Release note of version 1.3.3.3

Fix access violation in some certain conditions

README.md

@@ -1,45 +1,55 @@
 # MultiPar
 
-### v1.3.3.2 is public
+### v1.3.3.3 is public
 
-  This is a small fix version to improve performance of GPU acceleration. 
+  I fixed a few rare bugs in this version. 
-It will become faster on AMD Radeon graphics boards. 
+While most users were not affected by those problems, 
-It may be slightly faster on Nvidia GeForce graphics boards. 
+those who saw the matter would better use new version. 
-There is no difference in CPU calculation. 
+If there is a problem still, I will fix as possible as I can. 
-Because this isn't tested so much, there may be a bug, failure, or mistake. 
+I updated some help documents about Batch script. 
-If you see a problem, please report the incident. 
+I mentioned the location of help files in ReadMe text.
-I will try to solve as possible as I can.
 
-  I changed 3 points in my OpenCL implementation. 
+  New version supports a PC with max 8 OpenCL devices. 
-It's possible to test them by `lc` option at command-line. 
+Thanks [Yi Gu for reporting bug in a rare environment](https://github.com/Yutaka-Sawada/MultiPar/issues/110). 
-Thanks [cavalia88, Slava46, and Anime Tosho for many tests and wonderful idea](https://github.com/Yutaka-Sawada/MultiPar/issues/107). 
+I didn't think a user put so many OpenCL devices on a PC. 
-OpenCL perfomance is varied in every graphics boards. 
+It will detect a Graphics board correctly.
-If you have a fast graphics board, enabling "GPU acceleration" would be faster. 
+
-If it's not so fast (or is slow) on your PC, just un-check the feature.
+  I improved source file splitting feature at creating PAR2 files. 
-1) Data transfur between PC's RAM and GPU's VRAM
+Thanks [AreteOne for reporting bug and suggestion of improvment](https://github.com/Yutaka-Sawada/MultiPar/issues/117). 
-2) Calculation over GPU
+When file extension is a number, it didn't handle properly. 
-3) Calculate 2 blocks at once to reduce number of table lookup
+If someone saw strange behavior at file splitting ago, it should have been solved in this version.
+
+  I fixed a bug in verifying external files. 
+It might not find the last slice in a source file, when the file data is redundant. 
+Thanks [dle-fr for reporting bug and testing many times](https://github.com/Yutaka-Sawada/MultiPar/issues/130). 
+This solution may improve verification of damaged files, too. 
+When source files are mostly random data like commpressed archive, there was no problem.
 
 
-[ Changes from 1.3.3.1 to 1.3.3.2 ]  
+[ Changes from 1.3.3.2 to 1.3.3.3 ]  
+
+Installer update
+- Inno Setup was updated from v6.2.2 to v6.3.1.
 
 PAR2 client update
-- Improvement
+- Bug fix
-  - GPU acceleration will work well on AMD graphics boards.
+  - Fixed a bug in GPU acceleration, when there are many OpenCL devices.
+  - Failure of splitting source files with numerical extension was fixed.
+  - Faulty prediction of the last block in a file with repeated data was fixed.
 
 
 [ Hash value ]  
 
-MultiPar1332.zip  
+MultiPar1333.zip  
-MD5: 5F2848ED7F65C632D1FED42A39B66F95  
+MD5: 01A201CA340C33053E6D7D2604D54019  
-SHA1: CFA2CC6D217704BE2AF9DEDE15B117E9DC26A25B  
+SHA1: F7C30A7BDEB4152820C9CFF8D0E3DA719F69D7C6  
 
-MultiPar1332_setup.exe  
+MultiPar1333_setup.exe  
-MD5: 338F9D0842762338DC83921BBE546AF8  
+MD5: 33F9E441F5C1B2C00040E9BAFA7CC1A9  
-SHA1: 2A11FD544D49AA7B952214733C9D8E53F647592E  
+SHA1: 6CEBED8CECC9AAC5E8070CD5E8D1EDF7BBBC523A  
   To install under "Program Files" or "Program Files (x86)" directory, 
 you must select "Install for all users" at the first dialog.
 
