chrome/browser/upload_list.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/upload_list.h"
   6
   7 #include <algorithm>
   8 #include <iterator>
   9
  10 #include "base/bind.h"
  11 #include "base/file_util.h"
  12 #include "base/strings/string_number_conversions.h"
  13 #include "base/strings/string_split.h"
  14 #include "content/public/browser/browser_thread.h"
  15
  16 using content::BrowserThread;
  17
  18 UploadList::UploadInfo::UploadInfo(const std::string& c, const base::Time& t)
  19     : id(c), time(t) {}
  20
  21 UploadList::UploadInfo::~UploadInfo() {}
  22
  23 UploadList::UploadList(Delegate* delegate,
  24                        const base::FilePath& upload_log_path)
  25     : delegate_(delegate),
  26       upload_log_path_(upload_log_path) {}
  27
  28 UploadList::~UploadList() {}
  29
  30 void UploadList::LoadUploadListAsynchronously() {
  31   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  32   BrowserThread::PostBlockingPoolTask(
  33       FROM_HERE,
  34       base::Bind(&UploadList::LoadUploadListAndInformDelegateOfCompletion,
  35                  this));
  36 }
  37
  38 void UploadList::ClearDelegate() {
  39   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  40   delegate_ = NULL;
  41 }
  42
  43 void UploadList::LoadUploadListAndInformDelegateOfCompletion() {
  44   LoadUploadList();
  45   BrowserThread::PostTask(
  46       BrowserThread::UI,
  47       FROM_HERE,
  48       base::Bind(&UploadList::InformDelegateOfCompletion, this));
  49 }
  50
  51 void UploadList::LoadUploadList() {
  52   if (base::PathExists(upload_log_path_)) {
  53     std::string contents;
  54     base::ReadFileToString(upload_log_path_, &contents);
  55     std::vector<std::string> log_entries;
  56     base::SplitStringAlongWhitespace(contents, &log_entries);
  57     ClearUploads();
  58     ParseLogEntries(log_entries);
  59   }
  60 }
  61
  62 void UploadList::AppendUploadInfo(const UploadInfo& info) {
  63   uploads_.push_back(info);
  64 }
  65
  66 void UploadList::ClearUploads() {
  67   uploads_.clear();
  68 }
  69
  70 void UploadList::ParseLogEntries(
  71     const std::vector<std::string>& log_entries) {
  72   std::vector<std::string>::const_reverse_iterator i;
  73   for (i = log_entries.rbegin(); i != log_entries.rend(); ++i) {
  74     std::vector<std::string> components;
  75     base::SplitString(*i, ',', &components);
  76     // Skip any blank (or corrupted) lines.
  77     if (components.size() != 2)
  78       continue;
  79     double seconds_since_epoch;
  80     if (!base::StringToDouble(components[0], &seconds_since_epoch))
  81       continue;
  82     UploadInfo info(components[1],
  83                     base::Time::FromDoubleT(seconds_since_epoch));
  84     uploads_.push_back(info);
  85   }
  86 }
  87
  88 void UploadList::InformDelegateOfCompletion() {
  89   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  90   if (delegate_)
  91     delegate_->OnUploadListAvailable();
  92 }
  93
  94 void UploadList::GetUploads(unsigned int max_count,
  95                             std::vector<UploadInfo>* uploads) {
  96   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  97   std::copy(uploads_.begin(),
  98             uploads_.begin() + std::min<size_t>(uploads_.size(), max_count),
  99             std::back_inserter(*uploads));
 100 }