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Editing: coll.cpp
/************************************************************************* * * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html * ************************************************************************* ************************************************************************* * COPYRIGHT: * Copyright (C) 2002-2006 IBM, Inc. All Rights Reserved. * *************************************************************************/ /** * This program demos string collation */ const char gHelpString[] = "usage: coll [options*] -source source_string -target target_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, Secondary, Tertiary, Quaternary, Identical\n" "-source string Source string for comparison\n" "-target string Target string for comparison\n" "Example coll -rules \\u0026b\\u003ca -source a -target 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/ustring.h> /** * Command line option variables * These global variables are set according to the options specified * on the command line by the user. */ char const *opt_locale = "en_US"; char *opt_rules = nullptr; 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; int opt_level = 0; char const *opt_source = "abc"; char const *opt_target = "abd"; UCollator *collator = nullptr; /** * 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}, {"-target", OptSpec::STRING, &opt_target}, {"-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}, {"-help", OptSpec::FLAG, &opt_help}, {"-?", OptSpec::FLAG, &opt_help}, {nullptr, OptSpec::FLAG, nullptr} }; /** * 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 != nullptr; pOpt++) { if (strcmp(pOpt->name, pArgName) == 0) { switch (pOpt->type) { case OptSpec::FLAG: *static_cast<UBool*>(pOpt->pVar) = true; break; case OptSpec::STRING: argNum ++; if (argNum >= argc) { fprintf(stderr, "value expected for \"%s\" option.\n", pOpt->name); return false; } *static_cast<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; } *static_cast<int*>(pOpt->pVar) = i; } break; } } if (pOpt->name == nullptr) { fprintf(stderr, "Unrecognized option \"%s\"\n", pArgName); return false; } } return true; } /** * ICU string comparison */ int strcmp() { char16_t source[100]; char16_t target[100]; u_unescape(opt_source, source, 100); u_unescape(opt_target, target, 100); UCollationResult result = ucol_strcoll(collator, source, -1, target, -1); if (result == UCOL_LESS) { return -1; } else if (result == UCOL_GREATER) { return 1; } return 0; } /** * Creates a collator */ UBool processCollator() { // Set up an ICU collator UErrorCode status = U_ZERO_ERROR; char16_t rules[100]; if (opt_rules != nullptr) { u_unescape(opt_rules, rules, 100); collator = ucol_openRules(rules, -1, UCOL_OFF, UCOL_TERTIARY, nullptr, &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; } /** * 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 (!static_cast<bool>(processOptions(argc, argv, opts)) || static_cast<bool>(opt_help)) { printf(gHelpString); return -1; } if (!static_cast<bool>(processCollator())) { fprintf(stderr, "Error creating collator for comparison\n"); return -1; } fprintf(stdout, "Comparing source=%s and target=%s\n", opt_source, opt_target); int result = strcmp(); if (result == 0) { fprintf(stdout, "source is equals to target\n"); } else if (result < 0) { fprintf(stdout, "source is less than target\n"); } else { fprintf(stdout, "source is greater than target\n"); } ucol_close(collator); return 0; }
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