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5c5091fcb7
Previously which path syntax we supported dependend on what platform we were compiling LLVM on. While this is normally desirable, there are situations where we need to be able to handle a path that we know was generated on a remote host. Remote debugging, for example, or parsing debug info. 99% of the code in LLVM for handling paths was platform agnostic and literally just a few branches were gated behind pre-processor checks, so this changes those sites to use runtime checks instead, and adds a flag to every path API that allows one to override the host native syntax. Differential Revision: https://reviews.llvm.org/D30858 llvm-svn: 298004
71 lines
1.9 KiB
C++
71 lines
1.9 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 "llvm/ADT/SmallString.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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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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