annotate Modules/main.c @ 80661:94de77bd0b4b 2.7

Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 6a79e3beb854
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Python interpreter main program */
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2
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3 #include "Python.h"
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4 #include "osdefs.h"
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5 #include "code.h" /* For CO_FUTURE_DIVISION */
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6 #include "import.h"
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7
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8 #ifdef __VMS
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9 #include <unixlib.h>
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10 #endif
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11
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12 #if defined(MS_WINDOWS) || defined(__CYGWIN__)
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13 #ifdef HAVE_FCNTL_H
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14 #include <fcntl.h>
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15 #endif
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16 #endif
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17
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18 #if (defined(PYOS_OS2) && !defined(PYCC_GCC)) || defined(MS_WINDOWS)
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19 #define PYTHONHOMEHELP "<prefix>\\lib"
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20 #else
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21 #if defined(PYOS_OS2) && defined(PYCC_GCC)
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22 #define PYTHONHOMEHELP "<prefix>/Lib"
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23 #else
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24 #define PYTHONHOMEHELP "<prefix>/pythonX.X"
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25 #endif
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26 #endif
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27
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28 #include "pygetopt.h"
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29
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30 #define COPYRIGHT \
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31 "Type \"help\", \"copyright\", \"credits\" or \"license\" " \
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32 "for more information."
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33
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34 #ifdef __cplusplus
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35 extern "C" {
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36 #endif
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37
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38 /* For Py_GetArgcArgv(); set by main() */
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39 static char **orig_argv;
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40 static int orig_argc;
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41
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42 /* command line options */
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43 #define BASE_OPTS "3bBc:dEhiJm:OQ:RsStuUvVW:xX?"
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44
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45 #ifndef RISCOS
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46 #define PROGRAM_OPTS BASE_OPTS
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47 #else /*RISCOS*/
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48 /* extra option saying that we are running under a special task window
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49 frontend; especially my_readline will behave different */
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50 #define PROGRAM_OPTS BASE_OPTS "w"
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51 /* corresponding flag */
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52 extern int Py_RISCOSWimpFlag;
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53 #endif /*RISCOS*/
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54
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55 /* Short usage message (with %s for argv0) */
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56 static char *usage_line =
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57 "usage: %s [option] ... [-c cmd | -m mod | file | -] [arg] ...\n";
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58
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59 /* Long usage message, split into parts < 512 bytes */
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60 static char *usage_1 = "\
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61 Options and arguments (and corresponding environment variables):\n\
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62 -B : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x\n\
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63 -c cmd : program passed in as string (terminates option list)\n\
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64 -d : debug output from parser; also PYTHONDEBUG=x\n\
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65 -E : ignore PYTHON* environment variables (such as PYTHONPATH)\n\
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66 -h : print this help message and exit (also --help)\n\
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67 -i : inspect interactively after running script; forces a prompt even\n\
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68 ";
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69 static char *usage_2 = "\
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70 if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\
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71 -m mod : run library module as a script (terminates option list)\n\
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72 -O : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x\n\
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73 -OO : remove doc-strings in addition to the -O optimizations\n\
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74 -R : use a pseudo-random salt to make hash() values of various types be\n\
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75 unpredictable between separate invocations of the interpreter, as\n\
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76 a defense against denial-of-service attacks\n\
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77 -Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew\n\
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78 -s : don't add user site directory to sys.path; also PYTHONNOUSERSITE\n\
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79 -S : don't imply 'import site' on initialization\n\
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80 -t : issue warnings about inconsistent tab usage (-tt: issue errors)\n\
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81 ";
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82 static char *usage_3 = "\
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83 -u : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x\n\
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84 see man page for details on internal buffering relating to '-u'\n\
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85 -v : verbose (trace import statements); also PYTHONVERBOSE=x\n\
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86 can be supplied multiple times to increase verbosity\n\
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87 -V : print the Python version number and exit (also --version)\n\
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88 -W arg : warning control; arg is action:message:category:module:lineno\n\
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89 also PYTHONWARNINGS=arg\n\
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90 -x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\
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91 ";
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92 static char *usage_4 = "\
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93 -3 : warn about Python 3.x incompatibilities that 2to3 cannot trivially fix\n\
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94 file : program read from script file\n\
