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annotate Python/import.c @ 1360:1808ca5d8883 legacy-trunk

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* import.c (MAGIC): Changed magic word to avoid confusion about exec function vs. exec statement * bltinmodule.c: renamed the module to __builtin__. * posixmodule.c (posix_execv): renamed exec --> execv since it is now a reserved word.
author Guido van Rossum <guido@python.org>
date Fri, 22 Oct 1993 14:26:06 +0000
parents a6355c83578d
children 7cd533cf194a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /***********************************************************
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2 Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
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3 Amsterdam, The Netherlands.
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4
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5 All Rights Reserved
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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,
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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
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11 supporting documentation, and that the names of Stichting Mathematisch
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12 Centrum or CWI not be used in advertising or publicity pertaining to
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13 distribution of the software without specific, written prior permission.
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14
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15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22
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23 ******************************************************************/
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24
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25 /* Module definition and import implementation */
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26
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27 #include "allobjects.h"
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28
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29 #include "node.h"
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30 #include "token.h"
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31 #include "graminit.h"
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32 #include "import.h"
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33 #include "errcode.h"
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34 #include "sysmodule.h"
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35 #include "pythonrun.h"
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36 #include "marshal.h"
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37 #include "compile.h"
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38 #include "eval.h"
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39 #include "osdefs.h"
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40
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41 extern int verbose; /* Defined in pythonmain.c */
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42
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43 extern long getmtime(); /* Defined in posixmodule.c */
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44
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45 #ifdef DEBUG
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46 #define D(x) x
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47 #else
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48 #define D(x)
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49 #endif
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50
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51 #ifdef USE_DL
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52 #ifdef SUN_SHLIB
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53 #include <dlfcn.h>
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54 typedef void (*dl_funcptr)();
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55 #else
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56 #include "dl.h"
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57 #endif /* SUN_SHLIB */
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58
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59 extern char *argv0;
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60 #endif
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61
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62 /* Magic word to reject .pyc files generated by other Python versions */
487
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63
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64 #define MAGIC 0x999902L /* Increment by one for each incompatible change */
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65
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66 static object *modules;
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67
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68 /* Forward */
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69 static int init_builtin PROTO((char *));
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70
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71 /* Initialization */
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72
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73 void
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74 initimport()
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75 {
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76 if ((modules = newdictobject()) == NULL)
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77 fatal("no mem for dictionary of modules");
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78 }
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79
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80 object *
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81 get_modules()
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82 {
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83 return modules;
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84 }
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85
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86 object *
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87 add_module(name)
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88 char *name;
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89 {
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90 object *m;
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91 if ((m = dictlookup(modules, name)) != NULL && is_moduleobject(m))
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92 return m;
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93 m = newmoduleobject(name);
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94 if (m == NULL)
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95 return NULL;
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96 if (dictinsert(modules, name, m) != 0) {
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97 DECREF(m);
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98 return NULL;
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99 }
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100 DECREF(m); /* Yes, it still exists, in modules! */
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101 return m;
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102 }
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103
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104 /* Suffixes used by find_module: */
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105
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106 #define PY_SUFFIX ".py"
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107 #define PYC_SUFFIX ".pyc"
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108 #ifdef USE_DL
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109 #ifdef SUN_SHLIB
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110 #define O_SUFFIX "module.so"
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111 #else
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112 #define O_SUFFIX "module.o"
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113 #endif /* SUN_SHLIB */
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114 #endif
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115
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116 /* This will search for a module named 'name' with the extension 'ext'
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117 and return it in 'namebuf' and return the mtime of each in 'mtime'.
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118 It returns a file pointer opened for 'mode' if successful, NULL if
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119 unsuccessful.
