Mercurial > cpython-lru_cache-weakref
annotate Python/sysmodule.c @ 13255:916fb024ce94 legacy-trunk
Change copyright notice.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 30 Jun 2000 23:50:40 +0000 |
| parents | 8c8de5b736dc |
| children | 87ee82e5c56d |
| rev | line source |
|---|---|
| 145 | 1 /*********************************************************** |
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
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3 The Netherlands. |
| 145 | 4 |
| 5 All Rights Reserved | |
| 6 | |
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7 Copyright (c) 2000, BeOpen.com. |
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8 Copyright (c) 1995-2000, Corporation for National Research Initiatives. |
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9 Copyright (c) 1990-1995, Stichting Mathematisch Centrum. |
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10 All rights reserved. |
| 145 | 11 |
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12 See the file "Misc/COPYRIGHT" for information on usage and |
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13 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 145 | 14 |
| 15 ******************************************************************/ | |
| 16 | |
| 6 | 17 /* System module */ |
| 18 | |
| 19 /* | |
| 20 Various bits of information used by the interpreter are collected in | |
| 21 module 'sys'. | |
| 86 | 22 Function member: |
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23 - exit(sts): raise SystemExit |
| 6 | 24 Data members: |
| 25 - stdin, stdout, stderr: standard file objects | |
| 86 | 26 - modules: the table of modules (dictionary) |
| 6 | 27 - path: module search path (list of strings) |
| 86 | 28 - argv: script arguments (list of strings) |
| 29 - ps1, ps2: optional primary and secondary prompts (strings) | |
| 6 | 30 */ |
| 31 | |
| 5372 | 32 #include "Python.h" |
| 86 | 33 |
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34 #include "osdefs.h" |
| 86 | 35 |
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36 #ifdef HAVE_UNISTD_H |
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37 #include <unistd.h> |
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38 #endif |
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39 |
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40 #ifdef MS_COREDLL |
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41 extern void *PyWin_DLLhModule; |
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42 /* A string loaded from the DLL at startup: */ |
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43 extern const char *PyWin_DLLVersionString; |
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44 #endif |
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45 |
| 5372 | 46 PyObject * |
| 47 PySys_GetObject(name) | |
| 6 | 48 char *name; |
| 49 { | |
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50 PyThreadState *tstate = PyThreadState_Get(); |
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51 PyObject *sd = tstate->interp->sysdict; |
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52 if (sd == NULL) |
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53 return NULL; |
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54 return PyDict_GetItemString(sd, name); |
| 6 | 55 } |
| 56 | |
| 57 FILE * | |
| 5372 | 58 PySys_GetFile(name, def) |
| 6 | 59 char *name; |
| 60 FILE *def; | |
| 61 { | |
| 62 FILE *fp = NULL; | |
| 5372 | 63 PyObject *v = PySys_GetObject(name); |
| 64 if (v != NULL && PyFile_Check(v)) | |
| 65 fp = PyFile_AsFile(v); | |
| 6 | 66 if (fp == NULL) |
| 67 fp = def; | |
| 68 return fp; | |
| 69 } | |
| 70 | |
| 71 int | |
| 5372 | 72 PySys_SetObject(name, v) |
| 6 | 73 char *name; |
| 5372 | 74 PyObject *v; |
| 6 | 75 { |
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76 PyThreadState *tstate = PyThreadState_Get(); |
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77 PyObject *sd = tstate->interp->sysdict; |
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78 if (v == NULL) { |
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79 if (PyDict_GetItemString(sd, name) == NULL) |
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80 return 0; |
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81 else |
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82 return PyDict_DelItemString(sd, name); |
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83 } |
| 6 | 84 else |
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85 return PyDict_SetItemString(sd, name, v); |
| 6 | 86 } |
| 87 | |
| 5372 | 88 static PyObject * |
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89 sys_exc_info(self, args) |
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90 PyObject *self; |
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91 PyObject *args; |
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92 { |
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93 PyThreadState *tstate; |
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94 if (!PyArg_ParseTuple(args, ":exc_info")) |
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95 return NULL; |
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96 tstate = PyThreadState_Get(); |
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97 return Py_BuildValue( |
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98 "(OOO)", |
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99 tstate->exc_type != NULL ? tstate->exc_type : Py_None, |
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100 tstate->exc_value != NULL ? tstate->exc_value : Py_None, |
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101 tstate->exc_traceback != NULL ? |
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102 tstate->exc_traceback : Py_None); |
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103 } |
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104 |
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105 static char exc_info_doc[] = |
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106 "exc_info() -> (type, value, traceback)\n\ |
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107 \n\ |
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108 Return information about the exception that is currently being handled.\n\ |
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109 This should be called from inside an except clause only."; |
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110 |
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111 static PyObject * |
| 6 | 112 sys_exit(self, args) |
| 5372 | 113 PyObject *self; |
| 114 PyObject *args; | |
| 6 | 115 { |
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116 /* Raise SystemExit so callers may catch it or clean up. */ |
| 5372 | 117 PyErr_SetObject(PyExc_SystemExit, args); |
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118 return NULL; |
| 6 | 119 } |
| 120 | |
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121 static char exit_doc[] = |
