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(require 'ldg-regex)
(defgroup ledger-post nil
""
:group 'ledger)
(defcustom ledger-post-auto-adjust-amounts t
"If non-nil, ."
:type 'boolean
:group 'ledger-post)
(defcustom ledger-post-amount-alignment-column 52
"If non-nil, ."
:type 'integer
:group 'ledger-post)
(defcustom ledger-post-use-iswitchb nil
"If non-nil, ."
:type 'boolean
:group 'ledger-post)
(defcustom ledger-post-use-ido nil
"If non-nil, ."
:type 'boolean
:group 'ledger-post)
(defun ledger-post-all-accounts ()
(let ((origin (point))
(ledger-post-list nil)
account elements)
(save-excursion
(goto-char (point-min))
(while (re-search-forward ledger-post-line-regexp nil t)
(unless (and (>= origin (match-beginning 0))
(< origin (match-end 0)))
(add-to-list 'ledger-post-list (ledger-regex-post-line-account))))
(nreverse ledger-post-list))))
(declare-function iswitchb-read-buffer "iswitchb"
(prompt &optional default require-match start matches-set))
(defvar iswitchb-temp-buflist)
(defun ledger-post-completing-read (prompt choices)
"Use iswitchb as a completing-read replacement to choose from choices.
PROMPT is a string to prompt with. CHOICES is a list of strings
to choose from."
(cond
(ledger-post-use-iswitchb
(let* ((iswitchb-use-virtual-buffers nil)
(iswitchb-make-buflist-hook
(lambda ()
(setq iswitchb-temp-buflist choices))))
(iswitchb-read-buffer prompt)))
(ledger-post-use-ido
(ido-completing-read prompt choices))
(t
(completing-read prompt choices))))
(defvar ledger-post-current-list nil)
(defun ledger-post-pick-account ()
(interactive)
(let* ((account
(ledger-post-completing-read
"Account: " (or ledger-post-current-list
(setq ledger-post-current-list
(ledger-post-all-accounts)))))
(account-len (length account))
(pos (point)))
(goto-char (line-beginning-position))
(when (re-search-forward ledger-post-line-regexp (line-end-position) t)
(let ((existing-len (length (ledger-regex-post-line-account))))
(goto-char (match-beginning ledger-regex-post-line-group-account))
(delete-region (match-beginning ledger-regex-post-line-group-account)
(match-end ledger-regex-post-line-group-account))
(insert account)
(cond
((> existing-len account-len)
(insert (make-string (- existing-len account-len) ? )))
((< existing-len account-len)
(dotimes (n (- account-len existing-len))
(if (looking-at "[ \t]\\( [ \t]\\|\t\\)")
(delete-char 1)))))))
(goto-char pos)))
(defun ledger-next-amount (&optional end)
(when (re-search-forward "\\( \\|\t\\| \t\\)[ \t]*-?\\([A-Z$]+ *\\)?\\(-?[0-9,]+?\\)\\(.[0-9]+\\)?\\( *[A-Z$]+\\)?\\([ \t]*@@?[^\n;]+?\\)?\\([ \t]+;.+?\\)?$" (marker-position end) t)
(goto-char (match-beginning 0))
(skip-syntax-forward " ")
(- (or (match-end 4)
(match-end 3)) (point))))
(defun ledger-align-amounts (&optional column)
"Align amounts in the current region.
This is done so that the last digit falls in COLUMN, which defaults to 52."
(interactive "p")
(if (or (null column) (= column 1))
(setq column ledger-post-amount-alignment-column))
(save-excursion
(let* ((mark-first (< (mark) (point)))
(begin (if mark-first (mark) (point)))
(end (if mark-first (point-marker) (mark-marker)))
offset)
(goto-char begin)
(while (setq offset (ledger-next-amount end))
(let ((col (current-column))
(target-col (- column offset))
adjust)
(setq adjust (- target-col col))
(if (< col target-col)
(insert (make-string (- target-col col) ? ))
(move-to-column target-col)
(if (looking-back " ")
(delete-char (- col target-col))
(skip-chars-forward "^ \t")
(delete-horizontal-space)
(insert " ")))
(forward-line))))))
(defun ledger-post-align-amount ()
(interactive)
(save-excursion
(set-mark (line-beginning-position))
(goto-char (1+ (line-end-position)))
(ledger-align-amounts)))
(defun ledger-post-maybe-align (beg end len)
(save-excursion
(goto-char beg)
(when (< end (line-end-position))
(goto-char (line-beginning-position))
(if (looking-at ledger-post-line-regexp)
(ledger-post-align-amount)))))
(defun ledger-post-edit-amount ()
(interactive)
(goto-char (line-beginning-position))
(when (re-search-forward ledger-post-line-regexp (line-end-position) t)
(goto-char (match-end ledger-regex-post-line-group-account))
(when (re-search-forward "[-.,0-9]+" (line-end-position) t)
(let ((val (match-string 0)))
(goto-char (match-beginning 0))
(delete-region (match-beginning 0) (match-end 0))
(calc)
(while (string-match "," val)
(setq val (replace-match "" nil nil val)))
(calc-eval val 'push)))))
(defun ledger-post-prev-xact ()
(interactive)
(backward-paragraph)
(when (re-search-backward ledger-xact-line-regexp nil t)
(goto-char (match-beginning 0))
(re-search-forward ledger-post-line-regexp)
(goto-char (match-end ledger-regex-post-line-group-account))))
(defun ledger-post-next-xact ()
(interactive)
(when (re-search-forward ledger-xact-line-regexp nil t)
(goto-char (match-beginning 0))
(re-search-forward ledger-post-line-regexp)
(goto-char (match-end ledger-regex-post-line-group-account))))
(defun ledger-post-setup ()
(let ((map (current-local-map)))
(define-key map [(meta ?p)] 'ledger-post-prev-xact)
(define-key map [(meta ?n)] 'ledger-post-next-xact)
(define-key map [(control ?c) (control ?c)] 'ledger-post-pick-account)
(define-key map [(control ?c) (control ?e)] 'ledger-post-edit-amount))
(if ledger-post-auto-adjust-amounts
(add-hook 'after-change-functions 'ledger-post-maybe-align t t))
(add-hook 'after-save-hook #'(lambda () (setq ledger-post-current-list nil))))
(provide 'ldg-post)
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