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#include <string.h>
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#include <stdio.h>
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#include <glib.h>
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#include "debug.h"
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#include "linguistics.h"
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static const char *special[][3]={
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/* Capital Diacritics */
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/* ¨ Diaresis */
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{"Ä","A","AE"},
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{"Ë","E"},
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{"Ï","I"},
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{"Ö","O","OE"},
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{"Ü","U","UE"},
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{"Ÿ","Y"},
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/* ˝ Double Acute Accent */
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{"Ő","O","Ö"},
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{"Ű","U","Ü"},
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/* ´ Acute Accent */
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{"Á","A"},
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{"Ć","C"},
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{"É","E"},
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{"Í","I"},
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{"Ĺ","L"},
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{"Ń","N"},
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{"Ó","O"},
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{"Ŕ","R"},
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{"Ś","S"},
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{"Ú","U"},
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{"Ý","Y"},
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{"Ź","Z"},
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/* ˛ Ogonek (nosinė) */
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{"Ą","A"},
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{"Ę","E"},
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{"Į","I"},
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{"Ų","U"},
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/* ˙ Dot */
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{"Ċ","C"},
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{"Ė","E"},
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{"Ġ","G"},
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{"İ","I"},
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{"Ŀ","L"},
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{"Ż","Z"},
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/* – Stroke */
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{"Đ","D","DJ"}, /* Croatian Dj, not to be confused with the similar-looking Icelandic Eth */
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{"Ħ","H"},
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{"Ł","L"},
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{"Ŧ","T"},
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/* ˚ Ring */
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{"Å","A","AA"},
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{"Ů","U"},
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/* ˇ Caron (haček, paukščiukas) */
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{"Č","C"},
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{"Ď","D"},
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{"Ě","E"},
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{"Ľ","L"},
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{"Ň","N"},
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{"Ř","R"},
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{"Š","S"},
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{"Ť","T"},
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{"Ž","Z"},
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/* / Slash */
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{"Ø","O","OE"},
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/* ¯ Macron */
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{"Ā","A","AA"},
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{"Ē","E","EE"},
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{"Ī","I","II"},
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{"Ō","O","OO"},
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{"Ū","U","UU"},
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/* ˘ Brevis */
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{"Ă","A"},
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{"Ĕ","E"},
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{"Ğ","G"},
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{"Ĭ","I"},
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{"Ŏ","O"},
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{"Ŭ","U"},
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/* ^ Circumflex */
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{"Â","A"},
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{"Ĉ","C"},
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{"Ê","E"},
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{"Ĝ","G"},
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{"Ĥ","H"},
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{"Î","I"},
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{"Ĵ","J"},
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{"Ô","O"},
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{"Ŝ","S"},
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{"Û","U"},
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{"Ŵ","W"},
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{"Ŷ","Y"},
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/* ¸ Cedilla */
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{"Ç","C"},
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{"Ģ","G","GJ"},
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{"Ķ","K","KJ"},
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{"Ļ","L","LJ"},
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{"Ņ","N","NJ"},
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{"Ŗ","R"},
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{"Ş","S"},
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{"Ţ","T"},
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/* ~ Tilde */
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{"Ã","A"},
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{"Ĩ","I"},
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{"Ñ","N"},
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{"Õ","O"},
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{"Ũ","U"},
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/* ` Grave */
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{"À","A"},
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{"È","E"},
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{"Ì","I"},
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{"Ò","O"},
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{"Ù","U"},
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/* ligatures */
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{"Æ","A","AE"},
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{"IJ","IJ"},
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{"Œ","O","OE"},
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/* special letters */
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{"Ð","D","DH"}, /* Icelandic Eth, not to be confused with the similar-looking Croatian Dj */
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{"Ŋ","N","NG"},
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{"Þ","T","TH"},
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/* Small Diacritics */
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/* ¨ Diaresis */
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{"ä","a","ae"},
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{"ë","e"},
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{"ï","i"},
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{"ö","o","oe"},
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{"ü","u","ue"},
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{"ÿ","y"},
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/* ˝ Double Acute Accent */
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{"ő","o","ö"},
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{"ű","u","ü"},
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/* ´ Acute Accent */
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{"á","a"},
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{"ć","c"},
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{"é","e"},
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{"í","i"},
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{"ĺ","l"},
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{"ń","n"},
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{"ó","o"},
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{"ŕ","r"},
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{"ś","s"},
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{"ú","u"},
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{"ý","y"},
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{"ź","z"},
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/* ˛ Ogonek (nosinė) */
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{"ą","a"},
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{"ę","e"},
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{"į","i"},
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{"ų","u"},
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/* ˙ Dot (and dotless i) */
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{"ċ","c"},
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{"ė","e"},
