Mercurial > cpython-lru_cache-weakref
annotate Python/sysmodule.c @ 14375:6f6f965c5e2d legacy-trunk
REMOVED all CWI, CNRI and BeOpen copyright markings.
This should match the situation in the 1.6b1 tree.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 01 Sep 2000 23:29:29 +0000 |
| parents | b8b3f76ffd51 |
| children | f0ca4c67957b |
| rev | line source |
|---|---|
| 145 | 1 |
| 6 | 2 /* System module */ |
| 3 | |
| 4 /* | |
| 5 Various bits of information used by the interpreter are collected in | |
| 6 module 'sys'. | |
| 86 | 7 Function member: |
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8 - exit(sts): raise SystemExit |
| 6 | 9 Data members: |
| 10 - stdin, stdout, stderr: standard file objects | |
| 86 | 11 - modules: the table of modules (dictionary) |
| 6 | 12 - path: module search path (list of strings) |
| 86 | 13 - argv: script arguments (list of strings) |
| 14 - ps1, ps2: optional primary and secondary prompts (strings) | |
| 6 | 15 */ |
| 16 | |
| 5372 | 17 #include "Python.h" |
| 86 | 18 |
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19 #include "osdefs.h" |
| 86 | 20 |
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21 #ifdef HAVE_UNISTD_H |
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22 #include <unistd.h> |
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23 #endif |
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24 |
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25 #ifdef MS_COREDLL |
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26 extern void *PyWin_DLLhModule; |
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27 /* A string loaded from the DLL at startup: */ |
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28 extern const char *PyWin_DLLVersionString; |
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29 #endif |
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30 |
| 5372 | 31 PyObject * |
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32 PySys_GetObject(char *name) |
| 6 | 33 { |
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34 PyThreadState *tstate = PyThreadState_Get(); |
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35 PyObject *sd = tstate->interp->sysdict; |
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36 if (sd == NULL) |
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37 return NULL; |
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38 return PyDict_GetItemString(sd, name); |
| 6 | 39 } |
| 40 | |
| 41 FILE * | |
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42 PySys_GetFile(char *name, FILE *def) |
| 6 | 43 { |
| 44 FILE *fp = NULL; | |
| 5372 | 45 PyObject *v = PySys_GetObject(name); |
| 46 if (v != NULL && PyFile_Check(v)) | |
| 47 fp = PyFile_AsFile(v); | |
| 6 | 48 if (fp == NULL) |
| 49 fp = def; | |
| 50 return fp; | |
| 51 } | |
| 52 | |
| 53 int | |
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54 PySys_SetObject(char *name, PyObject *v) |
| 6 | 55 { |
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56 PyThreadState *tstate = PyThreadState_Get(); |
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57 PyObject *sd = tstate->interp->sysdict; |
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58 if (v == NULL) { |
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59 if (PyDict_GetItemString(sd, name) == NULL) |
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60 return 0; |
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61 else |
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62 return PyDict_DelItemString(sd, name); |
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63 } |
| 6 | 64 else |
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65 return PyDict_SetItemString(sd, name, v); |
| 6 | 66 } |
| 67 | |
| 5372 | 68 static PyObject * |
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69 sys_exc_info(PyObject *self, PyObject *args) |
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70 { |
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71 PyThreadState *tstate; |
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72 if (!PyArg_ParseTuple(args, ":exc_info")) |
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73 return NULL; |
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74 tstate = PyThreadState_Get(); |
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75 return Py_BuildValue( |
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76 "(OOO)", |
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77 tstate->exc_type != NULL ? tstate->exc_type : Py_None, |
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78 tstate->exc_value != NULL ? tstate->exc_value : Py_None, |
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79 tstate->exc_traceback != NULL ? |
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80 tstate->exc_traceback : Py_None); |
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81 } |
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82 |
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83 static char exc_info_doc[] = |
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84 "exc_info() -> (type, value, traceback)\n\ |
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85 \n\ |
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86 Return information about the exception that is currently being handled.\n\ |
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87 This should be called from inside an except clause only."; |
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88 |
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89 static PyObject * |
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90 sys_exit(PyObject *self, PyObject *args) |
| 6 | 91 { |
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92 /* Raise SystemExit so callers may catch it or clean up. */ |
| 5372 | 93 PyErr_SetObject(PyExc_SystemExit, args); |
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94 return NULL; |
| 6 | 95 } |
| 96 | |
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97 static char exit_doc[] = |
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98 "exit([status])\n\ |
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99 \n\ |
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100 Exit the interpreter by raising SystemExit(status).\n\ |
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101 If the status is omitted or None, it defaults to zero (i.e., success).\n\ |
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102 If the status numeric, it will be used as the system exit status.\n\ |
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103 If it is another kind of object, it will be printed and the system\n\ |
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104 exit status will be one (i.e., failure)."; |
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105 |
| 5372 | 106 static PyObject * |
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107 sys_getdefaultencoding(PyObject *self, PyObject *args) |
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108 { |
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109 if (!PyArg_ParseTuple(args, ":getdefaultencoding")) |
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110 return NULL; |
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111 return PyString_FromString(PyUnicode_GetDefaultEncoding()); |
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112 } |
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113 |
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114 static char getdefaultencoding_doc[] = |
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115 "getdefaultencoding() -> string\n\ |
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116 \n\ |
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117 Return the current default string encoding used by the Unicode \n\ |
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118 implementation."; |
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119 |
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120 static PyObject * |
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121 sys_setdefaultencoding(PyObject *self, PyObject *args) |
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122 { |
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123 char *encoding; |
