Mercurial > cpython-lru_cache-weakref
annotate Python/sysmodule.c @ 8704:83c8adaa084f legacy-trunk
Added support for two new standard errors: EnvironmentError and
OSError. The EnvironmentError serves primarily as the (common
implementation) base class for IOError and OSError. OSError is used
by posixmodule.c
Also added tuple definition of EnvironmentError when using string
based exceptions.
| author | Barry Warsaw <barry@python.org> |
|---|---|
| date | Thu, 23 Jul 1998 15:59:57 +0000 |
| parents | 6e8b0e754a7f |
| children | 44baef8ab5c8 |
| 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 return PyDict_GetItemString(sd, name); |
| 6 | 68 } |
| 69 | |
| 70 FILE * | |
| 5372 | 71 PySys_GetFile(name, def) |
| 6 | 72 char *name; |
| 73 FILE *def; | |
| 74 { | |
| 75 FILE *fp = NULL; | |
| 5372 | 76 PyObject *v = PySys_GetObject(name); |
| 77 if (v != NULL && PyFile_Check(v)) | |
| 78 fp = PyFile_AsFile(v); | |
| 6 | 79 if (fp == NULL) |
| 80 fp = def; | |
| 81 return fp; | |
| 82 } | |
| 83 | |
| 84 int | |
| 5372 | 85 PySys_SetObject(name, v) |
| 6 | 86 char *name; |
| 5372 | 87 PyObject *v; |
| 6 | 88 { |
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89 PyThreadState *tstate = PyThreadState_Get(); |
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90 PyObject *sd = tstate->interp->sysdict; |
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91 if (v == NULL) { |
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92 if (PyDict_GetItemString(sd, name) == NULL) |
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93 return 0; |
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94 else |
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95 return PyDict_DelItemString(sd, name); |
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96 } |
| 6 | 97 else |
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98 return PyDict_SetItemString(sd, name, v); |
| 6 | 99 } |
| 100 | |
| 5372 | 101 static PyObject * |
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102 sys_exc_info(self, args) |
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103 PyObject *self; |
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104 PyObject *args; |
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105 { |
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106 PyThreadState *tstate; |
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107 if (!PyArg_Parse(args, "")) |
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108 return NULL; |
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109 tstate = PyThreadState_Get(); |
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110 return Py_BuildValue( |
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111 "(OOO)", |
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112 tstate->exc_type != NULL ? tstate->exc_type : Py_None, |
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113 tstate->exc_value != NULL ? tstate->exc_value : Py_None, |
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114 tstate->exc_traceback != NULL ? |
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115 tstate->exc_traceback : Py_None); |
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116 } |
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117 |
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118 static char exc_info_doc[] = |
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119 "exc_info() -> (type, value, traceback)\n\ |
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120 \n\ |
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121 Return information about the exception that is currently being handled.\n\ |
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122 This should be called from inside an except clause only."; |
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123 |
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124 static PyObject * |
| 6 | 125 sys_exit(self, args) |
| 5372 | 126 PyObject *self; |
| 127 PyObject *args; | |
| 6 | 128 { |
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129 /* Raise SystemExit so callers may catch it or clean up. */ |
| 5372 | 130 PyErr_SetObject(PyExc_SystemExit, args); |
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131 return NULL; |
| 6 | 132 } |
| 133 | |
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134 static char exit_doc[] = |
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135 "exit([status])\n\ |
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136 \n\ |
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137 Exit the interpreter by raising SystemExit(status).\n\ |
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138 If the status is omitted or None, it defaults to zero (i.e., success).\n\ |
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139 If the status numeric, it will be used as the system exit status.\n\ |
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140 If it is another kind of object, it will be printed and the system\n\ |
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141 exit status will be one (i.e., failure)."; |
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142 |
| 5372 | 143 static PyObject * |
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144 sys_settrace(self, args) |
| 5372 | 145 PyObject *self; |
| 146 PyObject *args; | |
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147 { |
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148 PyThreadState *tstate = PyThreadState_Get(); |
| 5372 | 149 if (args == Py_None) |
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150 args = NULL; |
