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author | Jim Blandy <jimb@redhat.com> | 1991-04-10 16:35:52 +0000 |
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committer | Jim Blandy <jimb@redhat.com> | 1991-04-10 16:35:52 +0000 |
commit | 2ee93b17f2703d058b509ed0b2ba427aa798328e (patch) | |
tree | 3dc36e4515ed47e53d583ca367c70d124259661e /lisp/textmodes/page-ext.el | |
parent | 26281776192b68ef49021c72a936dedbc1d7478a (diff) | |
download | emacs-2ee93b17f2703d058b509ed0b2ba427aa798328e.tar.gz |
Initial revision
Diffstat (limited to 'lisp/textmodes/page-ext.el')
-rw-r--r-- | lisp/textmodes/page-ext.el | 745 |
1 files changed, 745 insertions, 0 deletions
diff --git a/lisp/textmodes/page-ext.el b/lisp/textmodes/page-ext.el new file mode 100644 index 00000000000..c17fa187551 --- /dev/null +++ b/lisp/textmodes/page-ext.el @@ -0,0 +1,745 @@ +;;;; page-ext.el + +;;; Page handling commands +;;; by Robert J. Chassell + +;;; You may use these commands to handle an address list or other +;;; small data base. + +;;; Copyright (C) 1990 Free Software Foundation +;;; Please send bug reports to bob@ai.mit.edu + +;;; Change Log ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;;; +;;; Version 0.043 +;;; 24 May 1990 - When the cursor is at the end of the pages directory +;;; buffer (which is empty), a `C-c C-c' (pages-directory-goto) +;;; command now takes you to the end of the buffer. +;;; +;;; Version 0.042 +;;; 16 May 1990 - Since people often handle address and other files +;;; differently, variable `pages-directory-for-addresses-narrowing-p' +;;; now specifies whether `pages-directory-goto' should narrow +;;; addresses buffer to entry to which it goes. +;;; `pages-directory-buffer-narrowing-p' continues to control +;;; narrowing of pages buffer. +;;; +;;; `add-new-page' documentation string now explains +;;; that the value of the inserted page-delimiter is a `^L'. +;;; +;;; `pages-directory-previous-regexp' definition reworded. +;;; +;;; Removed unneeded defvar for `pages-directory-buffer'. +;;; +;;; Version 0.041 +;;; 14 May 1990 - `pages-last-search' bound to nil initially. +;;; Remove unnecessary lines from `search-pages' definition. +;;; +;;; Version 0.04 +;;; 18 Mar 1990 - `pages-directory' creates a directory for only the +;;; accessible portion of the buffer; it does not automatically widen +;;; the buffer. +;;; +;;; However, `pages-directory-for-addresses' does widen the addresses' +;;; buffer before constructing the addresses' directory. +;;; +;;; Version 0.032 +;;; 20 Feb 1990 - `pages-directory-for-addresses' no longer copies +;;; first line of addresses directory to kill-ring +;;; +;;; Remove `(kill-all-local-variables)' line from +;;; `pages-directory-address-mode' so Emacs will not be told to forget +;;; the name of the file containing the addresses! +;;; +;;; Version 0.031 +;;; 15 Feb 1990 - `pages-directory-goto' no longer erroneously selects +;;; the entry on the following line when the cursor is at the end of +;;; the line, but selects the entry on which the cursor rests. +;;; +;;; `pages-directory-address-mode' now sets local variables and enables +;;; `describe-mode' to describe Addresses Directory mode. +;;; +;;; `pages-directory-for-addresses' now sets the buffer-modifed flag +;;; for the Addresses Directory to nil. +;;; +;;; The documentation string for both `pages-directory-mode' and +;;; `pages-directory-address-mode' now provide a lookup for the +;;; `pages-directory-goto' keybinding. +;;; +;;; Version 0.03 +;;; 10 Feb 1990 - Incorporated a specialized extension of the +;;; `pages-directory' command called `pages-directory-for-addresses' +;;; and bound it to ctl-x-ctl-p-map "d" for integration with other +;;; page functions. This function finds a file, creates a directory +;;; for it using the `pages-directory' command, and displays the +;;; directory. It is primarily for lists of addresses and the like. +;;; +;;; The difference between this and the `pages-directory' command is +;;; that the `pages-directory-for-addresses' command presumes a +;;; default addresses file (although you may optionally specify a file +;;; name) and it switches you to the directory for the file, but the +;;; `pages-directory' command creates a directory for the current +;;; buffer, and pops to the directory in another window. +;;; +;;; `pages-directory' now places the cursor over the header line of +;;; the page in which point was located in the pages buffer. +;;; +;;; New `set-page-delimiter' command sets the buffer local value of +;;; the page-delimiter variable. With prefix arg, resets function to +;;; original value. (Quicker to use than `edit-options'.) +;;; +;;; Version 0.02 +;;; 9 Feb 1990 - `pages-directory' now displays the +;;; first line that contains a non-blank character that follows the +;;; `page-delimiter'; this may be the rest of the line that contains +;;; the `page-delimiter' or a line following. (In most instances, the +;;; line containing a non-blank character is a line of text.) +;;; Modification includes changes to `pages-copy-header-and-position'. +;;; +;;; Each directory created by `pages-directory' now possesses a name +;;; derived on the name of the pages buffer. Consequently, you may +;;; create several different directories, one for each pages buffer. +;;; +;;; `sort-pages-in-region' no longers requires the text to start on +;;; the line immediately following the line containing the +;;; page-delimiter. +;;; +;;; `pages-directory-goto' no longer narrows to the page +;;; automatically. Instead, if you wish it to narrow to the page, set +;;; variable pages-directory-buffer-narrowing-p to a non-nil value. +;;; Default is nil; this is an experiment to see whether it is useful +;;; to see the surrounding context. +;;; +;;; Version 0.011 +;;; 2 Feb 1990 - `add-new-page': removed extraneous space. +;;; +;;; Version 0.01 +;;; 28 Jan 1990 - Initial definitions. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + +;;;; Summary + +; The current page commands are: + +; forward-page C-x ] +; backward-page C-x [ +; narrow-to-page C-x p +; count-lines-page C-x l +; mark-page C-x C-p (change this to C-x C-p C-m) +; sort-pages not bound +; what-page not bound + +; The new page handling commands all use `C-x C-p' as a prefix. This +; means that the key binding for `mark-page' must be changed. +; Otherwise, no other changes are made to the current commands or +; their bindings. + +; New page handling commands: + +; next-page C-x C-p C-n +; previous-page C-x C-p C-p +; search-pages C-x C-p C-s +; add-new-page C-x C-p C-a +; sort-pages-buffer C-x C-p s +; set-page-delimiter C-x C-p C-l +; pages-directory C-x C-p C-d +; pages-directory-for-addresses C-x C-p d +; goto-page C-c C-c + + +;;;; Using the page commands +; +; The page commands are helpful in several different contexts. For +; example, programmers often divide source files into sections using the +; `page-delimiter'; you can use the `pages-directory' command to list +; the sections. + +; You may change the buffer local value of the `page-delimiter' with +; the `set-page-delimiter' command. This command is bound to `C-x C-p +; C-l' The command prompts you for a new value for the page-delimiter. +; Called with a prefix-arg, the command resets the value of the +; page-delimiter to its original value. + + +;;;; Handling an address list or small data base + +; You may use the page commands to handle an address list or other +; small data base. Put each address or entry on its own page. The +; first line of text in each page is a `header line' and is listed by +; the `pages-directory' or `pages-directory-for-addresses' command. + +; Specifically: +; +; 1. Begin each entry with a `page-delimiter' (which is, by default, +; `^L' at the beginning of the line). +; +; 2. The first line of text in each entry is the `heading line'; it +; will appear in the pages-directory-buffer which is constructed +; using the `C-x C-p C-d' (pages-directory) command or the `C-x +; C-p d' (pages-directory-for-addresses) command. +; +; The heading line may be on the same line as the page-delimiter +; or it may follow after. It is the first non-blank line on the +; page. Conventionally, the heading line is placed on the line +; immediately following the line containing page-delimiter. +; +; 3. Follow the heading line with the body of the entry. The body +; extends up to the next `page-delimiter'. The body may be of any +; length. It is conventional to place a blank line after the last +; line of the body. + +; For example, a file might look like this: +; +; FSF +; Free Software Foundation +; 675 Massachusetts Avenue +; Cambridge, MA 02139 USA +; (617) 876-3296 +; gnu@prep.ai.mit.edu +; +; +; House Subcommittee on Intellectual Property, +; U.S. House of Representatives, +; Washington, DC 20515 +; +; Congressional committee concerned with permitting or preventing +; monopolistic restictions on the use of software