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95 - : program read from stdin (default; interactive mode if a tty)\n\
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96 arg ...: arguments passed to program in sys.argv[1:]\n\n\
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97 Other environment variables:\n\
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98 PYTHONSTARTUP: file executed on interactive startup (no default)\n\
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99 PYTHONPATH : '%c'-separated list of directories prefixed to the\n\
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100 default module search path. The result is sys.path.\n\
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101 ";
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102 static char *usage_5 = "\
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103 PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n\
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104 The default module search path uses %s.\n\
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105 PYTHONCASEOK : ignore case in 'import' statements (Windows).\n\
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106 PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n\
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107 ";
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108 static char *usage_6 = "\
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109 PYTHONHASHSEED: if this variable is set to 'random', the effect is the same\n\
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110 as specifying the -R option: a random value is used to seed the hashes of\n\
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111 str, bytes and datetime objects. It can also be set to an integer\n\
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112 in the range [0,4294967295] to get hash values with a predictable seed.\n\
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113 ";
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115
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116 static int
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117 usage(int exitcode, char* program)
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118 {
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119 FILE *f = exitcode ? stderr : stdout;
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120
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121 fprintf(f, usage_line, program);
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122 if (exitcode)
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123 fprintf(f, "Try `python -h' for more information.\n");
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124 else {
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125 fputs(usage_1, f);
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126 fputs(usage_2, f);
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127 fputs(usage_3, f);
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128 fprintf(f, usage_4, DELIM);
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129 fprintf(f, usage_5, DELIM, PYTHONHOMEHELP);
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130 fputs(usage_6, f);
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131 }
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132 #if defined(__VMS)
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133 if (exitcode == 0) {
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134 /* suppress 'error' message */
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135 return 1;
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136 }
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137 else {
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138 /* STS$M_INHIB_MSG + SS$_ABORT */
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139 return 0x1000002c;
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140 }
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141 #else
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142 return exitcode;
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143 #endif
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144 /*NOTREACHED*/
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145 }
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146
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147 static void RunStartupFile(PyCompilerFlags *cf)
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148 {
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149 char *startup = Py_GETENV("PYTHONSTARTUP");
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150 if (startup != NULL && startup[0] != '\0') {
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151 FILE *fp = fopen(startup, "r");
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152 if (fp != NULL) {
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153 (void) PyRun_SimpleFileExFlags(fp, startup, 0, cf);
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154 PyErr_Clear();
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155 fclose(fp);
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156 } else {
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157 int save_errno;
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158 save_errno = errno;
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159 PySys_WriteStderr("Could not open PYTHONSTARTUP\n");
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160 errno = save_errno;
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161 PyErr_SetFromErrnoWithFilename(PyExc_IOError,
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162 startup);
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163 PyErr_Print();
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164 PyErr_Clear();
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165 }
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166 }
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167 }
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168
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169
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170 static int RunModule(char *module, int set_argv0)
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171 {
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172 PyObject *runpy, *runmodule, *runargs, *result;
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173 runpy = PyImport_ImportModule("runpy");
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174 if (runpy == NULL) {
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175 fprintf(stderr, "Could not import runpy module\n");
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176 return -1;
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177 }
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178 runmodule = PyObject_GetAttrString(runpy, "_run_module_as_main");
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179 if (runmodule == NULL) {
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180 fprintf(stderr, "Could not access runpy._run_module_as_main\n");
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181 Py_DECREF(runpy);
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182 return -1;
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183 }
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184 runargs = Py_BuildValue("(si)", module, set_argv0);
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185 if (runargs == NULL) {
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186 fprintf(stderr,
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187 "Could not create arguments for runpy._run_module_as_main\n");
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188 Py_DECREF(runpy);
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189 Py_DECREF(runmodule);
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190 return -1;
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191 }
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192 result = PyObject_Call(runmodule, runargs, NULL);
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193 if (result == NULL) {
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194 PyErr_Print();
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195 }
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196 Py_DECREF(runpy);
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197 Py_DECREF(runmodule);
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198 Py_DECREF(runargs);
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199 if (result == NULL) {
