 | 603 | { |
|
596 | 604 | int level = 0; |
|
597 | 605 | int off = 0; |
|
598 | 606 | |
|
599 | 607 | while (level < 20) { |
|
600 | 608 | int k = nt_level(node, level); |
|
601 | 609 | nodetree *n; |
|
602 | 610 | int v; |
|
603 | 611 | |
|
604 | 612 | n = &self->nt[off]; |
|
605 | 613 | v = n->children[k]; |
|
606 | 614 | |
|
607 | 615 | if (v == 0) { |
|
608 | 616 | n->children[k] = -rev - 1; |
|
609 | 617 | return 0; |
|
610 | 618 | } |
|
611 | 619 | if (v < 0) { |
|
612 | 620 | const char *oldnode = index_node(self, -v - 1); |
|
613 | 621 | int noff; |
|
614 | 622 | |
|
615 | 623 | if (!oldnode || !memcmp(oldnode, node, 20)) { |
|
616 | 624 | n->children[k] = -rev - 1; |
|
617 | 625 | return 0; |
|
618 | 626 | } |
|
619 | 627 | noff = nt_new(self); |
|
620 | 628 | if (noff == -1) |
|
621 | 629 | return -1; |
|
622 | 630 | /* self->nt may have been changed by realloc */ |
|
623 | 631 | self->nt[off].children[k] = noff; |
|
624 | 632 | off = noff; |
|
625 | 633 | n = &self->nt[off]; |
|
626 | 634 | n->children[nt_level(oldnode, ++level)] = v; |
|
627 | 635 | if (level > self->ntdepth) |
|
628 | 636 | self->ntdepth = level; |
|
629 | 637 | self->ntsplits += 1; |
|
630 | 638 | } else { |
|
631 | 639 | level += 1; |
|
632 | 640 | off = v; |
|
633 | 641 | } |
|
634 | 642 | } |
|
635 | 643 | |
|
636 | 644 | return -1; |
|
637 | 645 | } |
|
638 | 646 | |
|
639 | 647 | static int nt_init(indexObject *self) |
|
640 | 648 | { |
|
641 | 649 | if (self->nt == NULL) { |
|
642 | 650 | self->ntcapacity = self->raw_length < 4 |
|
643 | 651 | ? 4 : self->raw_length / 2; |
|
644 | 652 | self->nt = calloc(self->ntcapacity, sizeof(nodetree)); |
|
645 | 653 | if (self->nt == NULL) { |
|
646 | 654 | PyErr_NoMemory(); |
|
647 | 655 | return -1; |
|
648 | 656 | } |
|
649 | 657 | self->ntlength = 1; |
|
650 | 658 | self->ntrev = (int)index_length(self) - 1; |
|
651 | 659 | self->ntlookups = 1; |
|
652 | 660 | self->ntmisses = 0; |
|
653 | 661 | } |
|
654 | 662 | return 0; |
|
655 | 663 | } |
|
656 | 664 | |
|
657 | 665 | /* |
|
658 | 666 | * Return values: |
|
659 | 667 | * |
|
660 | 668 | * -3: error (exception set) |
|
661 | 669 | * -2: not found (no exception set) |
|
662 | 670 | * rest: valid rev |
|
663 | 671 | */ |
|
664 | 672 | static int index_find_node(indexObject *self, |
|
665 | 673 | const char *node, Py_ssize_t nodelen) |
|
666 | 674 | { |
|
667 | 675 | int rev; |
|
668 | 676 | |
|
669 | 677 | self->ntlookups++; |
|
670 | 678 | rev = nt_find(self, node, nodelen); |
|
671 | 679 | if (rev >= -1) |
|
672 | 680 | return rev; |
|
673 | 681 | |
|
674 | 682 | if (nt_init(self) == -1) |
|
675 | 683 | return -3; |
|
676 | 684 | |
|
677 | 685 | /* |
|
678 | 686 | * For the first handful of lookups, we scan the entire index, |
|
679 | 687 | * and cache only the matching nodes. This optimizes for cases |
