fontconfig source code

1 module fontconfig;
2 
3 public import fontconfig.fctypes;
4 public import fontconfig.functions;
5 
6 import bindbc.loader;
7 
8 enum FCSupport {
9     noLibrary,
10     badLibrary,
11     // TODO: real versions and stuff
12     fc100      = 100,
13 }
14 
15 private {
16     SharedLib lib;
17     FCSupport loadedVersion;
18 }
19 
20 
21 @nogc nothrow:
22 void unloadFC()
23 {
24     if(lib != invalidHandle) {
25         lib.unload();
26     }
27 }
28 
29 
30 FCSupport loadedFCVersion() { return loadedVersion; }
31 
32 bool isFCLoaded()
33 {
34     return  lib != invalidHandle;
35 }
36 
37 
38 FCSupport loadFC()
39 {
40     // #1778 prevents from using static arrays here :(
41     version(Windows) {
42         const(char)[][1] libNames = [ "libfontconfig-1.dll"];
43     }
44     else version(OSX) {
45         const(char)[][1] libNames = [
46             "/usr/local/lib/libfontconfig.dylib"
47         ];
48     }
49     else version(Posix) {
50         const(char)[][2] libNames = [
51             "libfontconfig.so.1", 
52             "libfontconfig.so"
53         ];
54     }
55     else static assert(0, "bindbc-fc is not yet supported on this platform.");
56 
57     FCSupport ret;
58     foreach(name; libNames) {
59         ret = loadFC(name.ptr);
60         if(ret != FCSupport.noLibrary) break;
61     }
62     return ret;
63 }
64 
65 FCSupport loadFC(const(char)* libName)
66 {
67     lib = load(libName);
68     if(lib == invalidHandle) {
69         return FCSupport.noLibrary;
70     }
71 
72     auto errCount = errorCount();
73     loadedVersion = FCSupport.badLibrary;
74 
75     lib.bindSymbol( cast( void** )&FcObjectSetBuild, "FcObjectSetBuild" );
76     lib.bindSymbol( cast( void** )&FcPatternCreate, "FcPatternCreate" );
77     lib.bindSymbol( cast( void** )&FcPatternAddBool, "FcPatternAddBool" );
78     lib.bindSymbol( cast( void** )&FcFontList, "FcFontList" );
79     lib.bindSymbol( cast( void** )&FcPatternDestroy, "FcPatternDestroy" );
80     lib.bindSymbol( cast( void** )&FcObjectSetDestroy, "FcObjectSetDestroy" );
81     lib.bindSymbol( cast( void** )&FcPatternGetString, "FcPatternGetString" );
82     lib.bindSymbol( cast( void** )&FcPatternGetInteger, "FcPatternGetInteger" );
83     lib.bindSymbol( cast( void** )&FcPatternGetBool, "FcPatternGetBool" );
84     lib.bindSymbol( cast( void** )&FcFontSetDestroy, "FcFontSetDestroy" );
85 
86     if(errorCount() != errCount) return FCSupport.badLibrary;
87     else loadedVersion = FCSupport.fc100;
88 
89     return loadedVersion;
90 }