| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "inode2filename/inode.h" |
| #include "inode2filename/search_directories.h" |
| #include "inode2filename/system_call.h" |
| |
| #include <android-base/logging.h> |
| #include <android-base/strings.h> |
| |
| #include <fruit/fruit.h> |
| #include <gmock/gmock.h> |
| #include <gtest/gtest.h> |
| |
| #include <optional> |
| |
| #include <sys/sysmacros.h> |
| |
| #ifdef makedev |
| #undef makedev |
| #endif |
| |
| |
| // Set this to 1 when debugging by hand to get more output. |
| // Otherwise the spam might be too much when most tests are failing. |
| #define LOG_WITH_VERBOSE 0 |
| // Set this to 1 when debugging by hand to have the logging output go to stderr. |
| // TODO: I think the automated test bots have problems capturing non-logcat output. |
| #define LOG_TO_STDERR 1 |
| |
| // TODO: Might be nice to have these controlled by command line. |
| |
| using namespace std::literals::string_literals; // NOLINT |
| using namespace std::literals::string_view_literals; // NOLINT |
| using namespace iorap::inode2filename; // NOLINT |
| using namespace testing; // NOLINT |
| |
| static void ConfigureLogging() { |
| if (LOG_TO_STDERR) { |
| ::android::base::SetLogger(::android::base::StderrLogger); |
| } |
| if (LOG_WITH_VERBOSE) { |
| ::android::base::SetMinimumLogSeverity(::android::base::VERBOSE); |
| } else { |
| ::android::base::SetMinimumLogSeverity(::android::base::DEBUG); |
| } |
| } |
| |
| // Iterate substrings in 'what' that are separated by 'separator'. |
| // Should be similar to the python 'str.split' behavior. |
| // |
| // Empty separators will have 0 iterations. |
| // |
| // NOTE: this could end up returning empty strings, e.g. '/'.split('/') -> ('', '') |
| // Think of it more like splitting on "$/^" except the $ and ^ become empty strings in the end. |
| // |
| // Zero-copy guarantee (and no dynamic allocation). |
| struct StringSplit { |
| struct SplitIterable; |
| |
| // Return a 0-length substring whose address range is one past the end of 'what'. |
| // Logically equivalent to a "", but its real address will be within 'what'. |
| // |
| // Repeatedly applying this function on itself will return the same value. |
| // |
| // Do not use operator[] on the returned substring, as that would cause undefined |
| // behavior. |
| // |
| // To safely access the pointer, use #data(). The pointer must not be dereferenced, |
| // which would cause undefined behavior. |
| static constexpr std::string_view EmptySubstringAtEnd(std::string_view what) { |
| return what.substr(/*pos*/what.size(), /*count*/0); |
| } |
| |
| // Create an Iterable that will iterate over substrings in 'what' separated by 'separator'. |
| // |
| // Each such 'value' emitted is guaranteed to be: |
| // - a substring of 'what' |
| // - not have any 'separator' substrings |
| // - the address range of 'value' is within the address range of 'what' (or one-past-the-end) |
| // |
| // For example: |
| // |
| // for (std::string_view substr : StringSplit("hello/world"sv, "/"sv)) { |
| // ... // loop 0: substr == "hello" |
| // ... // loop 1: substr == "world" |
| // } |
| static constexpr SplitIterable Iterable(std::string_view what, |
| std::string_view separator) { |
| return SplitIterable{what, separator}; |
| } |
| |
| // Implement LegacyForwardIterator concept. |
| struct SplitIterator { |
| using value_type = std::string_view; |
| using reference = value_type&; |
| using pointer = value_type*; |
| using iterator_category = std::forward_iterator_tag; |
| using difference_type = std::ptrdiff_t; // required by concept, but its meaningless. |
| |
| constexpr bool operator==(const SplitIterator& other) const { |
| if (state != other.state) { |
| return false; |
| } |
| switch (state) { |
| case kNormal: |
| case kNearEnd: |
| return current_split.data() == other.current_split.data(); |
| case kAtEnd: |
| return true; |
| } |
| } |
| |
| constexpr bool operator!=(const SplitIterator& other) const { |
| return !(*this == other); |
| } |
| |
| constexpr std::string_view& operator*() { |
| DCHECK(state != kAtEnd) << "Undefined behavior to dereference end() iterators"; |
| return current_split; |
| } |
| |
| constexpr std::string_view* operator->() { |
| DCHECK(state != kAtEnd) << "Undefined behavior to dereference end() iterators"; |
| return ¤t_split; |
| } |
| |
| /* |
| constexpr const std::string_view& operator*() const { |
| return current_split; |
| } |
| |
| constexpr const std::string_view* operator->() const { |
| return ¤t_split; |
| } |
| */ |
| |
| constexpr SplitIterator& operator++() { |
| UpdateValues(); |
| return *this; |
| } |
| |
| constexpr SplitIterator operator++(int) { |
| SplitIterator copy{*this}; |
| ++(*this); |
| return copy; |
| } |
| |
| private: |
| // Avoid defining constructors etc. We get the default constructors and operator= then. |
| |
| friend struct SplitIterable; // Use below Make functions. |
| |
| constexpr static SplitIterator MakeBegin(std::string_view whole, std::string_view separator) { |
| SplitIterator it; |
| it.state = kNormal; |
| |
| if (separator == "") { |
| it.rest_of_string = StringSplit::EmptySubstringAtEnd(whole); |
| // point to one past-the end (which is legal), also equivalent to "" |
| // the difference being that the address range is guaranteed to be within 'whole' |
| // actually any 0-length subrange would be appropriate here, but just go with the 'end' |
| // because dereferencing it would be obviously bad. |
| it.state = kAtEnd; |
| // Empty separator -> empty # of visits. This seems the most composable. |
| // Note: Need to handle this case especially since find_first_of("") would return the |
| // entire string. |
| } else { |
| it.rest_of_string = whole; |
| it.separator = separator; |
| it.UpdateValues(); |
| } |
| return it; |
| } |
| |
| constexpr static SplitIterator MakeEnd() { |
| SplitIterator it; |
| it.state = kAtEnd; |
| return it; |
| } |
| |
| constexpr void UpdateValues() { |
| switch (state) { |
| case kNormal: |
| break; |
| case kNearEnd: |
| // Address of emitted value is always within subrange of 'whole'. |
| current_split = StringSplit::EmptySubstringAtEnd(rest_of_string); |
| state = kAtEnd; |
| return; |
| case kAtEnd: |
| // Incrementing the 'end()' operator is undefined behavior. |
| DCHECK(false) << "Undefined behavior: Cannot increment end() iterator."; |
| return; |
| } |
| |
| DCHECK(state == kNormal); |
| |
| size_t pos = rest_of_string.find_first_of(separator); |
| if (std::string_view::npos == pos) { |
| // Always visit at least once for non-empty separators, even if the string is empty. |
| |
| current_split = rest_of_string; |
| // Address of emitted value is always within subrange of 'whole'. |
| rest_of_string = rest_of_string.substr(/*pos*/0, /*count*/0); // = "" |
| state = kNearEnd; |
| } else { |
| // includes the starting position of the needle |
| // e.g. "+x-".find_first_of('x') -> 1 |
| |
| // current_split = rest_of_string[0..pos) |
| current_split = rest_of_string.substr(/*pos*/0, pos); |
| |
| // strip '${left}${separator}' from the left hand side. |
| // continue iterating. |
| rest_of_string = rest_of_string.substr(pos + separator.size()); |
| } |
| } |
| |
| public: |
| |
| void PrintToStream(std::ostream& os) const { |
| os << "SplitIterator{"; |
| os << "current_split:\"" << current_split << "\","; |
| os << "rest_of_string:\"" << rest_of_string << "\","; |
| os << "separator:\"" << separator << "\","; |
| os << "state:"; |
| switch (state) { |
| case kNormal: |
| os << "kNormal"; |
| break; |
| case kNearEnd: |
| os << "kNearEnd"; |
| break; |
| case kAtEnd: |
| os << "kAtEnd"; |
| break; |
| } |
| os << "}"; |
| } |
| private: |
| // Not intended to be used directly. |
| // Public visibility to avoid making extra constructors. |
| std::string_view current_split; |
| std::string_view rest_of_string; |
| std::string_view separator; |
| |
| enum State { |
| kNormal, |
| kNearEnd, |
| kAtEnd |
| }; |
| State state{kNormal}; |
| // This cannot have a field initializer due to a clang bug, |
| // https://bugs.llvm.org/show_bug.cgi?id=36684 |
| // So define an explicit constructor below. |
| |
| // This needs to go last: |
| // undefined constructor 'SplitIterator' cannot be used in a constant expression |
| // constexpr SplitIterator() : state{kNormal} {} |
| // constexpr SplitIterator() {} |
| }; |
| |
| friend struct SplitIterable; |
| |
| struct SplitIterable { |
| std::string_view whole; |
| std::string_view separator; |
| |
| constexpr SplitIterator begin() { |
| return SplitIterator::MakeBegin(whole, separator); |
| } |
| |
| constexpr SplitIterator end() { |
| return SplitIterator::MakeEnd(); |
| } |
| }; |
| }; |
| |
| std::ostream& operator<<(std::ostream& os, const StringSplit::SplitIterator& it) { |
| it.PrintToStream(os); |
| return os; |
| } |
| |
| static constexpr const StringSplit::SplitIterator kBlankSplit; |
| |
| // Visit substrings in 'what' that are separated by 'separator'. |
| // Should be similar to the python 'str.split' behavior. |
| // |
| // Empty separators will have 0 visits. |
| // |
| // 'f' is called back for each visit of a substring, this means there's 0 allocations here. |
| // |
| // NOTE: this could end up returning empty strings, e.g. '/'.split('/') -> ('', '') |
| // Think of it more like splitting on "$/^" except the $ and ^ become empty strings in the end. |
| // |
| // (Dynamic allocation free) |
| template <typename Fn> |
| static constexpr void VisitSplitStringView(std::string_view what, |
| std::string_view separator, |
| Fn f) { |
| // Empty separator -> empty # of visits. This seems the most composable. |
| if (separator == "") { |
| // Note: Need to handle this case especially since find_first_of("") would return the |
