-/* $Id: icu_I18N.c,v 1.1 2007-04-30 13:56:52 marc Exp $
+/* $Id: icu_I18N.c,v 1.13 2007-05-15 15:11:42 marc Exp $
Copyright (c) 2006-2007, Index Data.
-This file is part of Pazpar2.
+ This file is part of Pazpar2.
-Pazpar2 is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
+ Pazpar2 is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 2, or (at your option) any later
+ version.
-Pazpar2 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 General Public License
-for more details.
+ Pazpar2 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 General Public License
+ for more details.
-You should have received a copy of the GNU General Public License
-along with Pazpar2; see the file LICENSE. If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
- */
+ You should have received a copy of the GNU General Public License
+ along with Pazpar2; see the file LICENSE. If not, write to the
+ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA.
+*/
#if HAVE_CONFIG_H
#include "cconfig.h"
#include <yaz/log.h>
#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
#include <unicode/ustring.h> /* some more string fcns*/
+#include <unicode/uchar.h> /* char names */
+
//#include <unicode/ustdio.h>
//#include <unicode/utypes.h> /* Basic ICU data types */
-//#include <unicode/ucol.h>
+#include <unicode/ucol.h>
//#include <unicode/ucnv.h> /* C Converter API */
-//#include <unicode/uchar.h> /* char names */
//#include <unicode/uloc.h>
//#include <unicode/ubrk.h>
/* #include <unicode/unistr.h> */
+
int icu_check_status (UErrorCode status)
{
- if(U_FAILURE(status))
- yaz_log(YLOG_WARN,
- "ICU Error: %d %s\n", status, u_errorName(status));
- return status;
+ if(U_FAILURE(status)){
+ yaz_log(YLOG_WARN,
+ "ICU: %d %s\n", status, u_errorName(status));
+ return 0;
+ }
+ return 1;
+
}
-UChar* icu_utf16_from_utf8(UChar *utf16,
- int32_t utf16_cap,
- int32_t *utf16_len,
- const char *utf8)
+
+struct icu_buf_utf16 * icu_buf_utf16_create(size_t capacity)
{
- size_t utf8_len = strlen(utf8);
- return icu_utf16_from_utf8n(utf16, utf16_cap, utf16_len,
- utf8, utf8_len);
-}
+ struct icu_buf_utf16 * buf16
+ = (struct icu_buf_utf16 *) malloc(sizeof(struct icu_buf_utf16));
+ buf16->utf16 = 0;
+ buf16->utf16_len = 0;
+ buf16->utf16_cap = 0;
-UChar* icu_utf16_from_utf8n(UChar *utf16,
- int32_t utf16_cap,
- int32_t *utf16_len,
- const char *utf8,
- size_t utf8_len)
+ if (capacity > 0){
+ buf16->utf16 = (UChar *) malloc(sizeof(UChar) * capacity);
+ buf16->utf16[0] = (UChar) 0;
+ buf16->utf16_cap = capacity;
+ }
+ return buf16;
+};
+
+
+struct icu_buf_utf16 * icu_buf_utf16_resize(struct icu_buf_utf16 * buf16,
+ size_t capacity)
{
- UErrorCode status = U_ZERO_ERROR;
- u_strFromUTF8(utf16, utf16_cap, utf16_len, utf8, (int32_t) utf8_len,
- &status);
- if (U_ZERO_ERROR != icu_check_status(status))
+ if (buf16){
+ if (capacity > 0){
+ if (0 == buf16->utf16)
+ buf16->utf16 = (UChar *) malloc(sizeof(UChar) * capacity);
+ else
+ buf16->utf16
+ = (UChar *) realloc(buf16->utf16, sizeof(UChar) * capacity);
