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/*
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* listcap.c
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*
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* capture history (?@...) sample.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "oniguruma.h"
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static int
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node_callback(int group, int beg, int end, int level, int at, void* arg)
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{
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int i;
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if (at != ONIG_TRAVERSE_CALLBACK_AT_FIRST)
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return -1; /* error */
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/* indent */
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for (i = 0; i < level * 2; i++)
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fputc(' ', stderr);
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fprintf(stderr, "%d: (%d-%d)\n", group, beg, end);
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return 0;
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}
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extern int ex(unsigned char* str, unsigned char* pattern,
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OnigSyntaxType* syntax)
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{
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int r;
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unsigned char *start, *range, *end;
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regex_t* reg;
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OnigErrorInfo einfo;
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OnigRegion *region;
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r = onig_new(®, pattern, pattern + strlen((char* )pattern),
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ONIG_OPTION_DEFAULT, ONIG_ENCODING_ASCII, syntax, &einfo);
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if (r != ONIG_NORMAL) {
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char s[ONIG_MAX_ERROR_MESSAGE_LEN];
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onig_error_code_to_str((UChar* )s, r, &einfo);
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fprintf(stderr, "ERROR: %s\n", s);
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return -1;
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}
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fprintf(stderr, "number of captures: %d\n", onig_number_of_captures(reg));
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fprintf(stderr, "number of capture histories: %d\n",
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onig_number_of_capture_histories(reg));
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region = onig_region_new();
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end = str + strlen((char* )str);
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start = str;
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range = end;
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r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE);
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if (r >= 0) {
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int i;
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fprintf(stderr, "match at %d\n", r);
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for (i = 0; i < region->num_regs; i++) {
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fprintf(stderr, "%d: (%d-%d)\n", i, region->beg[i], region->end[i]);
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}
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fprintf(stderr, "\n");
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r = onig_capture_tree_traverse(region, ONIG_TRAVERSE_CALLBACK_AT_FIRST,
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node_callback, (void* )0);
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}
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else if (r == ONIG_MISMATCH) {
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fprintf(stderr, "search fail\n");
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}
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else { /* error */
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char s[ONIG_MAX_ERROR_MESSAGE_LEN];
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onig_error_code_to_str((UChar* )s, r);
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return -1;
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}
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onig_region_free(region, 1 /* 1:free self, 0:free contents only */);
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onig_free(reg);
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return 0;
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}
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extern int main(int argc, char* argv[])
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{
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int r;
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OnigSyntaxType syn;
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static UChar* str1 = (UChar* )"((())())";
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static UChar* pattern1
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= (UChar* )"\\g(?@ \\(\\g<s>\\)){0}(?@<s>(?:\\g )*|){0}";
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static UChar* str2 = (UChar* )"x00x00x00";
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static UChar* pattern2 = (UChar* )"(?@x(?@\\d+))+";
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static UChar* str3 = (UChar* )"0123";
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static UChar* pattern3 = (UChar* )"(?@.)(?@.)(?@.)(?@.)";
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OnigEncoding use_encs[] = { ONIG_ENCODING_ASCII };
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onig_initialize(use_encs, sizeof(use_encs)/sizeof(use_encs[0]));
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/* enable capture hostory */
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onig_copy_syntax(&syn, ONIG_SYNTAX_DEFAULT);
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onig_set_syntax_op2(&syn,
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onig_get_syntax_op2(&syn) | ONIG_SYN_OP2_ATMARK_CAPTURE_HISTORY);
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r = ex(str1, pattern1, &syn);
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r = ex(str2, pattern2, &syn);
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r = ex(str3, pattern3, &syn);
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onig_end();
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return r;
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}
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