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124 if (!PyArg_ParseTuple(args, "s:setdefaultencoding", &encoding)) |
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125 return NULL; |
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126 if (PyUnicode_SetDefaultEncoding(encoding)) |
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127 return NULL; |
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128 Py_INCREF(Py_None); |
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129 return Py_None; |
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130 } |
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131 |
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132 static char setdefaultencoding_doc[] = |
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133 "setdefaultencoding(encoding)\n\ |
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134 \n\ |
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135 Set the current default string encoding used by the Unicode implementation."; |
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136 |
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137 static PyObject * |
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138 sys_settrace(PyObject *self, PyObject *args) |
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139 { |
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140 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 141 if (args == Py_None) |
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142 args = NULL; |
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143 else |
| 5372 | 144 Py_XINCREF(args); |
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145 Py_XDECREF(tstate->sys_tracefunc); |
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146 tstate->sys_tracefunc = args; |
| 5372 | 147 Py_INCREF(Py_None); |
| 148 return Py_None; | |
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149 } |
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150 |
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151 static char settrace_doc[] = |
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152 "settrace(function)\n\ |
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153 \n\ |
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154 Set the global debug tracing function. It will be called on each\n\ |
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155 function call. See the debugger chapter in the library manual."; |
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156 |
| 5372 | 157 static PyObject * |
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158 sys_setprofile(PyObject *self, PyObject *args) |
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159 { |
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160 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 161 if (args == Py_None) |
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162 args = NULL; |
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163 else |
| 5372 | 164 Py_XINCREF(args); |
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165 Py_XDECREF(tstate->sys_profilefunc); |
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166 tstate->sys_profilefunc = args; |
| 5372 | 167 Py_INCREF(Py_None); |
| 168 return Py_None; | |
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169 } |
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170 |
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171 static char setprofile_doc[] = |
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172 "setprofile(function)\n\ |
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173 \n\ |
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174 Set the profiling function. It will be called on each function call\n\ |
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175 and return. See the profiler chapter in the library manual."; |
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176 |
| 5372 | 177 static PyObject * |
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178 sys_setcheckinterval(PyObject *self, PyObject *args) |
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179 { |
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180 PyThreadState *tstate = PyThreadState_Get(); |
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181 if (!PyArg_ParseTuple(args, "i:setcheckinterval", &tstate->interp->checkinterval)) |
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182 return NULL; |
| 5372 | 183 Py_INCREF(Py_None); |
| 184 return Py_None; | |
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185 } |
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186 |
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187 static char setcheckinterval_doc[] = |
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188 "setcheckinterval(n)\n\ |
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189 \n\ |
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190 Tell the Python interpreter to check for asynchronous events every\n\ |
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191 n instructions. This also affects how often thread switches occur."; |
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192 |
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193 static PyObject * |
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194 sys_setrecursionlimit(PyObject *self, PyObject *args) |
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195 { |
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196 int new_limit; |
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197 if (!PyArg_ParseTuple(args, "i:setrecursionlimit", &new_limit)) |
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198 return NULL; |
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199 if (new_limit <= 0) { |
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200 PyErr_SetString(PyExc_ValueError, |
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201 "recursion limit must be positive"); |
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202 return NULL; |
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203 } |
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204 Py_SetRecursionLimit(new_limit); |
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205 Py_INCREF(Py_None); |
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206 return Py_None; |
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207 } |
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208 |
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209 static char setrecursionlimit_doc[] = |
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210 "setrecursionlimit(n)\n\ |
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211 \n\ |
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212 Set the maximum depth of the Python interpreter stack to n. This\n\ |
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213 limit prevents infinite recursion from causing an overflow of the C\n\ |
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214 stack and crashing Python. The highest possible limit is platform-\n\ |
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215 dependent."; |
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216 |
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217 static PyObject * |
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218 sys_getrecursionlimit(PyObject *self, PyObject *args) |
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219 { |
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220 if (!PyArg_ParseTuple(args, ":getrecursionlimit")) |
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221 return NULL; |
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222 return PyInt_FromLong(Py_GetRecursionLimit()); |
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223 } |
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224 |
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225 static char getrecursionlimit_doc[] = |
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226 "getrecursionlimit()\n\ |
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227 \n\ |
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228 Return the current value of the recursion limit, the maximum depth\n\ |
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229 of the Python interpreter stack. This limit prevents infinite\n\ |