| // entire string. |
| return; |
| } |
| |
| size_t sep_length = separator.size(); |
| |
| do { |
| size_t pos = what.find_first_of(separator); |
| if (std::string_view::npos == pos) { |
| // Always visit at least once for non-empty separators, even if the string is empty. |
| f(what); |
| break; |
| } else { |
| // includes the starting position of the needle |
| // e.g. "+x-".find_first_of('x') -> 1 |
| |
| // left = what[0..pos) |
| std::string_view left_split = what.substr(/*pos*/0, pos); |
| f(left_split); |
| |
| // strip '${left}${separator}' from the left hand side. |
| // continue iterating. |
| what = what.substr(pos + sep_length); |
| } |
| } |
| while (true); |
| } |
| |
| std::vector<std::string> VisitSplitStringViewVec(std::string_view what, |
| std::string_view separator) { |
| std::vector<std::string> vec; |
| VisitSplitStringView(what, separator, [&vec](auto&& part) { |
| vec.push_back(std::string{part}); |
| }); |
| return vec; |
| } |
| |
| std::vector<std::string> IterableSplitStringViewVec(std::string_view what, |
| std::string_view separator) { |
| auto iterable = StringSplit::Iterable(what, separator); |
| std::vector<std::string> vec{iterable.begin(), iterable.end()}; |
| |
| return vec; |
| } |
| |
| TEST(SplitStringView, Tests) { |
| EXPECT_THAT(VisitSplitStringViewVec("", ""), IsEmpty()); |
| EXPECT_THAT(VisitSplitStringViewVec("abcdef", ""), IsEmpty()); |
| EXPECT_THAT(VisitSplitStringViewVec("", "/"), ElementsAre(""s)); |
| EXPECT_THAT(VisitSplitStringViewVec("/", "/"), ElementsAre(""s, ""s)); |
| EXPECT_THAT(VisitSplitStringViewVec("//", "/"), ElementsAre(""s, ""s, ""s)); |
| EXPECT_THAT(VisitSplitStringViewVec("/hello", "/"), ElementsAre(""s, "hello"s)); |
| EXPECT_THAT(VisitSplitStringViewVec("/hello/world", "/"), ElementsAre(""s, "hello"s, "world"s)); |
| EXPECT_THAT(VisitSplitStringViewVec("bar", "/"), ElementsAre("bar"s)); |
| EXPECT_THAT(VisitSplitStringViewVec("bar/baz", "/"), ElementsAre("bar"s, "baz"s)); |
| |
| EXPECT_THAT(IterableSplitStringViewVec("", ""), IsEmpty()); |
| EXPECT_THAT(IterableSplitStringViewVec("abcdef", ""), IsEmpty()); |
| EXPECT_THAT(IterableSplitStringViewVec("", "/"), ElementsAre(""s)); |
| EXPECT_THAT(IterableSplitStringViewVec("/", "/"), ElementsAre(""s, ""s)); |
| EXPECT_THAT(IterableSplitStringViewVec("//", "/"), ElementsAre(""s, ""s, ""s)); |
| EXPECT_THAT(IterableSplitStringViewVec("/hello", "/"), ElementsAre(""s, "hello"s)); |
| EXPECT_THAT(IterableSplitStringViewVec("/hello/world", "/"), ElementsAre(""s, "hello"s, "world"s)); |
| EXPECT_THAT(IterableSplitStringViewVec("bar", "/"), ElementsAre("bar"s)); |
| EXPECT_THAT(IterableSplitStringViewVec("bar/baz", "/"), ElementsAre("bar"s, "baz"s)); |
| |
| EXPECT_THAT(IterableSplitStringViewVec("/hello", "/"), ElementsAre(""sv, "hello"sv)); |
| EXPECT_THAT(IterableSplitStringViewVec("/hello///", "/"), ElementsAre(""sv, "hello"sv, ""sv, ""sv, ""sv)); |
| |
| } |
| |
| |
| // Allocation-free immutable path representation and manipulation. |
| // |
| // A PurePath is logically represented by its 'parts', which is a view of each component. |
| // |
| // Examples: |
| // parts('foo/bar') -> ['foo', 'bar'] |
| // parts('/bar') -> ['/', 'bar'] |
| // parts('') -> [] |
| // parts('.') -> [] |
| // parts('baz//') -> ['baz'] |
| // parts('hello/././world') -> ['hello', 'world'] |
| // parts('../down/../down2') -> ['..', 'down', '..', 'down2'] |
| // |
| // See also #VisitParts which allows an allocation-free traversal of the parts. |
| // |
| // Memory allocation/ownership guarantees: |
| // * Functions marked as 'constexpr' are guaranteed never to allocate (zero-copy). |
| // * Functions not marked as 'constexpr' and returning a PurePath will always return an object |
| // with its own internal copy of the underlying data (i.e. the memory is not borrowed). |
| struct PurePath { |
| using part_type = std::string_view; |
| |
| struct PartIterable; |
| |
| // Create an empty PurePath. |
| // |
| // Empty paths are considered to have 0 parts, i.e. |
| // PurePath{}.VisitParts() -> [] |
| constexpr PurePath() : path_(".") { |
| } |
| |
| // Create a PurePath from a string view. |
| // |
| // This borrows memory ownership of the string view. If you wish to make a copy, |
| // use the PurePath(std::string) constructor. |
| // |
| // Paths are non-normalized (i.e. redundant up-references, "..", are not stripped), |
| // you may wish to call 'NormalizePath' if this is important. |
| constexpr PurePath(std::string_view path) : path_(path) { |
| /// : owner_(std::string(path)), path_(owner_.value()) { |
| // TODO: no copy |
| } |
| |
| constexpr PurePath(const char* path) : PurePath(std::string_view(path)) {} |
| |
| // Creates a PurePath from a string. |
| // |
| // The PurePath owns the memory of the string path. |
| // |
| // Only accepts movable strings, so that the cheaper borrowing (string_view) |
| // constructor is used by default. |
| PurePath(std::string&& path) : owner_(std::move(path)), path_(owner_.value()) { |
| } |
| |
| // Return an Iterable, which upon traversing would |
| // return each part as an std::string_view. |
| // |
| // Empty and '.' path components are not visited, |
| // effectively ignoring redundant // and intermediate '.' components. |
| // |
| // To also ignore redundant up-references, see #NormalizePath. |
| // |
| // Example: |
| // for (std::string_view part : PurePath("hello//world/./").IterateParts()) { |
| // // loop 0, part == "hello"sv |
| // // loop 1, part == "world"sv |
| // } |
| constexpr PartIterable IterateParts() const { |
| return PartIterable::FromPath(*this); |
| } |
| |
| // f is a function<void(std::string_view part)> |
| // |
| // Invoke 'f' repeatedly on each logical part of this path. |
| // |
| // Empty and '.' path components are not visited, |
| // effectively ignoring redundant // and intermediate '.' components. |
| // |
| // To also ignore redundant up-references, see #NormalizePath. |
| template <typename Fn> |
| constexpr void VisitParts(Fn f) const { |
| // Note: Near the top to avoid -Wundefined-inline warnings. |
| if (IsAbsolute()) { |
| f(kRoot); // When we split, we no longer visit the '/' tokens. Handle root explicitly. |
| } |
| VisitSplitStringView(path_, |
| kRoot, |
| [&f](auto&& substr) { |
| // Ignore duplicate /// and also . |
| // |
| // e.g. |
| // '//foo' -> ['/', 'foo'] |
| // './foo' -> ['foo'] |
| // |
| // This is consistent with PurePath.parts implementation. |
| // |
| // Note that redundant .. are not removed, e.g. |
| // '../foo/..' is not rewritten to ['..'] |
| // |
| // Use 'NormalizePath' to do this explicitly. |
| if (!substr.empty() && substr != ".") { |
| f(substr); |
| } |
| }); |
| } |
| |
| |
| // A path is considered equal to another path if all of the parts are identical. |
| /*constexpr*/ bool operator==(const PurePath& other) const { |
| /*if (path_ == other.path_) { |
| return true; |
| } else*/ { |
| auto this_range = IterateParts(); |
| auto other_range = other.IterateParts(); |
| |
| return std::equal(this_range.begin(), |
| this_range.end(), |
| other_range.begin(), |
| other_range.end()); |
| } |
| } |
| |
| // Returns the name component (if any). |
| // |
| // Logically equivalent to returning the last part unless: |
| // - the last part is the root '/' |
| // - there are no parts |
| // |
| // If the above conditions do not hold, return the empty string. |
| constexpr std::string_view Name() const { |
| std::string_view component = StringSplit::EmptySubstringAtEnd(path_); |
| |
| size_t count = 0; |
| for (auto&& part : IterateParts()) { |
| if (count++ == 0 && part == kRoot) { |
| continue; // '/' does not count as a name. |
| } else { |
| DCHECK_NE(part, kRoot); |
| } |
| |
| component = part; |
| } |
| |
| return component; |
| } |
| |
| // Find the parent of this path. |
| // |
| // This is usually the path with the last part stripped off, with some special cases: |
| // - The parent of '/' is always '/' (recursive). |
| // - The parent of '' is always '..'. |
| // - The parent of '..[/..]*' is an additional '/..' appended. |
| // |
| // The parent is always distinct (i.e. not equal to this) except for '/', whose parent |
| // is itself. |
| /*constexpr*/ PurePath Parent() const { |
| size_t parts_count = 0; |
| size_t upreference_count = 0; |
| // TODO: this should be constexpr, but it complains about PurePath not being a literal type. |
| |
| for (auto&& part : IterateParts()) { |
| ++parts_count; |
| |
| if (part == "..") { |
| ++upreference_count; |
| } |
| } |
| |
| if (upreference_count == parts_count) { // Could also have 0 parts. |
| // "../../../" etc. No other parts are there. |
| // We need to add another '..' |
| |
| // Explicitly handle a few iterations to remain constexpr. |
| switch (upreference_count) { |
| case 0: |
| return {".."}; |
| case 1: |
| return {"../.."}; |
| case 2: |
| return {"../../.."}; |
| case 3: |
| return {"../../../.."}; |
| default: |
| break; |
| } |
| |
| // As a special case, this part of the function is not constexpr. |
| std::string built_parent_string = ".."; |
| for (size_t i = 0; i < upreference_count; ++i) { |
| built_parent_string += kRoot; |
| built_parent_string += ".."; |
| } |
| |
| return PurePath{std::move(built_parent_string)}; |
| |
| } else if (parts_count == 1) { |
| if (IsAbsolute()) { |
| // "/" + ".." is still "/" |
| return {kRoot}; |
| } else { |
| // <NOT-ROOT-OR-UP-REFERENCE> + ".." is just "." |
| return {}; |
| } |
| } else { |
| DCHECK_GE(parts_count, 2u); |
| |
| // Find the last iterator before we hit the end. |
| std::optional<std::string_view> last; |
| std::optional<std::string_view> prev_last; |
| for (auto&& part : IterateParts()) { |
| prev_last = last; |
