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Diffstat (limited to 'lisp/ledger-fontify.el')
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1 files changed, 199 insertions, 0 deletions
diff --git a/lisp/ledger-fontify.el b/lisp/ledger-fontify.el new file mode 100644 index 00000000..d307208f --- /dev/null +++ b/lisp/ledger-fontify.el @@ -0,0 +1,199 @@ +;;; ledger-fontify.el --- Provide custom fontification for ledger-mode + + +;; Copyright (C) 2014 Craig P. Earls (enderw88 at gmail dot com) + +;; This file is not part of GNU Emacs. + +;; This 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, or (at your option) any later +;; version. +;; +;; This 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 GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, +;; MA 02110-1301 USA. + +;;; Commentary: +;; Font-lock-mode doesn't handle multiline syntax very well. This +;; code provides font lock that is sensitive to overall transaction +;; states + + +;;; Code: + +(require 'ledger-navigate) +(require 'ledger-regex) +(require 'ledger-state) + +(defcustom ledger-fontify-xact-state-overrides nil + "If t the highlight entire xact with state." + :type 'boolean + :group 'ledger) + +(defun ledger-fontify-buffer-part (&optional beg end len) +"Fontify buffer from BEG to END, length LEN." + (save-excursion + (unless beg (setq beg (point-min))) + (unless end (setq end (point-max))) + (beginning-of-line) + (while (< (point) end) + (cond ((or (looking-at ledger-xact-start-regex) + (looking-at ledger-posting-regex)) + (ledger-fontify-xact-at (point))) + ((looking-at ledger-directive-start-regex) + (ledger-fontify-directive-at (point)))) + (ledger-navigate-next-xact-or-directive)))) + +(defun ledger-fontify-xact-at (position) + "Fontify the xact at POSITION." + (interactive "d") + (save-excursion + (goto-char position) + (let ((extents (ledger-navigate-find-element-extents position)) + (state (ledger-transaction-state))) + (if (and ledger-fontify-xact-state-overrides state) + (cond ((eq state 'cleared) + (ledger-fontify-set-face extents 'ledger-font-xact-cleared-face)) + ((eq state 'pending) + (ledger-fontify-set-face extents 'ledger-font-xact-pending-face))) + (ledger-fontify-xact-by-line extents))))) + +(defun ledger-fontify-xact-by-line (extents) + "Do line-by-line detailed fontification of xact in EXTENTS." + (save-excursion + (ledger-fontify-xact-start (car extents)) + (while (< (point) (cadr extents)) + (if (looking-at "[ \t]+;") + (ledger-fontify-set-face (list (point) (progn + (end-of-line) + (point))) 'ledger-font-comment-face) + (ledger-fontify-posting (point))) + (forward-line)))) + +(defun ledger-fontify-xact-start (pos) + "POS should be at the beginning of a line starting an xact. +Fontify the first line of an xact" + (goto-char pos) + (let ((line-start (line-beginning-position))) + (goto-char line-start) + (re-search-forward "[ \t]") + (ledger-fontify-set-face (list line-start (match-beginning 0)) 'ledger-font-posting-date-face) + (goto-char line-start) + (re-search-forward ledger-xact-after-date-regex) + (let ((state (save-match-data (ledger-state-from-string (match-string 1))))) + (ledger-fontify-set-face (list (match-beginning 3) (match-end 3)) + (cond ((eq state 'pending) + 'ledger-font-payee-pending-face) + ((eq state 'cleared) + 'ledger-font-payee-cleared-face) + (t + 'ledger-font-payee-uncleared-face)))) + (when (match-beginning 4) + (ledger-fontify-set-face (list (match-beginning 4) + (match-end 4)) 'ledger-font-comment-face)) + (forward-line))) + +(defun ledger-fontify-posting (pos) + "Fontify the posting at POS." + (let* ((state nil) + (end-of-line-comment nil) + (end (progn (end-of-line) + (point))) + (start (progn (beginning-of-line) + (point)))) + + ;; Look for a posting status flag + (set-match-data nil 'reseat) + (re-search-forward " \\([*!]\\) " end t) + (if (match-string 1) + (setq state (ledger-state-from-string (match-string 1)))) + (beginning-of-line) + (re-search-forward "[[:graph:]]\\([ \t][ \t]\\)" end 'end) ;; find the end of the account, or end of line + + (when (<= (point) end) ;; we are still on the line + (ledger-fontify-set-face (list start (point)) + (cond ((eq state 'cleared) + 'ledger-font-posting-account-cleared-face) + ((eq state 'pending) + 'ledger-font-posting-account-pending-face) + (t + 'ledger-font-posting-account-face))) + + + (when (< (point) end) ;; there is still more to fontify + (setq start (point)) ;; update start of next font region + (setq end-of-line-comment (re-search-forward ";" end 'end)) ;; find the end of the line, or start of a comment + (ledger-fontify-set-face (list start (point) ) + (cond ((eq state 'cleared) + 'ledger-font-posting-amount-cleared-face) + ((eq state 'pending) + 'ledger-font-posting-amount-pending-face) + (t + 'ledger-font-posting-amount-face))) + (when end-of-line-comment + (setq start (point)) + (end-of-line) + (ledger-fontify-set-face (list (- start 1) (point)) ;; subtract 1 from start because we passed the semi-colon + 'ledger-font-comment-face)))))) + +(defun ledger-fontify-directive-at (pos) + "Fontify the directive at POS." + (let ((extents (ledger-navigate-find-element-extents pos)) + (face 'ledger-font-default-face)) + (cond ((looking-at "=") + (setq face 'ledger-font-auto-xact-face)) + ((looking-at "~") + (setq face 'ledger-font-periodic-xact-face)) + ((looking-at "[;#%|\\*]") + (setq face 'ledger-font-comment-face)) + ((looking-at "\\(year\\)\\|Y") + (setq face 'ledger-font-year-directive-face)) + ((looking-at "account") + (setq face 'ledger-font-account-directive-face)) + ((looking-at "apply") + (setq face 'ledger-font-apply-directive-face)) + ((looking-at "alias") + (setq face 'ledger-font-alias-directive-face)) + ((looking-at "assert") + (setq face 'ledger-font-assert-directive-face)) + ((looking-at "\\(bucket\\)\\|A") + (setq face 'ledger-font-bucket-directive-face)) + ((looking-at "capture") + (setq face 'ledger-font-capture-directive-face)) + ((looking-at "check") + (setq face 'ledger-font-check-directive-face)) + ((looking-at "commodity") + (setq face 'ledger-font-commodity-directive-face)) + ((looking-at "define") + (setq face 'ledger-font-define-directive-face)) + ((looking-at "end") + (setq face 'ledger-font-end-directive-face)) + ((looking-at "expr") + (setq face 'ledger-font-expr-directive-face)) + ((looking-at "fixed") + (setq face 'ledger-font-fixed-directive-face)) + ((looking-at "include") + (setq face 'ledger-font-include-directive-face)) + ((looking-at "payee") + (setq face 'ledger-font-payee-directive-face)) + ((looking-at "P") + (setq face 'ledger-font-price-directive-face)) + ((looking-at "tag") + (setq face 'ledger-font-tag-directive-face))) + (ledger-fontify-set-face extents face))) + +(defun ledger-fontify-set-face (extents face) + "Set the text in EXTENTS to FACE." + (put-text-property (car extents) (cadr extents) 'face face)) + + +(provide 'ledger-fontify) + +;;; ledger-fontify.el ends here |