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230 recursion from causing an overflow of the C stack and crashing Python."; |
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231 |
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232 #ifdef USE_MALLOPT |
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233 /* Link with -lmalloc (or -lmpc) on an SGI */ |
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234 #include <malloc.h> |
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235 |
| 5372 | 236 static PyObject * |
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237 sys_mdebug(PyObject *self, PyObject *args) |
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238 { |
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239 int flag; |
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240 if (!PyArg_ParseTuple(args, "i:mdebug", &flag)) |
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241 return NULL; |
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242 mallopt(M_DEBUG, flag); |
| 5372 | 243 Py_INCREF(Py_None); |
| 244 return Py_None; | |
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245 } |
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246 #endif /* USE_MALLOPT */ |
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247 |
| 5372 | 248 static PyObject * |
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249 sys_getrefcount(PyObject *self, PyObject *args) |
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250 { |
| 5372 | 251 PyObject *arg; |
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252 if (!PyArg_ParseTuple(args, "O:getrefcount", &arg)) |
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253 return NULL; |
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254 return PyInt_FromLong(arg->ob_refcnt); |
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255 } |
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256 |
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257 #ifdef Py_TRACE_REFS |
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258 static PyObject * |
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259 sys_gettotalrefcount(PyObject *self, PyObject *args) |
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260 { |
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261 extern long _Py_RefTotal; |
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262 if (!PyArg_ParseTuple(args, ":gettotalrefcount")) |
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263 return NULL; |
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264 return PyInt_FromLong(_Py_RefTotal); |
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265 } |
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266 |
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267 #endif /* Py_TRACE_REFS */ |
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268 |
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269 static char getrefcount_doc[] = |
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270 "getrefcount(object) -> integer\n\ |
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271 \n\ |
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272 Return the current reference count for the object. This includes the\n\ |
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273 temporary reference in the argument list, so it is at least 2."; |
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274 |
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275 #ifdef COUNT_ALLOCS |
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276 static PyObject * |
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277 sys_getcounts(PyObject *self, PyObject *args) |
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278 { |
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279 extern PyObject *get_counts(void); |
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280 |
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281 if (!PyArg_ParseTuple(args, ":getcounts")) |
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282 return NULL; |
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283 return get_counts(); |
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284 } |
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285 #endif |
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286 |
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287 #ifdef Py_TRACE_REFS |
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288 /* Defined in objects.c because it uses static globals if that file */ |
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289 extern PyObject *_Py_GetObjects(PyObject *, PyObject *); |
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290 #endif |
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291 |
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292 #ifdef DYNAMIC_EXECUTION_PROFILE |
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293 /* Defined in ceval.c because it uses static globals if that file */ |
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294 extern PyObject *_Py_GetDXProfile(PyObject *, PyObject *); |
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295 #endif |
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296 |
| 5372 | 297 static PyMethodDef sys_methods[] = { |
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298 /* Might as well keep this in alphabetic order */ |
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299 {"exc_info", sys_exc_info, 1, exc_info_doc}, |
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300 {"exit", sys_exit, 0, exit_doc}, |
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301 {"getdefaultencoding", sys_getdefaultencoding, 1, |
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302 getdefaultencoding_doc}, |
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303 #ifdef COUNT_ALLOCS |
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304 {"getcounts", sys_getcounts, 1}, |
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305 #endif |
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306 #ifdef DYNAMIC_EXECUTION_PROFILE |
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307 {"getdxp", _Py_GetDXProfile, 1}, |
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308 #endif |
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309 #ifdef Py_TRACE_REFS |
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310 {"getobjects", _Py_GetObjects, 1}, |
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311 {"gettotalrefcount", sys_gettotalrefcount, 1}, |
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312 #endif |
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313 {"getrefcount", sys_getrefcount, 1, getrefcount_doc}, |
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314 {"getrecursionlimit", sys_getrecursionlimit, 1, |
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315 getrecursionlimit_doc}, |
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316 #ifdef USE_MALLOPT |
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317 {"mdebug", sys_mdebug, 1}, |
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318 #endif |
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319 {"setdefaultencoding", sys_setdefaultencoding, 1, |
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320 setdefaultencoding_doc}, |
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321 {"setcheckinterval", sys_setcheckinterval, 1, |
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322 setcheckinterval_doc}, |
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323 {"setprofile", sys_setprofile, 0, setprofile_doc}, |
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324 {"setrecursionlimit", sys_setrecursionlimit, 1, |
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325 setrecursionlimit_doc}, |
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326 {"settrace", sys_settrace, 0, settrace_doc}, |
| 86 | 327 {NULL, NULL} /* sentinel */ |
| 328 }; | |
| 329 | |
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331 list_builtin_module_names(void) |
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332 { |
| 5372 | 333 PyObject *list = PyList_New(0); |
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334 int i; |
