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const std = @import("std");
const assert = std.debug.assert;
const c = @import("c.zig").c;
pub const LangSet = opaque {
pub fn create() *LangSet {
return @ptrCast(c.FcLangSetCreate());
}
pub fn destroy(self: *LangSet) void {
c.FcLangSetDestroy(self.cval());
}
pub fn addLang(self: *LangSet, lang: [:0]const u8) bool {
return c.FcLangSetAdd(self.cval(), lang.ptr) == c.FcTrue;
}
pub fn hasLang(self: *const LangSet, lang: [:0]const u8) bool {
return c.FcLangSetHasLang(self.cvalConst(), lang.ptr) == c.FcLangEqual;
}
pub inline fn cval(self: *LangSet) *c.struct__FcLangSet {
return @ptrCast(self);
}
pub inline fn cvalConst(self: *const LangSet) *const c.struct__FcLangSet {
return @ptrCast(self);
}
};
test "create" {
const testing = std.testing;
var fs = LangSet.create();
defer fs.destroy();
try testing.expect(!fs.hasLang("und-zsye"));
}
test "hasLang exact match" {
const testing = std.testing;
// Test exact match: langset with "en-US" should return true for "en-US"
var fs = LangSet.create();
defer fs.destroy();
try testing.expect(fs.addLang("en-US"));
try testing.expect(fs.hasLang("en-US"));
// Test exact match: langset with "und-zsye" should return true for "und-zsye"
var fs_emoji = LangSet.create();
defer fs_emoji.destroy();
try testing.expect(fs_emoji.addLang("und-zsye"));
try testing.expect(fs_emoji.hasLang("und-zsye"));
// Test mismatch: langset with "en-US" should return false for "fr"
try testing.expect(!fs.hasLang("fr"));
// Test partial match: langset with "en-US" should return false for "en-GB"
// (different territory, but we only want exact matches)
try testing.expect(!fs.hasLang("en-GB"));
}
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