/
camxes_preproc.js
executable file
·123 lines (107 loc) · 4.8 KB
/
camxes_preproc.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
// ======================= //
// Toaq preprocessor //
// ======================= //
// Written by Ilmen (ilmen.pokebip <at> gmail.com)
// Last change: 2014-04-30
// ======================================================================= //
var tone_marks = "/\\^-~\"V?";
var plain_vowels = "aeiou";
var acute_vowels = "áéíóú";
var grave_vowels = "àèìòù";
var circum_vowels = "âêîôû";
var macron_vowels = "āēīōū";
var tilde_vowels = "ãẽĩõũ";
var breve_vowels = "ǎěǐǒǔ";
var hooked_vowels = "ảẻỉỏủ";
// ======================================================================= //
function camxes_preprocessing(input) {
if (!(typeof input.valueOf() === 'string'))
return "ERROR: Wrong input type.";
input = toaq_diacritics_to_tone_marks(input);
return input;
}
module.exports.preprocessing = camxes_preprocessing;
module.exports.toaq_tone_marks_to_diacritics = toaq_tone_marks_to_diacritics
module.exports.toaq_diacritics_to_tone_marks = toaq_diacritics_to_tone_marks
// ======================================================================= //
function check_for_diacritic_vowel(chr) {
var i;
for (i = 0; i < 5; i++)
if (acute_vowels[i] == chr) return [plain_vowels[i], "/"];
for (i = 0; i < 5; i++)
if (grave_vowels[i] == chr) return [plain_vowels[i], "\\"];
for (i = 0; i < 5; i++)
if (circum_vowels[i] == chr) return [plain_vowels[i], "^"];
for (i = 0; i < 5; i++)
if (macron_vowels[i] == chr) return [plain_vowels[i], "-"];
for (i = 0; i < 5; i++)
if (tilde_vowels[i] == chr) return [plain_vowels[i], "~"];
for (i = 0; i < 5; i++)
if (breve_vowels[i] == chr) return [plain_vowels[i], "V"];
for (i = 0; i < 5; i++)
if (hooked_vowels[i] == chr) return [plain_vowels[i], "?"];
return 0;
}
function make_diacritic_vowel(vowel, tone) {
var n = 0;
while (plain_vowels[n] != vowel && n < 5) n++;
if (n == 5) return "•"; // Unknown vowel
switch (tone) {
case "/": return acute_vowels[n];
case "\\": return grave_vowels[n];
case "^": return circum_vowels[n];
case "-": return macron_vowels[n];
case "~": return tilde_vowels[n];
case "V": return breve_vowels[n];
case "?": return hooked_vowels[n];
default: return "•"; // Unknown tone
}
}
function toaq_diacritics_to_tone_marks(toaq) {
if (!is_string(toaq)) return -1;
for (var i = 0; i < toaq.length; i++) {
var res = check_for_diacritic_vowel(toaq[i]);
if (res != 0) {
toaq = str_replace(toaq, i, 1, res[0]);
do i++;
while (i < toaq.length && chr_check(toaq[i], plain_vowels + "q"));
toaq = str_replace(toaq, i, 0, res[1]);
i++;
}
}
return toaq;
}
function toaq_tone_marks_to_diacritics(toaq) {
if (!is_string(toaq)) return -1;
for (var i = 0; i < toaq.length; i++) {
i = toaq.search(/[aeiou]+q?[\/\\\^\-~\"V\?]/);
if (i < 0) break;
var j = i;
while (!chr_check(toaq[i], tone_marks)) {
i++;
if (i == toaq.length) break;
}
for (var k = 0; k < 8; k++) if (toaq[i] == tone_marks[k]) break;
if (k == 8) continue;
toaq = str_replace(toaq, j, 1, make_diacritic_vowel(toaq[j], tone_marks[k]));
toaq = str_replace(toaq, i, 1, "");
}
return toaq;
}
// ======================================================================= //
function is_string(v) {
return typeof v.valueOf() === 'string';
}
function str_replace(str, pos, len, sub) {
if (pos <= str.length) {
if (pos + len >= str.length) len -= pos + len - str.length;
return str.substring(0, pos) + sub + str.substring(pos + len);
} else return str;
}
function chr_check(chr, list) {
var i = 0;
if (!is_string(list)) return false;
do if (chr == list[i]) return true; while (i++ < list.length);
return false;
}