   Old versions and source code packages are available at 
 [GitHub](https://github.com/Yutaka-Sawada/MultiPar/releases) or 
-[OneDrive](https://1drv.ms/u/s!AtGhNMUyvbWOaSo1n_R8awJ_hg0).
+[OneDrive](https://1drv.ms/f/c/8eb5bd32c534a1d1/QtGhNMUyvbUggI5pAAAAAAAAKjWf9HxrAn-GDQ).

alpha/ReadMe_English.txt

@@ -25,7 +25,13 @@ Be careful to use those special features.
 
 [ System requirement ]
 
- MultiPar requires a PC with Windows Vista or later (Windows 7, 8, 10).
+ MultiPar requires a PC with Windows Vista or later (Windows 7, 8, 10, 11).
+
+[ Usage manual or Help documents ]
+
+ There are some usage manual or help documents in "help" folder.
+English pages exists in "help/0409" folder.
+You may open the manual by pushing "F1-key", while using MultiPar.
 
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

alpha/ReadMe_Japanese.txt

@@ -54,7 +54,13 @@ QuickPar など他の PAR クライアントはコメント機能に対応して
 
 [ 動作環境 ]
 
-　Windows Vista かそれ以降 (Windows 7, 8, 10) のパソコンが必要です。
+　Windows Vista かそれ以降 (Windows 7, 8, 10, 11) のパソコンが必要です。
+
+[ 使い方や解説文章 ]
+
+　ほとんど英語ですが、help フォルダーの中に使い方や解説文章が入ってます。
+日本語のページは help\0411 フォルダーの中にあります。
+MultiPar の使用中に、F1-key を押すと、マニュアルが表示されます。
 
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

alpha/Update_English.txt

@@ -1,6 +1,22 @@
 Release note of v1.3.3 tree
 
  par2j's "lc" option was changed to support more threads.
+ Windows Vista will be removed from supported OS.
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+[ Changes from 1.3.3.2 to 1.3.3.3 ] (2024/06/15)
+
+Installer update
+ Inno Setup was updated from v6.2.2 to v6.3.1.
+
+PAR2 client update
+ Bug fix
+  Fixed a bug in GPU acceleration, when there are many OpenCL devices.
+  Failure of splitting source files with numerical extension was fixed.
+  Faulty prediction of the last block in a file with repeated data was fixed.
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 [ Changes from 1.3.3.1 to 1.3.3.2 ] (2024/01/10)
 

alpha/Update_Japanese.txt

@@ -1,6 +1,6 @@
-v1.3.3 の更新情報 (2024/01/10)
+v1.3.3 の更新情報 (2024/06/15)
 
-　まだ動作実験中ですので、不安な人は前のバージョンを使ってください。
+　Windows Vista を動作対象の OS から外す予定です。
 
 [ 1.3.2 から 1.3.3 への変更点 ]
 