technology +; +; +; George Lakoff +; ``Women, Fire, and Dangerous Things: +; What Categories Reveal about the Mind'' +; 1987, Univ. of Chicago Press +; +; About philosophy, Whorfian effects, and linguistics. +; +; +; OBI (On line text collection.) +; Open Book Initiative +; c/o Software Tool & Die +; 1330 Beacon St, Brookline, MA 02146 USA +; (617) 739-0202 +; obi@world.std.com + +; In this example, the heading lines are: +; +; FSF +; House Subcommittee on Intellectual Property +; George Lakoff +; OBI (On line text collection.) + +; The `C-x C-p s' (sort-pages-buffer) command sorts the entries in the +; buffer alphabetically. + +; You may use any of the page commands, including the `next-page', +; `previous-page', `add-new-page', `mark-page', and `search-pages' +; commands. + +; You may use either the `C-x C-p d' (pages-directory-for-addresses) +; or the `C-x C-p C-d' (pages-directory) command to construct and +; dislay a directory of all the heading lines. + +; In the directory, you may position the cursor over a heading line +; and type `C-c C-c' to go to the entry to which it refers in the +; pages buffer. + +; When used in conjunction with the `pages-directory-for-addresses' +; command, the `C-c C-c' (pages-directory-goto) command narrows to the +; entry to which it goes. But, when used in conjunction with the +; `pages-directory' command, the `C-c C-c' (pages-directory-goto) +; command does not narrow to the entry, but widens the buffer so you +; can see the context surrounding the entry. + +; If you wish, you may create several different directories, +; one for each different buffer. + +;; `pages-directory-for-addresses' in detail + +; The `pages-directory-for-addresses' assumes a default addresses +; file. You do not need to specify the addresses file but merely type +; `C-x C-p d' from any buffer. The command finds the file, constructs +; a directory for it, and switches you to the directory. If you call +; the command with a prefix arg, `C-u C-x C-p d', it prompts you for a +; file name. + +;; `pages-directory' in detail + +; Call the `pages-directory' from the buffer for which you want a +; directory created; it creates a directory for the buffer and pops +; you to the directory. + +; The `pages-directory' command has several options: + +; Called with a prefix arg, `C-u C-x C-p C-d', the `pages-directory' +; prompts you for a regular expression and only lists only those +; header lines that are part of pages that contain matches to the +; regexp. In the example above, `C-u C-x C-p C-d 617 RET' would +; match the telephone area code of the first and fourth entries, so +; only the header lines of those two entries would appear in the +; pages-directory-buffer. +; +; Called with a numeric argument, the `pages-directory' command +; lists the number of lines in each page. This is helpful when you +; are printing hardcopy. + +; Called with a negative numeric argument, the `pages-directory' +; command lists the lengths of pages whose contents match a regexp. + + +;;;; Key bindings for page handling functions + +(global-unset-key "\C-x\C-p") + +(defvar ctl-x-ctl-p-map (make-sparse-keymap) + "Keymap for subcommands of C-x C-p, which are for page handling.") + +(define-key ctl-x-map "\C-p" 'ctl-x-ctl-p-prefix) +(fset 'ctl-x-ctl-p-prefix ctl-x-ctl-p-map) + +(define-key ctl-x-ctl-p-map "\C-n" 'next-page) +(define-key ctl-x-ctl-p-map "\C-p" 'previous-page) +(define-key ctl-x-ctl-p-map "\C-a" 'add-new-page) +(define-key ctl-x-ctl-p-map "\C-m" 'mark-page) +(define-key ctl-x-ctl-p-map "\C-s" 'search-pages) +(define-key ctl-x-ctl-p-map "s" 'sort-pages-buffer) +(define-key ctl-x-ctl-p-map "\C-l" 'set-page-delimiter) +(define-key ctl-x-ctl-p-map "\C-d" 'pages-directory) +(define-key ctl-x-ctl-p-map "d" 'pages-directory-for-addresses) + + +;;;; Page movement function definitions + +(defun next-page (&optional count) + "Move to the next page bounded by the `page-delimiter' variable. +With arg (prefix if interactive), move that many pages." + (interactive "p") + (or count (setq count 1)) + (widen) + ;; Cannot use forward-page because of problems at page boundaries. + (while (and (> count 0) (not (eobp))) + (if (re-search-forward page-delimiter nil t) + nil + (goto-char (point-max))) + (setq count (1- count))) + (while (and (< count 0) (not (bobp))) + (if (re-search-backward page-delimiter nil t) + (goto-char (match-beginning 0)) + (goto-char (point-min))) + (setq count (1+ count))) + (narrow-to-page) + (goto-char (point-min)) + (recenter 0)) + +(defun previous-page (&optional count) + "Move to the previous page bounded by the `page-delimiter' variable. +With arg (prefix if interactive), move that many pages." + (interactive "p") + (or count (setq count 1)) + (next-page (- count))) + + +;;;; Adding and searching pages + +(defun add-new-page (header-line) + "Insert new page at point; prompt for header line. +Page begins with a `^L' as the page-delimiter. +Point is left in the body of page." + (interactive "sHeader line: ") + (widen) + (insert (format "\n\n%s\n\n" header-line)) + ;; don't renarrow; stay unnarrowed to see context + (forward-line -1)) + +(defvar pages-last-search nil + "Value of last regexp searched for. Initially, nil.") + +(defun search-pages (regexp) + "Search for REGEXP, starting from point, and narrow to page it is in." + (interactive (list + (read-string + (format "Search for `%s' (end with RET): " + (or pages-last-search "regexp"))))) + (if (equal regexp "") + (setq regexp pages-last-search) + (setq pages-last-search regexp)) + (widen) + (re-search-forward regexp) + (narrow-to-page)) + + +;;;; Sorting pages + +(autoload 'sort-subr "sort" "Primary function for sorting." t nil) + +(defun sort-pages-in-region (reverse beg end) + "Sort pages in region alphabetically. Prefix arg means reverse order. + +Called from a program, there are three arguments: +REVERSE (non-nil means reverse order), BEG and END (region to sort)." + +;;; This sort function handles ends of pages differently than +;;; `sort-pages' and works better with lists of addresses and similar +;;; files. + + (interactive "P\nr") + (save-restriction + (narrow-to-region beg end) + (goto-char (point-min)) + ;;; `sort-subr' takes three arguments + (sort-subr reverse + + ;; NEXTRECFUN is called with point at the end of the + ;; previous record. It moves point to the start of the + ;; next record. + (function (lambda () + (re-search-forward page-delimiter nil t) + (skip-chars-forward " \t\n") + )) + + ;; ENDRECFUN is is called with point within the record. + ;; It should move point to the end of the record. + (function (lambda () + (if (re-search-forward + page-delimiter + nil + t) + (goto-char (match-beginning 0)) + (goto-char (point-max)))))))) + +(defun sort-pages-buffer (&optional reverse) + "Sort pages alphabetically in buffer. Prefix arg means reverse order. +\(Non-nil arg if not interactive.\)" + + (interactive "P") + (or reverse (setq reverse nil)) + (widen) + (let ((beginning (point-min)) + (end (point-max))) + (sort-pages-in-region reverse beginning end))) + + +;;;; Pages directory ancillary definitions + +(defvar pages-directory-buffer-narrowing-p nil + "*If non-nil, `pages-directory-goto' narrows pages buffer to entry.") + +(defvar pages-directory-previous-regexp nil + "Value of previous regexp used by `pages-directory'. +\(This regular expression may be used to select only those pages that +contain matches to the regexp.\)") + +(defvar pages-buffer nil + "The buffer for which the pages-directory function creates the directory.") + +(defvar pages-directory-prefix "*Directory for:" + "Prefix of name of temporary buffer for pages-directory.") + +(defvar pages-pos-list nil + "List containing the positions of the pages in the pages-buffer.") + +(defvar pages-directory-map nil + "Keymap for the pages-directory-buffer.") + +(if pages-directory-map + () + (setq pages-directory-map (make-sparse-keymap)) + (define-key pages-directory-map "\C-c\C-c" + 'pages-directory-goto)) + +(defun set-page-delimiter (regexp reset-p) + "Set buffer local value of page-delimiter to REGEXP. +Called interactively with a prefix argument, reset `page-delimiter' to +its original value. + +In a program, non-nil second arg causes first arg to be ignored and +resets the page-delimiter to the original value." + + (interactive + (if current-prefix-arg + (list original-page-delimiter nil) + (list (read-string "Set page-delimiter to regexp: " page-delimiter) + nil))) + (make-local-variable 'original-page-delimiter) + (make-local-variable 'page-delimiter) + (setq original-page-delimiter + (or original-page-delimiter page-delimiter)) + (if (not reset-p) + (setq page-delimiter regexp) + (setq page-delimiter original-page-delimiter)) + (if (interactive-p) + (message "The value of `page-delimiter' is now: %s" page-delimiter))) + + +;;;; Pages directory main definitions + +(defun pages-directory + (pages-list-all-headers-p