/usr/share/emacs/site-lisp/edb/db-summary.el is in edb 1.31-3.
This file is owned by root:root, with mode 0o644.
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;; Copyright (C) 2004,2005,2006,2007,2008 Thien-Thi Nguyen
;; This file is part of EDB.
;;
;; EDB 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 3, or (at your option) any later
;; version.
;;
;; EDB 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 EDB; see the file COPYING. If not, write to the Free
;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
;; MA 02110-1301, USA.
;;; Commentary:
;; Patterned in part after rmail-new-summary.
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Variables
;;;
;;;
;;; Hooks
;;;
(defvar database-summary-mode-hooks nil
"Normal hook run when switching to Database Summary mode.")
;;;
;;; Summary variables
;;;
(defun dbs-set-index (index)
(edb--S! :index index)
(edb--S! :index-fraction (format "%d/%d" index (edb--S :nrecords))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Macros for working in the correct buffer
;;;
(defmacro db-in-data-display-buffer (&rest body)
(declare (indent 0) (debug body))
`(db-in-buffer (or (edb--S :data-display-buffer)
(current-buffer))
,@body))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Creating the summary
;;;
(defun db-summary ()
"Display a summary (or directory) of records in a separate buffer.
When called from the summary buffer, this updates the summary.
The displayed format can be set with `dbf-set-summary-format'."
(interactive)
(db-in-data-display-buffer
(cond ((= 0 (edb--1D dbc-database :nrecords))
(delete-windows-on (edb--S :sumbuf))
(db-message "Database is empty"))
(t
(let ((ddb (current-buffer))
(sumbuf (edb--S :sumbuf)))
(unless (edb--S :sumfun)
(dbf-set-summary-format (edb--S :sumfmt)))
(unless sumbuf
(edb--S! :sumbuf
(with-current-buffer
(generate-new-buffer
(format "%s-summary" (buffer-name ddb)))
(set (make-local-variable 'edb--bprops)
(edb--rinit '(:edb1 :bprops) (current-buffer)
:size 5 :weakness 'key))
(set (make-local-variable 'dbc-database)
(buffer-local-value 'dbc-database ddb))
(edb--S! :data-display-buffer ddb)
(database-summary-mode)
(edb--S! :summaries (make-hash-table :weakness 'key))
(setq sumbuf (current-buffer)))))
(when (with-current-buffer sumbuf
(dbs-out-of-date-p))
(dbf-fill-summary-buffer))
(pop-to-buffer sumbuf)
(edb--S! :data-display-buffer ddb)
;; Go to proper line.
(dbs-move-to-proper-record))))))
;; This is spelled out instead of being db-summary-mode because it's a
;; "standalone" major mode, while db-edit-mode and db-view-mode are
;; "cooperating" major modes (unimportant distinction, really --ttn).
(defun database-summary-mode ()
"Summary buffer for database mode.
Most keystrokes perform the same function they do in the data display buffer.
Key bindings:
\\{database-summary-mode-map}"
(setq major-mode 'database-summary-mode)
(setq mode-name "Database Summary")
(set-buffer-modified-p nil)
(setq buffer-read-only t)
(use-local-map database-summary-mode-map)
(setq mode-line-format
(list
"----- "
(format "%-17s" (buffer-name (edb--S :data-display-buffer)))
" %[(" 'mode-name
'minor-mode-alist
'(:eval (concat (and (edb--S :hide-p) " Hide")
" "
(edb--S :index-fraction)))
")%]---"
'(-3 . "%p")
"-%-"))
(edb--1run-hooks 'database-summary-mode-hooks)
;; Force an update.
(edb--S! :nrecords -1))
(defsubst db-summary-buffer-p ()
"T if this buffer is a database summary buffer."
(eq major-mode 'database-summary-mode))
(defun db-summary-subset ()
"Make EDB summary-listing based on hits of STRING search, of FIELD."