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120 */
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121 static FILE *
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122 find_module(name, ext, mode, namebuf, mtime)
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123 char *name;
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124 char *ext;
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125 char *mode;
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126 char *namebuf;
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127 long *mtime;
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128 {
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129 object *path;
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130 FILE *fp;
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131
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132 path = sysget("path");
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133 if (path == NULL || !is_listobject(path)) {
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134 /* No path -- at least try current directory */
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135 strcpy(namebuf, name);
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136 strcat(namebuf, ext);
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137 if ((fp = fopen(namebuf, mode)) == NULL)
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138 return NULL;
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139 *mtime = getmtime(namebuf);
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140 return fp;
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141 } else {
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142 int npath = getlistsize(path);
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143 int i;
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144 for (i = 0; i < npath; i++) {
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145 object *v = getlistitem(path, i);
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146 int len;
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147 if (!is_stringobject(v))
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148 continue;
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149 strcpy(namebuf, getstringvalue(v));
fc6fcd7df4f7 Initial revision
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diff changeset
150 len = getstringsize(v);
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
151 if (len > 0 && namebuf[len-1] != SEP)
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
152 namebuf[len++] = SEP;
86
a6934380c6e7 "Compiling" version
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diff changeset
153 strcpy(namebuf+len, name);
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
154 strcat(namebuf, ext);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
155 if ((fp = fopen(namebuf, mode)) == NULL)
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
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diff changeset
156 continue;
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
157 *mtime = getmtime(namebuf);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
158 return fp;
6
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
159 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
160 }
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
161 namebuf[0] = '\0';
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diff changeset
162 return NULL;
6
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
163 }
fc6fcd7df4f7 Initial revision
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diff changeset
164
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
165 static object *
86
a6934380c6e7 "Compiling" version
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diff changeset
166 get_module(m, name, m_ret)
a6934380c6e7 "Compiling" version
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diff changeset
167 /*module*/object *m;
6
fc6fcd7df4f7 Initial revision
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diff changeset
168 char *name;
86
a6934380c6e7 "Compiling" version
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diff changeset
169 object **m_ret;
6
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
170 {
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
171 codeobject *co = NULL;
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
172 object *v, *d;
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
173 FILE *fp, *fpc;
40
f28ac7f621c7 Added reload() functionality.
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parents: 6
diff changeset
174 node *n;
6
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
175 int err;
675
5aff9f8fd299 Move SEP to osdefs.h. Use MAXPATHLEN from osdefs.h.
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diff changeset
176 char namebuf[MAXPATHLEN+1];
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
177 int namelen;
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
178 long mtime;
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
179
609
0ad5b35e3ad8 Support for dynamic loading added.
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diff changeset
180 #ifdef USE_DL
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
181 if ((fpc = find_module(name, O_SUFFIX, "rb",
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
182 namebuf, &mtime)) != NULL) {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
183 char funcname[258];
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
184 dl_funcptr p;
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diff changeset
185 D(fprintf(stderr, "Found %s\n", namebuf));
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diff changeset
186 fclose(fpc);
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diff changeset
187 sprintf(funcname, "init%s", name);
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188 #ifdef SUN_SHLIB
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diff changeset
189 {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
190 void *handle = dlopen (namebuf, 1);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
191 p = (dl_funcptr) dlsym(handle, funcname);
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192 }
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
193 #else
1353
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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diff changeset
194 if (verbose)
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
Guido van Rossum <guido@python.org>
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diff changeset
195 fprintf(stderr,
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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diff changeset
196 "import %s # dynamically loaded from \"%s\"\n",
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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diff changeset
197 name, namebuf);
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
198 p = dl_loadmod(argv0, namebuf, funcname);
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diff changeset
199 #endif /* SUN_SHLIB */
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diff changeset
200 if (p == NULL) {
1353
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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parents: 1351
diff changeset
201 err_setstr(SystemError,
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
Guido van Rossum <guido@python.org>
parents: 1351
diff changeset
202 "dynamic module does not define init function");
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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diff changeset
203 return NULL;
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
204 } else {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
205 (*p)();
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
206 *m_ret = m = dictlookup(modules, name);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
207 if (m == NULL) {
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diff changeset
208 err_setstr(SystemError,
1353
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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diff changeset
209 "dynamic module not initialized properly");
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
210 return NULL;
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
211 } else {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
212 D(fprintf(stderr,
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
213 "module %s loaded!\n", name));
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
214 INCREF(None);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
215 return None;
609
0ad5b35e3ad8 Support for dynamic loading added.
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parents: 510
diff changeset
216 }
0ad5b35e3ad8 Support for dynamic loading added.
Guido van Rossum <guido@python.org>
parents: 510
diff changeset
217 }
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
218 }
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
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diff changeset
219 else
609
0ad5b35e3ad8 Support for dynamic loading added.
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diff changeset
220 #endif
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
221 if ((fpc = find_module(name, PYC_SUFFIX, "rb",
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
222 namebuf, &mtime)) != NULL) {
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
223 long pyc_mtime;
487
77b80a91d357 New magic word; and check it.
Guido van Rossum <guido@python.org>
parents: 340
diff changeset
224 long magic;
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
225 namebuf[(strlen(namebuf)-1)] = '\0';
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
226 mtime = getmtime(namebuf);
487
77b80a91d357 New magic word; and check it.
