Mercurial > cpython-lru_cache-weakref
annotate Python/sysmodule.c @ 12398:2392d10e21f1 legacy-trunk
Simplify creation of the version_info value for clarity, per
suggestion from Greg Stein.
| author | Fred Drake <fdrake@acm.org> |
|---|---|
| date | Thu, 13 Apr 2000 20:03:20 +0000 |
| parents | f82b2577fa0c |
| children | c92668766f5d |
| 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 Permission to use, copy, modify, and distribute this software and its |
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8 documentation for any purpose and without fee is hereby granted, |
| 145 | 9 provided that the above copyright notice appear in all copies and that |
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10 both that copyright notice and this permission notice appear in |
| 145 | 11 supporting documentation, and that the names of Stichting Mathematisch |
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12 Centrum or CWI or Corporation for National Research Initiatives or |
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13 CNRI not be used in advertising or publicity pertaining to |
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14 distribution of the software without specific, written prior |
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15 permission. |
| 145 | 16 |
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17 While CWI is the initial source for this software, a modified version |
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18 is made available by the Corporation for National Research Initiatives |
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19 (CNRI) at the Internet address ftp://ftp.python.org. |
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20 |
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21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
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22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
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23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
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24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
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25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
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26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
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28 PERFORMANCE OF THIS SOFTWARE. |
| 145 | 29 |
| 30 ******************************************************************/ | |
| 31 | |
| 6 | 32 /* System module */ |
| 33 | |
| 34 /* | |
| 35 Various bits of information used by the interpreter are collected in | |
| 36 module 'sys'. | |
| 86 | 37 Function member: |
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38 - exit(sts): raise SystemExit |
| 6 | 39 Data members: |
| 40 - stdin, stdout, stderr: standard file objects | |
| 86 | 41 - modules: the table of modules (dictionary) |
| 6 | 42 - path: module search path (list of strings) |
| 86 | 43 - argv: script arguments (list of strings) |
| 44 - ps1, ps2: optional primary and secondary prompts (strings) | |
| 6 | 45 */ |
| 46 | |
| 5372 | 47 #include "Python.h" |
| 86 | 48 |
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49 #include "osdefs.h" |
| 86 | 50 |
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51 #ifdef HAVE_UNISTD_H |
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52 #include <unistd.h> |
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53 #endif |
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54 |
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55 #ifdef MS_COREDLL |
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56 extern void *PyWin_DLLhModule; |
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57 /* A string loaded from the DLL at startup: */ |
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58 extern const char *PyWin_DLLVersionString; |
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59 #endif |
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60 |
| 5372 | 61 PyObject * |
| 62 PySys_GetObject(name) | |
| 6 | 63 char *name; |
| 64 { | |
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65 PyThreadState *tstate = PyThreadState_Get(); |
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66 PyObject *sd = tstate->interp->sysdict; |
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67 if (sd == NULL) |
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68 return NULL; |
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69 return PyDict_GetItemString(sd, name); |
| 6 | 70 } |
| 71 | |
| 72 FILE * | |
| 5372 | 73 PySys_GetFile(name, def) |
| 6 | 74 char *name; |
| 75 FILE *def; | |
| 76 { | |
| 77 FILE *fp = NULL; | |
| 5372 | 78 PyObject *v = PySys_GetObject(name); |
| 79 if (v != NULL && PyFile_Check(v)) | |
| 80 fp = PyFile_AsFile(v); | |
| 6 | 81 if (fp == NULL) |
| 82 fp = def; | |
| 83 return fp; | |
| 84 } | |
| 85 | |
| 86 int | |
| 5372 | 87 PySys_SetObject(name, v) |
| 6 | 88 char *name; |
| 5372 | 89 PyObject *v; |
| 6 | 90 { |
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91 PyThreadState *tstate = PyThreadState_Get(); |
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92 PyObject *sd = tstate->interp->sysdict; |
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93 if (v == NULL) { |
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94 if (PyDict_GetItemString(sd, name) == NULL) |
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95 return 0; |
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96 else |
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97 return PyDict_DelItemString(sd, name); |
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98 } |
| 6 | 99 else |
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100 return PyDict_SetItemString(sd, name, v); |
| 6 | 101 } |
| 102 | |
| 5372 | 103 static PyObject * |
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104 sys_exc_info(self, args) |
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105 PyObject *self; |
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106 PyObject *args; |
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107 { |
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108 PyThreadState *tstate; |
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109 if (!PyArg_ParseTuple(args, ":exc_info")) |
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110 return NULL; |
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111 tstate = PyThreadState_Get(); |
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112 return Py_BuildValue( |
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113 "(OOO)", |
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114 tstate->exc_type != NULL ? tstate->exc_type : Py_None, |
