Move base to DEPS

base/version.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/version.h"
-
-#include <stddef.h>
-
-#include <algorithm>
-
-#include "base/logging.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-
-namespace base {
-
-namespace {
-
-// Parses the |numbers| vector representing the different numbers
-// inside the version string and constructs a vector of valid integers. It stops
-// when it reaches an invalid item (including the wildcard character). |parsed|
-// is the resulting integer vector. Function returns true if all numbers were
-// parsed successfully, false otherwise.
-bool ParseVersionNumbers(const std::string& version_str,
-                         std::vector<uint32_t>* parsed) {
-  std::vector<StringPiece> numbers =
-      SplitStringPiece(version_str, ".", KEEP_WHITESPACE, SPLIT_WANT_ALL);
-  if (numbers.empty())
-    return false;
-
-  for (auto it = numbers.begin(); it != numbers.end(); ++it) {
-    if (StartsWith(*it, "+", CompareCase::SENSITIVE))
-      return false;
-
-    // TODO(brettw) when we have a StringPiece version of StringToUint, delete
-    // this string conversion.
-    unsigned int num;
-    if (!StringToUint(*it, &num))
-      return false;
-
-    // This throws out leading zeros for the first item only.
-    if (it == numbers.begin() && UintToString(num) != *it)
-      return false;
-
-    // StringToUint returns unsigned int but Version fields are uint32_t.
-    static_assert(sizeof (uint32_t) == sizeof (unsigned int),
-        "uint32_t must be same as unsigned int");
-    parsed->push_back(num);
-  }
-  return true;
-}
-
-// Compares version components in |components1| with components in
-// |components2|. Returns -1, 0 or 1 if |components1| is less than, equal to,
-// or greater than |components2|, respectively.
-int CompareVersionComponents(const std::vector<uint32_t>& components1,
-                             const std::vector<uint32_t>& components2) {
-  const size_t count = std::min(components1.size(), components2.size());
-  for (size_t i = 0; i < count; ++i) {
-    if (components1[i] > components2[i])
-      return 1;
-    if (components1[i] < components2[i])
-      return -1;
-  }
-  if (components1.size() > components2.size()) {
-    for (size_t i = count; i < components1.size(); ++i) {
-      if (components1[i] > 0)
-        return 1;
-    }
-  } else if (components1.size() < components2.size()) {
-    for (size_t i = count; i < components2.size(); ++i) {
-      if (components2[i] > 0)
-        return -1;
-    }
-  }
-  return 0;
-}
-
-}  // namespace
-
-Version::Version() {
-}
-
-Version::~Version() {
-}
-
-Version::Version(const std::string& version_str) {
-  std::vector<uint32_t> parsed;
-  if (!ParseVersionNumbers(version_str, &parsed))
-    return;
-
-  components_.swap(parsed);
-}
-
-bool Version::IsValid() const {
-  return (!components_.empty());
-}
-
-// static
-bool Version::IsValidWildcardString(const std::string& wildcard_string) {
-  std::string version_string = wildcard_string;
-  if (EndsWith(version_string, ".*", CompareCase::SENSITIVE))
-    version_string.resize(version_string.size() - 2);
-
-  Version version(version_string);
-  return version.IsValid();
-}
-
-bool Version::IsOlderThan(const std::string& version_str) const {
-  Version proposed_ver(version_str);
-  if (!proposed_ver.IsValid())
-    return false;
-  return (CompareTo(proposed_ver) < 0);
-}
-
-int Version::CompareToWildcardString(const std::string& wildcard_string) const {
-  DCHECK(IsValid());
-  DCHECK(Version::IsValidWildcardString(wildcard_string));
-
-  // Default behavior if the string doesn't end with a wildcard.
-  if (!EndsWith(wildcard_string, ".*", CompareCase::SENSITIVE)) {
-    Version version(wildcard_string);
-    DCHECK(version.IsValid());
-    return CompareTo(version);
-  }
-
-  std::vector<uint32_t> parsed;
-  const bool success = ParseVersionNumbers(
-      wildcard_string.substr(0, wildcard_string.length() - 2), &parsed);
-  DCHECK(success);
-  const int comparison = CompareVersionComponents(components_, parsed);
-  // If the version is smaller than the wildcard version's |parsed| vector,
-  // then the wildcard has no effect (e.g. comparing 1.2.3 and 1.3.*) and the
-  // version is still smaller. Same logic for equality (e.g. comparing 1.2.2 to
-  // 1.2.2.* is 0 regardless of the wildcard). Under this logic,
-  // 1.2.0.0.0.0 compared to 1.2.* is 0.
-  if (comparison == -1 || comparison == 0)
-    return comparison;
-
-  // Catch the case where the digits of |parsed| are found in |components_|,
-  // which means that the two are equal since |parsed| has a trailing "*".
-  // (e.g. 1.2.3 vs. 1.2.* will return 0). All other cases return 1 since
-  // components is greater (e.g. 3.2.3 vs 1.*).
-  DCHECK_GT(parsed.size(), 0UL);
-  const size_t min_num_comp = std::min(components_.size(), parsed.size());
-  for (size_t i = 0; i < min_num_comp; ++i) {
-    if (components_[i] != parsed[i])
-      return 1;
-  }
-  return 0;
-}
-
-bool Version::Equals(const Version& that) const {
-  DCHECK(IsValid());
-  DCHECK(that.IsValid());
-  return (CompareTo(that) == 0);
-}
-
-int Version::CompareTo(const Version& other) const {
-  DCHECK(IsValid());
-  DCHECK(other.IsValid());
-  return CompareVersionComponents(components_, other.components_);
-}
-
-const std::string Version::GetString() const {
-  DCHECK(IsValid());
-  std::string version_str;
-  size_t count = components_.size();
-  for (size_t i = 0; i < count - 1; ++i) {
-    version_str.append(IntToString(components_[i]));
-    version_str.append(".");
-  }
-  version_str.append(IntToString(components_[count - 1]));
-  return version_str;
-}
-
-}  // namespace base