165 lines
4.6 KiB
C
165 lines
4.6 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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/* from: static char sccsid[] = "@(#)ex_usage.c 8.11 (Berkeley) 12/17/93"; */
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static char *rcsid = "$Id: ex_usage.c,v 1.2 1994/01/24 06:40:45 cgd Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <string.h>
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#include "vi.h"
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#include "excmd.h"
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#include "vcmd.h"
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/*
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* ex_help -- :help
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* Display help message.
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*/
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int
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ex_help(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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(void)ex_printf(EXCOOKIE,
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"To see the list of vi commands, enter \":viusage<CR>\"\n");
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(void)ex_printf(EXCOOKIE,
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"To see the list of ex commands, enter \":exusage<CR>\"\n");
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(void)ex_printf(EXCOOKIE,
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"For an ex command usage statement enter \":exusage [cmd]<CR>\"\n");
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(void)ex_printf(EXCOOKIE,
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"For a vi key usage statement enter \":viusage [key]<CR>\"\n");
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(void)ex_printf(EXCOOKIE, "To exit, enter \":q!\"\n");
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return (0);
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}
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/*
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* ex_usage -- :exusage [cmd]
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* Display ex usage strings.
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*/
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int
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ex_usage(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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ARGS *ap;
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EXCMDLIST const *cp;
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switch (cmdp->argc) {
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case 1:
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ap = cmdp->argv[0];
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for (cp = cmds; cp->name != NULL &&
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memcmp(ap->bp, cp->name, ap->len); ++cp);
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if (cp->name == NULL)
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(void)ex_printf(EXCOOKIE,
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"The %.*s command is unknown.",
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(int)ap->len, ap->bp);
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else {
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(void)ex_printf(EXCOOKIE,
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"Command: %s\n Usage: %s\n", cp->help, cp->usage);
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/*
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* !!!
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* The "visual" command has two modes, one from ex,
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* one from the vi colon line. Don't ask.
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*/
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if (cp != &cmds[C_VISUAL_EX] &&
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cp != &cmds[C_VISUAL_VI])
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break;
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if (cp == &cmds[C_VISUAL_EX])
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cp = &cmds[C_VISUAL_VI];
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else
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cp = &cmds[C_VISUAL_EX];
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(void)ex_printf(EXCOOKIE,
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"Command: %s\n Usage: %s\n", cp->help, cp->usage);
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}
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break;
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case 0:
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for (cp = cmds; cp->name != NULL; ++cp)
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(void)ex_printf(EXCOOKIE,
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"%*s: %s\n", MAXCMDNAMELEN, cp->name, cp->help);
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break;
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default:
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abort();
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}
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return (0);
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}
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/*
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* ex_viusage -- :viusage [key]
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* Display vi usage strings.
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*/
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int
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ex_viusage(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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VIKEYS const *kp;
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int key;
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switch (cmdp->argc) {
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case 1:
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key = cmdp->argv[0]->bp[0];
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if (key > MAXVIKEY)
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goto nokey;
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/* Special case: '[' and ']' commands. */
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if ((key == '[' || key == ']') && cmdp->argv[0]->bp[1] != key)
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goto nokey;
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kp = &vikeys[key];
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if (kp->func == NULL)
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nokey: (void)ex_printf(EXCOOKIE,
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"The %s key has no current meaning",
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charname(sp, key));
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else
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(void)ex_printf(EXCOOKIE,
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" Key:%s%s\nUsage: %s\n",
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isblank(*kp->help) ? "" : " ", kp->help, kp->usage);
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break;
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case 0:
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for (key = 0; key <= MAXVIKEY; ++key) {
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kp = &vikeys[key];
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if (kp->help != NULL)
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(void)ex_printf(EXCOOKIE, "%s\n", kp->help);
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}
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break;
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default:
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abort();
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}
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return (0);
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}
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