Gabriele Cosmo
94 lines
2.7 KiB
Plaintext
94 lines
2.7 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
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// See the file tools.license for terms.
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#ifndef tools_words
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#define tools_words
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#include <string>
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#include <vector>
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namespace tools {
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inline void words(const std::string& a_string,const std::string& a_sep,bool a_take_empty,std::vector<std::string>& a_words){
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// If a_sep is for exa "|" and for "xxx||xxx" :
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// - a_take_empty false : {"xxx","xxx"} will be created
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// (and NOT {"xxx","","xxx"}).
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// - a_take_empty true : {"xxx","","xxx"} will be created.
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a_words.clear();
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if(a_string.empty()) return;
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std::string::size_type lim = (a_take_empty?0:1);
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if(a_sep.empty()) {
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a_words.push_back(a_string);
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} else {
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std::string::size_type l = a_string.length();
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std::string::size_type llimiter = a_sep.length();
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std::string::size_type pos = 0;
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while(true) {
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std::string::size_type index = a_string.find(a_sep,pos);
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if(index==std::string::npos){ // Last word.
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if((l-pos)>=lim) a_words.push_back(a_string.substr(pos,l-pos));
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break;
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} else {
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// abcxxxef
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// 0 3 67
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if((index-pos)>=lim) a_words.push_back(a_string.substr(pos,index-pos));
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pos = index + llimiter;
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}
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}
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}
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}
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inline std::vector<std::string> words(const std::string& a_string,const std::string& a_limiter,bool a_take_empty = false){
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std::vector<std::string> v;
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words(a_string,a_limiter,a_take_empty,v);
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return v;
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}
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inline void words(const std::string& a_string,
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const std::string& a_sep,bool a_take_empty,
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//output :
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unsigned int& a_wn,
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std::string::size_type* a_wps,
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std::string::size_type* a_wls){
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//used to optimize inlib::match().
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a_wn = 0;
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if(a_string.empty()) return;
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std::string::size_type lim = (a_take_empty?0:1);
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if(a_sep.empty()) {
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//a_words.push_back(a_string);
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a_wps[a_wn] = 0;
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a_wls[a_wn] = a_string.length();
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a_wn++;
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} else {
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std::string::size_type l = a_string.length();
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std::string::size_type llimiter = a_sep.length();
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std::string::size_type pos = 0;
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while(true) {
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std::string::size_type index = a_string.find(a_sep,pos);
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if(index==std::string::npos){ // Last word.
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if((l-pos)>=lim) {
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//a_words.push_back(a_string.substr(pos,l-pos));
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a_wps[a_wn] = pos;
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a_wls[a_wn] = l-pos;
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a_wn++;
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}
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break;
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} else {
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// abcxxxef
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// 0 3 67
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if((index-pos)>=lim) {
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//a_words.push_back(a_string.substr(pos,index-pos));
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a_wps[a_wn] = pos;
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a_wls[a_wn] = index-pos;
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a_wn++;
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}
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pos = index + llimiter;
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}
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}
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}
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}
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}
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#endif
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