alpha/help/0409/batch.htm

@@ -16,7 +16,7 @@ textarea{width:100%;}
 
 <p>&nbsp
 Because MultiPar consists of PAR clients and GUI, 
-it is possible to use a PAR client on Command prompt. 
+it is possible to use a PAR client on Command Prompt. 
 Read a manual of command line for the details of command and option. 
 It's available by batch file (or command script).
 </p>
@@ -27,13 +27,57 @@ Modify the options for PAR2 files, and set the path of <tt>par2j.exe</tt>.
 Write absolute path like;<br>
 <code>SET par2_path="C:\something directory\MultiPar\par2j.exe"</code><br>
 Read manuals (<tt>Command_***.txt</tt>) to know the detail of options. 
-Read Windows OS 's help for Command prompt's usage.
+Read Windows OS 's help for Command Prompt's usage.
 </p>
 <p>&nbsp
 Save a sample script to a file like <tt>batch.bat</tt> or <tt>batch.cmd</tt>. 
-To specify path of files or folders, Drag & Drop them on the batch file. 
+There are some ways to specify a file or folder.<br>
-When you put a shortcut icon of the batch file in "SendTo" menu, 
+<ol>
-you can call the batch file by selecting files then Righ-Click & SendTo.
+<li>Type everytime by keyboard on Command Prompt
+<p>&nbsp
+If you use the batch file at Command Prompt, change directory to the batch file at first. 
+Next, type <tt>batch.bat "path of the file or folder"</tt>. 
+If there is no space in the path, no need to cover by <tt>""</tt>. 
+The path may be absolute path or relative path from the batch file. 
+Normally absolute path would be safe.
+</p>
+<p>&nbsp
+If you want to specify multiple files or folders, 
+type <tt>batch.bat "path of the first file or folder" "path of second file or folder" "path of third file or folder"</tt>. 
+You may add some pathes after a script filename.
+</p>
+</li>
+<li>Drag & Drop a file or folder by mouse
+<p>&nbsp
+On Windows Explorer, drag a file or folder and drop it on your batch file. 
+If you put the batch file on Desktop, it will be easy to Drag & Drop.
+</p>
+<p>&nbsp
+If you want to specify multiple files or folders, 
+select them at once on Windows Explorer, and Drag & Drop the group on the batch file. 
+While dragging, number of items may be shown.
+</p>
+</li>
+<li>Select SendTo at Windows Explorer's right click menu
+<p>&nbsp
+At first, create Short-cut icon of your batch file. 
+Name it to be something easy to understand like "Create PAR2". 
+Then, put the Short-cut icon in your <tt>SendTo</tt> folder. 
+You can open the <tt>SendTo</tt> folder by typing <tt>shell:sendto</tt> on path-box of Windows Explorer.
+</p>
+<p>&nbsp
+After you select a file or folder on Windows Explorer, click mouse's right button. 
+Select "SendTo" item on the right-click menu. 
+As your created Short-cut item will exist in the SendTo sub-menu, select the Short-cut icon.
+</p>
+<p>&nbsp
+If you want to specify multiple files or folders, 
+select them at once on Windows Explorer. 
+While mouse cursor over there, click mouse's right button. 
+Later action is same as single item.
+</p>
+</li>
+</ol>
 </p>
 <p>&nbsp
 If you want to confirm the result of scripting, 

alpha/help/0409/index.htm

@@ -51,7 +51,7 @@ There are command-line manuals in "<tt>help</tt>" folder.
 </table>
 
 <hr>
-<small>last update 2023/11/11 for version 1.3.3.1</small>
+<small>last update 2024/04/13 for version 1.3.3.3</small>
 
 </body>
 </html>

alpha/help/0409/readme1.htm

@@ -31,7 +31,14 @@ Be careful to use those special features.
 
 <h3>System requirement</h3>
 <p>&nbsp
-MultiPar requires a PC with Windows Vista or later (Windows 7, 8, 10).
+MultiPar requires a PC with Windows Vista or later (Windows 7, 8, 10, 11).
+</p>
+
+<h3>Usage manual or Help documents</h3>
+<p>&nbsp
+There are some usage manual or help documents in "help" folder.
+English pages exists in "help/0409" folder.
+You may open the manual by pushing "F1-key", while using MultiPar.
 </p>
 
 </body>

alpha/help/0411/index.htm

@@ -51,7 +51,7 @@
 </table>
 
 <hr>
-<small><EFBFBD>ŏI<EFBFBD>X<EFBFBD>V 2023/11/11 (<28>o<EFBFBD>[<5B>W<EFBFBD><57><EFBFBD><EFBFBD> 1.3.3.1)</small>
+<small><EFBFBD>ŏI<EFBFBD>X<EFBFBD>V 2024/04/13 (<28>o<EFBFBD>[<5B>W<EFBFBD><57><EFBFBD><EFBFBD> 1.3.3.3)</small>
 
