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Editing: strsrch.cpp
/************************************************************************* * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html#License * ************************************************************************* ************************************************************************* * COPYRIGHT: * Copyright (C) 2002-2006 IBM, Inc. All Rights Reserved. * *************************************************************************/ /** * This program demos string collation */ const char gHelpString[] = "usage: strsrch [options*] -source source_string -pattern pattern_string\n" "-help Display this message.\n" "-locale name ICU locale to use. Default is en_US\n" "-rules rule Collation rules file (overrides locale)\n" "-french French accent ordering\n" "-norm Normalizing mode on\n" "-shifted Shifted mode\n" "-lower Lower case first\n" "-upper Upper case first\n" "-case Enable separate case level\n" "-level n Sort level, 1 to 5, for Primary, Secndary, Tertiary, Quaternary, Identical\n" "-source string Source string\n" "-pattern string Pattern string to look for in source\n" "-overlap Enable searching to be done on overlapping patterns\n" "-canonical Enable searching to be done matching canonical equivalent patterns" "Example strsrch -rules \\u0026b\\u003ca -source a\\u0020b\\u0020bc -pattern b\n" "The format \\uXXXX is supported for the rules and comparison strings\n" ; #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unicode/utypes.h> #include <unicode/ucol.h> #include <unicode/usearch.h> #include <unicode/ustring.h> /** * Command line option variables * These global variables are set according to the options specified * on the command line by the user. */ char * opt_locale = "en_US"; char * opt_rules = 0; UBool opt_help = FALSE; UBool opt_norm = FALSE; UBool opt_french = FALSE; UBool opt_shifted = FALSE; UBool opt_lower = FALSE; UBool opt_upper = FALSE; UBool opt_case = FALSE; UBool opt_overlap = FALSE; UBool opt_canonical = FALSE; int opt_level = 0; char * opt_source = "International Components for Unicode"; char * opt_pattern = "Unicode"; UCollator * collator = 0; UStringSearch * search = 0; UChar rules[100]; UChar source[100]; UChar pattern[100]; /** * Definitions for the command line options */ struct OptSpec { const char *name; enum {FLAG, NUM, STRING} type; void *pVar; }; OptSpec opts[] = { {"-locale", OptSpec::STRING, &opt_locale}, {"-rules", OptSpec::STRING, &opt_rules}, {"-source", OptSpec::STRING, &opt_source}, {"-pattern", OptSpec::STRING, &opt_pattern}, {"-norm", OptSpec::FLAG, &opt_norm}, {"-french", OptSpec::FLAG, &opt_french}, {"-shifted", OptSpec::FLAG, &opt_shifted}, {"-lower", OptSpec::FLAG, &opt_lower}, {"-upper", OptSpec::FLAG, &opt_upper}, {"-case", OptSpec::FLAG, &opt_case}, {"-level", OptSpec::NUM, &opt_level}, {"-overlap", OptSpec::FLAG, &opt_overlap}, {"-canonical", OptSpec::FLAG, &opt_canonical}, {"-help", OptSpec::FLAG, &opt_help}, {"-?", OptSpec::FLAG, &opt_help}, {0, OptSpec::FLAG, 0} }; /** * processOptions() Function to read the command line options. */ UBool processOptions(int argc, const char **argv, OptSpec opts[]) { for (int argNum = 1; argNum < argc; argNum ++) { const char *pArgName = argv[argNum]; OptSpec *pOpt; for (pOpt = opts; pOpt->name != 0; pOpt ++) { if (strcmp(pOpt->name, pArgName) == 0) { switch (pOpt->type) { case OptSpec::FLAG: *(UBool *)(pOpt->pVar) = TRUE; break; case OptSpec::STRING: argNum ++; if (argNum >= argc) { fprintf(stderr, "value expected for \"%s\" option.\n", pOpt->name); return FALSE; } *(const char **)(pOpt->pVar) = argv[argNum]; break; case OptSpec::NUM: argNum ++; if (argNum >= argc) { fprintf(stderr, "value expected for \"%s\" option.\n", pOpt->name); return FALSE; } char *endp; int i = strtol(argv[argNum], &endp, 0); if (endp == argv[argNum]) { fprintf(stderr, "integer value expected for \"%s\" option.