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annotate Python/dynload_win.c @ 13255:916fb024ce94 legacy-trunk

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Change copyright notice.
author Guido van Rossum <guido@python.org>
date Fri, 30 Jun 2000 23:50:40 +0000
parents 8c8de5b736dc
children 87ee82e5c56d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /***********************************************************
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2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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3 The Netherlands.
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4
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5 All Rights Reserved
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6
13255
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7 Copyright (c) 2000, BeOpen.com.
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8 Copyright (c) 1995-2000, Corporation for National Research Initiatives.
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9 Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
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10 All rights reserved.
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11
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12 See the file "Misc/COPYRIGHT" for information on usage and
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13 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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14
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15 ******************************************************************/
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16
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17 /* Support for dynamic loading of extension modules */
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18
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19 #include <windows.h>
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20 #include <direct.h>
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21
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22 #include "Python.h"
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23 #include "importdl.h"
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24
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25 const struct filedescr _PyImport_DynLoadFiletab[] = {
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26 #ifdef _DEBUG
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27 {"_d.pyd", "rb", C_EXTENSION},
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28 {"_d.dll", "rb", C_EXTENSION},
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29 #else
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30 {".pyd", "rb", C_EXTENSION},
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31 {".dll", "rb", C_EXTENSION},
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32 #endif
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33 {0, 0}
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34 };
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35
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36
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37 dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
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38 const char *pathname, FILE *fp)
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39 {
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40 dl_funcptr p;
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41 char funcname[258];
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42
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43 sprintf(funcname, "init%.200s", shortname);
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44
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45 #ifdef MS_WIN32
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46 {
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47 HINSTANCE hDLL;
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48 char pathbuf[260];
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49 if (strchr(pathname, '\\') == NULL &&
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50 strchr(pathname, '/') == NULL)
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51 {
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52 /* Prefix bare filename with ".\" */
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53 char *p = pathbuf;
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54 *p = '\0';
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55 _getcwd(pathbuf, sizeof pathbuf);
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56 if (*p != '\0' && p[1] == ':')
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57 p += 2;
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58 sprintf(p, ".\\%-.255s", pathname);
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59 pathname = pathbuf;
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60 }
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61 /* Look for dependent DLLs in directory of pathname first */
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62 /* XXX This call doesn't exist in Windows CE */
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63 hDLL = LoadLibraryEx(pathname, NULL,
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64 LOAD_WITH_ALTERED_SEARCH_PATH);
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65 if (hDLL==NULL){
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66 char errBuf[256];
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67 unsigned int errorCode;
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68
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69 /* Get an error string from Win32 error code */
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70 char theInfo[256]; /* Pointer to error text
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71 from system */
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72 int theLength; /* Length of error text */
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73
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74 errorCode = GetLastError();
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75
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76 theLength = FormatMessage(
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77 FORMAT_MESSAGE_FROM_SYSTEM, /* flags */
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78 NULL, /* message source */
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79 errorCode, /* the message (error) ID */
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80 0, /* default language environment */
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81 (LPTSTR) theInfo, /* the buffer */
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82 sizeof(theInfo), /* the buffer size */
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83 NULL); /* no additional format args. */
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84
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85 /* Problem: could not get the error message.
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86 This should not happen if called correctly. */
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87 if (theLength == 0) {
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88 sprintf(errBuf,
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89 "DLL load failed with error code %d",
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90 errorCode);
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91 } else {
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92 size_t len;
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93 /* For some reason a \r\n
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94 is appended to the text */
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95 if (theLength >= 2 &&
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96 theInfo[theLength-2] == '\r' &&
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97 theInfo[theLength-1] == '\n') {
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98 theLength -= 2;
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99 theInfo[theLength] = '\0';
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100 }
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101 strcpy(errBuf, "DLL load failed: ");
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102 len = strlen(errBuf);
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103 strncpy(errBuf+len, theInfo,
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104 sizeof(errBuf)-len);
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105 errBuf[sizeof(errBuf)-1] = '\0';
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106 }
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107 PyErr_SetString(PyExc_ImportError, errBuf);
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108 return NULL;
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109 }
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110 p = GetProcAddress(hDLL, funcname);
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111 }
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112 #endif /* MS_WIN32 */
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113 #ifdef MS_WIN16
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114 {
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115 HINSTANCE hDLL;
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116 char pathbuf[16];
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117 if (strchr(pathname, '\\') == NULL &&
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118 strchr(pathname, '/') == NULL)
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119 {
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120 /* Prefix bare filename with ".\" */
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121 sprintf(pathbuf, ".\\%-.13s", pathname);
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122 pathname = pathbuf;
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123 }
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124 hDLL = LoadLibrary(pathname);
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125 if (hDLL < HINSTANCE_ERROR){
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126 char errBuf[256];
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127 sprintf(errBuf,
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128 "DLL load failed with error code %d", hDLL);
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129 PyErr_SetString(PyExc_ImportError, errBuf);
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130 return NULL;
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131 }
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132 p = GetProcAddress(hDLL, funcname);
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133 }
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134 #endif /* MS_WIN16 */
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135
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136 return p;
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137 }