(interactive)
(db-mark-searched-records)
(db-hide-unmarked-records)
(db-toggle-show-hidden-records 0)
(db-summary)
(db-hiding-toggle 0)
(db-hiding-toggle 1))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Filling the summary
;;;
(defun dbs-insert-record-summary (record mhp mtag htag)
;; mhp -- mark-hidden-records-p
(let ((one (if (edb-tagp mtag record) "+" " "))
(two (if (and mhp (edb-tagp htag record)) "[" " "))
(rest (substring (gethash record (edb--S :summaries)) 2)))
(insert one two rest)))
(defun dbf-fill-summary-buffer (&optional movep)
;; fixme: check database nonempty. --ttn
(let ((sum (edb--S :sumfun))
(lines (edb--1D dbc-database :sum1lines))
(hide (and (edb--S :invisible-hidden-p)
(edb--S :hide-p)))
(mhp (edb--S :hide-p))
(sumbuf (edb--S :sumbuf)))
(when sumbuf
(with-current-buffer sumbuf
(let ((ht (edb--S :summaries))
(mtag (edb-tag :markedp dbc-database))
(htag (edb-tag :hiddenp dbc-database))
buffer-read-only)
(erase-buffer)
(db-message "Computing summary...")
(db-lmap
(lambda (record)
(unless (gethash record ht)
(puthash record (funcall sum record) ht))
(dbs-insert-record-summary record mhp mtag htag))
dbc-database hide "Computing summary...%d")
(db-message "Computing summary...done")
;; get rid of last newline.
(backward-delete-char 1)
(set-buffer-modified-p nil)
(edb--S! :nrecords (edb--1D dbc-database :nrecords))
(edb--S! :recompute-p nil)
(edb--S! :index 0))
(when movep
(dbs-move-to-proper-record))))))
(defun dbf-update-summary-marks ()
;; Update just the marked and hidden summary markings efficiently.
(when (edb--S :sumbuf)
(with-current-buffer (edb--S :sumbuf)
(let ((opoint (point))
(hidep (not (or (not (edb--S :invisible-hidden-p))
(not (edb--S :hide-p)))))
(mtag (edb-tag :markedp dbc-database))
(htag (edb-tag :hiddenp dbc-database))
line hiddenp)
(unwind-protect
(let ((sum1lines (edb--1D dbc-database :sum1lines))
buffer-read-only)
(goto-char (point-min))
(db-lmap
(lambda (record)
(delete-char 1)
(insert (if (edb-tagp mtag record) "+" " "))
(backward-char 1)
(setq line 0
hiddenp (and (edb--S :hide-p) (edb-tagp htag record)))
;; Each summary item spans exactly sum1lines screen lines.
(while (< line sum1lines)
(forward-char 1)
(delete-char 1)
(insert (if hiddenp "[" " "))
(forward-line 1)
(incf line)))
dbc-database
hidep))
(goto-char opoint))))))
(defun dbf-update-summary-item (index)
;; Update just changes to one record in the summary efficiently.
(let ((record (aref (edb--1D dbc-database :vov) (1- index)))
(mtag (edb-tag :markedp dbc-database))
(htag (edb-tag :hiddenp dbc-database))
(sum (edb--S :sumfun))
(sumbuf (edb--S :sumbuf)))
(when (and sumbuf (or (not (edb-tagp htag record))
(not (edb--S :invisible-hidden-p))
(not (edb--S :hide-p))))
(db-in-buffer sumbuf
(let ((orig (edb--S :index)))
(unwind-protect
(let ((ht (edb--S :summaries))
buffer-read-only)
(puthash record (funcall sum record) ht)
(dbs-move-to-proper-record index)
;; assuming at beginning of line
(delete-region (point)
(progn
(forward-line
(edb--1D dbc-database :sum1lines))
(point)))
(dbs-insert-record-summary record (edb--S :hide-p) mtag htag))
;; save old line and column instead.
(dbs-move-to-proper-record orig)))))))
(defun db-format->lines/sforms (format db indent nlp vheightp)
;; Take a format and return a cons of two values: a number and a list.
;; The list is list of forms which, when evaluated with variable
;; `formatted-record' bound, evaluate to strings; these can be used as
;; argumentes to concat, insert, etc. The number is the number of lines
;; occupied by the items when inserted.