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{"ġ","g"},
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{"ı","i"},
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{"ŀ","l"},
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{"ż","z"},
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/* – Stroke */
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{"đ","d","dj"},
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{"ħ","h"},
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{"ł","l"},
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{"ŧ","t"},
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/* ˚ Ring */
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{"å","a", "aa"},
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{"ů","u"},
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/* ˇ Caron (haček, paukščiukas) */
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{"č","c"},
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{"ď","d"},
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{"ě","e"},
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{"ľ","l"},
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{"ň","n"},
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{"ř","r"},
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{"š","s"},
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{"ť","t"},
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{"ž","z"},
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/* / Slash */
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{"ø","o", "oe"},
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/* Macron */
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{"ā","a","aa"},
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{"ē","e","ee"},
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{"ī","i","ii"},
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{"ō","o","oo"},
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{"ū","u","uu"},
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/* ˘ Brevis */
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{"ă","a"},
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{"ĕ","e"},
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{"ğ","g"},
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{"ĭ","i"},
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{"ŏ","o"},
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{"ŭ","u"},
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/* ^ Circumflex */
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{"â","a"},
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{"ĉ","c"},
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{"ê","e"},
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{"ĝ","g"},
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{"ĥ","h"},
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{"î","i"},
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{"ĵ","j"},
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{"ô","o"},
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{"ŝ","s"},
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{"û","u"},
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{"ŵ","w"},
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{"ŷ","y"},
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/* ¸ Cedilla */
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{"ç","c"},
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{"ģ","g","gj"},
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{"ķ","k","kj"},
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{"ļ","l","lj"},
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{"ņ","n","nj"},
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{"ŗ","r"},
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{"ş","s"},
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{"ţ","t"},
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/* ~ Tilde */
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{"ã","a"},
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{"ĩ","i"},
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{"õ","o"},
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{"ñ","n"},
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{"ũ","u"},
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/* ` Grave */
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{"à","a"},
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{"è","e"},
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{"ì","i"},
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{"ò","o"},
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{"ù","u"},
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/* ligatures */
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{"æ","a","ae"},
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{"ij","ij"},
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{"œ","o","oe"},
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{"ß","s","ss"},
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/* special letters */
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{"ð","d","dh"},
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{"ŋ","n","ng"},
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{"þ","t","th"},
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/* Cyrillic capital */
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{"Ё","Е"},
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{"Й","И"},
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{"І","I"},
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{"Ї","I"},
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{"Ў","У"},
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{"Є","Е","Э"},
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{"Ґ","Г"},
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{"Ѓ","Г"},
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{"Ђ","Д"},
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{"Ќ","К"},
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//{"Љ","Л","ЛЬ"},
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//{"Њ","Н","НЬ"},
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{"Џ","Ц"},
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/* Cyrillic small */
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{"ё","е"},
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{"й","и"},
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{"і","i"},
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{"ї","i"},
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{"ў","у"},
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//{"є","е","э"},
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{"ґ","г"},
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{"ѓ","г"},
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{"ђ","д"},
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{"ќ","к"},
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//{"љ","л","ль"},
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//{"њ","н","нь"},
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{"џ","ц"},
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};
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static GHashTable *special_hash;
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/* Array of strings for case conversion
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* Even elements of array are strings of upper-case letters
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* Odd elements of array are strings of lower-case letters, in the order corresponding to directly preceeding even element.
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* Last element of array should be NULL.
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*/
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static const char *upperlower[]={
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/*Latin diacritics*/
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"ÄËÏÖÜŸŐŰÁĆÉÍĹŃÓŔŚÚÝŹĄĘĮŲĊĖĠİĿŻĐĦŁŦÅŮČĎĚĽŇŘŠŤŽØĀĒĪŌŪĂĔĞĬŎŬÂĈÊĜĤÎĴÔŜÛŴŶÇĢĶĻŅŖŞŢÃĨÑÕŨÀÈÌÒÙÆIJŒÐŊÞ",
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"äëïöüÿőűáćéíĺńóŕśúýźąęįųċėġıŀżđħłŧåůčďěľňřšťžøāēīōūăĕğĭŏŭâĉêĝĥîĵôŝûŵŷçģķļņŗşţãĩõñũàèìòùæijœðŋþ",
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/*Cyrillic*/
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"АБВГҐЃДЂЕЄЁЖЗИЙКЌЛЉМНЊОПРСТУФХЦЏЧШЩЪЫЬЭЮЯІЇЎ",
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"абвгґѓдђеєёжзийкќлљмнњопрстуфхцџчшщъыьэюяіїў",
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NULL
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};
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static GHashTable *casefold_hash;
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struct special_pos {
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char **variants;
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int n;
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char *s1, *s2;
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};
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static char**
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linguistics_get_special(char *str, char *end)
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{
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char buf[10];
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int len;
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if(!end)
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end=g_utf8_find_next_char(str,NULL);
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len=end-str+1;
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g_strlcpy(buf,str,len>10?10:len);
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return g_hash_table_lookup(special_hash,buf);
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}
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/*
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* @brief Prepare an utf-8 string for case insensitive comparison.