|
680 | 688 | * like "hg tip", where only a few nodes are accessed. |
|
681 | 689 | * |
|
682 | 690 | * After that, we cache every node we visit, using a single |
|
683 | 691 | * scan amortized over multiple lookups. This gives the best |
|
684 | 692 | * bulk performance, e.g. for "hg log". |
|
685 | 693 | */ |
|
686 | 694 | if (self->ntmisses++ < 4) { |
|
687 | 695 | for (rev = self->ntrev - 1; rev >= 0; rev--) { |
|
688 | 696 | const char *n = index_node(self, rev); |
|
689 | 697 | if (n == NULL) |
|
690 | 698 | return -2; |
|
691 | 699 | if (memcmp(node, n, nodelen > 20 ? 20 : nodelen) == 0) { |
|
692 | 700 | if (nt_insert(self, n, rev) == -1) |
|
693 | 701 | return -3; |
|
694 | 702 | break; |
|
695 | 703 | } |
|
696 | 704 | } |
|
697 | 705 | } else { |
|
698 | 706 | for (rev = self->ntrev - 1; rev >= 0; rev--) { |
|
699 | 707 | const char *n = index_node(self, rev); |
|
700 | 708 | if (n == NULL) { |
|
701 | 709 | self->ntrev = rev + 1; |
|
702 | 710 | return -2; |
|
703 | 711 | } |
|
704 | 712 | if (nt_insert(self, n, rev) == -1) { |
|
705 | 713 | self->ntrev = rev + 1; |
|
706 | 714 | return -3; |
|
707 | 715 | } |
|
708 | 716 | if (memcmp(node, n, nodelen > 20 ? 20 : nodelen) == 0) { |
|
709 | 717 | break; |
|
710 | 718 | } |
|
711 | 719 | } |
|
712 | 720 | self->ntrev = rev; |
|
713 | 721 | } |
|
714 | 722 | |
|
715 | 723 | if (rev >= 0) |
|
716 | 724 | return rev; |
|
717 | 725 | return -2; |
|
718 | 726 | } |
|
719 | 727 | |
|
720 | 728 | static PyObject *raise_revlog_error(void) |
|
721 | 729 | { |
|
722 | 730 | static PyObject *errclass; |
|
723 | 731 | PyObject *mod = NULL, *errobj; |
|
724 | 732 | |
|
725 | 733 | if (errclass == NULL) { |
|
726 | 734 | PyObject *dict; |
|
727 | 735 | |
|
728 | 736 | mod = PyImport_ImportModule("mercurial.error"); |
|
729 | 737 | if (mod == NULL) |
|
730 | 738 | goto classfail; |
|
731 | 739 | |
|
732 | 740 | dict = PyModule_GetDict(mod); |
|
733 | 741 | if (dict == NULL) |
|
734 | 742 | goto classfail; |
|
735 | 743 | |
|
736 | 744 | errclass = PyDict_GetItemString(dict, "RevlogError"); |
|
737 | 745 | if (errclass == NULL) { |
|
738 | 746 | PyErr_SetString(PyExc_SystemError, |
|
739 | 747 | "could not find RevlogError"); |
|
740 | 748 | goto classfail; |
|
741 | 749 | } |
|
742 | 750 | Py_INCREF(errclass); |
|
743 | 751 | } |
|
744 | 752 | |
|
745 | 753 | errobj = PyObject_CallFunction(errclass, NULL); |
|
746 | 754 | if (errobj == NULL) |
|
747 | 755 | return NULL; |
|
748 | 756 | PyErr_SetObject(errclass, errobj); |
|
749 | 757 | return errobj; |
|
750 | 758 | |
|
751 | 759 | classfail: |
|
752 | 760 | Py_XDECREF(mod); |
|
753 | 761 | return NULL; |
|
754 | 762 | } |
|
755 | 763 | |
|
756 | 764 | static PyObject *index_getitem(indexObject *self, PyObject *value) |
|
757 | 765 | { |
