Gjots Manual

Contents


Contents


1. GJOTS MANUAL




                    g j o t s
	


                         By

                 Bob Hepple, 
                 Brisbane
                 Queensland
                 Australia

                 Version 0.8

If you like this program, please send me an email - then I'll be 
much more motivated to improve it!

      bhepple@freeshell.org
      http://bhepple.freeshell.org/gjots

Sad but necessary guarantee - I hereby promise not to 
mis-use your email details - I won't put you on a mailing list 
and I won't sell or provide your address to any other party, 
blah blah

Contents


2. Introduction


gjots is a fairly simple but very lightweight (fast) jotter 
application for your desktop.

Why do we need yet another jotter program? Well, when my 
faithful old Psion-5 organiser died I needed to move all my 
bits and pieces onto Linux and I started to look around for 
software to fill that need. I found lots of software for diary 
(ical is good and an old friend, but I might look at 
gnome-pim) and I already wrote a beaut calculator (gdcalc) 
but somehow nothing was quite right for the jotter.

Other packages that I looked at were either:

* much too simplistic (eg. a single level hierarchy), 
* too complex (too many components like Corba, SQL or 
  suchlike)
* web based
* unable to display & work on the tree at the same time as 
  the text entries
* too messy - throwing windows up like 3M yellow stickers 
  all over the screen

Then there were the ones I couldn't get to work or which just
plain bombed. 

There are many fine packages around and kjots seems to be 
the best of the lot but none really suited my needs. Anyhow,
I needed to learn how to do GTK trees and so here we are.

Like Goldilocks said about the chairs, porridge and beds, 
gjots is "just right". 

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3. Pre-requisites


gjots is developed on RedHat Linux 7.3 for i386 but should run on
any RPM-based Linux. It uses gtk+1.2 which is pretty well
universal at the moment.

ccrypt (http://ccrypt.sourceforge.net/) is needed for working
with encrypted files.

Please advise of success in running on any other platform:

debian?
slackware?
sparc?
other hw?

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4. Installing


Easiest is from a binary rpm and then you don't need to
think about it (provided you are using an Intel ix86-based
Linux that can install RPM's).

Otherwise if installing from the tarball by hand there is only a
single binary to install, namely gjots, and the gjots2html,
docbook2gjots and gjots2docbook scripts which should go somewhere
on your $PATH, perhaps /usr/local/bin

The documentation file readme.gjots can go in
/usr/share/doc/gjots-0.X and the man pages gjots.1, gjots2html,
docbook2gjots.1 and gjots2docbook.1 should go somewhere that
man(1) can find it, perhaps /usr/local/man/man1 or
/usr/share/man/man1

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5. Building from source


The usual. From the tar ball do:

./configure
glade -w gjots.glade
make
make install

Also, rpm builds should work too if working from a source 
rpm.
   
gjots was written with glade so you will need this to hack on it.

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6. Contributing


Bug fixes are very welcome!

If anyone wants to translate this into another language 
please get in touch and I will provide an internationalised 
version and message catalogs.

I will incorporate any new features that people want to 
contribute provided I like them too. If you want to add 
something to the mainstream development please drop me a 
line first and I will make sure no-one else is working on that 
area.

Please use diff -ru to create the patch, and send it as a 
gzipped file attachment.

If I choose not to incorporate your favourite feature, feel free 
to fork the development but please choose a different name 
for the program. 

This is GPL code after all.

Note that to protect the GPL license I will need to include
your name and email  address in the Authors and License
section.

If you want to contribute please get in touch with 
Robert Hepple <bhepple@freeshell.org>, to make sure work
is not duplicated.

For general ideas, please see "Planned Features".

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7. GJOTS MANUAL


Contents


7.1 Startup


Just start it as "gjots" - it will save anything in $HOME/.gjotsfile

Or use an argument - gjots accepts a single file, eg:

	gjots todo.gjots

The usual gnome options are available plus:

       --help Prints the standard gnome help items.

       -g, --geometry WIDTHxHEIGHT[+X+Y]
              Initial window geometry for gjots.  Note that the X
              and Y components are presently ignored.

