Blame sample/echo.c

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/*
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 * echo.c
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 */
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#include <stdlib.h>
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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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echo(OnigCalloutArgs* args, void* user_data)
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{
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  int r;
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  OnigCalloutIn in;
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  OnigType type;
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  OnigValue val;
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  FILE* fp;
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  fp = stdout;
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  in = onig_get_callout_in_by_callout_args(args);
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  r = onig_get_arg_by_callout_args(args, 1, &type, &val;;
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  if (r != ONIG_NORMAL) return r;
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  if (in == ONIG_CALLOUT_IN_PROGRESS) {
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    if (val.c == '<')
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      return ONIG_CALLOUT_SUCCESS;
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  }
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  else {
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    if (val.c != 'X' && val.c != '<')
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      return ONIG_CALLOUT_SUCCESS;
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  }
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  r = onig_get_arg_by_callout_args(args, 0, &type, &val;;
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  if (r != ONIG_NORMAL) return r;
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  fprintf(fp, "%s %s\n",
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          (in == ONIG_CALLOUT_IN_PROGRESS ? "=>" : "<="),
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          val.s.start);
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  fflush(fp);
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  return ONIG_CALLOUT_SUCCESS;
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}
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static int
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test(OnigEncoding enc, char* in_pattern, char* in_str)
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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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  UChar* pattern;
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  UChar* str;
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  pattern = (UChar* )in_pattern;
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  str = (UChar* )in_str;
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  r = onig_new(&reg, pattern, pattern + strlen((char* )pattern),
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               ONIG_OPTION_DEFAULT, enc, ONIG_SYNTAX_DEFAULT, &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, "COMPILE ERROR: %d: %s\n", r, s);
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    return -1;
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  }
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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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  }
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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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    fprintf(stderr, "SEARCH ERROR: %d: %s\n", r, s);
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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 r;
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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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  int id;
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  UChar* name;
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  OnigEncoding use_encs[1];
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  OnigType arg_types[4];
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  OnigValue opt_defaults[4];
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  OnigEncoding enc;
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  enc = ONIG_ENCODING_UTF8;
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  use_encs[0] = enc;
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  r = onig_initialize(use_encs, sizeof(use_encs)/sizeof(use_encs[0]));
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  if (r != ONIG_NORMAL) return -1;
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  name = (UChar* )"echo";
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  arg_types[0] = ONIG_TYPE_STRING;
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  arg_types[1] = ONIG_TYPE_CHAR;
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  opt_defaults[0].s.start = (UChar* )"echo";
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  opt_defaults[0].s.end   = opt_defaults[0].s.start +
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                                strlen((char* )opt_defaults[0].s.start);
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  opt_defaults[1].c = '>';
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  id = onig_set_callout_of_name(enc, ONIG_CALLOUT_TYPE_SINGLE,
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                                name, name + strlen((char* )name),
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                                ONIG_CALLOUT_IN_BOTH, echo, 0,
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                                2, arg_types, 2, opt_defaults);
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  if (id < 0) {
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    fprintf(stderr, "ERROR: fail to set callout of name: %s\n", name);
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    return -1;
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  }
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  test(enc, "(?:(*echo{abc!!!})a|b)*", "abba");
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  test(enc, "(?:(*echo{xyz,X})a|b)*", "abba");
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  onig_end();
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  return 0;
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}