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115 tstate->exc_value != NULL ? tstate->exc_value : Py_None, |
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116 tstate->exc_traceback != NULL ? |
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117 tstate->exc_traceback : Py_None); |
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118 } |
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119 |
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120 static char exc_info_doc[] = |
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121 "exc_info() -> (type, value, traceback)\n\ |
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122 \n\ |
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123 Return information about the exception that is currently being handled.\n\ |
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124 This should be called from inside an except clause only."; |
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125 |
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126 static PyObject * |
| 6 | 127 sys_exit(self, args) |
| 5372 | 128 PyObject *self; |
| 129 PyObject *args; | |
| 6 | 130 { |
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131 /* Raise SystemExit so callers may catch it or clean up. */ |
| 5372 | 132 PyErr_SetObject(PyExc_SystemExit, args); |
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133 return NULL; |
| 6 | 134 } |
| 135 | |
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136 static char exit_doc[] = |
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137 "exit([status])\n\ |
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138 \n\ |
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139 Exit the interpreter by raising SystemExit(status).\n\ |
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140 If the status is omitted or None, it defaults to zero (i.e., success).\n\ |
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141 If the status numeric, it will be used as the system exit status.\n\ |
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142 If it is another kind of object, it will be printed and the system\n\ |
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143 exit status will be one (i.e., failure)."; |
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144 |
| 5372 | 145 static PyObject * |
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146 sys_settrace(self, args) |
| 5372 | 147 PyObject *self; |
| 148 PyObject *args; | |
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149 { |
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150 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 151 if (args == Py_None) |
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152 args = NULL; |
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153 else |
| 5372 | 154 Py_XINCREF(args); |
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155 Py_XDECREF(tstate->sys_tracefunc); |
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156 tstate->sys_tracefunc = args; |
| 5372 | 157 Py_INCREF(Py_None); |
| 158 return Py_None; | |
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159 } |
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160 |
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161 static char settrace_doc[] = |
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162 "settrace(function)\n\ |
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163 \n\ |
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164 Set the global debug tracing function. It will be called on each\n\ |
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165 function call. See the debugger chapter in the library manual."; |
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166 |
| 5372 | 167 static PyObject * |
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168 sys_setprofile(self, args) |
| 5372 | 169 PyObject *self; |
| 170 PyObject *args; | |
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171 { |
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172 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 173 if (args == Py_None) |
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174 args = NULL; |
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175 else |
| 5372 | 176 Py_XINCREF(args); |
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177 Py_XDECREF(tstate->sys_profilefunc); |
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178 tstate->sys_profilefunc = args; |
| 5372 | 179 Py_INCREF(Py_None); |
| 180 return Py_None; | |
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181 } |
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182 |
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183 static char setprofile_doc[] = |
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184 "setprofile(function)\n\ |
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185 \n\ |
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186 Set the profiling function. It will be called on each function call\n\ |
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187 and return. See the profiler chapter in the library manual."; |
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188 |
| 5372 | 189 static PyObject * |
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190 sys_setcheckinterval(self, args) |
| 5372 | 191 PyObject *self; |
| 192 PyObject *args; | |
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193 { |
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194 PyThreadState *tstate = PyThreadState_Get(); |
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195 if (!PyArg_ParseTuple(args, "i:setcheckinterval", &tstate->interp->checkinterval)) |
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196 return NULL; |
| 5372 | 197 Py_INCREF(Py_None); |
| 198 return Py_None; | |
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199 } |
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200 |
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201 static char setcheckinterval_doc[] = |
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202 "setcheckinterval(n)\n\ |
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203 \n\ |
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204 Tell the Python interpreter to check for asynchronous events every\n\ |
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205 n instructions. This also affects how often thread switches occur."; |
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206 |
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207 #ifdef USE_MALLOPT |
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208 /* Link with -lmalloc (or -lmpc) on an SGI */ |
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209 #include <malloc.h> |
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210 |
| 5372 | 211 static PyObject * |