       -p, --prefs filename
              Use filename as the preferences file for gjots  in­
              stead of the default ($HOME/.gjotsrc)

	-r, --readonly
	      Open file in readonly mode (does no locking)

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7.2 Open and save


Open and save do the usual and operate on gjots-format text
files (see below).

Unless readonly mode is in effect, gjots will create a lockfile
to enforce single-writer but allow multiple readers. If a file is
opened while it is already locked then a popup window will offer
"Try Again" or "Readonly". The "Try Again" option allows you to
exit the program which is locking the file. The lock file is a
simple file called .#filename, where filename is the name of the
gjots file being edited. It is in the same directory as the
original gjots file and it contains just the process identifier
(pid) of the locking process. If the locking process dies without
cleaning up the lockfile then gjots can detect it on the next
open.

Thus, locking is viable even on an NFS mounted volume.

File opened "readonly" have no locking applied.

There is a menu item under "Files" which allows the readonly
status of the program to be toggled. It also takes care of
locking and unlocking the file as above.

When gjots saves a file it moves any prior version of the file to
a backup in the manner of emacs ie. if saving to "file.gjots" 
which already exists, the old version would get saved to 
"file.gjots~"

If your filename ends in ".cpt", gjots will attempt to decrypt
and encrypt the file using ccrypt(1). If ccrypt is not installed
(it is not a standard part of all Linux distributions) the IO will
fail.

Install ccrypt for good security!

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7.3 Controls


The screen has a menubar and toolbar at the top which should be
fairly self-explanatory.

The toolbar on the left controls the tree hierarchy. Just play 
around with it and you'll soon get the hang of it.

"Promote Items" makes the current item(s) into children of their
grandparent.

"Demote Items" makes the current items(s) into children of the
sibling immediately before them.

When a folder loses all of its items it gets automatically 
demoted to a plain item.

A right button click on a tree item pops up a menu of 
operations.

The 'Options' button pops up the Preferences dialog.

The 'Wrap' button formats the current paragraph according to the
line length set in the preferences dialog (also activated by ^L)

The 'Ext.Ed' button invokes an external editor according to the
command string in the Preferences dialog. The default string is
"xterm -e vi %s' - the %s is replaced by the temporary filename.
Any other editor can be used as long as it can accept a filename
as an argument.

The 'Date' button puts a date stamp into the file at the current
position.

The 'Find' button pops up the find & replace dialog. 

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7.4 Find & Replace


F6 or the Find button in the top toolbar popup the find & replace
dialog.

The operation should be intuitive - type in what you want to find
into the Find & Replace dialog Find entry and press the Find
button.

To replace one occurance put the new text in the Replace entry box and
press the Replace button. The program will search forward and replace
the text.

To replace all occurances (from the current position to the end of
file) press the Replace All button.

The Close and Cancel button both hide the find dialog - the close
button saves any new settings for future use (except for the Find and
Replace strings).

The Clear button just clears the Find & Replace entries.

Any errors appear both in the area immediately below the button and
also in the main program status bar.

Options appear below the Find & Replace buttons and include "Match
Case" to limit the search to the same upper and lower case. "Global"
is the default and allows the search to take place across the whole
file. The alternative is to limit the search to the current item.
"Regular Expression" permits the use of POSIX Extended Regular
Expressions as defined in "man 7 regex" (ie as used in egrep).

A quick reference to regular expressions:

.	any character
^	start of line (only as the first item in the RE)
$	end of line (only as the last item in the RE)

*	zero or more repetitions of the previous RE
+	one or more repetitions of the previous RE
?	zero or one repetitions of the previous RE
{n}	exactly n repetitions of the previous RE
{n,}	n or more repetitions of the previous RE
{n,m}	n to m repetitions of the previous RE
[ ]	matches any character in the set. Ranges are eg. [a-z]
[^ ]	matches any character not in the set
(  )	forms a 'remembered' pattern
|	pattern alternation eg. x|y means "matches x or y"
\n	n is 1 to 9 - a backreference to a previous pattern

Special matches inside [..] brackets:
[:alnum:]	matches any alphanumeric
[:alpha:]	matches any alphabetic
[:blank:]	matches any blank (space or TAB)
[:cntrl:]	matches any control character
[:digit:]	matches any digit 0-9
[:graph:]	matches any printable except space
[:lower:]	matches any lowercase
[:print:]	matches any printable including space
[:punct:]	matches any punctuation (not space or alphanumeric)
[:space:]	matches any whitespace (space TAB \f \n \r \v)
[:upper:]	matches any uppercase
[:xdigit:]	matches any hex digit
[:<:]		matches any beginning of word
[:>:]		matches any end of word

Thus \.[[:alnum:]] matches a full stop followed by an
alphanumeric.

