+ * Japanese decoding function
+ * @since 1.5.1
+ */
+function japanese_xtra_decode($ret) {
+ if (function_exists('mb_detect_encoding')) {
+ $detect_encoding = @mb_detect_encoding($ret);
+ if ($detect_encoding == 'JIS' ||
+ $detect_encoding == 'EUC-JP' ||
+ $detect_encoding == 'SJIS' ||
+ $detect_encoding == 'UTF-8') {
+
+ $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV");
+ }
+ }
+ return $ret;
+}
+
+/**
+ * Japanese encoding function
+ * @since 1.5.1
+ */
+function japanese_xtra_encode($ret) {
+ if (function_exists('mb_detect_encoding')) {
+ $detect_encoding = @mb_detect_encoding($ret);
+ if ($detect_encoding == 'JIS' ||
+ $detect_encoding == 'EUC-JP' ||
+ $detect_encoding == 'SJIS' ||
+ $detect_encoding == 'UTF-8') {
+
+ $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO');
+ }
+ }
+ return $ret;
+}
+
+/**
+ * Japanese header encoding function
+ * @since 1.5.1
+ */
+function japanese_xtra_encodeheader($ret) {
+ if (function_exists('mb_detect_encoding')) {
+ $result = '';
+ if (strlen($ret) > 0) {
+ $tmpstr = mb_substr($ret, 0, 1);
+ $prevcsize = strlen($tmpstr);
+ for ($i = 1; $i < mb_strlen($ret); $i++) {
+ $tmp = mb_substr($ret, $i, 1);
+ if (strlen($tmp) == $prevcsize) {
+ $tmpstr .= $tmp;
+ } else {
+ if ($prevcsize == 1) {
+ $result .= $tmpstr;
+ } else {
+ $result .= str_replace(' ', '',
+ mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
+ }
+ $tmpstr = $tmp;
+ $prevcsize = strlen($tmp);
+ }
+ }
+ if (strlen($tmpstr)) {
+ if (strlen(mb_substr($tmpstr, 0, 1)) == 1)
+ $result .= $tmpstr;
+ else
+ $result .= str_replace(' ', '',
+ mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
+ }
+ }
+ $ret = $result;
+ }
+ return $ret;
+}
+
+/**
+ * Japanese header decoding function
+ * @since 1.5.1
+ */
+function japanese_xtra_decodeheader($ret) {
+ if (function_exists('mb_detect_encoding')) {
+ $ret = str_replace("\t", "", $ret);
+ if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret))
+ $ret = @mb_decode_mimeheader($ret);
+ $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
+ }
+ return $ret;
+}
+
+/**
+ * Japanese downloaded filename processing function
+ * @since 1.5.1
+ */
+function japanese_xtra_downloadfilename($ret,$useragent) {
+ if (function_exists('mb_detect_encoding')) {
+ if (strstr($useragent, 'Windows') !== false ||
+ strstr($useragent, 'Mac_') !== false) {
+ $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO');
+ } else {
+ $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
+ }
+ }
+ return $ret;
+}
+
+/**
+ * Japanese wordwrap function
+ *
+ * @since 1.5.1
+ */
+function japanese_xtra_wordwrap($ret,$wrap) {
+ if (function_exists('mb_detect_encoding')) {
+ $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" .
+ "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" .
+ "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" .
+ "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" .
+ "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" .
+ "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" .
+ "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" .
+ "\xa8\xa1\xa9\xa1\xcf\xa1\xd1";
+ $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" .
+ "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef";
+
+ if (strlen($ret) >= $wrap &&
+ substr($ret, 0, 1) != '>' &&
+ strpos($ret, 'http://') === FALSE &&
+ strpos($ret, 'https://') === FALSE &&
+ strpos($ret, 'ftp://') === FALSE) {
+
+ $ret = mb_convert_kana($ret, "KV");
+
+ $line_new = '';
+ $ptr = 0;
+
+ while ($ptr < strlen($ret) - 1) {
+ $l = mb_strcut($ret, $ptr, $wrap);
+ $ptr += strlen($l);
+ $tmp = $l;
+
+ $l = mb_strcut($ret, $ptr, 2);
+ while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) {
+ $tmp .= $l;
+ $ptr += strlen($l);
+ $l = mb_strcut($ret, $ptr, 1);
+ }
+ $line_new .= $tmp;
+ if ($ptr < strlen($ret) - 1)
+ $line_new .= "\n";
+ }
+ $ret = $line_new;
+ }
+ }
+ return $ret;
+}
+
+/**
+ * Japanese imap folder name encoding function
+ * @since 1.5.1
+ */
+function japanese_xtra_utf7_imap_encode($ret){
+ if (function_exists('mb_detect_encoding')) {
+ $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP');
+ }
+ return $ret;
+}
+
+/**
+ * Japanese imap folder name decoding function
+ * @since 1.5.1
+ */
+function japanese_xtra_utf7_imap_decode($ret) {
+ if (function_exists('mb_detect_encoding')) {
+ $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP');
+ }
+ return $ret;
+}
+
+/**
+ * Japanese string trimming function
+ * @since 1.5.1
+ */
+function japanese_xtra_strimwidth($ret,$width) {
+ if (function_exists('mb_detect_encoding')) {
+ $ret = mb_strimwidth($ret, 0, $width, '...');
+ }
+ return $ret;
+}
+
+/********************************