Mercurial > cpython-lru_cache-weakref
annotate Python/sysmodule.c @ 13256:87ee82e5c56d legacy-trunk
Change copyright notice - 2nd try.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 30 Jun 2000 23:58:06 +0000 |
| parents | 916fb024ce94 |
| children | a89f7f268de4 |
| rev | line source |
|---|---|
| 145 | 1 /*********************************************************** |
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2 Copyright (c) 2000, BeOpen.com. |
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3 Copyright (c) 1995-2000, Corporation for National Research Initiatives. |
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4 Copyright (c) 1990-1995, Stichting Mathematisch Centrum. |
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5 All rights reserved. |
| 145 | 6 |
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7 See the file "Misc/COPYRIGHT" for information on usage and |
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8 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 145 | 9 ******************************************************************/ |
| 10 | |
| 6 | 11 /* System module */ |
| 12 | |
| 13 /* | |
| 14 Various bits of information used by the interpreter are collected in | |
| 15 module 'sys'. | |
| 86 | 16 Function member: |
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17 - exit(sts): raise SystemExit |
| 6 | 18 Data members: |
| 19 - stdin, stdout, stderr: standard file objects | |
| 86 | 20 - modules: the table of modules (dictionary) |
| 6 | 21 - path: module search path (list of strings) |
| 86 | 22 - argv: script arguments (list of strings) |
| 23 - ps1, ps2: optional primary and secondary prompts (strings) | |
| 6 | 24 */ |
| 25 | |
| 5372 | 26 #include "Python.h" |
| 86 | 27 |
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28 #include "osdefs.h" |
| 86 | 29 |
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30 #ifdef HAVE_UNISTD_H |
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31 #include <unistd.h> |
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32 #endif |
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33 |
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34 #ifdef MS_COREDLL |
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35 extern void *PyWin_DLLhModule; |
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36 /* A string loaded from the DLL at startup: */ |
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37 extern const char *PyWin_DLLVersionString; |
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38 #endif |
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39 |
| 5372 | 40 PyObject * |
| 41 PySys_GetObject(name) | |
| 6 | 42 char *name; |
| 43 { | |
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44 PyThreadState *tstate = PyThreadState_Get(); |
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45 PyObject *sd = tstate->interp->sysdict; |
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46 if (sd == NULL) |
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47 return NULL; |
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48 return PyDict_GetItemString(sd, name); |
| 6 | 49 } |
| 50 | |
| 51 FILE * | |
| 5372 | 52 PySys_GetFile(name, def) |
| 6 | 53 char *name; |
| 54 FILE *def; | |
| 55 { | |
| 56 FILE *fp = NULL; | |
| 5372 | 57 PyObject *v = PySys_GetObject(name); |
| 58 if (v != NULL && PyFile_Check(v)) | |
| 59 fp = PyFile_AsFile(v); | |
| 6 | 60 if (fp == NULL) |
| 61 fp = def; | |
| 62 return fp; | |
| 63 } | |
| 64 | |
| 65 int | |
| 5372 | 66 PySys_SetObject(name, v) |
| 6 | 67 char *name; |
| 5372 | 68 PyObject *v; |
| 6 | 69 { |
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70 PyThreadState *tstate = PyThreadState_Get(); |
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71 PyObject *sd = tstate->interp->sysdict; |
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72 if (v == NULL) { |
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73 if (PyDict_GetItemString(sd, name) == NULL) |
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74 return 0; |
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75 else |
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76 return PyDict_DelItemString(sd, name); |
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77 } |
| 6 | 78 else |
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79 return PyDict_SetItemString(sd, name, v); |
| 6 | 80 } |
| 81 | |
| 5372 | 82 static PyObject * |
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83 sys_exc_info(self, args) |
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84 PyObject *self; |
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85 PyObject *args; |
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86 { |
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87 PyThreadState *tstate; |
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88 if (!PyArg_ParseTuple(args, ":exc_info")) |
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89 return NULL; |
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90 tstate = PyThreadState_Get(); |
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91 return Py_BuildValue( |
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92 "(OOO)", |
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93 tstate->exc_type != NULL ? tstate->exc_type : Py_None, |
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94 tstate->exc_value != NULL ? tstate->exc_value : Py_None, |
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95 tstate->exc_traceback != NULL ? |
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96 tstate->exc_traceback : Py_None); |
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97 } |
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98 |
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99 static char exc_info_doc[] = |
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100 "exc_info() -> (type, value, traceback)\n\ |
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101 \n\ |
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102 Return information about the exception that is currently being handled.\n\ |
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103 This should be called from inside an except clause only."; |
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104 |
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105 static PyObject * |
| 6 | 106 sys_exit(self, args) |
| 5372 | 107 PyObject *self; |
| 108 PyObject *args; | |
| 6 | 109 { |
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110 /* Raise SystemExit so callers may catch it or clean up. */ |
| 5372 | 111 PyErr_SetObject(PyExc_SystemExit, args); |
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112 return NULL; |
| 6 | 113 } |
| 114 | |
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115 static char exit_doc[] = |
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116 "exit([status])\n\ |
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117 \n\ |
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118 Exit the interpreter by raising SystemExit(status).\n\ |
