Mercurial > cpython-lru_cache-weakref
annotate Python/sysmodule.c @ 3326:1eab8495462f legacy-trunk
fix args options for setcheckinterval
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 12 Jan 1996 01:15:01 +0000 |
| parents | 54aa87b1ccee |
| children | 1dfc519ea3cb |
| 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 | |
| 7 Permission to use, copy, modify, and distribute this software and its | |
| 8 documentation for any purpose and without fee is hereby granted, | |
| 9 provided that the above copyright notice appear in all copies and that | |
| 10 both that copyright notice and this permission notice appear in | |
| 11 supporting documentation, and that the names of Stichting Mathematisch | |
| 12 Centrum or CWI not be used in advertising or publicity pertaining to | |
| 13 distribution of the software without specific, written prior permission. | |
| 14 | |
| 15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO | |
| 16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE | |
| 18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
| 21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 22 | |
| 23 ******************************************************************/ | |
| 24 | |
| 6 | 25 /* System module */ |
| 26 | |
| 27 /* | |
| 28 Various bits of information used by the interpreter are collected in | |
| 29 module 'sys'. | |
| 86 | 30 Function member: |
|
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31 - exit(sts): raise SystemExit |
| 6 | 32 Data members: |
| 33 - stdin, stdout, stderr: standard file objects | |
| 86 | 34 - modules: the table of modules (dictionary) |
| 6 | 35 - path: module search path (list of strings) |
| 86 | 36 - argv: script arguments (list of strings) |
| 37 - ps1, ps2: optional primary and secondary prompts (strings) | |
| 6 | 38 */ |
| 39 | |
| 86 | 40 #include "allobjects.h" |
| 41 | |
| 42 #include "sysmodule.h" | |
| 43 #include "import.h" | |
| 44 #include "modsupport.h" | |
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45 #include "osdefs.h" |
| 86 | 46 |
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47 object *sys_trace, *sys_profile; |
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48 int sys_checkinterval = 10; |
| 6 | 49 |
| 50 static object *sysdict; | |
| 51 | |
| 52 object * | |
| 53 sysget(name) | |
| 54 char *name; | |
| 55 { | |
| 56 return dictlookup(sysdict, name); | |
| 57 } | |
| 58 | |
| 59 FILE * | |
| 60 sysgetfile(name, def) | |
| 61 char *name; | |
| 62 FILE *def; | |
| 63 { | |
| 64 FILE *fp = NULL; | |
| 65 object *v = sysget(name); | |
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66 if (v != NULL && is_fileobject(v)) |
| 6 | 67 fp = getfilefile(v); |
| 68 if (fp == NULL) | |
| 69 fp = def; | |
| 70 return fp; | |
| 71 } | |
| 72 | |
| 73 int | |
| 74 sysset(name, v) | |
| 75 char *name; | |
| 76 object *v; | |
| 77 { | |
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78 if (v == NULL) { |
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79 if (dictlookup(sysdict, name) == NULL) |
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80 return 0; |
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81 else |
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82 return dictremove(sysdict, name); |
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83 } |
| 6 | 84 else |
| 85 return dictinsert(sysdict, name, v); | |
| 86 } | |
| 87 | |
| 88 static object * | |
| 89 sys_exit(self, args) | |
| 90 object *self; | |
| 91 object *args; | |
| 92 { | |
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93 /* Raise SystemExit so callers may catch it or clean up. */ |
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94 err_setval(SystemExit, args); |
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95 return NULL; |
| 6 | 96 } |
| 97 | |
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98 static object * |
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99 sys_settrace(self, args) |
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100 object *self; |
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101 object *args; |
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102 { |
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103 if (args == None) |
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104 args = NULL; |
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105 else |
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106 XINCREF(args); |
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107 XDECREF(sys_trace); |
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108 sys_trace = args; |
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109 INCREF(None); |
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110 return None; |
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111 } |
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112 |
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113 static object * |
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114 sys_setprofile(self, args) |
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115 object *self; |
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116 object *args; |
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117 { |
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118 if (args == None) |
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119 args = NULL; |
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120 else |
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121 XINCREF(args); |
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122 XDECREF(sys_profile); |
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123 sys_profile = args; |
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124 INCREF(None); |
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125 return None; |
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126 } |
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127 |
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sys.check_interval=x -> sys.setcheckinterval(x)
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128 static object * |
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sys.check_interval=x -> sys.setcheckinterval(x)
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129 sys_setcheckinterval(self, args) |
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sys.check_interval=x -> sys.setcheckinterval(x)
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130 object *self; |
