2008-01-13 06:57:09 +01:00
|
|
|
/* phonetic.c - generic replacement aglogithms for phonetic transformation
|
|
|
|
Copyright (C) 2000 Bjoern Jacke
|
|
|
|
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
|
|
modify it under the terms of the GNU Lesser General Public
|
|
|
|
License version 2.1 as published by the Free Software Foundation;
|
|
|
|
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
Lesser General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
|
|
License along with this library; If not, see
|
|
|
|
<http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
Changelog:
|
|
|
|
|
|
|
|
2000-01-05 Bjoern Jacke <bjoern at j3e.de>
|
|
|
|
Initial Release insprired by the article about phonetic
|
|
|
|
transformations out of c't 25/1999
|
|
|
|
|
|
|
|
2007-07-26 Bjoern Jacke <bjoern at j3e.de>
|
|
|
|
Released under MPL/GPL/LGPL tri-license for Hunspell
|
|
|
|
|
|
|
|
2007-08-23 Laszlo Nemeth <nemeth at OOo>
|
|
|
|
Porting from Aspell to Hunspell using C-like structs
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <ctype.h>
|
|
|
|
|
|
|
|
#include "csutil.hxx"
|
|
|
|
#include "phonet.hxx"
|
|
|
|
|
|
|
|
void init_phonet_hash(phonetable & parms)
|
|
|
|
{
|
|
|
|
int i, k;
|
|
|
|
|
2012-10-08 21:20:19 +02:00
|
|
|
for (i = 0; i < HASHSIZE; i++) {
|
2008-01-13 06:57:09 +01:00
|
|
|
parms.hash[i] = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; parms.rules[i][0] != '\0'; i += 2) {
|
|
|
|
/** set hash value **/
|
|
|
|
k = (unsigned char) parms.rules[i][0];
|
|
|
|
|
|
|
|
if (parms.hash[k] < 0) {
|
|
|
|
parms.hash[k] = i;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-10-08 21:20:19 +02:00
|
|
|
// like strcpy but safe if the strings overlap
|
|
|
|
// but only if dest < src
|
|
|
|
static inline void strmove(char * dest, char * src) {
|
|
|
|
while (*src)
|
|
|
|
*dest++ = *src++;
|
|
|
|
*dest = '\0';
|
|
|
|
}
|
|
|
|
|
|
|
|
static int myisalpha(char ch) {
|
|
|
|
if ((unsigned char) ch < 128) return isalpha(ch);
|
|
|
|
return 1;
|
|
|
|
}
|
2008-01-13 06:57:09 +01:00
|
|
|
|
|
|
|
/* phonetic transcription algorithm */
|
|
|
|
/* see: http://aspell.net/man-html/Phonetic-Code.html */
|
|
|
|
/* convert string to uppercase before this call */
|
|
|
|
int phonet (const char * inword, char * target,
|
|
|
|
int len,
|
|
|
|
phonetable & parms)
|
|
|
|
{
|
|
|
|
/** Do phonetic transformation. **/
|
|
|
|
/** "len" = length of "inword" incl. '\0'. **/
|
|
|
|
|
|
|
|
/** result: >= 0: length of "target" **/
|
|
|
|
/** otherwise: error **/
|
|
|
|
|
|
|
|
int i,j,k=0,n,p,z;
|
|
|
|
int k0,n0,p0=-333,z0;
|
|
|
|
char c, c0;
|
|
|
|
const char * s;
|
|
|
|
typedef unsigned char uchar;
|
|
|
|
char word[MAXPHONETUTF8LEN + 1];
|
|
|
|
if (len == -1) len = strlen(inword);
|
|
|
|
if (len > MAXPHONETUTF8LEN) return 0;
|
|
|
|
strcpy(word, inword);
|
|
|
|
|
|
|
|
/** check word **/
|
|
|
|
i = j = z = 0;
|
|
|
|
while ((c = word[i]) != '\0') {
|
|
|
|
n = parms.hash[(uchar) c];
|
|
|
|
z0 = 0;
|
|
|
|
|
|
|
|
if (n >= 0) {
|
|
|
|
/** check all rules for the same letter **/
|
|
|
|
while (parms.rules[n][0] == c) {
|
|
|
|
|
|
|
|
/** check whole string **/
|
|
|
|
k = 1; /** number of found letters **/
|
|
|
|
p = 5; /** default priority **/
|
|
|
|
s = parms.rules[n];
|
|
|
|
s++; /** important for (see below) "*(s-1)" **/
|
|
|
|
|
|
|
|
while (*s != '\0' && word[i+k] == *s
|
2012-10-08 21:20:19 +02:00
|
|
|
&& !isdigit ((unsigned char) *s) && strchr ("(-<^$", *s) == NULL) {
|
2008-01-13 06:57:09 +01:00
|
|
|
k++;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
if (*s == '(') {
|
|
|
|
/** check letters in "(..)" **/
|
2012-10-08 21:20:19 +02:00
|
|
|
if (myisalpha(word[i+k]) // ...could be implied?
