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b8ba871bd9
files, curses, db, regex etc that we already have). The other glue will follow shortly. Obtained from: Keith Bostic <bostic@bostic.com>
197 lines
4.3 KiB
C
197 lines
4.3 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)ex_usage.c 10.13 (Berkeley) 5/3/96";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../common/common.h"
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#include "../vi/vi.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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* PUBLIC: int ex_help __P((SCR *, EXCMD *));
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*/
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int
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ex_help(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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(void)ex_puts(sp,
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"To see the list of vi commands, enter \":viusage<CR>\"\n");
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(void)ex_puts(sp,
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"To see the list of ex commands, enter \":exusage<CR>\"\n");
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(void)ex_puts(sp,
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"For an ex command usage statement enter \":exusage [cmd]<CR>\"\n");
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(void)ex_puts(sp,
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"For a vi key usage statement enter \":viusage [key]<CR>\"\n");
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(void)ex_puts(sp, "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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* PUBLIC: int ex_usage __P((SCR *, EXCMD *));
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*/
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int
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ex_usage(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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ARGS *ap;
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EXCMDLIST const *cp;
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int newscreen;
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char *name, *p, nb[MAXCMDNAMELEN + 5];
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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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if (isupper(ap->bp[0])) {
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newscreen = 1;
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ap->bp[0] = tolower(ap->bp[0]);
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} else
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newscreen = 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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newscreen && !F_ISSET(cp, E_NEWSCREEN)) {
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if (newscreen)
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ap->bp[0] = toupper(ap->bp[0]);
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(void)ex_printf(sp, "The %.*s command is unknown\n",
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(int)ap->len, ap->bp);
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} else {
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(void)ex_printf(sp,
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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(sp,
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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 && !INTERRUPTED(sp); ++cp) {
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/*
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* The ^D command has an unprintable name.
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*
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* XXX
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* We display both capital and lower-case versions of
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* the appropriate commands -- no need to add in extra
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* room, they're all short names.
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*/
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if (cp == &cmds[C_SCROLL])
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name = "^D";
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else if (F_ISSET(cp, E_NEWSCREEN)) {
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nb[0] = '[';
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nb[1] = toupper(cp->name[0]);
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nb[2] = cp->name[0];
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nb[3] = ']';
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for (name = cp->name + 1,
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p = nb + 4; (*p++ = *name++) != '\0';);
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name = nb;
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} else
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name = cp->name;
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(void)ex_printf(sp,
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"%*s: %s\n", MAXCMDNAMELEN, name, cp->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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/*
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* ex_viusage -- :viusage [key]
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* Display vi usage strings.
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*
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* PUBLIC: int ex_viusage __P((SCR *, EXCMD *));
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*/
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int
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ex_viusage(sp, cmdp)
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SCR *sp;
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EXCMD *cmdp;
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{
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GS *gp;
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VIKEYS const *kp;
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int key;
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gp = sp->gp;
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switch (cmdp->argc) {
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case 1:
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if (cmdp->argv[0]->len != 1) {
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ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
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return (1);
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}
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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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/* Special case: ~ command. */
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if (key == '~' && O_ISSET(sp, O_TILDEOP))
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kp = &tmotion;
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else
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kp = &vikeys[key];
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if (kp->usage == NULL)
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nokey: (void)ex_printf(sp,
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"The %s key has no current meaning\n",
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KEY_NAME(sp, key));
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else
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(void)ex_printf(sp,
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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 && !INTERRUPTED(sp); ++key) {
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/* Special case: ~ command. */
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if (key == '~' && O_ISSET(sp, O_TILDEOP))
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kp = &tmotion;
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else
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kp = &vikeys[key];
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if (kp->help != NULL)
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(void)ex_printf(sp, "%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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