|
758 | 766 | char *node; |
|
759 | 767 | Py_ssize_t nodelen; |
|
760 | 768 | int rev; |
|
761 | 769 | |
|
762 | 770 | if (PyInt_Check(value)) |
|
763 | 771 | return index_get(self, PyInt_AS_LONG(value)); |
|
764 | 772 | |
|
765 | 773 | if (PyString_AsStringAndSize(value, &node, &nodelen) == -1) |
|
766 | 774 | return NULL; |
|
767 | 775 | rev = index_find_node(self, node, nodelen); |
|
768 | 776 | if (rev >= -1) |
|
769 | 777 | return PyInt_FromLong(rev); |
|
770 | 778 | if (rev == -2) |
|
771 | 779 | raise_revlog_error(); |
|
772 | 780 | return NULL; |
|
773 | 781 | } |
|
774 | 782 | |
|
775 | 783 | static PyObject *index_m_get(indexObject *self, PyObject *args) |
|
776 | 784 | { |
|
777 | 785 | char *node; |
|
778 | 786 | int nodelen, rev; |
|
779 | 787 | |
|
780 | 788 | if (!PyArg_ParseTuple(args, "s#", &node, &nodelen)) |
|
781 | 789 | return NULL; |
|
782 | 790 | |
|
783 | 791 | rev = index_find_node(self, node, nodelen); |
|
784 | 792 | if (rev == -3) |
|
785 | 793 | return NULL; |
|
786 | 794 | if (rev == -2) |
|
787 | 795 | Py_RETURN_NONE; |
|
788 | 796 | return PyInt_FromLong(rev); |
|
789 | 797 | } |
|
790 | 798 | |
|
791 | 799 | static int index_contains(indexObject *self, PyObject *value) |
|
792 | 800 | { |
|
793 | 801 | char *node; |
|
794 | 802 | Py_ssize_t nodelen; |
|
795 | 803 | |
|
796 | 804 | if (PyInt_Check(value)) { |
|
797 | 805 | long rev = PyInt_AS_LONG(value); |
|
798 | 806 | return rev >= -1 && rev < index_length(self); |
|
799 | 807 | } |
|
800 | 808 | |
|
801 | 809 | if (!PyString_Check(value)) |
|
802 | 810 | return 0; |
|
803 | 811 | |
|
804 | 812 | node = PyString_AS_STRING(value); |
|
805 | 813 | nodelen = PyString_GET_SIZE(value); |
|
806 | 814 | |
|
807 | 815 | switch (index_find_node(self, node, nodelen)) { |
|
808 | 816 | case -3: |
|
809 | 817 | return -1; |
|
810 | 818 | case -2: |
|
811 | 819 | return 0; |
|
812 | 820 | default: |
|
813 | 821 | return 1; |
|
814 | 822 | } |
|
815 | 823 | } |
|
816 | 824 | |
|
817 | 825 | /* |
|
818 | 826 | * Invalidate any trie entries introduced by added revs. |
|
819 | 827 | */ |
|
820 | 828 | static void nt_invalidate_added(indexObject *self, Py_ssize_t start) |
|
821 | 829 | { |
|
822 | 830 | Py_ssize_t i, len = PyList_GET_SIZE(self->added); |
|
823 | 831 | |
|
824 | 832 | for (i = start; i < len; i++) { |
|
825 | 833 | PyObject *tuple = PyList_GET_ITEM(self->added, i); |
|
826 | 834 | PyObject *node = PyTuple_GET_ITEM(tuple, 7); |
|
827 | 835 | |
|
828 | 836 | nt_insert(self, PyString_AS_STRING(node), -1); |
|
829 | 837 | } |
|
830 | 838 | |
|
831 | 839 | if (start == 0) { |
|
832 | 840 | Py_DECREF(self->added); |
|
833 | 841 | self->added = NULL; |
|
834 | 842 | } |
|
835 | 843 | } |
|
836 | 844 | |
|
837 | 845 | /* |
|
838 | 846 | * Delete a numeric range of revs, which must be at the end of the |
