301 lines
9.1 KiB
C++
301 lines
9.1 KiB
C++
/********************************************************************
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* COPYRIGHT:
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* Copyright (C) 2002-2003 IBM, Inc. All Rights Reserved.
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*
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********************************************************************/
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/**
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* This program demos string collation
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*/
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const char gHelpString[] =
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"usage: strsrch [options*] -source source_string -pattern pattern_string\n"
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"-help Display this message.\n"
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"-locale name ICU locale to use. Default is en_US\n"
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"-rules rule Collation rules file (overrides locale)\n"
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"-french French accent ordering\n"
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"-norm Normalizing mode on\n"
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"-shifted Shifted mode\n"
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"-lower Lower case first\n"
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"-upper Upper case first\n"
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"-case Enable separate case level\n"
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"-level n Sort level, 1 to 5, for Primary, Secndary, Tertiary, Quaternary, Identical\n"
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"-source string Source string\n"
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"-pattern string Pattern string to look for in source\n"
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"-overlap Enable searching to be done on overlapping patterns\n"
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"-canonical Enable searching to be done matching canonical equivalent patterns"
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"Example strsrch -rules \\u0026b\\u003ca -source a\\u0020b\\u0020bc -pattern b\n"
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"The format \\uXXXX is supported for the rules and comparison strings\n"
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;
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unicode/utypes.h>
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#include <unicode/ucol.h>
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#include <unicode/usearch.h>
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#include <unicode/ustring.h>
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/**
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* Command line option variables
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* These global variables are set according to the options specified
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* on the command line by the user.
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*/
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char * opt_locale = "en_US";
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char * opt_rules = 0;
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UBool opt_help = FALSE;
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UBool opt_norm = FALSE;
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UBool opt_french = FALSE;
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UBool opt_shifted = FALSE;
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UBool opt_lower = FALSE;
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UBool opt_upper = FALSE;
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UBool opt_case = FALSE;
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UBool opt_overlap = FALSE;
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UBool opt_canonical = FALSE;
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int opt_level = 0;
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char * opt_source = "International Components for Unicode";
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char * opt_pattern = "Unicode";
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UCollator * collator = 0;
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UStringSearch * search = 0;
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UChar rules[100];
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UChar source[100];
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UChar pattern[100];
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/**
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* Definitions for the command line options
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*/
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struct OptSpec {
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const char *name;
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enum {FLAG, NUM, STRING} type;
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void *pVar;
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};
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OptSpec opts[] = {
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{"-locale", OptSpec::STRING, &opt_locale},
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{"-rules", OptSpec::STRING, &opt_rules},
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{"-source", OptSpec::STRING, &opt_source},
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{"-pattern", OptSpec::STRING, &opt_pattern},
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{"-norm", OptSpec::FLAG, &opt_norm},
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{"-french", OptSpec::FLAG, &opt_french},
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{"-shifted", OptSpec::FLAG, &opt_shifted},
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{"-lower", OptSpec::FLAG, &opt_lower},
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{"-upper", OptSpec::FLAG, &opt_upper},
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{"-case", OptSpec::FLAG, &opt_case},
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{"-level", OptSpec::NUM, &opt_level},
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{"-overlap", OptSpec::FLAG, &opt_overlap},
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{"-canonical", OptSpec::FLAG, &opt_canonical},
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{"-help", OptSpec::FLAG, &opt_help},
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{"-?", OptSpec::FLAG, &opt_help},
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{0, OptSpec::FLAG, 0}
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};
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/**
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* processOptions() Function to read the command line options.