|
2008-01-13 06:57:09 +01:00
|
|
|
&& strchr(s+1, word[i+k]) != NULL) {
|
|
|
|
k++;
|
|
|
|
while (*s != ')')
|
|
|
|
s++;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
p0 = (int) *s;
|
|
|
|
k0 = k;
|
|
|
|
while (*s == '-' && k > 1) {
|
|
|
|
k--;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
if (*s == '<')
|
|
|
|
s++;
|
2012-10-08 21:20:19 +02:00
|
|
|
if (isdigit ((unsigned char) *s)) {
|
2008-01-13 06:57:09 +01:00
|
|
|
/** determine priority **/
|
|
|
|
p = *s - '0';
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
if (*s == '^' && *(s+1) == '^')
|
|
|
|
s++;
|
|
|
|
|
|
|
|
if (*s == '\0'
|
|
|
|
|| (*s == '^'
|
2012-10-08 21:20:19 +02:00
|
|
|
&& (i == 0 || ! myisalpha(word[i-1]))
|
2008-01-13 06:57:09 +01:00
|
|
|
&& (*(s+1) != '$'
|
2012-10-08 21:20:19 +02:00
|
|
|
|| (! myisalpha(word[i+k0]) )))
|
2008-01-13 06:57:09 +01:00
|
|
|
|| (*s == '$' && i > 0
|
2012-10-08 21:20:19 +02:00
|
|
|
&& myisalpha(word[i-1])
|
|
|
|
&& (! myisalpha(word[i+k0]) )))
|
2008-01-13 06:57:09 +01:00
|
|
|
{
|
|
|
|
/** search for followup rules, if: **/
|
|
|
|
/** parms.followup and k > 1 and NO '-' in searchstring **/
|
|
|
|
c0 = word[i+k-1];
|
|
|
|
n0 = parms.hash[(uchar) c0];
|
|
|
|
|
|
|
|
// if (parms.followup && k > 1 && n0 >= 0
|
|
|
|
if (k > 1 && n0 >= 0
|
|
|
|
&& p0 != (int) '-' && word[i+k] != '\0') {
|
|
|
|
/** test follow-up rule for "word[i+k]" **/
|
|
|
|
while (parms.rules[n0][0] == c0) {
|
|
|
|
|
|
|
|
/** check whole string **/
|
|
|
|
k0 = k;
|
|
|
|
p0 = 5;
|
|
|
|
s = parms.rules[n0];
|
|
|
|
s++;
|
|
|
|
while (*s != '\0' && word[i+k0] == *s
|
2012-10-08 21:20:19 +02:00
|
|
|
&& ! isdigit((unsigned char) *s) && strchr("(-<^$",*s) == NULL) {
|
2008-01-13 06:57:09 +01:00
|
|
|
k0++;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
if (*s == '(') {
|
|
|
|
/** check letters **/
|
2012-10-08 21:20:19 +02:00
|
|
|
if (myisalpha(word[i+k0])
|
2008-01-13 06:57:09 +01:00
|
|
|
&& strchr (s+1, word[i+k0]) != NULL) {
|
|
|
|
k0++;
|
|
|
|
while (*s != ')' && *s != '\0')
|
|
|
|
s++;
|
|
|
|
if (*s == ')')
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (*s == '-') {
|
|
|
|
/** "k0" gets NOT reduced **/
|
|
|
|
/** because "if (k0 == k)" **/
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
if (*s == '<')
|
|
|
|
s++;
|
2012-10-08 21:20:19 +02:00
|
|
|
if (isdigit ((unsigned char) *s)) {
|
2008-01-13 06:57:09 +01:00
|
|
|
p0 = *s - '0';
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (*s == '\0'
|
|
|
|
/** *s == '^' cuts **/
|
2012-10-08 21:20:19 +02:00
|
|
|
|| (*s == '$' && ! myisalpha(word[i+k0])))
|