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119 If the status is omitted or None, it defaults to zero (i.e., success).\n\ |
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120 If the status numeric, it will be used as the system exit status.\n\ |
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121 If it is another kind of object, it will be printed and the system\n\ |
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122 exit status will be one (i.e., failure)."; |
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123 |
| 5372 | 124 static PyObject * |
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125 sys_getdefaultencoding(self, args) |
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126 PyObject *self; |
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127 PyObject *args; |
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128 { |
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129 if (!PyArg_ParseTuple(args, ":getdefaultencoding")) |
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130 return NULL; |
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131 return PyString_FromString(PyUnicode_GetDefaultEncoding()); |
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132 } |
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133 |
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134 static char getdefaultencoding_doc[] = |
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135 "getdefaultencoding() -> string\n\ |
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136 \n\ |
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137 Return the current default string encoding used by the Unicode \n\ |
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138 implementation."; |
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139 |
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140 static PyObject * |
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141 sys_setdefaultencoding(self, args) |
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142 PyObject *self; |
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143 PyObject *args; |
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144 { |
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145 char *encoding; |
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146 if (!PyArg_ParseTuple(args, "s:setdefaultencoding", &encoding)) |
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147 return NULL; |
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148 if (PyUnicode_SetDefaultEncoding(encoding)) |
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149 return NULL; |
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150 Py_INCREF(Py_None); |
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151 return Py_None; |
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152 } |
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153 |
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154 static char setdefaultencoding_doc[] = |
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155 "setdefaultencoding(encoding)\n\ |
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156 \n\ |
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157 Set the current default string encoding used by the Unicode implementation."; |
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158 |
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159 static PyObject * |
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160 sys_settrace(self, args) |
| 5372 | 161 PyObject *self; |
| 162 PyObject *args; | |
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163 { |
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164 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 165 if (args == Py_None) |
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166 args = NULL; |
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167 else |
| 5372 | 168 Py_XINCREF(args); |
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169 Py_XDECREF(tstate->sys_tracefunc); |
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170 tstate->sys_tracefunc = args; |
| 5372 | 171 Py_INCREF(Py_None); |
| 172 return Py_None; | |
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173 } |
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174 |
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175 static char settrace_doc[] = |
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176 "settrace(function)\n\ |
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177 \n\ |
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178 Set the global debug tracing function. It will be called on each\n\ |
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179 function call. See the debugger chapter in the library manual."; |
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180 |
| 5372 | 181 static PyObject * |
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182 sys_setprofile(self, args) |
| 5372 | 183 PyObject *self; |
| 184 PyObject *args; | |
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185 { |
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186 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 187 if (args == Py_None) |
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188 args = NULL; |
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189 else |
| 5372 | 190 Py_XINCREF(args); |
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191 Py_XDECREF(tstate->sys_profilefunc); |
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192 tstate->sys_profilefunc = args; |
| 5372 | 193 Py_INCREF(Py_None); |
| 194 return Py_None; | |
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195 } |
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196 |
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197 static char setprofile_doc[] = |
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198 "setprofile(function)\n\ |
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199 \n\ |
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200 Set the profiling function. It will be called on each function call\n\ |
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201 and return. See the profiler chapter in the library manual."; |
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202 |
| 5372 | 203 static PyObject * |
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204 sys_setcheckinterval(self, args) |
| 5372 | 205 PyObject *self; |
| 206 PyObject *args; | |
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207 { |
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208 PyThreadState *tstate = PyThreadState_Get(); |
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209 if (!PyArg_ParseTuple(args, "i:setcheckinterval", &tstate->interp->checkinterval)) |
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210 return NULL; |
| 5372 | 211 Py_INCREF(Py_None); |
| 212 return Py_None; | |
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213 } |
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214 |
