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Bug 203264 - Convert hankaku kana to zenkaku kana prior to sending in ISO-2022-JP, to prevent them ending up as question marks. ChatZilla only. r=gijs

Browse Source 
git-svn-id: svn://10.0.0.236/trunk@228658 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
silver%warwickcompsoc.co.uk
2007-06-24 21:45:15 +00:00
parent e54ca9a01d
commit 436cd18c6b
2 changed files with 88 additions and 0 deletions
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87
mozilla/extensions/irc/js/lib/message-manager.js
View File

@@ -51,6 +51,12 @@ function MessageManager(entities)
this.entities = entities || {};
}
// ISO-2022-JP (often used for Japanese on IRC) doesn't contain any support
// for hankaku kana (half-width katakana), so we support the option to convert
// it to zenkaku kana (full-width katakana). This does not affect any other
// encoding at this time.
MessageManager.prototype.enableHankakuToZenkaku = false;
MessageManager.prototype.loadBrands =
function mm_loadbrands()
{
@@ -164,6 +170,84 @@ function mm_importbundle(bundle, targetWindow, index)
this.defaultBundle = bundle;
}
MessageManager.prototype.convertHankakuToZenkaku =
function mm_converthankakutozenkaku(msg)
{
const basicMapping = [
/* 0xFF60 */ 0xFF60,0x3002,0x300C,0x300D,0x3001,0x30FB,0x30F2,0x30A1,
/* 0xFF68 */ 0x30A3,0x30A5,0x30A7,0x30A9,0x30E3,0x30E5,0x30E7,0x30C3,
/* 0xFF70 */ 0x30FC,0x30A2,0x30A4,0x30A6,0x30A8,0x30AA,0x30AB,0x30AD,
/* 0xFF78 */ 0x30AF,0x30B1,0x30B3,0x30B5,0x30B7,0x30B9,0x30BB,0x30BD,
/* 0xFF80 */ 0x30BF,0x30C1,0x30C4,0x30C6,0x30C8,0x30CA,0x30CB,0x30CC,
/* 0xFF88 */ 0x30CD,0x30CE,0x30CF,0x30D2,0x30D5,0x30D8,0x30DB,0x30DE,
/* 0xFF90 */ 0x30DF,0x30E0,0x30E1,0x30E2,0x30E4,0x30E6,0x30E8,0x30E9,
/* 0xFF98 */ 0x30EA,0x30EB,0x30EC,0x30ED,0x30EF,0x30F3,0x309B,0x309C
];
const HANKAKU_BASE1 = 0xFF60;
const HANKAKU_BASE2 = 0xFF80;
const HANKAKU_MASK = 0xFFE0;
const MOD_NIGORI = 0xFF9E;
const NIGORI_MIN1 = 0xFF76;
const NIGORI_MAX1 = 0xFF84;
const NIGORI_MIN2 = 0xFF8A;
const NIGORI_MAX2 = 0xFF8E;
const NIGORI_MODIFIER = 1;
const MOD_MARU = 0xFF9F;
const MARU_MIN = 0xFF8A;
const MARU_MAX = 0xFF8E;
const MARU_MODIFIER = 2;
var i, src, srcMod, dest;
var rv = "";
for (i = 0; i < msg.length; i++)
{
// Get both this character and the next one, which could be a modifier.
src = msg.charCodeAt(i);
if (i < msg.length - 1)
srcMod = msg.charCodeAt(i + 1);
// Is the source characher hankaku?
if ((HANKAKU_BASE1 == (src & HANKAKU_MASK)) ||
(HANKAKU_BASE2 == (src & HANKAKU_MASK)))
{
// Do the basic character mapping first.
dest = basicMapping[src - HANKAKU_BASE1];
// If the source character is in the nigori or maru ranges and
// the following character is the associated modifier, we apply
// the modification and skip over the modifier.
if (i < msg.length - 1)
{
if ((MOD_NIGORI == srcMod) &&
(((src >= NIGORI_MIN1) && (src <= NIGORI_MAX1)) ||
((src >= NIGORI_MIN2) && (src <= NIGORI_MAX2))))
{
dest += NIGORI_MODIFIER;
i++;
}
else if ((MOD_MARU == srcMod) &&
(src >= MARU_MIN) && (src <= MARU_MAX))
{
dest += MARU_MODIFIER;
i++;
}
}
rv += String.fromCharCode(dest);
}
else
{
rv += msg[i];
}
}
return rv;
}
MessageManager.prototype.checkCharset =
function mm_checkset(charset)
{
@@ -205,6 +289,9 @@ function mm_fromunicode(msg, charset)
if (!charset)
return msg;
if (this.enableHankakuToZenkaku && (charset.toLowerCase() == "iso-2022-jp"))
msg = this.convertHankakuToZenkaku(msg);
try
{
// This can actually fail in bizare cases. Cope.

1
mozilla/extensions/irc/xul/content/messages.js
View File

@@ -42,6 +42,7 @@ function initMessages()
var path = "chrome://chatzilla/locale/chatzilla.properties";
client.messageManager = new MessageManager(client.entities);
client.messageManager.enableHankakuToZenkaku = true;
client.messageManager.loadBrands();
client.defaultBundle = client.messageManager.addBundle(path);