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335 if (list == NULL) |
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336 return NULL; |
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337 for (i = 0; PyImport_Inittab[i].name != NULL; i++) { |
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338 PyObject *name = PyString_FromString( |
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339 PyImport_Inittab[i].name); |
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340 if (name == NULL) |
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341 break; |
| 5372 | 342 PyList_Append(list, name); |
| 343 Py_DECREF(name); | |
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344 } |
| 5372 | 345 if (PyList_Sort(list) != 0) { |
| 346 Py_DECREF(list); | |
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347 list = NULL; |
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348 } |
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349 if (list) { |
| 5372 | 350 PyObject *v = PyList_AsTuple(list); |
| 351 Py_DECREF(list); | |
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352 list = v; |
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353 } |
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354 return list; |
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355 } |
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356 |
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357 /* XXX This doc string is too long to be a single string literal in VC++ 5.0. |
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358 Two literals concatenated works just fine. If you have a K&R compiler |
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359 or other abomination that however *does* understand longer strings, |
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360 get rid of the !!! comment in the middle and the quotes that surround it. */ |
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361 static char sys_doc[] = |
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362 "This module provides access to some objects used or maintained by the\n\ |
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363 interpreter and to functions that interact strongly with the interpreter.\n\ |
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364 \n\ |
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365 Dynamic objects:\n\ |
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366 \n\ |
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367 argv -- command line arguments; argv[0] is the script pathname if known\n\ |
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368 path -- module search path; path[0] is the script directory, else ''\n\ |
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369 modules -- dictionary of loaded modules\n\ |
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370 exitfunc -- you may set this to a function to be called when Python exits\n\ |
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371 \n\ |
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372 stdin -- standard input file object; used by raw_input() and input()\n\ |
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373 stdout -- standard output file object; used by the print statement\n\ |
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374 stderr -- standard error object; used for error messages\n\ |
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375 By assigning another file object (or an object that behaves like a file)\n\ |
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376 to one of these, it is possible to redirect all of the interpreter's I/O.\n\ |
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377 \n\ |
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378 last_type -- type of last uncaught exception\n\ |
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379 last_value -- value of last uncaught exception\n\ |
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380 last_traceback -- traceback of last uncaught exception\n\ |
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381 These three are only available in an interactive session after a\n\ |
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382 traceback has been printed.\n\ |
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383 \n\ |
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384 exc_type -- type of exception currently being handled\n\ |
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385 exc_value -- value of exception currently being handled\n\ |
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386 exc_traceback -- traceback of exception currently being handled\n\ |
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387 The function exc_info() should be used instead of these three,\n\ |
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388 because it is thread-safe.\n\ |
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389 " |
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390 #ifndef MS_WIN16 |
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391 /* Concatenating string here */ |
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392 "\n\ |
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393 Static objects:\n\ |
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394 \n\ |
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395 maxint -- the largest supported integer (the smallest is -maxint-1)\n\ |
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396 builtin_module_names -- tuple of module names built into this intepreter\n\ |
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397 version -- the version of this interpreter as a string\n\ |
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398 version_info -- version information as a tuple\n\ |
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399 hexversion -- version information encoded as a single integer\n\ |
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400 copyright -- copyright notice pertaining to this interpreter\n\ |
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401 platform -- platform identifier\n\ |
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402 executable -- pathname of this Python interpreter\n\ |
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403 prefix -- prefix used to find the Python library\n\ |
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404 exec_prefix -- prefix used to find the machine-specific Python library\n\ |
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405 dllhandle -- [Windows only] integer handle of the Python DLL\n\ |
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406 winver -- [Windows only] version number of the Python DLL\n\ |
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407 __stdin__ -- the original stdin; don't use!\n\ |
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408 __stdout__ -- the original stdout; don't use!\n\ |
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409 __stderr__ -- the original stderr; don't use!\n\ |
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410 \n\ |
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411 Functions:\n\ |
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412 \n\ |
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413 exc_info() -- return thread-safe information about the current exception\n\ |
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414 exit() -- exit the interpreter by raising SystemExit\n\ |
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415 getrefcount() -- return the reference count for an object (plus one :-)\n\ |
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416 getrecursionlimit() -- return the max recursion depth for the interpreter\n\ |
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417 setcheckinterval() -- control how often the interpreter checks for events\n\ |
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418 setprofile() -- set the global profiling function\n\ |
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419 setrecursionlimit() -- set the max recursion depth for the interpreter\n\ |
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420 settrace() -- set the global debug tracing function\n\ |
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421 " |
