This commit was generated by cvs2svn to compensate for changes in r2,

which included commits to RCS files with non-trunk default branches.

6 files changed, 2317 insertions, 0 deletions

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..abd3cf7
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,341 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6f12a66
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,41 @@
+#   xed - Simple hex editor
+#
+#   Copyright (C) 2005  Ian Cowburn (ianc@noddybox.demon.co.uk)
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the Free Software
+#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+#   -------------------------------------------------------------------------
+#
+#   $Id: Makefile,v 1.1.1.1 2005-05-04 01:12:19 ianc Exp $
+#
+
+# Alter this if required (for instance NCURSES is being used rather than
+# a local CURSES).
+#
+# You may also need to change #include <curses.h> to #include <ncurses.h>
+#
+LIBS=-lcurses -ltermcap
+
+OPTS=-g
+KEYFILE=xedkeys.h
+
+xed: xed.c xedkeys.h Makefile
+	$(CC) $(OPTS) -o xed xed.c $(LIBS)
+
+xed.txt: xed.1
+	nroff -man xed.1 | sed 's/.//g' > xed.txt
+
+clean:
+	-rm -f xed core xed.txt
diff --git a/README b/README
new file mode 100644
index 0000000..d69647c
--- /dev/null
+++ b/README
@@ -0,0 +1,25 @@
+Build instrcutions
+------------------
+
+Building xed should be fairly easy on most systems with a semblence of POSIX
+compliance as it doesn't use anything too flash.
+
+You should find in this archive :
+
+    Makefile	- makefile
+    xed.c	- The source
+    xedkeys.h	- The keys used.  Stored here for easier personalisation.
+    xed.1	- man page
+    xed.txt	- ASCII version of man page
+    README	- This file
+
+
+To build:
+
+	make
+
+Then copy xed to a directory on your PATH for ease of use.  man.1 can be
+installed in /usr/local/man/man1 or your system's equivalent.
+
+If the make fails, read Makefile for configuration info regarding
+curses/ncurses.
diff --git a/xed.1 b/xed.1
new file mode 100644
index 0000000..92323e9
--- /dev/null
+++ b/xed.1
@@ -0,0 +1,197 @@
+.TH xed 1
+.SH NAME
+xed \- CURSES based hex/ASCII file editor
+.SH SYNOPSIS
+.B xed
+[
+.B \-x
+] 
+[
+.B \-i
+] 
+[
+.B \-r
+] 
+[
+.B \-c
+] 
+[
+.B \-R
+] 
+.I filename
+.SH DESCRIPTION
+.B xed
+edits
+.I filename
+allowing individual bytes to be altered, either as hex or as ASCII.
+.SH OPTIONS
+.B xed
+accepts these switches
+.TP
+.B \-x
+Edit the file directly, rather than a memory based copy.  Certain commands are
+disabled if this switch is provided (see USAGE).
+.TP
+.B \-i
+Start off in insert mode.
+.TP
+.B \-r
+Start off in regular expression search mode.
+.TP
+.B \-c
+Start off in case insensitive search mode.
+.TP
+.B \-R
+Switch on read only mode (note this mode cannot be toggled whilst in
+.B xed
+).
+.SH USAGE
+.B xed
+is a simple hex and ASCII based file editor.  The display is made up of a
+banner, which describes the file being editted; the size of the file (in hex);
+the cursor position within the file (in hex); whether you are operating in
+overtype or insert mode; whether you are in simple string or regular 
+expression search mode and the case sensitivity of the search.
+.LP
+Below the banner is the editting area, with the file offset and hex listing on 
+the left, and the ASCII on the right.
+.LP
+.B xed
+operates within two modes when editting; hex and ASCII.  Below are
+the key commands valid in each mode.  Note that all the editting, saving and
+undo keys are ignored in read-only mode.
+.TP
+HEX MODE
+.TP 
+Cursors keys
+Move around file
+.TP
+h j k l
+As above
+.TP
+< , ^B
+Move back one page
+.TP
+> . ^F
+Move forward one page
+.TP
+s
+Save file (not valid in \-x mode)
+.TP
+TAB
+Switch to ASCII mode
+.TP
+$
+Move to the end of the file
+.TP
+^
+Move to the beginning of the file
+.TP
++
+Jump to a specified address  (Note this address defaults to decimal, but an hex
+address can be entered by prefixing the number with '0x', and an octal address
+by prefixing with '0')
+.TP
+R
+Restore byte from last saved/initial version (not valid in \-x mode)
+.TP
+q Q ^C
+Quit
+.TP
+1-9 a-f A-F
+Enter Hex value
+.TP
+^A
+Switch between overtype/insert (not valid in \-x mode)
+.TP
+^T
+Switch between normal/regular expression search mode
+.TP
+^K
+Switch between case sensitive/insensitive search mode
+.TP
+BS DEL
+Cancel after first hex digit is entered
+.TP
+x
+Delete character at cursor (not valid in \-x mode)
+.TP
+/
+Search.  In regular expression mode this will treat the file as a set of 
+text lines, each line terminated with a newline or NULL.
+.TP
+n
+Search next.  Note that this will perform the last search, regardless of any
+mode change to/from regular expression mode, though it will take account of
+changes to case sensitivity.