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212 sys_mdebug(self, args) |
| 5372 | 213 PyObject *self; |
| 214 PyObject *args; | |
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215 { |
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216 int flag; |
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217 if (!PyArg_ParseTuple(args, "i:mdebug", &flag)) |
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218 return NULL; |
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219 mallopt(M_DEBUG, flag); |
| 5372 | 220 Py_INCREF(Py_None); |
| 221 return Py_None; | |
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222 } |
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223 #endif /* USE_MALLOPT */ |
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224 |
| 5372 | 225 static PyObject * |
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226 sys_getrefcount(self, args) |
| 5372 | 227 PyObject *self; |
| 228 PyObject *args; | |
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229 { |
| 5372 | 230 PyObject *arg; |
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231 if (!PyArg_ParseTuple(args, "O:getrefcount", &arg)) |
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232 return NULL; |
| 5372 | 233 return PyInt_FromLong((long) arg->ob_refcnt); |
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234 } |
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235 |
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236 static char getrefcount_doc[] = |
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237 "getrefcount(object) -> integer\n\ |
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238 \n\ |
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239 Return the current reference count for the object. This includes the\n\ |
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240 temporary reference in the argument list, so it is at least 2."; |
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241 |
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242 #ifdef COUNT_ALLOCS |
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243 static PyObject * |
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244 sys_getcounts(self, args) |
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245 PyObject *self, *args; |
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246 { |
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247 extern PyObject *get_counts Py_PROTO((void)); |
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248 |
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249 if (!PyArg_ParseTuple(args, ":getcounts")) |
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250 return NULL; |
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251 return get_counts(); |
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252 } |
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253 #endif |
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254 |
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255 #ifdef Py_TRACE_REFS |
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256 /* Defined in objects.c because it uses static globals if that file */ |
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257 extern PyObject *_Py_GetObjects Py_PROTO((PyObject *, PyObject *)); |
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258 #endif |
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259 |
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260 #ifdef DYNAMIC_EXECUTION_PROFILE |
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261 /* Defined in ceval.c because it uses static globals if that file */ |
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262 extern PyObject *_Py_GetDXProfile Py_PROTO((PyObject *, PyObject *)); |
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263 #endif |
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264 |
| 5372 | 265 static PyMethodDef sys_methods[] = { |
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266 /* Might as well keep this in alphabetic order */ |
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267 {"exc_info", sys_exc_info, 1, exc_info_doc}, |
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268 {"exit", sys_exit, 0, exit_doc}, |
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269 #ifdef COUNT_ALLOCS |
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270 {"getcounts", sys_getcounts, 1}, |
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271 #endif |
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272 #ifdef DYNAMIC_EXECUTION_PROFILE |
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273 {"getdxp", _Py_GetDXProfile, 1}, |
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274 #endif |
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275 #ifdef Py_TRACE_REFS |
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276 {"getobjects", _Py_GetObjects, 1}, |
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277 #endif |
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278 {"getrefcount", sys_getrefcount, 1, getrefcount_doc}, |
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279 #ifdef USE_MALLOPT |
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280 {"mdebug", sys_mdebug, 1}, |
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281 #endif |
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282 {"setcheckinterval", sys_setcheckinterval, 1, setcheckinterval_doc}, |
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283 {"setprofile", sys_setprofile, 0, setprofile_doc}, |
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284 {"settrace", sys_settrace, 0, settrace_doc}, |
| 86 | 285 {NULL, NULL} /* sentinel */ |
| 286 }; | |
| 287 | |
| 5372 | 288 static PyObject * |
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289 list_builtin_module_names() |
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290 { |
| 5372 | 291 PyObject *list = PyList_New(0); |
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292 int i; |
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293 if (list == NULL) |
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294 return NULL; |
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295 for (i = 0; PyImport_Inittab[i].name != NULL; i++) { |
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296 PyObject *name = PyString_FromString( |
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297 PyImport_Inittab[i].name); |
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298 if (name == NULL) |
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299 break; |
| 5372 | 300 PyList_Append(list, name); |
| 301 Py_DECREF(name); | |
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302 } |
| 5372 | 303 if (PyList_Sort(list) != 0) { |
| 304 Py_DECREF(list); | |
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305 list = NULL; |
