From f44414db8114fb17d2346d2897ecf98893ce8bdf Mon Sep 17 00:00:00 2001
From: santigl <santix91@gmail.com>
Date: Fri, 17 Mar 2017 13:54:02 -0300
Subject: [PATCH] Add Utilities::SaveToTemporaryFile()

---
 src/core/utilities.cpp | 44 ++++++++++++++++++++++++++++--------------
 src/core/utilities.h   |  2 ++
 2 files changed, 32 insertions(+), 14 deletions(-)

diff --git a/src/core/utilities.cpp b/src/core/utilities.cpp
index 739cadb93..c3c8e9f15 100644
--- a/src/core/utilities.cpp
+++ b/src/core/utilities.cpp
@@ -100,7 +100,8 @@ QString PrettyTime(int seconds) {
 
   QString ret;
   if (hours)
-    ret.sprintf("%d:%02d:%02d", hours, minutes, seconds);  // NOLINT(runtime/printf)
+    ret.sprintf("%d:%02d:%02d", hours, minutes,
+                seconds);  // NOLINT(runtime/printf)
   else
     ret.sprintf("%d:%02d", minutes, seconds);  // NOLINT(runtime/printf)
 
@@ -161,11 +162,15 @@ QString PrettySize(quint64 bytes) {
     if (bytes <= 1000)
       ret = QString::number(bytes) + " bytes";
     else if (bytes <= 1000 * 1000)
-      ret.sprintf("%.1f KB", static_cast<float>(bytes) / 1000);  // NOLINT(runtime/printf)
+      ret.sprintf("%.1f KB",
+                  static_cast<float>(bytes) / 1000);  // NOLINT(runtime/printf)
     else if (bytes <= 1000 * 1000 * 1000)
-      ret.sprintf("%.1f MB", static_cast<float>(bytes) / (1000 * 1000));  // NOLINT(runtime/printf)
+      ret.sprintf("%.1f MB", static_cast<float>(bytes) /
+                                 (1000 * 1000));  // NOLINT(runtime/printf)
     else
-      ret.sprintf("%.1f GB", static_cast<float>(bytes) / (1000 * 1000 * 1000));  // NOLINT(runtime/printf)
+      ret.sprintf("%.1f GB",
+                  static_cast<float>(bytes) /
+                      (1000 * 1000 * 1000));  // NOLINT(runtime/printf)
   }
   return ret;
 }
@@ -231,6 +236,23 @@ QString GetTemporaryFileName() {
   return file;
 }
 
+QString SaveToTemporaryFile(const QByteArray& data) {
+  QString filename = GetTemporaryFileName();
+
+  QFile file(filename);
+  if (!file.open(QIODevice::WriteOnly)) {
+    return QString();
+  }
+
+  if (file.write(data) != data.size()) {
+    file.remove();
+    return QString();
+  }
+
+  file.close();
+  return filename;
+}
+
 bool RemoveRecursive(const QString& path) {
   QDir dir(path);
   for (const QString& child :
@@ -562,19 +584,13 @@ bool ParseUntilElement(QXmlStreamReader* reader, const QString& name) {
 }
 
 QDateTime ParseRFC822DateTime(const QString& text) {
-  QRegExp regexp("(\\d{1,2}) (\\w{3,12}) (\\d+) (\\d{1,2}):(\\d{1,2}):(\\d{1,2})");
+  QRegExp regexp(
+      "(\\d{1,2}) (\\w{3,12}) (\\d+) (\\d{1,2}):(\\d{1,2}):(\\d{1,2})");
   if (regexp.indexIn(text) == -1) {
     return QDateTime();
   }
 
-  enum class MatchNames {
-    DAYS = 1,
-    MONTHS,
-    YEARS,
-    HOURS,
-    MINUTES,
-    SECONDS
-  };
+  enum class MatchNames { DAYS = 1, MONTHS, YEARS, HOURS, MINUTES, SECONDS };
 
   QMap<QString, int> monthmap;
   monthmap["Jan"] = 1;
@@ -610,7 +626,7 @@ QDateTime ParseRFC822DateTime(const QString& text) {
                    regexp.cap(static_cast<int>(MatchNames::MINUTES)).toInt(),
                    regexp.cap(static_cast<int>(MatchNames::SECONDS)).toInt());
 
-  return QDateTime (date, time);
+  return QDateTime(date, time);
 }
 
 const char* EnumToString(const QMetaObject& meta, const char* name, int value) {
diff --git a/src/core/utilities.h b/src/core/utilities.h
index 5fd8fc102..6d1a8972d 100644
--- a/src/core/utilities.h
+++ b/src/core/utilities.h
@@ -56,6 +56,8 @@ quint64 FileSystemFreeSpace(const QString& path);
 
 QString MakeTempDir(const QString template_name = QString());
 QString GetTemporaryFileName();
+QString SaveToTemporaryFile(const QByteArray& data);
+
 bool RemoveRecursive(const QString& path);
 bool CopyRecursive(const QString& source, const QString& destination);
 bool Copy(QIODevice* source, QIODevice* destination);