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//===--------------------- TildeExpressionResolver.cpp ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/TildeExpressionResolver.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#if !defined(LLVM_ON_WIN32)
#include <pwd.h>
#endif
using namespace lldb_private;
using namespace llvm;
namespace fs = llvm::sys::fs;
namespace path = llvm::sys::path;
TildeExpressionResolver::~TildeExpressionResolver() {}
bool StandardTildeExpressionResolver::ResolveExact(
StringRef Expr, SmallVectorImpl<char> &Output) {
// We expect the tilde expression to be ONLY the expression itself, and
// contain
// no separators.
assert(!llvm::any_of(Expr, path::is_separator));
assert(Expr.empty() || Expr[0] == '~');
return !fs::real_path(Expr, Output, true);
}
bool StandardTildeExpressionResolver::ResolvePartial(StringRef Expr,
StringSet<> &Output) {
// We expect the tilde expression to be ONLY the expression itself, and
// contain no separators.
assert(!llvm::any_of(Expr, path::is_separator));
assert(Expr.empty() || Expr[0] == '~');
Output.clear();
#if defined(LLVM_ON_WIN32)
return false;
#else
if (Expr.empty())
return false;
SmallString<32> Buffer("~");
setpwent();
struct passwd *user_entry;
Expr = Expr.drop_front();
while ((user_entry = getpwent()) != NULL) {
StringRef ThisName(user_entry->pw_name);
if (!ThisName.startswith(Expr))
continue;
Buffer.resize(1);
Buffer.append(ThisName);
Buffer.append(path::get_separator()) Output.insert(Buffer);
}
return true;
#endif
}
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