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306 } |
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307 if (list) { |
| 5372 | 308 PyObject *v = PyList_AsTuple(list); |
| 309 Py_DECREF(list); | |
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310 list = v; |
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311 } |
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312 return list; |
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313 } |
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314 |
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315 /* XXX This doc string is too long to be a single string literal in VC++ 5.0. |
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316 Two literals concatenated works just fine. If you have a K&R compiler |
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317 or other abomination that however *does* understand longer strings, |
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318 get rid of the !!! comment in the middle and the quotes that surround it. */ |
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319 static char sys_doc[] = |
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320 "This module provides access to some objects used or maintained by the\n\ |
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321 interpreter and to functions that interact strongly with the interpreter.\n\ |
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322 \n\ |
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323 Dynamic objects:\n\ |
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324 \n\ |
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325 argv -- command line arguments; argv[0] is the script pathname if known\n\ |
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326 path -- module search path; path[0] is the script directory, else ''\n\ |
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327 modules -- dictionary of loaded modules\n\ |
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328 exitfunc -- you may set this to a function to be called when Python exits\n\ |
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329 \n\ |
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330 stdin -- standard input file object; used by raw_input() and input()\n\ |
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331 stdout -- standard output file object; used by the print statement\n\ |
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332 stderr -- standard error object; used for error messages\n\ |
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333 By assigning another file object (or an object that behaves like a file)\n\ |
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334 to one of these, it is possible to redirect all of the interpreter's I/O.\n\ |
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335 \n\ |
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336 last_type -- type of last uncaught exception\n\ |
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337 last_value -- value of last uncaught exception\n\ |
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338 last_traceback -- traceback of last uncaught exception\n\ |
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339 These three are only available in an interactive session after a\n\ |
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340 traceback has been printed.\n\ |
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341 \n\ |
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342 exc_type -- type of exception currently being handled\n\ |
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343 exc_value -- value of exception currently being handled\n\ |
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344 exc_traceback -- traceback of exception currently being handled\n\ |
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345 The function exc_info() should be used instead of these three,\n\ |
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346 because it is thread-safe.\n\ |
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347 " |
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348 #ifndef MS_WIN16 |
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349 /* Concatenating string here */ |
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350 "\n\ |
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351 Static objects:\n\ |
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352 \n\ |
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353 maxint -- the largest supported integer (the smallest is -maxint-1)\n\ |
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354 builtin_module_names -- tuple of module names built into this intepreter\n\ |
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355 version -- the version of this interpreter as a string\n\ |
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356 version_info -- version information as a tuple\n\ |
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357 hexversion -- version information encoded as a single integer\n\ |
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358 copyright -- copyright notice pertaining to this interpreter\n\ |
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359 platform -- platform identifier\n\ |
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360 executable -- pathname of this Python interpreter\n\ |
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361 prefix -- prefix used to find the Python library\n\ |
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362 exec_prefix -- prefix used to find the machine-specific Python library\n\ |
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363 dllhandle -- [Windows only] integer handle of the Python DLL\n\ |
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364 winver -- [Windows only] version number of the Python DLL\n\ |
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365 __stdin__ -- the original stdin; don't use!\n\ |
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366 __stdout__ -- the original stdout; don't use!\n\ |
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367 __stderr__ -- the original stderr; don't use!\n\ |
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368 \n\ |
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369 Functions:\n\ |
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370 \n\ |
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371 exc_info() -- return thread-safe information about the current exception\n\ |
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372 exit() -- exit the interpreter by raising SystemExit\n\ |
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373 getrefcount() -- return the reference count for an object (plus one :-)\n\ |