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* @param in String to prepeare.
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* @return String prepared for case insensitive search. Result shoud be g_free()d after use.
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*/
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char*
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linguistics_casefold(char *in)
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{
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int len=strlen(in);
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char *src=in;
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char *ret=g_new(char,len+1);
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char *dest=ret;
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char buf[10];
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while(*src && dest-ret<len){
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if(*src>='A' && *src<='Z') {
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*dest++=*src++ - 'A' + 'a';
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} else if (!(*src&128)) {
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*dest++=*src++;
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} else {
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int charlen;
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char *tmp, *folded;
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tmp=g_utf8_find_next_char(src,NULL);
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charlen=tmp-src+1;
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g_strlcpy(buf,src,charlen>10?10:charlen);
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folded=g_hash_table_lookup(casefold_hash,buf);
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if(folded)
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{
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while(*folded && dest-ret<len)
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*dest++=*folded++;
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src=tmp;
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}
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else
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{
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while(src<tmp && dest-ret<len)
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*dest++=*src++;
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}
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}
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}
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*dest=0;
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if(*src)
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dbg(0,"Casefolded string for '%s' needs extra space, result is trucated to '%s'.\n",in,ret);
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return ret;
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}
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/**
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* @brief Compare two strings using special characters expansion.
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*
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* @param str first string to compare, special characters are expanded.
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* @param match second string to compare, special characters are not expanded.
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* @param partial if = 1 then str string may be shorter than match string, in which case the rest from str isn't analysed.
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* @return =0 strings matched, =1 not matched. Note this function return value is not fully compatible with strcmp().
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*/
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|
362 |
|
|
int
|
363 |
|
|
linguistics_compare(char *str, char *match, int partial)
|
364 |
|
|
{
|
365 |
|
|
char *s1=str, *s2=match;
|
366 |
|
|
char **sp;
|
367 |
|
|
int ret=0;
|
368 |
|
|
int got_match;
|
369 |
|
|
GList *l=NULL;
|
370 |
|
|
while (*s1 && *s2) {
|
371 |
|
|
int j;
|
372 |
|
|
struct special_pos *spp;
|
373 |
|
|
char *utf_boundary, *tmp;
|
374 |
|
|
/* Skip all matching chars */
|
375 |
|
|
for(j=0;s1[j] && s1[j]==s2[j];j++);
|
376 |
|
|
if(!s2[j] && (partial || !s1[j])) {
|
377 |
|
|
/* MATCH! */
|
378 |
|
|
ret=0;
|
379 |
|
|
break;
|
380 |
|
|
}
|
381 |
|
|
/* Find beginning of first mismatching utf-8 encoded char */
|
382 |
|
|
utf_boundary=s1;
|
383 |
|
|
while(*(tmp=g_utf8_find_next_char(utf_boundary, NULL))) {
|
384 |
|
|
if(tmp>s1+j)
|
385 |
|
|
break;
|
386 |
|
|
utf_boundary=tmp;
|
387 |
|
|
}
|
388 |
|
|
/* Push first mismatching char to the list if it's a special char */
|
389 |
|
|
sp=linguistics_get_special(utf_boundary,tmp);
|
390 |
zoff99 |
15 |
|
391 |
|
|
if(sp)
|
392 |
|
|
{
|
393 |
zoff99 |
2 |
spp=g_new(struct special_pos,1);
|
394 |
|
|
spp->variants=sp;
|
395 |
|
|
spp->n=1;
|
396 |
|
|
spp->s1=utf_boundary;
|
397 |
|
|
spp->s2=s2+(utf_boundary-s1);
|
398 |
|
|
l=g_list_prepend(l,spp);
|
399 |
|
|
}
|
400 |
|
|
|
401 |
|
|
/* Try to find a match using special char variants from the list */
|
402 |
|
|
got_match=0;
|
403 |
|
|
while(l && !got_match) {
|
404 |
|
|
spp=l->data;
|
405 |
|
|
s1=spp->s1;
|
406 |
|
|
s2=spp->s2;
|
407 |
|
|
while(spp->n<3 && !got_match) {
|
408 |
|
|
char *s=spp->variants[(spp->n)++];
|
409 |
|
|
int len;
|
410 |
|
|
if(!s)
|
411 |
|
|
break;
|
412 |
|
|
len=strlen(s);
|
413 |
|
|
if(!strncmp(s,s2,len)) {
|
414 |
|
|
s2+=len;
|
415 |
|
|
s1+=strlen(spp->variants[0]);
|
416 |
|
|
got_match=1;
|
417 |
|
|
break;
|
418 |
|
|
}
|
419 |
|
|
}
|
420 |
|
|
if(spp->n>=3 || !spp->variants[spp->n]) {
|
421 |
|
|
/* No matches for current top list element, go to the closest special char towards beginning of the string */
|
422 |
|
|
g_free(spp);
|
423 |
|
|
l=g_list_delete_link(l,l);
|
424 |
|
|
}
|
425 |
|
|
}
|
426 |
|
|
if(!got_match) {
|
427 |
|
|
/* NO MATCH
|
428 |
|
|
* FIXME: If we're going to use this function to sort a string list alphabetically we should use
|
429 |
|
|
* utf-aware comparison here.