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sys.check_interval=x -> sys.setcheckinterval(x)
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131 object *args; |
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sys.check_interval=x -> sys.setcheckinterval(x)
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132 { |
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sys.check_interval=x -> sys.setcheckinterval(x)
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133 if (!newgetargs(args, "i", &sys_checkinterval)) |
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sys.check_interval=x -> sys.setcheckinterval(x)
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134 return NULL; |
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sys.check_interval=x -> sys.setcheckinterval(x)
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135 INCREF(None); |
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136 return None; |
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sys.check_interval=x -> sys.setcheckinterval(x)
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137 } |
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sys.check_interval=x -> sys.setcheckinterval(x)
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138 |
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139 #ifdef USE_MALLOPT |
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140 /* Link with -lmalloc (or -lmpc) on an SGI */ |
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141 #include <malloc.h> |
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142 |
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143 static object * |
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144 sys_mdebug(self, args) |
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145 object *self; |
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146 object *args; |
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147 { |
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148 int flag; |
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149 if (!getargs(args, "i", &flag)) |
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150 return NULL; |
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151 mallopt(M_DEBUG, flag); |
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152 INCREF(None); |
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153 return None; |
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154 } |
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155 #endif /* USE_MALLOPT */ |
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156 |
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157 static object * |
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158 sys_getrefcount(self, args) |
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159 object *self; |
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160 object *args; |
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161 { |
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162 object *arg; |
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163 if (!getargs(args, "O", &arg)) |
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164 return NULL; |
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165 return newintobject((long) arg->ob_refcnt); |
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166 } |
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167 |
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168 #ifdef COUNT_ALLOCS |
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169 static PyObject * |
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170 sys_getcounts(self, args) |
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171 PyObject *self, *args; |
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172 { |
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173 extern PyObject *get_counts Py_PROTO((void)); |
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174 |
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175 if (!PyArg_Parse(args, "")) |
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176 return NULL; |
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177 return get_counts(); |
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178 } |
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179 #endif |
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180 |
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181 #ifdef TRACE_REFS |
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182 extern PyObject *getobjects Py_PROTO((PyObject *, PyObject *)); |
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183 #endif |
| 86 | 184 static struct methodlist sys_methods[] = { |
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185 {"exit", sys_exit, 0}, |
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186 {"getrefcount", sys_getrefcount, 0}, |
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187 #ifdef COUNT_ALLOCS |
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188 {"getcounts", sys_getcounts, 0}, |
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189 #endif |
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190 #ifdef TRACE_REFS |
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191 {"getobjects", getobjects, 1}, |
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192 #endif |
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193 #ifdef USE_MALLOPT |
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194 {"mdebug", sys_mdebug, 0}, |
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195 #endif |
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196 {"setprofile", sys_setprofile, 0}, |
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197 {"settrace", sys_settrace, 0}, |
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198 {"setcheckinterval", sys_setcheckinterval, 1}, |
| 86 | 199 {NULL, NULL} /* sentinel */ |
| 200 }; | |
| 201 | |
| 6 | 202 static object *sysin, *sysout, *syserr; |
| 203 | |
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204 static object * |
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205 list_builtin_module_names() |
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206 { |
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207 object *list = newlistobject(0); |
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208 int i; |
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209 if (list == NULL) |