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200 return -1;
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201 }
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202 Py_DECREF(result);
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203 return 0;
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204 }
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205
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206 static int RunMainFromImporter(char *filename)
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207 {
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208 PyObject *argv0 = NULL, *importer = NULL;
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209
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210 if ((argv0 = PyString_FromString(filename)) &&
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211 (importer = PyImport_GetImporter(argv0)) &&
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212 (importer->ob_type != &PyNullImporter_Type))
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213 {
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214 /* argv0 is usable as an import source, so
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215 put it in sys.path[0] and import __main__ */
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216 PyObject *sys_path = NULL;
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217 if ((sys_path = PySys_GetObject("path")) &&
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218 !PyList_SetItem(sys_path, 0, argv0))
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219 {
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220 Py_INCREF(argv0);
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221 Py_DECREF(importer);
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222 sys_path = NULL;
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223 return RunModule("__main__", 0) != 0;
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224 }
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225 }
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226 Py_XDECREF(argv0);
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227 Py_XDECREF(importer);
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228 if (PyErr_Occurred()) {
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229 PyErr_Print();
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230 return 1;
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231 }
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232 return -1;
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233 }
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234
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235
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236 /* Main program */
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237
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238 int
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239 Py_Main(int argc, char **argv)
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240 {
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241 int c;
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242 int sts;
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243 char *command = NULL;
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244 char *filename = NULL;
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245 char *module = NULL;
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246 FILE *fp = stdin;
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247 char *p;
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248 int unbuffered = 0;
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249 int skipfirstline = 0;
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250 int stdin_is_interactive = 0;
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251 int help = 0;
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252 int version = 0;
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253 int saw_unbuffered_flag = 0;
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254 PyCompilerFlags cf;
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255
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256 cf.cf_flags = 0;
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257
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258 orig_argc = argc; /* For Py_GetArgcArgv() */
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259 orig_argv = argv;
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260
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261 #ifdef RISCOS
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262 Py_RISCOSWimpFlag = 0;
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263 #endif
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264
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265 /* Hash randomization needed early for all string operations
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266 (including -W and -X options). */
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267 _PyOS_opterr = 0; /* prevent printing the error in 1st pass */
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268 while ((c = _PyOS_GetOpt(argc, argv, PROGRAM_OPTS)) != EOF) {
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269 if (c == 'm' || c == 'c') {
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270 /* -c / -m is the last option: following arguments are
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271 not interpreter options. */
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272 break;
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273 }
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274 switch (c) {
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275 case 'E':
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276 Py_IgnoreEnvironmentFlag++;
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277 break;
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278 case 'R':
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279 Py_HashRandomizationFlag++;
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280 break;
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281 }
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282 }
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283 /* The variable is only tested for existence here; _PyRandom_Init will
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284 check its value further. */
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285 if (!Py_HashRandomizationFlag &&
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286 (p = Py_GETENV("PYTHONHASHSEED")) && *p != '\0')
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287 Py_HashRandomizationFlag = 1;
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288
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289 _PyRandom_Init();
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290
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291 PySys_ResetWarnOptions();
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292 _PyOS_ResetGetOpt();
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293
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294 while ((c = _PyOS_GetOpt(argc, argv, PROGRAM_OPTS)) != EOF) {
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295 if (c == 'c') {
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296 /* -c is the last option; following arguments
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297 that look like options are left for the
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298 command to interpret. */
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299 command = (char *)malloc(strlen(_PyOS_optarg) + 2);
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300 if (command == NULL)
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301 Py_FatalError(
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302 "not enough memory to copy -c argument");
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303 strcpy(command, _PyOS_optarg);
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304 strcat(command, "\n");
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305 break;
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306 }
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307
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308 if (c == 'm') {
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309 /* -m is the last option; following arguments