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151 else |
| 5372 | 152 Py_XINCREF(args); |
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153 Py_XDECREF(tstate->sys_tracefunc); |
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154 tstate->sys_tracefunc = args; |
| 5372 | 155 Py_INCREF(Py_None); |
| 156 return Py_None; | |
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157 } |
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158 |
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159 static char settrace_doc[] = |
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160 "settrace(function)\n\ |
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161 \n\ |
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162 Set the global debug tracing function. It will be called on each\n\ |
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163 function call. See the debugger chapter in the library manual."; |
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164 |
| 5372 | 165 static PyObject * |
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166 sys_setprofile(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_profilefunc); |
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176 tstate->sys_profilefunc = 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 setprofile_doc[] = |
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182 "setprofile(function)\n\ |
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183 \n\ |
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184 Set the profiling function. It will be called on each function call\n\ |
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185 and return. See the profiler chapter in the library manual."; |
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186 |
| 5372 | 187 static PyObject * |
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188 sys_setcheckinterval(self, args) |
| 5372 | 189 PyObject *self; |
| 190 PyObject *args; | |
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191 { |
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192 PyThreadState *tstate = PyThreadState_Get(); |
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193 if (!PyArg_ParseTuple(args, "i", &tstate->interp->checkinterval)) |
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194 return NULL; |
| 5372 | 195 Py_INCREF(Py_None); |
| 196 return Py_None; | |
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197 } |
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198 |
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199 static char setcheckinterval_doc[] = |
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200 "setcheckinterval(n)\n\ |
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201 \n\ |
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202 Tell the Python interpreter to check for asynchronous events every\n\ |
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203 n instructions. This also affects how often thread switches occur."; |
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204 |
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205 #ifdef USE_MALLOPT |
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206 /* Link with -lmalloc (or -lmpc) on an SGI */ |
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207 #include <malloc.h> |
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208 |
| 5372 | 209 static PyObject * |
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210 sys_mdebug(self, args) |
| 5372 | 211 PyObject *self; |
| 212 PyObject *args; | |
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213 { |
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214 int flag; |
| 5372 | 215 if (!PyArg_Parse(args, "i", &flag)) |
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216 return NULL; |
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217 mallopt(M_DEBUG, flag); |
| 5372 | 218 Py_INCREF(Py_None); |
| 219 return Py_None; | |
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220 } |
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221 #endif /* USE_MALLOPT */ |
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222 |
| 5372 | 223 static PyObject * |
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224 sys_getrefcount(self, args) |
| 5372 | 225 PyObject *self; |
| 226 PyObject *args; | |
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227 { |
| 5372 | 228 PyObject *arg; |
| 229 if (!PyArg_Parse(args, "O", &arg)) | |
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230 return NULL; |
| 5372 | 231 return PyInt_FromLong((long) arg->ob_refcnt); |
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232 } |
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233 |
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234 static char getrefcount_doc[] = |
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235 "getrefcount(object) -> integer\n\ |
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236 \n\ |
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237 Return the current reference count for the object. This includes the\n\ |
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238 temporary reference in the argument list, so it is at least 2."; |
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239 |
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240 #ifdef COUNT_ALLOCS |
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241 static PyObject * |
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242 sys_getcounts(self, args) |