;;
;; Signal an error if any displayspec has nonequal min-height and
;; max-height, unless VHEIGHTP is non-nil, in which case the number
;; returned is a minimum. NLP non-nil means add a newline.
(let ((ph (and (string-match "\\\\\\\\" format) ; backslash place holder
(db-unused-char-in-string format)))
(lines 0)
results beg end ds minh maxh)
(when (and indent (> indent 0))
(setq format (concat (make-string indent 32)
(replace-regexp-in-string
"\n"
(concat "\n" (make-string indent 32))
format))))
(when ph
(setq format (replace-regexp-in-string
(regexp-quote "\\\\")
(char-to-string ph)
format)))
(while (string-match db-ds+opts-rx format)
(setq beg (match-beginning 0)
end (match-end 0)
ds (db-dspec<-string format db)
minh (edb--1ds-min-height ds)
maxh (edb--1ds-max-height ds))
;; fixme: should not be necessary. --ttn
(unless minh
(setf minh (setf (edb--1ds-min-height ds) 1)))
(unless (or vheightp maxh)
(setf maxh (setf (edb--1ds-max-height ds) minh)))
(if (or vheightp (= minh maxh))
(incf lines (1- minh))
(error "Min- (%s) and max (%s) heights differ in summary displayspec."
minh maxh))
(unless (zerop beg)
(let ((literal (substring format 0 beg)))
(when ph
(subst-char-in-string ph ?\\ literal t))
(push literal results)
(incf lines (db-count-newlines literal))))
(push `(db-ds-printed ,ds formatted-record) results)
(setq format (substring format end)))
(when nlp (setq format (concat format "\n")))
(unless (equal "" format)
(when ph
(subst-char-in-string ph ?\\ format t))
(push format results))
(incf lines (db-count-newlines format))
(cons lines (nreverse results))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Synching the format and summary buffers
;;;
(defsubst dbs-in-synch-p ()
(= (with-current-buffer (edb--S :data-display-buffer)
(edb--S :index))
(edb--S :index)))
(defsubst dbs-out-of-date-p ()
(or (edb--S :recompute-p)
(not (= (edb--1D dbc-database :nrecords)
(edb--S :nrecords)))))
(defsubst dbf-set-summary-out-of-date-p ()
(when (edb--S :sumbuf)
(with-current-buffer (edb--S :sumbuf)
(edb--S! :recompute-p t))))
(defun dbs-synch-format-with-summary ()
;; Ensure that the data display and summary buffers
;; have the same current record.
(cond ((dbs-out-of-date-p) (dbs-synch-summary-with-format))
((dbs-in-synch-p))
(t (let ((sum-index (edb--S :index)))
(db-in-buffer (edb--S :data-display-buffer)
(db-select-record sum-index))))))
(defun dbs-synch-summary-with-format ()
(when (dbs-out-of-date-p)
(db-in-buffer (edb--S :data-display-buffer)
(dbf-fill-summary-buffer)))
;; If we just did the above, it will clearly be out of synch.
;; But it might be even if it wasn't out of date.
(unless (dbs-in-synch-p)
(dbs-move-to-proper-record)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Moving about
;;;
(defsubst dbs-goto-nth-summary (n)
;; NOTE: If hidden records aren't shown in the summary (and that should be
;; an option), then this is wrong. And in that case it's better to do
;; relative than absolute motion.
(goto-line (1+ (* (edb--1D dbc-database :sum1lines) (1- n))))
(edb--S! :point (point)))
(defun dbs-move-to-proper-record (&optional index)
"Move point to the summary of the record shown in the format or to INDEX."
;; Make no assumptions about the current index.
(if (with-current-buffer (edb--S :data-display-buffer)
(or (not (edb--S :hide-p))
(not (edb--S :invisible-hidden-p))))
(let ((index (or index (with-current-buffer
(edb--S :data-display-buffer)
(edb--S :index)))))
(dbs-goto-nth-summary index)
(dbs-set-index index))
(let ((prev 0)
(last nil)
(pidx (or index ; proper index
(with-current-buffer (edb--S :data-display-buffer)
(edb--S :index)))))
(db-lmap
(lambda (ignored-record)
(if (<= db-lmap-index pidx)
(setq prev (1+ prev)
last db-lmap-index)
;; Past it but still haven't found a nonhidden record.