+.TP
+^R
+Redraw screen
+.TP
+ASCII MODE
+.TP
+Cursor keys
+Move around file
+.TP
+^H ^J ^K ^L
+As above
+.TP
+^B
+Move back one page
+.TP
+^F
+Move forward one page
+.TP
+TAB
+Switch to HEX mode
+.TP
+^A
+Switch between overtype/insert (not valid in \-x mode)
+.TP
+^X
+Delete character at cursor (not valid in \-x mode)
+.TP
+^R
+Redraw screen
+.TP
+^C
+Quit
+.SH ENVIRONMENT
+xed will process these environment variables if present
+.TP
+XEDARG
+Allows default arguments to be definied in the environment.  If this is set
+then invoking
+.B xed
+will be the same as invoking
+.B xed $XEDARG <arglist>
+.SH SEE ALSO
+.BR od (1)
+.BR grep (1)
+.BR curses (3)
+.BR regexp (3)
+.SH DIAGNOSTICS
+The diagnostics produced by
+.B xed
+are intended to be self-explanatory.
+.SH NOTES 
+Version 2.0 of
+.B xed
+includes these additions and fixes over 1.7 :
+.TP
+o
+Drastically tidied up code to enter the 1990's at least.
+.SH BUGS
+.TP
+o
+Even though the input routine tries it's best to mask them, pressing certain
+control keys (function keys, etc) while
+.B xed
+is waiting for the second hex digit when editting can send a string of
+unexpected commands to
+.B xed.
+This may result in your file being accidentally editted and saved.
+.TP
+o
+The display is half-inverted and sometimes corrupts on some HP-UX systems.  This
+is a bug in their curses implementation.
diff --git a/xed.c b/xed.c
new file mode 100644
index 0000000..64a5328
--- /dev/null
+++ b/xed.c
@@ -0,0 +1,1619 @@
+/*
+    xed - Simple hex editor
+
+    Copyright (C) 2005  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    -------------------------------------------------------------------------
+
+*/
+static const char id[]="$Id:";
+
+#include <sys/types.h>
+#include <curses.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <regex.h>
+#include <string.h>
+
+#include "xedkeys.h"
+
+#define	VERSION		"V2.0"
+#define USAGE		"[-x] [-i] [-r] [-c] [-R] file"
+
+#define NONE		0
+#define HEX		1
+#define ASCII		2
+#define REGEXP		3
+
+#define FILENAME_LEN	25
+
+#define GETSTR_LEN	80
+#define GETSTR_DISP_LEN	50
+
+#define BUFSIZE(x)	((((x)/1024)+1)*1024)
+
+#define CTYPE(func,c)   (((c>=0)&&(c<=255)) ? func(c) : (c))
+#define CTEST(func,c)   (((c>=0)&&(c<=255)) ? func(c) : (FALSE))
+
+#define IPBUFFSIZE	1024
+
+typedef unsigned char	uchar;
+
+char	*name;
+char	*filename;
+char	print_name[FILENAME_LEN+1];
+uchar	*edit;
+uchar	*mirror;
+long	bufsize;
+int	in_place=FALSE;
+int	regexp=FALSE;
+int	casesense=TRUE;
+int	readonly=FALSE;
+int	fd;
+long	file_len;
+long	page_ptr;
+long	file_ptr;
+long	end_page;
+long	page_depth;
+int	edit_hex=TRUE;
+int	overtype=TRUE;
+int	editted=FALSE;
+
+int	last_search=NONE;
+char	sch_str[GETSTR_LEN];
+int	sch_hex[128];
+int	sch_no;
+
+regex_t	re;
+int	re_alloc=FALSE;
+
+/* Function prototypes
+*/
+void	Err(const char *s);
+void	SysErr(const char *p);
+void	MainCode(void);
+int	HandleKey(int key);
+int	HandleKeyHex(int key);
+void	HandleKeyAscii(int key);
+int	CompileRegExp(void);
+void	SearchRegExp(void);
+void	DoSearchRegExp(void);
+void	SearchString(void);
+void	DoSearchString(void);
+void	SearchHex(void);
+void	DoSearchHex(void);
+int	Read(int fd, void *buff, int no);
+int	Write(int fd, void *buff, int no);
+void	OpenFile(void);
+void	SaveFile(void);
+int	CalcHex(int x[]);
+int	GetByte(long cur);
+char	*GetByteString(long *cur, int all_lower);
+int	GetLastSaved(long cur);
+void	Display(void);
+void	PartialDisplay(long cur, int x, int y);
+void	InsertValue(long p,long b);
+void	DeleteValue(long p);
+void	ReplaceValue(long p,long b);
+void	UpdateValue(long p, int b);
+void	ShowCursor(void);
+void	ShowPos(void);
+int	ScanKey(void);
+int	GetKey(int allkeys);
+void	GetString(char s[]);
+char	*Get(char *p);
+int	GetChar(char *p, char *v);
+void	Message(const char *fmt, ...);
+char	*Tail(char s[], int l);
+
+
+int main(int argc, char *argv[])
+{
+    char *env,*arg,*list[256];	/* If you're that prepared to break it, you */
+    int listc;			/* DESERVE to get a segmentation fault */
+    int src,dest,f;
+
+    name=argv[0];
+
+    /* Prepend XEDARG variable if present
+    */
+    src=0;
+    dest=0;
+    if (env=getenv("XEDARG"))
+    {
+	arg=strtok(env," \t");
+
+	while(arg)
+	{
+	    list[dest++]=arg;
+	    arg=strtok(NULL," \t");
+	}
+    }
+
+    for(f=1;f<argc;f++)
