ask.locale source code

1 
2 /++
3  + Authors: Stephan Dilly, lastname dot firstname at gmail dot com
4  + Copyright: MIT
5  +/
6 module ask.locale;
7 
8 ///
9 interface ITextManager
10 {
11     /++
12 	 + returns the localized text string depending on the loaded locale database
13 	 + 
14 	 + params:
15 	 +	_key = loca lookup key
16 	 +
17 	 + see_also:
18 	 +	`this`, `AlexaText`, `LocaParser`
19 	 +/
20     string getText(int _key) const pure nothrow;
21 }
22 
23 ///
24 struct AlexaText
25 {
26 	///
27 	int key;
28 	///
29 	string text;
30 }
31 
32 /// template to parse csv of loca entries
33 string LocaParser(E,string input)()
34 {
35 	import std.string:splitLines,strip;
36 	import std.algorithm:startsWith;
37 	import std.format:format;
38 	import std.array:split;
39 
40 	enum string[] lines = input.splitLines;
41 
42 	string res = "[";
43 
44 	allMembers:
45 	foreach(enumMember; __traits(allMembers, E))
46 	{
47 		foreach(line; lines)
48 		{
49 			line = line.strip;
50 
51 			if(line.startsWith(enumMember))
52 			{
53 				auto lineArgs = line.split(",");
54 				auto locaKey = lineArgs[0];
55 				auto locaText = line[locaKey.length+1..$].strip;
56 				auto entry = format("AlexaText(%s.%s, \"%s\"),", E.stringof,enumMember,locaText);
57 				res ~= entry ~ "\n";
58 				continue allMembers;
59 			}
60 		}
61 	}
62 
63 	return res ~ "]";
64 }
65 
66 ///
67 unittest
68 {
69     enum TextIds 
70     {
71         key1,key2
72     }
73 
74 	enum testCsv = "key2, foo\n key1 ,  bar  ";
75 
76     enum AlexaText[] AlexaText_test = mixin(LocaParser!(TextIds,testCsv));
77 
78     static assert(AlexaText_test[0].text == "bar");
79     static assert(AlexaText_test[1].text == "foo");
80 
81     static assert(AlexaText_test[0].key == TextIds.key1);
82     static assert(AlexaText_test[1].key == TextIds.key2);
83 }