Move most importer code to chrome/utility/importer

chrome/browser/importer/bookmark_html_reader.cc

Index: chrome/browser/importer/bookmark_html_reader.cc
diff --git a/chrome/browser/importer/bookmark_html_reader.cc b/chrome/browser/importer/bookmark_html_reader.cc
deleted file mode 100644
index e618bad4975ddb5a867ff17a99438a7d4ae3d748..0000000000000000000000000000000000000000
--- a/chrome/browser/importer/bookmark_html_reader.cc
+++ /dev/null
@@ -1,432 +0,0 @@
-// Copyright 2013 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 "chrome/browser/importer/bookmark_html_reader.h"
-
-#include "base/callback.h"
-#include "base/file_util.h"
-#include "base/i18n/icu_string_conversions.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-#include "base/time/time.h"
-#include "chrome/browser/favicon/favicon_util.h"
-#include "chrome/common/importer/imported_bookmark_entry.h"
-#include "chrome/common/importer/imported_favicon_usage.h"
-#include "content/public/common/url_constants.h"
-#include "net/base/data_url.h"
-#include "net/base/escape.h"
-#include "url/gurl.h"
-
-namespace {
-
-// Fetches the given |attribute| value from the |attribute_list|. Returns true
-// if successful, and |value| will contain the value.
-bool GetAttribute(const std::string& attribute_list,
-                  const std::string& attribute,
-                  std::string* value) {
-  const char kQuote[] = "\"";
-
-  size_t begin = attribute_list.find(attribute + "=" + kQuote);
-  if (begin == std::string::npos)
-    return false;  // Can't find the attribute.
-
-  begin += attribute.size() + 2;
-  size_t end = begin + 1;
-
-  while (end < attribute_list.size()) {
-    if (attribute_list[end] == '"' &&
-        attribute_list[end - 1] != '\\') {
-      break;
-    }
-    end++;
-  }
-
-  if (end == attribute_list.size())
-    return false;  // The value is not quoted.
-
-  *value = attribute_list.substr(begin, end - begin);
-  return true;
-}
-
-// Given the URL of a page and a favicon data URL, adds an appropriate record
-// to the given favicon usage vector.
-void DataURLToFaviconUsage(
-    const GURL& link_url,
-    const GURL& favicon_data,
-    std::vector<ImportedFaviconUsage>* favicons) {
-  if (!link_url.is_valid() || !favicon_data.is_valid() ||
-      !favicon_data.SchemeIs(chrome::kDataScheme))
-    return;
-
-  // Parse the data URL.
-  std::string mime_type, char_set, data;
-  if (!net::DataURL::Parse(favicon_data, &mime_type, &char_set, &data) ||
-      data.empty())
-    return;
-
-  ImportedFaviconUsage usage;
-  if (!FaviconUtil::ReencodeFavicon(
-          reinterpret_cast<const unsigned char*>(&data[0]),
-          data.size(), &usage.png_data))
-    return;  // Unable to decode.
-
-  // We need to make up a URL for the favicon. We use a version of the page's
-  // URL so that we can be sure it will not collide.
-  usage.favicon_url = GURL(std::string("made-up-favicon:") + link_url.spec());
-
-  // We only have one URL per favicon for Firefox 2 bookmarks.
-  usage.urls.insert(link_url);
-
-  favicons->push_back(usage);
-}
-
-}  // namespace
-
-namespace bookmark_html_reader {
-
-void ImportBookmarksFile(
-      const base::Callback<bool(void)>& cancellation_callback,
-      const base::Callback<bool(const GURL&)>& valid_url_callback,
-      const base::FilePath& file_path,
-      std::vector<ImportedBookmarkEntry>* bookmarks,
-      std::vector<ImportedFaviconUsage>* favicons) {
-  std::string content;
-  file_util::ReadFileToString(file_path, &content);
-  std::vector<std::string> lines;
-  base::SplitString(content, '\n', &lines);
-
-  base::string16 last_folder;
-  bool last_folder_on_toolbar = false;
-  bool last_folder_is_empty = true;
-  bool has_subfolder = false;
-  base::Time last_folder_add_date;
-  std::vector<base::string16> path;
-  size_t toolbar_folder_index = 0;
-  std::string charset;
-  for (size_t i = 0;
-       i < lines.size() &&
-           (cancellation_callback.is_null() || !cancellation_callback.Run());
-       ++i) {
-    std::string line;
-    TrimString(lines[i], " ", &line);
-
-    // Get the encoding of the bookmark file.
