From 123658267ca8737a31d5f8c36ed27b7f0eaf54a8 Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Sun, 15 Jun 1997 21:00:32 +0000 Subject: Initial revision --- lisp/international/ogonek.el | 489 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 489 insertions(+) create mode 100644 lisp/international/ogonek.el (limited to 'lisp/international/ogonek.el') diff --git a/lisp/international/ogonek.el b/lisp/international/ogonek.el new file mode 100644 index 00000000000..044012d392a --- /dev/null +++ b/lisp/international/ogonek.el @@ -0,0 +1,489 @@ +;;; ogonek.el --- basic editing commands for Emacs + +;; Copyright (C) 1997 Free Software Foundation, Inc. + +;; Author: W{\l}odek Bzyl, Ryszard Kubiak +;; Maintainer: rysiek@ipipan.gda.pl (Ryszard Kubiak) +;; Keywords: i18n + +;; This file is part of GNU Emacs. + +;; GNU Emacs 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. + +;; GNU Emacs 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., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;; To use this library load it using +;; M-x load-library [enter] ogonek +;; Then, you may get a short info by calling one of +;; M-x ogonek-jak -- in Polish +;; M-x ogonek-how -- in English " + +(defconst ogonek-name-encoding-alist + '(("ascii" . (?A ?C ?E ?L ?N ?O ?S ?Z ?Z + ?a ?c ?e ?l ?n ?o ?s ?z ?z)) + ("iso8859-2" . (161 198 202 163 209 211 166 172 175 + 177 230 234 179 241 243 182 188 191)) + ("mazovia" . (143 149 144 156 165 163 152 160 161 + 134 141 145 146 164 162 158 166 167)) + ("windows-EE" . (165 198 202 163 209 211 140 143 175 + 185 230 234 179 241 243 156 159 191)) + ("windows-PL" . (165 198 202 163 209 211 140 143 175 + 185 230 234 179 241 243 156 159 191)) + ("latin-2" . (164 143 168 157 227 224 151 141 189 + 165 134 169 136 228 162 152 171 190)) + ("CP852" . (164 143 168 157 227 224 151 141 189 + 165 134 169 136 228 162 152 171 190)) + ("MeX" . (129 130 134 138 139 211 145 153 155 + 161 162 166 170 171 243 177 185 187)) + ("CorelDraw" . (197 242 201 163 209 211 255 225 237 + 229 236 230 198 241 243 165 170 186)) + ("Amiga" . (194 202 203 206 207 211 212 218 219 + 226 234 235 238 239 243 244 250 251)) + ("Mac" . (132 140 162 252 193 238 229 143 251 + 136 141 171 184 196 151 230 144 253)) + ) + "The constant `ogonek-name-encoding-alist' is a list of (NAME.LIST) pairs. +Each LIST contains codes for 18 Polish diacritic characters. +The codes are given in the following order: + Aogonek Cacute Eogonek Lslash Nacute Oacute Sacute Zacute Zdotaccent + aogonek cacute eogonek lslash nacute oacute sacute zacute zdotaccent.") + +; ------ A Little Info in Polish --------------- + +(defconst ogonek-informacja + " FUNKCJE INTERAKCYJNE UDOST/EPNIANE PRZEZ BIBLIOTEK/E `ogonek' + +Je/sli czytasz ten tekst, to albo przegl/adasz plik /zr/od/lowy +biblioteki `ogonek.el', albo wywo/la/le/s polecenie `ogonek-jak'. +W drugim przypadku mo/zesz usun/a/c tekst z ekranu, stosuj/ac +polecenie `M-x kill-buffer'. + +Niniejsza bibliteka dostarcza funkcji do zmiany kodowania polskich +znak/ow diakrytycznych. Funkcje te mo/zna pogrupowa/c nast/epuj/aco. + + 1. Funkcje `ogonek-recode-region' oraz `ogonek-recode-buffer' + przekodowu/j/a zaznaczony fragment wzgl/ednie ca/ly buffor. + Po wywo/laniu interakcyjnym funkcji zadawane s/a + pytania o parametry przekodowania, czyli o nazw/e kodowania + w tek/scie /zr/od/lowym i nazw/e kodowania docelowego. + Poni/zsze przyk/lady pokazuj/a, jakich parametr/ow + oczekuj/a wymienione funkcje: + + (ogonek-recode-region (poczatek) (koniec) + nazwa-kodowania-w-tekscie-zrodlowym nazwa-kodowania-docelowa) + (ogonek-recode-buffer + nazwa-kodowania-w-tekscie-zrodlowym nazwa-kodowania-docelowa) + + 2. Funkcje `ogonek-prefixify-region' oraz `ogonek-prefixify-buffer' + do wprowadzania notacji prefiksowej. + + (ogonek-prefixify-region (poczatek) (koniec) + nazwa-kodowania-w-tekscie-zrodlowym znak-prefiksu) + (ogonek-prefixify-buffer + nazwa-kodowania-w-tekscie-zrodlowym znak-prefiksu) + + 3. Funkcje `ogonek-deprefixify-region' oraz `ogonek-deprefixify-buffer' + do usuwania notacji prefiksowej. + + (ogonek-deprefixify-region (poczatek) (koniec) + znak-prefiksu nazwa-kodowania-docelowa) + (ogonek-prefixify-buffer + znak-prefiksu nazwa-kodowania-docelowa) + + U/zycie klawisza TAB w trybie interakcyjnym powoduje wy/swietlenie + listy dopuszczalnych nazw kod/ow, odczytywanych ze sta/lej + `ogonek-name-encoding-alist'. + + Funkcje biblioteki odwo/luj/a si/e do pi/eciu zmiennych, kt/ore + przechowuj/a podpowiedzi do zadawanych pyta/n. Nazwy tych zmiennych + oraz ich warto/sci domy/slne s/a nast/epuj/ace: + + ogonek-from-encoding iso8859-2 + ogonek-to-encoding mazovia + ogonek-prefix-char / + ogonek-prefix-from-encoding iso8859-2 + ogonek-prefix-to-encoding iso8859-2 + + Powy/zsze warto/sci domy/slne mo/zna zmieni/c przez umieszczenie w pliku + konfiguracyjnym `~/.emacs' odpowiednich przypisa/n, na przyk/lad: + + (setq ogonek-prefix-char ?/) + (setq ogonek-prefix-to-encoding \"iso8859-2\") + + Zamiast wczytywania ca/lej biblioteki `ogonek.el' mo/zna w pliku + `~/.emacs' za/z/ada/c wczytania wybranych funkcji i to dopiero w + chwili ich wywo/lania: + + (autoload 'ogonek-jak \"ogonek\") + (autoload 'ogonek-recode-region \"ogonek\") + (autoload 'ogonek-prefixify-region \"ogonek\") + (autoload 'ogonek-deprefixify-region \"ogonek\") + + Cz/esto wyst/epuj/ace kombinacje wywo/la/n funkcji mo/zna dla wygody + skr/oci/c i przypisa/c klawiszom. Oto praktyczne przyk/lady: + + (defun deprefixify-iso8859-2-region () + (interactive \"*\") + (ogonek-deprefixify-region + (region-beginning) (region-end) ?/ \"iso8859-2\")) + (global-set-key \"\\C-cd\" 'deprefixify-iso8859-2-region) ; ctrl-c d + + (defun mazovia-to-iso8859-2 () + (interactive \"*\") + (ogonek-recode-region \"mazovia\" \"iso8859-2\")) + (global-set-key \"\\C-cr\" 'mazovia-to-iso8859-2) ; ctrl-c r + + (defun prefixify-iso8859-2-region () + (interactive \"*\") + (ogonek-prefixify-region + (region-beginning) (region-end) \"iso8859-2\" ?/)) + (global-set-key \"\\C-cp\" 'prefixify-iso8859-2-region) ; ctrl-c p + + Ka/zd/a operacj/e przekodowania mo/zna w ca/lo/sci odwo/la/c + przez wykonanie polecenia `undo'.") + +(defun ogonek-jak () + "Display the string constant `ogonek-informacja' +by inserting it into an auxiliary *ogonek-jak* buffer." + (interactive) + (set-buffer (get-buffer-create " *ogonek-jak*")) + (insert ogonek-informacja) + (switch-to-buffer " *ogonek-jak*") + (beginning-of-buffer)) + +; ------ A Little Info in English -------- + +(defconst ogonek-information + " INTERACTIVE FUNCTIONS PROVIDED BY THE LIBRARY `ogonek'. + +If you read this text then you are either looking at the library's +source text or you have called the `ogonek-howto' command. In the +latter case you may remove this text using `M-x kill-buffer'. + +The library provides functions for changing the encoding of Polish +diacritic characters, the ones with an `ogonek' below or above them. +The functions come in the following gropus. + + 1. Functions `ogonek-recode-region' and `ogonek-recode-buffer' to + change between one-character encodings, such as `iso-8859-2', + `mazovia', plain `ascii' or `TeX'. As the names suggest you may + recode either the entire current buffer or just a marked region + of it. You may use these functions interactively as commands. Once + you call a command you will be asked about the code used