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//===-- FileSpecList.cpp --------------------------------------------------===//
//
// 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/FileSpecList.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Stream.h"
#include <cstdint>
#include <utility>
using namespace lldb_private;
FileSpecList::FileSpecList() : m_files() {}
FileSpecList::~FileSpecList() = default;
// Append the "file_spec" to the end of the file spec list.
void FileSpecList::Append(const FileSpec &file_spec) {
m_files.push_back(file_spec);
}
// Only append the "file_spec" if this list doesn't already contain it.
//
// Returns true if "file_spec" was added, false if this list already contained
// a copy of "file_spec".
bool FileSpecList::AppendIfUnique(const FileSpec &file_spec) {
collection::iterator end = m_files.end();
if (find(m_files.begin(), end, file_spec) == end) {
m_files.push_back(file_spec);
return true;
}
return false;
}
// Clears the file list.
void FileSpecList::Clear() { m_files.clear(); }
// Dumps the file list to the supplied stream pointer "s".
void FileSpecList::Dump(Stream *s, const char *separator_cstr) const {
collection::const_iterator pos, end = m_files.end();
for (pos = m_files.begin(); pos != end; ++pos) {
pos->Dump(s->AsRawOstream());
if (separator_cstr && ((pos + 1) != end))
s->PutCString(separator_cstr);
}
}
// Find the index of the file in the file spec list that matches "file_spec"
// starting "start_idx" entries into the file spec list.
//
// Returns the valid index of the file that matches "file_spec" if it is found,
// else std::numeric_limits<uint32_t>::max() is returned.
size_t FileSpecList::FindFileIndex(size_t start_idx, const FileSpec &file_spec,
bool full) const {
const size_t num_files = m_files.size();
// When looking for files, we will compare only the filename if the FILE_SPEC
// argument is empty
bool compare_filename_only = file_spec.GetDirectory().IsEmpty();
for (size_t idx = start_idx; idx < num_files; ++idx) {
if (compare_filename_only) {
if (ConstString::Equals(
m_files[idx].GetFilename(), file_spec.GetFilename(),
file_spec.IsCaseSensitive() || m_files[idx].IsCaseSensitive()))
return idx;
} else {
if (FileSpec::Equal(m_files[idx], file_spec, full))
return idx;
}
}
// We didn't find the file, return an invalid index
return UINT32_MAX;
}
size_t FileSpecList::FindCompatibleIndex(size_t start_idx,
const FileSpec &file_spec) const {
const size_t num_files = m_files.size();
if (start_idx >= num_files)
return UINT32_MAX;
const bool file_spec_relative = file_spec.IsRelative();
const bool file_spec_case_sensitive = file_spec.IsCaseSensitive();
// When looking for files, we will compare only the filename if the directory
// argument is empty in file_spec
const bool full = !file_spec.GetDirectory().IsEmpty();
for (size_t idx = start_idx; idx < num_files; ++idx) {
const FileSpec &curr_file = m_files[idx];
// Always start by matching the filename first
if (!curr_file.FileEquals(file_spec))
continue;
// Only compare the full name if the we were asked to and if the current
// file entry has the a directory. If it doesn't have a directory then we
// only compare the filename.
if (FileSpec::Equal(curr_file, file_spec, full)) {
return idx;
} else if (curr_file.IsRelative() || file_spec_relative) {
llvm::StringRef curr_file_dir = curr_file.GetDirectory().GetStringRef();
if (curr_file_dir.empty())
return idx; // Basename match only for this file in the list
// Check if we have a relative path in our file list, or if "file_spec" is
// relative, if so, check if either ends with the other.
llvm::StringRef file_spec_dir = file_spec.GetDirectory().GetStringRef();
// We have a relative path in our file list, it matches if the
// specified path ends with this path, but we must ensure the full
// component matches (we don't want "foo/bar.cpp" to match "oo/bar.cpp").
auto is_suffix = [](llvm::StringRef a, llvm::StringRef b,
bool case_sensitive) -> bool {
if (case_sensitive ? a.consume_back(b) : a.consume_back_insensitive(b))
return a.empty() || a.endswith("/");
return false;
};
const bool case_sensitive =
file_spec_case_sensitive || curr_file.IsCaseSensitive();
if (is_suffix(curr_file_dir, file_spec_dir, case_sensitive) ||
is_suffix(file_spec_dir, curr_file_dir, case_sensitive))
return idx;
}
}
// We didn't find the file, return an invalid index
return UINT32_MAX;
}
// Returns the FileSpec object at index "idx". If "idx" is out of range, then
// an empty FileSpec object will be returned.
const FileSpec &FileSpecList::GetFileSpecAtIndex(size_t idx) const {
if (idx < m_files.size())
return m_files[idx];
static FileSpec g_empty_file_spec;
return g_empty_file_spec;
}
const FileSpec *FileSpecList::GetFileSpecPointerAtIndex(size_t idx) const {
if (idx < m_files.size())
return &m_files[idx];
return nullptr;
}
// Return the size in bytes that this object takes in memory. This returns the
// size in bytes of this object's member variables and any FileSpec objects its
// member variables contain, the result doesn't not include the string values
// for the directories any filenames as those are in shared string pools.
size_t FileSpecList::MemorySize() const {
size_t mem_size = sizeof(FileSpecList);
collection::const_iterator pos, end = m_files.end();
for (pos = m_files.begin(); pos != end; ++pos) {
mem_size += pos->MemorySize();
}
return mem_size;
}
// Return the number of files in the file spec list.
size_t FileSpecList::GetSize() const { return m_files.size(); }
size_t FileSpecList::GetFilesMatchingPartialPath(const char *path,
bool dir_okay,
FileSpecList &matches) {
return 0;
}
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