| last = part; |
| } |
| |
| DCHECK(last.has_value()); |
| DCHECK(prev_last.has_value()); |
| |
| std::string_view& prev_last_view = *prev_last; |
| // prev_last_view must be within address of subrange_. |
| DCHECK_GE(prev_last_view.data(), path_.data()); |
| DCHECK_LE(prev_last_view.data() + prev_last_view.size(), path_.data() + path_.size()); |
| |
| // take advantage of the address subrange property by calculating a new substring |
| // for the parent. |
| size_t length = prev_last_view.data() + prev_last_view.size() - path_.data(); |
| std::string_view parent = std::string_view{path_.data(), length} ; |
| |
| if ((false)) { |
| LOG(DEBUG) << "PurePath::Parent of \"" << path_ << "\" returns \"" << parent << "\""; |
| } |
| return { parent }; |
| } |
| } |
| |
| // A path is considered non-equal to another path if one or more of the parts differ. |
| constexpr bool operator!=(const PurePath& other) const { |
| return !(*this == other); |
| } |
| |
| // Return the string view, i.e. to pass to other classes that need a string-like type. |
| // |
| // This passes in the original string as was passed into the constructor. |
| // The exact char-by-char representation may be different than concatenating all the parts |
| // together. |
| // |
| // See also #NormalizePath if you want to get a 1:1 mapping between a PurePath |
| // and a string. |
| constexpr std::string_view AsStringView() const { |
| // This is slightly inconsistent with PurePath#bytes because it actually collapses the string |
| // to the equivalent of concatenating the parts together. But we prefer not to do that, |
| // since it just causes more work and more allocations unnecessarily. |
| // |
| // This is generally not-noticeable when operating with the path at the logical layer. |
| return path_; |
| } |
| |
| constexpr bool IsAbsolute() const { |
| return !path_.empty() && path_[0] == '/'; // left-whitespace is considered significant. |
| } |
| |
| // Join one or more paths together. |
| // |
| // Logically equivalent to calling JoinPath(other) repeatedly. |
| template <typename It> |
| PurePath JoinPath(It begin, It end) const { |
| std::vector<std::string_view> parts_stack = PartsList(); |
| |
| while (begin != end) { |
| const PurePath& path = *begin; |
| |
| if (path.IsAbsolute()) { |
| parts_stack = path.PartsList(); |
| } else { |
| path.VisitParts([&parts_stack](auto&& part) { |
| parts_stack.push_back(part); |
| }); |
| } |
| |
| ++begin; |
| } |
| |
| return {JoinPartsList(parts_stack)}; |
| } |
| |
| // Join two paths together: |
| // |
| // If 'other' is an absolute path, it is returned. |
| // |
| // Otherwise, return the concatenation of the parts (this and other) as a new path. |
| // (The returned path is always owned by the caller -- this is triggering an allocation every |
| // time). |
| PurePath JoinPath(const PurePath& other) const { |
| if (other.IsAbsolute()) { |
| return other.OwningCopy(); |
| } else { |
| std::vector<std::string_view> parts_stack = PartsList(); |
| other.VisitParts([&parts_stack](auto&& part) { |
| parts_stack.push_back(part); |
| }); |
| return {JoinPartsList(parts_stack)}; |
| } |
| } |
| |
| constexpr PurePath(const PurePath& other) { |
| if (this == &other) { |
| return; |
| } |
| if (other.owner_) { // stay constexpr for non-owning paths. |
| owner_ = other.owner_; |
| path_ = *owner_; // path_ always points to owner if possible. |
| } else { |
| path_ = other.path_; |
| } |
| } |
| |
| constexpr PurePath(PurePath&& other) { |
| if (this == &other) { |
| return; |
| } |
| if (other.owner_) { // stay constexpr for non-owning paths. |
| owner_ = std::move(other.owner_); |
| path_ = *owner_; // path_ always points to owner if possible. |
| } else { |
| path_ = std::move(other.path_); |
| } |
| } |
| |
| // "/.." -> "/" |
| // "../foo/.." -> ".." |
| // etc. |
| // |
| // PurePath returned always owns its own memory (this always triggers an allocation). |
| PurePath NormalizePath() const { |
| if (IsNormalized()) { |
| return OwningCopy(); // Don't call this function if you want to avoid copies! |
| } else { |
| // Invariant: [/]? <UP-REFERENCE>* <NOT-AN-UP-REFERENCE>* |
| std::vector<std::string_view> parts_stack; |
| size_t not_an_up_reference = 0; |
| |
| // Special handling of absolute paths: |
| // '/' '..'* -> '/' |
| // |
| // Otherwise, remove the last part when encountering redundant up-references: |
| // e.g. '../foo/bar/baz/..' -> '../foo/bar' |
| VisitParts([&](auto&& part) { |
| if (part == "..") { |
| // <UP-REFERENCE> |
| if (not_an_up_reference > 0) { |
| // Remove redundant up-references. |
| DCHECK(!parts_stack.empty()); |
| |
| // Could trigger de-normalization, remove redundant part from stack. |
| |
| if (parts_stack.back() != kRoot) { // '/' '..'* -> '/' |
| parts_stack.pop_back(); |
| --not_an_up_reference; // '../foo/..' -> '..' |
| } |
| } else { |
| // Did not trigger a denormalization. |
| parts_stack.push_back(part); |
| } |
| } else { |
| // <NOT-AN-UP-REFERENCE> or '/' (note: / is only visited the first time). |
| parts_stack.push_back(part); |
| ++not_an_up_reference; |
| } |
| }); |
| |
| // join again with empty delimiter. |
| std::string concat = JoinPartsList(std::move(parts_stack)); |
| |
| return PurePath(std::move(concat)); |
| } |
| } |
| |
| // Returns true if 'NormalizePath' would return a Path with a different parts representation. |
| // |
| // (This is not as strict as normalizing the underlying string, i.e. redundant '.' and "//" |
| // in AsStringView() could still be seen). |
| // |
| // A path is considered non-normalized unless all up-references are at the start. |
| // |
| // NormalizedString := <UP-REFERENCE>* <NOT-AN-UP-REFERENCE>* |
| // |
| // where each token is a 'part' returned by VisitParts. |
| // |
| // Returning false here means that 'NormalizePath' will also trigger an extra allocation. |
| constexpr bool IsNormalized() const { |
| size_t not_an_up_reference = 0; |
| bool is_normalized = true; |
| |
| // Note that this also handles '/' [..]* because '/' is treated identically to non-up-refs. |
| VisitParts([&](auto&& part) { |
| // Remove redundant up-references. |
| if (part != "..") { |
| ++not_an_up_reference; |
| } else { // part == ".." |
| if (not_an_up_reference > 0) { // <not-an-up-reference> <up-reference> |
| is_normalized = false; |
| } |
| } |
| }); |
| |
| return is_normalized; |
| } |
| |
| // Implement LegacyForwardIterator concept. |
| struct PartIterator { |
| using value_type = std::string_view; |
| using reference = value_type&; |
| using pointer = value_type*; |
| using iterator_category = std::forward_iterator_tag; |
| using difference_type = std::ptrdiff_t; // required by concept, but its meaningless. |
| |
| private: |
| enum State { |
| kUninitialized, |
| kAtRoot, |
| kInitialized, |
| kAtEnd |
| }; |
| |
| using SplitIterable = StringSplit::SplitIterable; |
| using SplitIterator = StringSplit::SplitIterator; |
| |
| State state{kUninitialized}; |
| value_type cur_value; |
| SplitIterator cur; |
| SplitIterator end; |
| |
| friend std::ostream& operator<<(std::ostream& os, const PartIterator& it); |
| |
| // Print out extra debugging information when looping through the iterator. |
| static constexpr bool kLogDebug = false; |
| |
| public: |
| void PrintToStream(std::ostream& os) const { |
| os << "PartIterator{"; |
| os << "state:"; |
| switch (state) { |
| case kUninitialized: |
| os << "kUninitialized"; |
| break; |
| case kAtRoot: |
| os << "kAtRoot"; |
| break; |
| case kInitialized: |
| os << "kInitialized"; |
| break; |
| case kAtEnd: |
| os << "kAtEnd"; |
| break; |
| } |
| os << ","; |
| os << "cur_value:\"" << cur_value << "\","; |
| os << "cur:" << cur << ","; |
| os << "end:" << end << ","; |
| os << "}"; |
| } |
| |
| /*constexpr*/ bool operator==(const PartIterator& other) const { |
| DCHECK(state != kUninitialized) << "State must be initialized"; |
| DCHECK(other.state != kUninitialized) << "Other state must be initialized"; |
| |
| if (kLogDebug) { |
| LOG(DEBUG) << "PartIterator =="; |
| } |
| |
| if (state != other.state) { |
| if (kLogDebug) { |
| LOG(DEBUG) << "State: " << static_cast<int>(state); |
| LOG(DEBUG) << "Other State: " << static_cast<int>(other.state); |
| |
| LOG(DEBUG) << "== states differ (&self=" << this << ",&other=" << &other << ")"; |
| LOG(DEBUG) << "Self=" << *this; |
| LOG(DEBUG) << "Other=" << other; |
| } |
| return false; |
| } |
| |
| switch (state) { |
| case kAtRoot: |
| DCHECK(cur != end); |
| return cur == other.cur; |
| case kInitialized: |
| DCHECK(cur != end); |
| return cur == other.cur; |
| case kAtEnd: |
| DCHECK(cur == end); |
| DCHECK(cur == other.cur); |
| return true; |
| default: |
| DCHECK(false); // -Werror -Wswitch |
| return true; |
| } |
| } |
| |
| constexpr bool operator!=(const PartIterator& other) const { |
| return !(*this == other); |
| } |
| |
| constexpr reference operator*() { |
| DCHECK(state != kAtEnd) << "Undefined behavior to dereference end() iterators"; |
| return cur_value; // Can't use *cur because we could yield a '/'. |
| } |
| |
| constexpr pointer operator->() { |
| DCHECK(state != kAtEnd) << "Undefined behavior to dereference end() iterators"; |
| return &cur_value; // Can't use &*cur because we could yield a '/'. |
| } |
| |
| /* |
| constexpr const reference operator*() const { |
| return *cur; |
| } |
| |
| constexpr const pointer operator->() const { |
| return &*cur; |
| }*/ |
| |
| constexpr PartIterator& operator++() { |
| DCHECK(state != kAtEnd) << "Undefined behavior to increment end() iterators"; |
| UpdateValues(); |
| return *this; |
| } |
| |
| constexpr PartIterator operator++(int) { |
| PartIterator copy{*this}; |
| ++(*this); |
| return copy; |
| } |
| |
