1 /* This file is (c) 2008-2012 Konstantin Isakov <ikm@goldendict.org>
2 * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
3
4 #include "filetype.hh"
5 #include "utf8.hh"
6 #include <ctype.h>
7
8 namespace Filetype {
9
10 namespace {
11
12 /// Checks if the given string ends with the given substring
endsWith(string const & str,string const & tail)13 bool endsWith( string const & str, string const & tail )
14 {
15 return str.size() >= tail.size() &&
16 str.compare( str.size() - tail.size(), tail.size(), tail ) == 0;
17 }
18
19 }
20
21 /// Removes any trailing or leading spaces and lowercases the string.
22 /// The lowercasing is done simplistically, but it is enough for file
23 /// extensions.
simplifyString(string const & str,bool lowercase)24 string simplifyString( string const & str, bool lowercase )
25 {
26 string result;
27
28 size_t beginPos = 0;
29
30 while( beginPos < str.size() && Utf8::isspace( str[ beginPos ] ) )
31 ++beginPos;
32
33 size_t endPos = str.size();
34
35 while( endPos && Utf8::isspace( str[ endPos - 1 ] ) )
36 --endPos;
37
38 if( endPos <= beginPos )
39 return string();
40
41 result.reserve( endPos - beginPos );
42
43 while( beginPos < endPos )
44 result.push_back( lowercase ? tolower( str[ beginPos++ ] ) : str[ beginPos++ ] );
45
46 return result;
47 }
48
isNameOfSound(string const & name)49 bool isNameOfSound( string const & name )
50 {
51 string s = simplifyString( name );
52
53 return
54 endsWith( s, ".wav" ) ||
55 endsWith( s, ".au" ) ||
56 endsWith( s, ".voc" ) ||
57 endsWith( s, ".ogg" ) ||
58 endsWith( s, ".mp3" ) ||
59 endsWith( s, ".m4a") ||
60 endsWith( s, ".aac" ) ||
61 endsWith( s, ".flac" ) ||
62 endsWith( s, ".mid" ) ||
63 endsWith( s, ".kar" ) ||
64 endsWith( s, ".mpc" ) ||
65 endsWith( s, ".wma" ) ||
66 endsWith( s, ".wv" ) ||
67 endsWith( s, ".ape" ) ||
68 endsWith( s, ".spx" ) ||
69 endsWith( s, ".opus" ) ||
70 endsWith( s, ".mpa" ) ||
71 endsWith( s, ".mp2" );
72 }
73
isNameOfVideo(string const & name)74 bool isNameOfVideo( string const & name )
75 {
76 string s = simplifyString( name );
77
78 return
79 endsWith( s, ".mpg" ) ||
80 endsWith( s, ".mpeg" )||
81 endsWith( s, ".mpe" ) ||
82 endsWith( s, ".ogv" ) ||
83 endsWith( s, ".ogm" ) ||
84 endsWith( s, ".avi" ) ||
85 endsWith( s, ".m4v" ) ||
86 endsWith( s, ".mp4" ) ||
87 endsWith( s, ".mkv" ) ||
88 endsWith( s, ".wmv" ) ||
89 endsWith( s, ".sfw" ) ||
90 endsWith( s, ".flv" ) ||
91 endsWith( s, ".divx" ) ||
92 endsWith( s, ".3gp" ) ||
93 endsWith( s, ".webm" ) ||
94 endsWith( s, ".mov" );
95 }
96
isNameOfPicture(string const & name)97 bool isNameOfPicture( string const & name )
98 {
99 string s = simplifyString( name );
100
101 return
102 endsWith( s, ".jpg" ) ||
103 endsWith( s, ".jpeg" ) ||
104 endsWith( s, ".jpe" ) ||
105 endsWith( s, ".png" ) ||
106 endsWith( s, ".gif" ) ||
107 endsWith( s, ".bmp" ) ||
108 endsWith( s, ".tif" ) ||
109 endsWith( s, ".tiff" ) ||
110 endsWith( s, ".tga" ) ||
111 endsWith( s, ".pcx" ) ||
112 endsWith( s, ".ico" ) ||
113 endsWith( s, ".webp" ) ||
114 endsWith( s, ".svg" );
115 }
116
isNameOfTiff(string const & name)117 bool isNameOfTiff( string const & name )
118 {
119 string s = simplifyString( name );
120
121 return
122 endsWith( s, ".tif" ) ||
123 endsWith( s, ".tiff" );
124 }
125
isNameOfCSS(string const & name)126 bool isNameOfCSS( string const & name )
127 {
128 string s = simplifyString( name );
129
130 return
131 endsWith( s, ".css" );
132 }
133
isNameOfSvg(string const & name)134 bool isNameOfSvg( string const & name )
135 {
136 string s = simplifyString( name );
137
138 return
139 endsWith( s, ".svg" );
140 }
141
142 }
143