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215 static char setcheckinterval_doc[] = |
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216 "setcheckinterval(n)\n\ |
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217 \n\ |
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218 Tell the Python interpreter to check for asynchronous events every\n\ |
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219 n instructions. This also affects how often thread switches occur."; |
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220 |
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221 #ifdef USE_MALLOPT |
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222 /* Link with -lmalloc (or -lmpc) on an SGI */ |
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223 #include <malloc.h> |
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224 |
| 5372 | 225 static PyObject * |
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226 sys_mdebug(self, args) |
| 5372 | 227 PyObject *self; |
| 228 PyObject *args; | |
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229 { |
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230 int flag; |
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231 if (!PyArg_ParseTuple(args, "i:mdebug", &flag)) |
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232 return NULL; |
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233 mallopt(M_DEBUG, flag); |
| 5372 | 234 Py_INCREF(Py_None); |
| 235 return Py_None; | |
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236 } |
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237 #endif /* USE_MALLOPT */ |
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238 |
| 5372 | 239 static PyObject * |
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240 sys_getrefcount(self, args) |
| 5372 | 241 PyObject *self; |
| 242 PyObject *args; | |
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243 { |
| 5372 | 244 PyObject *arg; |
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245 if (!PyArg_ParseTuple(args, "O:getrefcount", &arg)) |
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246 return NULL; |
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247 return PyInt_FromLong(arg->ob_refcnt); |
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248 } |
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249 |
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250 #ifdef Py_TRACE_REFS |
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251 static PyObject * |
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252 sys_gettotalrefcount(PyObject *self, PyObject *args) |
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253 { |
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254 extern long _Py_RefTotal; |
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255 if (!PyArg_ParseTuple(args, ":gettotalrefcount")) |
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256 return NULL; |
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257 return PyInt_FromLong(_Py_RefTotal); |
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258 } |
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259 |
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260 #endif /* Py_TRACE_REFS */ |
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261 |
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262 static char getrefcount_doc[] = |
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263 "getrefcount(object) -> integer\n\ |
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264 \n\ |
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265 Return the current reference count for the object. This includes the\n\ |
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266 temporary reference in the argument list, so it is at least 2."; |
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267 |
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268 #ifdef COUNT_ALLOCS |
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269 static PyObject * |
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270 sys_getcounts(self, args) |
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271 PyObject *self, *args; |
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272 { |
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273 extern PyObject *get_counts Py_PROTO((void)); |
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274 |
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275 if (!PyArg_ParseTuple(args, ":getcounts")) |
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276 return NULL; |
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277 return get_counts(); |
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278 } |
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279 #endif |
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280 |
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281 #ifdef Py_TRACE_REFS |
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282 /* Defined in objects.c because it uses static globals if that file */ |
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283 extern PyObject *_Py_GetObjects Py_PROTO((PyObject *, PyObject *)); |
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284 #endif |
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285 |
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286 #ifdef DYNAMIC_EXECUTION_PROFILE |
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287 /* Defined in ceval.c because it uses static globals if that file */ |
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288 extern PyObject *_Py_GetDXProfile Py_PROTO((PyObject *, PyObject *)); |
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289 #endif |
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290 |
| 5372 | 291 static PyMethodDef sys_methods[] = { |
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292 /* Might as well keep this in alphabetic order */ |
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293 {"exc_info", sys_exc_info, 1, exc_info_doc}, |
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294 {"exit", sys_exit, 0, exit_doc}, |
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295 {"getdefaultencoding", sys_getdefaultencoding, 1, getdefaultencoding_doc}, |
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296 #ifdef COUNT_ALLOCS |
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297 {"getcounts", sys_getcounts, 1}, |
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298 #endif |
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299 #ifdef DYNAMIC_EXECUTION_PROFILE |
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300 {"getdxp", _Py_GetDXProfile, 1}, |
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301 #endif |
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302 #ifdef Py_TRACE_REFS |
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303 {"getobjects", _Py_GetObjects, 1}, |
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304 {"gettotalrefcount", sys_gettotalrefcount, 1}, |
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305 #endif |