-    if (internal::ParseCharsetFromLine(line, &charset))
-      continue;
-
-    // Get the folder name.
-    if (internal::ParseFolderNameFromLine(line,
-                                          charset,
-                                          &last_folder,
-                                          &last_folder_on_toolbar,
-                                          &last_folder_add_date)) {
-      continue;
-    }
-
-    // Get the bookmark entry.
-    base::string16 title;
-    base::string16 shortcut;
-    GURL url, favicon;
-    base::Time add_date;
-    base::string16 post_data;
-    bool is_bookmark;
-    // TODO(jcampan): http://b/issue?id=1196285 we do not support POST based
-    //                keywords yet.
-    is_bookmark =
-        internal::ParseBookmarkFromLine(line, charset, &title,
-                                        &url, &favicon, &shortcut,
-                                        &add_date, &post_data) ||
-        internal::ParseMinimumBookmarkFromLine(line, charset, &title, &url);
-
-    if (is_bookmark)
-      last_folder_is_empty = false;
-
-    if (is_bookmark &&
-        post_data.empty() &&
-        (valid_url_callback.is_null() || valid_url_callback.Run(url))) {
-      if (toolbar_folder_index > path.size() && !path.empty()) {
-        NOTREACHED();  // error in parsing.
-        break;
-      }
-
-      ImportedBookmarkEntry entry;
-      entry.creation_time = add_date;
-      entry.url = url;
-      entry.title = title;
-
-      if (toolbar_folder_index) {
-        // The toolbar folder should be at the top level.
-        entry.in_toolbar = true;
-        entry.path.assign(path.begin() + toolbar_folder_index - 1, path.end());
-      } else {
-        // Add this bookmark to the list of |bookmarks|.
-        if (!has_subfolder && !last_folder.empty()) {
-          path.push_back(last_folder);
-          last_folder.clear();
-        }
-        entry.path.assign(path.begin(), path.end());
-      }
-      bookmarks->push_back(entry);
-
-      // Save the favicon. DataURLToFaviconUsage will handle the case where
-      // there is no favicon.
-      if (favicons)
-        DataURLToFaviconUsage(url, favicon, favicons);
-
-      continue;
-    }
-
-    // Bookmarks in sub-folder are encapsulated with <DL> tag.
-    if (StartsWithASCII(line, "<DL>", false)) {
-      has_subfolder = true;
-      if (!last_folder.empty()) {
-        path.push_back(last_folder);
-        last_folder.clear();
-      }
-      if (last_folder_on_toolbar && !toolbar_folder_index)
-        toolbar_folder_index = path.size();
-
-      // Mark next folder empty as initial state.
-      last_folder_is_empty = true;
-    } else if (StartsWithASCII(line, "</DL>", false)) {
-      if (path.empty())
-        break;  // Mismatch <DL>.
-
-      base::string16 folder_title = path.back();
-      path.pop_back();
-
-      if (last_folder_is_empty) {
-        // Empty folder should be added explicitly.
-        ImportedBookmarkEntry entry;
-        entry.is_folder = true;
-        entry.creation_time = last_folder_add_date;
-        entry.title = folder_title;
-        if (toolbar_folder_index) {
-          // The toolbar folder should be at the top level.
-          // Make sure we don't add the toolbar folder itself if it is empty.
-          if (toolbar_folder_index <= path.size()) {
-            entry.in_toolbar = true;
-            entry.path.assign(path.begin() + toolbar_folder_index - 1,
-                              path.end());
-            bookmarks->push_back(entry);
-          }
-        } else {
-          // Add this folder to the list of |bookmarks|.