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243 PyObject *self, *args; |
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244 { |
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245 extern PyObject *get_counts Py_PROTO((void)); |
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246 |
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247 if (!PyArg_Parse(args, "")) |
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248 return NULL; |
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249 return get_counts(); |
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250 } |
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251 #endif |
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252 |
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253 #ifdef Py_TRACE_REFS |
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254 /* Defined in objects.c because it uses static globals if that file */ |
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255 extern PyObject *_Py_GetObjects Py_PROTO((PyObject *, PyObject *)); |
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256 #endif |
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257 |
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258 #ifdef DYNAMIC_EXECUTION_PROFILE |
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259 /* Defined in ceval.c because it uses static globals if that file */ |
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260 extern PyObject *_Py_GetDXProfile Py_PROTO((PyObject *, PyObject *)); |
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261 #endif |
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262 |
| 5372 | 263 static PyMethodDef sys_methods[] = { |
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264 /* Might as well keep this in alphabetic order */ |
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265 {"exc_info", sys_exc_info, 0, exc_info_doc}, |
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266 {"exit", sys_exit, 0, exit_doc}, |
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267 #ifdef COUNT_ALLOCS |
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268 {"getcounts", sys_getcounts, 0}, |
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269 #endif |
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270 #ifdef DYNAMIC_EXECUTION_PROFILE |
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271 {"getdxp", _Py_GetDXProfile, 1}, |
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272 #endif |
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273 #ifdef Py_TRACE_REFS |
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274 {"getobjects", _Py_GetObjects, 1}, |
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275 #endif |
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276 {"getrefcount", sys_getrefcount, 0, getrefcount_doc}, |
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277 #ifdef USE_MALLOPT |
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278 {"mdebug", sys_mdebug, 0}, |
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279 #endif |
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280 {"setcheckinterval", sys_setcheckinterval, 1, setcheckinterval_doc}, |
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281 {"setprofile", sys_setprofile, 0, setprofile_doc}, |
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282 {"settrace", sys_settrace, 0, settrace_doc}, |
| 86 | 283 {NULL, NULL} /* sentinel */ |
| 284 }; | |
| 285 | |
| 5372 | 286 static PyObject * |
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287 list_builtin_module_names() |
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288 { |
| 5372 | 289 PyObject *list = PyList_New(0); |
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290 int i; |
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291 if (list == NULL) |
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292 return NULL; |
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293 for (i = 0; PyImport_Inittab[i].name != NULL; i++) { |
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294 PyObject *name = PyString_FromString( |
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295 PyImport_Inittab[i].name); |
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296 if (name == NULL) |
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297 break; |
| 5372 | 298 PyList_Append(list, name); |
| 299 Py_DECREF(name); | |
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300 } |
| 5372 | 301 if (PyList_Sort(list) != 0) { |
| 302 Py_DECREF(list); | |
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303 list = NULL; |
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304 } |
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305 if (list) { |
| 5372 | 306 PyObject *v = PyList_AsTuple(list); |
| 307 Py_DECREF(list); | |
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308 list = v; |
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309 } |
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310 return list; |
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311 } |
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312 |
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313 /* XXX If your compiler doesn't like strings this long, edit it. */ |
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314 static char sys_doc[] = |
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315 "This module provides access to some objects used or maintained by the\n\ |
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316 interpreter and to functions that interact strongly with the interpreter.\n\ |