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306 {"getrefcount", sys_getrefcount, 1, getrefcount_doc}, |
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307 #ifdef USE_MALLOPT |
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308 {"mdebug", sys_mdebug, 1}, |
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309 #endif |
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310 {"setdefaultencoding", sys_setdefaultencoding, 1, setdefaultencoding_doc}, |
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311 {"setcheckinterval", sys_setcheckinterval, 1, setcheckinterval_doc}, |
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312 {"setprofile", sys_setprofile, 0, setprofile_doc}, |
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313 {"settrace", sys_settrace, 0, settrace_doc}, |
| 86 | 314 {NULL, NULL} /* sentinel */ |
| 315 }; | |
| 316 | |
| 5372 | 317 static PyObject * |
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318 list_builtin_module_names() |
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319 { |
| 5372 | 320 PyObject *list = PyList_New(0); |
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321 int i; |
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322 if (list == NULL) |
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323 return NULL; |
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324 for (i = 0; PyImport_Inittab[i].name != NULL; i++) { |
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325 PyObject *name = PyString_FromString( |
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326 PyImport_Inittab[i].name); |
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327 if (name == NULL) |
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328 break; |
| 5372 | 329 PyList_Append(list, name); |
| 330 Py_DECREF(name); | |
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331 } |
| 5372 | 332 if (PyList_Sort(list) != 0) { |
| 333 Py_DECREF(list); | |
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334 list = NULL; |
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335 } |
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336 if (list) { |
| 5372 | 337 PyObject *v = PyList_AsTuple(list); |
| 338 Py_DECREF(list); | |
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339 list = v; |
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340 } |
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341 return list; |
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342 } |
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343 |
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344 /* XXX This doc string is too long to be a single string literal in VC++ 5.0. |
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345 Two literals concatenated works just fine. If you have a K&R compiler |
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346 or other abomination that however *does* understand longer strings, |
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347 get rid of the !!! comment in the middle and the quotes that surround it. */ |
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348 static char sys_doc[] = |
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349 "This module provides access to some objects used or maintained by the\n\ |
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350 interpreter and to functions that interact strongly with the interpreter.\n\ |
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351 \n\ |
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352 Dynamic objects:\n\ |
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353 \n\ |
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354 argv -- command line arguments; argv[0] is the script pathname if known\n\ |
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355 path -- module search path; path[0] is the script directory, else ''\n\ |
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356 modules -- dictionary of loaded modules\n\ |
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357 exitfunc -- you may set this to a function to be called when Python exits\n\ |
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358 \n\ |
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359 stdin -- standard input file object; used by raw_input() and input()\n\ |
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360 stdout -- standard output file object; used by the print statement\n\ |
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361 stderr -- standard error object; used for error messages\n\ |
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362 By assigning another file object (or an object that behaves like a file)\n\ |
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363 to one of these, it is possible to redirect all of the interpreter's I/O.\n\ |
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364 \n\ |
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365 last_type -- type of last uncaught exception\n\ |
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366 last_value -- value of last uncaught exception\n\ |
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367 last_traceback -- traceback of last uncaught exception\n\ |
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368 These three are only available in an interactive session after a\n\ |
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369 traceback has been printed.\n\ |
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370 \n\ |
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371 exc_type -- type of exception currently being handled\n\ |
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372 exc_value -- value of exception currently being handled\n\ |
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373 exc_traceback -- traceback of exception currently being handled\n\ |
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374 The function exc_info() should be used instead of these three,\n\ |
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375 because it is thread-safe.\n\ |
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376 " |
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377 #ifndef MS_WIN16 |
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378 /* Concatenating string here */ |
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379 "\n\ |
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380 Static objects:\n\ |
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381 \n\ |
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382 maxint -- the largest supported integer (the smallest is -maxint-1)\n\ |
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383 builtin_module_names -- tuple of module names built into this intepreter\n\ |
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384 version -- the version of this interpreter as a string\n\ |
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385 version_info -- version information as a tuple\n\ |
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386 hexversion -- version information encoded as a single integer\n\ |