|
839 | 847 | * range, but exclude the sentinel nullid entry. |
|
840 | 848 | */ |
|
841 | 849 | static int index_slice_del(indexObject *self, PyObject *item) |
|
842 | 850 | { |
|
843 | 851 | Py_ssize_t start, stop, step, slicelength; |
|
844 | 852 | Py_ssize_t length = index_length(self); |
|
845 | 853 | |
|
846 | 854 | if (PySlice_GetIndicesEx((PySliceObject*)item, length, |
|
847 | 855 | &start, &stop, &step, &slicelength) < 0) |
|
848 | 856 | return -1; |
|
849 | 857 | |
|
850 | 858 | if (slicelength <= 0) |
|
851 | 859 | return 0; |
|
852 | 860 | |
|
853 | 861 | if ((step < 0 && start < stop) || (step > 0 && start > stop)) |
|
854 | 862 | stop = start; |
|
855 | 863 | |
|
856 | 864 | if (step < 0) { |
|
857 | 865 | stop = start + 1; |
|
858 | 866 | start = stop + step*(slicelength - 1) - 1; |
|
859 | 867 | step = -step; |
|
860 | 868 | } |
|
861 | 869 | |
|
862 | 870 | if (step != 1) { |
|
863 | 871 | PyErr_SetString(PyExc_ValueError, |
|
864 | 872 | "revlog index delete requires step size of 1"); |
|
865 | 873 | return -1; |
|
866 | 874 | } |
|
867 | 875 | |
|
868 | 876 | if (stop != length - 1) { |
|
869 | 877 | PyErr_SetString(PyExc_IndexError, |
|
870 | 878 | "revlog index deletion indices are invalid"); |
|
871 | 879 | return -1; |
|
872 | 880 | } |
|
873 | 881 | |
|
874 | 882 | if (start < self->length - 1) { |
|
875 | 883 | if (self->nt) { |
|
876 | 884 | Py_ssize_t i; |
|
877 | 885 | |
|
878 | 886 | for (i = start + 1; i < self->length - 1; i++) { |
|
879 | 887 | const char *node = index_node(self, i); |
|
880 | 888 | |
|
881 | 889 | if (node) |
|
882 | 890 | nt_insert(self, node, -1); |
|
883 | 891 | } |
|
884 | 892 | if (self->added) |
|
885 | 893 | nt_invalidate_added(self, 0); |
|
886 | 894 | if (self->ntrev > start) |
|
887 | 895 | self->ntrev = (int)start; |
|
888 | 896 | } |
|
889 | 897 | self->length = start + 1; |
|
890 | 898 | return 0; |
|
891 | 899 | } |
|
892 | 900 | |
|
893 | 901 | if (self->nt) { |
|
894 | 902 | nt_invalidate_added(self, start - self->length + 1); |
|
895 | 903 | if (self->ntrev > start) |
|
896 | 904 | self->ntrev = (int)start; |
|
897 | 905 | } |
|
898 | 906 | return self->added |
|
899 | 907 | ? PyList_SetSlice(self->added, start - self->length + 1, |
|
900 | 908 | PyList_GET_SIZE(self->added), NULL) |
|
901 | 909 | : 0; |
|
902 | 910 | } |
|
903 | 911 | |
|
904 | 912 | /* |
|
905 | 913 | * Supported ops: |
|
906 | 914 | * |
|
907 | 915 | * slice deletion |
|
908 | 916 | * string assignment (extend node->rev mapping) |
|
909 | 917 | * string deletion (shrink node->rev mapping) |
|
910 | 918 | */ |
|
911 | 919 | static int index_assign_subscript(indexObject *self, PyObject *item, |
|
912 | 920 | PyObject *value) |
|
913 | 921 | { |
|
914 | 922 | char *node; |
|
915 | 923 | Py_ssize_t nodelen; |