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317 \n\ |
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318 Dynamic objects:\n\ |
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319 \n\ |
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320 argv -- command line arguments; argv[0] is the script pathname if known\n\ |
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321 path -- module search path; path[0] is the script directory, else ''\n\ |
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322 modules -- dictionary of loaded modules\n\ |
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323 exitfunc -- you may set this to a function to be called when Python exits\n\ |
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324 \n\ |
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325 stdin -- standard input file object; used by raw_input() and input()\n\ |
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326 stdout -- standard output file object; used by the print statement\n\ |
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327 stderr -- standard error object; used for error messages\n\ |
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328 By assigning another file object (or an object that behaves like a file)\n\ |
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329 to one of these, it is possible to redirect all of the interpreter's I/O.\n\ |
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330 \n\ |
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331 last_type -- type of last uncaught exception\n\ |
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332 last_value -- value of last uncaught exception\n\ |
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333 last_traceback -- traceback of last uncaught exception\n\ |
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334 These three are only available in an interactive session after a\n\ |
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335 traceback has been printed.\n\ |
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336 \n\ |
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337 exc_type -- type of exception currently being handled\n\ |
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338 exc_value -- value of exception currently being handled\n\ |
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339 exc_traceback -- traceback of exception currently being handled\n\ |
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340 The function exc_info() should be used instead of these three,\n\ |
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341 because it is thread-safe.\n\ |
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342 \n\ |
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343 Static objects:\n\ |
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344 \n\ |
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345 maxint -- the largest supported integer (the smallest is -maxint-1)\n\ |
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346 builtin_module_names -- tuple of module names built into this intepreter\n\ |
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347 version -- the version of this interpreter\n\ |
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348 copyright -- copyright notice pertaining to this interpreter\n\ |
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349 platform -- platform identifier\n\ |
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350 executable -- pathname of this Python interpreter\n\ |
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351 prefix -- prefix used to find the Python library\n\ |
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352 exec_prefix -- prefix used to find the machine-specific Python library\n\ |
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353 dllhandle -- [Windows only] integer handle of the Python DLL\n\ |
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354 winver -- [Windows only] version number of the Python DLL\n\ |
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355 __stdin__ -- the original stdin; don't use!\n\ |
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356 __stdout__ -- the original stdout; don't use!\n\ |
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357 __stderr__ -- the original stderr; don't use!\n\ |
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358 \n\ |
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359 Functions:\n\ |
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360 \n\ |
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361 exc_info() -- return thread-safe information about the current exception\n\ |
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362 exit() -- exit the interpreter by raising SystemExit\n\ |
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363 getrefcount() -- return the reference count for an object (plus one :-)\n\ |
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364 setcheckinterval() -- control how often the interpreter checks for events\n\ |
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365 setprofile() -- set the global profiling function\n\ |
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366 settrace() -- set the global debug tracing function\n\ |
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367 "; |
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368 |
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369 PyObject * |
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370 _PySys_Init() |