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122 "exit([status])\n\ |
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123 \n\ |
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124 Exit the interpreter by raising SystemExit(status).\n\ |
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125 If the status is omitted or None, it defaults to zero (i.e., success).\n\ |
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126 If the status numeric, it will be used as the system exit status.\n\ |
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127 If it is another kind of object, it will be printed and the system\n\ |
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128 exit status will be one (i.e., failure)."; |
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129 |
| 5372 | 130 static PyObject * |
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131 sys_getdefaultencoding(self, args) |
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132 PyObject *self; |
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133 PyObject *args; |
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134 { |
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135 if (!PyArg_ParseTuple(args, ":getdefaultencoding")) |
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136 return NULL; |
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137 return PyString_FromString(PyUnicode_GetDefaultEncoding()); |
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138 } |
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139 |
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140 static char getdefaultencoding_doc[] = |
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141 "getdefaultencoding() -> string\n\ |
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142 \n\ |
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143 Return the current default string encoding used by the Unicode \n\ |
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144 implementation."; |
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145 |
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146 static PyObject * |
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147 sys_setdefaultencoding(self, args) |
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148 PyObject *self; |
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149 PyObject *args; |
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150 { |
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151 char *encoding; |
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152 if (!PyArg_ParseTuple(args, "s:setdefaultencoding", &encoding)) |
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153 return NULL; |
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154 if (PyUnicode_SetDefaultEncoding(encoding)) |
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155 return NULL; |
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156 Py_INCREF(Py_None); |
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157 return Py_None; |
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158 } |
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159 |
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160 static char setdefaultencoding_doc[] = |
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161 "setdefaultencoding(encoding)\n\ |
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162 \n\ |
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163 Set the current default string encoding used by the Unicode implementation."; |
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164 |
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165 static PyObject * |
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166 sys_settrace(self, args) |
| 5372 | 167 PyObject *self; |
| 168 PyObject *args; | |
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169 { |
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170 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 171 if (args == Py_None) |
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172 args = NULL; |
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173 else |
| 5372 | 174 Py_XINCREF(args); |
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175 Py_XDECREF(tstate->sys_tracefunc); |
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176 tstate->sys_tracefunc = args; |
| 5372 | 177 Py_INCREF(Py_None); |
| 178 return Py_None; | |
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179 } |
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180 |
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181 static char settrace_doc[] = |
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182 "settrace(function)\n\ |
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183 \n\ |
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184 Set the global debug tracing function. It will be called on each\n\ |
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185 function call. See the debugger chapter in the library manual."; |
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186 |
| 5372 | 187 static PyObject * |
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188 sys_setprofile(self, args) |
| 5372 | 189 PyObject *self; |
| 190 PyObject *args; | |
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191 { |
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192 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 193 if (args == Py_None) |
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194 args = NULL; |
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195 else |
| 5372 | 196 Py_XINCREF(args); |
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197 Py_XDECREF(tstate->sys_profilefunc); |
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198 tstate->sys_profilefunc = args; |
| 5372 | 199 Py_INCREF(Py_None); |
| 200 return Py_None; | |
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201 } |
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202 |
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203 static char setprofile_doc[] = |
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204 "setprofile(function)\n\ |
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205 \n\ |
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206 Set the profiling function. It will be called on each function call\n\ |
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207 and return. See the profiler chapter in the library manual."; |
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208 |
| 5372 | 209 static PyObject * |
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210 sys_setcheckinterval(self, args) |
| 5372 | 211 PyObject *self; |
| 212 PyObject *args; | |
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213 { |
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214 PyThreadState *tstate = PyThreadState_Get(); |
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215 if (!PyArg_ParseTuple(args, "i:setcheckinterval", &tstate->interp->checkinterval)) |
