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1 | ;;; erc-compat.el --- ERC compatibility code for XEmacs |
2 | ||
95df8112 | 3 | ;; Copyright (C) 2002-2003, 2005-2011 Free Software Foundation, Inc. |
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4 | |
5 | ;; Author: Alex Schroeder <alex@gnu.org> | |
83dc6995 | 6 | ;; URL: http://www.emacswiki.org/cgi-bin/wiki/ERC |
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7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
4ee57b2a | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
597993cf | 11 | ;; it under the terms of the GNU General Public License as published by |
4ee57b2a GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
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14 | |
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
4ee57b2a | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
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22 | |
23 | ;;; Commentary: | |
24 | ||
25 | ;; This mostly defines stuff that cannot be worked around easily. | |
26 | ||
27 | ;;; Code: | |
28 | ||
29 | (require 'format-spec) | |
30 | ||
31 | ;;;###autoload (autoload 'erc-define-minor-mode "erc-compat") | |
32 | (defalias 'erc-define-minor-mode 'define-minor-mode) | |
33 | (put 'erc-define-minor-mode 'edebug-form-spec 'define-minor-mode) | |
34 | ||
35 | (defun erc-decode-coding-string (s coding-system) | |
36 | "Decode S using CODING-SYSTEM." | |
37 | (decode-coding-string s coding-system t)) | |
38 | ||
39 | (defun erc-encode-coding-string (s coding-system) | |
40 | "Encode S using CODING-SYSTEM. | |
41 | Return the same string, if the encoding operation is trivial. | |
42 | See `erc-encoding-coding-alist'." | |
43 | (encode-coding-string s coding-system t)) | |
44 | ||
45 | (defalias 'erc-propertize 'propertize) | |
46 | (defalias 'erc-view-mode-enter 'view-mode-enter) | |
688d0744 | 47 | (autoload 'help-function-arglist "help-fns") |
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48 | (defalias 'erc-function-arglist 'help-function-arglist) |
49 | (defalias 'erc-delete-dups 'delete-dups) | |
50 | (defalias 'erc-replace-regexp-in-string 'replace-regexp-in-string) | |
51 | ||
88406d6e MO |
52 | (defun erc-set-write-file-functions (new-val) |
53 | (set (make-local-variable 'write-file-functions) new-val)) | |
54 | ||
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55 | (defvar erc-emacs-build-time |
56 | (if (stringp emacs-build-time) | |
57 | emacs-build-time | |
58 | (format-time-string "%Y-%m-%d" emacs-build-time)) | |
59 | "Time at which Emacs was dumped out.") | |
60 | ||
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61 | ;; Emacs 21 and XEmacs do not have user-emacs-directory, but XEmacs |
62 | ;; has user-init-directory. | |
63 | (defvar erc-user-emacs-directory | |
64 | (cond ((boundp 'user-emacs-directory) | |
65 | user-emacs-directory) | |
66 | ((boundp 'user-init-directory) | |
67 | user-init-directory) | |
68 | (t "~/.emacs.d/")) | |
69 | "Directory beneath which additional per-user Emacs-specific files | |
70 | are placed. | |
71 | Note that this should end with a directory separator.") | |
72 | ||
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73 | ;; XEmacs' `replace-match' does not replace matching subexpressions in strings. |
74 | (defun erc-replace-match-subexpression-in-string | |
75 | (newtext string match subexp start &optional fixedcase literal) | |
76 | "Replace the subexpression SUBEXP of the last match in STRING with NEWTEXT. | |
77 | MATCH is the text which matched the subexpression (see `match-string'). | |
