1 files changed, 0 insertions, 278 deletions

diff --git a/updater/include/updater/rangeset.h b/updater/include/updater/rangeset.h
deleted file mode 100644
index b67c98724..000000000
--- a/updater/include/updater/rangeset.h
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Copyright (C) 2017 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.
- */
-
-#pragma once
-
-#include <stddef.h>
-
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-
-using Range = std::pair<size_t, size_t>;
-
-class RangeSet {
- public:
-  RangeSet() : blocks_(0) {}
-
-  explicit RangeSet(std::vector<Range>&& pairs) {
-    CHECK_NE(pairs.size(), static_cast<size_t>(0)) << "Invalid number of tokens";
-
-    // Sanity check the input.
-    size_t result = 0;
-    for (const auto& range : pairs) {
-      CHECK_LT(range.first, range.second)
-          << "Empty or negative range: " << range.first << ", " << range.second;
-      size_t sz = range.second - range.first;
-      CHECK_LE(result, SIZE_MAX - sz) << "RangeSet size overflow";
-      result += sz;
-    }
-
-    ranges_ = pairs;
-    blocks_ = result;
-  }
-
-  static RangeSet Parse(const std::string& range_text) {
-    std::vector<std::string> pieces = android::base::Split(range_text, ",");
-    CHECK_GE(pieces.size(), static_cast<size_t>(3)) << "Invalid range text: " << range_text;
-
-    size_t num;
-    CHECK(android::base::ParseUint(pieces[0], &num, static_cast<size_t>(INT_MAX)))
-        << "Failed to parse the number of tokens: " << range_text;
-
-    CHECK_NE(num, static_cast<size_t>(0)) << "Invalid number of tokens: " << range_text;
-    CHECK_EQ(num % 2, static_cast<size_t>(0)) << "Number of tokens must be even: " << range_text;
-    CHECK_EQ(num, pieces.size() - 1) << "Mismatching number of tokens: " << range_text;
-
-    std::vector<Range> pairs;
-    for (size_t i = 0; i < num; i += 2) {
-      size_t first;
-      CHECK(android::base::ParseUint(pieces[i + 1], &first, static_cast<size_t>(INT_MAX)));
-      size_t second;
-      CHECK(android::base::ParseUint(pieces[i + 2], &second, static_cast<size_t>(INT_MAX)));
-
-      pairs.emplace_back(first, second);
-    }
-
-    return RangeSet(std::move(pairs));
-  }
-
-  std::string ToString() const {
-    if (ranges_.empty()) {
-      return "";
-    }
-    std::string result = std::to_string(ranges_.size() * 2);
-    for (const auto& r : ranges_) {
-      result += android::base::StringPrintf(",%zu,%zu", r.first, r.second);
-    }
-
-    return result;
-  }
-
-  // Get the block number for the i-th (starting from 0) block in the RangeSet.
-  size_t GetBlockNumber(size_t idx) const {
-    CHECK_LT(idx, blocks_) << "Out of bound index " << idx << " (total blocks: " << blocks_ << ")";
-
-    for (const auto& range : ranges_) {
-      if (idx < range.second - range.first) {
-        return range.first + idx;
-      }
-      idx -= (range.second - range.first);
-    }
-
-    CHECK(false) << "Failed to find block number for index " << idx;
-    return 0;  // Unreachable, but to make compiler happy.
-  }
-
-  // RangeSet has half-closed half-open bounds. For example, "3,5" contains blocks 3 and 4. So "3,5"
-  // and "5,7" are not overlapped.
-  bool Overlaps(const RangeSet& other) const {
-    for (const auto& range : ranges_) {
-      size_t start = range.first;
-      size_t end = range.second;
-      for (const auto& other_range : other.ranges_) {
-        size_t other_start = other_range.first;
-        size_t other_end = other_range.second;
-        // [start, end) vs [other_start, other_end)
-        if (!(other_start >= end || start >= other_end)) {
-          return true;
-        }
-      }
-    }
-    return false;
-  }
-
-  // size() gives the number of Range's in this RangeSet.
-  size_t size() const {
-    return ranges_.size();
-  }
-
-  // blocks() gives the number of all blocks in this RangeSet.
-  size_t blocks() const {
-    return blocks_;
-  }
-
-  // We provide const iterators only.
-  std::vector<Range>::const_iterator cbegin() const {
-    return ranges_.cbegin();
-  }
-
-  std::vector<Range>::const_iterator cend() const {
-    return ranges_.cend();
-  }
-
-  // Need to provide begin()/end() since range-based loop expects begin()/end().
-  std::vector<Range>::const_iterator begin() const {
-    return ranges_.cbegin();
-  }
-
-  std::vector<Range>::const_iterator end() const {
-    return ranges_.cend();
-  }
-
-  // Reverse const iterators for MoveRange().
