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1 | /* grabbag - Convenience lib for various routines common to several tools |
2 | * Copyright (C) 2002-2009 Josh Coalson |
3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2.1 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the Free Software |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
18 | */ |
19 | |
20 | #ifdef HAVE_CONFIG_H |
21 | # include <config.h> |
22 | #endif |
23 | |
24 | #if defined _MSC_VER || defined __MINGW32__ |
25 | #include <sys/utime.h> /* for utime() */ |
26 | #include <io.h> /* for chmod(), _setmode(), unlink() */ |
27 | #include <fcntl.h> /* for _O_BINARY */ |
28 | #else |
29 | #include <sys/types.h> /* some flavors of BSD (like OS X) require this to get time_t */ |
30 | #include <utime.h> /* for utime() */ |
31 | #endif |
32 | #if defined __CYGWIN__ || defined __EMX__ |
33 | #include <io.h> /* for setmode(), O_BINARY */ |
34 | #include <fcntl.h> /* for _O_BINARY */ |
35 | #endif |
36 | #include <sys/stat.h> /* for stat(), maybe chmod() */ |
37 | #if defined _WIN32 && !defined __CYGWIN__ |
38 | #else |
39 | #include <unistd.h> /* for unlink() */ |
40 | #endif |
41 | #include <stdio.h> |
42 | #include <stdlib.h> |
43 | #include <string.h> /* for strrchr() */ |
44 | #if defined _WIN32 && !defined __CYGWIN__ |
45 | // for GetFileInformationByHandle() etc |
46 | #include <windows.h> |
47 | #include <winbase.h> |
48 | #endif |
49 | #include "share/grabbag.h" |
50 | |
51 | |
52 | void grabbag__file_copy_metadata(const char *srcpath, const char *destpath) |
53 | { |
54 | struct flac_stat_s srcstat; |
55 | struct utimbuf srctime; |
56 | |
57 | if(0 == flac_stat(srcpath, &srcstat)) { |
58 | srctime.actime = srcstat.st_atime; |
59 | srctime.modtime = srcstat.st_mtime; |
60 | (void)flac_chmod(destpath, srcstat.st_mode); |
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61 | #if !defined _3DS |
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62 | (void)flac_utime(destpath, &srctime); |
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63 | #endif |
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64 | } |
65 | } |
66 | |
67 | FLAC__off_t grabbag__file_get_filesize(const char *srcpath) |
68 | { |
69 | struct flac_stat_s srcstat; |
70 | |
71 | if(0 == flac_stat(srcpath, &srcstat)) |
72 | return srcstat.st_size; |
73 | else |
74 | return -1; |
75 | } |
76 | |
77 | const char *grabbag__file_get_basename(const char *srcpath) |
78 | { |
79 | const char *p; |
80 | |
81 | p = strrchr(srcpath, '/'); |
82 | if(0 == p) { |
83 | p = strrchr(srcpath, '\\'); |
84 | if(0 == p) |
85 | return srcpath; |
86 | } |
87 | return ++p; |
88 | } |
89 | |
90 | FLAC__bool grabbag__file_change_stats(const char *filename, FLAC__bool read_only) |
91 | { |
92 | struct flac_stat_s stats; |
93 | |
94 | if(0 == flac_stat(filename, &stats)) { |
95 | #if !defined _MSC_VER && !defined __MINGW32__ |
96 | if(read_only) { |
97 | stats.st_mode &= ~S_IWUSR; |
98 | stats.st_mode &= ~S_IWGRP; |
99 | stats.st_mode &= ~S_IWOTH; |
100 | } |
101 | else { |
102 | stats.st_mode |= S_IWUSR; |
103 | } |
104 | #else |
105 | if(read_only) |
106 | stats.st_mode &= ~S_IWRITE; |
107 | else |
108 | stats.st_mode |= S_IWRITE; |
109 | #endif |
110 | if(0 != flac_chmod(filename, stats.st_mode)) |
111 | return false; |