+    	list[dest++]=argv[f];
+
+    listc=dest;
+
+    if (listc<1)
+    {
+        fprintf(stderr,"%s:usage %s %s\n",name,name,USAGE);
+        exit(EXIT_FAILURE);
+    }
+
+    f=0;
+    while(*list[f]=='-')
+    {
+	switch (*(list[f]+1))
+	{
+	    case 'x':
+		in_place=TRUE;
+		break;
+	    case 'i':
+		overtype=FALSE;
+		break;
+	    case 'r':
+		regexp=TRUE;
+		break;
+	    case 'c':
+		casesense=FALSE;
+		break;
+	    case 'R':
+		readonly=TRUE;
+		break;
+	    default:
+		fprintf(stderr,"%s:usage %s %s\n",name,name,USAGE);
+		exit(EXIT_FAILURE);
+		break;
+	}
+	f++;
+
+	if (f==listc)
+	{
+	    fprintf(stderr,"%s:usage %s %s\n",name,name,USAGE);
+	    exit(EXIT_FAILURE);
+	}
+    }
+
+    filename=list[f];
+
+    strcpy(print_name,Tail(filename,FILENAME_LEN));
+
+    signal(SIGINT,SIG_IGN);
+
+    initscr();
+    cbreak();
+    noecho();
+    keypad(stdscr,TRUE);
+
+    MainCode();
+
+    erase();
+    refresh();
+
+    if (in_place)
+        if (close(fd)==-1)
+            SysErr(filename);
+
+    endwin();
+
+    return EXIT_SUCCESS;
+}
+
+
+void Err(const char *s)
+{
+    endwin();
+
+    fprintf(stderr,"%s: %s\n",name,s);
+    exit(EXIT_FAILURE);
+}
+
+
+void SysErr(const char *p)
+{
+    endwin();
+
+    if (p)
+	perror(p);
+    else
+	perror(name);
+
+    exit(EXIT_FAILURE);
+}
+
+
+void MainCode(void)
+{
+    char errstr[80];
+    int quit=FALSE;
+    int ch;
+
+    if (COLS<80)
+    {
+	sprintf
+	    (errstr,
+		"Terminal width (%d) less than required minimum (80)",COLS);
+        Err(errstr);
+    }
+
+    if (LINES<10)
+    {
+	sprintf
+	    (errstr,
+		"Terminal depth (%d) less than required minimum (10)",LINES);
+        Err(errstr);
+    }
+
+    OpenFile();
+
+    file_ptr=page_ptr=0L;
+
+    Display();
+
+    Message(VERSION);
+    ShowCursor();
+
+    while(!quit)
+    {
+        switch (HandleKey(GetKey(TRUE)))
+	{
+            case FALSE:
+                if ((editted)&&(!in_place))
+		{
+                    ch=GetChar
+                        ("File has been editted.  Quit (y/[n])?","yYnN\n");
+
+                    if ((ch=='y')||(ch=='Y'))
+                        quit=TRUE;
+		}
+                else
+                    quit=TRUE;
+
+                break;
+            case TRUE:
+                break;
+	}
+    }
+}
+
+
+int HandleKey(int key)
+{
+    int finished;
+
+    if (edit_hex)
+    {
+        HandleKeyHex(key);
+        return ((key!='q')&&(key!='Q')&&(key!=3));
+    }
+    else
+    {
+        HandleKeyAscii(key);
+        return (key!=3);
+    }
+}
+
+
+int HandleKeyHex(int key)
+{
+    char *s;
+    int hex[2],next_key,old_val;
+    int ch;
+
+    switch(key)
+    {
+        case CURS_UP1:
+        case CURS_UP2:
+            if (file_ptr>15)
+	    {
+                file_ptr-=16;
+
+                if (file_ptr<page_ptr)
+		{
+                    page_ptr-=16;
+
+                    if (page_ptr<0)
+                        page_ptr=0;
+
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case CURS_LEFT1:
+        case CURS_LEFT2:
+            if (file_ptr)
+	    {
+                file_ptr--;
+
+                if (file_ptr<page_ptr)
+		{
+                    page_ptr-=16;
+
+                    if (page_ptr<0)
+                        page_ptr=0;
+
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case CURS_DOWN1:
+        case CURS_DOWN2:
+        case '\n':
+            if (file_ptr<(file_len-1))
+	    {
+                file_ptr+=16;
+
+		if (file_ptr>(file_len-1))
+		    file_ptr=file_len-1;
+
+                if (file_ptr>end_page)
+		{
+                    page_ptr+=16;
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case CURS_RIGHT1:
+        case CURS_RIGHT2:
+            if (file_ptr<(file_len-1))
+	    {
+                file_ptr++;
+
+                if (file_ptr>end_page)
+		{
+                    page_ptr+=16;
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case PAGE_BACK1:
+        case PAGE_BACK2:
+        case PAGE_BACK3:
+            if (file_ptr>=page_depth)
+	    {
+                page_ptr-=page_depth;
+
+                if (page_ptr<0)
+                    page_ptr=0;
+
+                file_ptr-=page_depth;
+
+                Display();
+	    }
+            break;
+
+        case PAGE_FWD1:
+        case PAGE_FWD2:
+        case PAGE_FWD3:
