Gabriele Cosmo
45 lines
927 B
Plaintext
45 lines
927 B
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_get_env
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#define tools_get_env
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#include <cstdlib>
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#include "sto"
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namespace tools {
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inline bool is_env(const std::string& a_string){
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const char* env = ::getenv(a_string.c_str());
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return (env?true:false);
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}
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inline bool get_env(const std::string& a_string,std::string& a_value){
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const char* env = ::getenv(a_string.c_str());
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if(env) {
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a_value = std::string(env?env:"");
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return true;
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} else {
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a_value.clear();
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return false;
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}
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}
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template <class T>
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inline bool get_env(const std::string& a_string,T& a_v,const T& a_def = T()){
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std::string s;
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if(!get_env(a_string,s)) {a_v = a_def;return false;}
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return to<T>(s,a_v,a_def);
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}
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inline bool get_env_bool(const std::string& a_string,bool& a_v){
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std::string s;
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if(!get_env(a_string,s)) return false;
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return to(s,a_v);
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}
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}
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#endif
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