|
916 | 924 | long rev; |
|
917 | 925 | |
|
918 | 926 | if (PySlice_Check(item) && value == NULL) |
|
919 | 927 | return index_slice_del(self, item); |
|
920 | 928 | |
|
921 | 929 | if (node_check(item, &node, &nodelen) == -1) |
|
922 | 930 | return -1; |
|
923 | 931 | |
|
924 | 932 | if (value == NULL) |
|
925 | 933 | return self->nt ? nt_insert(self, node, -1) : 0; |
|
926 | 934 | rev = PyInt_AsLong(value); |
|
927 | 935 | if (rev > INT_MAX || rev < 0) { |
|
928 | 936 | if (!PyErr_Occurred()) |
|
929 | 937 | PyErr_SetString(PyExc_ValueError, "rev out of range"); |
|
930 | 938 | return -1; |
|
931 | 939 | } |
|
932 | 940 | return nt_insert(self, node, (int)rev); |
|
933 | 941 | } |
|
934 | 942 | |
|
935 | 943 | /* |
|
936 | 944 | * Find all RevlogNG entries in an index that has inline data. Update |
|
937 | 945 | * the optional "offsets" table with those entries. |
|
938 | 946 | */ |
|
939 | 947 | static long inline_scan(indexObject *self, const char **offsets) |
|
940 | 948 | { |
|
941 | 949 | const char *data = PyString_AS_STRING(self->data); |
|
942 | 950 | const char *end = data + PyString_GET_SIZE(self->data); |
|
943 | 951 | const long hdrsize = 64; |
|
944 | 952 | long incr = hdrsize; |
|
945 | 953 | Py_ssize_t len = 0; |
|
946 | 954 | |
|
947 | 955 | while (data + hdrsize <= end) { |
|
948 | 956 | uint32_t comp_len; |
|
949 | 957 | const char *old_data; |
|
950 | 958 | /* 3rd element of header is length of compressed inline data */ |
|
951 | 959 | comp_len = getbe32(data + 8); |
|
952 | 960 | incr = hdrsize + comp_len; |
|
953 | 961 | if (incr < hdrsize) |
|
954 | 962 | break; |
|
955 | 963 | if (offsets) |
|
956 | 964 | offsets[len] = data; |
|
957 | 965 | len++; |
|
958 | 966 | old_data = data; |
|
959 | 967 | data += incr; |
|
960 | 968 | if (data <= old_data) |
|
961 | 969 | break; |
|
962 | 970 | } |
|
963 | 971 | |
|
964 | 972 | if (data != end && data + hdrsize != end) { |
|
965 | 973 | if (!PyErr_Occurred()) |
|
966 | 974 | PyErr_SetString(PyExc_ValueError, "corrupt index file"); |
|
967 | 975 | return -1; |
|
968 | 976 | } |
|
969 | 977 | |
|
970 | 978 | return len; |
|
971 | 979 | } |
|
972 | 980 | |
|
973 | 981 | static int index_init(indexObject *self, PyObject *args) |
|
974 | 982 | { |
|
975 | 983 | PyObject *data_obj, *inlined_obj; |
|
976 | 984 | Py_ssize_t size; |
|
977 | 985 | |
|
978 | 986 | if (!PyArg_ParseTuple(args, "OO", &data_obj, &inlined_obj)) |
|
979 | 987 | return -1; |
|
980 | 988 | if (!PyString_Check(data_obj)) { |
|
981 | 989 | PyErr_SetString(PyExc_TypeError, "data is not a string"); |
|
982 | 990 | return -1; |
|
983 | 991 | } |
|
984 | 992 | size = PyString_GET_SIZE(data_obj); |
|
985 | 993 | |
|
986 | 994 | self->inlined = inlined_obj && PyObject_IsTrue(inlined_obj); |
|
987 | 995 | self->data = data_obj; |
