-/* $Id: icu_I18N.c,v 1.13 2007-05-15 15:11:42 marc Exp $
+/* $Id: icu_I18N.c,v 1.14 2007-05-16 12:39:49 marc Exp $
Copyright (c) 2006-2007, Index Data.
This file is part of Pazpar2.
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,
+ struct icu_buf_utf16 * buf16,
UErrorCode *status)
{
struct icu_chain_step * step = 0;
step = (struct icu_chain_step *) malloc(sizeof(struct icu_chain_step));
+ step->type = type;
+ step->more_tokens = 0;
+
+ if (buf16)
+ step->buf16 = buf16;
+ else
+ step->buf16 = 0;
+
// create auxilary objects
switch(step->type) {
case ICU_chain_step_type_display:
break;
}
- if (src16)
- step->src16 = src16;
-
-
return 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
+ icu_chain_step_destroy(step->previous);
switch(step->type) {
case ICU_chain_step_type_display:
case ICU_chain_step_type_sort:
break;
case ICU_chain_step_type_charmap:
+ icu_buf_utf16_destroy(step->buf16);
break;
case ICU_chain_step_type_normalize:
icu_normalizer_destroy(step->u.normalizer);
+ icu_buf_utf16_destroy(step->buf16);
break;
case ICU_chain_step_type_tokenize:
icu_tokenizer_destroy(step->u.tokenizer);
+ icu_buf_utf16_destroy(step->buf16);
break;
default:
break;
{
struct icu_chain_step * step = 0;
struct icu_buf_utf16 * src16 = 0;
+ struct icu_buf_utf16 * buf16 = 0;
if (!chain || !type || !rule)
return 0;
- //if(chain->steps && chain->steps->src16)
+ // assign utf16 src buffers as needed
+ if (chain->steps && chain->steps->buf16)
+ src16 = chain->steps->buf16;
+ else if (chain->src16)
+ src16 = chain->src16;
+ else
+ return 0;
+
- // assign utf16 src buffers as needed
- switch(step->type) {
+ // assign utf16 destination buffers as needed, or
+ // re-use previous uft18 buffer if this step does not touch it
+ switch(type) {
case ICU_chain_step_type_display:
+ buf16 = src16;
break;
case ICU_chain_step_type_norm:
+ buf16 = src16;
break;
case ICU_chain_step_type_sort:
+ buf16 = src16;
break;
case ICU_chain_step_type_charmap:
+ buf16 = icu_buf_utf16_create(0);
break;
case ICU_chain_step_type_normalize:
+ buf16 = icu_buf_utf16_create(0);
break;
case ICU_chain_step_type_tokenize:
+ buf16 = icu_buf_utf16_create(0);
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 = icu_chain_step_create(chain, type, rule, buf16, status);
step->previous = chain->steps;
chain->steps = step;
};
+int icu_chain_step_next_token(struct icu_chain * chain,
+ struct icu_chain_step * step,
+ UErrorCode *status)
+{
+ struct icu_buf_utf16 * src16 = 0;
+
+ printf("icu_chain_step_next_token %d\n", (int) step);
+
+ if (!chain || !chain->src16 || !step || !step->more_tokens)
+ return 0;
+
+ // assign utf16 src buffers as neeed, advance in previous steps
+ // tokens, and setting stop condition
+ if (step->previous){
+ src16 = step->previous->buf16;
+ step->more_tokens
+ = icu_chain_step_next_token(chain, step->previous, status);
+ }
+ else { // first step can only work once on chain->src16 input buffer
+ src16 = chain->src16;
+ step->more_tokens = 1;
+ }
+
+ // stop if nothing to process
+ // i.e new token source was not properly assigned
+ if (!step->more_tokens || !src16 || !src16->utf16_len) //
+ return 0;
+
+ printf("icu_chain_step_next_token %d working\n", (int) step);
+
+
+ // perform the work, eventually put this steps output in
+ // step->buf16 or the chains UTF8 output buffers
+ switch(step->type) {
+ case ICU_chain_step_type_display:
+ icu_utf16_to_utf8(chain->display8, src16, status);
+ break;
+ case ICU_chain_step_type_norm:
+ icu_utf16_to_utf8(chain->norm8, src16, status);
+ break;
+ case ICU_chain_step_type_sort:
+ icu_utf16_to_utf8(chain->sort8, src16, status);
+ break;
+ case ICU_chain_step_type_charmap:
+ break;
+ case ICU_chain_step_type_normalize:
+ icu_normalizer_normalize(step->u.normalizer,
+ step->buf16, src16, status);
+ break;
+ case ICU_chain_step_type_tokenize:
+ // step->more_tokens
+ // = icu_tokenizer_next_token(step->u.tokenizer,
+ // step->buf16, status);
+ break;
+ default:
+ return 0;
+ break;
+ }
+
+
+ // stop further token processing if last step
+ if (!step->previous)
+ step->more_tokens = 0;
+
+
+ if (U_FAILURE(*status))
+ return 0;
+
+ return 1;
+};
+
+
+
+int icu_chain_assign_cstr(struct icu_chain * chain,
+ const char * src8cstr,
+ UErrorCode *status)
+{
+ struct icu_chain_step * stp = chain->steps;
+
+ if (!chain || !src8cstr)
+ return 0;
+
+ // clear token count
+ chain->token_count = 0;
+
+ // clear all steps stop states
+
+ while (stp){
+ stp->more_tokens = 1;
+ stp = stp->previous;
+ }
+
+ // finally convert UTF8 to UTF16 string
+ icu_utf16_from_utf8_cstr(chain->src16, src8cstr, status);
+
+ if (U_FAILURE(*status))
+ return 0;
+
+ return 1;
+};
+
+
+
+int icu_chain_next_token(struct icu_chain * chain,
+ UErrorCode *status)
+{
+ int success = 0;
+
+ if (!chain || !chain->steps)
+ return 0;
+
+ success = icu_chain_step_next_token(chain, chain->steps, status);
+
+ if (success){
+ chain->token_count++;
+ return chain->token_count;
+ }
+
+ return 0;
+};
+
+int icu_chain_get_token_count(struct icu_chain * chain)
+{
+ if (!chain)
+ return 0;
+
+ return chain->token_count;
+};
+
+
+
+const char * icu_chain_get_display(struct icu_chain * chain)
+{
+ if (chain->display8)
+ return (const char *) chain->display8->utf8;
+
+ return 0;
+};
+
+const char * icu_chain_get_norm(struct icu_chain * chain)
+{
+ if (chain->norm8)
+ return (const char *) chain->norm8->utf8;
+
+ return 0;
+};
+
+const char * icu_chain_get_sort(struct icu_chain * chain)
+{
+ if (chain->sort8)
+ return (const char *) chain->sort8->utf8;
+
+ return 0;
+};
+
+
+
+
#endif // HAVE_ICU
projects / pazpar2-moved-to-github.git / blobdiff