+            if (page_ptr<=file_len-page_depth-1)
+	    {
+                page_ptr+=page_depth;
+
+                file_ptr+=page_depth;
+
+		if (file_ptr>(file_len-1))
+		    file_ptr=file_len-1;
+
+                Display();
+	    }
+            break;
+
+        case SWITCH_TO_ASCII:
+            edit_hex=FALSE;
+            ShowCursor();
+            break;
+
+        case START_OF_FILE:
+            page_ptr=file_ptr=0L;
+            Display();
+            break;
+
+        case END_OF_FILE:
+            page_ptr=file_len-page_depth;
+
+            if (page_ptr<0)
+                page_ptr=0;
+
+            file_ptr=file_len-1;
+            Display();
+            break;
+
+        case JUMP_TO:
+            s=Get("Address to jump to (prefix with 0x for hex) : ");
+
+            page_ptr=strtol(s,(char **)NULL,0);
+
+            if (page_ptr<0)
+                page_ptr=0;
+
+            if (page_ptr>=file_len)
+                page_ptr=file_len-1;
+
+            file_ptr=page_ptr;
+
+            if ((page_ptr>file_len-page_depth)&&(page_depth<file_len))
+	    {
+                page_ptr=file_len-page_depth;
+
+                if (page_ptr<0)
+                    page_ptr=0;
+	    }
+
+            Display();
+
+            break;
+
+        case SAVE:
+	    if (!readonly)
+	    {
+		if (!in_place)
+		{
+		    SaveFile();
+
+		    editted=FALSE;
+		}
+		else
+		    Message("All changes already saved in -x mode!");
+	    }
+	    else
+		Message("File is read-only!");
+
+            ShowCursor();
+            break;
+
+        case RESTORE_BYTE:
+	    if (!readonly)
+	    {
+		if (!in_place)
+		{
+		    if (file_len)
+		    {
+			ReplaceValue
+				(file_ptr,(uchar)GetLastSaved(file_ptr));
+
+			if (file_ptr<(file_len)-1)
+			{
+			    file_ptr++;
+
+			    if (file_ptr>end_page)
+			    {
+				page_ptr+=16;
+				Display();
+			    }
+			    else
+				ShowCursor();
+			}
+		    }
+		}
+		else
+		    Message("Can't recover in -x mode!");
+	    }
+	    else
+		Message("File is read-only!");
+
+            ShowCursor();
+            break;
+
+        case REFRESH:
+            Display();
+            break;
+
+        case INSERT_TOGGLE:
+	    if (!readonly)
+		if (in_place)
+		{
+		    Message("no insert/delete in -x mode");
+		    ShowCursor();
+		}
+		else
+		{
+		    overtype=!overtype;
+		    ShowPos();
+		    ShowCursor();
+		}
+            break;
+
+        case DELETE_CHAR:
+	    if (!readonly)
+	    {
+		if (in_place)
+		    Message("no insert/delete in -x mode");
+		else
+		    if (file_len)
+		    {
+			editted=TRUE;
+
+			DeleteValue(file_ptr);
+
+			if ((file_ptr>=file_len)&&(file_len))
+			    if (--file_ptr<page_ptr)
+				page_ptr=file_ptr;
+
+			Display();
+		    }
+	    }
+	    else
+		Message ("File is read-only!");
+
+	    ShowCursor();
+            break;
+
+        case FIND_STRING:
+	    if (!regexp)
+	    {
+		ch=GetChar("(S)tring or (N)umber search ? ","sSnN\n");
+
+		if ((ch=='N')||(ch=='n'))
+		{
+		    SearchHex();
+		    Display();
+		}
+		else
+		{
+		    if ((ch=='S')||(ch=='s'))
+		    {
+			SearchString();
+			Display();
+		    }
+		    else
+			ShowCursor();
+		}
+	    }
+	    else
+	    {
+		SearchRegExp();
+
+		if (last_search==REGEXP)
+		    Display();
+		else
+		    ShowCursor();
+	    }
+
+            break;
+
+        case FIND_NEXT:
+	    switch (last_search)
+	    {
+            	case NONE:
+		    Message("No previous search!");
+		    ShowCursor();
+                    break;
+                case HEX:
+                    DoSearchHex();
+                    Display();
+                    break;
+                case ASCII:
+		    DoSearchString();
+		    Display();
+                    break;
+		case REGEXP:
+		    DoSearchRegExp();
+		    Display();
+                    break;
+	    }
+            break;
+
+	case FIND_TYPE:
+	    regexp=!regexp;
+            ShowCursor();
+	    break;
+
+	case FIND_CASE:
+	    casesense=!casesense;
+
+	    if (last_search==REGEXP)
+		CompileRegExp();
+
+            ShowCursor();
+	    break;
+
+        default:
+	    if (!readonly)
+	    {
+		if (CTEST(isxdigit,key))
+		{
+		    old_val=GetByte(file_ptr);
+
+		    hex[0]=CTYPE(toupper,key);
+
+		    addch(hex[0]);
+		    refresh();
+
+		    next_key=GetKey(FALSE);
+
+		    while ((!CTEST(isxdigit,next_key))&&