count-lines-p &optional regexp) + "Display a directory of the page headers in a temporary buffer. +A header is the first non-blank line after the page-delimiter. +\\[pages-directory-mode] +You may move point to one of the lines in the temporary buffer, +then use \\<pages-directory-goto> to go to the same line in the pages buffer. + +In interactive use: + + 1. With no prefix arg, display all headers. + + 2. With prefix arg, display the headers of only those pages that + contain matches to a regular expression for which you are + prompted. + + 3. With numeric prefix arg, for every page, print the number of + lines within each page. + + 4. With negative numeric prefix arg, for only those pages that + match a regular expression, print the number of lines within + each page. + +When called from a program, non-nil first arg means list all headers; +non-nil second arg means print numbers of lines in each page; if first +arg is nil, optional third arg is regular expression. + +If the buffer is narrowed, the `pages-directory' command creates a +directory for only the accessible portion of the buffer." + + (interactive + (cond ((not current-prefix-arg) + (list t nil nil)) + ((listp current-prefix-arg) + (list nil + nil + (read-string + (format "Select according to `%s' (end with RET): " + (or pages-directory-previous-regexp "regexp"))))) + ((> (prefix-numeric-value current-prefix-arg) 0) + (list t t nil)) + ((< (prefix-numeric-value current-prefix-arg) 0) + (list nil + t + (read-string + (format "Select according to `%s' (end with RET): " + (or pages-directory-previous-regexp "regexp"))))))) + + (if (equal regexp "") + (setq regexp pages-directory-previous-regexp) + (setq pages-directory-previous-regexp regexp)) + + (if (interactive-p) + (message "Creating directory for: %s " + (buffer-name))) + + (let ((buffer (current-buffer)) + (pages-directory-buffer + (concat pages-directory-prefix " " (buffer-name) " ")) + (linenum 1) + (pages-buffer-original-position (point)) + (pages-buffer-original-page 0)) + + ;; `with-output-to-temp-buffer' binds the value of the variable + ;; `standard-output' to the buffer named as its first argument, + ;; but does not switch to that buffer. + (with-output-to-temp-buffer pages-directory-buffer + (save-excursion + (set-buffer standard-output) + (pages-directory-mode) + (insert + "==== Pages Directory: use `C-c C-c' to go to page under cursor. ====" ?\n) + (setq pages-buffer buffer) + (setq pages-pos-list nil)) + + (if pages-list-all-headers-p + + ;; 1. If no prefix argument, list all headers + (save-excursion + (goto-char (point-min)) + + ;; (a) Point is at beginning of buffer; but the first + ;; page may not begin with a page-delimiter + (save-restriction + ;; If page delimiter is at beginning of buffer, skip it + (if (and (save-excursion + (re-search-forward page-delimiter nil t)) + (= 1 (match-beginning 0))) + (goto-char (match-end 0))) + (narrow-to-page) + (pages-copy-header-and-position count-lines-p)) + + ;; (b) Search within pages buffer for next page-delimiter + (while (re-search-forward page-delimiter nil t) + (pages-copy-header-and-position count-lines-p))) + + ;; 2. Else list headers whose pages match regexp. + (save-excursion + ;; REMOVED save-restriction AND widen FROM HERE + (goto-char (point-min)) + + ;; (a) Handle first page + (save-restriction + (narrow-to-page) + ;; search for selection regexp + (if (save-excursion (re-search-forward regexp nil t)) + (pages-copy-header-and-position count-lines-p))) + + ;; (b) Search for next page-delimiter + (while (re-search-forward page-delimiter nil t) + (save-restriction + (narrow-to-page) + ;; search for selection regexp + (if (save-excursion (re-search-forward regexp nil t)) + (pages-copy-header-and-position count-lines-p) + ))))) + + (set-buffer standard-output) + ;; Put positions in increasing order to go with buffer. + (setq pages-pos-list (nreverse pages-pos-list)) + (if (interactive-p) + (message "%d matching lines in: %s" + (length pages-pos-list) (buffer-name buffer)))) + (pop-to-buffer pages-directory-buffer) + (sit-for 0) ; otherwise forward-line fails if N > window height. + (forward-line (if (= 0 pages-buffer-original-page) + 1 + pages-buffer-original-page)))) + +(defun pages-copy-header-and-position (count-lines-p) + "Copy page header and its position to the Pages Directory. +Only arg non-nil, count lines in page and insert before header. +Used by `pages-directory' function." + + (let (position