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387 copyright -- copyright notice pertaining to this interpreter\n\ |
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388 platform -- platform identifier\n\ |
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389 executable -- pathname of this Python interpreter\n\ |
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390 prefix -- prefix used to find the Python library\n\ |
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391 exec_prefix -- prefix used to find the machine-specific Python library\n\ |
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392 dllhandle -- [Windows only] integer handle of the Python DLL\n\ |
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393 winver -- [Windows only] version number of the Python DLL\n\ |
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394 __stdin__ -- the original stdin; don't use!\n\ |
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395 __stdout__ -- the original stdout; don't use!\n\ |
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396 __stderr__ -- the original stderr; don't use!\n\ |
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397 \n\ |
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398 Functions:\n\ |
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399 \n\ |
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400 exc_info() -- return thread-safe information about the current exception\n\ |
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401 exit() -- exit the interpreter by raising SystemExit\n\ |
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402 getrefcount() -- return the reference count for an object (plus one :-)\n\ |
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403 setcheckinterval() -- control how often the interpreter checks for events\n\ |
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404 setprofile() -- set the global profiling function\n\ |
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405 settrace() -- set the global debug tracing function\n\ |
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406 "; |
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Jim Ahlstrom patch: the module doc string is too long for 16-bit VC
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407 #endif |
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408 |
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409 PyObject * |
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410 _PySys_Init() |
| 6 | 411 { |
| 5372 | 412 extern int fclose Py_PROTO((FILE *)); |
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413 PyObject *m, *v, *sysdict; |
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414 PyObject *sysin, *sysout, *syserr; |
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415 char *s; |
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416 |
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417 m = Py_InitModule3("sys", sys_methods, sys_doc); |
| 5372 | 418 sysdict = PyModule_GetDict(m); |
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419 |
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420 sysin = PyFile_FromFile(stdin, "<stdin>", "r", NULL); |
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421 sysout = PyFile_FromFile(stdout, "<stdout>", "w", NULL); |
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422 syserr = PyFile_FromFile(stderr, "<stderr>", "w", NULL); |
| 5372 | 423 if (PyErr_Occurred()) |
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424 return NULL; |
| 5372 | 425 PyDict_SetItemString(sysdict, "stdin", sysin); |
| 426 PyDict_SetItemString(sysdict, "stdout", sysout); | |
| 427 PyDict_SetItemString(sysdict, "stderr", syserr); | |
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428 /* Make backup copies for cleanup */ |
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429 PyDict_SetItemString(sysdict, "__stdin__", sysin); |
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430 PyDict_SetItemString(sysdict, "__stdout__", sysout); |
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431 PyDict_SetItemString(sysdict, "__stderr__", syserr); |
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432 Py_XDECREF(sysin); |
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433 Py_XDECREF(sysout); |
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434 Py_XDECREF(syserr); |
| 5372 | 435 PyDict_SetItemString(sysdict, "version", |
| 436 v = PyString_FromString(Py_GetVersion())); | |
|
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437 Py_XDECREF(v); |
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438 PyDict_SetItemString(sysdict, "hexversion", |
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439 v = PyInt_FromLong(PY_VERSION_HEX)); |
| 5372 | 440 Py_XDECREF(v); |
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441 /* |
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442 * These release level checks are mutually exclusive and cover |
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443 * the field, so don't get too fancy with the pre-processor! |
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444 */ |
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445 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_ALPHA |
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446 s = "alpha"; |
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447 #endif |
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448 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_BETA |
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449 s = "beta"; |
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450 #endif |
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451 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_GAMMA |
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452 s = "candidate"; |
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453 #endif |
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454 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_FINAL |
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455 s = "final"; |
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456 #endif |
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457 PyDict_SetItemString(sysdict, "version_info", |
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458 v = Py_BuildValue("iiisi", PY_MAJOR_VERSION, |
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459 PY_MINOR_VERSION, |
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460 PY_MICRO_VERSION, s, |
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461 PY_RELEASE_SERIAL)); |
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462 Py_XDECREF(v); |
| 5372 | 463 PyDict_SetItemString(sysdict, "copyright", |
| 464 v = PyString_FromString(Py_GetCopyright())); | |
| 465 Py_XDECREF(v); | |
| 466 PyDict_SetItemString(sysdict, "platform", | |
| 467 v = PyString_FromString(Py_GetPlatform())); | |
| 468 Py_XDECREF(v); | |
|
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Set sys.executable to full path of python (from argv[0]).
