4df990014f
Moved context function to leg-context, from leg-report. Cleaned up many regex in ldg-context.
183 lines
7.3 KiB
EmacsLisp
183 lines
7.3 KiB
EmacsLisp
;;; ldg-context.el --- Helper code for use with the "ledger" command-line tool
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;; Copyright (C) 2003-2013 John Wiegley (johnw AT gnu DOT org)
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;; This file is not part of GNU Emacs.
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;; This is free software; you can redistribute it and/or modify it under
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;; the terms of the GNU General Public License as published by the Free
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;; Software Foundation; either version 2, or (at your option) any later
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;; version.
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;;
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;; This is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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;; for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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;; MA 02111-1307, USA.
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;;; Commentary:
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;; Provide facilities for reflection in ledger buffers
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;;; Code:
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(eval-when-compile
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(require 'cl))
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(defconst ledger-line-config
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'((xact
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(("^\\(\\([0-9][0-9][0-9][0-9]/\\)?[01]?[0-9]/[0123]?[0-9]\\)[ \t]+\\(\\([!*]\\)[ \t]\\)?[ \t]*\\((\\(.*\\))\\)?[ \t]*\\(.*?\\)[ \t]*;\\(.*\\)[ \t]*$"
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(date nil status nil nil code payee comment))
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("^\\(\\([0-9][0-9][0-9][0-9]/\\)?[01]?[0-9]/[0123]?[0-9]\\)[ \t]+\\(\\([!*]\\)[ \t]\\)?[ \t]*\\((\\(.*\\))\\)?[ \t]*\\(.*\\)[ \t]*$"
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(date nil status nil nil code payee))))
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(acct-transaction
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(("^\\([ \t]+;\\|;\\)\\s-?\\(.*\\)"
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(indent comment))
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("\\(^[ \t]+\\)\\([*! ]?\\)\\(.*?\\)\\s-\\s-[ \t]+\\([$€£]\\s-?\\)\\(-?[0-9]*\\(\\.[0-9]*\\)?\\)[ \t]*;[ \t]*\\(.*\\)[ \t]*$"
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(indent status account commodity amount nil comment)) ;checked 2013-04-06
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("\\(^[ \t]+\\)\\([*! ]?\\)\\(.*?\\)\\s-\\s-[ \t]+\\([$€£]\\s-?\\)\\(-?[0-9]*\\(\\.[0-9]*\\)?\\)$"
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(indent status account commodity amount)) ;checked 2013-04-06
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("\\(^[ \t]+\\)\\([*! ]?\\)\\(.*?\\)\\s-\\s-[ \t]+\\(-?[0-9]+\\.[0-9]*\\)[ \t]+\\(.*?\\)[ \t]*\\(;[ \t]*\\(.*?\\)[ \t]*$\\|@+\\)"
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(indent status account amount nil commodity comment)) ;checked 2013-04-06
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("\\(^[ \t]+\\)\\([*! ]?\\)\\(.*?\\)\\s-\\s-[ \t]+\\(-?[0-9]+\\.[0-9]*\\)[ \t]+\\(.*\\)"
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(indent status account amount nil commodity)) ;checked 2013-04-06
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("\\(^[ \t]+\\)\\([*! ]?\\)\\(.*?\\)[ \t]*;[ \t]*\\(.*?\\)[ \t]*$"
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(indent status account comment))
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("\\(^[ \t]+\\)\\([*! ]?\\)\\(.*?\\)[ \t]*$"
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(indent status account))))))
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(defun ledger-extract-context-info (line-type pos)
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"Get context info for current line with LINE-TYPE.
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Assumes point is at beginning of line, and the POS argument specifies
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where the \"users\" point was."