 </body>
 </html>

alpha/help/0411/readme1.htm

@@ -25,7 +25,14 @@ QuickPar
 
 <h3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>‹<EFBFBD></h3>
 <p>&nbsp
-Windows Vista <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȍ~ (Windows 7, 8, 10) <20>̃p<CC83>\<5C>R<EFBFBD><52><EFBFBD><EFBFBD><EFBFBD>K<EFBFBD>v<EFBFBD>ł<EFBFBD><C582>B
+Windows Vista <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȍ~ (Windows 7, 8, 10, 11) <20>̃p<CC83>\<5C>R<EFBFBD><52><EFBFBD><EFBFBD><EFBFBD>K<EFBFBD>v<EFBFBD>ł<EFBFBD><C582>B
+</p>
+
+<h3><EFBFBD>g<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h3>
+<p>&nbsp
+<EFBFBD>قƂ<EFBFBD><EFBFBD>ljp<EFBFBD><EFBFBD><EFBFBD>ł<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ahelp <20>t<EFBFBD>H<EFBFBD><48><EFBFBD>_<EFBFBD>[<5B>̒<EFBFBD><CC92>Ɏg<C98E><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͂<EFBFBD><CD82><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ă܂<C482><DC82>B
+<EFBFBD><EFBFBD><EFBFBD>{<7B><><EFBFBD>̃y<CC83>[<5B>W<EFBFBD><57> help\0411 <20>t<EFBFBD>H<EFBFBD><48><EFBFBD>_<EFBFBD>[<5B>̒<EFBFBD><CC92>ɂ<EFBFBD><C982><EFBFBD><EFBFBD>܂<EFBFBD><DC82>B
+MultiPar <20>̎g<CC8E>p<EFBFBD><70><EFBFBD>ɁAF1-key <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƁA<C681>}<7D>j<EFBFBD><6A><EFBFBD>A<EFBFBD><41><EFBFBD><EFBFBD><EFBFBD>\<5C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>܂<EFBFBD><DC82>B
 </p>
 
 </body>

alpha/help/Command_GUI.txt

@@ -1,4 +1,4 @@
-[ MultiPar GUI - version 1.3.3.0 or later ]
+[ MultiPar GUI - version 1.3.3.3 or later ]
 
 Usage: MultiPar.exe [command] [/base path] [/list path] [files]
 
@@ -99,6 +99,11 @@ write a line of "RecoveryFileLimit=1" under "[Option]" section.
 It's same as an option:
 "Variable (limited to size of largest data file)" on QuickPar.
 
+ If you want to limit size of Recovery Files by a specific value,
+write a line of "RecoveryFileLimit=2" under "[Option]" section.
+"Limit Size to" value is enabled, even when "Split Files" isn't checked.
+This setting is useful, if you don't want to split source files.
+
  If you want to enable "Most Resent Used List",
 write this line "MRUMax=5" under "[Path]" section.
 You may change the number of items after "MRUMax=".

source/par2j/create.c

@@ -1,5 +1,5 @@
 // create.c
-// Copyright : 2023-12-12 Yutaka Sawada
+// Copyright : 2024-02-09 Yutaka Sawada
 // License : GPL
 
 #ifndef _UNICODE
@@ -1829,10 +1829,12 @@ int split_files(
 		}
 		if (ext_len > 0){	// 全て数字の拡張子を持つソース・ファイルがあるなら
 			//printf_cp("\n risky name = %s \n", file_name);
+			wcscpy(file_path, file_name);	// 比較用に拡張子を取り除く
+			file_path[name_len] = 0;
 			for (num2 = 0; num2 < file_num; num2++){
 				if (num2 == num)
 					continue;
-				if (_wcsnicmp(list_buf + files[num2].name, file_name, name_len) == 0){
+				if (_wcsicmp(list_buf + files[num2].name, file_path) == 0){
 					//printf_cp(" match name = %s \n", list_buf + files[num2].name);
 					num8 = (files[num2].size + (__int64)split_size - 1) / split_size;
 					split_max = (int)num8;
@@ -1843,7 +1845,7 @@ int split_files(
 					if (((split_max < 1000) && (ext_len >= 5)) || ((split_max < 10000) && (ext_len >= 6)))
 						continue;	// 拡張子の桁数が異なる
 					// 上書きする危険性があるのでエラーにする
-					printf_cp("split bad file, %s\n", file_name);
+					printf_cp("split bad file, %s\n", list_buf + files[num2].name);
 					*cur_num = -1;
 					*cur_id = 0;
 					return 1;

source/par2j/lib_opencl.c

@@ -1,5 +1,5 @@
 // lib_opencl.c
-// Copyright : 2023-12-26 Yutaka Sawada
+// Copyright : 2024-01-21 Yutaka Sawada
 // License : GPL
 