-          entry.path.assign(path.begin(), path.end());
-          bookmarks->push_back(entry);
-        }
-
-        // Parent folder include current one, so it's not empty.
-        last_folder_is_empty = false;
-      }
-
-      if (toolbar_folder_index > path.size())
-        toolbar_folder_index = 0;
-    }
-  }
-}
-
-namespace internal {
-
-bool ParseCharsetFromLine(const std::string& line, std::string* charset) {
-  const char kCharset[] = "charset=";
-  if (StartsWithASCII(line, "<META", false) &&
-      (line.find("CONTENT=\"") != std::string::npos ||
-          line.find("content=\"") != std::string::npos)) {
-    size_t begin = line.find(kCharset);
-    if (begin == std::string::npos)
-      return false;
-    begin += std::string(kCharset).size();
-    size_t end = line.find_first_of('\"', begin);
-    *charset = line.substr(begin, end - begin);
-    return true;
-  }
-  return false;
-}
-
-bool ParseFolderNameFromLine(const std::string& line,
-                             const std::string& charset,
-                             base::string16* folder_name,
-                             bool* is_toolbar_folder,
-                             base::Time* add_date) {
-  const char kFolderOpen[] = "<DT><H3";
-  const char kFolderClose[] = "</H3>";
-  const char kToolbarFolderAttribute[] = "PERSONAL_TOOLBAR_FOLDER";
-  const char kAddDateAttribute[] = "ADD_DATE";
-
-  if (!StartsWithASCII(line, kFolderOpen, true))
-    return false;
-
-  size_t end = line.find(kFolderClose);
-  size_t tag_end = line.rfind('>', end) + 1;
-  // If no end tag or start tag is broken, we skip to find the folder name.
-  if (end == std::string::npos || tag_end < arraysize(kFolderOpen))
-    return false;
-
-  base::CodepageToUTF16(line.substr(tag_end, end - tag_end), charset.c_str(),
-                        base::OnStringConversionError::SKIP, folder_name);
-  *folder_name = net::UnescapeForHTML(*folder_name);
-
-  std::string attribute_list = line.substr(arraysize(kFolderOpen),
-      tag_end - arraysize(kFolderOpen) - 1);
-  std::string value;
-
-  // Add date
-  if (GetAttribute(attribute_list, kAddDateAttribute, &value)) {
-    int64 time;
-    base::StringToInt64(value, &time);
-    // Upper bound it at 32 bits.
-    if (0 < time && time < (1LL << 32))
-      *add_date = base::Time::FromTimeT(time);
-  }
-
-  if (GetAttribute(attribute_list, kToolbarFolderAttribute, &value) &&
-      LowerCaseEqualsASCII(value, "true"))
-    *is_toolbar_folder = true;
-  else
-    *is_toolbar_folder = false;
-
-  return true;
-}
-
-bool ParseBookmarkFromLine(const std::string& line,
-                           const std::string& charset,
-                           base::string16* title,
-                           GURL* url,
-                           GURL* favicon,
-                           base::string16* shortcut,
-                           base::Time* add_date,
-                           base::string16* post_data) {
-  const char kItemOpen[] = "<DT><A";
-  const char kItemClose[] = "</A>";
-  const char kFeedURLAttribute[] = "FEEDURL";
-  const char kHrefAttribute[] = "HREF";
-  const char kIconAttribute[] = "ICON";
-  const char kShortcutURLAttribute[] = "SHORTCUTURL";
-  const char kAddDateAttribute[] = "ADD_DATE";
-  const char kPostDataAttribute[] = "POST_DATA";
-
-  title->clear();
-  *url = GURL();
-  *favicon = GURL();
-  shortcut->clear();
-  post_data->clear();
-  *add_date = base::Time();
-
-  if (!StartsWithASCII(line, kItemOpen, true))
-    return false;
-
-  size_t end = line.find(kItemClose);
-  size_t tag_end = line.rfind('>', end) + 1;
-  if (end == std::string::npos || tag_end < arraysize(kItemOpen))
-    return false;  // No end tag or start tag is broken.