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310 that look like options are left for the
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311 module to interpret. */
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312 module = (char *)malloc(strlen(_PyOS_optarg) + 2);
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313 if (module == NULL)
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314 Py_FatalError(
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315 "not enough memory to copy -m argument");
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316 strcpy(module, _PyOS_optarg);
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317 break;
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318 }
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319
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320 switch (c) {
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321 case 'b':
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322 Py_BytesWarningFlag++;
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323 break;
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324
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325 case 'd':
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326 Py_DebugFlag++;
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327 break;
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328
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329 case '3':
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330 Py_Py3kWarningFlag++;
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331 if (!Py_DivisionWarningFlag)
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332 Py_DivisionWarningFlag = 1;
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333 break;
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334
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335 case 'Q':
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336 if (strcmp(_PyOS_optarg, "old") == 0) {
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337 Py_DivisionWarningFlag = 0;
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338 break;
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339 }
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340 if (strcmp(_PyOS_optarg, "warn") == 0) {
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341 Py_DivisionWarningFlag = 1;
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342 break;
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343 }
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344 if (strcmp(_PyOS_optarg, "warnall") == 0) {
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345 Py_DivisionWarningFlag = 2;
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346 break;
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347 }
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348 if (strcmp(_PyOS_optarg, "new") == 0) {
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349 /* This only affects __main__ */
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350 cf.cf_flags |= CO_FUTURE_DIVISION;
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351 /* And this tells the eval loop to treat
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352 BINARY_DIVIDE as BINARY_TRUE_DIVIDE */
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353 _Py_QnewFlag = 1;
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354 break;
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355 }
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356 fprintf(stderr,
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357 "-Q option should be `-Qold', "
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358 "`-Qwarn', `-Qwarnall', or `-Qnew' only\n");
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359 return usage(2, argv[0]);
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360 /* NOTREACHED */
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361
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362 case 'i':
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363 Py_InspectFlag++;
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364 Py_InteractiveFlag++;
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365 break;
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366
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367 /* case 'J': reserved for Jython */
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368
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369 case 'O':
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370 Py_OptimizeFlag++;
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371 break;
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372
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373 case 'B':
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374 Py_DontWriteBytecodeFlag++;
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375 break;
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376
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377 case 's':
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378 Py_NoUserSiteDirectory++;
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379 break;
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380
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381 case 'S':
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382 Py_NoSiteFlag++;
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383 break;
6203
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384
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385 case 'E':
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386 /* Already handled above */
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387 break;
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388
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389 case 't':
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390 Py_TabcheckFlag++;
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391 break;
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392
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393 case 'u':
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394 unbuffered++;
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395 saw_unbuffered_flag = 1;
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396 break;
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397
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398 case 'v':
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399 Py_VerboseFlag++;
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400 break;
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401
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402 #ifdef RISCOS
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403 case 'w':
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404 Py_RISCOSWimpFlag = 1;
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405 break;
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406 #endif
4baa5a955532 RISCOS changes by dschwertberger.
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407
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408 case 'x':
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409 skipfirstline = 1;
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410 break;
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411
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412 /* case 'X': reserved for implementation-specific arguments */
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413
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414 case 'U':
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415 Py_UnicodeFlag++;
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416 break;
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417 case 'h':
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418 case '?':
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419 help++;
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420 break;
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421 case 'V':
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422 version++;
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423 break;
12537
7cc3dd7cd31a Marc-Andre Lemburg:
Guido van Rossum <guido@python.org>
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424
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425 case 'W':
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426 PySys_AddWarnOption(_PyOS_optarg);
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427 break;
15593
9694909dbb0a Add the -W option.