Guido van Rossum <guido@python.org>
parents: 340
diff changeset
227 magic = rd_long(fpc);
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
228 pyc_mtime = rd_long(fpc);
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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parents: 1293
diff changeset
229 if (mtime != -1 && mtime > pyc_mtime) {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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parents: 1293
diff changeset
230 fclose(fpc);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
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diff changeset
231 fp = fopen(namebuf, "rb");
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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parents: 1293
diff changeset
232 goto read_py;
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
233 }
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
234 if (magic == MAGIC) {
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
235 v = rd_object(fpc);
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
236 if (v == NULL || err_occurred() ||
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
237 !is_codeobject(v)) {
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
238 err_clear();
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
239 XDECREF(v);
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
240 }
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
241 else
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
242 co = (codeobject *)v;
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
243 }
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
244 fclose(fpc);
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
245 if (verbose) {
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
246 if (co != NULL)
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
247 fprintf(stderr,
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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parents: 1293
diff changeset
248 "import %s # precompiled from \"%s\"\n",
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
249 name, namebuf);
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
250 else
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
251 fprintf(stderr,
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
252 "# invalid precompiled file \"%s\"\n",
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
253 namebuf);
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
254 }
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
Guido van Rossum <guido@python.org>
parents: 228
diff changeset
255 }
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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parents: 1293
diff changeset
256 else if ((fp = find_module(name, PY_SUFFIX, "r",
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
257 namebuf, &mtime)) != NULL) {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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parents: 1293
diff changeset
258 read_py:
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
259 namelen = strlen(namebuf);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
260 if (co == NULL) {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
261 if (verbose)
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
262 fprintf(stderr,
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
263 "import %s # from \"%s\"\n",
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
264 name, namebuf);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
265 err = parse_file(fp, namebuf, file_input, &n);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
266 } else
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
267 err = E_DONE;
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
268 fclose(fp);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
269 if (err != E_DONE) {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
270 err_input(err);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
271 return NULL;
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
272 }
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
273 }
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
274 else {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
275 if (m == NULL) {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
276 sprintf(namebuf, "no module named %.200s", name);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
277 err_setstr(ImportError, namebuf);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
278 }
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
279 else {
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
280 sprintf(namebuf, "no source for module %.200s", name);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
281 err_setstr(ImportError, namebuf);
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
Guido van Rossum <guido@python.org>
parents: 1293
diff changeset
282 }
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
283 return NULL;
fc6fcd7df4f7 Initial revision
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284 }
86
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285 if (m == NULL) {
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286 m = add_module(name);
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287 if (m == NULL) {
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288 freetree(n);
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289 return NULL;
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290 }
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291 *m_ret = m;
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292 }
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293 d = getmoduledict(m);
263
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294 if (co == NULL) {
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295 co = compile(n, namebuf);
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296 freetree(n);
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297 if (co == NULL)
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298 return NULL;
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299 /* Now write the code object to the ".pyc" file */
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300 namebuf[namelen] = 'c';
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301 namebuf[namelen+1] = '\0';
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302 fpc = fopen(namebuf, "wb");
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303 if (fpc != NULL) {
487
77b80a91d357 New magic word; and check it.
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304 wr_long(MAGIC, fpc);
263
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305 /* First write a 0 for mtime */
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306 wr_long(0L, fpc);
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307 wr_object((object *)co, fpc);
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308 if (ferror(fpc)) {
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309 /* Don't keep partial file */
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310 fclose(fpc);
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311 (void) unlink(namebuf);
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312 }
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313 else {
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314 /* Now write the true mtime */
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315 fseek(fpc, 4L, 0);
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316 wr_long(mtime, fpc);
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317 fflush(fpc);
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318 fclose(fpc);
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319 }
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320 }
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321 }
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ac3c80abbf43 * classobject.c: in instance_getattr, don't make a method out of a
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322 v = eval_code(co, d, d, d, (object *)NULL);
263
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323 DECREF(co);
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324 return v;
86
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325 }
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326
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327 static object *
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328 load_module(name)
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329 char *name;
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330 {
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331 object *m, *v;
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332 v = get_module((object *)NULL, name, &m);
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333 if (v == NULL)
6
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334 return NULL;
86
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335 DECREF(v);
6
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336 return m;
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337 }
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338
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339 object *
86
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340 import_module(name)
6
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341 char *name;
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342 {
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343 object *m;
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344 int n;
141
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345 if ((m = dictlookup(modules, name)) == NULL) {
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346 if ((n = init_builtin(name)) || (n = init_frozen(name))) {
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347 if (n < 0)
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348 return NULL;
141
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349 if ((m = dictlookup(modules, name)) == NULL)
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
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350 err_setstr(SystemError,
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351 "builtin module missing");
141
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diff changeset
352 }
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diff changeset
353 else {
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diff changeset
354 m = load_module(name);
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diff changeset
355 }
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356 }
6
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357 return m;
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358 }
40
f28ac7f621c7 Added reload() functionality.
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359
f28ac7f621c7 Added reload() functionality.
