util_windows.c revision f838788e6a4d57634a53eb597ee76a597feffcb5 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <string.h>
32#include <errno.h>
33#include <fcntl.h>
34#include <unistd.h>
35#include <limits.h>
36
37#include <windows.h>
38
39int64_t file_size(const char *fn)
40{
41    HANDLE    file;
42    char     *data;
43    DWORD     sz;
44
45    file = CreateFile( fn,
46                       GENERIC_READ,
47                       FILE_SHARE_READ,
48                       NULL,
49                       OPEN_EXISTING,
50                       0,
51                       NULL );
52
53    if (file == INVALID_HANDLE_VALUE)
54        return -1;
55
56    sz = GetFileSize( file, NULL );
57    CloseHandle( file );
58
59    return sz;
60}
61
62void get_my_path(char exe[PATH_MAX])
63{
64	char*  r;
65
66	GetModuleFileName( NULL, exe, PATH_MAX-1 );
67	exe[PATH_MAX-1] = 0;
68	r = strrchr( exe, '\\' );
69	if (r)
70		*r = 0;
71}
72
73
74void *load_file(const char *fn, unsigned *_sz)
75{
76    HANDLE    file;
77    char     *data;
78    DWORD     sz;
79
80    file = CreateFile( fn,
81                       GENERIC_READ,
82                       FILE_SHARE_READ,
83                       NULL,
84                       OPEN_EXISTING,
85                       0,
86                       NULL );
87
88    if (file == INVALID_HANDLE_VALUE)
89        return NULL;
90
91    sz = GetFileSize( file, NULL );
92    data      = NULL;
93
94    if (sz > 0) {
95        data = (char*) malloc( sz );
96        if (data == NULL) {
97            fprintf(stderr, "load_file: could not allocate %ld bytes\n", sz );
98            sz = 0;
99        } else {
100            DWORD  out_bytes;
101
102            if ( !ReadFile( file, data, sz, &out_bytes, NULL ) ||
103                 out_bytes != sz )
104            {
105                fprintf(stderr, "load_file: could not read %ld bytes from '%s'\n", sz, fn);
106                free(data);
107                data      = NULL;
108                sz = 0;
109            }
110        }
111    }
112    CloseHandle( file );
113
114    *_sz = (unsigned) sz;
115    return  data;
116}
117