| constexpr static PartIterator MakeBegin(SplitIterable& split_iterable, |
| std::string_view whole_path) { |
| SplitIterator begin = split_iterable.begin(); |
| SplitIterator end = split_iterable.end(); |
| |
| PartIterator it; |
| it.end = end; |
| |
| const bool is_absolute = !whole_path.empty() && whole_path[0] == '/'; |
| |
| if (begin == end) { |
| it.cur = end; |
| it.state = kAtEnd; |
| // I'm not sure this path is actually possible due to the nature of how StringSplit |
| // works, but it's better to cover this case just to be safe. |
| DCHECK(false) << "unreachable code, splitting by '/' always returns at least 1 split"; |
| } else { |
| it.cur = begin; |
| |
| if (is_absolute) { |
| // When we split, we no longer visit the '/' tokens. Handle root explicitly. |
| // |
| // All emitted values must be within the address range of the whole path. |
| it.cur_value = whole_path.substr(0, /*count*/1); // '/' |
| DCHECK_EQ(it.cur_value, "/"sv); |
| it.state = kAtRoot; |
| } else { |
| it.state = kUninitialized; |
| it.UpdateValues(); |
| } |
| } |
| |
| return it; |
| } |
| |
| constexpr static PartIterator MakeEnd(SplitIterable& split_iterable) { |
| SplitIterator end = split_iterable.end(); |
| |
| PartIterator it; |
| it.cur = end; |
| it.end = end; |
| it.state = kAtEnd; |
| |
| return it; |
| } |
| |
| private: |
| void UpdateValues() { |
| State previous_state = state; |
| |
| if (kLogDebug) { |
| LOG(DEBUG) << "operator ++ // UpdateValues (&this=" << this << ")"; |
| } |
| |
| if (state == kAtEnd) { |
| return; |
| } |
| |
| if (state == kInitialized) { |
| DCHECK(IsValidCurrent()); |
| } |
| |
| // '/' has no corresponding split, so it's handled as a special case. |
| // Furthermore, any splits that are empty or "." are skipped since they aren't |
| // considered to be a valid path component. |
| // |
| // The below code handles these special cases. |
| |
| if (state == kAtRoot) { |
| state = kUninitialized; |
| } |
| |
| if (state == kUninitialized) { |
| // If we are already at a valid value stop. |
| if (cur != end && IsValidCurrent()) { |
| state = kInitialized; |
| cur_value = *cur; |
| return; |
| } |
| |
| // Otherwise we are either at the end, or |
| // the current value is invalid (e.g. empty or '.'). |
| state = kInitialized; |
| } |
| |
| DCHECK(state == kInitialized) << static_cast<int>(state); |
| if (previous_state == kInitialized) { |
| // If we fell-through from kAtRoot or kUninitialized |
| // then there's no guarantee that the current value is valid. |
| DCHECK(IsValidCurrent()); |
| } |
| |
| auto old_cur_value = *cur; |
| |
| // Already at the end. Switch to end state. |
| if (cur == end) { |
| state = kAtEnd; |
| LOG(DEBUG) << "Updated state is: kAtEnd (1)"; |
| return; |
| } |
| |
| // Skip ahead. |
| // We may or may not be at a valid value now. |
| ++cur; |
| |
| // If we aren't at a valid value yet, then keep going forward |
| // until we hit a valid value (or we exhaust the iterator). |
| while (cur != end && !IsValidCurrent()) { |
| ++cur; |
| } |
| |
| if (cur == end) { |
| state = kAtEnd; |
| } else { |
| // We reached a valid value before exhausting the iterator. |
| |
| // Stay in the 'Initialized' state. |
| DCHECK(IsValidCurrent()) << *cur; |
| cur_value = *cur; |
| |
| // After we go forward, the old and current value cannot match. |
| DCHECK_NE(&cur_value[0], &old_cur_value[0]); |
| } |
| |
| if (kLogDebug) { |
| LOG(DEBUG) << "Updated state is: " << state; |
| } |
| } |
| |
| constexpr bool IsValidCurrent() { |
| if (cur->empty()) { |
| return false; |
| } else if (*cur == ".") { |
| return false; |
| } |
| |
| return true; |
| } |
| }; |
| |
| friend struct PartIterable; |
| |
| struct PartIterable { |
| constexpr static PartIterable FromPath(const PurePath& path) { |
| return PartIterable{ |
| path.AsStringView(), |
| StringSplit::Iterable(path.AsStringView(), PurePath::kRoot), |
| }; |
| } |
| |
| constexpr PartIterator begin() { |
| return PartIterator::MakeBegin(split_iterable, whole_path); |
| } |
| |
| constexpr PartIterator end() { |
| return PartIterator::MakeEnd(split_iterable); |
| } |
| |
| std::string_view whole_path; |
| StringSplit::SplitIterable split_iterable; |
| }; |
| |
| // This isn't performance-efficient, but it might be needed by some functions |
| // that have to allocate anyway such as JoinPaths. |
| // |
| // Intended only for testing. |
| std::vector<std::string_view> PartsList() const { |
| PartIterable iterable = IterateParts(); |
| |
| std::vector<std::string_view> parts{iterable.begin(), iterable.end()}; |
| return parts; |
| } |
| |
| // Does this PurePath own the underlying memory? |
| // |
| // true = borrowing memory from someone else (might not be safe to retain this object) |
| // false = owns its own memory (can keep this object indefinitely long) |
| // |
| // Currently intended only for testing. |
| constexpr bool IsBorrowed() const { |
| return !owner_.has_value(); |
| } |
| |
| private: |
| // Return a PurePath that owns its own memory. |
| // |
| // This way functions which 'may' allocate memory turn into functions |
| // that always allocate memory, and avoid a dangling reference. |
| const PurePath OwningCopy() const { |
| std::string make_copy{path_}; |
| return PurePath{std::move(make_copy)}; |
| } |
| |
| constexpr size_t PartsCount() const { |
| size_t count = 0; |
| VisitParts([&count](auto&& /*part*/) { |
| ++count; |
| }); |
| return count; |
| } |
| |
| // Basically a string join with an empty delimiter. |
| template <typename Container> |
| static std::string JoinPartsList(Container&& c) { |
| std::string build; |
| for (auto begin = c.begin(), end = c.end(); begin != end; ++begin) { |
| build += *begin; |
| |
| // TODO: use forward_dependent here. |
| } |
| |
| return build; |
| } |
| |
| // This might be empty, in which case path_ is just a temporary borrow of path_. |
| std::optional<std::string> owner_; |
| std::string_view path_; // points to owner_ if there's a value there. |
| |
| // TODO: this is a bit error-prone, so we might want to refactor into a |
| // never-owning PathView and an always-owning PurePath. |
| |
| static constexpr std::string_view kRoot = "/"; |
| }; |
| |
| std::ostream& operator<<(std::ostream& os, const PurePath::PartIterator& it) { |
| it.PrintToStream(os); |
| return os; |
| } |
| |
| static constexpr const PurePath::PartIterator kMakeMeABlank; |
| |
| std::ostream& operator<<(std::ostream& os, const PurePath& path) { |
| os << path.AsStringView(); |
| return os; |
| } |
| |
| TEST(PurePathTest, Ctor) { |
| ConfigureLogging(); |
| |
| EXPECT_EQ(PurePath{}.AsStringView(), "."sv); |
| EXPECT_EQ(PurePath{""}.AsStringView(), ""sv); |
| EXPECT_EQ(PurePath{""sv}.AsStringView(), ""sv); |
| EXPECT_EQ(PurePath{""s}.AsStringView(), ""sv); |
| EXPECT_EQ(PurePath{"/hello/world"}.AsStringView(), "/hello/world"sv); |
| EXPECT_EQ(PurePath{"/hello/world"s}.AsStringView(), "/hello/world"sv); |
| EXPECT_EQ(PurePath{"/hello/world"sv}.AsStringView(), "/hello/world"sv); |
| EXPECT_EQ(PurePath{"hello/world"}.AsStringView(), "hello/world"sv); |
| EXPECT_EQ(PurePath{"hello/world"s}.AsStringView(), "hello/world"sv); |
| EXPECT_EQ(PurePath{"hello/world"sv}.AsStringView(), "hello/world"sv); |
| |
| // Ensure that std::string is only owning memory when we move a string into it. |
| // Otherwise, always take the string_view constructor. |
| EXPECT_FALSE(PurePath{std::string{"hello"}}.IsBorrowed()); |
| std::string hello{"hello"}; |
| EXPECT_TRUE(PurePath{hello}.IsBorrowed()); |
| EXPECT_FALSE(PurePath{std::move(hello)}.IsBorrowed()); |
| } |
| |
| TEST(PurePathTest, Parts) { |
| ConfigureLogging(); |
| |
| EXPECT_THAT(PurePath{}.PartsList(), IsEmpty()); |
| EXPECT_THAT(PurePath{"."}.PartsList(), IsEmpty()); |
| EXPECT_THAT(PurePath{"./"}.PartsList(), IsEmpty()); |
| EXPECT_THAT(PurePath{"./."}.PartsList(), IsEmpty()); |
| EXPECT_THAT(PurePath{".///"}.PartsList(), IsEmpty()); |
| EXPECT_THAT(PurePath{"./././."}.PartsList(), IsEmpty()); |
| EXPECT_THAT(PurePath{"/"s}.PartsList(), ElementsAre("/"sv)); |
| EXPECT_THAT(PurePath{"///"s}.PartsList(), ElementsAre("/"sv)); |
| EXPECT_THAT(PurePath{"/hello"s}.PartsList(), ElementsAre("/"sv, "hello"sv)); |
| EXPECT_THAT(PurePath{"/hello///"s}.PartsList(), ElementsAre("/"sv, "hello"sv)); |
| EXPECT_THAT(PurePath{"/hello/world"s}.PartsList(), ElementsAre("/"sv, "hello"sv, "world"sv)); |
| EXPECT_THAT(PurePath{"hello/world"sv}.PartsList(), ElementsAre("hello"sv, "world"sv)); |
| EXPECT_THAT(PurePath{"hello/world"sv}.PartsList(), ElementsAre("hello"sv, "world"sv)); |
| EXPECT_THAT(PurePath{"hello//world"sv}.PartsList(), ElementsAre("hello"sv, "world"sv)); |
| EXPECT_THAT(PurePath{"hello/./world"sv}.PartsList(), ElementsAre("hello"sv, "world"sv)); |
| EXPECT_THAT(PurePath{"hello/./world/././"sv}.PartsList(), ElementsAre("hello"sv, "world"sv)); |
| } |
| |
| #define EXPECT_PATH_EQ(lhs, rhs) EXPECT_EQ(PurePath{lhs}, PurePath{rhs}) |
| #define EXPECT_PATH_NE(lhs, rhs) EXPECT_NE(PurePath{lhs}, PurePath{rhs}) |
| |
| TEST(PurePathTest, Equals) { |
| ConfigureLogging(); |
| |
| EXPECT_PATH_EQ("", ""); |
| EXPECT_PATH_EQ(".", "."); |
| EXPECT_PATH_EQ("", "."); |
| EXPECT_PATH_EQ("./", "."); |
| EXPECT_PATH_EQ(".////", "."); |
| EXPECT_PATH_EQ(".//././", "."); |
| EXPECT_PATH_EQ("hello/world//", "hello/world"); |
| EXPECT_PATH_EQ("hello/world//", "./hello/world"); |
| EXPECT_PATH_EQ("//hello/world//", "/hello/world"); |
| EXPECT_PATH_EQ("/./hello/world//", "/hello/world/./"); |
| EXPECT_PATH_EQ("..", ".././."); |
| EXPECT_PATH_EQ("../..//", "../.."); |
| |
| // Also make sure that the path is not equal to its parent [which is a substring]. |
| EXPECT_PATH_NE("/data", "/data/baz"); |
| EXPECT_PATH_NE("/data/././baz", "/data/baz/bar"); |
| |