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360 object *
86
a6934380c6e7 "Compiling" version
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361 reload_module(m)
40
f28ac7f621c7 Added reload() functionality.
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362 object *m;
f28ac7f621c7 Added reload() functionality.
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diff changeset
363 {
f28ac7f621c7 Added reload() functionality.
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diff changeset
364 if (m == NULL || !is_moduleobject(m)) {
86
a6934380c6e7 "Compiling" version
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diff changeset
365 err_setstr(TypeError, "reload() argument must be module");
40
f28ac7f621c7 Added reload() functionality.
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diff changeset
366 return NULL;
f28ac7f621c7 Added reload() functionality.
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diff changeset
367 }
86
a6934380c6e7 "Compiling" version
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diff changeset
368 /* XXX Ought to check for builtin modules -- can't reload these... */
a6934380c6e7 "Compiling" version
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369 return get_module(m, getmodulename(m), (object **)NULL);
a6934380c6e7 "Compiling" version
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diff changeset
370 }
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diff changeset
371
a6934380c6e7 "Compiling" version
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diff changeset
372 void
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diff changeset
373 doneimport()
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diff changeset
374 {
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diff changeset
375 if (modules != NULL) {
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9fed5726a36d Several changes in one:
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376 int pos;
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377 object *modname, *module;
86
a6934380c6e7 "Compiling" version
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diff changeset
378 /* Explicitly erase all modules; this is the safest way
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379 to get rid of at least *some* circular dependencies */
1288
9fed5726a36d Several changes in one:
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380 pos = 0;
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381 while (mappinggetnext(modules, &pos, &modname, &module)) {
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382 if (is_moduleobject(module)) {
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diff changeset
383 object *dict;
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diff changeset
384 dict = getmoduledict(module);
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diff changeset
385 if (dict != NULL && is_dictobject(dict))
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diff changeset
386 mappingclear(dict);
86
a6934380c6e7 "Compiling" version
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diff changeset
387 }
a6934380c6e7 "Compiling" version
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diff changeset
388 }
1288
9fed5726a36d Several changes in one:
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389 mappingclear(modules);
86
a6934380c6e7 "Compiling" version
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diff changeset
390 }
a6934380c6e7 "Compiling" version
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diff changeset
391 DECREF(modules);
1288
9fed5726a36d Several changes in one:
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392 modules = NULL;
86
a6934380c6e7 "Compiling" version
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diff changeset
393 }
141
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
394
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
395
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
396 /* Initialize built-in modules when first imported */
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diff changeset
397
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
398 static int
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
399 init_builtin(name)
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
400 char *name;
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
401 {
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
402 int i;
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
403 for (i = 0; inittab[i].name != NULL; i++) {
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
404 if (strcmp(name, inittab[i].name) == 0) {
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
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diff changeset
405 if (verbose)
9a754486ef0b Print messages about where from modules are imported when -v is given.
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diff changeset
406 fprintf(stderr, "import %s # builtin\n",
9a754486ef0b Print messages about where from modules are imported when -v is given.
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diff changeset
407 name);
141
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
408 (*inittab[i].initfunc)();
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
409 return 1;
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
410 }
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
411 }
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
412 return 0;
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
413 }
1270
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
414
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
415 extern struct frozen {
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
416 char *name;
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
417 char *code;
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
418 int size;
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diff changeset
419 } frozen_modules[];
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diff changeset
420
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diff changeset
421 int
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diff changeset
422 init_frozen(name)
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diff changeset
423 char *name;
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
424 {
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diff changeset
425 struct frozen *p;
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
426 codeobject *co;
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diff changeset
427 object *m, *d, *v;
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diff changeset
428 for (p = frozen_modules; ; p++) {
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
429 if (p->name == NULL)
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
430 return 0;
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
431 if (strcmp(p->name, name) == 0)
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
432 break;
14369a5e6167 Support for frozen scripts; added -i option.
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diff changeset
433 }
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
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diff changeset
434 if (verbose)
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
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diff changeset
435 fprintf(stderr, "import %s # frozen\n", name);
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
436 co = (codeobject *) rds_object(p->code, p->size);
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
437 if (co == NULL)
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
438 return -1;
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
439 if ((m = add_module(name)) == NULL ||
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
440 (d = getmoduledict(m)) == NULL ||
1293
ac3c80abbf43 * classobject.c: in instance_getattr, don't make a method out of a
Guido van Rossum <guido@python.org>
parents: 1289
diff changeset
441 (v = eval_code(co, d, d, d, (object*)NULL)) == NULL) {
1270
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
442 DECREF(co);
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
443 return -1;
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
444 }
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
445 DECREF(co);
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
446 DECREF(v);
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
447 return 1;
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
448 }