|
988 | 996 | self->cache = NULL; |
|
989 | 997 | |
|
990 | 998 | self->added = NULL; |
|
991 | 999 | self->offsets = NULL; |
|
992 | 1000 | self->nt = NULL; |
|
993 | 1001 | self->ntlength = self->ntcapacity = 0; |
|
994 | 1002 | self->ntdepth = self->ntsplits = 0; |
|
995 | 1003 | self->ntlookups = self->ntmisses = 0; |
|
996 | 1004 | self->ntrev = -1; |
|
997 | 1005 | Py_INCREF(self->data); |
|
998 | 1006 | |
|
999 | 1007 | if (self->inlined) { |
|
1000 | 1008 | long len = inline_scan(self, NULL); |
|
1001 | 1009 | if (len == -1) |
|
1002 | 1010 | goto bail; |
|
1003 | 1011 | self->raw_length = len; |
|
1004 | 1012 | self->length = len + 1; |
|
1005 | 1013 | } else { |
|
1006 | 1014 | if (size % 64) { |
|
1007 | 1015 | PyErr_SetString(PyExc_ValueError, "corrupt index file"); |
|
1008 | 1016 | goto bail; |
|
1009 | 1017 | } |
|
1010 | 1018 | self->raw_length = size / 64; |
|
1011 | 1019 | self->length = self->raw_length + 1; |
|
1012 | 1020 | } |
|
1013 | 1021 | |
|
1014 | 1022 | return 0; |
|
1015 | 1023 | bail: |
|
1016 | 1024 | return -1; |
|
1017 | 1025 | } |
|
1018 | 1026 | |
|
1019 | 1027 | static PyObject *index_nodemap(indexObject *self) |
|
1020 | 1028 | { |
|
1021 | 1029 | Py_INCREF(self); |
|
1022 | 1030 | return (PyObject *)self; |
|
1023 | 1031 | } |
|
1024 | 1032 | |
|
1025 | 1033 | static void index_dealloc(indexObject *self) |
|
1026 | 1034 | { |
|
1027 | 1035 | _index_clearcaches(self); |
|
1028 | 1036 | Py_DECREF(self->data); |
|
1029 | 1037 | Py_XDECREF(self->added); |
|
1030 | 1038 | PyObject_Del(self); |
|
1031 | 1039 | } |
|
1032 | 1040 | |
|
1033 | 1041 | static PySequenceMethods index_sequence_methods = { |
|
1034 | 1042 | (lenfunc)index_length, /* sq_length */ |
|
1035 | 1043 | 0, /* sq_concat */ |
|
1036 | 1044 | 0, /* sq_repeat */ |
|
1037 | 1045 | (ssizeargfunc)index_get, /* sq_item */ |
|
1038 | 1046 | 0, /* sq_slice */ |
|
1039 | 1047 | 0, /* sq_ass_item */ |
|
1040 | 1048 | 0, /* sq_ass_slice */ |
|
1041 | 1049 | (objobjproc)index_contains, /* sq_contains */ |
|
1042 | 1050 | }; |
|
1043 | 1051 | |
|
1044 | 1052 | static PyMappingMethods index_mapping_methods = { |
|
1045 | 1053 | (lenfunc)index_length, /* mp_length */ |
|
1046 | 1054 | (binaryfunc)index_getitem, /* mp_subscript */ |
|
1047 | 1055 | (objobjargproc)index_assign_subscript, /* mp_ass_subscript */ |
|
1048 | 1056 | }; |
|
1049 | 1057 | |
|
1050 | 1058 | static PyMethodDef index_methods[] = { |
|
1051 | 1059 | {"clearcaches", (PyCFunction)index_clearcaches, METH_NOARGS, |
|
1052 | 1060 | "clear the index caches"}, |
|
1053 | 1061 | {"get", (PyCFunction)index_m_get, METH_VARARGS, |
|
1054 | 1062 | "get an index entry"}, |
|
1055 | 1063 | {"insert", (PyCFunction)index_insert, METH_VARARGS, |
|
1056 | 1064 | "insert an index entry"}, |
|