| // Also make sure its not equal when the other path shares the same underlying starting data(). |
| { |
| std::string_view view = "/data/bar"; |
| EXPECT_PATH_NE(PurePath{view}, PurePath{view.substr(/*pos*/0, /*count*/5)}); |
| } |
| } |
| |
| // A parent is always different than its child (except for '/'). |
| #define EXPECT_PATH_PARENT_EQ(actual, expected) \ |
| EXPECT_EQ(PurePath{actual}.Parent(), PurePath{expected}); \ |
| { auto act = PurePath{actual}; \ |
| EXPECT_NE(act, act.Parent()); \ |
| } |
| TEST(PurePathTest, Parent) { |
| ConfigureLogging(); |
| |
| // Special recursive case: parent of '/' is still '/'. |
| EXPECT_EQ(PurePath{"/"}, PurePath{"/"}.Parent()); |
| EXPECT_NE(PurePath{""}, PurePath{"/"}.Parent()); |
| |
| // All other cases are non-recursive. |
| EXPECT_PATH_PARENT_EQ("", ".."); |
| EXPECT_PATH_PARENT_EQ("..", "../.."); |
| EXPECT_PATH_PARENT_EQ("../..", "../../.."); |
| EXPECT_PATH_PARENT_EQ("../../../../../../../../..", "../../../../../../../../../.."); |
| |
| EXPECT_PATH_PARENT_EQ("/abc", "/"); |
| EXPECT_PATH_PARENT_EQ("abc", ""); |
| |
| EXPECT_PATH_PARENT_EQ("/foo/bar", "/foo"); |
| EXPECT_PATH_PARENT_EQ("/foo/bar/b", "/foo/bar"); |
| EXPECT_PATH_PARENT_EQ("/foo/bar///baz///././/nay", "/foo/bar/baz"); |
| |
| EXPECT_PATH_PARENT_EQ("foo/bar", "foo"); |
| EXPECT_PATH_PARENT_EQ("foo/bar/b", "foo/bar"); |
| EXPECT_PATH_PARENT_EQ("foo/bar///baz///././/nay", "foo/bar/baz"); |
| |
| EXPECT_PATH_PARENT_EQ("../foo/bar", "../foo"); |
| EXPECT_PATH_PARENT_EQ("../foo/bar/b", "../foo/bar"); |
| EXPECT_PATH_PARENT_EQ("../foo/bar///baz///././/nay", "../foo/bar/baz"); |
| } |
| |
| #define EXPECT_PATH_NAME_EQ(expected, actual) EXPECT_EQ(PurePath{actual}, PurePath{expected}.Name()) |
| TEST(PurePathTest, Name) { |
| ConfigureLogging(); |
| |
| EXPECT_PATH_NAME_EQ("", ""); |
| EXPECT_PATH_NAME_EQ("..", ".."); |
| EXPECT_PATH_NAME_EQ("../..", ".."); |
| EXPECT_PATH_NAME_EQ("../../../../../../../../..", ".."); |
| |
| EXPECT_PATH_NAME_EQ("/", ""); |
| EXPECT_PATH_NAME_EQ("/abc", "abc"); |
| EXPECT_PATH_NAME_EQ("abc", "abc"); |
| |
| EXPECT_PATH_NAME_EQ("/foo/bar", "bar"); |
| EXPECT_PATH_NAME_EQ("/foo/bar/b", "b"); |
| EXPECT_PATH_NAME_EQ("/foo/bar///baz///././/nay", "nay"); |
| EXPECT_PATH_NAME_EQ("/foo/bar///baz///././/nay//./.", "nay"); |
| |
| EXPECT_PATH_NAME_EQ("foo/bar", "bar"); |
| EXPECT_PATH_NAME_EQ("foo/bar/b", "b"); |
| EXPECT_PATH_NAME_EQ("foo/bar///baz///././/nay", "nay"); |
| |
| EXPECT_PATH_NAME_EQ("../foo/bar", "bar"); |
| EXPECT_PATH_NAME_EQ("../foo/bar/b", "b"); |
| EXPECT_PATH_NAME_EQ("../foo/bar///baz///././/nay", "nay"); |
| } |
| |
| |
| struct PathEntry { |
| Inode inode; |
| PurePath path; // full path |
| |
| static std::vector<PathEntry> Zip(std::vector<Inode>& inodes, std::vector<std::string>& paths) { |
| CHECK_EQ(inodes.size(), paths.size()); |
| |
| std::vector<PathEntry> entries; |
| |
| static bool debug = true; // Print only once. |
| |
| if (debug) { |
| LOG(DEBUG) << "PathEntry::Zip (begin)"; |
| } |
| |
| for (size_t i = 0; i < inodes.size(); ++i) { |
| entries.push_back(PathEntry{inodes[i], PurePath{std::string{paths[i]}}}); |
| |
| // TODO: this seems awkward, maybe refactor into PurePath + PurePathView ? |
| DCHECK(entries[i].path.IsBorrowed() == false); |
| |
| if (debug) { |
| LOG(DEBUG) << "PathEntry - add " << inodes[i] << " at '" << paths[i] << "'"; |
| } |
| } |
| |
| debug = false; |
| |
| return entries; |
| } |
| }; |
| |
| std::ostream& operator<<(std::ostream& os, const PathEntry& path_entry) { |
| os << "PathEntry{inode=" << path_entry.inode << ",path=\"" << path_entry.path << "\"}"; |
| return os; |
| } |
| |
| // This super-inefficient class models a Tree to a list of absolute path names. |
| // Obviously intended only for testing, since its algorithmically suboptimal. |
| struct PathEntryTree { |
| std::vector<PathEntry> entries; |
| |
| static constexpr bool debug{false}; |
| #define PET_LOG_DEBUG if (debug) LOG(DEBUG) |
| |
| std::optional<PathEntry> GetEntryFor(const std::string& path_name) { |
| PurePath path{path_name}; |
| for (auto&& entry : entries) { |
| if (entry.path == path) { |
| return entry; |
| } |
| } |
| return {}; |
| } |
| |
| bool HasDirectory(const std::string& path_name) { |
| PurePath path{path_name}; |
| for (auto&& entry : entries) { |
| if (entry.path == path) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| std::vector<PathEntry> OpenDirectory(const std::string& path_name) { |
| PurePath path{path_name}; |
| return OpenDirectory(path); |
| } |
| |
| std::vector<PathEntry> OpenDirectory(const PurePath& path) { |
| std::vector<PathEntry> children; |
| |
| PET_LOG_DEBUG << "OpenDirectory(" << path << ")"; |
| |
| for (auto&& entry : entries) { |
| // Only find the immediate children, don't find any other offspring. |
| PurePath parent = entry.path.Parent(); |
| if (parent == path) { |
| if (parent == entry.path) { |
| // Ignore recursive parents, e.g. '/' |
| PET_LOG_DEBUG << "OpenDirectory - Ignore recursive parent " << parent; |
| continue; |
| } |
| |
| children.push_back(entry); |
| |
| DCHECK(!children.back().path.IsBorrowed()); |
| |
| PET_LOG_DEBUG << "OpenDirectory - Child added = " << entry; |
| } |
| } |
| |
| |
| return children; |
| } |
| |
| size_t size() const { |
| return entries.size(); |
| } |
| }; |
| |
| |
| static std::vector<std::string> ParseLines(const char* what) { |
| std::vector<std::string> do_split = android::base::Split(what, "\n"); |
| |
| std::vector<std::string> output; |
| for (std::string& s : do_split) { |
| if (s.size() != 0) { |
| output.push_back(s); |
| } |
| } |
| |
| return output; |
| } |
| |
| static std::vector<Inode> ParseInodes(std::vector<std::string> inode_strings) { |
| std::vector<Inode> results; |
| |
| for (std::string& s : inode_strings) { |
| Inode inode; |
| |
| std::string error_msg; |
| bool inode_parse_succeeded = Inode::Parse(s, /*out*/&inode, /*out*/&error_msg); |
| CHECK(inode_parse_succeeded) << s << ", error: " << error_msg; |
| |
| results.push_back(inode); |
| } |
| |
| return results; |
| } |
| |
| |
| |
| static PathEntryTree CreateFakePathEntries() { |
| #if 1 |
| // adb shell 'find /data/data/com.google.android.googlequicksearchbox/ | xargs stat -c "%d@%i"' |
| static const char* kInodeValues = R"1N0D3( |
| 66323@1117133 |
| 66323@1127133 |
| 66323@1137133 |
| 66323@1327133 |
| 66323@1336383 |
| 66323@1376559 |
| 66323@1376448 |
| 66323@1376446 |
| 66323@1376596 |
| 66323@1376638 |
| 66323@1376438 |
| 66323@1376444 |
| 66323@1376563 |
| 66323@1376434 |
| 66323@1376439 |
| 66323@1336384 |
| 66323@1335704 |
| 66323@1336031 |
| 66323@1335751 |
| 66323@1337692 |
| 66323@1336090 |
| 66323@1336385 |
| 66323@1376543 |
| 66323@1376449 |
| 66323@1376544 |
| 66323@1376547 |
| 66323@1376436 |
| 66323@1336619 |
| 66323@1336070 |
| 66323@1336681 |
| 66323@1336064 |
| 66323@1336088 |
| 66323@1336470 |
| 66323@1335570 |
| 66323@1335668 |
| 66323@1336471 |
| 66323@1335514 |
| 66323@1376475 |
| 66323@1376462 |
| 66323@1376435 |
| 66323@1376476 |
| 66323@1376632 |
| 66323@1351934 |
| 66323@1351948 |
| 66323@1351949 |
| 66323@1351950 |
| 66323@1351939 |
| 66323@1376479 |
| 66323@1376437 |
| 66323@1376450 |
| 66323@1376480 |
| 66323@1376442 |
| 66323@1376451 |
| 66323@1376454 |
| 66323@1376457 |
| 66323@1376452 |
| 66323@1376546 |
| 66323@1335629 |
| 66323@1343800 |
| 66323@1343801 |
| 66323@1336890 |
| 66323@1336616 |
| 66323@1336921 |
| 66323@1327135 |
| 66323@1335862 |
| 66323@1336547 |
| 66323@1351681 |
| 66323@1351684 |
| 66323@1351744 |
| 66323@1351705 |
| 66323@1351699 |
| 66323@1351711 |
| 66323@1351748 |
| 66323@1351734 |
| 66323@1351682 |
| 66323@1351683 |
| 66323@1351719 |
| 66323@1351739 |
| 66323@1351689 |
| 66323@1351724 |
| 66323@1351690 |
| 66323@1351745 |
| 66323@1351686 |
| 66323@1351691 |
| 66323@1351741 |
| 66323@1351687 |
| 66323@1351747 |
| 66323@1351736 |
| 66323@1351698 |
| 66323@1351697 |
| 66323@1351730 |
| 66323@1351712 |
| 66323@1351703 |
| 66323@1351721 |
| 66323@1351701 |
| 66323@1351717 |
| 66323@1351716 |
| 66323@1351695 |
| 66323@1351720 |
| 66323@1351688 |
| 66323@1351685 |
| 66323@1351727 |
| 66323@1351738 |
| 66323@1351729 |
| 66323@1351704 |
| 66323@1351743 |
| 66323@1351723 |
| 66323@1351700 |
| 66323@1351713 |
| 66323@1351707 |
| 66323@1351709 |
| 66323@1351731 |
| 66323@1351732 |
| 66323@1351693 |
| 66323@1351726 |
| 66323@1351708 |
| 66323@1351714 |
| 66323@1351728 |
| 66323@1351694 |
| 66323@1351706 |
| 66323@1351722 |
| 66323@1351696 |
| 66323@1351715 |
| 66323@1351740 |
| 66323@1351725 |
| 66323@1351702 |
| 66323@1351710 |
| 66323@1351737 |
| 66323@1351742 |
| 66323@1351746 |
| 66323@1351735 |
| 66323@1351733 |
| 66323@1351692 |
| 66323@1351718 |
| 66323@1336864 |
| 66323@1335446 |
| 66323@1337584 |
| 66323@1335740 |
| 66323@1335854 |
| 66323@1336644 |
| 66323@1376553 |
| 66323@1376554 |
| 66323@1376469 |
| 66323@1376637 |
| 66323@1376555 |
| 66323@1376556 |
| 66323@1376570 |
| 66323@1376565 |
| 66323@1376557 |
| 66323@1376558 |
| 66323@1376432 |
| 66323@1376567 |
| 66323@1376440 |
| 66323@1343805 |
| 66323@1336646 |
| 66323@1336947 |
| 66323@1336393 |
| 66323@1336394 |
| 66323@1335920 |
| 66323@1336041 |
| 66323@1335650 |
| 66323@1336667 |
| 66323@1336665 |
| 66323@1335760 |
| 66323@1343802 |
| 66323@1343803 |
| 66323@1344013 |
| 66323@1344134 |
| 66323@1376276 |
| 66323@1336598 |
| 66323@1336634 |
| 66323@1336652 |
| 66323@1336656 |
| 66323@1336446 |
| 66323@1336863 |
| 66323@1337682 |
| 66323@1336866 |
| 66323@1336867 |
| 66323@1335678 |
| 66323@1336865 |
| 66323@1327631 |
| 66323@1327664 |
| 66323@1327660 |
| 66323@1327134 |
| 66323@1336825 |
| 66323@1337969 |
| 66323@1335938 |
| 66323@1337849 |
| 66323@1337839 |
| 66323@1337866 |
| 66323@1337122 |
| 66323@1337756 |
| 66323@1336966 |
