BOOST 字符串查找示例
BOOST 字符串查找示例
#include <string>#include <iostream>#include <iterator>//#include <boost/algorithm/string/replace.hpp>//#include <boost/algorithm/string/erase.hpp>//#include <boost/algorithm/string/case_conv.hpp>#include <boost/algorithm/string.hpp>//Following two includes contain second-layer function.//They are already included by first-layer header//#include <boost/algorithm/string/replace2.hpp>//#include <boost/algorithm/string/find2.hpp>using namespace std;using namespace boost;// uppercase formatter/* Convert an input to upper case. Note, that this formatter can be used only on std::string inputs.*/inline string upcase_formatter( const iterator_range<string::const_iterator>& Replace ){ string Temp(Replace.begin(), Replace.end()); to_upper(Temp); return Temp;}int main(){ cout << "* Replace Example *" << endl << endl; string str1("abc___cde___efg"); // Erase 6-9th characters from the string cout << "str1 without 6th to 9th character:" << erase_range_copy( str1, make_iterator_range(str1.begin()+6, str1.begin()+9) ) << endl; // Replace 6-9th character with '+++' cout << "str1 with 6th to 9th character replaced with '+++': " << replace_range_copy( str1, make_iterator_range(str1.begin()+6, str1.begin()+9), "+++" ) << endl; cout << "str1 with 'cde' replaced with 'XYZ': "; // Replace first 'cde' with 'XYZ'. Modify the input replace_first_copy( ostream_iterator<char>(cout), str1, "cde", "XYZ" ); cout << endl; // Replace all '___' cout << "str1 with all '___' replaced with '---': " << replace_all_copy( str1, "___", "---" ) << endl; // Erase all '___' cout << "str1 without all '___': " << erase_all_copy( str1, "___" ) << endl; // replace third and 5th occurrence of _ in str1 // note that nth argument is 0-based replace_nth( str1, "_", 4, "+" ); replace_nth( str1, "_", 2, "+" ); cout << "str1 with third and 5th occurrence of _ replace: " << str1 << endl; // Custom formatter examples string str2("abC-xxxx-AbC-xxxx-abc"); // Find string 'abc' ignoring the case and convert it to upper case cout << "Upcase all 'abc'(s) in the str2: " << find_format_all_copy( str2, first_finder("abc", is_iequal()), upcase_formatter ); cout << endl; return 0;}