2008-01-13 06:57:09 +01:00
|
|
|
{
|
|
|
|
if (k0 == k) {
|
|
|
|
/** this is just a piece of the string **/
|
|
|
|
n0 += 2;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p0 < p) {
|
|
|
|
/** priority too low **/
|
|
|
|
n0 += 2;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
/** rule fits; stop search **/
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
n0 += 2;
|
|
|
|
} /** End of "while (parms.rules[n0][0] == c0)" **/
|
|
|
|
|
|
|
|
if (p0 >= p && parms.rules[n0][0] == c0) {
|
|
|
|
n += 2;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
} /** end of follow-up stuff **/
|
|
|
|
|
|
|
|
/** replace string **/
|
|
|
|
s = parms.rules[n+1];
|
|
|
|
p0 = (parms.rules[n][0] != '\0'
|
|
|
|
&& strchr (parms.rules[n]+1,'<') != NULL) ? 1:0;
|
|
|
|
if (p0 == 1 && z == 0) {
|
|
|
|
/** rule with '<' is used **/
|
|
|
|
if (j > 0 && *s != '\0'
|
|
|
|
&& (target[j-1] == c || target[j-1] == *s)) {
|
|
|
|
j--;
|
|
|
|
}
|
|
|
|
z0 = 1;
|
|
|
|
z = 1;
|
|
|
|
k0 = 0;
|
|
|
|
while (*s != '\0' && word[i+k0] != '\0') {
|
|
|
|
word[i+k0] = *s;
|
|
|
|
k0++;
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
if (k > k0)
|
|
|
|
strmove (&word[0]+i+k0, &word[0]+i+k);
|
|
|
|
|
|
|
|
/** new "actual letter" **/
|
|
|
|
c = word[i];
|
|
|
|
}
|
|
|
|
else { /** no '<' rule used **/
|
|
|
|
i += k - 1;
|
|
|
|
z = 0;
|
|
|
|
while (*s != '\0'
|
|
|
|
&& *(s+1) != '\0' && j < len) {
|
|
|
|
if (j == 0 || target[j-1] != *s) {
|
|
|
|
target[j] = *s;
|
|
|
|
j++;
|
|
|
|
}
|
|
|
|
s++;
|
|
|
|
}
|
|
|
|
/** new "actual letter" **/
|
|
|
|
c = *s;
|
|
|
|
if (parms.rules[n][0] != '\0'
|
|
|
|
&& strstr (parms.rules[n]+1, "^^") != NULL) {
|
|
|
|
if (c != '\0') {
|
|
|
|
target[j] = c;
|
|
|
|
j++;
|
|
|
|
}
|
|
|
|
strmove (&word[0], &word[0]+i+1);
|
|
|
|
i = 0;
|
|
|
|
z0 = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
} /** end of follow-up stuff **/
|
|
|
|
n += 2;
|
|
|
|
} /** end of while (parms.rules[n][0] == c) **/
|
|
|
|
} /** end of if (n >= 0) **/
|
|
|
|
if (z0 == 0) {
|
|
|
|
// if (k && (assert(p0!=-333),!p0) && j < len && c != '\0'
|
|
|
|
// && (!parms.collapse_result || j == 0 || target[j-1] != c)){
|
|
|
|
if (k && !p0 && j < len && c != '\0'
|
|
|
|
&& (1 || j == 0 || target[j-1] != c)){
|
|
|
|
/** condense only double letters **/
|
|
|
|
target[j] = c;
|
|
|
|
///printf("\n setting \n");
|
|
|
|
j++;
|
|
|
|
}
|
|
|
|
|
|
|
|
i++;
|
|
|
|
z = 0;
|
|
|
|
k=0;
|
|
|
|
}
|
|
|
|
} /** end of while ((c = word[i]) != '\0') **/
|
|
|
|
|
|
|
|
target[j] = '\0';
|
|
|
|
return (j);
|
|
|
|
|
|
|
|
} /** end of function "phonet" **/
|