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      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& id,
     19                                    const base::Time& t,
     20                                    const std::string& local_id)
     21     : id(id), time(t), local_id(local_id) {}
     22 
     23 UploadList::UploadInfo::UploadInfo(const std::string& id, const base::Time& t)
     24     : id(id), time(t) {}
     25 
     26 UploadList::UploadInfo::~UploadInfo() {}
     27 
     28 UploadList::UploadList(Delegate* delegate,
     29                        const base::FilePath& upload_log_path)
     30     : delegate_(delegate),
     31       upload_log_path_(upload_log_path) {}
     32 
     33 UploadList::~UploadList() {}
     34 
     35 void UploadList::LoadUploadListAsynchronously() {
     36   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     37   BrowserThread::PostBlockingPoolTask(
     38       FROM_HERE,
     39       base::Bind(&UploadList::LoadUploadListAndInformDelegateOfCompletion,
     40                  this));
     41 }
     42 
     43 void UploadList::ClearDelegate() {
     44   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     45   delegate_ = NULL;
     46 }
     47 
     48 void UploadList::LoadUploadListAndInformDelegateOfCompletion() {
     49   LoadUploadList();
     50   BrowserThread::PostTask(
     51       BrowserThread::UI,
     52       FROM_HERE,
     53       base::Bind(&UploadList::InformDelegateOfCompletion, this));
     54 }
     55 
     56 void UploadList::LoadUploadList() {
     57   if (base::PathExists(upload_log_path_)) {
     58     std::string contents;
     59     base::ReadFileToString(upload_log_path_, &contents);
     60     std::vector<std::string> log_entries;
     61     base::SplitStringAlongWhitespace(contents, &log_entries);
     62     ClearUploads();
     63     ParseLogEntries(log_entries);
     64   }
     65 }
     66 
     67 void UploadList::AppendUploadInfo(const UploadInfo& info) {
     68   uploads_.push_back(info);
     69 }
     70 
     71 void UploadList::ClearUploads() {
     72   uploads_.clear();
     73 }
     74 
     75 void UploadList::ParseLogEntries(
     76     const std::vector<std::string>& log_entries) {
     77   std::vector<std::string>::const_reverse_iterator i;
     78   for (i = log_entries.rbegin(); i != log_entries.rend(); ++i) {
     79     std::vector<std::string> components;
     80     base::SplitString(*i, ',', &components);
     81     // Skip any blank (or corrupted) lines.
     82     if (components.size() != 2 && components.size() != 3)
     83       continue;
     84     base::Time upload_time;
     85     double seconds_since_epoch;
     86     if (!components[0].empty()) {
     87       if (!base::StringToDouble(components[0], &seconds_since_epoch))
     88         continue;
     89       upload_time = base::Time::FromDoubleT(seconds_since_epoch);
     90     }
     91     UploadInfo info(components[1], upload_time);
     92     if (components.size() == 3)
     93       info.local_id = components[2];
     94     uploads_.push_back(info);
     95   }
     96 }
     97 
     98 void UploadList::InformDelegateOfCompletion() {
     99   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    100   if (delegate_)
    101     delegate_->OnUploadListAvailable();
    102 }
    103 
    104 void UploadList::GetUploads(unsigned int max_count,
    105                             std::vector<UploadInfo>* uploads) {
    106   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
    107   std::copy(uploads_.begin(),
    108             uploads_.begin() + std::min<size_t>(uploads_.size(), max_count),
    109             std::back_inserter(*uploads));
    110 }
    111