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374 setcheckinterval() -- control how often the interpreter checks for events\n\ |
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375 setprofile() -- set the global profiling function\n\ |
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376 settrace() -- set the global debug tracing function\n\ |
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377 "; |
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378 #endif |
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379 |
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380 PyObject * |
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381 _PySys_Init() |
| 6 | 382 { |
| 5372 | 383 extern int fclose Py_PROTO((FILE *)); |
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384 PyObject *m, *v, *sysdict; |
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385 PyObject *sysin, *sysout, *syserr; |
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386 char *s; |
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387 |
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388 m = Py_InitModule3("sys", sys_methods, sys_doc); |
| 5372 | 389 sysdict = PyModule_GetDict(m); |
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390 |
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391 sysin = PyFile_FromFile(stdin, "<stdin>", "r", NULL); |
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392 sysout = PyFile_FromFile(stdout, "<stdout>", "w", NULL); |
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393 syserr = PyFile_FromFile(stderr, "<stderr>", "w", NULL); |
| 5372 | 394 if (PyErr_Occurred()) |
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395 return NULL; |
| 5372 | 396 PyDict_SetItemString(sysdict, "stdin", sysin); |
| 397 PyDict_SetItemString(sysdict, "stdout", sysout); | |
| 398 PyDict_SetItemString(sysdict, "stderr", syserr); | |
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399 /* Make backup copies for cleanup */ |
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400 PyDict_SetItemString(sysdict, "__stdin__", sysin); |
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401 PyDict_SetItemString(sysdict, "__stdout__", sysout); |
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402 PyDict_SetItemString(sysdict, "__stderr__", syserr); |
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403 Py_XDECREF(sysin); |
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404 Py_XDECREF(sysout); |
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405 Py_XDECREF(syserr); |
| 5372 | 406 PyDict_SetItemString(sysdict, "version", |
| 407 v = PyString_FromString(Py_GetVersion())); | |
|
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408 Py_XDECREF(v); |
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409 PyDict_SetItemString(sysdict, "hexversion", |
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410 v = PyInt_FromLong(PY_VERSION_HEX)); |
| 5372 | 411 Py_XDECREF(v); |
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412 /* |
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413 * These release level checks are mutually exclusive and cover |
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414 * the field, so don't get too fancy with the pre-processor! |
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415 */ |
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|
416 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_ALPHA |
|
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417 s = "alpha"; |
|
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|
418 #endif |
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f82b2577fa0c
Capitulate, changing version_info to a 5-tuple:
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|
419 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_BETA |
|
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|
420 s = "beta"; |
|
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diff
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|
421 #endif |
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Capitulate, changing version_info to a 5-tuple:
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diff
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|
422 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_GAMMA |
|
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Simplify creation of the version_info value for clarity, per
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|
423 s = "candidate"; |
|
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Capitulate, changing version_info to a 5-tuple:
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diff
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|
424 #endif |
|
12394
60dd95c75999
Define version_info to be a tuple (major, minor, micro, level); level
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|
425 #if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_FINAL |
|
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Simplify creation of the version_info value for clarity, per
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426 s = "final"; |
|
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Capitulate, changing version_info to a 5-tuple:
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diff
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|
427 #endif |
|
12394
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diff
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|
428 PyDict_SetItemString(sysdict, "version_info", |
|
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Simplify creation of the version_info value for clarity, per
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|
429 v = Py_BuildValue("iiisi", PY_MAJOR_VERSION, |
|
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|
430 PY_MINOR_VERSION, |
|
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|
431 PY_MICRO_VERSION, s, |
|
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|
432 PY_RELEASE_SERIAL)); |
|
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|
433 Py_XDECREF(v); |
| 5372 | 434 PyDict_SetItemString(sysdict, "copyright", |
| 435 v = PyString_FromString(Py_GetCopyright())); | |
| 436 Py_XDECREF(v); | |
| 437 PyDict_SetItemString(sysdict, "platform", | |
| 438 v = PyString_FromString(Py_GetPlatform())); | |
| 439 Py_XDECREF(v); | |
|
5598
1f206c91daee
Set sys.executable to full path of python (from argv[0]).
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440 PyDict_SetItemString(sysdict, "executable", |
|
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Set sys.executable to full path of python (from argv[0]).
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441 v = PyString_FromString(Py_GetProgramFullPath())); |
|
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Set sys.executable to full path of python (from argv[0]).