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216 return NULL; |
| 5372 | 217 Py_INCREF(Py_None); |
| 218 return Py_None; | |
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219 } |
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220 |
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221 static char setcheckinterval_doc[] = |
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222 "setcheckinterval(n)\n\ |
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223 \n\ |
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224 Tell the Python interpreter to check for asynchronous events every\n\ |
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225 n instructions. This also affects how often thread switches occur."; |
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226 |
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227 #ifdef USE_MALLOPT |
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228 /* Link with -lmalloc (or -lmpc) on an SGI */ |
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229 #include <malloc.h> |
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230 |
| 5372 | 231 static PyObject * |
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232 sys_mdebug(self, args) |
| 5372 | 233 PyObject *self; |
| 234 PyObject *args; | |
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235 { |
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236 int flag; |
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237 if (!PyArg_ParseTuple(args, "i:mdebug", &flag)) |
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238 return NULL; |
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239 mallopt(M_DEBUG, flag); |
| 5372 | 240 Py_INCREF(Py_None); |
| 241 return Py_None; | |
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242 } |
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243 #endif /* USE_MALLOPT */ |
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244 |
| 5372 | 245 static PyObject * |
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246 sys_getrefcount(self, args) |
| 5372 | 247 PyObject *self; |
| 248 PyObject *args; | |
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249 { |
| 5372 | 250 PyObject *arg; |
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251 if (!PyArg_ParseTuple(args, "O:getrefcount", &arg)) |
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252 return NULL; |
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253 return PyInt_FromLong(arg->ob_refcnt); |
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254 } |
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255 |
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256 #ifdef Py_TRACE_REFS |
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257 static PyObject * |
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258 sys_gettotalrefcount(PyObject *self, PyObject *args) |
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259 { |
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260 extern long _Py_RefTotal; |
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261 if (!PyArg_ParseTuple(args, ":gettotalrefcount")) |
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262 return NULL; |
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263 return PyInt_FromLong(_Py_RefTotal); |
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264 } |
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265 |
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266 #endif /* Py_TRACE_REFS */ |
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267 |
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268 static char getrefcount_doc[] = |
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269 "getrefcount(object) -> integer\n\ |
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270 \n\ |
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271 Return the current reference count for the object. This includes the\n\ |
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272 temporary reference in the argument list, so it is at least 2."; |
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273 |
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274 #ifdef COUNT_ALLOCS |
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275 static PyObject * |
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276 sys_getcounts(self, args) |
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277 PyObject *self, *args; |
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278 { |
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279 extern PyObject *get_counts Py_PROTO((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 Py_PROTO((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 Py_PROTO((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, getdefaultencoding_doc}, |
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302 #ifdef COUNT_ALLOCS |
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303 {"getcounts", sys_getcounts, 1}, |
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304 #endif |
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305 #ifdef DYNAMIC_EXECUTION_PROFILE |
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306 {"getdxp", _Py_GetDXProfile, 1}, |
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307 #endif |
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308 #ifdef Py_TRACE_REFS |
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309 {"getobjects", _Py_GetObjects, 1}, |
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310 {"gettotalrefcount", sys_gettotalrefcount, 1}, |
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311 #endif |
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312 {"getrefcount", sys_getrefcount, 1, getrefcount_doc}, |
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313 #ifdef USE_MALLOPT |
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314 {"mdebug", sys_mdebug, 1}, |
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315 #endif |
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316 {"setdefaultencoding", sys_setdefaultencoding, 1, setdefaultencoding_doc}, |
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317 {"setcheckinterval", sys_setcheckinterval, 1, setcheckinterval_doc}, |
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318 {"setprofile", sys_setprofile, 0, setprofile_doc}, |
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319 {"settrace", sys_settrace, 0, settrace_doc}, |
| 86 | 320 {NULL, NULL} /* sentinel */ |
| 321 }; | |
| 322 | |
| 5372 | 323 static PyObject * |
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324 list_builtin_module_names() |
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325 { |
| 5372 | 326 PyObject *list = PyList_New(0); |
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327 int i; |
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328 if (list == NULL) |
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329 return NULL; |