+				    (next_key!=8)&&(next_key!=127))
+			next_key=GetKey(FALSE);
+
+		    hex[1]=CTYPE(toupper,next_key);
+
+		    if (CTEST(isxdigit,next_key))
+		    {
+			editted=TRUE;
+
+			UpdateValue(file_ptr,CalcHex(hex));
+
+			/* Special case for the first char in an empty file */
+			if (file_len==0)
+			    file_len=1;
+
+			if (file_ptr<(file_len)-1)
+			{
+			    file_ptr++;
+
+			    if (file_ptr>end_page)
+			    {
+				page_ptr=file_ptr;
+				Display();
+			    }
+			    else
+				ShowCursor();
+			}
+			else
+			    ShowCursor();
+		    }
+		    else
+		    {
+			if (!overtype)
+			    ReplaceValue(file_ptr,old_val);
+			else
+			    UpdateValue(file_ptr,old_val);
+
+			ShowCursor();
+		    }
+		}
+	    }
+            break;
+    }
+}
+
+
+void HandleKeyAscii(int key)
+{
+    switch(key)
+    {
+        case ASC_CURS_UP1:
+        case ASC_CURS_UP2:
+            if (file_ptr>15)
+	    {
+                file_ptr-=16;
+
+                if (file_ptr<page_ptr)
+		{
+                    page_ptr-=16;
+
+                    if (page_ptr<0)
+                        page_ptr=0;
+
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case ASC_CURS_LEFT1:
+        case ASC_CURS_LEFT2:
+            if (file_ptr)
+	    {
+                file_ptr--;
+
+                if (file_ptr<page_ptr)
+		{
+                    page_ptr-=16;
+
+                    if (page_ptr<0)
+                        page_ptr=0;
+
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case ASC_CURS_DOWN1:
+        case ASC_CURS_DOWN2:
+            if (file_ptr<(file_len-1))
+	    {
+                file_ptr+=16;
+
+		if (file_ptr>(file_len-1))
+		    file_ptr=file_len-1;
+
+                if (file_ptr>end_page)
+		{
+                    page_ptr+=16;
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case ASC_CURS_RIGHT1:
+        case ASC_CURS_RIGHT2:
+            if (file_ptr<(file_len)-1)
+	    {
+                file_ptr++;
+
+                if (file_ptr>end_page)
+		{
+                    page_ptr+=16;
+                    Display();
+		}
+                else
+                    ShowCursor();
+	    }
+            break;
+
+        case ASC_PAGE_BACK:
+            if (file_ptr>=page_depth)
+	    {
+                page_ptr-=page_depth;
+
+                if (page_ptr<0)
+                    page_ptr=0;
+
+                file_ptr-=page_depth;
+
+                Display();
+	    }
+            break;
+
+        case ASC_PAGE_FWD:
+            if (page_ptr<=file_len-page_depth-1)
+	    {
+                page_ptr+=page_depth;
+
+                file_ptr+=page_depth;
+
+		if (file_ptr>(file_len-1))
+		    file_ptr=file_len-1;
+
+                Display();
+	    }
+            break;
+
+        case ASC_REFRESH:
+            Display();
+            break;
+
+        case SWITCH_TO_HEX:
+            edit_hex=TRUE;
+            ShowCursor();
+            break;
+
+        case INSERT_TOGGLE:
+	    if (!readonly)
+		if (in_place)
+		{
+		    Message("no insert/delete in -x mode");
+		    ShowCursor();
+		}
+		else
+		{
+		    overtype=!overtype;
+		    ShowPos();
+		    ShowCursor();
+		}
+            break;
+
+        case ASC_DELETE_CHAR:
+	    if (!readonly)
+	    {
+		if (in_place)
+		    Message("no insert/delete in -x mode");
+		else
+		    if (file_len)
+		    {
+			DeleteValue(file_ptr);
+
+			if ((file_ptr>=file_len)&&(file_len))
+			    if (--file_ptr<page_ptr)
+				page_ptr=file_ptr;
+
+			Display();
+		    }
+	    }
+	    else
+		Message ("File is read-only!");
+
+	    ShowCursor();
+            break;
+
+        default:
+	    if (!readonly)
+		if (CTEST(isprint,key))
+		{
+		    editted=TRUE;
+
+		    UpdateValue(file_ptr,key);
+
+		    /* Special case for the first char in an empty file */
+		    if (file_len==0)
+			file_len=1;
+
+		    if (file_ptr<(file_len)-1)
+		    {
+			file_ptr++;
+
+			if (file_ptr>end_page)
+			{
+			    page_ptr=file_ptr;
+			    Display();
+			}
+			else
+			    ShowCursor();
+		    }
+		    else
+			ShowCursor();
+		}
+            break;
+    }
+}
+
+int CompileRegExp(void)
+{
+    char buff[80];
+    int ret;
+
+    if (re_alloc)
+	regfree(&re);
+
+    re_alloc=FALSE;
+
+    if (casesense)
+	ret=regcomp(&re,sch_str,REG_EXTENDED|REG_NEWLINE);
+    else
+	ret=regcomp(&re,sch_str,REG_EXTENDED|REG_ICASE|REG_NEWLINE);
+
+    if(ret!=0)
+    {