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|
442 Py_XDECREF(v); |
| 5372 | 443 PyDict_SetItemString(sysdict, "prefix", |
| 444 v = PyString_FromString(Py_GetPrefix())); | |
| 445 Py_XDECREF(v); | |
| 446 PyDict_SetItemString(sysdict, "exec_prefix", | |
| 447 v = PyString_FromString(Py_GetExecPrefix())); | |
| 448 Py_XDECREF(v); | |
| 449 PyDict_SetItemString(sysdict, "maxint", | |
| 450 v = PyInt_FromLong(PyInt_GetMax())); | |
| 451 Py_XDECREF(v); | |
| 452 PyDict_SetItemString(sysdict, "builtin_module_names", | |
|
2052
d7e91437f0a2
Lots of changes, most minor (fatal() instead of abort(), use of
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|
453 v = list_builtin_module_names()); |
| 5372 | 454 Py_XDECREF(v); |
|
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c80c515999b9
Use MS_DLL_ID as sys.winver
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|
455 #ifdef MS_COREDLL |
| 5372 | 456 PyDict_SetItemString(sysdict, "dllhandle", |
| 457 v = PyInt_FromLong((int)PyWin_DLLhModule)); | |
| 458 Py_XDECREF(v); | |
| 459 PyDict_SetItemString(sysdict, "winver", | |
|
6352
b62a7a59414e
Get DLL version from a variable.
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460 v = PyString_FromString(PyWin_DLLVersionString)); |
| 5372 | 461 Py_XDECREF(v); |
|
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1dfc519ea3cb
Under NT, define sys.dllhandle and sys.winver (Mark H.).
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462 #endif |
| 5372 | 463 if (PyErr_Occurred()) |
|
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8d2194e22e67
The last of the mass checkins for separate (sub)interpreters.
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464 return NULL; |
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The last of the mass checkins for separate (sub)interpreters.
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|
465 return m; |
| 86 | 466 } |
| 467 | |
| 5372 | 468 static PyObject * |
| 86 | 469 makepathobject(path, delim) |
| 470 char *path; | |
| 471 int delim; | |
| 472 { | |
| 473 int i, n; | |
| 474 char *p; | |
| 5372 | 475 PyObject *v, *w; |
| 6 | 476 |
| 86 | 477 n = 1; |
| 478 p = path; | |
| 479 while ((p = strchr(p, delim)) != NULL) { | |
| 480 n++; | |
| 481 p++; | |
| 482 } | |
| 5372 | 483 v = PyList_New(n); |
| 86 | 484 if (v == NULL) |
| 485 return NULL; | |
| 486 for (i = 0; ; i++) { | |
| 487 p = strchr(path, delim); | |
| 488 if (p == NULL) | |
| 489 p = strchr(path, '\0'); /* End of string */ | |
| 5372 | 490 w = PyString_FromStringAndSize(path, (int) (p - path)); |
| 86 | 491 if (w == NULL) { |
| 5372 | 492 Py_DECREF(v); |
| 86 | 493 return NULL; |
| 494 } | |
| 5372 | 495 PyList_SetItem(v, i, w); |
| 86 | 496 if (*p == '\0') |
| 497 break; | |
| 498 path = p+1; | |
| 499 } | |
| 500 return v; | |
| 501 } | |
| 502 | |
| 503 void | |
| 5372 | 504 PySys_SetPath(path) |
| 86 | 505 char *path; |
| 506 { | |
| 5372 | 507 PyObject *v; |
| 86 | 508 if ((v = makepathobject(path, DELIM)) == NULL) |
| 5372 | 509 Py_FatalError("can't create sys.path"); |
| 510 if (PySys_SetObject("path", v) != 0) | |
| 511 Py_FatalError("can't assign sys.path"); | |
| 512 Py_DECREF(v); | |
|
83
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513 } |
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|
514 |
| 5372 | 515 static PyObject * |
| 86 | 516 makeargvobject(argc, argv) |
| 517 int argc; | |
| 518 char **argv; | |
|
83
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519 { |
| 5372 | 520 PyObject *av; |
|
596
e18f1fa398a3
Ensure that sys.argv[0] always exists (maybe as empty string).
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|
521 if (argc <= 0 || argv == NULL) { |
|
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Ensure that sys.argv[0] always exists (maybe as empty string).