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330 for (i = 0; PyImport_Inittab[i].name != NULL; i++) { |
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331 PyObject *name = PyString_FromString( |
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332 PyImport_Inittab[i].name); |
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333 if (name == NULL) |
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334 break; |
| 5372 | 335 PyList_Append(list, name); |
| 336 Py_DECREF(name); | |
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337 } |
| 5372 | 338 if (PyList_Sort(list) != 0) { |
| 339 Py_DECREF(list); | |
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340 list = NULL; |
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341 } |
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342 if (list) { |
| 5372 | 343 PyObject *v = PyList_AsTuple(list); |
| 344 Py_DECREF(list); | |
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345 list = v; |
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346 } |
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347 return list; |
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348 } |
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349 |
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350 /* XXX This doc string is too long to be a single string literal in VC++ 5.0. |
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351 Two literals concatenated works just fine. If you have a K&R compiler |
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352 or other abomination that however *does* understand longer strings, |
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353 get rid of the !!! comment in the middle and the quotes that surround it. */ |
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354 static char sys_doc[] = |
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355 "This module provides access to some objects used or maintained by the\n\ |
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356 interpreter and to functions that interact strongly with the interpreter.\n\ |
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357 \n\ |
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358 Dynamic objects:\n\ |
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359 \n\ |
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360 argv -- command line arguments; argv[0] is the script pathname if known\n\ |
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361 path -- module search path; path[0] is the script directory, else ''\n\ |
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362 modules -- dictionary of loaded modules\n\ |
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363 exitfunc -- you may set this to a function to be called when Python exits\n\ |
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364 \n\ |
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365 stdin -- standard input file object; used by raw_input() and input()\n\ |
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366 stdout -- standard output file object; used by the print statement\n\ |
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367 stderr -- standard error object; used for error messages\n\ |
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368 By assigning another file object (or an object that behaves like a file)\n\ |
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369 to one of these, it is possible to redirect all of the interpreter's I/O.\n\ |
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370 \n\ |
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371 last_type -- type of last uncaught exception\n\ |
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372 last_value -- value of last uncaught exception\n\ |
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373 last_traceback -- traceback of last uncaught exception\n\ |
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374 These three are only available in an interactive session after a\n\ |
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375 traceback has been printed.\n\ |
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376 \n\ |
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377 exc_type -- type of exception currently being handled\n\ |
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378 exc_value -- value of exception currently being handled\n\ |
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379 exc_traceback -- traceback of exception currently being handled\n\ |
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380 The function exc_info() should be used instead of these three,\n\ |
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381 because it is thread-safe.\n\ |
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382 " |
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383 #ifndef MS_WIN16 |
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384 /* Concatenating string here */ |
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385 "\n\ |
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386 Static objects:\n\ |
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387 \n\ |
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388 maxint -- the largest supported integer (the smallest is -maxint-1)\n\ |
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389 builtin_module_names -- tuple of module names built into this intepreter\n\ |
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390 version -- the version of this interpreter as a string\n\ |
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391 version_info -- version information as a tuple\n\ |
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392 hexversion -- version information encoded as a single integer\n\ |
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393 copyright -- copyright notice pertaining to this interpreter\n\ |
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394 platform -- platform identifier\n\ |
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395 executable -- pathname of this Python interpreter\n\ |
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396 prefix -- prefix used to find the Python library\n\ |
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397 exec_prefix -- prefix used to find the machine-specific Python library\n\ |
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398 dllhandle -- [Windows only] integer handle of the Python DLL\n\ |
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399 winver -- [Windows only] version number of the Python DLL\n\ |
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400 __stdin__ -- the original stdin; don't use!\n\ |
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401 __stdout__ -- the original stdout; don't use!\n\ |
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402 __stderr__ -- the original stderr; don't use!\n\ |
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403 \n\ |