To match one of the 'magic' characters ^.[$()|*+?{\ escape it
with \

For the replacement pattern the following sequences are
available:

\&	paste the entire found string
\1..\9	paste the nth found sub-pattern (defined with (...) )
\U	uppercase the rest of the substitution
\L	lowercase the rest of the substitution
\u	uppercase the next character
\l	lowercase the next character
\n	insert a newline
\Q	quote (ie ignore magic value of \) until \E
\E	stops upper/lower case and quoting

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7.5 Preferences


The following items can be selected as preferences and will be
remembered in the startup file '~/.gjotsrc':

Text line length - used in paragraph formating, (65)

External Editor - editor to use with the Ext.Ed. button (xterm -e vi %s)

Date format - format string to feed to strftime(3) for use in
date stamp. Do a "man strftime" for details. (%F) e.g.: 

	%F		: 2002-11-03)
	%c		: Sun 03 Nov 2002 10:33:22 AM EST
	(%d %b %y)	: (03 Nov 02)

Font - the font to be used for the text display. The controls and
tree still use the default GTK font.
(-misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso8859-1)

I personally prefer:
-adobe-courier-medium-r-normal-*-*-110-*-*-m-*-iso8859-1

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7.6 Keyboard operation


Most of the key shortcuts are the usual. In the text display, the
normal emacs key mappings apply:

	^a, home		goto start of line
	^e, end			goto end of line
	^b, left		move back one place
	^f, right		move forward one place
	Alt-b, ^left	move one word left
	Alt-f, ^right	move one word right
	^n, down		move to next line
	^p, up			move to previous line
	^home/end		goto start/end of text

	^k			delete to end of line
	^d, delete		delete one char
	^h, b/s			delete one char backwards
	Alt-d			delete word
	^L			paragraph re-format or "wrap" 

Shift and <move> mark the region.

Plus the following work:

	^x			cut
	^c			copy
	^v			paste
	^w			delete one word backwards

Key mappings in the tree:

In general, plain keys just move around the tree.
Control keys manipulate the tree.

	up			goto previous item
	down			goto next item
	^up			move the current item(s) up the tree
	^down			move the current item(s) down the tree
	shift-up/down	extend the selection
	left			ascend the tree
	right			descend the tree
	^left			promote items
	^right			demote items
	home			goto to the first item at the present level
	end			goto to the last item at the present level
	^home			goto the very first item
	^end			goto the very last (expanded) item
	^c			copy
	^x, delete		cut
	^v, insert		paste (note: does NOT over-write)

Global key mappings:
	^s			does save
	^q			does quit
	F6			Popup the find dialog
	Shift-F6		Find next
	F12			moves between tree and text

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7.7 Import and export


You can bring data in and out of gjots using the import and 
export functions. These operate on the currently selected 
item so you can control exactly what gets saved.

The format of the file is the normal gjots format.

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7.8 gjots file format


Just the same as kjots but with a hierarchy:

    \NewEntry
    title1
    this is the stuff that goes into title1

    \NewFolder
    \NewEntry 
    title2
    this is title2's stuff

    \NewEntry 
    title3
    title 3's stuff

    \EndFolder

The \keywords need to be at the start of the line to be 
recognised.

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7.9 Encryption


gjots can encrypt and decrypt files using the ccrypt(1)
package.

gjots prompts for passwords where needed.

Make sure you have ccrypt installed if you want to use this
feature.

