1/* 2The contents of this file are subject to the Mozilla Public License 3Version 1.0 (the "License"); you may not use this file except in 4compliance with the License. You may obtain a copy of the License at 5http://www.mozilla.org/MPL/ 6 7Software distributed under the License is distributed on an "AS IS" 8basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the 9License for the specific language governing rights and limitations 10under the License. 11 12The Original Code is expat. 13 14The Initial Developer of the Original Code is James Clark. 15Portions created by James Clark are Copyright (C) 1998 16James Clark. All Rights Reserved. 17 18Contributor(s): 19*/ 20 21#define STRICT 1 22#ifdef XML_UNICODE 23#define UNICODE 24#define _UNICODE 25#endif /* XML_UNICODE */ 26#include <windows.h> 27#include <stdio.h> 28#include <tchar.h> 29#include "filemap.h" 30 31static void win32perror(const TCHAR *); 32 33int filemap(const TCHAR *name, 34 void (*processor)(const void *, size_t, const TCHAR *, void *arg), 35 void *arg) 36{ 37 HANDLE f; 38 HANDLE m; 39 DWORD size; 40 DWORD sizeHi; 41 void *p; 42 43 f = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 44 FILE_FLAG_SEQUENTIAL_SCAN, NULL); 45 if (f == INVALID_HANDLE_VALUE) { 46 win32perror(name); 47 return 0; 48 } 49 size = GetFileSize(f, &sizeHi); 50 if (size == (DWORD)-1) { 51 win32perror(name); 52 return 0; 53 } 54 if (sizeHi) { 55 _ftprintf(stderr, _T("%s: bigger than 2Gb\n"), name); 56 return 0; 57 } 58 /* CreateFileMapping barfs on zero length files */ 59 if (size == 0) { 60 static const char c = '\0'; 61 processor(&c, 0, name, arg); 62 CloseHandle(f); 63 return 1; 64 } 65 m = CreateFileMapping(f, NULL, PAGE_READONLY, 0, 0, NULL); 66 if (m == NULL) { 67 win32perror(name); 68 CloseHandle(f); 69 return 0; 70 } 71 p = MapViewOfFile(m, FILE_MAP_READ, 0, 0, 0); 72 if (p == NULL) { 73 win32perror(name); 74 CloseHandle(m); 75 CloseHandle(f); 76 return 0; 77 } 78 processor(p, size, name, arg); 79 UnmapViewOfFile(p); 80 CloseHandle(m); 81 CloseHandle(f); 82 return 1; 83} 84 85static 86void win32perror(const TCHAR *s) 87{ 88 LPVOID buf; 89 if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, 90 NULL, 91 GetLastError(), 92 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), 93 (LPTSTR) &buf, 94 0, 95 NULL)) { 96 _ftprintf(stderr, _T("%s: %s"), s, buf); 97 fflush(stderr); 98 LocalFree(buf); 99 } 100 else 101 _ftprintf(stderr, _T("%s: unknown Windows error\n"), s); 102} 103