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404 Functions:\n\ |
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405 \n\ |
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406 exc_info() -- return thread-safe information about the current exception\n\ |
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407 exit() -- exit the interpreter by raising SystemExit\n\ |
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408 getrefcount() -- return the reference count for an object (plus one :-)\n\ |
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409 setcheckinterval() -- control how often the interpreter checks for events\n\ |
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410 setprofile() -- set the global profiling function\n\ |
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411 settrace() -- set the global debug tracing function\n\ |
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412 "; |
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Jim Ahlstrom patch: the module doc string is too long for 16-bit VC
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413 #endif |
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414 |
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415 PyObject * |
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416 _PySys_Init() |
| 6 | 417 { |
| 5372 | 418 extern int fclose Py_PROTO((FILE *)); |
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419 PyObject *m, *v, *sysdict; |
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420 PyObject *sysin, *sysout, *syserr; |
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421 char *s; |
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422 |
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423 m = Py_InitModule3("sys", sys_methods, sys_doc); |
| 5372 | 424 sysdict = PyModule_GetDict(m); |
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425 |
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426 sysin = PyFile_FromFile(stdin, "<stdin>", "r", NULL); |
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427 sysout = PyFile_FromFile(stdout, "<stdout>", "w", NULL); |
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428 syserr = PyFile_FromFile(stderr, "<stderr>", "w", NULL); |
| 5372 | 429 if (PyErr_Occurred()) |
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430 return NULL; |
| 5372 | 431 PyDict_SetItemString(sysdict, "stdin", sysin); |
| 432 PyDict_SetItemString(sysdict, "stdout", sysout); | |
| 433 PyDict_SetItemString(sysdict, "stderr", syserr); | |
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434 /* Make backup copies for cleanup */ |
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435 PyDict_SetItemString(sysdict, "__stdin__", sysin); |
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436 PyDict_SetItemString(sysdict, "__stdout__", sysout); |
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437 PyDict_SetItemString(sysdict, "__stderr__", syserr); |
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438 Py_XDECREF(sysin); |
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439 Py_XDECREF(sysout); |
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440 Py_XDECREF(syserr); |
| 5372 | 441 PyDict_SetItemString(sysdict, "version", |
| 442 v = PyString_FromString(Py_GetVersion())); | |
|
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443 Py_XDECREF(v); |
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444 PyDict_SetItemString(sysdict, "hexversion", |
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445 v = PyInt_FromLong(PY_VERSION_HEX)); |
| 5372 | 446 Py_XDECREF(v); |
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447 /* |
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448 * These release level checks are mutually exclusive and cover |
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449 * the field, so don't get too fancy with the pre-processor! |
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450 */ |
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451 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_ALPHA |
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452 s = "alpha"; |
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453 #endif |
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454 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_BETA |
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455 s = "beta"; |
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456 #endif |
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457 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_GAMMA |
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458 s = "candidate"; |
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459 #endif |
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460 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_FINAL |
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461 s = "final"; |
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462 #endif |
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463 PyDict_SetItemString(sysdict, "version_info", |
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464 v = Py_BuildValue("iiisi", PY_MAJOR_VERSION, |
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465 PY_MINOR_VERSION, |
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466 PY_MICRO_VERSION, s, |
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467 PY_RELEASE_SERIAL)); |
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468 Py_XDECREF(v); |
| 5372 | 469 PyDict_SetItemString(sysdict, "copyright", |
| 470 v = PyString_FromString(Py_GetCopyright())); | |
| 471 Py_XDECREF(v); | |
| 472 PyDict_SetItemString(sysdict, "platform", | |
| 473 v = PyString_FromString(Py_GetPlatform())); | |
| 474 Py_XDECREF(v); | |
|
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475 PyDict_SetItemString(sysdict, "executable", |
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476 v = PyString_FromString(Py_GetProgramFullPath())); |
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477 Py_XDECREF(v); |
| 5372 | 478 PyDict_SetItemString(sysdict, "prefix", |
| 479 v = PyString_FromString(Py_GetPrefix())); | |
| 480 Py_XDECREF(v); | |
| 481 PyDict_SetItemString(sysdict, "exec_prefix", | |
| 482 v = PyString_FromString(Py_GetExecPrefix())); | |
| 483 Py_XDECREF(v); | |
| 484 PyDict_SetItemString(sysdict, "maxint", | |
| 485 v = PyInt_FromLong(PyInt_GetMax())); | |
| 486 Py_XDECREF(v); | |
| 487 PyDict_SetItemString(sysdict, "builtin_module_names", | |
|
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488 v = list_builtin_module_names()); |
| 5372 | 489 Py_XDECREF(v); |
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490 #ifdef MS_COREDLL |
| 5372 | 491 PyDict_SetItemString(sysdict, "dllhandle", |
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492 v = PyLong_FromVoidPtr(PyWin_DLLhModule)); |
| 5372 | 493 Py_XDECREF(v); |
| 494 PyDict_SetItemString(sysdict, "winver", | |
|
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Get DLL version from a variable.