+ buf16->utf16[0] = (UChar) 0;
+ buf16->utf16_len = 0;
+ buf16->utf16_cap = capacity;
+ }
+ else {
+ if (buf16->utf16)
+ free(buf16->utf16);
+ buf16->utf16 = 0;
+ buf16->utf16_len = 0;
+ buf16->utf16_cap = 0;
+ }
+ }
+
+ return buf16;
+};
+
+
+struct icu_buf_utf16 * icu_buf_utf16_copy(struct icu_buf_utf16 * dest16,
+ struct icu_buf_utf16 * src16)
+{
+ if(!dest16 || !src16
+ || dest16 == src16)
return 0;
- else
- return utf16;
-}
+ if (dest16->utf16_cap < src16->utf16_len)
+ icu_buf_utf16_resize(dest16, src16->utf16_len * 2);
+
+ u_strncpy(dest16->utf16, src16->utf16, src16->utf16_len);
+
+ return dest16;
+};
+
+
+void icu_buf_utf16_destroy(struct icu_buf_utf16 * buf16)
+{
+ if (buf16){
+ if (buf16->utf16)
+ free(buf16->utf16);
+ free(buf16);
+ }
+};
+
+
+
+
+
+
+struct icu_buf_utf8 * icu_buf_utf8_create(size_t capacity)
+{
+ struct icu_buf_utf8 * buf8
+ = (struct icu_buf_utf8 *) malloc(sizeof(struct icu_buf_utf8));
+
+ buf8->utf8 = 0;
+ buf8->utf8_len = 0;
+ buf8->utf8_cap = 0;
+
+ if (capacity > 0){
+ buf8->utf8 = (uint8_t *) malloc(sizeof(uint8_t) * capacity);
+ buf8->utf8[0] = (uint8_t) 0;
+ buf8->utf8_cap = capacity;
+ }
+ return buf8;
+};
-char* icu_utf16_to_utf8(char *utf8,
- size_t utf8_cap,
- size_t *utf8_len,
- const UChar *utf16,
- int32_t utf16_len)
+
+
+struct icu_buf_utf8 * icu_buf_utf8_resize(struct icu_buf_utf8 * buf8,
+ size_t capacity)
{
- UErrorCode status = U_ZERO_ERROR;
- u_strToUTF8(utf8, (int32_t) utf8_cap, (int32_t *)utf8_len,
- utf16, utf16_len, &status);
- if (U_ZERO_ERROR != icu_check_status(status))
+ if (buf8){
+ if (capacity > 0){
+ if (0 == buf8->utf8)
+ buf8->utf8 = (uint8_t *) malloc(sizeof(uint8_t) * capacity);
+ else
+ buf8->utf8
+ = (uint8_t *) realloc(buf8->utf8,
+ sizeof(uint8_t) * capacity);
+ buf8->utf8[0] = (uint8_t) 0;
+ buf8->utf8_len = 0;
+ buf8->utf8_cap = capacity;
+ }
+ else {
+ if (buf8->utf8)
+ free(buf8->utf8);
+ buf8->utf8 = 0;
+ buf8->utf8_len = 0;
+ buf8->utf8_cap = 0;
+ }
+ }
+
+ return buf8;
+};
+
+
+struct icu_buf_utf8 * icu_buf_utf8_copy(struct icu_buf_utf8 * dest8,
+ struct icu_buf_utf8 * src8)
+{
+ if(!dest8 || !src8
+ || dest8 == src8)
return 0;
- else
- return utf8;
-}
+
+
+ if (dest8->utf8_cap < src8->utf8_len)
+ icu_buf_utf8_resize(dest8, src8->utf8_len * 2);
+
+ strncpy((char*) dest8->utf8, (char*) src8->utf8, src8->utf8_len);
+
+ return dest8;
+};
+
+
+
+void icu_buf_utf8_destroy(struct icu_buf_utf8 * buf8)
+{
+ if (buf8){
+ if (buf8->utf8)
+ free(buf8->utf8);
+ free(buf8);
+ }
+};
+
+
+
+UErrorCode icu_utf16_from_utf8(struct icu_buf_utf16 * dest16,
+ struct icu_buf_utf8 * src8,
+ UErrorCode * status)
+{
+ int32_t utf16_len = 0;
+
+ u_strFromUTF8(dest16->utf16, dest16->utf16_cap,
+ &utf16_len,
+ (const char *) src8->utf8, src8->utf8_len, status);
+
+ // check for buffer overflow, resize and retry
+ if (*status == U_BUFFER_OVERFLOW_ERROR
+ //|| dest16->utf16_len > dest16->utf16_cap
+ ){
+ icu_buf_utf16_resize(dest16, utf16_len * 2);
+ *status = U_ZERO_ERROR;
+ u_strFromUTF8(dest16->utf16, dest16->utf16_cap,