in + the source text and the target encoding, the one you want to get. + The following examples show a non-interactive use of the functions + in a program. They also illustrtate what parameters the functions + expect: + + (ogonek-recode-region (region-beginning) (region-end) + from-code-name to-code-name) + (ogonek-recode-buffer from-code-name to-code-name) + + 2. Functions `ogonek-prefixify-region' and `ogonek-prefixify-buffer'. + for introducing prefix notation: + + (ogonek-prefixify-region (region-beginning) (region-end) + from-code-name prefix-char) + (ogonek-prefixify-buffer from-code-name prefix-char) + + 3. Functions `ogonek-deprefixify-region' and `ogonek-deprefixify-buffer' + for removing prefix notation: + + (ogonek-deprefixify-region (region-beginning) (region-end) + prefix-char to-code-name) + (ogonek-prefixify-buffer prefix-char to-code-name) + + The use of the TAB character in interactive makes `emacs' display + the list of encodings recognized by the library - the code names + are stored in the constant `ogonek-name-encoding-alist' + + The functions of the library refer to five variables that keep + hints to the questions asked. The names of those variables as well + as their default values are: + + ogonek-from-encoding iso8859-2 + ogonek-to-encoding mazovia + ogonek-prefix-char / + ogonek-prefix-from-encoding iso8859-2 + ogonek-prefix-to-encoding iso8859-2 + + The above default values can be changed by placing appropriate settings + in the '~/.emacs' file: + + (setq ogonek-prefix-char ?/) + (setq ogonek-prefix-to-encoding \"iso8859-2\") + + Instead of loading the whole library `ogonek.el' it may be better to + autoload chosen functions in `~/.emacs': + + (autoload 'ogonek-jak \"ogonek\") + (autoload 'ogonek-recode-region \"ogonek\") + (autoload 'ogonek-prefixify-region \"ogonek\") + (autoload 'ogonek-deprefixify-region \"ogonek\") + + The most frequent function calls can be abbreviated and assigned to + keyboard keys. Here are a few practical examples: + + (setq ogonek-from-code-name \"iso8859-2\") + (setq ogonek-to-code-name \"mazovia\") + (setq ogonek-prefix-char ?/) + (setq ogonek-prefix-from-code-name \"iso8859-2\") + (setq ogonek-prefix-to-code-name \"iso8859-2\") + + (defun deprefixify-iso8859-2-region () + (interactive \"*\") + (ogonek-deprefixify-region + (region-beginning) (region-end) ?/ \"iso8859-2\")) + (global-set-key \"\\C-cd\" 'deprefixify-iso8859-2-region) ; ctrl-c d + + (defun mazovia-to-iso8859-2 () + (interactive \"*\") + (ogonek-recode-region \"mazovia\" \"iso8859-2\")) + (global-set-key \"\\C-cr\" 'mazovia-to-iso8859-2) ; ctrl-c r + + (defun prefixify-iso8859-2-region () + (interactive \"*\") + (ogonek-prefixify-region + (region-beginning) (region-end) \"iso8859-2\" ?/)) + (global-set-key \"\\C-cp\" 'prefixify-iso8859-2-region) ; ctrl-c p + + Each recoding opertation can be called off by executing the `undo' + command.") + +(defun ogonek-how () + "Display the string constant `ogonek-information' +by inserting it into an auxiliary *recode-help* buffer." + (interactive "*") + (set-buffer (get-buffer-create " *ogonek-help*")) + (insert ogonek-information) + (switch-to-buffer " *ogonek-help*") + (beginning-of-buffer)) + +;; ------ Variables for keeping hints to the questions --------- + +(defvar ogonek-from-encoding "iso8859-2" + "*Encoding in the source file of recoding.") +(defvar ogonek-to-encoding "ascii" + "*Encoding in the target file of recoding.") +(defvar ogonek-prefix-char ?