-  std::vector<Range>::const_reverse_iterator crbegin() const {
-    return ranges_.crbegin();
-  }
-
-  std::vector<Range>::const_reverse_iterator crend() const {
-    return ranges_.crend();
-  }
-
-  const Range& operator[](size_t i) const {
-    return ranges_[i];
-  }
-
-  bool operator==(const RangeSet& other) const {
-    // The orders of Range's matter. "4,1,5,8,10" != "4,8,10,1,5".
-    return (ranges_ == other.ranges_);
-  }
-
-  bool operator!=(const RangeSet& other) const {
-    return ranges_ != other.ranges_;
-  }
-
- protected:
-  // Actual limit for each value and the total number are both INT_MAX.
-  std::vector<Range> ranges_;
-  size_t blocks_;
-};
-
-static constexpr size_t kBlockSize = 4096;
-
-// The class is a sorted version of a RangeSet; and it's useful in imgdiff to split the input
-// files when we're handling large zip files. Specifically, we can treat the input file as a
-// continuous RangeSet (i.e. RangeSet("0-99") for a 100 blocks file); and break it down into
-// several smaller chunks based on the zip entries.
-
-// For example, [source: 0-99] can be split into
-// [split_src1: 10-29]; [split_src2: 40-49, 60-69]; [split_src3: 70-89]
-// Here "10-29" simply means block 10th to block 29th with respect to the original input file.
-// Also, note that the split sources should be mutual exclusive, but they don't need to cover
-// every block in the original source.
-class SortedRangeSet : public RangeSet {
- public:
-  SortedRangeSet() {}
-
-  // Ranges in the the set should be mutually exclusive; and they're sorted by the start block.
-  explicit SortedRangeSet(std::vector<Range>&& pairs) : RangeSet(std::move(pairs)) {
-    std::sort(ranges_.begin(), ranges_.end());
-  }
-
-  void Insert(const Range& to_insert) {
-    SortedRangeSet rs({ to_insert });
-    Insert(rs);
-  }
-
-  // Insert the input SortedRangeSet; keep the ranges sorted and merge the overlap ranges.
-  void Insert(const SortedRangeSet& rs) {
-    if (rs.size() == 0) {
-      return;
-    }
-    // Merge and sort the two RangeSets.
-    std::vector<Range> temp = std::move(ranges_);
-    std::copy(rs.begin(), rs.end(), std::back_inserter(temp));
-    std::sort(temp.begin(), temp.end());
-
-    Clear();
-    // Trim overlaps and insert the result back to ranges_.
-    Range to_insert = temp.front();
-    for (auto it = temp.cbegin() + 1; it != temp.cend(); it++) {
-      if (it->first <= to_insert.second) {
-        to_insert.second = std::max(to_insert.second, it->second);
-      } else {
-        ranges_.push_back(to_insert);
-        blocks_ += (to_insert.second - to_insert.first);
-        to_insert = *it;
-      }
-    }
-    ranges_.push_back(to_insert);
-    blocks_ += (to_insert.second - to_insert.first);
-  }
-
-  void Clear() {
-    blocks_ = 0;
-    ranges_.clear();
-  }
-
-  using RangeSet::Overlaps;
-  bool Overlaps(size_t start, size_t len) const {
-    RangeSet rs({ { start / kBlockSize, (start + len - 1) / kBlockSize + 1 } });
-    return Overlaps(rs);
-  }
-
-  // Compute the block range the file occupies, and insert that range.
-  void Insert(size_t start, size_t len) {
-    Range to_insert{ start / kBlockSize, (start + len - 1) / kBlockSize + 1 };
-    Insert(to_insert);
-  }
-
-  // Given an offset of the file, checks if the corresponding block (by considering the file as
-  // 0-based continuous block ranges) is covered by the SortedRangeSet. If so, returns the offset
-  // within this SortedRangeSet.
-  //
-  // For example, the 4106-th byte of a file is from block 1, assuming a block size of 4096-byte.
-  // The mapped offset within a SortedRangeSet("1-9 15-19") is 10.
-  //
-  // An offset of 65546 falls into the 16-th block in a file. Block 16 is contained as the 10-th
-  // item in SortedRangeSet("1-9 15-19"). So its data can be found at offset 40970 (i.e. 4096 * 10
-  // + 10) in a range represented by this SortedRangeSet.
-  size_t GetOffsetInRangeSet(size_t old_offset) const {
-    size_t old_block_start = old_offset / kBlockSize;
-    size_t new_block_start = 0;
-    for (const auto& range : ranges_) {
-      // Find the index of old_block_start.
-      if (old_block_start >= range.second) {
-        new_block_start += (range.second - range.first);
-      } else if (old_block_start >= range.first) {
-        new_block_start += (old_block_start - range.first);
-        return (new_block_start * kBlockSize + old_offset % kBlockSize);
-      } else {
-        CHECK(false) <<"block_start " << old_block_start << " is missing between two ranges: "
-                     << this->ToString();
-        return 0;
-      }
-    }
-    CHECK(false) <<"block_start " << old_block_start << " exceeds the limit of current RangeSet: "
-                 << this->ToString();
-    return 0;
-  }
-};
\ No newline at end of file