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495 v = PyString_FromString(PyWin_DLLVersionString)); |
| 5372 | 496 Py_XDECREF(v); |
|
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497 #endif |
| 5372 | 498 if (PyErr_Occurred()) |
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499 return NULL; |
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500 return m; |
| 86 | 501 } |
| 502 | |
| 5372 | 503 static PyObject * |
| 86 | 504 makepathobject(path, delim) |
| 505 char *path; | |
| 506 int delim; | |
| 507 { | |
| 508 int i, n; | |
| 509 char *p; | |
| 5372 | 510 PyObject *v, *w; |
| 6 | 511 |
| 86 | 512 n = 1; |
| 513 p = path; | |
| 514 while ((p = strchr(p, delim)) != NULL) { | |
| 515 n++; | |
| 516 p++; | |
| 517 } | |
| 5372 | 518 v = PyList_New(n); |
| 86 | 519 if (v == NULL) |
| 520 return NULL; | |
| 521 for (i = 0; ; i++) { | |
| 522 p = strchr(path, delim); | |
| 523 if (p == NULL) | |
| 524 p = strchr(path, '\0'); /* End of string */ | |
| 5372 | 525 w = PyString_FromStringAndSize(path, (int) (p - path)); |
| 86 | 526 if (w == NULL) { |
| 5372 | 527 Py_DECREF(v); |
| 86 | 528 return NULL; |
| 529 } | |
| 5372 | 530 PyList_SetItem(v, i, w); |
| 86 | 531 if (*p == '\0') |
| 532 break; | |
| 533 path = p+1; | |
| 534 } | |
| 535 return v; | |
| 536 } | |
| 537 | |
| 538 void | |
| 5372 | 539 PySys_SetPath(path) |
| 86 | 540 char *path; |
| 541 { | |
| 5372 | 542 PyObject *v; |
| 86 | 543 if ((v = makepathobject(path, DELIM)) == NULL) |
| 5372 | 544 Py_FatalError("can't create sys.path"); |
| 545 if (PySys_SetObject("path", v) != 0) | |
| 546 Py_FatalError("can't assign sys.path"); | |
| 547 Py_DECREF(v); | |
|
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548 } |
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549 |
| 5372 | 550 static PyObject * |
| 86 | 551 makeargvobject(argc, argv) |
| 552 int argc; | |
| 553 char **argv; | |
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554 { |
| 5372 | 555 PyObject *av; |
|
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556 if (argc <= 0 || argv == NULL) { |
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557 /* Ensure at least one (empty) argument is seen */ |
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558 static char *empty_argv[1] = {""}; |
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559 argv = empty_argv; |
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560 argc = 1; |
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561 } |
| 5372 | 562 av = PyList_New(argc); |
| 86 | 563 if (av != NULL) { |
| 564 int i; | |
| 565 for (i = 0; i < argc; i++) { | |
| 5372 | 566 PyObject *v = PyString_FromString(argv[i]); |
| 86 | 567 if (v == NULL) { |
| 5372 | 568 Py_DECREF(av); |
| 86 | 569 av = NULL; |
| 570 break; | |
| 571 } | |
| 5372 | 572 PyList_SetItem(av, i, v); |
|
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573 } |
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574 } |
| 86 | 575 return av; |
| 6 | 576 } |
| 577 | |
| 578 void | |
| 5372 | 579 PySys_SetArgv(argc, argv) |
| 86 | 580 int argc; |
| 581 char **argv; | |
| 6 | 582 { |
| 5372 | 583 PyObject *av = makeargvobject(argc, argv); |
| 584 PyObject *path = PySys_GetObject("path"); | |
| 86 | 585 if (av == NULL) |
| 5372 | 586 Py_FatalError("no mem for sys.argv"); |
| 587 if (PySys_SetObject("argv", av) != 0) | |
| 588 Py_FatalError("can't assign sys.argv"); | |
|
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589 if (path != NULL) { |
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590 char *argv0 = argv[0]; |
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591 char *p = NULL; |
|
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592 int n = 0; |
| 5372 | 593 PyObject *a; |
|
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594 #ifdef HAVE_READLINK |
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595 char link[MAXPATHLEN+1]; |
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596 char argv0copy[2*MAXPATHLEN+1]; |
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597 int nr = 0; |
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598 if (argc > 0 && argv0 != NULL) |
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599 nr = readlink(argv0, link, MAXPATHLEN); |
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600 if (nr > 0) { |
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601 /* It's a symlink */ |
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Expand one level of symbolic link in sys.argv[0] before inserting its
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602 link[nr] = '\0'; |
|
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|
603 if (link[0] == SEP) |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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604 argv0 = link; /* Link to absolute path */ |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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|
605 else if (strchr(link, SEP) == NULL) |
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|
606 ; /* Link without path */ |
|
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|
607 else { |
|
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|
608 /* Must join(dirname(argv0), link) */ |
|
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|
609 char *q = strrchr(argv0, SEP); |
|
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610 if (q == NULL) |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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611 argv0 = link; /* argv0 without path */ |
|
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|
612 else { |
|
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|
613 /* Must make a copy */ |
|
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|
614 strcpy(argv0copy, argv0); |
|
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|
615 q = strrchr(argv0copy, SEP); |
|
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|
616 strcpy(q+1, link); |
|
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|
617 argv0 = argv0copy; |
|
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618 } |
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619 } |