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210 return NULL; |
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211 for (i = 0; inittab[i].name != NULL; i++) { |
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212 object *name = newstringobject(inittab[i].name); |
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213 if (name == NULL) |
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214 break; |
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215 addlistitem(list, name); |
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216 DECREF(name); |
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217 } |
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218 if (sortlist(list) != 0) { |
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219 DECREF(list); |
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220 list = NULL; |
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221 } |
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222 return list; |
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223 } |
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224 |
| 6 | 225 void |
| 86 | 226 initsys() |
| 6 | 227 { |
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228 extern long getmaxint PROTO((void)); |
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229 extern char *getversion PROTO((void)); |
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230 extern char *getcopyright PROTO((void)); |
| 2810 | 231 extern char *getplatform PROTO((void)); |
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232 extern int fclose PROTO((FILE *)); |
| 86 | 233 object *m = initmodule("sys", sys_methods); |
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234 object *v; |
| 86 | 235 sysdict = getmoduledict(m); |
| 236 INCREF(sysdict); | |
| 6 | 237 /* NB keep an extra ref to the std files to avoid closing them |
| 238 when the user deletes them */ | |
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239 sysin = newopenfileobject(stdin, "<stdin>", "r", fclose); |
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240 sysout = newopenfileobject(stdout, "<stdout>", "w", fclose); |
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241 syserr = newopenfileobject(stderr, "<stderr>", "w", fclose); |
| 6 | 242 if (err_occurred()) |
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243 fatal("can't initialize sys.std{in,out,err}"); |
| 6 | 244 dictinsert(sysdict, "stdin", sysin); |
| 245 dictinsert(sysdict, "stdout", sysout); | |
| 246 dictinsert(sysdict, "stderr", syserr); | |
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247 dictinsert(sysdict, "version", v = newstringobject(getversion())); |
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248 XDECREF(v); |
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249 dictinsert(sysdict, "copyright", v = newstringobject(getcopyright())); |
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250 XDECREF(v); |
| 2810 | 251 dictinsert(sysdict, "platform", v = newstringobject(getplatform())); |
| 252 XDECREF(v); | |
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253 dictinsert(sysdict, "maxint", v = newintobject(getmaxint())); |
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254 XDECREF(v); |
| 86 | 255 dictinsert(sysdict, "modules", get_modules()); |
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256 dictinsert(sysdict, "builtin_module_names", |
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257 v = list_builtin_module_names()); |
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258 XDECREF(v); |
| 6 | 259 if (err_occurred()) |
| 260 fatal("can't insert sys.* objects in sys dict"); | |
| 86 | 261 } |
| 262 | |
| 263 static object * | |
| 264 makepathobject(path, delim) | |
| 265 char *path; | |
| 266 int delim; | |
| 267 { | |
| 268 int i, n; | |
| 269 char *p; | |
| 270 object *v, *w; | |
| 6 | 271 |
| 86 | 272 n = 1; |
| 273 p = path; | |
| 274 while ((p = strchr(p, delim)) != NULL) { | |
| 275 n++; | |
| 276 p++; | |
| 277 } | |
| 278 v = newlistobject(n); | |
| 279 if (v == NULL) | |
| 280 return NULL; | |
| 281 for (i = 0; ; i++) { | |
| 282 p = strchr(path, delim); | |
| 283 if (p == NULL) | |
| 284 p = strchr(path, '\0'); /* End of string */ | |
| 285 w = newsizedstringobject(path, (int) (p - path)); | |
| 286 if (w == NULL) { | |
| 287 DECREF(v); | |
| 288 return NULL; | |
| 289 } | |
| 290 setlistitem(v, i, w); | |
| 291 if (*p == '\0') | |
| 292 break; | |
| 293 path = p+1; | |
| 294 } | |
| 295 return v; | |
| 296 } | |
| 297 | |
| 298 void | |
| 299 setpythonpath(path) | |
| 300 char *path; | |
| 301 { | |
| 302 object *v; | |
| 303 if ((v = makepathobject(path, DELIM)) == NULL) | |
| 304 fatal("can't create sys.path"); | |
| 305 if (sysset("path", v) != 0) | |
| 306 fatal("can't assign sys.path"); | |
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307 DECREF(v); |
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308 } |
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309 |
| 86 | 310 static object * |
| 311 makeargvobject(argc, argv) | |
| 312 int argc; | |
| 313 char **argv; | |
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314 { |
| 86 | 315 object *av; |
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316 if (argc <= 0 || argv == NULL) { |
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317 /* Ensure at least one (empty) argument is seen */ |
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318 static char *empty_argv[1] = {""}; |
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319 argv = empty_argv; |
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320 argc = 1; |
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321 } |
| 86 | 322 av = newlistobject(argc); |
| 323 if (av != NULL) { | |
| 324 int i; | |
| 325 for (i = 0; i < argc; i++) { | |
| 326 object *v = newstringobject(argv[i]); | |
| 327 if (v == NULL) { | |
| 328 DECREF(av); | |
| 329 av = NULL; | |
| 330 break; | |
| 331 } | |
| 332 setlistitem(av, i, v); | |
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333 } |
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334 } |
| 86 | 335 return av; |
| 6 | 336 } |
| 337 | |
| 338 void | |
| 86 | 339 setpythonargv(argc, argv) |
| 340 int argc; | |
| 341 char **argv; | |
| 6 | 342 { |
| 86 | 343 object *av = makeargvobject(argc, argv); |
| 344 if (av == NULL) | |
| 345 fatal("no mem for sys.argv"); | |
| 346 if (sysset("argv", av) != 0) | |
| 347 fatal("can't assign sys.argv"); | |
| 348 DECREF(av); | |
| 6 | 349 } |