michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "crashreporter.h"
michael@0: 
michael@0: #include <dirent.h>
michael@0: #include <sys/stat.h>
michael@0: #include <errno.h>
michael@0: #include <algorithm>
michael@0: 
michael@0: using namespace CrashReporter;
michael@0: using std::string;
michael@0: using std::vector;
michael@0: using std::sort;
michael@0: 
michael@0: struct FileData
michael@0: {
michael@0:   time_t timestamp;
michael@0:   string path;
michael@0: };
michael@0: 
michael@0: static bool CompareFDTime(const FileData& fd1, const FileData& fd2)
michael@0: {
michael@0:   return fd1.timestamp > fd2.timestamp;
michael@0: }
michael@0: 
michael@0: void UIPruneSavedDumps(const std::string& directory)
michael@0: {
michael@0:   DIR *dirfd = opendir(directory.c_str());
michael@0:   if (!dirfd)
michael@0:     return;
michael@0: 
michael@0:   vector<FileData> dumpfiles;
michael@0: 
michael@0:   while (dirent *dir = readdir(dirfd)) {
michael@0:     FileData fd;
michael@0:     fd.path = directory + '/' + dir->d_name;
michael@0:     if (fd.path.size() < 5)
michael@0:       continue;
michael@0: 
michael@0:     if (fd.path.compare(fd.path.size() - 4, 4, ".dmp") != 0)
michael@0:       continue;
michael@0: 
michael@0:     struct stat st;
michael@0:     if (stat(fd.path.c_str(), &st)) {
michael@0:       closedir(dirfd);
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     fd.timestamp = st.st_mtime;
michael@0: 
michael@0:     dumpfiles.push_back(fd);
michael@0:   }
michael@0: 
michael@0:   sort(dumpfiles.begin(), dumpfiles.end(), CompareFDTime);
michael@0: 
michael@0:   while (dumpfiles.size() > kSaveCount) {
michael@0:     // get the path of the oldest file
michael@0:     string path = dumpfiles[dumpfiles.size() - 1].path;
michael@0:     UIDeleteFile(path.c_str());
michael@0: 
michael@0:     // s/.dmp/.extra/
michael@0:     path.replace(path.size() - 4, 4, ".extra");
michael@0:     UIDeleteFile(path.c_str());
michael@0: 
michael@0:     dumpfiles.pop_back();
michael@0:   }
michael@0: }