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620 } |
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|
621 #endif /* HAVE_READLINK */ |
|
4256
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622 #if SEP == '\\' /* Special case for MS filename syntax */ |
|
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623 if (argc > 0 && argv0 != NULL) { |
|
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624 char *q; |
|
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625 p = strrchr(argv0, SEP); |
|
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626 /* Test for alternate separator */ |
|
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627 q = strrchr(p ? p : argv0, '/'); |
|
4256
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|
628 if (q != NULL) |
|
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|
629 p = q; |
|
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|
630 if (p != NULL) { |
|
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|
631 n = p + 1 - argv0; |
|
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|
632 if (n > 1 && p[-1] != ':') |
|
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|
633 n--; /* Drop trailing separator */ |
|
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|
634 } |
|
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|
635 } |
|
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|
636 #else /* All other filename syntaxes */ |
|
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|
637 if (argc > 0 && argv0 != NULL) |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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|
638 p = strrchr(argv0, SEP); |
|
4256
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|
639 if (p != NULL) { |
|
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|
640 n = p + 1 - argv0; |
|
4256
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Changes to setpythonpath():
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|
641 #if SEP == '/' /* Special case for Unix filename syntax */ |
|
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Changes to setpythonpath():
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|
642 if (n > 1) |
|
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Changes to setpythonpath():
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changeset
|
643 n--; /* Drop trailing separator */ |
|
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|
644 #endif /* Unix */ |
|
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|
645 } |
|
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|
646 #endif /* All others */ |
| 5372 | 647 a = PyString_FromStringAndSize(argv0, n); |
|
3877
408e374934e5
Always insert script directory in front of sys.path -- if there's no
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3806
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|
648 if (a == NULL) |
| 5372 | 649 Py_FatalError("no mem for sys.path insertion"); |
| 650 if (PyList_Insert(path, 0, a) < 0) | |
| 651 Py_FatalError("sys.path.insert(0) failed"); | |
| 652 Py_DECREF(a); | |
|
3806
93868c7a15c9
As a side effect of calling PySys_SetArgv (setpythonargv), the
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|
653 } |
| 5372 | 654 Py_DECREF(av); |
| 6 | 655 } |
|
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|
656 |
|
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|
657 |
|
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|
658 /* APIs to write to sys.stdout or sys.stderr using a printf-like interface. |
|
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|
659 Adapted from code submitted by Just van Rossum. |
|
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|
660 |
|
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|
661 PySys_WriteStdout(format, ...) |
|
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|
662 PySys_WriteStderr(format, ...) |
|
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|
663 |
|
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|
664 The first function writes to sys.stdout; the second to sys.stderr. When |
|
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changeset
|
665 there is a problem, they write to the real (C level) stdout or stderr; |
|
9328
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|
666 no exceptions are raised. |
|
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|
667 |
|
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changeset
|
668 Both take a printf-style format string as their first argument followed |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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changeset
|
669 by a variable length argument list determined by the format string. |
|
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changeset
|
670 |
|
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changeset
|
671 *** WARNING *** |
|
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changeset
|
672 |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
changeset
|
673 The format should limit the total size of the formatted output string to |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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changeset
|
674 1000 bytes. In particular, this means that no unrestricted "%s" formats |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
changeset
|
675 should occur; these should be limited using "%.<N>s where <N> is a |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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changeset
|
676 decimal number calculated so that <N> plus the maximum size of other |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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changeset
|
677 formatted text does not exceed 1000 bytes. Also watch out for "%f", |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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|
678 which can print hundreds of digits for very large numbers. |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
changeset
|
679 |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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changeset