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469 PyDict_SetItemString(sysdict, "executable", |
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470 v = PyString_FromString(Py_GetProgramFullPath())); |
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471 Py_XDECREF(v); |
| 5372 | 472 PyDict_SetItemString(sysdict, "prefix", |
| 473 v = PyString_FromString(Py_GetPrefix())); | |
| 474 Py_XDECREF(v); | |
| 475 PyDict_SetItemString(sysdict, "exec_prefix", | |
| 476 v = PyString_FromString(Py_GetExecPrefix())); | |
| 477 Py_XDECREF(v); | |
| 478 PyDict_SetItemString(sysdict, "maxint", | |
| 479 v = PyInt_FromLong(PyInt_GetMax())); | |
| 480 Py_XDECREF(v); | |
| 481 PyDict_SetItemString(sysdict, "builtin_module_names", | |
|
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482 v = list_builtin_module_names()); |
| 5372 | 483 Py_XDECREF(v); |
|
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484 #ifdef MS_COREDLL |
| 5372 | 485 PyDict_SetItemString(sysdict, "dllhandle", |
|
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486 v = PyLong_FromVoidPtr(PyWin_DLLhModule)); |
| 5372 | 487 Py_XDECREF(v); |
| 488 PyDict_SetItemString(sysdict, "winver", | |
|
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Get DLL version from a variable.
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489 v = PyString_FromString(PyWin_DLLVersionString)); |
| 5372 | 490 Py_XDECREF(v); |
|
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Under NT, define sys.dllhandle and sys.winver (Mark H.).
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491 #endif |
| 5372 | 492 if (PyErr_Occurred()) |
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493 return NULL; |
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494 return m; |
| 86 | 495 } |
| 496 | |
| 5372 | 497 static PyObject * |
| 86 | 498 makepathobject(path, delim) |
| 499 char *path; | |
| 500 int delim; | |
| 501 { | |
| 502 int i, n; | |
| 503 char *p; | |
| 5372 | 504 PyObject *v, *w; |
| 6 | 505 |
| 86 | 506 n = 1; |
| 507 p = path; | |
| 508 while ((p = strchr(p, delim)) != NULL) { | |
| 509 n++; | |
| 510 p++; | |
| 511 } | |
| 5372 | 512 v = PyList_New(n); |
| 86 | 513 if (v == NULL) |
| 514 return NULL; | |
| 515 for (i = 0; ; i++) { | |
| 516 p = strchr(path, delim); | |
| 517 if (p == NULL) | |
| 518 p = strchr(path, '\0'); /* End of string */ | |
| 5372 | 519 w = PyString_FromStringAndSize(path, (int) (p - path)); |
| 86 | 520 if (w == NULL) { |
| 5372 | 521 Py_DECREF(v); |
| 86 | 522 return NULL; |
| 523 } | |
| 5372 | 524 PyList_SetItem(v, i, w); |
| 86 | 525 if (*p == '\0') |
| 526 break; | |
| 527 path = p+1; | |
| 528 } | |
| 529 return v; | |
| 530 } | |
| 531 | |
| 532 void | |
| 5372 | 533 PySys_SetPath(path) |
| 86 | 534 char *path; |
| 535 { | |
| 5372 | 536 PyObject *v; |
| 86 | 537 if ((v = makepathobject(path, DELIM)) == NULL) |
| 5372 | 538 Py_FatalError("can't create sys.path"); |
| 539 if (PySys_SetObject("path", v) != 0) | |
| 540 Py_FatalError("can't assign sys.path"); | |
| 541 Py_DECREF(v); | |
|
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542 } |
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543 |
| 5372 | 544 static PyObject * |
| 86 | 545 makeargvobject(argc, argv) |
| 546 int argc; | |
| 547 char **argv; | |
|
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548 { |
| 5372 | 549 PyObject *av; |
|
596
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
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|
550 if (argc <= 0 || argv == NULL) { |
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551 /* Ensure at least one (empty) argument is seen */ |
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552 static char *empty_argv[1] = {""}; |
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553 argv = empty_argv; |
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554 argc = 1; |
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|
555 } |
| 5372 | 556 av = PyList_New(argc); |
| 86 | 557 if (av != NULL) { |
| 558 int i; | |
| 559 for (i = 0; i < argc; i++) { | |
| 5372 | 560 PyObject *v = PyString_FromString(argv[i]); |
| 86 | 561 if (v == NULL) { |
| 5372 | 562 Py_DECREF(av); |
| 86 | 563 av = NULL; |
| 564 break; | |
| 565 } | |
| 5372 | 566 PyList_SetItem(av, i, v); |
|
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567 } |
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568 } |
| 86 | 569 return av; |
| 6 | 570 } |
| 571 | |
| 572 void | |
| 5372 | 573 PySys_SetArgv(argc, argv) |
| 86 | 574 int argc; |
| 575 char **argv; | |
| 6 | 576 { |
| 5372 | 577 PyObject *av = makeargvobject(argc, argv); |
| 578 PyObject *path = PySys_GetObject("path"); | |
| 86 | 579 if (av == NULL) |
| 5372 | 580 Py_FatalError("no mem for sys.argv"); |
| 581 if (PySys_SetObject("argv", av) != 0) | |
| 582 Py_FatalError("can't assign sys.argv"); | |
|
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Always insert script directory in front of sys.path -- if there's no
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583 if (path != NULL) { |
|
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584 char *argv0 = argv[0]; |
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585 char *p = NULL; |
|
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586 int n = 0; |
| 5372 | 587 PyObject *a; |
|
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588 #ifdef HAVE_READLINK |
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589 char link[MAXPATHLEN+1]; |
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590 char argv0copy[2*MAXPATHLEN+1]; |
|
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591 int nr = 0; |
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592 if (argc > 0 && argv0 != NULL) |
|
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593 nr = readlink(argv0, link, MAXPATHLEN); |
|
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|
594 if (nr > 0) { |
|
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595 /* It's a symlink */ |
