Gabriele Cosmo
79 lines
2.0 KiB
Plaintext
79 lines
2.0 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_strip
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#define tools_strip
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#include <vector>
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#include <string>
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namespace tools {
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enum what { leading, trailing, both };
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inline bool strip(std::string& a_string,what a_type = both,char a_char = ' '){
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//return true = some stripping had been done.
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std::string::size_type l = a_string.length();
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if(l==0) return false;
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switch ( a_type ) {
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case leading:{
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char* pos = (char*)a_string.c_str();
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for(std::string::size_type i=0;i<l;i++,pos++) {
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if(*pos!=a_char) {
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a_string = a_string.substr(i,l-i);
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return (i?true:false); //i=0 : same string.
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}
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}
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// all chars are a_char :
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a_string.clear();
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return true;
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}break;
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case trailing:{
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char* pos = (char*)a_string.c_str();
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pos += (l-1);
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std::string::size_type i = l-1;
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std::string::const_reverse_iterator it;
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for(it=a_string.rbegin();it!=a_string.rend();++it,i--,pos--) {
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if(*pos!=a_char) {
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a_string = a_string.substr(0,i+1);
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return (i==(l-1)?false:true); //i==l-1 : same string.
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}
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}
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// all chars are a_char :
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a_string.clear();
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return true;
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}break;
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case both:{
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bool stat_lead = strip(a_string,leading,a_char);
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bool stat_trail = strip(a_string,trailing,a_char);
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if(stat_lead) return true;
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if(stat_trail) return true;
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}break;
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//default:break;
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}
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return false; //nothing done.
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}
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#ifdef TOOLS_DEPRECATED
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inline std::string strp(const std::string& a_string,what a_type = both,char a_char = ' '){
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std::string _s(a_string);
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strip(_s,a_type,a_char);
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return _s;
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}
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#endif //TOOLS_DEPRECATED
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inline bool strip(std::vector<std::string>& a_strings,what a_type = both,char a_char = ' ') {
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bool some_done = false;
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std::vector<std::string>::iterator it;
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for(it=a_strings.begin();it!=a_strings.end();++it) {
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if(strip(*it,a_type,a_char)) some_done = true;
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}
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return some_done;
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}
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}
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#endif
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