| 66323@1337982 |
| 66323@1337097 |
| 66323@1336683 |
| 66323@1337824 |
| 66323@1337460 |
| 66323@1337775 |
| 66323@1337810 |
| 66323@1337847 |
| 66323@1335853 |
| 66323@1337594 |
| 66323@1337808 |
| 66323@1337817 |
| 66323@1337092 |
| 66323@1337699 |
| 66323@1337593 |
| 66323@1337089 |
| 66323@1335959 |
| 66323@1337788 |
| 66323@1337181 |
| 66323@1337610 |
| 66323@1336980 |
| 66323@1337972 |
| 66323@1337554 |
| 66323@1337661 |
| 66323@1337770 |
| 66323@1335951 |
| 66323@1337984 |
| 66323@1336061 |
| 66323@1337497 |
| 66323@1337835 |
| 66323@1337805 |
| 66323@1336557 |
| 66323@1336780 |
| 66323@1337816 |
| 66323@1337732 |
| 66323@1337983 |
| 66323@1337954 |
| 66323@1337713 |
| 66323@1337687 |
| 66323@1337597 |
| 66323@1337466 |
| 66323@1337814 |
| 66323@1337603 |
| 66323@1337031 |
| 66323@1336784 |
| 66323@1337534 |
| 66323@1337727 |
| 66323@1337693 |
| 66323@1337791 |
| 66323@1337567 |
| 66323@1337748 |
| 66323@1337777 |
| 66323@1336194 |
| 66323@1337843 |
| 66323@1336971 |
| 66323@1337974 |
| 66323@1336785 |
| 66323@1337871 |
| 66323@1337815 |
| 66323@1337709 |
| 66323@1337551 |
| 66323@1337088 |
| 66323@1337776 |
| 66323@1337672 |
| 66323@1335979 |
| 66323@1337823 |
| 66323@1336028 |
| 66323@1337526 |
| 66323@1337971 |
| 66323@1337853 |
| 66323@1337596 |
| 66323@1337901 |
| 66323@1337572 |
| 66323@1335921 |
| 66323@1336954 |
| 66323@1337820 |
| 66323@1335492 |
| 66323@1337809 |
| 66323@1337696 |
| 66323@1335636 |
| 66323@1337608 |
| 66323@1335746 |
| 66323@1337731 |
| 66323@1337967 |
| 66323@1337769 |
| 66323@1337751 |
| 66323@1337973 |
| 66323@1337697 |
| 66323@1335939 |
| 66323@1336001 |
| 66323@1337598 |
| 66323@1336713 |
| 66323@1337702 |
| 66323@1337844 |
| 66323@1337862 |
| 66323@1336978 |
| 66323@1337975 |
| 66323@1336798 |
| 66323@1337858 |
| 66323@1337605 |
| 66323@1337510 |
| 66323@1337914 |
| 66323@1376548 |
| 66323@1376549 |
| 66323@1376550 |
| 66323@1376564 |
| 66323@1376571 |
| 66323@1376683 |
| 66323@1376681 |
| 66323@1376652 |
| 66323@1376682 |
| 66323@1376684 |
| 66323@1376649 |
| 66323@1376568 |
| 66323@1376569 |
| 66323@1376576 |
| 66323@1376578 |
| 66323@1376579 |
| 66323@1376581 |
| 66323@1376582 |
| 66323@1376577 |
| 66323@1376580 |
| 66323@1376597 |
| 66323@1376598 |
| 66323@1376602 |
| 66323@1376599 |
| 66323@1376600 |
| 66323@1376601 |
| 66323@1376583 |
| 66323@1376551 |
| 66323@1376552 |
| 66323@1376560 |
| 66323@1376561 |
| 66323@1376562 |
| 66323@1376591 |
| 66323@1376497 |
| 66323@1376482 |
| 66323@1376536 |
| 66323@1376533 |
| 66323@1376532 |
| 66323@1336380 |
| 66323@1336425 |
| 66323@1337738 |
| 66323@1337978 |
| 66323@1337796 |
| 66323@1337819 |
| 66323@1337781 |
| 66323@1337857 |
| 66323@1337963 |
| 66323@1335777 |
| 66323@1337569 |
| 66323@1337818 |
| 66323@1337758 |
| 66323@1337742 |
| 66323@1336950 |
| 66323@1337730 |
| 66323@1337021 |
| 66323@1335774 |
| 66323@1337813 |
| 66323@1337755 |
| 66323@1337964 |
| 66323@1337860 |
| 66323@1338005 |
| 66323@1336592 |
| 66323@1336428 |
| 66323@1335779 |
| 66323@1337976 |
| 66323@1337461 |
| 66323@1337789 |
| 66323@1337745 |
| 66323@1337602 |
| 66323@1337698 |
| 66323@1336813 |
| 66323@1337606 |
| 66323@1337896 |
| 66323@1337712 |
| 66323@1337970 |
| 66323@1337981 |
| 66323@1335435 |
| 66323@1337587 |
| 66323@1337821 |
| 66323@1337716 |
| 66323@1337754 |
| 66323@1337786 |
| 66323@1337778 |
| 66323@1336032 |
| 66323@1338029 |
| 66323@1337550 |
| 66323@1337783 |
| 66323@1337609 |
| 66323@1337107 |
| 66323@1337841 |
| 66323@1337557 |
| 66323@1337700 |
| 66323@1337604 |
| 66323@1337920 |
| 66323@1337469 |
| 66323@1337811 |
| 66323@1337715 |
| 66323@1337980 |
| 66323@1336949 |
| 66323@1337812 |
| 66323@1337806 |
| 66323@1337779 |
| 66323@1337600 |
| 66323@1336080 |
| 66323@1337601 |
| 66323@1336920 |
| 66323@1337703 |
| 66323@1337033 |
| 66323@1336824 |
| 66323@1337104 |
| 66323@1337854 |
| 66323@1336078 |
| 66323@1336970 |
| 66323@1337917 |
| 66323@1337671 |
| 66323@1337926 |
| 66323@1336802 |
| 66323@1337797 |
| 66323@1338031 |
| 66323@1337095 |
| 66323@1337676 |
| 66323@1337708 |
| 66323@1335905 |
| 66323@1336124 |
| 66323@1337859 |
| 66323@1337784 |
| 66323@1337795 |
| 66323@1337724 |
| 66323@1337822 |
| 66323@1336426 |
| 66323@1337852 |
| 66323@1337856 |
| 66323@1337855 |
| 66323@1337780 |
| 66323@1337607 |
| 66323@1336956 |
| 66323@1337038 |
| 66323@1336513 |
| 66323@1336918 |
| 66323@1336739 |
| 66323@1337924 |
| 66323@1337530 |
| 66323@1337757 |
| 66323@1337850 |
| 66323@1337701 |
| 66323@1336613 |
| 66323@1337737 |
| 66323@1336817 |
| 66323@1337977 |
| 66323@1336314 |
| 66323@1337465 |
| 66323@1336991 |
| 66323@1337279 |
| 66323@1337922 |
| 66323@1337710 |
| 66323@1337599 |
| 66323@1337861 |
| 66323@1336388 |
| 66323@1336389 |
| 66323@1336084 |
| 66323@1335615 |
| 66323@1336375 |
| 66323@1335759 |
| 66323@1336036 |
| 66323@1336433 |
| 66323@1335649 |
| 66323@1337744 |
| 66323@1336008 |
| 66323@1336004 |
| 66323@1336026 |
| 66323@1335834 |
| 66323@1336376 |
| 66323@1336377 |
| 66323@1336505 |
| 66323@1336378 |
| 66323@1335382 |
| 66323@1337015 |
| 66323@1336108 |
| 66323@1337103 |
| 66323@1335413 |
| 66323@1335935 |
| 66323@1335429 |
| 66323@1337733 |
| 66323@1336382 |
| 66323@1336381 |
| 66323@1336633 |
| 66323@1337522 |
| 66323@1336694 |
| 66323@1335428 |
| )1N0D3"; |
| |
| const char* kPathNames = R"F1L3N4M3( |
| / |
| /data/ |
| /data/data/ |
| /data/data/com.google.android.googlequicksearchbox/ |
| /data/data/com.google.android.googlequicksearchbox/app_si |
| /data/data/com.google.android.googlequicksearchbox/app_si/searchbox_stats_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/searchbox_stats_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/searchbox_stats_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/searchbox_stats_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/searchbox_stats_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/shortcuts_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/shortcuts_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/shortcuts_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/shortcuts_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/shortcuts_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store/now_content_store_blob_9060309284749123123.bin |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store/now_content_store_blob_9184734810098631032.bin |
| /data/data/com.google.android.googlequicksearchbox/app_si/now_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/proactive_key_value_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/proactive_key_value_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/proactive_key_value_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/proactive_key_value_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/proactive_key_value_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/srp_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/srp_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/srp_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/srp_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/srp_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/state_dump_event_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/state_dump_event_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/state_dump_event_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/state_dump_event_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/state_dump_event_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/homescreen_shortcut_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/homescreen_shortcut_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/homescreen_shortcut_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/homescreen_shortcut_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/homescreen_shortcut_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/search_widget_overlay_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/search_widget_overlay_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/search_widget_overlay_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/search_widget_overlay_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/search_widget_overlay_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/opa_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/opa_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/opa_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_si/opa_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/opa_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/accl_conv_client_content_store |
| /data/data/com.google.android.googlequicksearchbox/app_si/accl_conv_client_content_store/content_store.db-shm |
| /data/data/com.google.android.googlequicksearchbox/app_si/accl_conv_client_content_store/content_store.db |
| /data/data/com.google.android.googlequicksearchbox/app_si/accl_conv_client_content_store/content_store.db-wal |
| /data/data/com.google.android.googlequicksearchbox/app_si/accl_conv_client_content_store/content_store.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/app_session |
| /data/data/com.google.android.googlequicksearchbox/app_monet_init_data |
| /data/data/com.google.android.googlequicksearchbox/app_monet_init_data/search.TYPE_SEARCHNOW.binarypb |
| /data/data/com.google.android.googlequicksearchbox/no_backup |
| /data/data/com.google.android.googlequicksearchbox/no_backup/com.google.InstanceId.properties |
| /data/data/com.google.android.googlequicksearchbox/no_backup/com.google.android.gms.appid-no-backup |
| /data/data/com.google.android.googlequicksearchbox/code_cache |
| /data/data/com.google.android.googlequicksearchbox/app_sid |
| /data/data/com.google.android.googlequicksearchbox/app_g3_models |
| /data/data/com.google.android.googlequicksearchbox/app_g3_models/en-US |