|
680 */ |
|
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|
681 |
|
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diff
changeset
|
682 static void |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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|
683 mywrite(name, fp, format, va) |
|
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New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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|
684 char *name; |
|
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changeset
|
685 FILE *fp; |
|
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|
686 const char *format; |
|
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changeset
|
687 va_list va; |
|
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changeset
|
688 { |
|
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|
689 PyObject *file; |
|
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|
690 PyObject *error_type, *error_value, *error_traceback; |
|
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|
691 |
|
9328
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|
692 PyErr_Fetch(&error_type, &error_value, &error_traceback); |
|
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|
693 file = PySys_GetObject(name); |
|
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|
694 if (file == NULL || PyFile_AsFile(file) == fp) |
|
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diff
changeset
|
695 vfprintf(fp, format, va); |
|
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|
696 else { |
|
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|
697 char buffer[1001]; |
|
9328
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|
698 if (vsprintf(buffer, format, va) >= sizeof(buffer)) |
|
81574e4646b4
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|
699 Py_FatalError("PySys_WriteStdout/err: buffer overrun"); |
|
8314
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|
700 if (PyFile_WriteString(buffer, file) != 0) { |
|
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|
701 PyErr_Clear(); |
|
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|
702 fputs(buffer, fp); |
|
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|
703 } |
|
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diff
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|
704 } |
|
9328
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Guido van Rossum <guido@python.org>
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diff
changeset
|
705 PyErr_Restore(error_type, error_value, error_traceback); |
|
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|
706 } |
|
f94d5ae642a9
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Guido van Rossum <guido@python.org>
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diff
changeset
|
707 |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
Guido van Rossum <guido@python.org>
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diff
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|
708 void |
|
f94d5ae642a9
New APIs to write to sys.stdout or sys.stderr using a printf-like interface.
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diff
changeset
|
709 #ifdef HAVE_STDARG_PROTOTYPES |
|
f94d5ae642a9
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diff
changeset
|
710 PySys_WriteStdout(const char *format, ...) |
|
f94d5ae642a9
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711 #else |
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712 PySys_WriteStdout(va_alist) |
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713 va_dcl |
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714 #endif |
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715 { |
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716 va_list va; |
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717 |
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718 #ifdef HAVE_STDARG_PROTOTYPES |
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719 va_start(va, format); |
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720 #else |
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721 char *format; |
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722 va_start(va); |
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723 format = va_arg(va, char *); |
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724 #endif |
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725 mywrite("stdout", stdout, format, va); |
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726 va_end(va); |
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727 } |
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728 |
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729 void |
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730 #ifdef HAVE_STDARG_PROTOTYPES |
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731 PySys_WriteStderr(const char *format, ...) |
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732 #else |
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733 PySys_WriteStderr(va_alist) |
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734 va_dcl |
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735 #endif |
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736 { |
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737 va_list va; |
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738 |
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739 #ifdef HAVE_STDARG_PROTOTYPES |
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740 va_start(va, format); |
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741 #else |
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742 char *format; |
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743 va_start(va); |
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744 format = va_arg(va, char *); |
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745 #endif |
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746 mywrite("stderr", stderr, format, va); |
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747 va_end(va); |
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748 } |