+ &utf16_len,
+ (const char *) src8->utf8, src8->utf8_len, status);
+ }
+
+ //if (*status != U_BUFFER_OVERFLOW_ERROR
+ if (U_SUCCESS(*status)
+ && utf16_len < dest16->utf16_cap)
+ dest16->utf16_len = utf16_len;
+ else {
+ dest16->utf16[0] = (UChar) 0;
+ dest16->utf16_len = 0;
+ }
+
+ return *status;
+};
+
-int32_t icu_utf16_casemap(UChar *dest16, int32_t dest16_cap,
- const UChar *src16, int32_t src16_len,
- const char *locale, char action)
+UErrorCode icu_utf16_from_utf8_cstr(struct icu_buf_utf16 * dest16,
+ const char * src8cstr,
+ UErrorCode * status)
+{
+ size_t src8cstr_len = 0;
+ int32_t utf16_len = 0;
+
+ src8cstr_len = strlen(src8cstr);
+
+ u_strFromUTF8(dest16->utf16, dest16->utf16_cap,
+ &utf16_len,
+ src8cstr, src8cstr_len, status);
+
+ // check for buffer overflow, resize and retry
+ if (*status == U_BUFFER_OVERFLOW_ERROR
+ //|| dest16->utf16_len > dest16->utf16_cap
+ ){
+ icu_buf_utf16_resize(dest16, utf16_len * 2);
+ *status = U_ZERO_ERROR;
+ u_strFromUTF8(dest16->utf16, dest16->utf16_cap,
+ &utf16_len,
+ src8cstr, src8cstr_len, status);
+ }
+
+ // if (*status != U_BUFFER_OVERFLOW_ERROR
+ if (U_SUCCESS(*status)
+ && utf16_len < dest16->utf16_cap)
+ dest16->utf16_len = utf16_len;
+ else {
+ dest16->utf16[0] = (UChar) 0;
+ dest16->utf16_len = 0;
+ }
+
+ return *status;
+};
+
+
+
+
+UErrorCode icu_utf16_to_utf8(struct icu_buf_utf8 * dest8,
+ struct icu_buf_utf16 * src16,
+ UErrorCode * status)
+{
+ int32_t utf8_len = 0;
+
+ u_strToUTF8((char *) dest8->utf8, dest8->utf8_cap,
+ &utf8_len,
+ src16->utf16, src16->utf16_len, status);
+
+ // check for buffer overflow, resize and retry
+ if (*status == U_BUFFER_OVERFLOW_ERROR
+ //|| dest8->utf8_len > dest8->utf8_cap
+ ){
+ icu_buf_utf8_resize(dest8, utf8_len * 2);
+ *status = U_ZERO_ERROR;
+ u_strToUTF8((char *) dest8->utf8, dest8->utf8_cap,
+ &utf8_len,
+ src16->utf16, src16->utf16_len, status);
+
+ }
+
+ //if (*status != U_BUFFER_OVERFLOW_ERROR
+ if (U_SUCCESS(*status)
+ && utf8_len < dest8->utf8_cap)
+ dest8->utf8_len = utf8_len;
+ else {
+ dest8->utf8[0] = (uint8_t) 0;
+ dest8->utf8_len = 0;
+ }
+
+ return *status;
+};
+
+
+
+int icu_utf16_casemap(struct icu_buf_utf16 * dest16,
+ struct icu_buf_utf16 * src16,
+ const char *locale, char action,
+ UErrorCode *status)
{
- UErrorCode status = U_ZERO_ERROR;
int32_t dest16_len = 0;
switch(action) {
case 'l':
- dest16_len = u_strToLower(dest16, dest16_cap, src16, src16_len,
- locale, &status);
+ dest16_len = u_strToLower(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ locale, status);
break;
case 'u':
- dest16_len = u_strToUpper(dest16, dest16_cap, src16, src16_len,
- locale, &status);
+ dest16_len = u_strToUpper(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ locale, status);
break;
case 't':
- dest16_len = u_strToTitle(dest16, dest16_cap, src16, src16_len,
- 0, locale, &status);
+ dest16_len = u_strToTitle(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ 0, locale, status);
break;
case 'f':
- dest16_len = u_strFoldCase(dest16, dest16_cap, src16, src16_len,