|
430 |
|
|
*/
|
431 |
|
|
ret=1;
|
432 |
|
|
break;
|
433 |
|
|
}
|
434 |
|
|
}
|
435 |
|
|
while(l) {
|
436 |
|
|
g_free(l->data);
|
437 |
|
|
l=g_list_delete_link(l,l);
|
438 |
|
|
}
|
439 |
|
|
return ret;
|
440 |
|
|
}
|
441 |
|
|
|
442 |
|
|
|
443 |
|
|
char *
|
444 |
|
|
linguistics_expand_special(char *str, int mode)
|
445 |
|
|
{
|
446 |
|
|
char *in=str;
|
447 |
|
|
char *out,*ret;
|
448 |
|
|
int found=0;
|
449 |
|
|
|
450 |
zoff99 |
15 |
if (!str)
|
451 |
|
|
{
|
452 |
|
|
return NULL;
|
453 |
|
|
}
|
454 |
|
|
|
455 |
|
|
ret=g_strdup(str);
|
456 |
|
|
out=ret;
|
457 |
|
|
|
458 |
|
|
if (!mode)
|
459 |
|
|
{
|
460 |
zoff99 |
2 |
return ret;
|
461 |
zoff99 |
15 |
}
|
462 |
zoff99 |
2 |
|
463 |
|
|
while (*in)
|
464 |
|
|
{
|
465 |
|
|
char *next=g_utf8_find_next_char(in, NULL);
|
466 |
|
|
int i,len=next-in;
|
467 |
|
|
int match=0;
|
468 |
|
|
if (len > 1)
|
469 |
|
|
{
|
470 |
|
|
for (i = 0 ; i < sizeof(special)/sizeof(special[0]); i++)
|
471 |
|
|
{
|
472 |
|
|
const char *search=special[i][0];
|
473 |
|
|
if (!strncmp(in,search,len))
|
474 |
|
|
{
|
475 |
|
|
const char *replace=special[i][mode];
|
476 |
|
|
if (replace)
|
477 |
|
|
{
|
478 |
|
|
int replace_len=strlen(replace);
|
479 |
|
|
|
480 |
zoff99 |
15 |
if (replace_len > len)
|
481 |
zoff99 |
2 |
{
|
482 |
zoff99 |
15 |
fprintf(stderr,"* ERROR !! ERROR !! found %s %s %d %s %d\n",in,search,len,replace,replace_len);
|
483 |
zoff99 |
2 |
}
|
484 |
zoff99 |
15 |
dbg_assert(replace_len <= len);
|
485 |
|
|
if (replace_len > len)
|
486 |
|
|
{
|
487 |
|
|
out+=len;
|
488 |
|
|
match=0;
|
489 |
|
|
break;
|
490 |
|
|
}
|
491 |
zoff99 |
2 |
else
|
492 |
|
|
{
|
493 |
zoff99 |
15 |
// fprintf(stderr," GOOD !! GOOD !! found %s %s %d %s %d\n",in,search,len,replace,replace_len);
|
494 |
zoff99 |
2 |
strcpy(out, replace);
|
495 |
|
|
out+=replace_len;
|
496 |
|
|
match=1;
|
497 |
|
|
break;
|
498 |
|
|
}
|
499 |
|
|
}
|
500 |
|
|
}
|
501 |
|
|
}
|
502 |
|
|
}
|
503 |
|
|
|
504 |
|
|
if (match)
|
505 |
|
|
{
|
506 |
|
|
found=1;
|
507 |
|
|
in=next;
|
508 |
|
|
}
|
509 |
|
|
else
|
510 |
|
|
{
|
511 |
|
|
while (len-- > 0)
|
512 |
|
|
{
|
513 |
|
|
*out++=*in++;
|
514 |
|
|
}
|
515 |
|
|
}
|
516 |
|
|
}
|
517 |
|
|
*out++='\0';
|
518 |
|
|
if (!found)
|
519 |
|
|
{
|
520 |
zoff99 |
15 |
if (ret)
|
521 |
|
|
{
|
522 |
|
|
g_free(ret);
|
523 |
|
|
}
|
524 |
zoff99 |
2 |
