98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
|
|
See the file COPYING for copying permission.
|
|
*/
|
|
|
|
#define STRICT 1
|
|
#define WIN32_LEAN_AND_MEAN 1
|
|
|
|
#ifdef XML_UNICODE_WCHAR_T
|
|
#ifndef XML_UNICODE
|
|
#define XML_UNICODE
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef XML_UNICODE
|
|
#define UNICODE
|
|
#define _UNICODE
|
|
#endif /* XML_UNICODE */
|
|
#include <windows.h>
|
|
#include <stdio.h>
|
|
#include <tchar.h>
|
|
#include "filemap.h"
|
|
|
|
static void win32perror(const TCHAR *);
|
|
|
|
int
|
|
filemap(const TCHAR *name,
|
|
void (*processor)(const void *, size_t, const TCHAR *, void *arg),
|
|
void *arg)
|
|
{
|
|
HANDLE f;
|
|
HANDLE m;
|
|
DWORD size;
|
|
DWORD sizeHi;
|
|
void *p;
|
|
|
|
f = CreateFile(name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING,
|
|
FILE_FLAG_SEQUENTIAL_SCAN, NULL);
|
|
if (f == INVALID_HANDLE_VALUE) {
|
|
win32perror(name);
|
|
return 0;
|
|
}
|
|
size = GetFileSize(f, &sizeHi);
|
|
if (size == (DWORD)-1) {
|
|
win32perror(name);
|
|
CloseHandle(f);
|
|
return 0;
|
|
}
|
|
if (sizeHi || (size > XML_MAX_CHUNK_LEN)) {
|
|
CloseHandle(f);
|
|
return 2; /* Cannot be passed to XML_Parse in one go */
|
|
}
|
|
/* CreateFileMapping barfs on zero length files */
|
|
if (size == 0) {
|
|
static const char c = '\0';
|
|
processor(&c, 0, name, arg);
|
|
CloseHandle(f);
|
|
return 1;
|
|
}
|
|
m = CreateFileMapping(f, NULL, PAGE_READONLY, 0, 0, NULL);
|
|
if (m == NULL) {
|
|
win32perror(name);
|
|
CloseHandle(f);
|
|
return 0;
|
|
}
|
|
p = MapViewOfFile(m, FILE_MAP_READ, 0, 0, 0);
|
|
if (p == NULL) {
|
|
win32perror(name);
|
|
CloseHandle(m);
|
|
CloseHandle(f);
|
|
return 0;
|
|
}
|
|
processor(p, size, name, arg);
|
|
UnmapViewOfFile(p);
|
|
CloseHandle(m);
|
|
CloseHandle(f);
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
win32perror(const TCHAR *s)
|
|
{
|
|
LPVOID buf;
|
|
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER
|
|
| FORMAT_MESSAGE_FROM_SYSTEM,
|
|
NULL,
|
|
GetLastError(),
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
|
|
(LPTSTR) &buf,
|
|
0,
|
|
NULL)) {
|
|
_ftprintf(stderr, _T("%s: %s"), s, buf);
|
|
fflush(stderr);
|
|
LocalFree(buf);
|
|
}
|
|
else
|
|
_ftprintf(stderr, _T("%s: unknown Windows error\n"), s);
|
|
}
|