 #ifndef _WIN32_WINNT
@@ -75,7 +75,7 @@ typedef cl_int (CL_API_CALL *API_clEnqueueNDRangeKernel)(cl_command_queue, cl_ke
 extern unsigned int cpu_flag;	// declared in common2.h
 extern int cpu_num;
 
-#define MAX_DEVICE 3
+#define MAX_DEVICE 8
 
 HMODULE hLibOpenCL = NULL;
 
@@ -235,6 +235,8 @@ int init_OpenCL(unsigned int unit_size, int *src_max)
 	ret = fn_clGetPlatformIDs(MAX_DEVICE, platform_id, &num_platforms);
 	if (ret != CL_SUCCESS)
 		return (ret << 8) | 10;
+	if (num_platforms > MAX_DEVICE)
+		num_platforms = MAX_DEVICE;
 	if (OpenCL_method & 0x200){	// 選択する順序と初期値を変える
 		gpu_power = INT_MIN;
 	} else {
@@ -254,6 +256,8 @@ int init_OpenCL(unsigned int unit_size, int *src_max)
 		// 環境内の OpenCL 対応機器の数
 		if (fn_clGetDeviceIDs(platform_id[i], CL_DEVICE_TYPE_GPU, MAX_DEVICE, device_id, &num_devices) != CL_SUCCESS)
 			continue;
+		if (num_devices > MAX_DEVICE)
+			num_devices = MAX_DEVICE;
 
 		for (j = 0; j < (int)num_devices; j++){
 			// デバイスが利用可能か確かめる

source/par2j/res_par2j.rc

@@ -1,7 +1,7 @@
 1 RT_STRING ".\\source.cl"
 
 1 VERSIONINFO
-FILEVERSION 1,3,3,2
+FILEVERSION 1,3,3,3
 PRODUCTVERSION 1,3,3,0
 FILEOS 0x40004
 FILETYPE 0x1
@@ -13,7 +13,7 @@ BLOCK "StringFileInfo"
 		VALUE "FileDescription", "PAR2 client"
 		VALUE "LegalCopyright", "Copyright (C) 2024 Yutaka Sawada"
 		VALUE "ProductName", "par2j"
-		VALUE "FileVersion", "1.3.3.2"
+		VALUE "FileVersion", "1.3.3.3"
 		VALUE "ProductVersion", "1.3.3.0"
 	}
 }

source/par2j/verify.c

@@ -1,5 +1,5 @@
 // verify.c
-// Copyright : 2022-10-14 Yutaka Sawada
+// Copyright : 2024-06-09 Yutaka Sawada
 // License : GPL
 
 #ifndef _UNICODE
@@ -1253,21 +1253,22 @@ static int search_block_slide(
 	slice_ctx *sc)
 {
 	unsigned char *buf, hash[16], hash2[16], err_mag, *short_use;
-	int i, j, find_num, find_flag, find_next, find_last, short_next;
+	int i, j, find_num, find_flag, find_next, find_last, short_next, short2_next, tmp_next;
 	int block_count, short_count, tiny_count, tiny_skip, num, i1, i2, i3, i4;
 	int *order, *index, index_shift;
 	unsigned int len, off, end_off, err_off;
 	unsigned int prev_crc, fail_count, rear_off, overlap_count;
 	unsigned int crc, *crcs, *short_crcs;
 	unsigned int time_last, time_slide;
-	__int64 file_off, file_next, short_off, fail_off;
+	__int64 file_off, file_next, short_off, short2_off, tmp_off, fail_off;
 