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422 #endif |
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423 /* end of sys_doc */ ; |
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424 |
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425 PyObject * |
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426 _PySys_Init(void) |
| 6 | 427 { |
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428 PyObject *m, *v, *sysdict; |
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429 PyObject *sysin, *sysout, *syserr; |
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430 char *s; |
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431 |
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432 m = Py_InitModule3("sys", sys_methods, sys_doc); |
| 5372 | 433 sysdict = PyModule_GetDict(m); |
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434 |
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435 sysin = PyFile_FromFile(stdin, "<stdin>", "r", NULL); |
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436 sysout = PyFile_FromFile(stdout, "<stdout>", "w", NULL); |
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437 syserr = PyFile_FromFile(stderr, "<stderr>", "w", NULL); |
| 5372 | 438 if (PyErr_Occurred()) |
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439 return NULL; |
| 5372 | 440 PyDict_SetItemString(sysdict, "stdin", sysin); |
| 441 PyDict_SetItemString(sysdict, "stdout", sysout); | |
| 442 PyDict_SetItemString(sysdict, "stderr", syserr); | |
|
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443 /* Make backup copies for cleanup */ |
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444 PyDict_SetItemString(sysdict, "__stdin__", sysin); |
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445 PyDict_SetItemString(sysdict, "__stdout__", sysout); |
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446 PyDict_SetItemString(sysdict, "__stderr__", syserr); |
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447 Py_XDECREF(sysin); |
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448 Py_XDECREF(sysout); |
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449 Py_XDECREF(syserr); |
| 5372 | 450 PyDict_SetItemString(sysdict, "version", |
| 451 v = PyString_FromString(Py_GetVersion())); | |
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452 Py_XDECREF(v); |
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453 PyDict_SetItemString(sysdict, "hexversion", |
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454 v = PyInt_FromLong(PY_VERSION_HEX)); |
| 5372 | 455 Py_XDECREF(v); |
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456 /* |
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457 * These release level checks are mutually exclusive and cover |
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458 * the field, so don't get too fancy with the pre-processor! |
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459 */ |
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460 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_ALPHA |
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461 s = "alpha"; |
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462 #elif PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_BETA |
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463 s = "beta"; |
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464 #elif PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_GAMMA |
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465 s = "candidate"; |
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466 #elif PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_FINAL |
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467 s = "final"; |
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468 #endif |
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469 PyDict_SetItemString(sysdict, "version_info", |
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470 v = Py_BuildValue("iiisi", PY_MAJOR_VERSION, |
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471 PY_MINOR_VERSION, |
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472 PY_MICRO_VERSION, s, |
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473 PY_RELEASE_SERIAL)); |
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474 Py_XDECREF(v); |
| 5372 | 475 PyDict_SetItemString(sysdict, "copyright", |
| 476 v = PyString_FromString(Py_GetCopyright())); | |
| 477 Py_XDECREF(v); | |
| 478 PyDict_SetItemString(sysdict, "platform", | |
| 479 v = PyString_FromString(Py_GetPlatform())); | |
| 480 Py_XDECREF(v); | |
|
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481 PyDict_SetItemString(sysdict, "executable", |
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482 v = PyString_FromString(Py_GetProgramFullPath())); |
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483 Py_XDECREF(v); |
| 5372 | 484 PyDict_SetItemString(sysdict, "prefix", |
| 485 v = PyString_FromString(Py_GetPrefix())); | |
| 486 Py_XDECREF(v); | |
| 487 PyDict_SetItemString(sysdict, "exec_prefix", | |
| 488 v = PyString_FromString(Py_GetExecPrefix())); | |
| 489 Py_XDECREF(v); | |
| 490 PyDict_SetItemString(sysdict, "maxint", | |
| 491 v = PyInt_FromLong(PyInt_GetMax())); | |
| 492 Py_XDECREF(v); | |
| 493 PyDict_SetItemString(sysdict, "builtin_module_names", | |
|
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494 v = list_builtin_module_names()); |
| 5372 | 495 Py_XDECREF(v); |
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496 { |
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497 /* Assumes that longs are at least 2 bytes long. |
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498 Should be safe! */ |
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499 unsigned long number = 1; |
|
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500 char *value; |
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|
501 |
|
841cf9012ac3
Add a byte_order value to the sys module. The value is "big" for
Fred Drake <fdrake@acm.org>
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|
502 s = (char *) &number; |
|
841cf9012ac3
Add a byte_order value to the sys module. The value is "big" for
Fred Drake <fdrake@acm.org>
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diff
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|
503 if (s[0] == 0) |
|
13977
eb9a36163a9e
Guido pointed out that all names in the sys module have no underscore,
Fred Drake <fdrake@acm.org>
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|
504 value = "big"; |
|
13968
841cf9012ac3
Add a byte_order value to the sys module. The value is "big" for
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|
505 else |
|
13977
eb9a36163a9e
Guido pointed out that all names in the sys module have no underscore,
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|
506 value = "little"; |
|
eb9a36163a9e
Guido pointed out that all names in the sys module have no underscore,
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|
507 PyDict_SetItemString(sysdict, "byteorder", |
|
14017
128f641191c3
_PySys_Init(): Fix another Insure discovered memory leak; the PyString
Barry Warsaw <barry@python.org>
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|
508 v = PyString_FromString(value)); |
|
128f641191c3
_PySys_Init(): Fix another Insure discovered memory leak; the PyString
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|
509 Py_XDECREF(v); |
|
13968
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Add a byte_order value to the sys module. The value is "big" for
Fred Drake <fdrake@acm.org>
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|
510 } |
|
4126
c80c515999b9
Use MS_DLL_ID as sys.winver
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diff
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|
511 #ifdef MS_COREDLL |
| 5372 | 512 PyDict_SetItemString(sysdict, "dllhandle", |
|
13096
8c8de5b736dc
Trent Mick's Win64 changes: size_t vs. int or long; also some overflow
Guido van Rossum <guido@python.org>
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12965
diff
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|
513 v = PyLong_FromVoidPtr(PyWin_DLLhModule)); |
| 5372 | 514 Py_XDECREF(v); |
| 515 PyDict_SetItemString(sysdict, "winver", | |
|
6352
b62a7a59414e
Get DLL version from a variable.