- U_FOLD_CASE_DEFAULT, &status);
+ dest16_len = u_strFoldCase(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ U_FOLD_CASE_DEFAULT, status);
break;
default:
+ return U_UNSUPPORTED_ERROR;
+ break;
+ }
+
+ // check for buffer overflow, resize and retry
+ if (*status == U_BUFFER_OVERFLOW_ERROR
+ && dest16 != src16 // do not resize if in-place conversion
+ //|| dest16_len > dest16->utf16_cap
+ ){
+ icu_buf_utf16_resize(dest16, dest16_len * 2);
+ *status = U_ZERO_ERROR;
+
+
+ switch(action) {
+ case 'l':
+ dest16_len = u_strToLower(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ locale, status);
+ break;
+ case 'u':
+ dest16_len = u_strToUpper(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ locale, status);
+ break;
+ case 't':
+ dest16_len = u_strToTitle(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ 0, locale, status);
+ break;
+ case 'f':
+ dest16_len = u_strFoldCase(dest16->utf16, dest16->utf16_cap,
+ src16->utf16, src16->utf16_len,
+ U_FOLD_CASE_DEFAULT, status);
+ break;
+
+ default:
+ return U_UNSUPPORTED_ERROR;
+ break;
+ }
+ }
+
+ if (U_SUCCESS(*status)
+ && dest16_len < dest16->utf16_cap)
+ dest16->utf16_len = dest16_len;
+ else {
+ dest16->utf16[0] = (UChar) 0;
+ dest16->utf16_len = 0;
+ }
+
+ return *status;
+};
+
+
+
+UErrorCode icu_sortkey8_from_utf16(UCollator *coll,
+ struct icu_buf_utf8 * dest8,
+ struct icu_buf_utf16 * src16,
+ UErrorCode * status)
+{
+
+ int32_t sortkey_len = 0;
+
+ sortkey_len = ucol_getSortKey(coll, src16->utf16, src16->utf16_len,
+ dest8->utf8, dest8->utf8_cap);
+
+ // check for buffer overflow, resize and retry
+ if (sortkey_len > dest8->utf8_cap) {
+ icu_buf_utf8_resize(dest8, sortkey_len * 2);
+ sortkey_len = ucol_getSortKey(coll, src16->utf16, src16->utf16_len,
+ dest8->utf8, dest8->utf8_cap);
+ }
+
+ if (U_SUCCESS(*status)
+ && sortkey_len > 0)
+ dest8->utf8_len = sortkey_len;
+ else {
+ dest8->utf8[0] = (UChar) 0;
+ dest8->utf8_len = 0;
+ }
+
+ return sortkey_len;
+};
+
+
+
+struct icu_tokenizer * icu_tokenizer_create(const char *locale, char action,
+ UErrorCode *status)
+{
+ struct icu_tokenizer * tokenizer
+ = (struct icu_tokenizer *) malloc(sizeof(struct icu_tokenizer));
+
+ strcpy(tokenizer->locale, locale);
+ tokenizer->action = action;
+ tokenizer->bi = 0;
+ tokenizer->buf16 = 0;
+ tokenizer->token_count = 0;
+ tokenizer->token_id = 0;
+ tokenizer->token_start = 0;
+ tokenizer->token_end = 0;
+
+
+ switch(tokenizer->action) {
+ case 'l':
+ tokenizer->bi
+ = ubrk_open(UBRK_LINE, tokenizer->locale,
+ 0, 0, status);
+ break;
+ case 's':
+ tokenizer->bi
+ = ubrk_open(UBRK_SENTENCE, tokenizer->locale,
+ 0, 0, status);
+ break;
+ case 'w':
+ tokenizer->bi
+ = ubrk_open(UBRK_WORD, tokenizer->locale,
+ 0, 0, status);
+ break;
+ case 'c':
+ tokenizer->bi
+ = ubrk_open(UBRK_CHARACTER, tokenizer->locale,
+ 0, 0, status);
+ break;
+ case 't':
+ tokenizer->bi
+ = ubrk_open(UBRK_TITLE, tokenizer->locale,
+ 0, 0, status);
+ break;
+ default:
+ *status = U_UNSUPPORTED_ERROR;
return 0;
break;
}
+