 	if (file_size + 1 < last_off + (__int64)(sc->min_size))
 		return 0;	// 小さすぎるファイルは調べない
 	find_num = 0;	// このファイル内で何ブロック見つけたか
 	find_next = -1;	// 次に見つかると予想したブロックの番号
 	find_last = -1;	// 最後に見つけたブロックの番号 (-1=不明)
-	short_next = -1;
+	short_next = -1;	// 予想される末尾ブロックの番号
+	short2_next = -1;
 	fail_count = 0;	// CRC は一致したけど MD5 が違った回数
 	fail_off = 0;
 	rear_off = 0;
@@ -1278,24 +1279,32 @@ static int search_block_slide(
 			find_last = find_next - 1;	// 最後に見つけたブロックの番号
 		if ((last_off >= files[num1].size) || (last_off + block_size > file_size + 1))
 			find_next = -1;	// 予想位置がファイル・サイズを超えると駄目
-		if ((last_size < block_size) && (files[num1].b_num >= 2) &&	// 末尾の半端なブロックの番号と想定位置
+		if ((last_size < block_size) && (last_off < files[num1].size)){	// 末尾の半端なブロックの番号と想定位置
-				(last_off < files[num1].size) && (files[num1].size <= file_size + 1)){
+			tmp_next = files[num1].b_off + files[num1].b_num - 1;	// 末尾ブロックの番号
-			short_next = files[num1].b_off + files[num1].b_num - 1;	// 末尾ブロックの番号
+			if (find_next == tmp_next)
-			if (find_next == short_next)
 				find_next = -1;	// 予想が重複したら末尾ブロックとして探す
+			if ((files[num1].b_num >= 2) && (files[num1].size <= file_size + 1)){	// 本来の位置を調べる
+				short_next = tmp_next;
 				short_off = files[num1].size - last_size;
-		// ファイルサイズが1ブロック未満でも、同じサイズならエラー訂正を試みる
+			} else if ((last_off == 0) && (file_size == last_size)){	// ファイルが1ブロック未満でも、同じサイズならエラー訂正を試みる
-		} else if ((last_off == 0) && (file_size == files[num1].size) && (file_size < (__int64)block_size)){
+				short_next = tmp_next;
 				short_off = 0;
-			short_next = files[num1].b_off;
+			}
+			if (last_size < file_size){	// 末尾を調べる
+				short2_next = tmp_next;
+				short2_off = file_size - last_size;
+			}
 		}
 		if (file_size > files[num1].size){
 			rear_off = (unsigned int)((file_size - files[num1].size) % (__int64)block_size);
 		} else if (file_size < files[num1].size){
 			rear_off = block_size - (unsigned int)((files[num1].size - file_size) % (__int64)block_size);
 		}
-		//printf("file = %d, find_next = %d, find_last = %d\n", num1, find_next, find_last);
+/*		printf("file = %d, find_next = %d, find_last = %d, rear_off = %d\n", num1, find_next, find_last, rear_off);
-		//printf("short_off = %I64d, short_next = %d, rear_off = %d\n", short_off, short_next, rear_off);
+		if (short_next >= 0)
+			printf("short_off  = %I64d, short_next  = %d\n", short_off, short_next);
+		if (short2_next >= 0)
+			printf("short2_off = %I64d, short2_next = %d\n", short2_off, short2_next);*/
 	}
 	file_off = last_off;	// 検査開始位置から調べる
 	buf = sc->buf;
@@ -1374,8 +1383,11 @@ static int search_block_slide(
 						if (last_off < file_off + last_size)
 							last_off = file_off + last_size;	// 一番大きな半端なブロックの終端
 						find_next = -2;	// 小さなファイルが見つかった = ブロック検出の予想が外れた
-						if (i == short_next)
+						if (i == short_next){	// この末尾ブロックは検出済み
-							short_next = -1;	// 末尾ブロックは検出済み
+							short_next = -1;
+						} else if (i == short2_next){
+							short2_next = -1;
+						}
 
 						// 経過表示
 						if (GetTickCount() - time_last >= UPDATE_TIME){
@@ -1416,7 +1428,7 @@ static int search_block_slide(
 