| 6 | 371 { |
| 5372 | 372 extern int fclose Py_PROTO((FILE *)); |
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373 PyObject *m, *v, *sysdict; |
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374 PyObject *sysin, *sysout, *syserr; |
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375 |
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376 m = Py_InitModule3("sys", sys_methods, sys_doc); |
| 5372 | 377 sysdict = PyModule_GetDict(m); |
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378 |
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379 sysin = PyFile_FromFile(stdin, "<stdin>", "r", NULL); |
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380 sysout = PyFile_FromFile(stdout, "<stdout>", "w", NULL); |
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381 syserr = PyFile_FromFile(stderr, "<stderr>", "w", NULL); |
| 5372 | 382 if (PyErr_Occurred()) |
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383 return NULL; |
| 5372 | 384 PyDict_SetItemString(sysdict, "stdin", sysin); |
| 385 PyDict_SetItemString(sysdict, "stdout", sysout); | |
| 386 PyDict_SetItemString(sysdict, "stderr", syserr); | |
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387 /* Make backup copies for cleanup */ |
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388 PyDict_SetItemString(sysdict, "__stdin__", sysin); |
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389 PyDict_SetItemString(sysdict, "__stdout__", sysout); |
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390 PyDict_SetItemString(sysdict, "__stderr__", syserr); |
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391 Py_XDECREF(sysin); |
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392 Py_XDECREF(sysout); |
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393 Py_XDECREF(syserr); |
| 5372 | 394 PyDict_SetItemString(sysdict, "version", |
| 395 v = PyString_FromString(Py_GetVersion())); | |
| 396 Py_XDECREF(v); | |
| 397 PyDict_SetItemString(sysdict, "copyright", | |
| 398 v = PyString_FromString(Py_GetCopyright())); | |
| 399 Py_XDECREF(v); | |
| 400 PyDict_SetItemString(sysdict, "platform", | |
| 401 v = PyString_FromString(Py_GetPlatform())); | |
| 402 Py_XDECREF(v); | |
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403 PyDict_SetItemString(sysdict, "executable", |
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404 v = PyString_FromString(Py_GetProgramFullPath())); |
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405 Py_XDECREF(v); |
| 5372 | 406 PyDict_SetItemString(sysdict, "prefix", |
| 407 v = PyString_FromString(Py_GetPrefix())); | |
| 408 Py_XDECREF(v); | |
| 409 PyDict_SetItemString(sysdict, "exec_prefix", | |
| 410 v = PyString_FromString(Py_GetExecPrefix())); | |
| 411 Py_XDECREF(v); | |
| 412 PyDict_SetItemString(sysdict, "maxint", | |
| 413 v = PyInt_FromLong(PyInt_GetMax())); | |
| 414 Py_XDECREF(v); | |
| 415 PyDict_SetItemString(sysdict, "builtin_module_names", | |
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416 v = list_builtin_module_names()); |
| 5372 | 417 Py_XDECREF(v); |
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418 #ifdef MS_COREDLL |
| 5372 | 419 PyDict_SetItemString(sysdict, "dllhandle", |
| 420 v = PyInt_FromLong((int)PyWin_DLLhModule)); | |
| 421 Py_XDECREF(v); | |
| 422 PyDict_SetItemString(sysdict, "winver", | |
|
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423 v = PyString_FromString(PyWin_DLLVersionString)); |
| 5372 | 424 Py_XDECREF(v); |
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425 #endif |
| 5372 | 426 if (PyErr_Occurred()) |
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427 return NULL; |
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428 return m; |
| 86 | 429 } |
| 430 | |
| 5372 | 431 static PyObject * |
| 86 | 432 makepathobject(path, delim) |
| 433 char *path; | |
| 434 int delim; | |
| 435 { | |
| 436 int i, n; | |
| 437 char *p; | |
| 5372 | 438 PyObject *v, *w; |
| 6 | 439 |
| 86 | 440 n = 1; |
| 441 p = path; | |
| 442 while ((p = strchr(p, delim)) != NULL) { | |
| 443 n++; | |
| 444 p++; | |
| 445 } | |
| 5372 | 446 v = PyList_New(n); |
| 86 | 447 if (v == NULL) |
| 448 return NULL; | |
| 449 for (i = 0; ; i++) { | |
| 450 p = strchr(path, delim); | |
| 451 if (p == NULL) | |
| 452 p = strchr(path, '\0'); /* End of string */ | |
| 5372 | 453 w = PyString_FromStringAndSize(path, (int) (p - path)); |
| 86 | 454 if (w == NULL) { |
| 5372 | 455 Py_DECREF(v); |
| 86 | 456 return NULL; |
| 457 } | |
| 5372 | 458 PyList_SetItem(v, i, w); |
| 86 | 459 if (*p == '\0') |
| 460 break; | |
| 461 path = p+1; | |
| 462 } | |
| 463 return v; | |
| 464 } | |
| 465 | |
| 466 void | |
| 5372 | 467 PySys_SetPath(path) |
| 86 | 468 char *path; |
| 469 { | |
| 5372 | 470 PyObject *v; |
| 86 | 471 if ((v = makepathobject(path, DELIM)) == NULL) |
| 5372 | 472 Py_FatalError("can't create sys.path"); |
| 473 if (PySys_SetObject("path", v) != 0) | |
| 474 Py_FatalError("can't assign sys.path"); | |
| 475 Py_DECREF(v); | |
|
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Empty all modules' symbol tables, so most circular references are
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476 } |
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|
477 |
| 5372 | 478 static PyObject * |
| 86 | 479 makeargvobject(argc, argv) |
| 480 int argc; | |
| 481 char **argv; | |
|
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482 { |
| 5372 | 483 PyObject *av; |
|
596
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Ensure that sys.argv[0] always exists (maybe as empty string).