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428
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429 case 'R':
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430 /* Already handled above */
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Barry Warsaw <barry@python.org>
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431 break;
6b7704fe1be1 - Issue #13703: oCERT-2011-003: add -R command-line option and PYTHONHASHSEED
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432
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433 /* This space reserved for other options */
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434
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435 default:
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436 return usage(2, argv[0]);
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437 /*NOTREACHED*/
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438
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439 }
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440 }
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parents: 18692
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441
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442 if (help)
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443 return usage(0, argv[0]);
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444
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445 if (version) {
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446 fprintf(stderr, "Python %s\n", PY_VERSION);
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447 return 0;
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448 }
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449
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450 if (Py_Py3kWarningFlag && !Py_TabcheckFlag)
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451 /* -3 implies -t (but not -tt) */
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452 Py_TabcheckFlag = 1;
53083
ad3f3d304963 #5704: let python -3 imply -t as well.
Georg Brandl <georg@python.org>
parents: 51711
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453
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454 if (!Py_InspectFlag &&
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455 (p = Py_GETENV("PYTHONINSPECT")) && *p != '\0')
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456 Py_InspectFlag = 1;
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457 if (!saw_unbuffered_flag &&
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458 (p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0')
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459 unbuffered = 1;
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460
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461 if (!Py_NoUserSiteDirectory &&
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462 (p = Py_GETENV("PYTHONNOUSERSITE")) && *p != '\0')
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463 Py_NoUserSiteDirectory = 1;
46698
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Christian Heimes <christian@cheimes.de>
parents: 46435
diff changeset
464
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465 if ((p = Py_GETENV("PYTHONWARNINGS")) && *p != '\0') {
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466 char *buf, *warning;
60484
f34cb501f8f7 fix PYTHONWARNINGS handling to not modify the original env value and improve
Philip Jenvey <pjenvey@underboss.org>
parents: 60433
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467
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468 buf = (char *)malloc(strlen(p) + 1);
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469 if (buf == NULL)
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470 Py_FatalError(
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471 "not enough memory to copy PYTHONWARNINGS");
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472 strcpy(buf, p);
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473 for (warning = strtok(buf, ",");
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474 warning != NULL;
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475 warning = strtok(NULL, ","))
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476 PySys_AddWarnOption(warning);
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477 free(buf);
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478 }
60433
c0957dada5c2 #7301: add the environment variable $PYTHONWARNINGS to supplement the -W
Philip Jenvey <pjenvey@underboss.org>
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479
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480 if (command == NULL && module == NULL && _PyOS_optind < argc &&
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481 strcmp(argv[_PyOS_optind], "-") != 0)
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482 {
28169
bc2d07230934 Patch #696645: Remove VMS code with uncertain authorship.
Martin v. Löwis <martin@v.loewis.de>
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483 #ifdef __VMS
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484 filename = decc$translate_vms(argv[_PyOS_optind]);
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485 if (filename == (char *)0 || filename == (char *)-1)
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486 filename = argv[_PyOS_optind];
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Martin v. Löwis <martin@v.loewis.de>
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487
bc2d07230934 Patch #696645: Remove VMS code with uncertain authorship.
