103 lines
2.0 KiB
C++
103 lines
2.0 KiB
C++
|
#include "environment.h"
|
||
|
|
#include <cstdio>
|
||
|
|
#include <cstdarg>
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
|
||
|
|
std::string &lowercase(std::string &s) {
|
||
|
|
std::transform(s.begin(), s.end(), s.begin(), [](char c){ return std::tolower(c); });
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 0 or "" -> false. all others -> true */
|
||
|
|
bool tf(const std::string &s) {
|
||
|
|
if (s.empty()) return false;
|
||
|
|
if (s.size() == 1 && s == "0") return false;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
Environment::iterator Environment::find( const std::string & key ) {
|
||
|
|
std::string k(key);
|
||
|
|
lowercase(k);
|
||
|
|
return _table.find(k);
|
||
|
|
}
|
||
|
|
|
||
|
|
Environment::const_iterator Environment::find( const std::string & key ) const {
|
||
|
|
std::string k(key);
|
||
|
|
lowercase(k);
|
||
|
|
return _table.find(k);
|
||
|
|
}
|
||
|
|
|
||
|
|
void Environment::set(const std::string &key, const std::string &value, bool exported) {
|
||
|
|
std::string k(key);
|
||
|
|
lowercase(k);
|
||
|
|
|
||
|
|
if (k == "echo") _echo = tf(value);
|
||
|
|
if (k == "exit") _exit = tf(value);
|
||
|
|
if (k == "test") _test = tf(value);
|
||
|
|
|
||
|
|
// don't need to check {status} because that will be clobbered
|
||
|
|
// by the return value.
|
||
|
|
|
||
|
|
EnvironmentEntry v(value, exported);
|
||
|
|
|
||
|
|
auto iter = _table.find(k);
|
||
|
|
if (iter == _table.end()) {
|
||
|
|
_table.emplace(std::make_pair(k, std::move(v)));
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
// if previously exported, keep exported.
|
||
|
|
if (iter->second) v = true;
|
||
|
|
iter->second = std::move(v);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Environment::unset(const std::string &key) {
|
||
|
|
std::string k(key);
|
||
|
|
lowercase(k);
|
||
|
|
if (k == "echo") _echo = false;
|
||
|
|
if (k == "exit") _exit = false;
|
||
|
|
if (k == "test") _test = false;
|
||
|
|
_table.erase(k);
|
||
|
|
}
|
||
|
|
|
||
|
|
void Environment::unset() {
|
||
|
|
_table.clear();
|
||
|
|
_echo = false;
|
||
|
|
_exit = false;
|
||
|
|
_test = false;
|
||
|
|
_status = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int Environment::status(int i) {
|
||
|
|
|
||
|
|
if (_status == i) return i;
|
||
|
|
|
||
|
|
_status = i;
|
||
|
|
_table["status"] = std::to_string(i);
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
int Environment::status(int i) {
|
||
|
|
status(i, std::nothrow);
|
||
|
|
if (_exit) {
|
||
|
|
throw std::runtime_error("Execution of input terminated.");
|
||
|
|
}
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Environment::echo(const char *fmt, ...) {
|
||
|
|
if (_echo) {}
|
||
|
|
va_list ap;
|
||
|
|
va_start(ap, fmt);
|
||
|
|
va_end(ap);
|
||
|
|
vfprintf(stderr, fmt, ap);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
*/
|