+ // ICU error stuff is a very funny business
+ if (U_SUCCESS(*status))
+ return tokenizer;
+
+ // freeing if failed
+ icu_tokenizer_destroy(tokenizer);
+ return 0;
+};
+
+void icu_tokenizer_destroy(struct icu_tokenizer * tokenizer)
+{
+ if (tokenizer) {
+ if (tokenizer->bi)
+ ubrk_close(tokenizer->bi);
+ free(tokenizer);
+ }
+};
+
+int icu_tokenizer_attach(struct icu_tokenizer * tokenizer,
+ struct icu_buf_utf16 * src16,
+ UErrorCode *status)
+{
+ if (!tokenizer || !tokenizer->bi || !src16)
+ return 0;
+
+
+ tokenizer->buf16 = src16;
+ tokenizer->token_count = 0;
+ tokenizer->token_id = 0;
+ tokenizer->token_start = 0;
+ tokenizer->token_end = 0;
- if (U_ZERO_ERROR != icu_check_status(status))
+ ubrk_setText(tokenizer->bi, src16->utf16, src16->utf16_len, status);
+
+
+ if (U_FAILURE(*status))
return 0;
- else
- return dest16_len;
-}
+ return 1;
+};
-char * icu_casemap(NMEM nmem, char *buf, size_t buf_cap,
- size_t *dest8_len, const char *src8,
- const char *locale, char action)
+int32_t icu_tokenizer_next_token(struct icu_tokenizer * tokenizer,
+ struct icu_buf_utf16 * tkn16,
+ UErrorCode *status)
{
- size_t src8_len = strlen(src8);
- int32_t buf_len = 0;
- char * dest8 = 0;
+ int32_t tkn_start = 0;
+ int32_t tkn_end = 0;
+ int32_t tkn_len = 0;
- if (dest8_len)
- *dest8_len = 0;
- if (!buf || !(buf_cap > 0) || !src8_len)
+ if (!tokenizer || !tokenizer->bi
+ || !tokenizer->buf16 || !tokenizer->buf16->utf16_len)
return 0;
- // converting buf to utf16
- buf = (char *)icu_utf16_from_utf8n((UChar *) buf,
- (int32_t) buf_cap, &buf_len,
- src8, src8_len);
+ // never change tokenizer->buf16 and keep always invariant
+ // 0 <= tokenizer->token_start
+ // <= tokenizer->token_end
+ // <= tokenizer->buf16->utf16_len
+ // returns length of token
+
+ if (0 == tokenizer->token_end) // first call
+ tkn_start = ubrk_first(tokenizer->bi);
+ else //successive calls
+ tkn_start = tokenizer->token_end;
+
+ // get next position
+ tkn_end = ubrk_next(tokenizer->bi);
+
+ // repairing invariant at end of ubrk, which is UBRK_DONE = -1
+ if (UBRK_DONE == tkn_end)
+ tkn_end = tokenizer->buf16->utf16_len;
+
+ // copy out if everything is well
+ if(U_FAILURE(*status))
+ return 0;
+
+ // everything OK, now update internal state
+ tkn_len = tkn_end - tkn_start;
+
+ if (0 < tkn_len){
+ tokenizer->token_count++;
+ tokenizer->token_id++;
+ } else {
+ tokenizer->token_id = 0;
+ }
+ tokenizer->token_start = tkn_start;
+ tokenizer->token_end = tkn_end;
- // case mapping
- buf_len = (size_t) icu_utf16_casemap((UChar *)buf, (int32_t) buf_cap,
- (const UChar *)buf, (int32_t) buf_len,
- locale, action);
- // converting buf to utf8
- buf = icu_utf16_to_utf8(buf, buf_cap, (size_t *) &buf_len,
- (const UChar *) buf, (int32_t) buf_len);
+ // copying into token buffer if it exists
+ if (tkn16){
+ if (tkn16->utf16_cap < tkn_len)
+ icu_buf_utf16_resize(tkn16, (size_t) tkn_len * 2);
+
+ u_strncpy(tkn16->utf16, &(tokenizer->buf16->utf16)[tkn_start],
+ tkn_len);
+
+ tkn16->utf16_len = tkn_len;
+ }
+
+ return tkn_len;
+}
+
+