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diff
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|
516 v = PyString_FromString(PyWin_DLLVersionString)); |
| 5372 | 517 Py_XDECREF(v); |
|
3490
1dfc519ea3cb
Under NT, define sys.dllhandle and sys.winver (Mark H.).
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|
518 #endif |
| 5372 | 519 if (PyErr_Occurred()) |
|
5926
8d2194e22e67
The last of the mass checkins for separate (sub)interpreters.
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|
520 return NULL; |
|
8d2194e22e67
The last of the mass checkins for separate (sub)interpreters.
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diff
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|
521 return m; |
| 86 | 522 } |
| 523 | |
| 5372 | 524 static PyObject * |
|
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Mass ANSIfication of function definitions. Doesn't cover all 'extern'
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|
525 makepathobject(char *path, int delim) |
| 86 | 526 { |
| 527 int i, n; | |
| 528 char *p; | |
| 5372 | 529 PyObject *v, *w; |
| 6 | 530 |
| 86 | 531 n = 1; |
| 532 p = path; | |
| 533 while ((p = strchr(p, delim)) != NULL) { | |
| 534 n++; | |
| 535 p++; | |
| 536 } | |
| 5372 | 537 v = PyList_New(n); |
| 86 | 538 if (v == NULL) |
| 539 return NULL; | |
| 540 for (i = 0; ; i++) { | |
| 541 p = strchr(path, delim); | |
| 542 if (p == NULL) | |
| 543 p = strchr(path, '\0'); /* End of string */ | |
| 5372 | 544 w = PyString_FromStringAndSize(path, (int) (p - path)); |
| 86 | 545 if (w == NULL) { |
| 5372 | 546 Py_DECREF(v); |
| 86 | 547 return NULL; |
| 548 } | |
| 5372 | 549 PyList_SetItem(v, i, w); |
| 86 | 550 if (*p == '\0') |
| 551 break; | |
| 552 path = p+1; | |
| 553 } | |
| 554 return v; | |
| 555 } | |
| 556 | |
| 557 void | |
|
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f79434ee41fa
Mass ANSIfication of function definitions. Doesn't cover all 'extern'
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|
558 PySys_SetPath(char *path) |
| 86 | 559 { |
| 5372 | 560 PyObject *v; |
| 86 | 561 if ((v = makepathobject(path, DELIM)) == NULL) |
| 5372 | 562 Py_FatalError("can't create sys.path"); |
| 563 if (PySys_SetObject("path", v) != 0) | |
| 564 Py_FatalError("can't assign sys.path"); | |
| 565 Py_DECREF(v); | |
|
83
f6bcf3c1d714
Empty all modules' symbol tables, so most circular references are
Guido van Rossum <guido@python.org>
parents:
6
diff
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|
566 } |
|
f6bcf3c1d714
Empty all modules' symbol tables, so most circular references are
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parents:
6
diff
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|
567 |
| 5372 | 568 static PyObject * |
|
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Mass ANSIfication of function definitions. Doesn't cover all 'extern'
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diff
changeset
|
569 makeargvobject(int argc, char **argv) |
|
83
f6bcf3c1d714
Empty all modules' symbol tables, so most circular references are
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parents:
6
diff
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|
570 { |
| 5372 | 571 PyObject *av; |
|
596
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
Guido van Rossum <guido@python.org>
parents:
549
diff
changeset
|
572 if (argc <= 0 || argv == NULL) { |
|
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
Guido van Rossum <guido@python.org>
parents:
549
diff
changeset
|
573 /* Ensure at least one (empty) argument is seen */ |
|
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
Guido van Rossum <guido@python.org>
parents:
549
diff
changeset
|
574 static char *empty_argv[1] = {""}; |
|
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
Guido van Rossum <guido@python.org>
parents:
549
diff
changeset
|
575 argv = empty_argv; |
|
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
Guido van Rossum <guido@python.org>
parents:
549
diff
changeset
|
576 argc = 1; |
|
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
Guido van Rossum <guido@python.org>
parents:
549
diff
changeset
|
577 } |
| 5372 | 578 av = PyList_New(argc); |
| 86 | 579 if (av != NULL) { |
| 580 int i; | |
| 581 for (i = 0; i < argc; i++) { | |
| 5372 | 582 PyObject *v = PyString_FromString(argv[i]); |
| 86 | 583 if (v == NULL) { |
| 5372 | 584 Py_DECREF(av); |
| 86 | 585 av = NULL; |
| 586 break; | |
| 587 } | |
| 5372 | 588 PyList_SetItem(av, i, v); |
|
83
f6bcf3c1d714
Empty all modules' symbol tables, so most circular references are
Guido van Rossum <guido@python.org>
parents:
6
diff
changeset
|
589 } |
|
f6bcf3c1d714
Empty all modules' symbol tables, so most circular references are
Guido van Rossum <guido@python.org>
parents:
6
diff
changeset
|
590 } |
| 86 | 591 return av; |
| 6 | 592 } |
| 593 | |
| 594 void | |
|
13658
f79434ee41fa
Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
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diff
changeset
|
595 PySys_SetArgv(int argc, char **argv) |
| 6 | 596 { |
| 5372 | 597 PyObject *av = makeargvobject(argc, argv); |
| 598 PyObject *path = PySys_GetObject("path"); | |
| 86 | 599 if (av == NULL) |
| 5372 | 600 Py_FatalError("no mem for sys.argv"); |
| 601 if (PySys_SetObject("argv", av) != 0) | |
| 602 Py_FatalError("can't assign sys.argv"); | |
|
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408e374934e5
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parents:
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diff
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|
603 if (path != NULL) { |
|
5340
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
604 char *argv0 = argv[0]; |
|
3877
408e374934e5
Always insert script directory in front of sys.path -- if there's no
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
605 char *p = NULL; |
|
4256
e225e70fd657
Changes to setpythonpath():
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parents:
4126
diff
changeset
|
606 int n = 0; |
| 5372 | 607 PyObject *a; |
|
5340
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Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
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changeset
|
608 #ifdef HAVE_READLINK |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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diff
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|
609 char link[MAXPATHLEN+1]; |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
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diff
changeset
|
610 char argv0copy[2*MAXPATHLEN+1]; |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
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|
611 int nr = 0; |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