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| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/29f6d5d8b27eb0c5_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/e99ae68f3e468751_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/502dafda143b5a74_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/d1783d0a170fdb8e_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/ac27a389f7bf6b67_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/40300177b5c0050d_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/4a8de756f1428237_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/e029cf1b0932611f_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/c69ff5c7e450ab22_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/bdfd0aa008d40005_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/40dd89dd968602d3_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/d04eb6456f31d2f7_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/ff4e7b79b6327627_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/b136f3771ffb9958_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/207bb56723cc5c3a_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/95035b9448e65cf2_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/73afbe7f6b7a496c_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/84b41c998e542199_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/d68d127f97a27059_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/037a0f2e4460355f_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/da584b3cb202e078_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/2d6c5245e29028b2_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/ca9b25d228896196_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/0e2708cf50936235_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/ab39283d30a39dd1_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/f721910d7c288b54_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/e1cd683779c2ea08_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/d1a8c9a323296d5b_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/4821c08320e603ae_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/01a2afcf422b3b4f_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/d41f0a4d475402fd_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/fcacc70d27c27f8b_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/f76d072b8c546a89_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/aff6b5b6e20cc2fa_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/8037b4d4c7774071_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/index |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/1e6d9e3ecd002bc9_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/3cfe648fbdd026a7_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/ab5d3ea4f0904068_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/9a785469b604c8af_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/472d78242cce2d22_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/503a7645e7f2d973_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/593a42d396c32634_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/b6ee82fb12843073_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/3561efa2281c73ed_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/318755c427839e86_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/3ef890a79ddb7e0c_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/d9772c6ee701ad39_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/5b3eff799688e021_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/30bb71565ae0cc27_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/54afe61c6fcf0e3f_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/8c9d078e6dbc501d_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/32a4f6fc17306385_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/0111bfd7286ca658_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/55ccaf33bd76fb46_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/65b80b5a552aaeaf_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/30fffcc41f7846bf_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/5377846224f95fc9_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/f9c93b74a177706b_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/94239554b50b59b5_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/14ced047ba93cdd3_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/2ceea49fe8c9e2fe_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/disk_cache/3ec7cdbc127eae35_0 |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/version |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/prefs |
| /data/data/com.google.android.googlequicksearchbox/cache/cronet-async/prefs/local_prefs.json |
| /data/data/com.google.android.googlequicksearchbox/cache/si |
| /data/data/com.google.android.googlequicksearchbox/databases |
| /data/data/com.google.android.googlequicksearchbox/databases/icing-mdh.db-wal |
| /data/data/com.google.android.googlequicksearchbox/databases/google_app_measurement.db-shm |
| /data/data/com.google.android.googlequicksearchbox/databases/icing-mdh.db-shm |
| /data/data/com.google.android.googlequicksearchbox/databases/google_app_measurement_local.db |
| /data/data/com.google.android.googlequicksearchbox/databases/google_app_measurement_local.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/databases/google_app_measurement.db-wal |
| /data/data/com.google.android.googlequicksearchbox/databases/google_app_measurement.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/databases/google_app_measurement.db |
| /data/data/com.google.android.googlequicksearchbox/databases/icing-mdh.db-wipecheck |
| /data/data/com.google.android.googlequicksearchbox/databases/launcher.db |
| /data/data/com.google.android.googlequicksearchbox/databases/launcher.db-wal |
| /data/data/com.google.android.googlequicksearchbox/databases/icing-mdh.db |
| /data/data/com.google.android.googlequicksearchbox/databases/launcher.db-shm |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/AccountSwitcherDrawerPresenter.Prefs.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/com.google.android.gms.appid.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/consecutive_crash_stats.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/uncaught_exception_handler_stats.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/VoiceInteractionService.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/interactor_process_uncaught_exception_handler_stats.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/WebViewChromiumPrefs.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/com.android.launcher3.managedusers.prefs.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/com.android.launcher3.prefs.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/GEL.GSAPrefs.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/com.google.android.gms.measurement.prefs.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/ThrottlingLogger.xml |
| /data/data/com.google.android.googlequicksearchbox/shared_prefs/default_process_uncaught_exception_handler_stats.xml |
| )F1L3N4M3"; |
| |
| #else |
| |
| static const char* kInodeValues = R"1N0D3( |
| 66323@1117133 |
| 66323@1127134 |
| 66323@1137135 |
| 66323@1137136 |
| 66323@1137137 |
| )1N0D3"; |
| |
| const char* kPathNames = R"F1L3N4M3( |
| / |
| /data/ |
| /data/data/ |
| /data/data/file |
| /data/data/last_file |
| )F1L3N4M3"; |
| |
| #endif |
| |
| |
| std::vector<std::string> inode_values = ParseLines(kInodeValues); |
| std::vector<std::string> path_names = ParseLines(kPathNames); |
| |
| std::vector<Inode> inodes = ParseInodes(inode_values); |
| |
| return PathEntryTree{ PathEntry::Zip(inodes, path_names) }; |
| } |
| |
| class FakeSystemCall : public SystemCall { |
| public: |
| // stat(2) |
| virtual int stat(const char *pathname, struct stat *statbuf) override { |
| if (pathname == nullptr || statbuf == nullptr) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| std::optional<PathEntry> maybe_path_entry = path_entries_.GetEntryFor(pathname); |
| |
| if (!maybe_path_entry) { |
| errno = ENOENT; |
| return -1; |
| } |
| |
| memset(statbuf, 0, sizeof(*statbuf)); |
| |
| Inode inode = maybe_path_entry->inode; |
| statbuf->st_dev = iorap::inode2filename::makedev(static_cast<int>(inode.device_major), |
| static_cast<int>(inode.device_minor)); |
| statbuf->st_ino = static_cast<iorap::inode2filename::ino_t>(inode.inode); |
| |
| return 0; |
| } |
| |
| static constexpr bool debug{false}; |
| |
| #define FS_LOG_DEBUG if (debug) LOG(DEBUG) |
| |
| // opendir(3) |
| virtual DIR *opendir(const char *name) override { |
| |
| FS_LOG_DEBUG << "opendir(" << name << ")"; |
| |
| std::string name_str{name}; |
| if (path_entries_.HasDirectory(name_str)) { |
| CHECK(!state_.open_); |
| |
| std::vector<PathEntry> children = path_entries_.OpenDirectory(name_str); |
| |
| state_ = State::Open(name_str, std::move(children)); |
| |
| FS_LOG_DEBUG << "opendir - success, state address: " << &state_; |
| |
| return get_state_as_dir(); |
| } |
| |
| FS_LOG_DEBUG << "opendir - no matching entry, scanned " << path_entries_.size(); |
| |
| // TODO. errno. |
| errno = EINVAL; |
| return nullptr; |
| } |
| |
| // readdir(3) |
| virtual struct dirent *readdir(DIR *dirp) override { |
| DCHECK(dirp != nullptr); |
| // We could also errno=EBADF but this seems more apropro to test. |
| |
| State* state = dir_to_state(dirp); |
| (void) state; |
| DCHECK(state != nullptr); |
| |
| std::optional<PathEntry> path_entry_opt = state->ReadDir(); |
| |
| if (!path_entry_opt) { |
| FS_LOG_DEBUG << "readdir(" << &state << ") - no children left "; |
| |
