forked from OSchip/llvm-project
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
//===-- Environment.cpp -----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Utility/Environment.h"
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using namespace lldb_private;
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char *Environment::Envp::make_entry(llvm::StringRef Key,
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llvm::StringRef Value) {
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const size_t size = Key.size() + 1 /*=*/ + Value.size() + 1 /*\0*/;
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char *Result = reinterpret_cast<char *>(
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Allocator.Allocate(sizeof(char) * size, alignof(char)));
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char *Next = Result;
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Next = std::copy(Key.begin(), Key.end(), Next);
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*Next++ = '=';
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Next = std::copy(Value.begin(), Value.end(), Next);
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*Next++ = '\0';
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return Result;
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}
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Environment::Envp::Envp(const Environment &Env) {
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Data = reinterpret_cast<char **>(
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Allocator.Allocate(sizeof(char *) * (Env.size() + 1), alignof(char *)));
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char **Next = Data;
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for (const auto &KV : Env)
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*Next++ = make_entry(KV.first(), KV.second);
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*Next++ = nullptr;
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}
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Environment::Environment(const char *const *Env) {
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if (!Env)
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return;
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while (*Env)
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insert(*Env++);
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}
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void Environment::insert(const_iterator first, const_iterator last) {
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while (first != last) {
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try_emplace(first->first(), first->second);
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++first;
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}
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}
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