1 /* 2 ** 2015 November 30 3 ** 4 ** The author disclaims copyright to this source code. In place of 5 ** a legal notice, here is a blessing: 6 ** 7 ** May you do good and not evil. 8 ** May you find forgiveness for yourself and forgive others. 9 ** May you share freely, never taking more than you give. 10 ** 11 ************************************************************************* 12 ** This file contains declarations for most of the opendir() family of 13 ** POSIX functions on Win32 using the MSVCRT. 14 */ 15 16 #if defined(_WIN32) && defined(_MSC_VER) 17 18 /* 19 ** We need several data types from the Windows SDK header. 20 */ 21 22 #define WIN32_LEAN_AND_MEAN 23 #include "windows.h" 24 25 /* 26 ** We need several support functions from the SQLite core. 27 */ 28 29 #include "sqlite3.h" 30 31 /* 32 ** We need several things from the ANSI and MSVCRT headers. 33 */ 34 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <errno.h> 38 #include <io.h> 39 #include <limits.h> 40 41 /* 42 ** We may need to provide the "ino_t" type. 43 */ 44 45 #ifndef INO_T_DEFINED 46 #define INO_T_DEFINED 47 typedef unsigned short ino_t; 48 #endif 49 50 /* 51 ** We need to define "NAME_MAX" if it was not present in "limits.h". 52 */ 53 54 #ifndef NAME_MAX 55 # ifdef FILENAME_MAX 56 # define NAME_MAX (FILENAME_MAX) 57 # else 58 # define NAME_MAX (260) 59 # endif 60 #endif 61 62 /* 63 ** We need to define "NULL_INTPTR_T" and "BAD_INTPTR_T". 64 */ 65 66 #ifndef NULL_INTPTR_T 67 # define NULL_INTPTR_T ((intptr_t)(0)) 68 #endif 69 70 #ifndef BAD_INTPTR_T 71 # define BAD_INTPTR_T ((intptr_t)(-1)) 72 #endif 73 74 /* 75 ** We need to provide the necessary structures and related types. 76 */ 77 78 typedef struct DIRENT DIRENT; 79 typedef struct DIR DIR; 80 typedef DIRENT *LPDIRENT; 81 typedef DIR *LPDIR; 82 83 struct DIRENT { 84 ino_t d_ino; /* Sequence number, do not use. */ 85 unsigned d_attributes; /* Win32 file attributes. */ 86 char d_name[NAME_MAX + 1]; /* Name within the directory. */ 87 }; 88 89 struct DIR { 90 intptr_t d_handle; /* Value returned by "_findfirst". */ 91 DIRENT d_first; /* DIRENT constructed based on "_findfirst". */ 92 DIRENT d_next; /* DIRENT constructed based on "_findnext". */ 93 }; 94 95 /* 96 ** Provide a macro, for use by the implementation, to determine if a 97 ** particular directory entry should be skipped over when searching for 98 ** the next directory entry that should be returned by the readdir() or 99 ** readdir_r() functions. 100 */ 101 102 #ifndef is_filtered 103 # define is_filtered(a) ((((a).attrib)&_A_HIDDEN) || (((a).attrib)&_A_SYSTEM)) 104 #endif 105 106 /* 107 ** Provide the function prototype for the POSIX compatiable getenv() 108 ** function. This function is not thread-safe. 109 */ 110 111 extern const char *windirent_getenv(const char *name); 112 113 /* 114 ** Finally, we can provide the function prototypes for the opendir(), 115 ** readdir(), readdir_r(), and closedir() POSIX functions. 116 */ 117 118 extern LPDIR opendir(const char *dirname); 119 extern LPDIRENT readdir(LPDIR dirp); 120 extern INT readdir_r(LPDIR dirp, LPDIRENT entry, LPDIRENT *result); 121 extern INT closedir(LPDIR dirp); 122 123 #endif /* defined(WIN32) && defined(_MSC_VER) */ 124