\input texinfo @c -*-texinfo-*-

@c %**start of header
@setfilename dklrt.info
@settitle Ledger Recurring Transactions 1.0
@c %**end of header

@syncodeindex fn cp
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@c Before release, run C-u C-c C-u C-a
@c (texinfo-all-menus-update with a prefix arg). This
@c updates the node pointers, which texinfmt.el needs.

@copying
This manual is for emacs package dklrt version 1.0.

Copyright @copyright{} 2010–2013 David Keegan.

May be redistributed under the terms of the Free Software
Foundation GNU Free Documentation Licence.
@end copying

@dircategory Emacs misc features
@direntry
* Ledger Recurring Transactions: (dklrt).
@end direntry

@documentencoding UTF-8

@iftex
@finalout
@end iftex

@macro dkcmditem{key, key2, command}
@item @kbd{\key\}@tie{} (@kbd{\key2\}) (@code{\command\})
@end macro

@macro dkcmd{key, key2, command}
@kbd{\key\}@tie{} (@kbd{\key2\}) (@code{\command\})
@end macro

@macro dkcmdidx{key, key2, command}
@kindex \key\
@kindex \key2\
@findex \command\
@kbd{\key\}@tie{} (@kbd{\key2\}) (@code{\command\})
@end macro

@macro dktag{text}
@samp{\text\}
@end macro

@titlepage
@title Ledger Recurring Transactions 1.0
@author David Keegan
@page
@vskip 0pt plus 1filll
@insertcopying
@end titlepage
@contents

@ifnottex
@node Top
@top Ledger Recurring Transactions
@end ifnottex

@menu
* Introduction::
* Configuration File::
* Operations::
* Index::
@end menu

@node Introduction
@chapter Introduction

@menu
* Overview::
* Getting Started::
* Known Issues::
* History::
@end menu

@node Overview
@section Overview

An add-on to ledger-mode, this package appends recurring
transactions to the current ledger file, usually on entry
to @code{ledger-mode}.

Recurring transactions are configured in a separate file
which conforms to ledger file format, and resides in the
same directory as the ledger file.

@node Getting Started
@section Getting Started

To append recurring transactions on entry to ledger-mode,
add this line to your emacs profile:

@lisp
(add-hook 'ledger-mode-hook 'dklrt-AppendRecurringMaybe)
@end lisp

To bind \C-cr to dklrt-AppendRecurring while in ledger-mode
only, add this line to your emacs profile (optional):

@lisp
(add-hook 'ledger-mode-hook 'dklrt-SetCcKeys)
@end lisp

If you want to have recurring transactions positioned by date in
the ledger file, add this line to your emacs profile (optional):

(setq dklrt-SortAfterAppend t)

Note that as this causes the ledger buffer to be sorted, it
may, as a side-effect, change the positions of non-recurring
transactions.

@node Known Issues
@section Known Issues

@enumerate
@item
DkTbd: Only ISO Dates are supported: YYYY-MM-DD.

@item
Depends on some python code which is included in the package
(and requires that python is installed on the system).
@end enumerate

@node History
@section History

This package was written between 2011-06-08 and 2011-08-17.

@node Configuration File
@chapter Configuration File

Recurring transactions for a particular ledger file are
configured in a separate file. The configuration file is in
the same directory as the ledger file, and its filename is
the same as that of the ledger file except that the ledger
file suffix is replaced by @file{.rec} (configurable).

A recurring transactions configuration file contains one or
more transactions in ledger file format, but with the
following restrictions on the initial (date/payee) line of
the transaction:

@enumerate
@item
The transaction date must be in ISO format: YYYY-MM-DD.
DkTbd.

@item
Automated transactions (beginning with ``='' are not
supported.

@item
Auxiliary dates (date1=date2) are not supported.

@item
A transaction state/clear flag (after the date) is not
permitted.

@item

A transaction repetition period must follow the date in the
position where a transaction ``code'' would normally occur.
It must contain a (parenthesised) repetition period in the
following format:

@cindex time interval
@verbatim
(<Digits><Unit>)
@end verbatim

Where:

@table @code
@item Digits
An unsigned decimal integer period count.

@item Unit
A single character from the following y (year), m (month) w
(week), d (day), specifying the period unit and following
immediately after the integer without intervening space.
@end table

@end enumerate

@node Operations
@chapter Operations

The main entry point is function
@code{dklrt-AppendRecurringMaybe} which is normally run on
entry to @code{ledger-mode}. This function does nothing unless
all the following conditions are met:

@enumerate

@item
The current buffer is in @code{ledger-mode}.

@item
The current buffer is unmodified.

@item
The file associated with the current buffer exists.

@item
The current file is NOT a recurring transaction config file
(ie does not have suffix @file{.rec}).

@item
A recurring transaction config file exists for the current
ledger file (same directory and basename, but with suffix
@file{.rec}).

@end enumerate

If all the conditions are met, recurring transactions are
read from the config file and their dates are compared with
the current date. 

If a recurring transaction is ``due'' it is appended to the
ledger file on disk, and its configured date is then shifted
forward by the configured repetition period, and it is
written back to the config file with the new date.


@node Index
@chapter Index
@printindex cp

@bye