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92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* deltochar.c - ZLE module implementing Emacs' zap-to-char
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*
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* This file is part of zsh, the Z shell.
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*
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* Copyright (c) 1996-1997 Peter Stephenson
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and to distribute modified versions of this software for any
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* purpose, provided that the above copyright notice and the following
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* two paragraphs appear in all copies of this software.
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*
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* In no event shall Peter Stephenson or the Zsh Development Group be liable
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* to any party for direct, indirect, special, incidental, or consequential
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* damages arising out of the use of this software and its documentation,
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* even if Peter Stephenson and the Zsh Development Group have been advised of
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* the possibility of such damage.
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*
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* Peter Stephenson and the Zsh Development Group specifically disclaim any
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose. The software
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* provided hereunder is on an "as is" basis, and Peter Stephenson and the
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* Zsh Development Group have no obligation to provide maintenance,
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* support, updates, enhancements, or modifications.
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*
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*/
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#include "deltochar.mdh"
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#include "deltochar.pro"
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static Widget w_deletetochar;
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/**/
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static void
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deltochar(void)
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{
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int c = getkey(0), dest = cs, ok = 0, n = zmult;
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if (n > 0) {
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while (n-- && dest != ll) {
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while (dest != ll && line[dest] != c)
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dest++;
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if (dest != ll) {
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dest++;
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if (!n) {
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foredel(dest - cs);
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ok++;
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}
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}
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}
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} else {
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/* ignore character cursor is on when scanning backwards */
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if (dest)
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dest--;
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while (n++ && dest != 0) {
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while (dest != 0 && line[dest] != c)
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dest--;
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if (line[dest] == c && !n) {
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backdel(cs - dest);
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ok++;
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}
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}
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}
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if (!ok)
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feep();
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}
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/**/
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int
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boot_deltochar(Module m)
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{
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w_deletetochar = addzlefunction("delete-to-char", deltochar, ZLE_KEEPSUFFIX);
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if (w_deletetochar)
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return 0;
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zwarnnam(m->nam, "name clash when adding ZLE function `delete-to-char'",
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NULL, 0);
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return -1;
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}
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#ifdef MODULE
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/**/
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int
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cleanup_deltochar(Module m)
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{
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deletezlefunction(w_deletetochar);
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return 0;
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}
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#endif
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