+	regerror(ret,&re,buff,80);
+	Message ("RE error : %s",buff);
+	return (FALSE);
+    }
+
+    re_alloc=TRUE;
+
+    return TRUE;
+}
+
+void SearchRegExp(void)
+{
+    last_search=NONE;
+
+    strcpy(sch_str,Get("/"));
+
+    if (!strlen(sch_str))
+        return;
+
+    if (CompileRegExp())
+    {
+	last_search=REGEXP;
+	DoSearchRegExp();
+    }
+}
+
+void DoSearchRegExp(void)
+{
+    char *p;
+    long f,of;
+    regmatch_t re_match;
+
+    Message("Searching....");
+
+    f=file_ptr+1;
+
+    of=f;
+    p=GetByteString(&f,!casesense);
+    while(p)
+    {
+	if (regexec(&re,p,1,&re_match,0)==0)
+	{
+	    file_ptr=of+re_match.rm_so;
+
+	    if ((file_ptr<page_ptr)||(file_ptr>end_page))
+		page_ptr=file_ptr;
+
+	    free(p);
+	    return;
+	}
+
+	free(p);
+	of=f;
+	p=GetByteString(&f,!casesense);
+    }
+
+    Message("Not found.  Press a key.");
+    GetKey(TRUE);
+    Message("");
+}
+
+
+void SearchString(void)
+{
+    last_search=NONE;
+
+    strcpy(sch_str,Get("Search string : "));
+
+    if (!strlen(sch_str))
+        return;
+
+    last_search=ASCII;
+
+    DoSearchString();
+}
+
+
+void DoSearchString(void)
+{
+    long f;
+    int l,r;
+
+    Message("Searching....");
+
+    l=strlen(sch_str);
+
+    for(f=file_ptr+1;f<file_len-l+1;f++)
+    {
+        for(r=0;r<l;r++)
+	    if (casesense)
+	    {
+		if (GetByte(f+r)!=sch_str[r])
+		    r=l+1;
+	    }
+	    else
+	    {
+		if (tolower(GetByte(f+r))!=tolower(sch_str[r]))
+		    r=l+1;
+	    }
+
+        if (r==l)
+	{
+            file_ptr=f;
+
+            if ((file_ptr<page_ptr)||(file_ptr>end_page))
+                page_ptr=file_ptr;
+
+            return;
+	}
+    }
+
+    Message("Not found.  Press a key.");
+    GetKey(TRUE);
+    Message("");
+}
+
+
+void SearchHex(void)
+{
+    char *s;
+
+    last_search=NONE;
+    sch_no=0;
+
+    s=Get("Enter First number (return to quit) : ");
+
+    while(*s)
+    {
+        sch_hex[sch_no++]=(int)strtol(s,(char **)NULL,0);
+        s=Get("Enter next number (return to finish) : ");
+    }
+
+    if (!sch_no)
+        return;
+
+    last_search=HEX;
+
+    DoSearchHex();
+}
+
+
+void DoSearchHex(void)
+{
+    int f,r;
+
+    Message("Searching....");
+
+    for(f=file_ptr+1;f<file_len-sch_no+1;f++)
+    {
+        for(r=0;r<sch_no;r++)
+            if (GetByte(f+r)!=sch_hex[r])
+                r=sch_no+1;
+
+        if (r==sch_no)
+	{
+            file_ptr=f;
+
+            if ((file_ptr<page_ptr)||(file_ptr>end_page))
+                page_ptr=file_ptr;
+
+            return;
+	}
+    }
+
+    Message("Not found.  Press a key");
+    GetKey(TRUE);
+    Message("");
+}
+
+
+/* Provide a skin to read(2) and write(2)
+*/
+int Read(int fd, void *buff, int no)
+{
+    int tot,rd;
+
+    tot=0;
+    while(tot<no)
+    {
+	rd=read(fd,buff+tot,no-tot);
+
+	/* If we read zero bytes, it's probably the end of the file.
+	*/
+	if (rd==0)
+	    return tot;
+
+	/* Reading -1 leaves little room for argument!
+	*/
+	if (rd==-1)
+	    return -1;
+
+	tot+=rd;
+    }
+
+    return tot;
+}
+
+
+int Write(int fd, void *buff, int no)
+{
+    int tot,wr;
+
+    tot=0;
+    while(tot<no)
+    {
+	wr=write(fd,buff+tot,no-tot);
+
+	if ((wr==-1)||(wr==0))
+	    return -1;
+
+	tot+=wr;
+    }
+
+    return tot;
+}
+
+
+void OpenFile(void)
+{
+    if (readonly)
+    {
+	if ((fd=open(filename,O_RDONLY))==-1)
+	    SysErr(filename);
+    }
+    else
+    {
+	if ((fd=open(filename,O_RDWR))==-1)
+	    SysErr(filename);
+    }
+
+    if ((file_len=lseek(fd,0L,SEEK_END))==-1)
+	SysErr(filename);
+
+    lseek(fd,0L,SEEK_SET);
+
+    if (!in_place)
+    {
+        if (!(edit=(uchar *)malloc(bufsize=BUFSIZE(file_len))))
+            SysErr(NULL);
+
+        if (!(mirror=(uchar *)malloc(bufsize)))
+            SysErr(NULL);
+
+        if (Read(fd,edit,file_len)!=file_len)
+            SysErr(filename);
+
+        memcpy(mirror,edit,file_len);
+
+        close(fd);
+    }
+}
+
+
+void SaveFile(void)
+{
+    Message("Writing...");
+
+    if((fd=open(filename,O_WRONLY|O_TRUNC))==-1)
+        SysErr(filename);
+
+    if (Write(fd,edit,file_len)!=file_len)
+        SysErr(filename);
+
+    close(fd);
+
+    memcpy(mirror,edit,file_len);
+
+    Message("Done");
+}
+
+
+int CalcHex(int x[])
+{
+    static char hex_digits[]="0123456789ABCDEF";
+
+    int h,l;
+
