1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Python interpreter main program */
#include "Python.h"
/* Interface to getopt(): */
extern int optind;
extern char *optarg;
extern int getopt(); /* PROTO((int, char **, char *)); -- not standardized */
/* Subroutines that live in their own file */
extern char *Py_GetVersion();
extern char *Py_GetCopyright();
/* For getprogramname(); set by main() */
static char *argv0;
/* For getargcargv(); set by main() */
static char **orig_argv;
static int orig_argc;
/* Short usage message (with %s for argv0) */
static char *usage_line =
"usage: %s [-d] [-i] [-s] [-u ] [-v] [-c cmd | file | -] [arg] ...\n";
/* Long usage message, split into parts < 512 bytes */
static char *usage_top = "\n\
Options and arguments (and corresponding environment variables):\n\
-d : debug output from parser (also PYTHONDEBUG=x)\n\
-i : inspect interactively after running script (also PYTHONINSPECT=x)\n\
-s : suppress printing of top level expressions (also PYTHONSUPPRESS=x)\n\
-u : unbuffered stdout and stderr (also PYTHONUNBUFFERED=x)\n\
-v : verbose (trace import statements) (also PYTHONVERBOSE=x)\n\
-c cmd : program passed in as string (terminates option list)\n\
";
static char *usage_bot = "\
file : program read from script file\n\
- : program read from stdin (default; interactive mode if a tty)\n\
arg ...: arguments passed to program in sys.argv[1:]\n\
\n\
Other environment variables:\n\
PYTHONSTARTUP: file executed on interactive startup (no default)\n\
PYTHONPATH : colon-separated list of directories prefixed to the\n\
default module search path. The result is sys.path.\n\
";
/* Main program */
int
main(argc, argv)
int argc;
char **argv;
{
int c;
int sts;
char *command = NULL;
char *filename = NULL;
FILE *fp = stdin;
char *p;
int inspect = 0;
int unbuffered = 0;
orig_argc = argc; /* For getargcargv() */
orig_argv = argv;
argv0 = argv[0]; /* For getprogramname() */
if ((p = getenv("PYTHONDEBUG")) && *p != '\0')
Py_DebugFlag = 1;
if ((p = getenv("PYTHONSUPPRESS")) && *p != '\0')
Py_SuppressPrintingFlag = 1;
if ((p = getenv("PYTHONVERBOSE")) && *p != '\0')
Py_VerboseFlag = 1;
if ((p = getenv("PYTHONINSPECT")) && *p != '\0')
inspect = 1;
if ((p = getenv("PYTHONUNBUFFERED")) && *p != '\0')
unbuffered = 1;
while ((c = getopt(argc, argv, "c:disuv")) != EOF) {
if (c == 'c') {
/* -c is the last option; following arguments
that look like options are left for the
the command to interpret. */
command = malloc(strlen(optarg) + 2);
if (command == NULL)
Py_FatalError(
"not enough memory to copy -c argument");
strcpy(command, optarg);
strcat(command, "\n");
break;
}
switch (c) {
case 'd':
Py_DebugFlag++;
break;
case 'i':
inspect++;
break;
case 's':
Py_SuppressPrintingFlag++;
break;
case 'u':
unbuffered++;
break;
case 'v':
Py_VerboseFlag++;
break;
/* This space reserved for other options */
default:
fprintf(stderr, usage_line, argv[0]);
fprintf(stderr, usage_top);
fprintf(stderr, usage_bot);
exit(2);
/*NOTREACHED*/
}
}
if (unbuffered) {
#ifndef MPW
setbuf(stdout, (char *)NULL);
setbuf(stderr, (char *)NULL);
#else
/* On MPW (3.2) unbuffered seems to hang */
setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ);
setvbuf(stderr, (char *)NULL, _IOLBF, BUFSIZ);
#endif
}
if (command == NULL && optind < argc &&
strcmp(argv[optind], "-") != 0)
filename = argv[optind];
if (Py_VerboseFlag ||
command == NULL && filename == NULL && isatty((int)fileno(fp)))
fprintf(stderr, "Python %s\n%s\n",
Py_GetVersion(), Py_GetCopyright());
if (filename != NULL) {
if ((fp = fopen(filename, "r")) == NULL) {
fprintf(stderr, "%s: can't open file '%s'\n",
argv[0], filename);
exit(2);
}
}
Py_Initialize();
if (command != NULL) {
/* Backup optind and force sys.argv[0] = '-c' */
optind--;
argv[optind] = "-c";
}
PySys_SetArgv(argc-optind, argv+optind);
if (command) {
sts = PyRun_SimpleString(command) != 0;
}
else {
if (filename == NULL && isatty((int)fileno(fp))) {
char *startup = getenv("PYTHONSTARTUP");
if (startup != NULL && startup[0] != '\0') {
FILE *fp = fopen(startup, "r");
if (fp != NULL) {
(void) PyRun_SimpleFile(fp, startup);
PyErr_Clear();
fclose(fp);
}
}
}
sts = PyRun_AnyFile(
fp, filename == NULL ? "<stdin>" : filename) != 0;
if (filename != NULL)
fclose(fp);
}
if (inspect && isatty((int)fileno(stdin)) &&
(filename != NULL || command != NULL))
sts = PyRun_AnyFile(stdin, "<stdin>") != 0;
Py_Exit(sts);
/*NOTREACHED*/
}
/* Return the program name -- some code out there needs this. */
char *
getprogramname()
{
return argv0;
}
/* Make the *original* argc/argv available to other modules.
This is rare, but it is needed by the secureware extension. */
void
getargcargv(argc,argv)
int *argc;
char ***argv;
{
*argc = orig_argc;
*argv = orig_argv;
}
|