(unless last
(setq prev 1
last db-lmap-index))))
dbc-database
t)
;; If there are no displayed records at all, this will fail.
(unless (= last pidx)
(db-message "Record %s does not appear in the summary buffer"
pidx))
(dbs-goto-nth-summary prev)
(dbs-set-index last))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Movement commands
;;;
(defsubst dbs-forward-record (arg)
;; Move point forward ARG records in the summary buffer,
;; remembering the start position of that record.
(goto-char (edb--S :point))
(db-forward-line-wrapping (* (edb--1D dbc-database :sum1lines) arg))
(edb--S! :point (point)))
(defun dbs-next-record-ignore-hiding (arg)
"Go to the ARGth next record, ignoring hiding.
That is, all records, even those which are hidden, are counted."
(interactive "p")
(if (not (with-current-buffer (edb--S :data-display-buffer)
(not (edb--S :invisible-hidden-p))))
(db-next-record-ignore-hiding arg)
(dbs-synch-format-with-summary)
(db-in-buffer (edb--S :data-display-buffer)
(db-next-record-ignore-hiding arg))
(dbs-forward-record arg)
(dbs-set-index (with-current-buffer (edb--S :data-display-buffer)
(edb--S :index)))))
(defun dbs-previous-record-ignore-hiding (arg)
"Go to the ARGth previous record, ignoring hiding.
That is, all records, even those which are hidden, are counted."
(interactive "p")
(dbs-next-record-ignore-hiding (- arg)))
(defun dbs-scroll-up ()
(interactive)
(scroll-up)
(db-jump-to-point))
(defun dbs-scroll-down ()
(interactive)
(scroll-down)
(db-jump-to-point))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Summary Mode commands
;;;
(defvar database-summary-mode-map nil
"Keymap for database summary buffer.")
(unless database-summary-mode-map
(let ((m (make-sparse-keymap))
(meta (list meta-prefix-char)))
(suppress-keymap m)
(mapc (lambda (key-def)
(define-key m
(let ((key (car key-def)))
(if (consp key)
(concat meta (car key))
key))
(cdr key-def)))
'(("t" . toggle-truncate-lines)
;; Moving around in the database
("n" . db-next-record)
("p" . db-previous-record)
("\C-n" . db-next-record)
("\C-p" . db-previous-record)
("<" . db-first-record)
(">" . db-last-record)
(("<") . db-first-record)
((">") . db-last-record)
("j" . db-jump-to-record)
(" " . db-next-screen-or-record)
("\177" . db-previous-screen-or-record)
(("n") . dbs-next-record-ignore-hiding)
(("p") . dbs-previous-record-ignore-hiding)
(("\C-n") . db-next-marked-record)
(("\C-p") . db-previous-marked-record)
;; Exiting summary mode
("e" . dbs-edit)
("v" . dbs-view)
("q" . dbs-quit)
("x" . dbs-exit)
;; Adding and removing records
("a" . db-add-record)
("i" . db-add-record)
("d" . dbs-delete-record)
("k" . dbs-delete-record)
("o" . db-output-record-to-db)
("c" . db-copy-record)
;; Sorting
("S" . db-sort)
;; Searching commands
("s" . db-search)
;;("S" . db-incremental-search)
("\C-s" . db-isearch-forward)
("\C-r" . db-isearch-backward)
;; Everything else
("?" . describe-mode)
("O" . db-hide-record)
(("o") . db-hiding-toggle)
(("O") . db-hiding-set)
(("\C-o") . db-toggle-show-hidden-records)
("g" . db-summary)
("h" . db-summary)
("D" . db-summary)
("m" . db-mark-record)
("r" . db-report)
("\C-xr" . db-revert-database)
("\C-v" . dbs-scroll-up)
(("v") . dbs-scroll-down)
("\C-x\C-q" . db-toggle-modifiable-p)
("\C-c\C-c" . dbs-exit)
("b" . undefined)
("f" . undefined)
("l" . undefined)
;;("u" . db-revert-record)
("w" . undefined)
("y" . undefined)
("z" . undefined)))
(setq database-summary-mode-map m)))
(defun dbs-view ()
"Manipulate this record in the data display buffer in View mode."