+    for(h=0;(h<16)&&(x[0]!=hex_digits[h]);h++);
+    for(l=0;(l<16)&&(x[1]!=hex_digits[l]);l++);
+
+    if ((h==16)||(l==16))
+        Err("CalcHex() broken!");
+
+    return(h*16+l);
+}
+
+
+int GetByte(long cur)
+{
+    static uchar ipbuff[IPBUFFSIZE];
+    static long buffpos;
+    static int first_read=TRUE;
+    uchar c;
+
+    if (cur>=file_len)
+        return -1;
+
+    if(!in_place)
+        return edit[cur];
+
+    if (first_read)
+	first_read=FALSE;
+    else
+	if ((cur>=buffpos)&&(cur<buffpos+IPBUFFSIZE))
+	    return ipbuff[cur-buffpos];
+
+    if (lseek(fd,cur,SEEK_SET)==-1)
+    	SysErr(filename);
+
+    if(Read(fd,ipbuff,IPBUFFSIZE)==-1)
+        SysErr(filename);
+
+    buffpos=cur;
+
+    return ipbuff[cur-buffpos];
+}
+
+
+char *GetByteString(long *cur, int all_lower)
+{
+    char *p;
+    long l,cp;
+    int b;
+
+    cp=*cur;
+
+    if (cp>=file_len)
+        return NULL;
+
+    l=0;
+
+    while(((b=GetByte(cp++))!=-1)&&(b!=0)&&(b!='\n'))
+	l++;
+
+    if (!l)
+    {
+	if (!(p=(char *)malloc(0x1)))
+	    SysErr(NULL);
+	*p=0;
+	*cur+=1;
+	return p;
+    }
+
+    if (!(p=(char *)malloc((int)l+1)))
+	SysErr(NULL);
+
+    for(cp=0;cp<l;cp++)
+	*(p+cp)=(all_lower) ? (tolower(GetByte((*cur)+cp))) :
+					    (GetByte((*cur)+cp));
+
+    *(p+cp)=0;
+
+    *cur+=l+1;
+
+    return p;
+}
+
+
+int GetLastSaved(long cur)
+{
+    return (int)mirror[cur];
+}
+
+
+void Display(void)
+{
+    int r,f,b;
+    long cur;
+
+    erase();
+
+    mvprintw(0,0,"File : %s",print_name);
+
+    r=3;
+    cur=page_ptr;
+
+    while(r<LINES-3)
+    {
+        mvprintw(r,0,"%8.8X :",cur);
+
+        for(f=0;f<16;f++)
+            if ((b=GetByte(cur++))==-1)
+                mvaddstr(r,11+f*3,"**");
+            else
+	    {
+                mvprintw(r,11+f*3,"%2.2X",(uchar)b);
+
+                if ((b<32)||(b>126))
+                    mvaddch(r,62+f,(chtype)'.');
+                else
+                    mvaddch(r,62+f,(chtype)b);
+	    }
+        r++;
+    }
+
+    end_page=cur-1;
+    page_depth=end_page-page_ptr+1;
+
+    ShowCursor();
+}
+
+
+void PartialDisplay(long cur, int x, int y)
+{
+    int r,f,b;
+
+    r=y;
+
+    while(r<LINES-3)
+    {
+        if (!x)
+            mvprintw(r,0,"%8.8X :",cur);
+
+        for(f=x;f<16;f++)
+            if ((b=GetByte(cur++))==-1)
+                mvaddstr(r,11+f*3,"**");
+            else
+	    {
+                mvprintw(r,11+f*3,"%2.2X",(uchar)b);
+
+                if ((b<32)||(b>126))
+                    mvaddch(r,62+f,(chtype)'.');
+                else
+                    mvaddch(r,62+f,(chtype)b);
+	    }
+
+        x=0;
+        r++;
+    }
+}
+
+
+void InsertValue(long p,long b)
+{
+    if (++file_len>bufsize)
+        {
+        if (!(edit=(uchar *)realloc(edit,(bufsize=BUFSIZE(file_len)))))
+            SysErr(NULL);
+
+        if (!(mirror=(uchar *)realloc(mirror,bufsize)))
+            SysErr(NULL);
+        }
+
+    memmove(edit+p+1,edit+p,file_len-p-1);
+    memmove(mirror+p+1,mirror+p,file_len-p-1);
+
+    edit[p]=(uchar)b;
+    mirror[p]=(uchar)b;
+}
+
+
+void DeleteValue(long p)
+{
+    if (file_len>1)
+    {
+        memmove(edit+p,edit+p+1,file_len-p-1);
+        memmove(mirror+p,mirror+p+1,file_len-p-1);
+
+        file_len--;
+    }
+    else
+        file_len=0;
+}
+
+
+void ReplaceValue(long p,long b)
+{
+    int x,y;
+    uchar c=b;
+
+    edit[p]=(uchar)b;
+
+    y=3+(p-page_ptr)/16;
+    x=(p-page_ptr)%16;
+
+    mvprintw(y,11+x*3,"%2.2X",(uchar)b);
+
+    if ((b<32)||(b>126))
+        mvaddch(y,62+x,(chtype)'.');
+    else
+        mvaddch(y,62+x,(chtype)b);
+}
+
+
+void UpdateValue(long p, int b)
+{
+    int x,y;
+    uchar c=b;
+
+    if (!in_place)
+    {
+        if (overtype)
+            edit[p]=(uchar)b;
+        else
+            InsertValue(p,b);
+    }
+    else
+    {
+        lseek(fd,p,SEEK_SET);
+        if (Write(fd,&c,1)==-1)
+            SysErr(filename);
+    }
+
+    y=3+(p-page_ptr)/16;
+    x=(p-page_ptr)%16;
+
+    if (overtype)
+    {
+        mvprintw(y,11+x*3,"%2.2X",(uchar)b);
+
+        if ((b<32)||(b>126))
+            mvaddch(y,62+x,(chtype)'.');
+        else
+            mvaddch(y,62+x,(chtype)b);
+    }
+    else
+        PartialDisplay(p,x,y);
+}
+
+
+void ShowCursor(void)
+{
+    int x,y;
+
+    ShowPos();
+
+    y=(file_ptr-page_ptr)/16;