112 | } |
113 | else |
114 | return false; |
115 | |
116 | return true; |
117 | } |
118 | |
119 | FLAC__bool grabbag__file_are_same(const char *f1, const char *f2) |
120 | { |
121 | #if defined _MSC_VER || defined __MINGW32__ |
122 | /* see |
123 | * http://www.hydrogenaudio.org/forums/index.php?showtopic=49439&pid=444300&st=0 |
124 | * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/getfileinformationbyhandle.asp |
125 | * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/by_handle_file_information_str.asp |
126 | * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/createfile.asp |
127 | * apparently both the files have to be open at the same time for the comparison to work |
128 | */ |
129 | FLAC__bool same = false; |
130 | BY_HANDLE_FILE_INFORMATION info1, info2; |
131 | HANDLE h1, h2; |
132 | BOOL ok = 1; |
133 | h1 = CreateFile_utf8(f1, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
134 | h2 = CreateFile_utf8(f2, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
135 | if(h1 == INVALID_HANDLE_VALUE || h2 == INVALID_HANDLE_VALUE) |
136 | ok = 0; |
137 | ok &= GetFileInformationByHandle(h1, &info1); |
138 | ok &= GetFileInformationByHandle(h2, &info2); |
139 | if(ok) |
140 | same = |
141 | info1.dwVolumeSerialNumber == info2.dwVolumeSerialNumber && |
142 | info1.nFileIndexHigh == info2.nFileIndexHigh && |
143 | info1.nFileIndexLow == info2.nFileIndexLow |
144 | ; |
145 | if(h1 != INVALID_HANDLE_VALUE) |
146 | CloseHandle(h1); |
147 | if(h2 != INVALID_HANDLE_VALUE) |
148 | CloseHandle(h2); |
149 | return same; |
150 | #else |
151 | struct flac_stat_s s1, s2; |
152 | return f1 && f2 && flac_stat(f1, &s1) == 0 && flac_stat(f2, &s2) == 0 && s1.st_ino == s2.st_ino && s1.st_dev == s2.st_dev; |
153 | #endif |
154 | } |
155 | |
156 | FLAC__bool grabbag__file_remove_file(const char *filename) |
157 | { |
158 | return grabbag__file_change_stats(filename, /*read_only=*/false) && 0 == flac_unlink(filename); |
159 | } |
160 | |
161 | FILE *grabbag__file_get_binary_stdin(void) |
162 | { |
163 | /* if something breaks here it is probably due to the presence or |
164 | * absence of an underscore before the identifiers 'setmode', |
165 | * 'fileno', and/or 'O_BINARY'; check your system header files. |
166 | */ |
167 | #if defined _MSC_VER || defined __MINGW32__ |
168 | _setmode(_fileno(stdin), _O_BINARY); |
169 | #elif defined __CYGWIN__ |
170 | /* almost certainly not needed for any modern Cygwin, but let's be safe... */ |
171 | setmode(_fileno(stdin), _O_BINARY); |
172 | #elif defined __EMX__ |
173 | setmode(fileno(stdin), O_BINARY); |
174 | #endif |
175 | |
176 | return stdin; |
177 | } |
178 | |
179 | FILE *grabbag__file_get_binary_stdout(void) |
180 | { |
181 | /* if something breaks here it is probably due to the presence or |
182 | * absence of an underscore before the identifiers 'setmode', |
183 | * 'fileno', and/or 'O_BINARY'; check your system header files. |
184 | */ |
185 | #if defined _MSC_VER || defined __MINGW32__ |
186 | _setmode(_fileno(stdout), _O_BINARY); |
187 | #elif defined __CYGWIN__ |
188 | /* almost certainly not needed for any modern Cygwin, but let's be safe... */ |
189 | setmode(_fileno(stdout), _O_BINARY); |
190 | #elif defined __EMX__ |
191 | setmode(fileno(stdout), O_BINARY); |
192 | #endif |
193 | |
194 | return stdout; |
195 | } |