OZ++ Class: WordExpression |
/****************************************************************************** * * Copyright (c) 2016 TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * WordExpression.h * *****************************************************************************/ #pragma once #include <oz++/CommonObject.h> #include <oz++/Pair.h> #include <oz++/KeyNamePairs.h> #include <oz++/Exception.h> #include <wordexp.h> namespace OZ { class WordExpression :public CommonObject { private: wordexp_t expression; public: WordExpression(const char* word, int cflags=0) { if (word == NULL) { throw IException("Invalid argument. word is NULL."); } memset(&expression, 0, sizeof(expression)); int rc = wordexp(word, &expression, cflags); if (rc != 0) { const char* error = getError(rc); throw IException("Failed to wordexp for %s: error:%s", word, error); } //show(); } ~WordExpression() { wordfree(&expression); } void show() { char** wordv = expression.we_wordv; size_t count = expression.we_wordc; if (wordv && count >0) { for (size_t i = 0; i<count; i++) { printf("%s\n", wordv[i]); } } } size_t getWordCount() { size_t count = expression.we_wordc; return count; } char** getWordVector() { char** wordv = expression.we_wordv; if (wordv == NULL) { throw IException("WordVector is NULL.") } return wordv; } private: static const char* getError(int error) { static Pair<int, const char*> errors[] = { {WRDE_BADCHAR, "WRDE_BADCHAR"}, {WRDE_BADVAL, "WRDE_BADVAL"}, {WRDE_CMDSUB, "WRDE_CMDSUB"}, {WRDE_NOSPACE, "WRDE_NOSPACE"}, {WRDE_SYNTAX, "WRDE_SYNTAX"}, }; KeyNamePairs<int> pairs(errors, SizeOf(errors)); return pairs.match(error); } }; }