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parents: 26764
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488 #else
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489 filename = argv[_PyOS_optind];
33188
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Martin v. Löwis <martin@v.loewis.de>
parents: 31606
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490 #endif
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491 }
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0bbf97861cd9 My version of Lee Busby's patches to make '-i' pretend stdin is a tty
Guido van Rossum <guido@python.org>
parents: 5000
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492
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493 stdin_is_interactive = Py_FdIsInteractive(stdin, (char *)0);
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Guido van Rossum <guido@python.org>
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494
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495 if (unbuffered) {
24695
a989a2eaa2ac On Cygwin, put stdin, stderr, and stdout in binary mode when the -u
Sjoerd Mullender <sjoerd@acm.org>
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496 #if defined(MS_WINDOWS) || defined(__CYGWIN__)
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497 _setmode(fileno(stdin), O_BINARY);
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498 _setmode(fileno(stdout), O_BINARY);
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6b61912d5f35 On Windows, -u implies binary mode for stdin/stdout
Guido van Rossum <guido@python.org>
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499 #endif
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500 #ifdef HAVE_SETVBUF
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501 setvbuf(stdin, (char *)NULL, _IONBF, BUFSIZ);
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502 setvbuf(stdout, (char *)NULL, _IONBF, BUFSIZ);
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503 setvbuf(stderr, (char *)NULL, _IONBF, BUFSIZ);
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504 #else /* !HAVE_SETVBUF */
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505 setbuf(stdin, (char *)NULL);
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506 setbuf(stdout, (char *)NULL);
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507 setbuf(stderr, (char *)NULL);
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508 #endif /* !HAVE_SETVBUF */
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509 }
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510 else if (Py_InteractiveFlag) {
5320
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Guido van Rossum <guido@python.org>
parents: 5319
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511 #ifdef MS_WINDOWS
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512 /* Doesn't have to have line-buffered -- use unbuffered */
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513 /* Any set[v]buf(stdin, ...) screws up Tkinter :-( */
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514 setvbuf(stdout, (char *)NULL, _IONBF, BUFSIZ);
7571
968aaba281c5 Don't use setvbuf unless HAVE_SETVBUF is defined.
Guido van Rossum <guido@python.org>
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diff changeset
515 #else /* !MS_WINDOWS */
968aaba281c5 Don't use setvbuf unless HAVE_SETVBUF is defined.
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516 #ifdef HAVE_SETVBUF
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517 setvbuf(stdin, (char *)NULL, _IOLBF, BUFSIZ);
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518 setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ);
7571
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Guido van Rossum <guido@python.org>
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diff changeset
519 #endif /* HAVE_SETVBUF */
968aaba281c5 Don't use setvbuf unless HAVE_SETVBUF is defined.
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diff changeset
520 #endif /* !MS_WINDOWS */
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521 /* Leave stderr alone - it should be unbuffered anyway. */
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522 }
26550
b9c912e2c3c0 Patch #614055: Support OpenVMS.
Martin v. Löwis <martin@v.loewis.de>
parents: 25826
diff changeset
523 #ifdef __VMS
61465
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524 else {
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525 setvbuf (stdout, (char *)NULL, _IOLBF, BUFSIZ);
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526 }
26550
b9c912e2c3c0 Patch #614055: Support OpenVMS.
Martin v. Löwis <martin@v.loewis.de>
parents: 25826
diff changeset
527 #endif /* __VMS */
2896
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Guido van Rossum <guido@python.org>
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528
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Just van Rossum <just@letterror.com>
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529 #ifdef __APPLE__
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530 /* On MacOS X, when the Python interpreter is embedded in an
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531 application bundle, it gets executed by a bootstrapping script
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532 that does os.execve() with an argv[0] that's different from the
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533 actual Python executable. This is needed to keep the Finder happy,
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534 or rather, to work around Apple's overly strict requirements of
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535 the process name. However, we still need a usable sys.executable,
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536 so the actual executable path is passed in an environment variable.
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537 See Lib/plat-mac/bundlebuiler.py for details about the bootstrap
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538 script. */
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539 if ((p = Py_GETENV("PYTHONEXECUTABLE")) && *p != '\0')
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540 Py_SetProgramName(p);
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541 else
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542 Py_SetProgramName(argv[0]);
28175
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Just van Rossum <just@letterror.com>
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543 #else
61465
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544 Py_SetProgramName(argv[0]);
28176
48a5113dfef9 An #endif was missing in Just's patch. Added.
