1 /*
2 __ __ _
3 ___\ \/ /_ __ __ _| |_
4 / _ \\ /| '_ \ / _` | __|
5 | __// \| |_) | (_| | |_
6 \___/_/\_\ .__/ \__,_|\__|
7 |_| XML parser
8
9 Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
10 Copyright (c) 2000-2017 Expat development team
11 Licensed under the MIT license:
12
13 Permission is hereby granted, free of charge, to any person obtaining
14 a copy of this software and associated documentation files (the
15 "Software"), to deal in the Software without restriction, including
16 without limitation the rights to use, copy, modify, merge, publish,
17 distribute, sublicense, and/or sell copies of the Software, and to permit
18 persons to whom the Software is furnished to do so, subject to the
19 following conditions:
20
21 The above copyright notice and this permission notice shall be included
22 in all copies or substantial portions of the Software.
23
24 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
27 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
28 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
29 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
30 USE OR OTHER DEALINGS IN THE SOFTWARE.
31 */
32
33 #define STRICT 1
34 #define WIN32_LEAN_AND_MEAN 1
35
36 #ifdef XML_UNICODE_WCHAR_T
37 # ifndef XML_UNICODE
38 # define XML_UNICODE
39 # endif
40 #endif
41
42 #ifdef XML_UNICODE
43 # define UNICODE
44 # define _UNICODE
45 #endif /* XML_UNICODE */
46 #include <windows.h>
47 #include <stdio.h>
48 #include <tchar.h>
49 #include "filemap.h"
50
51 static void win32perror(const TCHAR *);
52
53 int
filemap(const TCHAR * name,void (* processor)(const void *,size_t,const TCHAR *,void * arg),void * arg)54 filemap(const TCHAR *name,
55 void (*processor)(const void *, size_t, const TCHAR *, void *arg),
56 void *arg) {
57 HANDLE f;
58 HANDLE m;
59 DWORD size;
60 DWORD sizeHi;
61 void *p;
62
63 f = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING,
64 FILE_FLAG_SEQUENTIAL_SCAN, NULL);
65 if (f == INVALID_HANDLE_VALUE) {
66 win32perror(name);
67 return 0;
68 }
69 size = GetFileSize(f, &sizeHi);
70 if (size == (DWORD)-1) {
71 win32perror(name);
72 CloseHandle(f);
73 return 0;
74 }
75 if (sizeHi || (size > XML_MAX_CHUNK_LEN)) {
76 CloseHandle(f);
77 return 2; /* Cannot be passed to XML_Parse in one go */
78 }
79 /* CreateFileMapping barfs on zero length files */
80 if (size == 0) {
81 static const char c = '\0';
82 processor(&c, 0, name, arg);
83 CloseHandle(f);
84 return 1;
85 }
86 m = CreateFileMapping(f, NULL, PAGE_READONLY, 0, 0, NULL);
87 if (m == NULL) {
88 win32perror(name);
89 CloseHandle(f);
90 return 0;
91 }
92 p = MapViewOfFile(m, FILE_MAP_READ, 0, 0, 0);
93 if (p == NULL) {
94 win32perror(name);
95 CloseHandle(m);
96 CloseHandle(f);
97 return 0;
98 }
99 processor(p, size, name, arg);
100 UnmapViewOfFile(p);
101 CloseHandle(m);
102 CloseHandle(f);
103 return 1;
104 }
105
106 static void
win32perror(const TCHAR * s)107 win32perror(const TCHAR *s) {
108 LPVOID buf;
109 if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
110 NULL, GetLastError(),
111 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&buf, 0,
112 NULL)) {
113 _ftprintf(stderr, _T("%s: %s"), s, buf);
114 fflush(stderr);
115 LocalFree(buf);
116 } else
117 _ftprintf(stderr, _T("%s: unknown Windows error\n"), s);
118 }
119