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|
484 if (argc <= 0 || argv == NULL) { |
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|
485 /* Ensure at least one (empty) argument is seen */ |
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486 static char *empty_argv[1] = {""}; |
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|
487 argv = empty_argv; |
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|
488 argc = 1; |
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|
489 } |
| 5372 | 490 av = PyList_New(argc); |
| 86 | 491 if (av != NULL) { |
| 492 int i; | |
| 493 for (i = 0; i < argc; i++) { | |
| 5372 | 494 PyObject *v = PyString_FromString(argv[i]); |
| 86 | 495 if (v == NULL) { |
| 5372 | 496 Py_DECREF(av); |
| 86 | 497 av = NULL; |
| 498 break; | |
| 499 } | |
| 5372 | 500 PyList_SetItem(av, i, v); |
|
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501 } |
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|
502 } |
| 86 | 503 return av; |
| 6 | 504 } |
| 505 | |
| 506 void | |
| 5372 | 507 PySys_SetArgv(argc, argv) |
| 86 | 508 int argc; |
| 509 char **argv; | |
| 6 | 510 { |
| 5372 | 511 PyObject *av = makeargvobject(argc, argv); |
| 512 PyObject *path = PySys_GetObject("path"); | |
| 86 | 513 if (av == NULL) |
| 5372 | 514 Py_FatalError("no mem for sys.argv"); |
| 515 if (PySys_SetObject("argv", av) != 0) | |
| 516 Py_FatalError("can't assign sys.argv"); | |
|
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517 if (path != NULL) { |
|
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518 char *argv0 = argv[0]; |
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519 char *p = NULL; |
|
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520 int n = 0; |
| 5372 | 521 PyObject *a; |
|
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522 #ifdef HAVE_READLINK |
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523 char link[MAXPATHLEN+1]; |
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524 char argv0copy[2*MAXPATHLEN+1]; |
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525 int nr = 0; |
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526 if (argc > 0 && argv0 != NULL) |
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527 nr = readlink(argv0, link, MAXPATHLEN); |
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528 if (nr > 0) { |
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|
529 /* It's a symlink */ |
|
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|
530 link[nr] = '\0'; |
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|
531 if (link[0] == SEP) |
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|
532 argv0 = link; /* Link to absolute path */ |
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533 else if (strchr(link, SEP) == NULL) |
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|
534 ; /* Link without path */ |
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535 else { |
|
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|
536 /* Must join(dirname(argv0), link) */ |
|
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|
537 char *q = strrchr(argv0, SEP); |
|
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|
538 if (q == NULL) |
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|
539 argv0 = link; /* argv0 without path */ |
|
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540 else { |
|
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|
541 /* Must make a copy */ |
|
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|
542 strcpy(argv0copy, argv0); |
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|
543 q = strrchr(argv0copy, SEP); |
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|
544 strcpy(q+1, link); |
|
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545 argv0 = argv0copy; |
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|
546 } |
|
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|
547 } |
|
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|
548 } |
|
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|
549 #endif /* HAVE_READLINK */ |
|
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|
550 #if SEP == '\\' /* Special case for MS filename syntax */ |
|
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|
551 if (argc > 0 && argv0 != NULL) { |
|
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|
552 char *q; |
|
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|
553 p = strrchr(argv0, SEP); |
|
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|
554 /* Test for alternate separator */ |
|
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|
555 q = strrchr(p ? p : argv0, '/'); |
|
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|
556 if (q != NULL) |
|
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|
557 p = q; |
|
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|
558 if (p != NULL) { |
|
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|
559 n = p + 1 - argv0; |
|
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|
560 if (n > 1 && p[-1] != ':') |
|
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|
561 n--; /* Drop trailing separator */ |
|
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|
562 } |
|
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Changes to setpythonpath():
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|
563 } |
|
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|
564 #else /* All other filename syntaxes */ |
|
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|
565 if (argc > 0 && argv0 != NULL) |
|
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|
566 p = strrchr(argv0, SEP); |
|
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|
567 if (p != NULL) { |
|
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|
568 n = p + 1 - argv0; |
|
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|
569 #if SEP == '/' /* Special case for Unix filename syntax */ |
|
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|
570 if (n > 1) |
|
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|
571 n--; /* Drop trailing separator */ |
|
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|
572 #endif /* Unix */ |
|
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|
573 } |
|
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|
574 #endif /* All others */ |
| 5372 | 575 a = PyString_FromStringAndSize(argv0, n); |
|
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|
576 if (a == NULL) |
| 5372 | 577 Py_FatalError("no mem for sys.path insertion"); |
| 578 if (PyList_Insert(path, 0, a) < 0) | |
| 579 Py_FatalError("sys.path.insert(0) failed"); | |
| 580 Py_DECREF(a); | |
|
3806
93868c7a15c9
As a side effect of calling PySys_SetArgv (setpythonargv), the
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|
581 } |
| 5372 | 582 Py_DECREF(av); |
| 6 | 583 } |
|
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|
584 |
|
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|
585 |
|
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|
586 /* APIs to write to sys.stdout or sys.stderr using a printf-like interface. |
|