-
-  std::string attribute_list = line.substr(arraysize(kItemOpen),
-      tag_end - arraysize(kItemOpen) - 1);
-
-  // We don't import Live Bookmark folders, which is Firefox's RSS reading
-  // feature, since the user never necessarily bookmarked them and we don't
-  // have this feature to update their contents.
-  std::string value;
-  if (GetAttribute(attribute_list, kFeedURLAttribute, &value))
-    return false;
-
-  // Title
-  base::CodepageToUTF16(line.substr(tag_end, end - tag_end), charset.c_str(),
-                        base::OnStringConversionError::SKIP, title);
-  *title = net::UnescapeForHTML(*title);
-
-  // URL
-  if (GetAttribute(attribute_list, kHrefAttribute, &value)) {
-    base::string16 url16;
-    base::CodepageToUTF16(value, charset.c_str(),
-                          base::OnStringConversionError::SKIP, &url16);
-    url16 = net::UnescapeForHTML(url16);
-
-    *url = GURL(url16);
-  }
-
-  // Favicon
-  if (GetAttribute(attribute_list, kIconAttribute, &value))
-    *favicon = GURL(value);
-
-  // Keyword
-  if (GetAttribute(attribute_list, kShortcutURLAttribute, &value)) {
-    base::CodepageToUTF16(value, charset.c_str(),
-                          base::OnStringConversionError::SKIP, shortcut);
-    *shortcut = net::UnescapeForHTML(*shortcut);
-  }
-
-  // Add date
-  if (GetAttribute(attribute_list, kAddDateAttribute, &value)) {
-    int64 time;
-    base::StringToInt64(value, &time);
-    // Upper bound it at 32 bits.
-    if (0 < time && time < (1LL << 32))
-      *add_date = base::Time::FromTimeT(time);
-  }
-
-  // Post data.
-  if (GetAttribute(attribute_list, kPostDataAttribute, &value)) {
-    base::CodepageToUTF16(value, charset.c_str(),
-                          base::OnStringConversionError::SKIP, post_data);
-    *post_data = net::UnescapeForHTML(*post_data);
-  }
-
-  return true;
-}
-
-bool ParseMinimumBookmarkFromLine(const std::string& line,
-                                  const std::string& charset,
-                                  base::string16* title,
-                                  GURL* url) {
-  const char kItemOpen[] = "<DT><A";
-  const char kItemClose[] = "</";
-  const char kHrefAttributeUpper[] = "HREF";
-  const char kHrefAttributeLower[] = "href";
-
-  title->clear();
-  *url = GURL();
-
-  // Case-insensitive check of open tag.
-  if (!StartsWithASCII(line, kItemOpen, false))
-    return false;
-
-  // Find any close tag.
-  size_t end = line.find(kItemClose);
-  size_t tag_end = line.rfind('>', end) + 1;
-  if (end == std::string::npos || tag_end < arraysize(kItemOpen))
-    return false;  // No end tag or start tag is broken.
-
-  std::string attribute_list = line.substr(arraysize(kItemOpen),
-      tag_end - arraysize(kItemOpen) - 1);
-
-  // Title
-  base::CodepageToUTF16(line.substr(tag_end, end - tag_end), charset.c_str(),
-                        base::OnStringConversionError::SKIP, title);
-  *title = net::UnescapeForHTML(*title);
-
-  // URL
-  std::string value;
-  if (GetAttribute(attribute_list, kHrefAttributeUpper, &value) ||
-      GetAttribute(attribute_list, kHrefAttributeLower, &value)) {
-    if (charset.length() != 0) {
-      base::string16 url16;
-      base::CodepageToUTF16(value, charset.c_str(),
-                            base::OnStringConversionError::SKIP, &url16);
-      url16 = net::UnescapeForHTML(url16);
-
-      *url = GURL(url16);
-    } else {
-      *url = GURL(value);
-    }
-  }
-
-  return true;
-}
-
-}  // namespace internal
-
-}  // namespace bookmark_html_reader