/ + "*Prefix character for prefix encodings.") +(defvar ogonek-prefix-from-encoding "iso8859-2" + "*Encoding in the source file subject to prefixifation.") +(defvar ogonek-prefix-to-encoding "iso8859-2" + "*Encoding in the target file subject to deprefixifation.") + +;; ------- Utilities for reading function parameters ------------- + +(defun ogonek-read-encoding (prompt default-name-var) + "Change with completion based on alist `ogonek-name-encoding-alist'." + (let ((encoding + (completing-read + (format "%s (default %s): " prompt (eval default-name-var)) + ogonek-name-encoding-alist nil t))) + ; set the new default name to be the one just read + (set default-name-var + (if (string= encoding "") (eval default-name-var) encoding)) + ; return the new default as the name you read + (eval default-name-var))) + +(defun ogonek-read-prefix (prompt default-prefix-var) + "Change prefix." + (let ((prefix-string + (read-string + (format "%s (default %s): " prompt + (char-to-string (eval default-prefix-var)))))) + (if (> (length prefix-string) 1) + (error "! Only one character expected.") + ; set the default prefix character to the one just read + (set default-prefix-var + (if (string= prefix-string "") + (eval default-prefix-var) + (string-to-char prefix-string))) + ; return the new default prefix as the code you read) + (eval default-prefix-var)))) + +(defun ogonek-lookup-encoding (encoding) + "Pick up an association for `encoding' in `ogonek-name-encoding-alist'. +Before returning a result test whether it has been properly set +which should be true if the encoding is one of those in +`ogonek-name-encoding-alist'" + (let ((code-list (assoc encoding ogonek-name-encoding-alist))) + (if (null code-list) + (error "! Name `%s' not known in `ogonek-name-encoding-alist'." + encoding) + (cdr code-list)))) + +; ------- A utility for zipping two lists ----------- + +(defun ogonek-zip-lists (xs ys) + "Build a list of pairs with elements from lists `xs' and `ys'. +We assume that `xs' and `ys' are of the same length." + (let ((pairs nil)) + (while xs + (setq pairs (cons (cons (car xs) (car ys)) pairs)) + (setq xs (cdr xs)) + (setq ys (cdr ys))) +; `pairs' are the function's result + pairs)) + +; -------- Dealing with one-character cencodings ------- + +(defun ogonek-build-table (recoding-pairs) + "Build a table nedeed by emacs's `translate-region' function. +The `recoding-pairs' argument is a list of pairs of characters. +By using the built-in `translate-region' function +we gain better performance compared to converting characters +by a hand-written routine as it is done for prefix encodings." + (let ((table (make-string 256 0)) + (i 0)) + (while (< i 256) + (aset table i i) + (setq i (1+ i))) + ; make changes in `table' according to `recoding-pairs' + (while recoding-pairs + (aset table (car (car recoding-pairs)) (cdr (car recoding-pairs))) + (setq recoding-pairs (cdr recoding-pairs))) + ; return the table just built + table)) + +(defun ogonek-recode-region (start end from-encoding to-encoding) + "This function recodes text in a region delineated by the current-mark +and the current point according to the defaults set by the variables +`ogonek-from-encoding' and `ogonek-to-encoding'." + (interactive (progn (barf-if-buffer-read-only) + (list + (region-beginning) + (region-end) + (ogonek-read-encoding "From code" 'ogonek-from-encoding) + (ogonek-read-encoding "To code" 'ogonek-to-encoding)))) + (save-excursion + (translate-region + start end + (ogonek-build-table + (ogonek-zip-lists + (ogonek-lookup-encoding from-encoding) + (ogonek-lookup-encoding to-encoding)))))) + +(defun ogonek-recode-buffer (from-encoding to-encoding) + "Call `ogonek-region' on the entire buffer." + (interactive (progn (barf-if-buffer-read-only) + (list + (ogonek-read-encoding "From code" 'ogonek-from-encoding) + (ogonek-read-encoding "To code" 