+    x=(file_ptr-page_ptr)%16;
+
+    if (edit_hex)
+        move(3+y,11+x*3);
+    else
+        move(3+y,62+x);
+
+    refresh();
+}
+
+
+void ShowPos(void)
+{
+    mvprintw(1,0,"Pos : %8.8x",file_ptr);
+    mvprintw(0,40,"File size : %8.8x",file_len);
+
+    /* Print Status line */
+    if (readonly)
+	mvaddstr(1,20,"READ ONLY");
+    else
+	if (overtype)
+	    mvaddstr(1,20,"OVERTYPE");
+	else
+	    mvaddstr(1,20," INSERT ");
+
+    if (regexp)
+        mvaddstr(1,37,"REGEXP SEARCH");
+    else
+        mvaddstr(1,37,"STRING SEARCH");
+
+    if (casesense)
+	mvaddstr(1,57," CASE SENSITIVE ");
+    else
+	mvaddstr(1,57,"CASE INSENSITIVE");
+}
+
+
+int ScanKey(void)
+{
+    int k;
+
+    k=getch();
+
+    if (k==KEY_BACKSPACE)
+	k=8;
+
+    if (k==ERR)
+	k=3;
+
+    /* Message("Read key %9d",k); */
+
+    return k;
+}
+
+
+int GetKey(int allkeys)
+{
+    int k;
+
+    k=ScanKey();
+
+    if (!allkeys)
+	while(!CTEST(isascii,k))
+	    k=ScanKey();
+
+    return k;
+}
+
+
+void GetString(char s[])
+{
+    int k,done,p,x,y;
+
+    done=FALSE;
+    p=0;
+    s[p]=0;
+    getyx(stdscr,y,x);
+
+    while(!done)
+    {
+	mvprintw(y,x,"%-*.*s",GETSTR_DISP_LEN,GETSTR_DISP_LEN,
+						Tail(s,GETSTR_DISP_LEN));
+
+	move(y,x+((p>=GETSTR_DISP_LEN) ? (GETSTR_DISP_LEN) : (p)));
+
+	refresh();
+
+	switch (k=GetKey(TRUE))
+	{
+	    case 8:
+	    case 127:
+		if (p)
+		    s[--p]=0;
+		break;
+
+	    case 3:
+		strcpy(s,"");
+		done=TRUE;
+		break;
+
+	    case '\n':
+		done=TRUE;
+		break;
+
+	    default:
+		if (p<GETSTR_LEN-1)
+		{
+		    s[p++]=(char)k;
+		    s[p]=0;
+		}
+		else
+		    flash();
+	}
+    }
+}
+
+
+char *Get(char *p)
+{
+    static char s[GETSTR_LEN];
+    int f;
+
+    Message(p);
+
+    echo();
+    GetString(s);
+    noecho();
+
+    return s;
+}
+
+
+int GetChar(char *p, char *v)
+{
+    int f,ch=0xff;
+
+    Message(p);
+
+    while(!strchr(v,ch))
+        ch=GetKey(TRUE);
+
+    ShowCursor();
+
+    return ch;
+}
+
+
+void Message(const char *fmt, ...)
+{
+    va_list arg;
+    int f;
+
+    move(LINES-1,0);
+
+    for(f=0;f<COLS-2;f++)
+        addch(' ');
+
+    va_start(arg,fmt);
+    mvwprintw(stdscr,LINES-1,0,fmt,arg);
+    va_end(arg);
+
+    refresh();
+}
+
+
+char *Tail(char s[], int l)
+{
+    static char ret[1024];
+    int sl,d;
+
+    if(strlen(s)<=l)
+        strcpy(ret,s);
+    else
+        {
+        sl=strlen(s);
+        d=l;
+
+        while(d>-1)
+            ret[d--]=s[sl--];
+
+	ret[0]='.';
+	ret[1]='.';
+        }
+
+    return ret;
+}
+
+
+/* END OF FILE */
diff --git a/xedkeys.h b/xedkeys.h
new file mode 100644
index 0000000..6ecd189
--- /dev/null
+++ b/xedkeys.h
@@ -0,0 +1,94 @@
+/*
+    xed - Simple hex editor
+
+    Copyright (C) 2005  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    -------------------------------------------------------------------------
+
+    Include file detailing the keys in xed
+
+    $Id$
+*/
+
+#ifndef XEDKEYS_H
+#define XEDKEYS_H
+
+/* To define control codes */
+#define CNTL(x)             	((x)-'@')
+
+/* Keys valid in HEX mode */
+
+#define CURS_UP1		KEY_UP
+#define CURS_UP2		'k'
+#define CURS_DOWN1		KEY_DOWN
+#define CURS_DOWN2		'j'
+#define CURS_LEFT1		KEY_LEFT
+#define CURS_LEFT2		'h'
+#define CURS_RIGHT1		KEY_RIGHT
+#define CURS_RIGHT2		'l'
+
+#define PAGE_FWD1		'>'
+#define PAGE_FWD2		'.'
+#define PAGE_FWD3		CNTL('F')
+
+#define PAGE_BACK1		'<'
+#define PAGE_BACK2		','
+#define PAGE_BACK3		CNTL('B')
+
+#define SWITCH_TO_ASCII		'\t'
+
+#define START_OF_FILE		'^'
+#define END_OF_FILE		'$'
+#define JUMP_TO			'+'
+
+#define SAVE			's'
+
+#define RESTORE_BYTE		'R'
+
+#define REFRESH			CNTL('R')
+
+#define INSERT_TOGGLE		CNTL('A')
+
+#define DELETE_CHAR		'x'
+
+#define FIND_STRING		'/'
+#define FIND_NEXT		'n'
+#define FIND_TYPE		CNTL('T')
+#define FIND_CASE		CNTL('K')
+
+
+/* Keys valid in ASCII mode */
+
+#define ASC_CURS_UP1		KEY_UP
+#define ASC_CURS_UP2		CNTL('K')
+#define ASC_CURS_DOWN1		KEY_DOWN
+#define ASC_CURS_DOWN2		CNTL('J')
+#define ASC_CURS_LEFT1		KEY_LEFT
+#define ASC_CURS_LEFT2		CNTL('H')
+#define ASC_CURS_RIGHT1		KEY_RIGHT
+#define ASC_CURS_RIGHT2		CNTL('L')
+
+#define ASC_PAGE_FWD		CNTL('F')
+#define ASC_PAGE_BACK		CNTL('B')
+
+#define ASC_REFRESH		(REFRESH)
+
+#define SWITCH_TO_HEX		(SWITCH_TO_ASCII)
+
+#define ASC_DELETE_CHAR		CNTL('X')
+
+#endif