1057 | 1065 | {"stats", (PyCFunction)index_stats, METH_NOARGS, |
|
1058 | 1066 | "stats for the index"}, |
|
1059 | 1067 | {NULL} /* Sentinel */ |
|
1060 | 1068 | }; |
|
1061 | 1069 | |
|
1062 | 1070 | static PyGetSetDef index_getset[] = { |
|
1063 | 1071 | {"nodemap", (getter)index_nodemap, NULL, "nodemap", NULL}, |
|
1064 | 1072 | {NULL} /* Sentinel */ |
|
1065 | 1073 | }; |
|
1066 | 1074 | |
|
1067 | 1075 | static PyTypeObject indexType = { |
|
1068 | 1076 | PyObject_HEAD_INIT(NULL) |
|
1069 | 1077 | 0, /* ob_size */ |
|
1070 | 1078 | "parsers.index", /* tp_name */ |
|
1071 | 1079 | sizeof(indexObject), /* tp_basicsize */ |
|
1072 | 1080 | 0, /* tp_itemsize */ |
|
1073 | 1081 | (destructor)index_dealloc, /* tp_dealloc */ |
|
1074 | 1082 | 0, /* tp_print */ |
|
1075 | 1083 | 0, /* tp_getattr */ |
|
1076 | 1084 | 0, /* tp_setattr */ |
|
1077 | 1085 | 0, /* tp_compare */ |
|
1078 | 1086 | 0, /* tp_repr */ |
|
1079 | 1087 | 0, /* tp_as_number */ |
|
1080 | 1088 | &index_sequence_methods, /* tp_as_sequence */ |
|
1081 | 1089 | &index_mapping_methods, /* tp_as_mapping */ |
|
1082 | 1090 | 0, /* tp_hash */ |
|
1083 | 1091 | 0, /* tp_call */ |
|
1084 | 1092 | 0, /* tp_str */ |
|
1085 | 1093 | 0, /* tp_getattro */ |
|
1086 | 1094 | 0, /* tp_setattro */ |
|
1087 | 1095 | 0, /* tp_as_buffer */ |
|
1088 | 1096 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
|
1089 | 1097 | "revlog index", /* tp_doc */ |
|
1090 | 1098 | 0, /* tp_traverse */ |
|
1091 | 1099 | 0, /* tp_clear */ |
|
1092 | 1100 | 0, /* tp_richcompare */ |
|
1093 | 1101 | 0, /* tp_weaklistoffset */ |
|
1094 | 1102 | 0, /* tp_iter */ |
|
1095 | 1103 | 0, /* tp_iternext */ |
|
1096 | 1104 | index_methods, /* tp_methods */ |
|
1097 | 1105 | 0, /* tp_members */ |
|
1098 | 1106 | index_getset, /* tp_getset */ |
|
1099 | 1107 | 0, /* tp_base */ |
|
1100 | 1108 | 0, /* tp_dict */ |
|
1101 | 1109 | 0, /* tp_descr_get */ |
|
1102 | 1110 | 0, /* tp_descr_set */ |
|
1103 | 1111 | 0, /* tp_dictoffset */ |
|
1104 | 1112 | (initproc)index_init, /* tp_init */ |
|
1105 | 1113 | 0, /* tp_alloc */ |
|
1106 | 1114 | PyType_GenericNew, /* tp_new */ |
|
1107 | 1115 | }; |
|
1108 | 1116 | |
|
1109 | 1117 | /* |
|
1110 | 1118 | * returns a tuple of the form (index, index, cache) with elements as |
|
1111 | 1119 | * follows: |
|
1112 | 1120 | * |
|
1113 | 1121 | * index: an index object that lazily parses RevlogNG records |
|
1114 | 1122 | * cache: if data is inlined, a tuple (index_file_content, 0), else None |
|
1115 | 1123 | * |
|
1116 | 1124 | * added complications are for backwards compatibility |
|
1117 | 1125 | */ |
|
1118 | 1126 | static PyObject *parse_index2(PyObject *self, PyObject *args) |
|
1119 | 1127 | { |
|
1120 | 1128 | PyObject *tuple = NULL, *cache = NULL; |
|
1121 | 1129 | indexObject *idx; |
|
1122 | 1130 | int ret; |
|