5047
diff
changeset
|
612 if (argc > 0 && argv0 != NULL) |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
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diff
changeset
|
613 nr = readlink(argv0, link, MAXPATHLEN); |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
614 if (nr > 0) { |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
5047
diff
changeset
|
615 /* It's a symlink */ |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
5047
diff
changeset
|
616 link[nr] = '\0'; |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
5047
diff
changeset
|
617 if (link[0] == SEP) |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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|
618 argv0 = link; /* Link to absolute path */ |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
5047
diff
changeset
|
619 else if (strchr(link, SEP) == NULL) |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
620 ; /* Link without path */ |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
621 else { |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
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|
622 /* Must join(dirname(argv0), link) */ |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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diff
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|
623 char *q = strrchr(argv0, SEP); |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
5047
diff
changeset
|
624 if (q == NULL) |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
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|
625 argv0 = link; /* argv0 without path */ |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
626 else { |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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5047
diff
changeset
|
627 /* Must make a copy */ |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
5047
diff
changeset
|
628 strcpy(argv0copy, argv0); |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
5047
diff
changeset
|
629 q = strrchr(argv0copy, SEP); |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
5047
diff
changeset
|
630 strcpy(q+1, link); |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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5047
diff
changeset
|
631 argv0 = argv0copy; |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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diff
changeset
|
632 } |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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diff
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|
633 } |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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diff
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|
634 } |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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diff
changeset
|
635 #endif /* HAVE_READLINK */ |
|
4256
e225e70fd657
Changes to setpythonpath():
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|
636 #if SEP == '\\' /* Special case for MS filename syntax */ |
|
5340
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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changeset
|
637 if (argc > 0 && argv0 != NULL) { |
|
4256
e225e70fd657
Changes to setpythonpath():
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|
638 char *q; |
|
5340
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
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parents:
5047
diff
changeset
|
639 p = strrchr(argv0, SEP); |
|
4256
e225e70fd657
Changes to setpythonpath():
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|
640 /* Test for alternate separator */ |
|
5340
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
5047
diff
changeset
|
641 q = strrchr(p ? p : argv0, '/'); |
|
4256
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
642 if (q != NULL) |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
parents:
4126
diff
changeset
|
643 p = q; |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
parents:
4126
diff
changeset
|
644 if (p != NULL) { |
|
5340
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
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|
645 n = p + 1 - argv0; |
|
4256
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
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diff
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|
646 if (n > 1 && p[-1] != ':') |
|
e225e70fd657
Changes to setpythonpath():
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diff
changeset
|
647 n--; /* Drop trailing separator */ |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
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|
648 } |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
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|
649 } |
|
e225e70fd657
Changes to setpythonpath():
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|
650 #else /* All other filename syntaxes */ |
|
5340
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Expand one level of symbolic link in sys.argv[0] before inserting its
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|
651 if (argc > 0 && argv0 != NULL) |
|
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
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5047
diff
changeset
|
652 p = strrchr(argv0, SEP); |
|
4256
e225e70fd657
Changes to setpythonpath():
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4126
diff
changeset
|
653 if (p != NULL) { |
|
5340
db673e98f28d
Expand one level of symbolic link in sys.argv[0] before inserting its
Guido van Rossum <guido@python.org>
parents:
5047
diff
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|
654 n = p + 1 - argv0; |
|
4256
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
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|
655 #if SEP == '/' /* Special case for Unix filename syntax */ |
|
e225e70fd657
Changes to setpythonpath():
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parents:
4126
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|
656 if (n > 1) |
|
e225e70fd657
Changes to setpythonpath():
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4126
diff
changeset
|
657 n--; /* Drop trailing separator */ |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
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4126
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changeset
|
658 #endif /* Unix */ |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
parents:
4126
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|
659 } |
|
e225e70fd657
Changes to setpythonpath():
Guido van Rossum <guido@python.org>
parents:
4126
diff
changeset
|
660 #endif /* All others */ |
| 5372 | 661 a = PyString_FromStringAndSize(argv0, n); |