 	// ブロック・サイズごとに探す
 	if (((block_count > 0) && ((file_off + (__int64)block_size <= file_size)
-			|| (find_next >= 0))) || (short_next >= 0)){	// ブロックの位置を予想して探す
+			|| (find_next >= 0))) || (short_next >= 0) || (short2_next >= 0)){	// ブロックの位置を予想して探す
 		// 前からスライドさせながらチェックサムを比較する
 		//printf("slide search from %I64d, file %d, next = %d\n", file_off, num1, find_next);
 		off = 0;	// buf 内でのオフセット
@@ -1445,8 +1457,13 @@ static int search_block_slide(
 			while (off < end_off){
 				find_flag = -2;
 				// 次の番号のブロックがその位置にあるかを先に調べる (発見済みでも)
-				if ((short_next >= 0) && (file_off + off == short_off)){	// 半端なブロックなら
+				if (((short_next >= 0) && (file_off + off == short_off)) ||
+						((short2_next >= 0) && (file_off + off == short2_off))){	// 半端なブロックなら
+					if ((short_next >= 0) && (file_off + off == short_off)){
 						i = short_next;
+					} else {
+						i = short2_next;
+					}
 					num = s_blk[i].file;
 					if ((short_use[num] & 4) == 0){	// パディング部分を取り除いた CRC-32 を逆算する
 						short_crcs[num] = crc_reverse_zero(s_blk[i].crc, block_size - s_blk[i].size);
@@ -1456,7 +1473,8 @@ static int search_block_slide(
 					find_flag = correct_error(buf + off, s_blk[i].size, s_blk[i].hash, short_crcs[num], &err_off, &err_mag);
 					if (find_flag == 0)
 						find_flag = 2;
-				} else if ((find_next >= 0) && (file_off + off == last_off)){	// フルサイズのブロックなら
+				}
+				if ((find_flag < 0) && (find_next >= 0) && (file_off + off == last_off)){	// フルサイズのブロックなら
 					i = find_next;
 					if (crc == s_blk[i].crc){
 						data_md5(buf + off, block_size, hash);
@@ -1661,20 +1679,81 @@ static int search_block_slide(
 					find_next = i + 1;
 					if ((find_next >= source_num) || (s_blk[find_next].file != num)){
 						// 最後までいった、またはファイルが異なる
-						short_next = -1;
 						find_next = -1;
+						if ((short_next >= 0) && ((s_blk[short_next].exist & 0x1000) != 0))
+							short_next = -1;
+						if ((short2_next >= 0) && ((s_blk[short2_next].exist & 0x1000) != 0))
+							short2_next = -1;
 					} else if (s_blk[find_next].size < block_size){	// 半端なブロックは別に調べる
-						short_next = find_next;
+						if (file_off + off + block_size + s_blk[find_next].size <= file_size){	// ファイル内に収まってる時だけ
-						short_off = file_off + off + block_size;
+							tmp_next = find_next;
-						//printf("short_off = %I64d, short_next = %d, file = %d\n", short_off, short_next, num);
+							tmp_off = file_off + off + block_size;
+							if (find_flag <= 3){	// 順当な位置で見つけた場合
+								if ((tmp_next == short_next) && (tmp_off == short_off)){
+									// 予測済みのと一致するなら何もしない
+								} else if ((short_next >= 0) && (short2_next < 0)){	// 予測と異なるけど、別のが空いてるなら、そっちに記録する
+									//printf("short2_off = %I64d, short2_next = %d, file = %d\n", tmp_off, tmp_next, num);
+									short2_next = tmp_next;
+									short2_off = tmp_off;
+								} else {
+									if ((short_next >= 0) && (tmp_next == short2_next) && (tmp_off == short2_off)){	// 既に予測済みのと一致するなら入れ替える
+										short2_next = short_next;
+										short2_off = short_off;
+										//printf("exchange short2_off = %I64d, short2_next = %d\n", short2_off, short2_next);
+									}
+									//printf("short_off = %I64d, short_next = %d, file = %d\n", tmp_off, tmp_next, num);