line-count) + + (if count-lines-p + (save-excursion + (save-restriction + (narrow-to-page) + (setq line-count (count-lines (point-min) (point-max)))))) + + ;; Keep track of page for later cursor positioning + (if (<= (point) pages-buffer-original-position) + (setq pages-buffer-original-page + (1+ pages-buffer-original-page))) + + (save-excursion + ;; go to first non-blank char after the page-delimiter + (skip-chars-forward " \t\n") + ;; set the marker here; this the place to which the + ;; `pages-directory-goto' command will go + (setq position (make-marker)) + (set-marker position (point)) + (let ((start (point)) + (end (save-excursion (end-of-line) (point)))) + ;; change to directory buffer + (set-buffer standard-output) + ;; record page position + (setq pages-pos-list (cons position pages-pos-list)) + ;; insert page header + (insert-buffer-substring buffer start end)) + + (if count-lines-p + (save-excursion + (beginning-of-line) + (insert (format "%3d: " line-count)))) + + (terpri)) + (forward-line 1))) + +(defun pages-directory-mode () + "Mode for handling the pages-directory buffer. + +Move point to one of the lines in this buffer, then use \\[pages-directory-goto] to go +to the same line in the pages buffer." + + (kill-all-local-variables) + (use-local-map pages-directory-map) + (setq major-mode 'pages-directory-mode) + (setq mode-name "Pages-Directory") + (make-local-variable 'pages-buffer) + (make-local-variable 'pages-pos-list) + (make-local-variable 'pages-directory-buffer-narrowing-p)) + +(defun pages-directory-goto () + "Go to the corresponding line in the pages buffer." + +;;; This function is mostly a copy of `occur-mode-goto-occurrence' + + (interactive) + (if (or (not pages-buffer) + (not (buffer-name pages-buffer))) + (progn + (setq pages-buffer nil + pages-pos-list nil) + (error "Buffer in which pages were found is deleted."))) + (beginning-of-line) + (let* ((pages-number (1- (count-lines (point-min) (point)))) + (pos (nth pages-number pages-pos-list)) + (end-of-directory-p (eobp)) + (narrowing-p pages-directory-buffer-narrowing-p)) + (pop-to-buffer pages-buffer) + (widen) + (if end-of-directory-p + (goto-char (point-max)) + (goto-char (marker-position pos))) + (if narrowing-p (narrow-to-page)))) + + +;;;; The `pages-directory-for-addresses' function and ancillary code + +(defvar pages-addresses-file-name "~/addresses" + "*Standard name for file of addresses. Entries separated by `page-delimiter'. +Used by `pages-directory-for-addresses' function.") + +(defvar pages-directory-for-addresses-narrowing-p t + "*If non-nil, `pages-directory-goto' narrows addresses buffer to entry.") + +(defun pages-directory-for-addresses (&optional filename) + "Find addresses file and display its directory. +By default, create and display directory of `pages-addresses-file-name'. +Optional argument is FILENAME. In interactive use, with prefix +argument, prompt for file name and provide completion. + +Move point to one of the lines in the displayed directory, +then use C-c C-c to go to the same line in the addresses buffer." + + (interactive + (list (if current-prefix-arg + (read-file-name "Filename: " pages-addresses-file-name)))) + + (if (interactive-p) + (message "Creating directory for: %s " + (or filename pages-addresses-file-name))) + (if (file-exists-p (or filename pages-addresses-file-name)) + (progn + (set-buffer + (find-file-noselect + (expand-file-name + (or filename pages-addresses-file-name)))) + (widen) + (pages-directory t nil nil) + (pages-directory-address-mode) + (setq pages-directory-buffer-narrowing-p + pages-directory-for-addresses-narrowing-p) + (delete-other-windows) + (save-excursion + (goto-char (point-min)) + (delete-region (point) (save-excursion (end-of-line) (point))) + (insert + "=== Address List Directory: use `C-c C-c' to go to page under cursor. ===") + (set-buffer-modified-p nil) + )) + (error "No addresses file found!"))) + +(defun pages-directory-address-mode () + "Mode for handling the Addresses Directory buffer. + +Move point to one of the lines in this buffer, then use C-c C-c to go +to the same line in the pages buffer." + + (use-local-map pages-directory-map) + (setq major-mode 'pages-directory-address-mode) + (setq mode-name "Addresses Directory") + (make-local-variable 'pages-buffer) + (make-local-variable 'pages-pos-list) + (make-local-variable 'pages-directory-buffer-narrowing-p)) + +;;;;;;;;;;;;;;;; end of page-ext.el ;;;;;;;;;;;;;;;; |