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4479ac15c9
This patch makes adjustments to header file includes in lldbUtility based on recommendations by the iwyu tool (include-what-you-use). The goal here is to make sure that all files include the exact set of headers which are needed for that file only, to eliminate cases of dead includes (e.g. someone deleted some code but forgot to delete the header includes that that code necessitated), and to eliminate the case where header includes are picked up transitively. llvm-svn: 299676
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
//===--------------------- TildeExpressionResolver.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/TildeExpressionResolver.h"
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#include <assert.h> // for assert
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#include <system_error> // for error_code
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#include "llvm/ADT/STLExtras.h" // for any_of
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#include "llvm/ADT/SmallVector.h" // for SmallVectorImpl
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#include "llvm/Config/llvm-config.h" // for LLVM_ON_WIN32
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h" // for fs
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#if !defined(LLVM_ON_WIN32)
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#include <pwd.h>
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#endif
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using namespace lldb_private;
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using namespace llvm;
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namespace fs = llvm::sys::fs;
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namespace path = llvm::sys::path;
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TildeExpressionResolver::~TildeExpressionResolver() {}
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bool StandardTildeExpressionResolver::ResolveExact(
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StringRef Expr, SmallVectorImpl<char> &Output) {
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// We expect the tilde expression to be ONLY the expression itself, and
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// contain no separators.
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assert(!llvm::any_of(Expr, [](char c) { return path::is_separator(c); }));
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assert(Expr.empty() || Expr[0] == '~');
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return !fs::real_path(Expr, Output, true);
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}
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bool StandardTildeExpressionResolver::ResolvePartial(StringRef Expr,
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StringSet<> &Output) {
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// We expect the tilde expression to be ONLY the expression itself, and
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// contain no separators.
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assert(!llvm::any_of(Expr, [](char c) { return path::is_separator(c); }));
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assert(Expr.empty() || Expr[0] == '~');
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Output.clear();
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#if defined(LLVM_ON_WIN32) || defined(__ANDROID__)
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return false;
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#else
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if (Expr.empty())
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return false;
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SmallString<32> Buffer("~");
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setpwent();
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struct passwd *user_entry;
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Expr = Expr.drop_front();
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while ((user_entry = getpwent()) != NULL) {
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StringRef ThisName(user_entry->pw_name);
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if (!ThisName.startswith(Expr))
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continue;
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Buffer.resize(1);
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Buffer.append(ThisName);
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Buffer.append(path::get_separator());
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Output.insert(Buffer);
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}
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return true;
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#endif
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}
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bool TildeExpressionResolver::ResolveFullPath(
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StringRef Expr, llvm::SmallVectorImpl<char> &Output) {
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Output.clear();
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if (!Expr.startswith("~")) {
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Output.append(Expr.begin(), Expr.end());
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return false;
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}
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namespace path = llvm::sys::path;
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StringRef Left =
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Expr.take_until([](char c) { return path::is_separator(c); });
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if (!ResolveExact(Left, Output))
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return false;
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Output.append(Expr.begin() + Left.size(), Expr.end());
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return true;
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}
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