X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=src%2Ficu_chain.c;h=fb69d828c7019cb79dcbfc92a08e77eae84fffe2;hp=d72e9cdbe587d92005cc3c1b100aeb7eecd01664;hb=e1ad0cf93484f86cbdcd53c73219eef124332dfc;hpb=88d3bedf772316f87e1996f655ccf8d1e2589755 diff --git a/src/icu_chain.c b/src/icu_chain.c index d72e9cd..fb69d82 100644 --- a/src/icu_chain.c +++ b/src/icu_chain.c @@ -17,6 +17,8 @@ #include +#include + #include #include @@ -29,11 +31,12 @@ enum icu_chain_step_type { ICU_chain_step_type_none, - ICU_chain_step_type_display, /* convert to utf8 display format */ - ICU_chain_step_type_casemap, /* apply utf16 charmap */ - ICU_chain_step_type_transform, /* apply utf16 transform */ - ICU_chain_step_type_tokenize, /* apply utf16 tokenization */ - ICU_chain_step_type_transliterate /* apply utf16 tokenization */ + ICU_chain_step_type_display, /* convert to utf8 display format */ + ICU_chain_step_type_casemap, /* apply utf16 charmap */ + ICU_chain_step_type_transform, /* apply utf16 transform */ + ICU_chain_step_type_tokenize, /* apply utf16 tokenization */ + ICU_chain_step_type_transliterate, /* apply utf16 tokenization */ + YAZ_chain_step_type_stemming /* apply utf16 stemming (YAZ) */ }; struct icu_chain_step @@ -41,26 +44,24 @@ struct icu_chain_step /* type and action object */ enum icu_chain_step_type type; union { - struct icu_casemap * casemap; - struct icu_transform * transform; - struct icu_tokenizer * tokenizer; + struct icu_casemap * casemap; + struct icu_transform * transform; + struct icu_tokenizer * tokenizer; + yaz_stemmer_p stemmer; } u; struct icu_chain_step * previous; }; struct icu_chain { - struct icu_iter *iter; + yaz_icu_iter_t iter; char *locale; int sort; UCollator * coll; - /* utf8 output buffers */ - struct icu_buf_utf8 * norm8; - /* linked list of chain steps */ - struct icu_chain_step * steps; + struct icu_chain_step * csteps; }; int icu_check_status(UErrorCode status) @@ -80,10 +81,10 @@ static struct icu_chain_step *icu_chain_step_create( { struct icu_chain_step * step = 0; - if(!chain || !type || !rule) + if (!chain || !type || !rule) return 0; - step = (struct icu_chain_step *) xmalloc(sizeof(struct icu_chain_step)); + step = (struct icu_chain_step *) xmalloc(sizeof(*step)); step->type = type; /* create auxilary objects */ @@ -108,6 +109,9 @@ static struct icu_chain_step *icu_chain_step_create( step->u.transform = icu_transform_create("custom", 'f', (const char *) rule, status); break; + case YAZ_chain_step_type_stemming: + step->u.stemmer = yaz_stemmer_create((char *) chain->locale, (const char *) rule, status); + break; default: break; } @@ -136,17 +140,56 @@ static void icu_chain_step_destroy(struct icu_chain_step * step) case ICU_chain_step_type_tokenize: icu_tokenizer_destroy(step->u.tokenizer); break; + case YAZ_chain_step_type_stemming: + yaz_stemmer_destroy(step->u.stemmer); + break; default: break; } xfree(step); } +struct icu_chain_step *icu_chain_step_clone(struct icu_chain_step *old) +{ + struct icu_chain_step *step = 0; + struct icu_chain_step **sp = &step; + while (old) + { + *sp = (struct icu_chain_step *) xmalloc(sizeof(**sp)); + (*sp)->type = old->type; + + switch ((*sp)->type) + { + case ICU_chain_step_type_display: + break; + case ICU_chain_step_type_casemap: + (*sp)->u.casemap = icu_casemap_clone(old->u.casemap); + break; + case ICU_chain_step_type_transform: + case ICU_chain_step_type_transliterate: + (*sp)->u.transform = icu_transform_clone(old->u.transform); + break; + case