ret=NULL;
|
525 |
|
|
}
|
526 |
|
|
return ret;
|
527 |
|
|
}
|
528 |
|
|
|
529 |
|
|
char *
|
530 |
|
|
linguistics_next_word(char *str)
|
531 |
|
|
{
|
532 |
zoff99 |
15 |
char* ret=strtok(str, " -/()\"\',.;_[]{}\\");
|
533 |
|
|
return ret;
|
534 |
|
|
|
535 |
|
|
// int len=strcspn(str, " -/()");
|
536 |
|
|
// if (!str[len] || !str[len+1])
|
537 |
|
|
// return NULL;
|
538 |
|
|
// return str+len+1;
|
539 |
|
|
|
540 |
zoff99 |
2 |
}
|
541 |
|
|
|
542 |
|
|
int
|
543 |
|
|
linguistics_search(char *str)
|
544 |
|
|
{
|
545 |
|
|
if (!g_strcasecmp(str,"str"))
|
546 |
|
|
return 0;
|
547 |
|
|
if (!g_strcasecmp(str,"str."))
|
548 |
|
|
return 0;
|
549 |
|
|
if (!g_strcasecmp(str,"strasse"))
|
550 |
|
|
return 0;
|
551 |
|
|
if (!g_strcasecmp(str,"weg"))
|
552 |
|
|
return 0;
|
553 |
|
|
return 1;
|
554 |
|
|
}
|
555 |
|
|
|
556 |
|
|
/**
|
557 |
|
|
* @brief Copy one utf8 encoded char to newly allocated buffer.
|
558 |
|
|
*
|
559 |
|
|
* @param s pointer to the beginning of the char.
|
560 |
|
|
* @return newly allocated nul-terminated string containing one utf8 encoded character.
|
561 |
|
|
*/
|
562 |
|
|
static char
|
563 |
|
|
*linguistics_dup_utf8_char(const char *s)
|
564 |
|
|
{
|
565 |
|
|
char *ret, *next;
|
566 |
|
|
next=g_utf8_find_next_char(s,NULL);
|
567 |
|
|
ret=g_new(char, next-s+1);
|
568 |
|
|
g_strlcpy(ret,s,next-s+1);
|
569 |
|
|
return ret;
|
570 |
|
|
}
|
571 |
|
|
|
572 |
|
|
void
|
573 |
|
|
linguistics_init(void)
|
574 |
|
|
{
|
575 |
|
|
int i;
|
576 |
|
|
special_hash=g_hash_table_new(g_str_hash, g_str_equal);
|
577 |
|
|
casefold_hash=g_hash_table_new(g_str_hash, g_str_equal);
|
578 |
|
|
|
579 |
|
|
for (i = 0 ; i < sizeof(special)/sizeof(special[0]); i++)
|
580 |
zoff99 |
15 |
{
|
581 |
zoff99 |
2 |
g_hash_table_insert(special_hash,(gpointer)special[i][0],special[i]);
|
582 |
zoff99 |
15 |
}
|
583 |
zoff99 |
2 |
|
584 |
zoff99 |
15 |
for (i = 0 ; upperlower[i]; i+=2)
|
585 |
|
|
{
|
586 |
zoff99 |
2 |
int j,k;
|
587 |
zoff99 |
15 |
for(j=0,k=0;upperlower[i][j] && upperlower[i+1][k];)
|
588 |
|
|
{
|
589 |
zoff99 |
2 |
char *s1=linguistics_dup_utf8_char(upperlower[i]+j);
|
590 |
|
|
char *s2=linguistics_dup_utf8_char(upperlower[i+1]+k);
|
591 |
|
|
g_hash_table_insert(casefold_hash,s1,s2);
|
592 |
|
|
j+=strlen(s1);
|
593 |
|
|
k+=strlen(s2);
|
594 |
|
|
}
|
595 |
|
|
}
|
596 |
|
|
}
|
597 |
|
|
|