(interactive)
(pop-to-buffer (edb--S :data-display-buffer))
(db-view-mode))
(defun dbs-edit ()
"Manipulate this record in the data display buffer in Edit mode."
(interactive)
(pop-to-buffer (edb--S :data-display-buffer))
(when (eq 'database-view-mode major-mode)
(db-first-field)))
(defun dbs-quit ()
"Quit the summary buffer, and return to its data display buffer.
Delete any windows showing the summary buffer prior to burying it."
(interactive)
(let ((ddb (edb--S :data-display-buffer))
(sum (current-buffer)))
(delete-windows-on sum)
(bury-buffer sum)
(pop-to-buffer ddb)))
(defun dbs-exit ()
"Exit the summary buffer, and return to its data display buffer.
Delete any windows showing the summary buffer prior to killing it."
(interactive)
(let ((ddb (edb--S :data-display-buffer))
(sum (current-buffer)))
(delete-windows-on sum)
(kill-buffer sum)
(pop-to-buffer ddb)))
(defun dbs-delete-record (&optional force)
"Delete the current record from the database.
With a prefix argument, doesn't verify."
(interactive "P")
(when (or force (y-or-n-p "Delete this record? "))
(db-in-buffer (edb--S :data-display-buffer)
(db-delete-record t))
;; hope we're at the beginning of the record
(let ((buffer-read-only nil))
(kill-line (edb--1D dbc-database :sum1lines))
(when (eobp)
(goto-char (point-min))))
(edb--S! :nrecords (1- (edb--S :nrecords)))
(db-message "Record deleted")
(dbs-set-index (with-current-buffer (edb--S :data-display-buffer)
(edb--S :index)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Menus
;;;
(defvar database-summary-mode-menu
'("Database"
"SUMMARY Mode:"
["Update summary" db-summary t]
["Report" db-report t]
"----"
("Motion"
["jump to record" db-jump-to-record t]
["last record" db-last-record t]
["first record" db-first-record t]
"---"
["next" db-next-record t]
["next (screen)" db-next-screen-or-record t]
["next (marked)" db-next-marked-record t]
["next (ingore hiding)" db-next-record-ignore-hiding t]
"---"
["prev" db-previous-record t]
["prev (screen) " db-previous-screen-or-record t]
["prev (marked)" db-previous-marked-record t]
["prev (ingore hiding)" db-previous-record-ignore-hiding t]
"---"
["Isearch Backward" db-isearch-backward t]
["Isearch Forward" db-isearch-forward t]
)
"----"
["View record" dbs-view t]
["Edit record" dbs-edit t]
["Delete Record" dbs-delete-record t]
["Add Record" db-add-record t]
["Mark Record" db-mark-record t]
["Hide Record" db-hide-record t]
"----"
("Hiding"
["Hiding on/off" db-hiding-toggle t]
["Hiding hide/show (in summary)" db-toggle-show-hidden-records t]
["Un-hide all" db-unhide-all t]
["Un-mark all" db-unmark-all t]
["Mark un-hidden" db-mark-unhidden-records t]
["Hide un-marked" db-hide-unmarked-records t]
)
"----"
["Sort database" db-sort t]
["Revert database" db-revert-database t]
["Save database" db-save-database t]
["Write database" db-write-database-file t]
"----"
["Quit" dbs-quit t]
["Exit" dbs-exit t]
)
"Menu for Database Summary mode.")
;; 'ignored for SYMBOL argument was giving me trouble.
;; Does this work in Lucid Emacs?
(easy-menu-define ignored
database-summary-mode-map
"ignored-doc-string"
database-summary-mode-menu)
;;; db-summary.el ends here
|