'ogonek-to-encoding)))) + (ogonek-recode-region + (point-min) (point-max) from-encoding to-encoding)) + +; -------------------------------- +; Recoding with prefix notation +; -------------------------------- + +(defconst prefix-code '(?A ?C ?E ?L ?N ?O ?S ?X ?Z + ?a ?c ?e ?l ?n ?o ?s ?x ?z)) + +(defun ogonek-prefixify-region (start end from-encoding prefix-char) + "Replace -- in the region delineated by the current-mark +and the point -- each character from `ogonek-from-encoding' +by two characters: `ogonek-prefix-char' and the corresponding +character from the `prefix' list. Double the character +`ogonek-prefix-char'" + (interactive (progn (barf-if-buffer-read-only) + (list + (region-beginning) + (region-end) + (ogonek-read-encoding "From code" 'ogonek-prefix-from-encoding) + (ogonek-read-prefix "Prefix character" 'ogonek-prefix-char)))) + (let* + ((from-code (ogonek-lookup-encoding from-encoding)) + (to-code prefix-code) + (recoding-pairs ; we add `ogonek-prefix-char' for doubling + (ogonek-zip-lists + (cons prefix-char from-code) + (cons prefix-char to-code)))) + (save-excursion + (goto-char start) + (while (< (point) end) + (let ((pair (assoc (following-char) recoding-pairs))) + (if (null pair) + ; not a Polish character -- skip it + (forward-char 1) + ; Polish character -- replace it by a two characters + (delete-char 1) + (insert ogonek-prefix-char) + (insert (cdr pair)) + ; the region is now one character longer + (setq end (1+ end)))))))) + +(defun ogonek-prefixify-buffer (from-encoding prefix-char) + "Call `ogonek-prefixify-region' on the entire buffer." + (interactive (progn (barf-if-buffer-read-only) + (list + (ogonek-read-encoding "From code" 'ogonek-prefix-from-encoding) + (ogonek-read-prefix "Prefix character" 'ogonek-prefix-char)))) + (ogonek-prefixify-region + (point-min) (point-max) from-encoding prefix-char)) + +(defun ogonek-deprefixify-region (start end prefix-char to-encoding) + "Replace `ogonek-prefix-char' followed by a character from +the `prefix' list or another `ogonek-prefix-char' by +the corresponding character from `ogonek-from-encoding' +or by one `ogonek-prefix-char'." + (interactive (progn (barf-if-buffer-read-only) + (list (region-beginning) + (region-end) + (ogonek-read-prefix + "Prefix character" 'ogonek-prefix-char) + (ogonek-read-encoding + "To code" 'ogonek-prefix-to-encoding)))) + (let* + ((from-code prefix-code) + (to-code (ogonek-lookup-encoding to-encoding)) + (recoding-pairs + (ogonek-zip-lists + (cons prefix-char from-code) + (cons prefix-char to-code)))) + (save-excursion + (goto-char start) + (while (< (point) end) + (forward-char 1) + (if (or (not (= (preceding-char) prefix-char)) (= (point) end)) + ; non-prefix character or the end-of-region -- do nothing + () + ; now, we can check the next character + (let ((pair (assoc (following-char) recoding-pairs))) + (if (null pair) + ; `following-char' is not a Polish character nor it is + ; `prefix-char' since the one is among `recoding-pairs' + (forward-char 1) + ; else prefix followed by a Polish character has been found + ; replace it by the corresponding Polish character + (backward-char 1) + (delete-char 2) + (insert (cdr pair)) + ; the region got shorter by one character + (setq end (1- end))))))))) + +(defun ogonek-deprefixify-buffer (prefix-char to-encoding) + "Call `ogonek-deprefixify-region' on the entire buffer." + (interactive (progn (barf-if-buffer-read-only) + (list + (ogonek-read-prefix "Prefix character" 'ogonek-prefix-char) + (ogonek-read-encoding "To code" 'ogonek-prefix-to-encoding)))) + (ogonek-deprefixify-region + (point-min) (point-max) prefix-char to-encoding)) + +(provide 'ogonek) + +;;; ogonek.el ends here -- cgit v1.2.1