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522 /* Ensure at least one (empty) argument is seen */ |
|
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523 static char *empty_argv[1] = {""}; |
|
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|
524 argv = empty_argv; |
|
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Ensure that sys.argv[0] always exists (maybe as empty string).
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525 argc = 1; |
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Ensure that sys.argv[0] always exists (maybe as empty string).
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526 } |
| 5372 | 527 av = PyList_New(argc); |
| 86 | 528 if (av != NULL) { |
| 529 int i; | |
| 530 for (i = 0; i < argc; i++) { | |
| 5372 | 531 PyObject *v = PyString_FromString(argv[i]); |
| 86 | 532 if (v == NULL) { |
| 5372 | 533 Py_DECREF(av); |
| 86 | 534 av = NULL; |
| 535 break; | |
| 536 } | |
| 5372 | 537 PyList_SetItem(av, i, v); |
|
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538 } |
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|
539 } |
| 86 | 540 return av; |
| 6 | 541 } |
| 542 | |
| 543 void | |
| 5372 | 544 PySys_SetArgv(argc, argv) |
| 86 | 545 int argc; |
| 546 char **argv; | |
| 6 | 547 { |
| 5372 | 548 PyObject *av = makeargvobject(argc, argv); |
| 549 PyObject *path = PySys_GetObject("path"); | |
| 86 | 550 if (av == NULL) |
| 5372 | 551 Py_FatalError("no mem for sys.argv"); |
| 552 if (PySys_SetObject("argv", av) != 0) | |
| 553 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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554 if (path != NULL) { |
|
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555 char *argv0 = argv[0]; |
|
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|
556 char *p = NULL; |
|
4256
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557 int n = 0; |
| 5372 | 558 PyObject *a; |
|
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559 #ifdef HAVE_READLINK |
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|
560 char link[MAXPATHLEN+1]; |
|
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|
561 char argv0copy[2*MAXPATHLEN+1]; |
|
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562 int nr = 0; |
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563 if (argc > 0 && argv0 != NULL) |
|
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564 nr = readlink(argv0, link, MAXPATHLEN); |
|
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565 if (nr > 0) { |
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566 /* 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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567 link[nr] = '\0'; |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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|
568 if (link[0] == SEP) |
|
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|
569 argv0 = link; /* Link to absolute path */ |
|
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570 else if (strchr(link, SEP) == NULL) |
|
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|
571 ; /* Link without path */ |
|
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572 else { |
|
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|
573 /* Must join(dirname(argv0), link) */ |
|
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574 char *q = strrchr(argv0, SEP); |
|
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|
575 if (q == NULL) |
|
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576 argv0 = link; /* argv0 without path */ |
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577 else { |
|
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|
578 /* Must make a copy */ |
|
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579 strcpy(argv0copy, argv0); |
|
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|
580 q = strrchr(argv0copy, SEP); |
|
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|
581 strcpy(q+1, link); |
|
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|
582 argv0 = argv0copy; |
|
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|
583 } |
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584 } |
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585 } |
|
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|
586 #endif /* HAVE_READLINK */ |
|
4256
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587 #if SEP == '\\' /* Special case for MS filename syntax */ |
|
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|
588 if (argc > 0 && argv0 != NULL) { |
|
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589 char *q; |
|
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|
590 p = strrchr(argv0, SEP); |
|
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|
591 /* Test for alternate separator */ |
|
5340
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|
592 q = strrchr(p ? p : argv0, '/'); |
|
4256
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|
593 if (q != NULL) |
|
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|
594 p = q; |
|
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|
595 if (p != NULL) { |
|
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Expand one level of symbolic link in sys.argv[0] before inserting its
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|
596 n = p + 1 - argv0; |
|
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|
597 if (n > 1 && p[-1] != ':') |
|
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|
598 n--; /* Drop trailing separator */ |
|
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Changes to setpythonpath():
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|
599 } |
|
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600 } |
|
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|
601 #else /* All other filename syntaxes */ |
|
5340
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Expand one level of symbolic link in sys.argv[0] before inserting its
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|
602 if (argc > 0 && argv0 != NULL) |
|
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|
603 p = strrchr(argv0, SEP); |
|
4256
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|
604 if (p != NULL) { |
|
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|
605 n = p + 1 - argv0; |
|
4256
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Changes to setpythonpath():
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|
606 #if SEP == '/' /* Special case for Unix filename syntax */ |
|
e225e70fd657
Changes to setpythonpath():
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607 if (n > 1) |
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608 n--; /* Drop trailing separator */ |
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609 #endif /* Unix */ |
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610 } |
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611 #endif /* All others */ |
| 5372 | 612 a = PyString_FromStringAndSize(argv0, n); |
|
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613 if (a == NULL) |
| 5372 | 614 Py_FatalError("no mem for sys.path insertion"); |
| 615 if (PyList_Insert(path, 0, a) < 0) | |
| 616 Py_FatalError("sys.path.insert(0) failed"); | |
| 617 Py_DECREF(a); | |
|
3806
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618 } |
| 5372 | 619 Py_DECREF(av); |
| 6 | 620 } |
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621 |
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622 |