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596 link[nr] = '\0'; |
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597 if (link[0] == SEP) |
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598 argv0 = link; /* Link to absolute path */ |
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599 else if (strchr(link, SEP) == NULL) |
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600 ; /* Link without path */ |
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601 else { |
|
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602 /* Must join(dirname(argv0), link) */ |
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603 char *q = strrchr(argv0, SEP); |
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604 if (q == NULL) |
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605 argv0 = link; /* argv0 without path */ |
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606 else { |
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607 /* Must make a copy */ |
|
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608 strcpy(argv0copy, argv0); |
|
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609 q = strrchr(argv0copy, SEP); |
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610 strcpy(q+1, link); |
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|
611 argv0 = argv0copy; |
|
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612 } |
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613 } |
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614 } |
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615 #endif /* HAVE_READLINK */ |
|
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616 #if SEP == '\\' /* Special case for MS filename syntax */ |
|
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617 if (argc > 0 && argv0 != NULL) { |
|
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618 char *q; |
|
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619 p = strrchr(argv0, SEP); |
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620 /* Test for alternate separator */ |
|
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621 q = strrchr(p ? p : argv0, '/'); |
|
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622 if (q != NULL) |
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623 p = q; |
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624 if (p != NULL) { |
|
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625 n = p + 1 - argv0; |
|
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626 if (n > 1 && p[-1] != ':') |
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|
627 n--; /* Drop trailing separator */ |
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628 } |
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629 } |
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630 #else /* All other filename syntaxes */ |
|
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631 if (argc > 0 && argv0 != NULL) |
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632 p = strrchr(argv0, SEP); |
|
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633 if (p != NULL) { |
|
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634 n = p + 1 - argv0; |
|
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635 #if SEP == '/' /* Special case for Unix filename syntax */ |
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636 if (n > 1) |
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|
637 n--; /* Drop trailing separator */ |
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|
638 #endif /* Unix */ |
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639 } |
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|
640 #endif /* All others */ |
| 5372 | 641 a = PyString_FromStringAndSize(argv0, n); |
|
3877
408e374934e5
Always insert script directory in front of sys.path -- if there's no
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642 if (a == NULL) |
| 5372 | 643 Py_FatalError("no mem for sys.path insertion"); |
| 644 if (PyList_Insert(path, 0, a) < 0) | |
| 645 Py_FatalError("sys.path.insert(0) failed"); | |
| 646 Py_DECREF(a); | |
|
3806
93868c7a15c9
As a side effect of calling PySys_SetArgv (setpythonargv), the
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647 } |
| 5372 | 648 Py_DECREF(av); |
| 6 | 649 } |
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650 |
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651 |
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652 /* APIs to write to sys.stdout or sys.stderr using a printf-like interface. |
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653 Adapted from code submitted by Just van Rossum. |
|
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654 |
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655 PySys_WriteStdout(format, ...) |
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656 PySys_WriteStderr(format, ...) |
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657 |
|
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658 The first function writes to sys.stdout; the second to sys.stderr. When |
|
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659 there is a problem, they write to the real (C level) stdout or stderr; |
|
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660 no exceptions are raised. |
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661 |
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662 Both take a printf-style format string as their first argument followed |
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663 by a variable length argument list determined by the format string. |
|
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|
664 |
|
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|
665 *** WARNING *** |
|
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|
666 |
|
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|
667 The format should limit the total size of the formatted output string to |
|
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|
