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| //===-- Environment.cpp -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/Environment.h"
using namespace lldb_private;
char *Environment::Envp::make_entry(llvm::StringRef Key,
llvm::StringRef Value) {
const size_t size = Key.size() + 1 /*=*/ + Value.size() + 1 /*\0*/;
char *Result = reinterpret_cast<char *>(
Allocator.Allocate(sizeof(char) * size, alignof(char)));
char *Next = Result;
Next = std::copy(Key.begin(), Key.end(), Next);
*Next++ = '=';
Next = std::copy(Value.begin(), Value.end(), Next);
*Next++ = '\0';
return Result;
}
Environment::Envp::Envp(const Environment &Env) {
Data = reinterpret_cast<char **>(
Allocator.Allocate(sizeof(char *) * (Env.size() + 1), alignof(char *)));
char **Next = Data;
for (const auto &KV : Env)
*Next++ = make_entry(KV.first(), KV.second);
*Next++ = nullptr;
}
Environment::Environment(const char *const *Env) {
if (!Env)
return;
while (*Env)
insert(*Env++);
}
void Environment::insert(const_iterator first, const_iterator last) {
while (first != last) {
try_emplace(first->first(), first->second);
++first;
}
}
|