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7.10 Security


For encryption, I've used the equivalent of:
 
    {write cleartext} | KEYWORD=password ccencrypt -E KEYWORD >filename.cpt
  
This exposes the password briefly as an environment 
parameter although it is 'scrubbed' and removed from the 
gjots process environment immediately after use. According 
to the ccrypt man page, "on most modern systems" the ps 
command protects environment parameters from ordinary 
users. Under Linux, you can 'cat /proc/PID/environ' to see 
the environment parameters of any process that you own - 
only root can spy on another's environment so using -E is no 
less secure than your login password and root's login 
password.
 
The only other way to do this (AFAICS) would be:

	{write cleartext} >file.gjot 
	echo password |ccencrypt -k - file.gjot
 
 ... while this provides better protection for the password, this
(briefly) exposes the cleartext as a file - as bad as or worse 
than exposing the key as an environment parameter!

Decrypting is much easier - I use stdin to pass in the 
password:

     echo password |ccdecrypt -c -k - filename.cpt | {read from pipe}
 
A supplementary channel (eg. stdin=0, stdout=1 stderr=3
stdpasswd=3) for ccrypt to read passwords would be a better
solution (but ccrypt does not provide it).

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7.11 Utilities


Contents


7.11.1 gjots2html


gjots2html converts a gjots file into HTML together with a
table of contents which looks remarkably like the subject tree.

See the man page for more details.

Contents


7.11.2 gjots2docbook


converts a gjots file into DOCBOOK XML format.

See the man page for more details.

Contents


7.11.3 docbook2gjots


Converts DOCBOOK XML into gjots - see the man page for full details

See the man page for more details.

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8. Development status


This is very much a beta release. It undoubtedly has bugs so 
save often. In case of doubt the prior version is available as 
"file.gjots~"

If you have ideas on how to improve gjots, please email me.
If you like the program, please let me know otherwise I will 
never know if anyone is using it!


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8.1 Planned features


If lots of people email me and say they like it then I might be
motivated to add more features. What gets added will be 
limited to the design goal of "very fast and lightweight", but 
might include:

gjots
=====

Help page - probably fire this up in gjots!

Add timestamp to every item & display in appbar when 
selected

adopt default file extension - .gjots?

drag & drop items!!!

autosort on/off for folders

close all / open all folders

Edit->Clear, Properties, 

Settings->preferences
	autosave

Support for item options: \Options including:
	open/closed
	para details
	...?

Move to gtk-2 when it becomes more all-pervasive.

gjots2html
==========

Increase number of levels to max supported by HTML (9?)
Add options:
	-r N, --rule=N: <HR> for all levels up to N
	-n, --no-toc: suppress table of contents
	-t title: Provide centered title before toc

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8.2 Known bugs


None known, of course, other than:

I would be particularly interested in knowing just how I can 
get hold of the button-3 popup menu widgets (so that I can 
disable the Paste function until there is something to paste).

When gjots starts up, the tree display is sometimes garbled. It
can be cleared by closing and re-opened the root, but why does it
happen?

The cut buffer is implemented as a plaintext temporary file and
is therefore a possible security hole - although the file is not
visible in the file system (it is opened and immediately unlinked
so gjots is the only program that can read or write it). Probably
not a real problem.

Inappropriate error messages if can't open a gjots file on
initial startup

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8.3 Platforms


Presently only tested on RH Linux 7.3 i386

This uses the full GNU autoconf/automake package so should be
fairly portable. If you want to port to another platform please
let me know so I can eliminate duplication of effort (and give
due credit!)

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9. Authors & Licence


Contents


9.1 Authors


Mostly written by :
	Robert Hepple <bhepple@freeshell.org>, 2002.

The paragraph wrapping code is lifted (under the GPL)
from Sylpheed 0.7.6 by 
	Hiroyuki Yamamoto <yamamoto@good-day.co.jp> 
and adapted for gjots by Robert Hepple, 2002.

Logo by DSP Popeck - wokoglopulator@yahoo.com

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9.2 Licence (GPL)


Copyright (C) 2002 Robert Hepple
Copyright (C) 1999-2002 Hiroyuki Yamamoto
Copyright (C) 2002 DSP Popeck

		    GNU GENERAL PUBLIC LICENSE
		       Version 2, June 1991

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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