From ba8d6648bf7560af65c8cea057b5576a81a83dcc Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Sun, 27 May 2018 15:55:00 +0400
Subject: [PATCH] (Legacy): IFP archives.

---
 Legacy/Winters/ArcIFP.cs | 92 ++++++++++++++++++++++++++++++++++++++++
 Legacy/Winters/ArcIFX.cs |  4 +-
 2 files changed, 94 insertions(+), 2 deletions(-)
 create mode 100644 Legacy/Winters/ArcIFP.cs

diff --git a/Legacy/Winters/ArcIFP.cs b/Legacy/Winters/ArcIFP.cs
new file mode 100644
index 00000000..9e77985e
--- /dev/null
+++ b/Legacy/Winters/ArcIFP.cs
@@ -0,0 +1,92 @@
+//! \file       ArcIFP.cs
+//! \date       2018 May 23
+//! \brief      Winters resource archive.
+//
+// Copyright (C) 2018 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+// [020426][Winters] Kiss x 200 To Aru Bunkou no Hanashi
+// [040528][Winters] Kiss x 300 Konna Sekai
+
+namespace GameRes.Formats.Winters
+{
+    [Export(typeof(ArchiveFormat))]
+    public class IfpOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "IFP"; } }
+        public override string Description { get { return "Winters resource archive"; } }
+        public override uint     Signature { get { return 0x53474149; } } // 'IAGS_IFP_01'
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.View.AsciiEqual (4, "_IFP_01     ")
+                || file.View.ReadInt32 (0x10) != 1)
+                return null;
+            int count = file.View.ReadInt32 (0x18) / 0x10 - 1;
+            if (!IsSaneCount (count))
+                return null;
+            var base_name = Path.GetFileNameWithoutExtension (file.Name);
+            var dir = new List<Entry>();
+            for (int i = 0, index_offset = 0x20; i < count; ++i, index_offset += 0x10)
+            {
+                int type = file.View.ReadUInt16 (index_offset);
+                if (0 == type)
+                    continue;
+                int mask_type = file.View.ReadUInt16 (index_offset+2);
+                var entry = new Entry {
+                    Name = string.Format ("{0}#{1:D5}", base_name, i),
+                    Offset = file.View.ReadUInt32 (index_offset+4),
+                    Size = file.View.ReadUInt32 (index_offset+8),
+                };
+                if (!entry.CheckPlacement (file.MaxOffset))
+                    return null;
+                switch (type)
+                {
+                case 0x0B: entry.ChangeType (ImageFormat.Bmp); break;
+                case 0x0C: entry.Type = "image"; break;
+                case 0x0D: entry.ChangeType (ImageFormat.Jpeg); break;
+                case 0x15: entry.Type = "script"; break;
+                }
+                dir.Add (entry);
+                uint mask_size = file.View.ReadUInt32 (index_offset+12);
+                if (0x0B == mask_type && 0 != mask_size)
+                {
+                    entry = new Entry {
+                        Name = string.Format ("{0}#{1:D5}M.bmp", base_name, i),
+                        Type = "image",
+                        Offset = entry.Offset + entry.Size,
+                        Size = mask_size,
+                    };
+                    dir.Add (entry);
+                }
+            }
+            if (0 == dir.Count)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+    }
+}
diff --git a/Legacy/Winters/ArcIFX.cs b/Legacy/Winters/ArcIFX.cs
index cd9f6461..e2e4788b 100644
--- a/Legacy/Winters/ArcIFX.cs
+++ b/Legacy/Winters/ArcIFX.cs
@@ -46,11 +46,11 @@ namespace GameRes.Formats.Winters
                 return null;
             var base_name = Path.GetFileNameWithoutExtension (file.Name);
             var dir = new List<Entry>();
-            for (uint index_offset = 0x20; index_offset < 0x10000; index_offset += 0x10)
+            for (int i = 0, index_offset = 0x20; index_offset < 0x10000; index_offset += 0x10, ++i)
             {
                 if (file.View.ReadUInt16 (index_offset) == 0)
                     continue;
-                var name = string.Format ("{0}#{1:D5}", base_name, dir.Count);
+                var name = string.Format ("{0}#{1:D5}", base_name, i);
                 uint offset = file.View.ReadUInt32 (index_offset+4);
                 var entry = AutoEntry.Create (file, offset, name);
                 entry.Size = file.View.ReadUInt32 (index_offset+8);