1123 | 1131 | |
|
1124 | 1132 | idx = PyObject_New(indexObject, &indexType); |
|
1125 | 1133 | if (idx == NULL) |
|
1126 | 1134 | goto bail; |
|
1127 | 1135 | |
|
1128 | 1136 | ret = index_init(idx, args); |
|
1129 | 1137 | if (ret == -1) |
|
1130 | 1138 | goto bail; |
|
1131 | 1139 | |
|
1132 | 1140 | if (idx->inlined) { |
|
1133 | 1141 | cache = Py_BuildValue("iO", 0, idx->data); |
|
1134 | 1142 | if (cache == NULL) |
|
1135 | 1143 | goto bail; |
|
1136 | 1144 | } else { |
|
1137 | 1145 | cache = Py_None; |
|
1138 | 1146 | Py_INCREF(cache); |
|
1139 | 1147 | } |
|
1140 | 1148 | |
|
1141 | 1149 | tuple = Py_BuildValue("NN", idx, cache); |
|
1142 | 1150 | if (!tuple) |
|
1143 | 1151 | goto bail; |
|
1144 | 1152 | return tuple; |
|
1145 | 1153 | |
|
1146 | 1154 | bail: |
|
1147 | 1155 | Py_XDECREF(idx); |
|
1148 | 1156 | Py_XDECREF(cache); |
|
1149 | 1157 | Py_XDECREF(tuple); |
|
1150 | 1158 | return NULL; |
|
1151 | 1159 | } |
|
1152 | 1160 | |
|
1153 | 1161 | static char parsers_doc[] = "Efficient content parsing."; |
|
1154 | 1162 | |
|
1155 | 1163 | static PyMethodDef methods[] = { |
|
1156 | 1164 | {"parse_manifest", parse_manifest, METH_VARARGS, "parse a manifest\n"}, |
|
1157 | 1165 | {"parse_dirstate", parse_dirstate, METH_VARARGS, "parse a dirstate\n"}, |
|
1158 | 1166 | {"parse_index2", parse_index2, METH_VARARGS, "parse a revlog index\n"}, |
|
1159 | 1167 | {NULL, NULL} |
|
1160 | 1168 | }; |
|
1161 | 1169 | |
|
1162 | 1170 | static void module_init(PyObject *mod) |
|
1163 | 1171 | { |
|
1164 | 1172 | if (PyType_Ready(&indexType) < 0) |
|
1165 | 1173 | return; |
|
1166 | 1174 | Py_INCREF(&indexType); |
|
1167 | 1175 | |
|
1168 | 1176 | PyModule_AddObject(mod, "index", (PyObject *)&indexType); |
|
1169 | 1177 | |
|
1170 | 1178 | nullentry = Py_BuildValue("iiiiiiis#", 0, 0, 0, |
|
1171 | 1179 | -1, -1, -1, -1, nullid, 20); |
|
1172 | 1180 | if (nullentry) |
|
1173 | 1181 | PyObject_GC_UnTrack(nullentry); |
|
1174 | 1182 | } |
|
1175 | 1183 | |
|
1176 | 1184 | #ifdef IS_PY3K |
|
1177 | 1185 | static struct PyModuleDef parsers_module = { |
|
1178 | 1186 | PyModuleDef_HEAD_INIT, |
|
1179 | 1187 | "parsers", |
|
1180 | 1188 | parsers_doc, |
|
1181 | 1189 | -1, |
|
1182 | 1190 | methods |
|
1183 | 1191 | }; |
|
1184 | 1192 | |
|
1185 | 1193 | PyMODINIT_FUNC PyInit_parsers(void) |
|
1186 | 1194 | { |
|
1187 | 1195 | PyObject *mod = PyModule_Create(&parsers_module); |
|
1188 | 1196 | module_init(mod); |
|
1189 | 1197 | return mod; |
|
1190 | 1198 | } |
|
1191 | 1199 | #else |
|
1192 | 1200 | PyMODINIT_FUNC initparsers(void) |
|
1193 | 1201 | { |
|
1194 | 1202 | PyObject *mod = Py_InitModule3("parsers", methods, parsers_doc); |
|
1195 | 1203 | module_init(mod); |
|
1196 | 1204 | } |
|
1197 | 1205 | #endif |
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