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*/
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UBool processOptions(int argc, const char **argv, OptSpec opts[])
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{
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for (int argNum = 1; argNum < argc; argNum ++) {
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const char *pArgName = argv[argNum];
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for (OptSpec *pOpt = opts; pOpt->name != 0; pOpt ++) {
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if (strcmp(pOpt->name, pArgName) == 0) {
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switch (pOpt->type) {
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case OptSpec::FLAG:
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*(UBool *)(pOpt->pVar) = TRUE;
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break;
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case OptSpec::STRING:
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argNum ++;
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if (argNum >= argc) {
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fprintf(stderr, "value expected for \"%s\" option.\n",
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pOpt->name);
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return FALSE;
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}
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*(const char **)(pOpt->pVar) = argv[argNum];
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break;
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case OptSpec::NUM:
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argNum ++;
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if (argNum >= argc) {
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fprintf(stderr, "value expected for \"%s\" option.\n",
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pOpt->name);
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return FALSE;
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}
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char *endp;
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int i = strtol(argv[argNum], &endp, 0);
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if (endp == argv[argNum]) {
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fprintf(stderr,
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"integer value expected for \"%s\" option.\n",
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pOpt->name);
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return FALSE;
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}
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*(int *)(pOpt->pVar) = i;
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}
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break;
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}
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}
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if (pOpt->name == 0)
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{
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fprintf(stderr, "Unrecognized option \"%s\"\n", pArgName);
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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* Creates a collator
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*/
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UBool processCollator()
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{
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// Set up an ICU collator
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UErrorCode status = U_ZERO_ERROR;
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if (opt_rules != 0) {
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u_unescape(opt_rules, rules, 100);
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collator = ucol_openRules(rules, -1, UCOL_OFF, UCOL_TERTIARY,
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NULL, &status);
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}
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else {
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collator = ucol_open(opt_locale, &status);
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}
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if (U_FAILURE(status)) {
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fprintf(stderr, "Collator creation failed.: %d\n", status);
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return FALSE;
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}
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if (status == U_USING_DEFAULT_WARNING) {
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fprintf(stderr, "Warning, U_USING_DEFAULT_WARNING for %s\n",
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opt_locale);
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}
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if (status == U_USING_FALLBACK_WARNING) {
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fprintf(stderr, "Warning, U_USING_FALLBACK_ERROR for %s\n",
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opt_locale);
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}
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if (opt_norm) {
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ucol_setAttribute(collator, UCOL_NORMALIZATION_MODE, UCOL_ON, &status);
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}
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if (opt_french) {
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ucol_setAttribute(collator, UCOL_FRENCH_COLLATION, UCOL_ON, &status);
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}
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if (opt_lower) {
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ucol_setAttribute(collator, UCOL_CASE_FIRST, UCOL_LOWER_FIRST,
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&status);
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}
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if (opt_upper) {
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ucol_setAttribute(collator, UCOL_CASE_FIRST, UCOL_UPPER_FIRST,
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&status);
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}
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if (opt_case) {
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ucol_setAttribute(collator, UCOL_CASE_LEVEL, UCOL_ON, &status);
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}
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if (opt_shifted) {
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ucol_setAttribute(collator, UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED,
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&status);
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}
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if (opt_level != 0) {
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switch (opt_level) {
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case 1:
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ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_PRIMARY, &status);
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break;
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case 2:
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ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_SECONDARY,
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&status);
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break;
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case 3:
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ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_TERTIARY, &status);
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break;
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case 4:
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ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_QUATERNARY,
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&status);
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break;
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case 5:
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ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_IDENTICAL,
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&status);
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break;
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default:
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fprintf(stderr, "-level param must be between 1 and 5\n");
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return FALSE;
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}
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}
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if (U_FAILURE(status)) {
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fprintf(stderr, "Collator attribute setting failed.: %d\n", status);
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return FALSE;
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}
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return TRUE;
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}
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/**
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* Creates a string search
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*/
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UBool processStringSearch()
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{
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u_unescape(opt_source, source, 100);
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u_unescape(opt_pattern, pattern, 100);
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UErrorCode status = U_ZERO_ERROR;
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search = usearch_openFromCollator(pattern, -1, source, -1, collator, NULL,
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&status);
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if (U_FAILURE(status)) {
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return FALSE;
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}
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if (opt_overlap == TRUE) {
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usearch_setAttribute(search, USEARCH_OVERLAP, USEARCH_ON, &status);
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}
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if (opt_canonical == TRUE) {
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usearch_setAttribute(search, USEARCH_CANONICAL_MATCH, USEARCH_ON,
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&status);
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}
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if (U_FAILURE(status)) {
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fprintf(stderr, "Error setting search attributes\n");
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return FALSE;
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}
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return TRUE;
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}
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UBool findPattern()
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{
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UErrorCode status = U_ZERO_ERROR;
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int32_t offset = usearch_next(search, &status);
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if (offset == USEARCH_DONE) {
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fprintf(stdout, "Pattern not found in source\n");
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}
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while (offset != USEARCH_DONE) {
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fprintf(stdout, "Pattern found at offset %d size %d\n", offset,
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usearch_getMatchedLength(search));
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offset = usearch_next(search, &status);
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}
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if (U_FAILURE(status)) {
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fprintf(stderr, "Error in searching for pattern %d\n", status);
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return FALSE;
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}
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fprintf(stdout, "End of search\n");
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return TRUE;
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}
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/**
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* Main -- process command line, read in and pre-process the test file,
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* call other functions to do the actual tests.
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*/
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int main(int argc, const char** argv)
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{
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if (processOptions(argc, argv, opts) != TRUE || opt_help) {
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printf(gHelpString);
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return -1;
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}
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if (processCollator() != TRUE) {
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fprintf(stderr, "Error creating collator\n");
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return -1;
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}
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if (processStringSearch() != TRUE) {
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fprintf(stderr, "Error creating string search\n");
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return -1;
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}
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fprintf(stdout, "Finding pattern %s in source %s\n", opt_pattern,
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opt_source);
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findPattern();
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ucol_close(collator);
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usearch_close(search);
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return 0;
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}
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