+int32_t icu_tokenizer_token_id(struct icu_tokenizer * tokenizer)
+{
+ return tokenizer->token_id;
+};
+
+int32_t icu_tokenizer_token_start(struct icu_tokenizer * tokenizer)
+{
+ return tokenizer->token_start;
+};
+int32_t icu_tokenizer_token_end(struct icu_tokenizer * tokenizer)
+{
+ return tokenizer->token_end;
+};
+
+int32_t icu_tokenizer_token_length(struct icu_tokenizer * tokenizer)
+{
+ return (tokenizer->token_end - tokenizer->token_start);
+};
+
+int32_t icu_tokenizer_token_count(struct icu_tokenizer * tokenizer)
+{
+ return tokenizer->token_count;
+};
+
+
+
+//struct icu_normalizer
+//{
+// char action;
+// struct icu_buf_utf16 * rules16;
+// UParseError parse_error[256];
+// UTransliterator * trans;
+//};
+
+
+struct icu_normalizer * icu_normalizer_create(const char *rules, char action,
+ UErrorCode *status)
+{
+
+ struct icu_normalizer * normalizer
+ = (struct icu_normalizer *) malloc(sizeof(struct icu_normalizer));
+
+ normalizer->action = action;
+ normalizer->trans = 0;
+ normalizer->rules16 = icu_buf_utf16_create(0);
+ icu_utf16_from_utf8_cstr(normalizer->rules16, rules, status);
+
+ switch(normalizer->action) {
+ case 'f':
+ normalizer->trans
+ = utrans_openU(normalizer->rules16->utf16,
+ normalizer->rules16->utf16_len,
+ UTRANS_FORWARD,
+ 0, 0,
+ normalizer->parse_error, status);
+ break;
+ case 'r':
+ normalizer->trans
+ = utrans_openU(normalizer->rules16->utf16,
+ normalizer->rules16->utf16_len,
+ UTRANS_REVERSE ,
+ 0, 0,
+ normalizer->parse_error, status);
+ break;
+ default:
+ *status = U_UNSUPPORTED_ERROR;
+ return 0;
+ break;
+ }
- // copying out to nmem
- buf[buf_len] = '\0';
+ if (U_SUCCESS(*status))
+ return normalizer;
+
+ // freeing if failed
+ icu_normalizer_destroy(normalizer);
+ return 0;
+};
+
+
+void icu_normalizer_destroy(struct icu_normalizer * normalizer){
+ if (normalizer) {
+ if (normalizer->rules16)
+ icu_buf_utf16_destroy(normalizer->rules16);
+ if (normalizer->trans)
+ utrans_close(normalizer->trans);
+ free(normalizer);
+ }
+};
- if(dest8_len)
- *dest8_len = buf_len;
- dest8 = nmem_strdup(nmem, buf);
- return dest8;
+
+int icu_normalizer_normalize(struct icu_normalizer * normalizer,
+ struct icu_buf_utf16 * dest16,
+ struct icu_buf_utf16 * src16,
+ UErrorCode *status)
+{
+ if (!normalizer || !normalizer->trans || !src16 || !dest16)
+ return 0;
+
+ if (!icu_buf_utf16_copy(dest16, src16))
+ return 0;
+
+ utrans_transUChars (normalizer->trans,
+ dest16->utf16, &(dest16->utf16_len),
+ dest16->utf16_cap,
+ 0, &(src16->utf16_len), status);
+
+ if (U_FAILURE(*status)){
+ dest16->utf16[0] = (UChar) 0;
+ dest16->utf16_len = 0;
+ }
+
+ return dest16->utf16_len;
}
+struct icu_chain_step * icu_chain_step_create(struct icu_chain * chain,
+ enum icu_chain_step_type type,
+ const uint8_t * rule,
+ struct icu_buf_utf16 * src16,
+ UErrorCode *status)
+{
+ struct icu_chain_step * step = 0;
+
+ if(!chain || !type || !rule)
+ return 0;
+
+ step = (struct icu_chain_step *) malloc(sizeof(struct icu_chain_step));
+
+ // create auxilary objects
+ switch(step->type) {