Jack Jansen <jack.jansen@cwi.nl>
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diff changeset
545 #endif
61465
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546 Py_Initialize();
5851
edaf1cb63dc0 This is no longer the real main program; it now defines Py_Main(), so
Guido van Rossum <guido@python.org>
parents: 5547
diff changeset
547
61465
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548 if (Py_VerboseFlag ||
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549 (command == NULL && filename == NULL && module == NULL && stdin_is_interactive)) {
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550 fprintf(stderr, "Python %s on %s\n",
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551 Py_GetVersion(), Py_GetPlatform());
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552 if (!Py_NoSiteFlag)
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553 fprintf(stderr, "%s\n", COPYRIGHT);
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554 }
19633
c0a44829bcd5 Add warning mode for classic division, almost exactly as specified in
Guido van Rossum <guido@python.org>
parents: 18808
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555
61465
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556 if (command != NULL) {
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557 /* Backup _PyOS_optind and force sys.argv[0] = '-c' */
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558 _PyOS_optind--;
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559 argv[_PyOS_optind] = "-c";
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560 }
5851
edaf1cb63dc0 This is no longer the real main program; it now defines Py_Main(), so
Guido van Rossum <guido@python.org>
parents: 5547
diff changeset
561
61465
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562 if (module != NULL) {
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diff changeset
563 /* Backup _PyOS_optind and force sys.argv[0] = '-c'
62313
8f137a5c413c Revert r80580 due to some unintended side effects. See issue #8202 for details.
Nick Coghlan <ncoghlan@gmail.com>
parents: 61463
diff changeset
564 so that PySys_SetArgv correctly sets sys.path[0] to ''
8f137a5c413c Revert r80580 due to some unintended side effects. See issue #8202 for details.
Nick Coghlan <ncoghlan@gmail.com>
parents: 61463
diff changeset
565 rather than looking for a file called "-m". See
8f137a5c413c Revert r80580 due to some unintended side effects. See issue #8202 for details.
Nick Coghlan <ncoghlan@gmail.com>
parents: 61463
diff changeset
566 tracker issue #8202 for details. */
61465
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567 _PyOS_optind--;
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568 argv[_PyOS_optind] = "-c";
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569 }
33680
bcafb68ad985 SF patch #1035498: -m option to run a module as a script
Raymond Hettinger <python@rcn.com>
parents: 33188
diff changeset
570
61465
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571 PySys_SetArgv(argc-_PyOS_optind, argv+_PyOS_optind);
19633
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Guido van Rossum <guido@python.org>
parents: 18808
diff changeset
572
61465
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573 if ((Py_InspectFlag || (command == NULL && filename == NULL && module == NULL)) &&
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574 isatty(fileno(stdin))) {
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575 PyObject *v;
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576 v = PyImport_ImportModule("readline");
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577 if (v == NULL)
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578 PyErr_Clear();
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579 else
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580 Py_DECREF(v);
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581 }
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parents:
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582
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583 if (command) {
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584 sts = PyRun_SimpleStringFlags(command, &cf) != 0;
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585 free(command);
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586 } else if (module) {
77948
55b3de6d701e Fix closes issue # 15033 - Return the proper exitcode for failure when modules are invoked using -m switch. Patch contributed by Jeff Knupp
Senthil Kumaran <senthil@uthcode.com>
parents: 75159
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587 sts = (RunModule(module, 1) != 0);
61465
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588 free(module);
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589 }
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590 else {
33680
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Raymond Hettinger <python@rcn.com>
parents: 33188
diff changeset
591
61465
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592 if (filename == NULL && stdin_is_interactive) {
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593 Py_InspectFlag = 0; /* do exit on SystemExit */
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diff changeset
594 RunStartupFile(&cf);
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595 }
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596 /* XXX */
43895
4cec0c6392c1 Patch #1739468: Directories and zipfiles containing __main__.py are now executable
Nick Coghlan <ncoghlan@gmail.com>
parents: 43534
diff changeset
597
61465
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598 sts = -1; /* keep track of whether we've already run __main__ */
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599
61465
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600 if (filename != NULL) {
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601 sts = RunMainFromImporter(filename);
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602 }
43895
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Nick Coghlan <ncoghlan@gmail.com>
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603
61465
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604 if (sts==-1 && filename!=NULL) {
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605 if ((fp = fopen(filename, "r")) == NULL) {
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606 fprintf(stderr, "%s: can't open file '%s': [Errno %d] %s\n",
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diff changeset
607 argv[0], filename, errno, strerror(errno));
45854
21139ea59b6b Remove all traces of HAVE_STRERROR.