+									short_next = tmp_next;
+									short_off = tmp_off;
+								}
+							} else if ((short_next < 0) &&
+									(((__int64)block_size * (__int64)(tmp_next - files[num].b_off) == tmp_off) ||
+									(tmp_off + s_blk[tmp_next].size == file_size))){
+								// 検出ブロックが順当でなくても、末尾ブロックの開始位置や末端がファイル・サイズに一致すれば
+								//printf("short_off = %I64d, short_next = %d, file = %d\n", tmp_off, tmp_next, num);
+								short_next = tmp_next;
+								short_off = tmp_off;
+							} else {
+								//printf("short2_off = %I64d, short2_next = %d, file = %d\n", tmp_off, tmp_next, num);
+								short2_next = tmp_next;
+								short2_off = tmp_off;
+							}
+						}
 						find_next = -1;
 					} else {
-						short_next = files[num].b_off + files[num].b_num - 1;	// 末尾ブロックの番号
+						tmp_next = files[num].b_off + files[num].b_num - 1;	// 末尾ブロックの番号
-						if (s_blk[short_next].size < block_size){	// 半端なブロックは別に調べる
+						if (s_blk[tmp_next].size < block_size){	// 半端なブロックは別に調べる
-							short_off = file_off + off + (__int64)(short_next - i) * (__int64)block_size;
+							tmp_off = file_off + off + (__int64)(tmp_next - i) * (__int64)block_size;
-							//printf("short_off = %I64d, short_next = %d, file = %d\n", short_off, short_next, num);
+							if (tmp_off + s_blk[tmp_next].size <= file_size){	// ファイル内に収まってる時だけ
+								if (find_flag <= 3){	// 順当な位置で見つけた場合
+									if ((tmp_next == short_next) && (tmp_off == short_off)){
+										// 予測済みのと一致するなら何もしない
+									} else if ((short_next >= 0) && (short2_next < 0)){	// 予測と異なるけど、別のが空いてるなら、そっちに記録する
+										//printf("far short2_off = %I64d, short2_next = %d, file = %d\n", tmp_off, tmp_next, num);
+										short2_next = tmp_next;
+										short2_off = tmp_off;
 									} else {
-							short_next = -1;
+										if ((short_next >= 0) && (tmp_next == short2_next) && (tmp_off == short2_off)){	// 既に予測済みのと一致するなら入れ替える
+											short2_next = short_next;
+											short2_off = short_off;
+											//printf("exchange short2_off = %I64d, short2_next = %d\n", short2_off, short2_next);
+										}
+										//printf("far short_off = %I64d, short_next = %d, file = %d\n", tmp_off, tmp_next, num);
+										short_next = tmp_next;
+										short_off = tmp_off;
+									}
+								} else if ((short_next < 0) &&
+										(((__int64)block_size * (__int64)(tmp_next - files[num].b_off) == tmp_off) ||
+										(tmp_off + s_blk[tmp_next].size == file_size))){
+									// 検出ブロックが順当でなくても、末尾ブロックの開始位置や末端がファイル・サイズに一致すれば
+									//printf("far short_off = %I64d, short_next = %d, file = %d\n", tmp_off, tmp_next, num);
+									short_next = tmp_next;
+									short_off = tmp_off;
+								} else if ((short2_next != tmp_next) || (short2_off != tmp_off)){
+									//printf("far short2_off = %I64d, short2_next = %d, file = %d\n", tmp_off, tmp_next, num);
+									short2_next = tmp_next;
+									short2_off = tmp_off;
+								}
+							}
 						}
 					}
 					tiny_skip = 0;	// 小さなファイルをブロック直後に一回だけ探す

source/par2j/version.h

@@ -1,2 +1,2 @@
-#define FILE_VERSION "1.3.3.2"	// ファイルのバージョン番号
+#define FILE_VERSION "1.3.3.3"	// ファイルのバージョン番号
 #define PRODUCT_VERSION "1.3.3"	// 製品のバージョン番号