ICU_chain_step_type_tokenize: + (*sp)->u.tokenizer = icu_tokenizer_clone(old->u.tokenizer); + break; + case YAZ_chain_step_type_stemming: + yaz_stemmer_clone(step->u.stemmer); + break; + case ICU_chain_step_type_none: + break; + } + old = old->previous; + sp = &(*sp)->previous; + } + *sp = 0; + return step; +} + struct icu_chain *icu_chain_create(const char *locale, int sort, UErrorCode * status) { struct icu_chain * chain - = (struct icu_chain *) xmalloc(sizeof(struct icu_chain)); + = (struct icu_chain *) xmalloc(sizeof(*chain)); *status = U_ZERO_ERROR; @@ -160,8 +203,7 @@ struct icu_chain *icu_chain_create(const char *locale, int sort, if (U_FAILURE(*status)) return 0; - chain->norm8 = icu_buf_utf8_create(0); - chain->steps = 0; + chain->csteps = 0; return chain; } @@ -173,10 +215,9 @@ void icu_chain_destroy(struct icu_chain * chain) if (chain->coll) ucol_close(chain->coll); - icu_buf_utf8_destroy(chain->norm8); if (chain->iter) icu_iter_destroy(chain->iter); - icu_chain_step_destroy(chain->steps); + icu_chain_step_destroy(chain->csteps); xfree(chain->locale); xfree(chain); } @@ -237,6 +278,9 @@ struct icu_chain * icu_chain_xml_config(const xmlNode *xml_node, else if (!strcmp((const char *) node->name, "display")) step = icu_chain_insert_step(chain, ICU_chain_step_type_display, (const uint8_t *) "", status); + else if (!strcmp((const char *) node->name, "stemming")) + step = yaz_chain_insert_step(chain, YAZ_chain_step_type_stemming, + (const uint8_t *) xml_rule, status); else if (!strcmp((const char *) node->name, "normalize")) { yaz_log(YLOG_WARN, "Element %s is deprecated. " @@ -266,6 +310,7 @@ struct icu_chain * icu_chain_xml_config(const xmlNode *xml_node, return chain; } + static struct icu_chain_step *icu_chain_insert_step( struct icu_chain * chain, enum icu_chain_step_type type, const uint8_t * rule, UErrorCode *status) @@ -278,8 +323,8 @@ static struct icu_chain_step *icu_chain_insert_step( step = icu_chain_step_create(chain, type, rule, status); - step->previous = chain->steps; - chain->steps = step; + step->previous = chain->csteps; + chain->csteps = step; return step; } @@ -290,8 +335,10 @@ struct icu_iter { UErrorCode status; struct icu_buf_utf8 *display; struct icu_buf_utf8 *sort8; + struct icu_buf_utf8 *result; struct icu_buf_utf16 *input; int token_count; + struct icu_chain_step *steps; }; void icu_utf16_print(struct icu_buf_utf16 *src16) @@ -314,7 +361,7 @@ void icu_utf16_print(struct icu_buf_utf16 *src16) icu_buf_utf8_destroy(dst8); } -struct icu_buf_utf16 *icu_iter_invoke(struct icu_iter *iter, +struct icu_buf_utf16 *icu_iter_invoke(yaz_icu_iter_t iter, struct icu_chain_step *step, struct icu_buf_utf16 *src) { @@ -367,6 +414,15 @@ struct icu_buf_utf16 *icu_iter_invoke(struct icu_iter *iter, if (dst) icu_utf16_to_utf8(iter->display, dst, &iter->status); break; + case YAZ_chain_step_type_stemming: + if (dst) + { + struct icu_buf_utf16 *src = dst; + dst = icu_buf_utf16_create(0); + yaz_stemmer_stem(step->u.stemmer, dst, src, &iter->status); + icu_buf_utf16_destroy(src); + } + break; default: assert(0); } @@ -374,50 +430,56 @@ struct icu_buf_utf16 *icu_iter_invoke(struct icu_iter *iter, } } -struct icu_iter *icu_iter_create(struct icu_chain *chain, - const char *src8cstr) +yaz_icu_iter_t icu_iter_create(struct icu_chain *chain) { - if (!src8cstr) - return 0; - else - { - struct icu_iter *iter = xmalloc(sizeof(*iter)); - iter->chain = chain; - iter->status = U_ZERO_ERROR; - iter->display = icu_buf_utf8_create(0); - iter->sort8 = icu_buf_utf8_create(0); - iter->token_count = 0; - iter->last = 0; /* no last returned string (yet) */ - - /* fill and assign input string.. It will be 0 after - first iteration */ - iter->input = icu_buf_utf16_create(0); - icu_utf16_from_utf8_cstr(iter->input, src8cstr, &iter->status); - return iter; + yaz_icu_iter_t iter = xmalloc(sizeof(*iter)); + iter->chain = chain; + iter->status = U_ZERO_ERROR; + iter->display = icu_buf_utf8_create(0); + iter->sort8 = icu_buf_utf8_create(0); + iter->result = icu_buf_utf8_create(0); + iter->last = 0; /* no last returned string (yet) */ + iter->steps = icu_chain_step_clone(chain->csteps); + iter->input = 0; + + return iter; +} - } +void icu_iter_first(yaz_icu_iter_t iter, const char *src8cstr) +{ + if (iter->input) + icu_buf_utf16_destroy(iter->input); + iter->input = icu_buf_utf16_create(0); + iter->token_count = 0; + /* fill and assign input string.. It will be 0 after + first iteration */ + icu_utf16_from_utf8_cstr(iter->input, src8cstr, &iter->status); } -void icu_iter_destroy(struct icu_iter *iter) +void icu_iter_destroy(yaz_icu_iter_t iter) { if (iter) { icu_buf_utf8_destroy(iter->display); icu_buf_utf8_destroy(iter->sort8); + icu_buf_utf8_destroy(iter->result); if (iter->input) icu_buf_utf16_destroy(iter->input); + icu_chain_step_destroy(iter->steps); xfree(iter); } } -int icu_iter_next(struct icu_iter *iter, struct icu_buf_utf8 *result) +int icu_iter_next(yaz_icu_iter_t iter) { if (!iter->input && iter->last == 0) return 0; else { /* on first call, iter->input is the input string. Thereafter: 0. */ - iter->last = icu_iter_invoke(iter, iter->chain->steps, iter->input); + iter->last = icu_iter_invoke(iter, iter->steps ? + iter->steps : iter->chain->csteps, + iter->input); iter->input = 0; if (!iter->last) @@ -431,36 +493,47 @@ int icu_iter_next(struct icu_iter *iter, struct icu_buf_utf8 *result) iter->sort8, iter->last, &iter->status); } - icu_utf16_to_utf8(result, iter->last, &iter->status); + icu_utf16_to_utf8(iter->result, iter->last, &iter->status); icu_buf_utf16_destroy(iter->last); return 1; } } -const char *icu_iter_get_sortkey(struct icu_iter *iter) +const char *icu_iter_get_norm(yaz_icu_iter_t iter) +{ + return icu_buf_utf8_to_cstr(iter->result); +} + +const char *icu_iter_get_sortkey(yaz_icu_iter_t iter) { return icu_buf_utf8_to_cstr(iter->sort8); } -const char *icu_iter_get_display(struct icu_iter *iter) +const char *icu_iter_get_display(yaz_icu_iter_t iter) { return icu_buf_utf8_to_cstr(iter->display); } +int icu_iter_get_token_number(yaz_icu_iter_t iter) +{ + return iter->token_count; +} + int icu_chain_assign_cstr(struct icu_chain * chain, const char * src8cstr, UErrorCode *status) { if (chain->iter) icu_iter_destroy(chain->iter); - chain->iter = icu_iter_create(chain, src8cstr); + chain->iter = icu_iter_create(chain); + icu_iter_first(chain->iter, src8cstr); return 1; } int icu_chain_next_token(struct icu_chain * chain, UErrorCode *status) { *status = U_ZERO_ERROR; - return icu_iter_next(chain->iter, chain->norm8); + return icu_iter_next(chain->iter); } int icu_chain_token_number(struct icu_chain * chain) @@ -479,8 +552,8 @@ const char * icu_chain_token_display(struct icu_chain * chain) const char * icu_chain_token_norm(struct icu_chain * chain) { - if (chain->norm8) - return icu_buf_utf8_to_cstr(chain->norm8); + if (chain->iter) + return icu_iter_get_norm(chain->iter); return 0; }