+ case ICU_chain_step_type_display:
+ break;
+ case ICU_chain_step_type_norm:
+ break;
+ case ICU_chain_step_type_sort:
+ break;
+ case ICU_chain_step_type_charmap:
+ break;
+ case ICU_chain_step_type_normalize:
+ step->u.normalizer = icu_normalizer_create((char *) rule, 'f', status);
+ break;
+ case ICU_chain_step_type_tokenize:
+ step->u.tokenizer = icu_tokenizer_create((char *) chain->locale,
+ (char) rule[0], status);
+ break;
+ default:
+ break;
+ }
+
+ if (src16)
+ step->src16 = src16;
+
+
+ return step;
+};
+
+
+void icu_chain_step_destroy(struct icu_chain_step * step){
+
+ if (!step)
+ return;
+
+ if (step->previous)
+ icu_chain_step_destroy(step->previous);
+
+ if (step->src16)
+ icu_buf_utf16_destroy(step->src16);
+
+ // destroy last living icu_chain_step
+
+ switch(step->type) {
+ case ICU_chain_step_type_display:
+ break;
+ case ICU_chain_step_type_norm:
+ break;
+ case ICU_chain_step_type_sort:
+ break;
+ case ICU_chain_step_type_charmap:
+ break;
+ case ICU_chain_step_type_normalize:
+ icu_normalizer_destroy(step->u.normalizer);
+ break;
+ case ICU_chain_step_type_tokenize:
+ icu_tokenizer_destroy(step->u.tokenizer);
+ break;
+ default:
+ break;
+ }
+
+
+};
+
+
+
+struct icu_chain * icu_chain_create(const uint8_t * identifier,
+ const uint8_t * locale)
+{
+
+ struct icu_chain * chain
+ = (struct icu_chain *) malloc(sizeof(struct icu_chain));
+
+ strncpy((char *) chain->identifier, (const char *) identifier, 128);
+ chain->identifier[128 - 1] = '\0';
+ strncpy((char *) chain->locale, (const char *) locale, 16);
+ chain->locale[16 - 1] = '\0';
+
+ chain->token_count = 0;
+
+ chain->display8 = icu_buf_utf8_create(0);
+ chain->norm8 = icu_buf_utf8_create(0);
+ chain->sort8 = icu_buf_utf8_create(0);
+
+ chain->src16 = icu_buf_utf16_create(0);
+
+ chain->steps = 0;
+
+ return chain;
+};
+
+
+void icu_chain_destroy(struct icu_chain * chain)
+{
+ icu_buf_utf8_destroy(chain->display8);
+ icu_buf_utf8_destroy(chain->norm8);
+ icu_buf_utf8_destroy(chain->sort8);
+
+ icu_buf_utf16_destroy(chain->src16);
+
+ icu_chain_step_destroy(chain->steps);
+};
+
+
+struct icu_chain_step * icu_chain_insert_step(struct icu_chain * chain,
+ enum icu_chain_step_type type,
+ const uint8_t * rule,
+ UErrorCode *status)
+{
+ struct icu_chain_step * step = 0;
+ struct icu_buf_utf16 * src16 = 0;
+
+ if (!chain || !type || !rule)
+ return 0;
+
+ //if(chain->steps && chain->steps->src16)
+
+ // assign utf16 src buffers as needed
+ switch(step->type) {
+ case ICU_chain_step_type_display:
+ break;
+ case ICU_chain_step_type_norm:
+ break;
+ case ICU_chain_step_type_sort:
+ break;
+ case ICU_chain_step_type_charmap:
+ break;
+ case ICU_chain_step_type_normalize:
+ break;
+ case ICU_chain_step_type_tokenize:
+ break;
+ default:
+ break;
+ }
+
+ // create actual chain step with this buffer
+ // leave zero for implicit buffer creation
+ step = icu_chain_step_create(chain, type, rule, src16, status);
+
+ step->previous = chain->steps;
+ chain->steps = step;
+
+ return step;
+};
+
+
#endif // HAVE_ICU