668 1000 bytes. In particular, this means that no unrestricted "%s" formats |
|
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|
669 should occur; these should be limited using "%.<N>s where <N> is a |
|
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|
670 decimal number calculated so that <N> plus the maximum size of other |
|
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671 formatted text does not exceed 1000 bytes. Also watch out for "%f", |
|
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672 which can print hundreds of digits for very large numbers. |
|
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|
673 |
|
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|
674 */ |
|
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|
675 |
|
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676 static void |
|
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|
677 mywrite(name, fp, format, va) |
|
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|
678 char *name; |
|
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679 FILE *fp; |
|
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|
680 const char *format; |
|
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681 va_list va; |
|
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682 { |
|
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|
683 PyObject *file; |
|
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684 PyObject *error_type, *error_value, *error_traceback; |
|
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|
685 |
|
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|
686 PyErr_Fetch(&error_type, &error_value, &error_traceback); |
|
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687 file = PySys_GetObject(name); |
|
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688 if (file == NULL || PyFile_AsFile(file) == fp) |
|
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|
689 vfprintf(fp, format, va); |
|
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|
690 else { |
|
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|
691 char buffer[1001]; |
|
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|
692 if (vsprintf(buffer, format, va) >= sizeof(buffer)) |
|
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|
693 Py_FatalError("PySys_WriteStdout/err: buffer overrun"); |
|
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|
694 if (PyFile_WriteString(buffer, file) != 0) { |
|
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|
695 PyErr_Clear(); |
|
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|
696 fputs(buffer, fp); |
|
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|
697 } |
|
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|
698 } |
|
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|
699 PyErr_Restore(error_type, error_value, error_traceback); |
|
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|
700 } |
|
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|
701 |
|
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|
702 void |
|
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|
703 #ifdef HAVE_STDARG_PROTOTYPES |
|
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|
704 PySys_WriteStdout(const char *format, ...) |
|
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|
705 #else |
|
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|
706 PySys_WriteStdout(va_alist) |
|
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707 va_dcl |
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708 #endif |
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709 { |
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710 va_list va; |
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711 |
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712 #ifdef HAVE_STDARG_PROTOTYPES |
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713 va_start(va, format); |
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714 #else |
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715 char *format; |
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716 va_start(va); |
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717 format = va_arg(va, char *); |
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718 #endif |
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719 mywrite("stdout", stdout, format, va); |
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720 va_end(va); |
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721 } |
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722 |
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723 void |
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724 #ifdef HAVE_STDARG_PROTOTYPES |
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725 PySys_WriteStderr(const char *format, ...) |
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726 #else |
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727 PySys_WriteStderr(va_alist) |
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728 va_dcl |
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729 #endif |
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730 { |
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731 va_list va; |
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732 |
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733 #ifdef HAVE_STDARG_PROTOTYPES |
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734 va_start(va, format); |
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735 #else |
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736 char *format; |
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737 va_start(va); |
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738 format = va_arg(va, char *); |
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739 #endif |
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740 mywrite("stderr", stderr, format, va); |
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741 va_end(va); |
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742 } |