| // No more children left. We have exhausted them all. |
| return nullptr; |
| } |
| |
| PathEntry path_entry = *path_entry_opt; |
| |
| FS_LOG_DEBUG << "readdir(" << &state << ") - called for " << path_entry.path; |
| |
| // TODO. impelment this. |
| static struct dirent dir_ent{}; |
| |
| // Clear it again. |
| memset(&dir_ent, 0, sizeof(dir_ent)); |
| |
| dir_ent.d_ino = path_entry.inode.inode; |
| |
| FS_LOG_DEBUG << "readdir(" << &state << ") - children check" << path_entry.path; |
| |
| // Is this a file (no children) or a directory (some children)? |
| // |
| // In reality some directories might be empty too, but lets not worry about it yet. |
| std::vector<PathEntry> children = path_entries_.OpenDirectory(path_entry.path); |
| |
| if (children.empty()) { |
| dir_ent.d_type = DT_REG; |
| } else { |
| dir_ent.d_type = DT_DIR; |
| } |
| |
| // the d_name must be just the final name component of a path. |
| // Do not include the full path. |
| |
| std::string_view name_view = path_entry.path.Name(); |
| DCHECK_LT(name_view.size(), sizeof(dir_ent.d_name)); |
| |
| std::copy(name_view.begin(), |
| name_view.end(), |
| &dir_ent.d_name[0]); |
| dir_ent.d_name[name_view.size()] = '\0'; |
| |
| FS_LOG_DEBUG << "readdir(" << &state << ") - return , d_name=\"" << dir_ent.d_name << "\"" |
| << ", d_type=" << (dir_ent.d_type == DT_REG ? "DT_REG" : "DT_DIR"); |
| |
| return &dir_ent; |
| } |
| |
| // closedir(3) |
| virtual int closedir(DIR *dirp) override { |
| CHECK(dirp != nullptr); |
| State* state = dir_to_state(dirp); |
| state->Close(); |
| |
| return 0; |
| } |
| |
| FakeSystemCall() { |
| path_entries_ = CreateFakePathEntries(); |
| } |
| |
| private: |
| struct State { |
| std::string name_; |
| bool open_{false}; |
| std::vector<PathEntry> children; |
| |
| static State Open(std::string name, std::vector<PathEntry> children) { |
| return State{name, /*open*/true, std::move(children)}; |
| } |
| |
| std::optional<PathEntry> ReadDir() { |
| if (children.empty()) { |
| return {}; |
| } |
| |
| PathEntry last = children.back(); |
| children.pop_back(); |
| |
| return { std::move(last) }; |
| } |
| |
| void Close() { |
| CHECK(open_); |
| open_ = false; |
| } |
| }; |
| |
| DIR* get_state_as_dir() { |
| return reinterpret_cast<DIR*>(reinterpret_cast<void*>(&state_)); |
| } |
| |
| State* dir_to_state(DIR* dirp) { |
| return reinterpret_cast<State*>(reinterpret_cast<void*>(dirp)); |
| } |
| |
| State state_; |
| |
| PathEntryTree path_entries_; |
| }; |
| |
| class MockSystemCall : public SystemCall { |
| public: |
| INJECT(MockSystemCall()) { |
| // Delegate calls to a fake (see the googlemock CookBook for more details). |
| // https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#delegating-calls-to-a-fake |
| DelegateToFake(); |
| |
| WorkAroundForNiceMock(); |
| } |
| |
| ~MockSystemCall() { |
| } |
| |
| MOCK_METHOD2(stat, int(const char *, struct stat *)); |
| MOCK_METHOD1(opendir, DIR*(const char *)); |
| MOCK_METHOD1(readdir, struct dirent*(DIR*)); |
| MOCK_METHOD1(closedir, int(DIR*)); |
| |
| // Delegates the default actions of the methods to a FakeSystemCall object. |
| // This must be called *before* the custom ON_CALL() statements. |
| void DelegateToFake() { |
| ON_CALL(*this, stat(_,_)) |
| .WillByDefault(Invoke(&fake_, &FakeSystemCall::stat)); |
| ON_CALL(*this, opendir(_)) |
| .WillByDefault(Invoke(&fake_, &FakeSystemCall::opendir)); |
| ON_CALL(*this, readdir(_)) |
| .WillByDefault(Invoke(&fake_, &FakeSystemCall::readdir)); |
| ON_CALL(*this, closedir(_)) |
| .WillByDefault(Invoke(&fake_, &FakeSystemCall::closedir)); |
| } |
| |
| void WorkAroundForNiceMock(); |
| |
| private: |
| FakeSystemCall fake_; |
| }; |
| |
| // Don't print any warnings when methods are executed without EXPECT_CALL. |
| //using NiceMockSystemCall = NiceMock<MockSystemCall>; |
| |
| // Can't use NiceMock<MockSystemCall> here, fails with this compilation error |
| // |
| // external/google-fruit/include/fruit/impl/injection_errors.h:107:3: error: static_assert failed due to requirement 'AlwaysFalse<NiceMock<MockSystemCall> >::value' "C::Inject is a signature, but does not return a C. Maybe the class C has no Inject typedef and inherited the base class' one? If that's not the case, make sure it returns just C, not C* or other types." |
| using NiceMockSystemCall = MockSystemCall; |
| |
| void MockSystemCall::WorkAroundForNiceMock() { |
| // Should be able to use NiceMock instead, but fruit is having problems compiling. |
| EXPECT_CALL(*this, stat).Times(AtLeast(0)); |
| EXPECT_CALL(*this, opendir).Times(AtLeast(0)); |
| EXPECT_CALL(*this, readdir).Times(AtLeast(0)); |
| EXPECT_CALL(*this, closedir).Times(AtLeast(0)); |
| } |
| |
| fruit::Component<SearchDirectories, NiceMockSystemCall> getTestComponents() { |
| return fruit::createComponent() |
| .bind<SystemCall, NiceMockSystemCall>(); |
| } |
| |
| // TODO: there might be a helper or similar to do this instead. |
| template <typename T> |
| static std::vector<T> subscribe_drain(std::pair<rxcpp::observable<T>, |
| std::unique_ptr<SearchDirectories::RxAnyConnectable>> pair) { |
| rxcpp::observable<T>& obs = pair.first; |
| std::unique_ptr<SearchDirectories::RxAnyConnectable>& connectable_ptr = pair.second; |
| |
| std::vector<T> vec; |
| |
| obs.subscribe([&vec](auto&& x) { |
| vec.push_back(IORAP_FORWARD_LAMBDA(x)); |
| }); |
| |
| CHECK(connectable_ptr != nullptr); |
| |
| // Execute above lambda, blocking until all values are drained. |
| connectable_ptr->connect(); |
| |
| return vec; |
| } |
| |
| struct SearchDirectoriesParam { |
| std::vector<std::string> root_directories; |
| std::vector<Inode> search_inodes; |
| std::vector<InodeResult> expected_results; |
| }; |
| |
| template <typename It> |
| std::ostream& iterator_to_stream(std::ostream& os, It begin, It end) { |
| os << "{"; |
| while (begin != end) { |
| os << *begin; |
| os << ","; |
| |
| ++begin; |
| } |
| os << "}"; |
| |
| return os; |
| } |
| |
| template <typename T> |
| std::ostream& container_to_stream(std::ostream& os, T&& c) { |
| return iterator_to_stream(os, c.begin(), c.end()); |
| } |
| |
| std::ostream& operator<<(std::ostream& os, const SearchDirectoriesParam& p) { |
| os << "{"; |
| os << "root_directories:"; |
| container_to_stream(os, p.root_directories); |
| os << ", "; |
| os << "search_inodes:"; |
| container_to_stream(os, p.search_inodes) << ", "; |
| os << "expected_results:"; |
| container_to_stream(os, p.expected_results); |
| os << "}"; |
| return os; |
| } |
| |
| struct SearchDirectoriesTest : |
| public ::testing::TestWithParam<SearchDirectoriesParam> { |
| |
| static void SetUpTestCase() { |
| ConfigureLogging(); |
| } |
| |
| virtual void SetUp() override { |
| auto pair = |
| search.FindFilenamesFromInodesPair(GetParam().root_directories, |
| GetParam().search_inodes, |
| SearchMode::kInProcessDirect); |
| |
| actual = subscribe_drain(std::move(pair)); |
| expected = GetParam().expected_results; |
| } |
| |
| virtual void TearDown() override { |
| // TODO. |
| } |
| |
| protected: |
| fruit::Injector<SearchDirectories, NiceMockSystemCall> injector{getTestComponents}; |
| |
| SearchDirectories& search = injector.get<SearchDirectories&>(); |
| MockSystemCall& mock_syscall = injector.get<NiceMockSystemCall&>(); |
| |
| std::vector<InodeResult> actual; |
| std::vector<InodeResult> expected; |
| }; |
| |
| TEST_P(SearchDirectoriesTest, ElementsAreArrayMatcher) { |
| EXPECT_THAT(actual, ElementsAreArray(expected)); |
| } |
| |
| auto MakeEmptyInodes(std::vector<std::string> root_dirs) { |
| return SearchDirectoriesParam{root_dirs, /*inodes*/{}, /*actual*/{}}; |
| } |
| |
| // When are are 0 inodes to search for, the results will be empty. |
| INSTANTIATE_TEST_CASE_P(EmptyResults, |
| SearchDirectoriesTest, |
| ::testing::Values( |
| MakeEmptyInodes(/*root_dirs*/{}), |
| MakeEmptyInodes(/*root_dirs*/{""}), |
| MakeEmptyInodes(/*root_dirs*/{"/"}), |
| MakeEmptyInodes(/*root_dirs*/{"/abc"}) |
| )); |
| |
| |
| auto MakeAllFailInodes(std::vector<std::string> root_dirs, std::vector<Inode> inodes) { |
| std::vector<InodeResult> results; |
| for (const Inode& inode : inodes) { |
| results.push_back(InodeResult::makeFailure(inode, InodeResult::kCouldNotFindFilename)); |
| } |
| |
| return SearchDirectoriesParam{root_dirs, inodes, results}; |
| } |
| |
| // TODO: fixme |
| |
| #if 1 |
| |
| // When none of the inodes can be found, all results will be failing results. |
| INSTANTIATE_TEST_CASE_P(AllResultsAreErrorCouldNotFindFilename, |
| SearchDirectoriesTest, |
| ::testing::Values( |
| // TODO: why is empty root dir failing? |
| // MakeAllFailInodes(/*root_dirs*/{}, {Inode{1,2,3}}), |
| MakeAllFailInodes(/*root_dirs*/{"/"}, {Inode{1,2,3}}), |
| MakeAllFailInodes(/*root_dirs*/{"/data"}, {Inode{1,2,3}}), |
| MakeAllFailInodes(/*root_dirs*/{"/data/data"}, {Inode{1,2,3}}) |
| )); |
| |
| auto MakeAllPassInodes(std::vector<std::string> root_dirs, std::vector<std::string> inodes, std::vector<std::string> paths) { |
| std::vector<InodeResult> results; |
| |
| std::vector<Inode> inodes_actual; |
| |
| size_t i = 0; |
| for (const std::string& inode_str : inodes) { |
| Inode inode; |
| std::string error_msg; |
| |
| CHECK(Inode::Parse(inode_str, &inode, &error_msg)); |
| |
| inodes_actual.push_back(inode); |
| |
| std::string& path = paths[i]; |
| results.push_back(InodeResult::makeSuccess(inode, path)); |
| |
| ++i; |
| } |
| |
| return SearchDirectoriesParam{root_dirs, inodes_actual, results}; |
| } |
| |
| // Find all the inodes. Yay. |
| INSTANTIATE_TEST_CASE_P(AllResultsAreSuccess, |
| SearchDirectoriesTest, |
| ::testing::Values( |
| MakeAllPassInodes(/*root_dirs*/{"/"}, {"66323@1127133"}, {"//data"}) // TODO: why is it adding an extra '/' ? |
| )); |
| |
| #endif |