Brett Cannon <bcannon@gmail.com>
parents: 44740
diff changeset
608
61465
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609 return 2;
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610 }
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611 else if (skipfirstline) {
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diff changeset
612 int ch;
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613 /* Push back first newline so line numbers
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614 remain the same */
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615 while ((ch = getc(fp)) != EOF) {
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616 if (ch == '\n') {
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617 (void)ungetc(ch, fp);
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618 break;
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619 }
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620 }
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621 }
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622 {
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623 /* XXX: does this work on Win/Win64? (see posix_fstat) */
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624 struct stat sb;
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625 if (fstat(fileno(fp), &sb) == 0 &&
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626 S_ISDIR(sb.st_mode)) {
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627 fprintf(stderr, "%s: '%s' is a directory, cannot continue\n", argv[0], filename);
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628 fclose(fp);
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629 return 1;
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630 }
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631 }
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632 }
6316
c2359665be80 Move the "import readline" to an earlier place so it is also done when
Guido van Rossum <guido@python.org>
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633
61465
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634 if (sts==-1) {
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635 /* call pending calls like signal handlers (SIGINT) */
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636 if (Py_MakePendingCalls() == -1) {
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637 PyErr_Print();
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638 sts = 1;
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639 } else {
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640 sts = PyRun_AnyFileExFlags(
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641 fp,
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642 filename == NULL ? "<stdin>" : filename,
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643 filename != NULL, &cf) != 0;
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644 }
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645 }
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646
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647 }
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649 /* Check this environment variable at the end, to give programs the
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650 * opportunity to set it from Python.
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651 */
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652 if (!Py_InspectFlag &&
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653 (p = Py_GETENV("PYTHONINSPECT")) && *p != '\0')
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654 {
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655 Py_InspectFlag = 1;
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656 }
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657
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658 if (Py_InspectFlag && stdin_is_interactive &&
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659 (filename != NULL || command != NULL || module != NULL)) {
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660 Py_InspectFlag = 0;
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661 /* XXX */
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662 sts = PyRun_AnyFileFlags(stdin, "<stdin>", &cf) != 0;
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663 }
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664
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665 Py_Finalize();
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666 #ifdef RISCOS
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667 if (Py_RISCOSWimpFlag)
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668 fprintf(stderr, "\x0cq\x0c"); /* make frontend quit */
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669 #endif
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670
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671 #ifdef __INSURE__
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672 /* Insure++ is a memory analysis tool that aids in discovering
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673 * memory leaks and other memory problems. On Python exit, the
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674 * interned string dictionary is flagged as being in use at exit
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675 * (which it is). Under normal circumstances, this is fine because
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676 * the memory will be automatically reclaimed by the system. Under
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677 * memory debugging, it's a huge source of useless noise, so we
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678 * trade off slower shutdown for less distraction in the memory
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679 * reports. -baw
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680 */
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681 _Py_ReleaseInternedStrings();
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682 #endif /* __INSURE__ */
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683
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684 return sts;
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685 }
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686
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687 /* this is gonna seem *real weird*, but if you put some other code between
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688 Py_Main() and Py_GetArgcArgv() you will need to adjust the test in the
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689 while statement in Misc/gdbinit:ppystack */
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690
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691 /* Make the *original* argc/argv available to other modules.
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692 This is rare, but it is needed by the secureware extension. */
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693
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694 void
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695 Py_GetArgcArgv(int *argc, char ***argv)
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696 {
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697 *argc = orig_argc;
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698 *argv = orig_argv;
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699 }
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700
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701 #ifdef __cplusplus
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702 }
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703 #endif
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704