GDirectoryModel: Add "modification time" column.

Fixes #373.

2 files changed, 25 insertions, 1 deletions

diff --git a/Libraries/LibGUI/GDirectoryModel.cpp b/Libraries/LibGUI/GDirectoryModel.cpp
index 2034cfa0be..2510fef65c 100644
--- a/Libraries/LibGUI/GDirectoryModel.cpp
+++ b/Libraries/LibGUI/GDirectoryModel.cpp
@@ -3,12 +3,13 @@
 #include <AK/StringBuilder.h>
 #include <LibCore/CDirIterator.h>
 #include <LibCore/CLock.h>
-#include <LibGUI/GPainter.h>
 #include <LibDraw/GraphicsBitmap.h>
+#include <LibGUI/GPainter.h>
 #include <dirent.h>
 #include <grp.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <time.h>
 #include <unistd.h>
 
 static CLockable<HashMap<String, RefPtr<GraphicsBitmap>>>& thumbnail_cache()
@@ -106,6 +107,8 @@ String GDirectoryModel::column_name(int column) const
         return "Group";
     case Column::Permissions:
         return "Mode";
+    case Column::ModificationTime:
+        return "Modified";
     case Column::Inode:
         return "Inode";
     }
@@ -125,6 +128,8 @@ GModel::ColumnMetadata GDirectoryModel::column_metadata(int column) const
         return { 50, TextAlignment::CenterLeft };
     case Column::Group:
         return { 50, TextAlignment::CenterLeft };
+    case Column::ModificationTime:
+        return { 110, TextAlignment::CenterLeft };
     case Column::Permissions:
         return { 60, TextAlignment::CenterLeft };
     case Column::Inode:
@@ -161,6 +166,18 @@ GIcon GDirectoryModel::icon_for(const Entry& entry) const
     return m_file_icon;
 }
 
+static String timestamp_string(time_t timestamp)
+{
+    auto* tm = localtime(&timestamp);
+    return String::format("%4u-%02u-%02u %02u:%02u:%02u",
+        tm->tm_year + 1900,
+        tm->tm_mon + 1,
+        tm->tm_mday,
+        tm->tm_hour,
+        tm->tm_min,
+        tm->tm_sec);
+}
+
 static String permission_string(mode_t mode)
 {
     StringBuilder builder;
@@ -232,6 +249,8 @@ GVariant GDirectoryModel::data(const GModelIndex& index, Role role) const
             return name_for_gid(entry.gid);
         case Column::Permissions:
             return permission_string(entry.mode);
+        case Column::ModificationTime:
+            return entry.mtime;
         case Column::Inode:
             return (int)entry.inode;
         }
@@ -251,6 +270,8 @@ GVariant GDirectoryModel::data(const GModelIndex& index, Role role) const
             return name_for_gid(entry.gid);
         case Column::Permissions:
             return permission_string(entry.mode);
+        case Column::ModificationTime:
+            return timestamp_string(entry.mtime);
         case Column::Inode:
             return (int)entry.inode;
         }
@@ -289,6 +310,7 @@ void GDirectoryModel::update()
         entry.uid = st.st_uid;
         entry.gid = st.st_gid;
         entry.inode = st.st_ino;
+        entry.mtime = st.st_mtime;
         auto& entries = S_ISDIR(st.st_mode) ? m_directories : m_files;
         entries.append(move(entry));
 
diff --git a/Libraries/LibGUI/GDirectoryModel.h b/Libraries/LibGUI/GDirectoryModel.h
index 8787a56d17..e031c9aa69 100644
--- a/Libraries/LibGUI/GDirectoryModel.h
+++ b/Libraries/LibGUI/GDirectoryModel.h
@@ -19,6 +19,7 @@ public:
         Owner,
         Group,
         Permissions,
+        ModificationTime,
         Inode,
         __Count,
     };
@@ -43,6 +44,7 @@ public:
         uid_t uid { 0 };
         uid_t gid { 0 };
         ino_t inode { 0 };
+        time_t mtime { 0 };
         mutable RefPtr<GraphicsBitmap> thumbnail;
         bool is_directory() const { return S_ISDIR(mode); }
         bool is_executable() const { return mode & S_IXUSR; }