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Py_Main(), usage(), usage_mid: Add -h and -V flags to print the usage

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message and Python version number and exit immediately.  Closes patch
#101496.
This commit is contained in:
Barry Warsaw 2000-09-15 18:40:42 +00:00
parent 645693783c
commit 3b2aedbdc5
1 changed files with 32 additions and 8 deletions
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40
Modules/main.c
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@ -1,4 +1,3 @@
/* Python interpreter main program */ /* Python interpreter main program */
#include "Python.h" #include "Python.h"
@ -51,6 +50,8 @@ static char *usage_mid = "\
-U : Unicode literals: treats '...' literals like u'...'\n\ -U : Unicode literals: treats '...' literals like u'...'\n\
-v : verbose (trace import statements) (also PYTHONVERBOSE=x)\n\ -v : verbose (trace import statements) (also PYTHONVERBOSE=x)\n\
-x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\ -x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\
-h : print this help message and exit\n\
-V : print the Python version number and exit\n\
-c cmd : program passed in as string (terminates option list)\n\ -c cmd : program passed in as string (terminates option list)\n\
file : program read from script file\n\ file : program read from script file\n\
- : program read from stdin (default; interactive mode if a tty)\n\ - : program read from stdin (default; interactive mode if a tty)\n\
@ -66,6 +67,18 @@ PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n\
"; ";
static void
usage(int exitcode, char* program)
{
fprintf(stderr, usage_line, program);
fprintf(stderr, usage_top);
fprintf(stderr, usage_mid);
fprintf(stderr, usage_bot, DELIM, DELIM, PYTHONHOMEHELP);
exit(exitcode);
/*NOTREACHED*/
}
/* Main program */ /* Main program */
DL_EXPORT(int) DL_EXPORT(int)
@ -81,6 +94,8 @@ Py_Main(int argc, char **argv)
int unbuffered = 0; int unbuffered = 0;
int skipfirstline = 0; int skipfirstline = 0;
int stdin_is_interactive = 0; int stdin_is_interactive = 0;
int help = 0;
int version = 0;
orig_argc = argc; /* For Py_GetArgcArgv() */ orig_argc = argc; /* For Py_GetArgcArgv() */
orig_argv = argv; orig_argv = argv;
@ -90,7 +105,7 @@ Py_Main(int argc, char **argv)
if ((p = getenv("PYTHONUNBUFFERED")) && *p != '\0') if ((p = getenv("PYTHONUNBUFFERED")) && *p != '\0')
unbuffered = 1; unbuffered = 1;
while ((c = getopt(argc, argv, "c:diOStuUvxX")) != EOF) { while ((c = getopt(argc, argv, "c:diOStuUvxXhV")) != EOF) {
if (c == 'c') { if (c == 'c') {
/* -c is the last option; following arguments /* -c is the last option; following arguments
that look like options are left for the that look like options are left for the
@ -142,21 +157,30 @@ Py_Main(int argc, char **argv)
case 'U': case 'U':
Py_UnicodeFlag++; Py_UnicodeFlag++;
break; break;
case 'h':
help++;
break;
case 'V':
version++;
break;
/* This space reserved for other options */ /* This space reserved for other options */
default: default:
fprintf(stderr, usage_line, argv[0]); usage(2, argv[0]);
fprintf(stderr, usage_top);
fprintf(stderr, usage_mid);
fprintf(stderr, usage_bot,
DELIM, DELIM, PYTHONHOMEHELP);
exit(2);
/*NOTREACHED*/ /*NOTREACHED*/
} }
} }
if (help)
usage(0, argv[0]);
if (version) {
fprintf(stderr, "Python %s\n", PY_VERSION);
exit(0);
}
if (command == NULL && optind < argc && if (command == NULL && optind < argc &&
strcmp(argv[optind], "-") != 0) strcmp(argv[optind], "-") != 0)
{ {