78 | START is the beginning position of the last match (see `match-beginning'). | |
79 | See `replace-match' for explanations of FIXEDCASE and LITERAL." | |
80 | (cond ((featurep 'xemacs) | |
81 | (string-match match string start) | |
82 | (replace-match newtext fixedcase literal string)) | |
83 | (t (replace-match newtext fixedcase literal string subexp)))) | |
84 | ||
526dc846 | 85 | (defalias 'erc-with-selected-window 'with-selected-window) |
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86 | (defalias 'erc-cancel-timer 'cancel-timer) |
87 | (defalias 'erc-make-obsolete 'make-obsolete) | |
88 | (defalias 'erc-make-obsolete-variable 'make-obsolete-variable) | |
89 | ||
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90 | ;; Provide a simpler replacement for `member-if' |
91 | (defun erc-member-if (predicate list) | |
92 | "Find the first item satisfying PREDICATE in LIST. | |
93 | Return the sublist of LIST whose car matches." | |
94 | (let ((ptr list)) | |
95 | (catch 'found | |
96 | (while ptr | |
97 | (when (funcall predicate (car ptr)) | |
98 | (throw 'found ptr)) | |
99 | (setq ptr (cdr ptr)))))) | |
100 | ||
101 | ;; Provide a simpler replacement for `delete-if' | |
102 | (defun erc-delete-if (predicate seq) | |
103 | "Remove all items satisfying PREDICATE in SEQ. | |
104 | This is a destructive function: it reuses the storage of SEQ | |
105 | whenever possible." | |
106 | ;; remove from car | |
107 | (while (when (funcall predicate (car seq)) | |
108 | (setq seq (cdr seq)))) | |
109 | ;; remove from cdr | |
110 | (let ((ptr seq) | |
111 | (next (cdr seq))) | |
112 | (while next | |
113 | (when (funcall predicate (car next)) | |
114 | (setcdr ptr (if (consp next) | |
115 | (cdr next) | |
116 | nil))) | |
117 | (setq ptr (cdr ptr)) | |
118 | (setq next (cdr ptr)))) | |
119 | seq) | |
120 | ||
121 | ;; Provide a simpler replacement for `remove-if-not' | |
122 | (defun erc-remove-if-not (predicate seq) | |
123 | "Remove all items not satisfying PREDICATE in SEQ. | |
124 | This is a non-destructive function; it makes a copy of SEQ to | |
125 | avoid corrupting the original SEQ." | |
126 | (let (newseq) | |
127 | (dolist (el seq) | |
128 | (when (funcall predicate el) | |
129 | (setq newseq (cons el newseq)))) | |
130 | (nreverse newseq))) | |
131 | ||
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132 | ;; Copied from cl-extra.el |
133 | (defun erc-subseq (seq start &optional end) | |
134 | "Return the subsequence of SEQ from START to END. | |
135 | If END is omitted, it defaults to the length of the sequence. | |
136 | If START or END is negative, it counts from the end." | |
137 | (if (stringp seq) (substring seq start end) | |
138 | (let (len) | |
139 | (and end (< end 0) (setq end (+ end (setq len (length seq))))) | |
140 | (if (< start 0) (setq start (+ start (or len (setq len (length seq)))))) | |
141 | (cond ((listp seq) | |
142 | (if (> start 0) (setq seq (nthcdr start seq))) | |
143 | (if end | |
144 | (let ((res nil)) | |
145 | (while (>= (setq end (1- end)) start) | |
146 | (push (pop seq) res)) | |
147 | (nreverse res)) | |
148 | (copy-sequence seq))) | |
149 | (t | |
150 | (or end (setq end (or len (length seq)))) | |
151 | (let ((res (make-vector (max (- end start) 0) nil)) | |
152 | (i 0)) | |
153 | (while (< start end) | |
154 | (aset res i (aref seq start)) | |
155 | (setq i (1+ i) start (1+ start))) | |
156 | res)))))) | |
157 | ||
158 | (provide 'erc-compat) | |
159 | ||
160 | ;;; erc-compat.el ends here | |
161 | ;; | |
162 | ;; Local Variables: | |
163 | ;; indent-tabs-mode: t | |
164 | ;; tab-width: 8 | |
165 | ;; End: | |
166 |