Revert 197960 "[chromeos] Remove dependencies of StatisticsProvi..."

trunk/src/chromeos/system/name_value_pairs_parser.cc

Index: trunk/src/chromeos/system/name_value_pairs_parser.cc
===================================================================
--- trunk/src/chromeos/system/name_value_pairs_parser.cc	(revision 197968)
+++ trunk/src/chromeos/system/name_value_pairs_parser.cc	(working copy)
@@ -1,149 +0,0 @@
-// 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 "chromeos/system/name_value_pairs_parser.h"
-
-#include "base/command_line.h"
-#include "base/file_util.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/process_util.h"
-#include "base/stl_util.h"
-#include "base/string_util.h"
-#include "base/strings/string_tokenizer.h"
-
-namespace chromeos {  // NOLINT
-namespace system {
-
-namespace {
-
-const char kQuoteChars[] = "\"";
-const char kTrimChars[] = "\" ";
-
-bool GetToolOutput(int argc, const char* argv[], std::string& output) {
-  DCHECK_GE(argc, 1);
-
-  if (!file_util::PathExists(base::FilePath(argv[0]))) {
-    LOG(WARNING) << "Tool for statistics not found: " << argv[0];
-    return false;
-  }
-
-  std::vector<std::string> args;
-  for (int argn = 0; argn < argc; ++argn)
-    args.push_back(argv[argn]);
-  if (!base::GetAppOutput(args, &output)) {
-    LOG(WARNING) << "Error executing " << argv[0];
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace
-
-NameValuePairsParser::NameValuePairsParser(NameValueMap* map)
-    : map_(map) {
-}
-
-void NameValuePairsParser::AddNameValuePair(const std::string& key,
-                                            const std::string& value) {
-  if (!ContainsKey(*map_, key)) {
-    (*map_)[key] = value;
-    VLOG(1) << "name: " << key << ", value: " << value;
-  } else {
-    LOG(WARNING) << "Key " << key << " already has value " << (*map_)[key]
-                 << ", ignoring new value: " << value;
-  }
-}
-
-bool NameValuePairsParser::ParseNameValuePairs(const std::string& in_string,
-                                               const std::string& eq,
-                                               const std::string& delim) {
-  return ParseNameValuePairsWithComments(in_string, eq, delim, "");
-}
-
-bool NameValuePairsParser::ParseNameValuePairsWithComments(
-    const std::string& in_string,
-    const std::string& eq,
-    const std::string& delim,
-    const std::string& comment_delim) {
-  bool all_valid = true;
-  // Set up the pair tokenizer.
-  base::StringTokenizer pair_toks(in_string, delim);
-  pair_toks.set_quote_chars(kQuoteChars);
-  // Process token pairs.
-  while (pair_toks.GetNext()) {
-    std::string pair(pair_toks.token());
-    // Anything before the first |eq| is the key, anything after is the value.
-    // |eq| must exist.
-    size_t eq_pos = pair.find(eq);
-    if (eq_pos != std::string::npos) {
-      // First |comment_delim| after |eq_pos| starts the comment.
-      // A value of |std::string::npos| means that the value spans to the end
-      // of |pair|.
-      size_t value_size = std::string::npos;
-      if (!comment_delim.empty()) {
-        size_t comment_pos = pair.find(comment_delim, eq_pos + 1);
-        if (comment_pos != std::string::npos)
-          value_size = comment_pos - eq_pos - 1;
-      }
-
-      std::string key;
-      std::string value;
-      TrimString(pair.substr(0, eq_pos), kTrimChars, &key);
-      TrimString(pair.substr(eq_pos + 1, value_size), kTrimChars, &value);
-
-      if (!key.empty()) {
-        AddNameValuePair(key, value);
-        continue;
-      }
-    }
-
-    LOG(WARNING) << "Invalid token pair: " << pair << ". Ignoring.";
-    all_valid = false;
-  }
-  return all_valid;
-}
-
-bool NameValuePairsParser::GetSingleValueFromTool(int argc,
-                                                  const char* argv[],
-                                                  const std::string& key) {
-  std::string output_string;
-  if (!GetToolOutput(argc, argv, output_string))
-    return false;
-
-  TrimWhitespaceASCII(output_string, TRIM_ALL, &output_string);
-  AddNameValuePair(key, output_string);
-  return true;
-}
-
-bool NameValuePairsParser::GetNameValuePairsFromFile(
-    const base::FilePath& file_path,
-    const std::string& eq,
-    const std::string& delim) {
-  std::string contents;
-  if (file_util::ReadFileToString(file_path, &contents)) {
-    return ParseNameValuePairs(contents, eq, delim);
-  } else {
-    LOG(WARNING) << "Unable to read statistics file: " << file_path.value();
-    return false;
-  }
-}
-
-bool NameValuePairsParser::ParseNameValuePairsFromTool(
-    int argc,
-    const char* argv[],
-    const std::string& eq,
-    const std::string& delim,
-    const std::string& comment_delim) {
-  std::string output_string;
-  if (!GetToolOutput(argc, argv, output_string))
-    return false;
-
-  return ParseNameValuePairsWithComments(
-      output_string, eq, delim, comment_delim);
-}
-
-}  // namespace system
-}  // namespace chromeos