\n", pOpt->name); return FALSE; } *(int *)(pOpt->pVar) = i; } break; } } if (pOpt->name == 0) { fprintf(stderr, "Unrecognized option \"%s\"\n", pArgName); return FALSE; } } return TRUE; } /** * Creates a collator */ UBool processCollator() { // Set up an ICU collator UErrorCode status = U_ZERO_ERROR; if (opt_rules != 0) { u_unescape(opt_rules, rules, 100); collator = ucol_openRules(rules, -1, UCOL_OFF, UCOL_TERTIARY, NULL, &status); } else { collator = ucol_open(opt_locale, &status); } if (U_FAILURE(status)) { fprintf(stderr, "Collator creation failed.: %d\n", status); return FALSE; } if (status == U_USING_DEFAULT_WARNING) { fprintf(stderr, "Warning, U_USING_DEFAULT_WARNING for %s\n", opt_locale); } if (status == U_USING_FALLBACK_WARNING) { fprintf(stderr, "Warning, U_USING_FALLBACK_ERROR for %s\n", opt_locale); } if (opt_norm) { ucol_setAttribute(collator, UCOL_NORMALIZATION_MODE, UCOL_ON, &status); } if (opt_french) { ucol_setAttribute(collator, UCOL_FRENCH_COLLATION, UCOL_ON, &status); } if (opt_lower) { ucol_setAttribute(collator, UCOL_CASE_FIRST, UCOL_LOWER_FIRST, &status); } if (opt_upper) { ucol_setAttribute(collator, UCOL_CASE_FIRST, UCOL_UPPER_FIRST, &status); } if (opt_case) { ucol_setAttribute(collator, UCOL_CASE_LEVEL, UCOL_ON, &status); } if (opt_shifted) { ucol_setAttribute(collator, UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, &status); } if (opt_level != 0) { switch (opt_level) { case 1: ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_PRIMARY, &status); break; case 2: ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_SECONDARY, &status); break; case 3: ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_TERTIARY, &status); break; case 4: ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_QUATERNARY, &status); break; case 5: ucol_setAttribute(collator, UCOL_STRENGTH, UCOL_IDENTICAL, &status); break; default: fprintf(stderr, "-level param must be between 1 and 5\n"); return FALSE; } } if (U_FAILURE(status)) { fprintf(stderr, "Collator attribute setting failed.: %d\n", status); return FALSE; } return TRUE; } /** * Creates a string search */ UBool processStringSearch() { u_unescape(opt_source, source, 100); u_unescape(opt_pattern, pattern, 100); UErrorCode status = U_ZERO_ERROR; search = usearch_openFromCollator(pattern, -1, source, -1, collator, NULL, &status); if (U_FAILURE(status)) { return FALSE; } if (opt_overlap == TRUE) { usearch_setAttribute(search, USEARCH_OVERLAP, USEARCH_ON, &status); } if (opt_canonical == TRUE) { usearch_setAttribute(search, USEARCH_CANONICAL_MATCH, USEARCH_ON, &status); } if (U_FAILURE(status)) { fprintf(stderr, "Error setting search attributes\n"); return FALSE; } return TRUE; } UBool findPattern() { UErrorCode status = U_ZERO_ERROR; int32_t offset = usearch_next(search, &status); if (offset == USEARCH_DONE) { fprintf(stdout, "Pattern not found in source\n"); } while (offset != USEARCH_DONE) { fprintf(stdout, "Pattern found at offset %d size %d\n", offset, usearch_getMatchedLength(search)); offset = usearch_next(search, &status); } if (U_FAILURE(status)) { fprintf(stderr, "Error in searching for pattern %d\n", status); return FALSE; } fprintf(stdout, "End of search\n"); return TRUE; } /** * Main -- process command line, read in and pre-process the test file, * call other functions to do the actual tests. */ int main(int argc, const char** argv) { if (processOptions(argc, argv, opts) != TRUE || opt_help) { printf(gHelpString); return -1; } if (processCollator() != TRUE) { fprintf(stderr, "Error creating collator\n"); return -1; } if (processStringSearch() != TRUE) { fprintf(stderr, "Error creating string search\n"); return -1; } fprintf(stdout, "Finding pattern %s in source %s\n", opt_pattern, opt_source); findPattern(); ucol_close(collator); usearch_close(search); return 0; }
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