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(let ((linfo (assoc line-type ledger-line-config))
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found field fields)
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(dolist (re-info (nth 1 linfo))
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(let ((re (nth 0 re-info))
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(names (nth 1 re-info)))
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(unless found
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(when (looking-at re)
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(setq found t)
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(dotimes (i (length names))
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(when (nth i names)
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(setq fields (append fields
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(list
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(list (nth i names)
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(match-string-no-properties (1+ i))
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(match-beginning (1+ i))))))))
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(dolist (f fields)
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(and (nth 1 f)
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(>= pos (nth 2 f))
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(setq field (nth 0 f))))))))
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(list line-type field fields)))
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(defun ledger-thing-at-point ()
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"Describe thing at points. Return 'transaction, 'posting, or nil.
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Leave point at the beginning of the thing under point"
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(let ((here (point)))
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(goto-char (line-beginning-position))
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(cond ((looking-at "^[0-9/.=-]+\\(\\s-+\\*\\)?\\(\\s-+(.+?)\\)?\\s-+")
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(goto-char (match-end 0))
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'transaction)
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((looking-at "^\\s-+\\([*!]\\s-+\\)?[[(]?\\(.\\)")
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(goto-char (match-beginning 2))
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'posting)
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((looking-at "^\\(sun\\|mon\\|tue\\|wed\\|thu\\|fri\\|sat\\)\\s-+")
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(goto-char (match-end 0))
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'day)
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(t
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(ignore (goto-char here))))))
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(defun ledger-context-at-point ()
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"Return a list describing the context around point.
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The contents of the list are the line type, the name of the field
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containing point, and for selected line types, the content of
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the fields in the line in a association list."
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(let ((pos (point)))
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(save-excursion
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(beginning-of-line)
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(let ((first-char (char-after)))
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(cond ((equal (point) (line-end-position))
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'(empty-line nil nil))
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((memq first-char '(?\ ?\t))
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(ledger-extract-context-info 'acct-transaction pos))
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((memq first-char '(?0 ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9))
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(ledger-extract-context-info 'xact pos))
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((equal first-char ?\=)
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'(automated-xact nil nil))
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((equal first-char ?\~)
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'(period-xact nil nil))
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((equal first-char ?\!)
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'(command-directive))
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((equal first-char ?\;)
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'(comment nil nil))
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((equal first-char ?Y)
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'(default-year nil nil))
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((equal first-char ?P)
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'(commodity-price nil nil))
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((equal first-char ?N)
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'(price-ignored-commodity nil nil))
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((equal first-char ?D)
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'(default-commodity nil nil))
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((equal first-char ?C)
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'(commodity-conversion nil nil))
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((equal first-char ?i)
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'(timeclock-i nil nil))
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((equal first-char ?o)
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'(timeclock-o nil nil))
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((equal first-char ?b)
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'(timeclock-b nil nil))
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((equal first-char ?h)
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'(timeclock-h nil nil))
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(t
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'(unknown nil nil)))))))
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(defun ledger-context-other-line (offset)
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"Return a list describing context of line OFFSET from existing position.
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Offset can be positive or negative. If run out of buffer before reaching
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specified line, returns nil."
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(save-excursion
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(let ((left (forward-line offset)))
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(if (not (equal left 0))
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nil
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(ledger-context-at-point)))))
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(defun ledger-context-line-type (context-info)
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(nth 0 context-info))
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(defun ledger-context-current-field (context-info)
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(nth 1 context-info))
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(defun ledger-context-field-info (context-info field-name)
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(assoc field-name (nth 2 context-info)))
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(defun ledger-context-field-present-p (context-info field-name)
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(not (null (ledger-context-field-info context-info field-name))))
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(defun ledger-context-field-value (context-info field-name)
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(nth 1 (ledger-context-field-info context-info field-name)))
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(defun ledger-context-field-position (context-info field-name)
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(nth 2 (ledger-context-field-info context-info field-name)))
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(defun ledger-context-field-end-position (context-info field-name)
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(+ (ledger-context-field-position context-info field-name)
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(length (ledger-context-field-value context-info field-name))))
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(defun ledger-context-goto-field-start (context-info field-name)
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(goto-char (ledger-context-field-position context-info field-name)))
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(defun ledger-context-goto-field-end (context-info field-name)
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(goto-char (ledger-context-field-end-position context-info field-name)))
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(provide 'ldg-context)
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;;; ldg-report.el ends here
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