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623 /* APIs to write to sys.stdout or sys.stderr using a printf-like interface. |
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624 Adapted from code submitted by Just van Rossum. |
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625 |
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626 PySys_WriteStdout(format, ...) |
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627 PySys_WriteStderr(format, ...) |
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628 |
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629 The first function writes to sys.stdout; the second to sys.stderr. When |
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630 there is a problem, they write to the real (C level) stdout or stderr; |
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631 no exceptions are raised. |
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632 |
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633 Both take a printf-style format string as their first argument followed |
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634 by a variable length argument list determined by the format string. |
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635 |
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636 *** WARNING *** |
|
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637 |
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638 The format should limit the total size of the formatted output string to |
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639 1000 bytes. In particular, this means that no unrestricted "%s" formats |
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640 should occur; these should be limited using "%.<N>s where <N> is a |
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641 decimal number calculated so that <N> plus the maximum size of other |
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642 formatted text does not exceed 1000 bytes. Also watch out for "%f", |
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643 which can print hundreds of digits for very large numbers. |
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644 |
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645 */ |
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646 |
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647 static void |
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648 mywrite(name, fp, format, va) |
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649 char *name; |
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650 FILE *fp; |
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651 const char *format; |
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652 va_list va; |
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653 { |
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654 PyObject *file; |
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655 PyObject *error_type, *error_value, *error_traceback; |
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656 |
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657 PyErr_Fetch(&error_type, &error_value, &error_traceback); |
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658 file = PySys_GetObject(name); |
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659 if (file == NULL || PyFile_AsFile(file) == fp) |
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660 vfprintf(fp, format, va); |
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661 else { |
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662 char buffer[1001]; |
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663 if (vsprintf(buffer, format, va) >= sizeof(buffer)) |
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664 Py_FatalError("PySys_WriteStdout/err: buffer overrun"); |
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665 if (PyFile_WriteString(buffer, file) != 0) { |
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666 PyErr_Clear(); |
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667 fputs(buffer, fp); |
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668 } |
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669 } |
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670 PyErr_Restore(error_type, error_value, error_traceback); |
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671 } |
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672 |
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673 void |
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674 #ifdef HAVE_STDARG_PROTOTYPES |
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675 PySys_WriteStdout(const char *format, ...) |
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676 #else |
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677 PySys_WriteStdout(va_alist) |
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678 va_dcl |
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679 #endif |
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680 { |
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681 va_list va; |
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682 |
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683 #ifdef HAVE_STDARG_PROTOTYPES |
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684 va_start(va, format); |
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685 #else |
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686 char *format; |
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687 va_start(va); |
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688 format = va_arg(va, char *); |
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689 #endif |
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690 mywrite("stdout", stdout, format, va); |
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691 va_end(va); |
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692 } |
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693 |
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694 void |
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695 #ifdef HAVE_STDARG_PROTOTYPES |
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696 PySys_WriteStderr(const char *format, ...) |
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697 #else |
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698 PySys_WriteStderr(va_alist) |
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699 va_dcl |
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700 #endif |
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701 { |
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702 va_list va; |
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703 |
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704 #ifdef HAVE_STDARG_PROTOTYPES |
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705 va_start(va, format); |
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706 #else |
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707 char *format; |
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708 va_start(va); |
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709 format = va_arg(va, char *); |
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710 #endif |
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711 mywrite("stderr", stderr, format, va); |
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712 va_end(va); |
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713 } |