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|
587 Adapted from code submitted by Just van Rossum. |
|
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|
588 |
|
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|
589 PySys_WriteStdout(format, ...) |
|
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|
590 PySys_WriteStderr(format, ...) |
|
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|
591 |
|
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|
592 The first function writes to sys.stdout; the second to sys.stderr. When |
|
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|
593 there is a problem, they write to the real (C level) stdout or stderr; |
|
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|
594 no exceptions are raised (but a pending exception may be cleared when a |
|
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|
595 new exception is caught). |
|
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|
596 |
|
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|
597 Both take a printf-style format string as their first argument followed |
|
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|
598 by a variable length argument list determined by the format string. |
|
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|
599 |
|
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|
600 *** WARNING *** |
|
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|
601 |
|
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|
602 The format should limit the total size of the formatted output string to |
|
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|
603 1000 bytes. In particular, this means that no unrestricted "%s" formats |
|
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604 should occur; these should be limited using "%.<N>s where <N> is a |
|
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|
605 decimal number calculated so that <N> plus the maximum size of other |
|
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|
606 formatted text does not exceed 1000 bytes. Also watch out for "%f", |
|
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|
607 which can print hundreds of digits for very large numbers. |
|
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|
608 |
|
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|
609 */ |
|
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|
610 |
|
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|
611 static void |
|
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|
612 mywrite(name, fp, format, va) |
|
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|
613 char *name; |
|
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614 FILE *fp; |
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615 const char *format; |
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616 va_list va; |
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617 { |
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618 PyObject *file; |
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619 |
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620 file = PySys_GetObject(name); |
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621 if (file == NULL || PyFile_AsFile(file) == fp) |
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622 vfprintf(fp, format, va); |
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623 else { |
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624 char buffer[1001]; |
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625 vsprintf(buffer, format, va); |
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626 if (PyFile_WriteString(buffer, file) != 0) { |
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627 PyErr_Clear(); |
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628 fputs(buffer, fp); |
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629 } |
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630 } |
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631 } |
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632 |
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633 void |
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634 #ifdef HAVE_STDARG_PROTOTYPES |
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635 PySys_WriteStdout(const char *format, ...) |
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636 #else |
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637 PySys_WriteStdout(va_alist) |
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638 va_dcl |
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639 #endif |
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640 { |
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641 va_list va; |
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642 |
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643 #ifdef HAVE_STDARG_PROTOTYPES |
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644 va_start(va, format); |
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645 #else |
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646 char *format; |
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647 va_start(va); |
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648 format = va_arg(va, char *); |
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649 #endif |
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650 mywrite("stdout", stdout, format, va); |
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651 va_end(va); |
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652 } |
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653 |
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654 void |
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655 #ifdef HAVE_STDARG_PROTOTYPES |
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656 PySys_WriteStderr(const char *format, ...) |
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657 #else |
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658 PySys_WriteStderr(va_alist) |
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659 va_dcl |
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660 #endif |
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661 { |
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662 va_list va; |
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663 |
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664 #ifdef HAVE_STDARG_PROTOTYPES |
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665 va_start(va, format); |
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666 #else |
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667 char *format; |
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668 va_start(va); |
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669 format = va_arg(va, char *); |
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670 #endif |
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671 mywrite("stderr", stderr, format, va); |
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672 va_end(va); |
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673 } |