|
3877
408e374934e5
Always insert script directory in front of sys.path -- if there's no
Guido van Rossum <guido@python.org>
parents:
3806
diff
changeset
|
662 if (a == NULL) |
| 5372 | 663 Py_FatalError("no mem for sys.path insertion"); |
| 664 if (PyList_Insert(path, 0, a) < 0) | |
| 665 Py_FatalError("sys.path.insert(0) failed"); | |
| 666 Py_DECREF(a); | |
|
3806
93868c7a15c9
As a side effect of calling PySys_SetArgv (setpythonargv), the
Guido van Rossum <guido@python.org>
parents:
3738
diff
changeset
|
667 } |
| 5372 | 668 Py_DECREF(av); |
| 6 | 669 } |
|
8314
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
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|
670 |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
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|
671 |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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|
672 /* APIs to write to sys.stdout or sys.stderr using a printf-like interface. |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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7402
diff
changeset
|
673 Adapted from code submitted by Just van Rossum. |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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|
674 |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
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|
675 PySys_WriteStdout(format, ...) |
|
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676 PySys_WriteStderr(format, ...) |
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677 |
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678 The first function writes to sys.stdout; the second to sys.stderr. When |
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679 there is a problem, they write to the real (C level) stdout or stderr; |
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680 no exceptions are raised. |
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681 |
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682 Both take a printf-style format string as their first argument followed |
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683 by a variable length argument list determined by the format string. |
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684 |
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685 *** WARNING *** |
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686 |
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687 The format should limit the total size of the formatted output string to |
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688 1000 bytes. In particular, this means that no unrestricted "%s" formats |
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689 should occur; these should be limited using "%.<N>s where <N> is a |
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690 decimal number calculated so that <N> plus the maximum size of other |
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691 formatted text does not exceed 1000 bytes. Also watch out for "%f", |
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692 which can print hundreds of digits for very large numbers. |
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693 |
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694 */ |
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695 |
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696 static void |
|
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Thomas Wouters <thomas@python.org>
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697 mywrite(char *name, FILE *fp, const char *format, va_list va) |
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698 { |
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699 PyObject *file; |
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700 PyObject *error_type, *error_value, *error_traceback; |
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701 |
|
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702 PyErr_Fetch(&error_type, &error_value, &error_traceback); |
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703 file = PySys_GetObject(name); |
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704 if (file == NULL || PyFile_AsFile(file) == fp) |
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705 vfprintf(fp, format, va); |
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706 else { |
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707 char buffer[1001]; |
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708 if (vsprintf(buffer, format, va) >= sizeof(buffer)) |
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709 Py_FatalError("PySys_WriteStdout/err: buffer overrun"); |
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710 if (PyFile_WriteString(buffer, file) != 0) { |
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711 PyErr_Clear(); |
|
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712 fputs(buffer, fp); |
|
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713 } |
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714 } |
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715 PyErr_Restore(error_type, error_value, error_traceback); |
|
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716 } |
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717 |
|
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718 void |
|
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719 PySys_WriteStdout(const char *format, ...) |
|
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720 { |
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721 va_list va; |
|
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|
722 |
|
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723 va_start(va, format); |
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724 mywrite("stdout", stdout, format, va); |
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725 va_end(va); |
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726 } |
|
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727 |
|
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728 void |
|
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729 PySys_WriteStderr(const char *format, ...) |
|
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730 { |
|
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731 va_list va; |
|
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|
732 |
|
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733 va_start(va, format); |
|
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734 mywrite("stderr", stderr, format, va); |
|
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735 va_end(va); |
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736 } |