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NetBSD/usr.bin/vi/ex/excmd.c

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/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)excmd.c 8.41 (Berkeley) 3/14/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <termios.h>
#include "compat.h"
#include <db.h>
#include <regex.h>
#include "vi.h"
#include "excmd.h"
/*
* This array maps ex command names to command functions.
*
* The order in which command names are listed below is important --
* ambiguous abbreviations are resolved to be the first possible match,
* e.g. "r" means "read", not "rewind", because "read" is listed before
* "rewind".
*
* The syntax of the ex commands is unbelievably irregular, and a special
* case from beginning to end. Each command has an associated "syntax
* script" which describes the "arguments" that are possible. The script
* syntax is as follows:
*
* ! -- ! flag
* 1 -- flags: [+-]*[pl#][+-]*
* 2 -- flags: [-.+^]
* 3 -- flags: [-.+^=]
* b -- buffer
* c[01+a] -- count (0-N, 1-N, signed 1-N, address offset)
* f[N#][or] -- file (a number or N, optional or required)
* l -- line
* S -- string with file name expansion
* s -- string
* W -- word string
* w[N#][or] -- word (a number or N, optional or required)
*/
EXCMDLIST const cmds[] = {
/* C_SCROLL */
{"\004", ex_pr, E_ADDR2|E_NORC,
"",
"^D",
"scroll lines"},
/* C_BANG */
{"!", ex_bang, E_ADDR2_NONE|E_NORC,
"S",
"[line [,line]] ! command",
"filter lines through commands or run commands"},
/* C_HASH */
{"#", ex_number, E_ADDR2|E_F_PRCLEAR|E_NORC|E_SETLAST,
"ca1",
"[line [,line]] # [count] [l]",
"display numbered lines"},
/* C_SUBAGAIN */
{"&", ex_subagain, E_ADDR2|E_NORC,
"s",
"[line [,line]] & [cgr] [count] [#lp]",
"repeat the last subsitution"},
/* C_STAR */
{"*", ex_at, 0,
"b",
"* [buffer]",
"execute a buffer"},
/* C_SHIFTL */
{"<", ex_shiftl, E_ADDR2|E_AUTOPRINT|E_NORC,
"ca1",
"[line [,line]] <[<...] [count] [flags]",
"shift lines left"},
/* C_EQUAL */
{"=", ex_equal, E_ADDR1|E_NORC,
"1",
"[line] = [flags]",
"display line number"},
/* C_SHIFTR */
{">", ex_shiftr, E_ADDR2|E_AUTOPRINT|E_NORC,
"ca1",
"[line [,line]] >[>...] [count] [flags]",
"shift lines right"},
/* C_AT */
{"@", ex_at, 0,
"b",
"@ [buffer]",
"execute a buffer"},
/* C_APPEND */
{"append", ex_append, E_ADDR1|E_NORC|E_ZERO|E_ZERODEF,
"!",
"[line] a[ppend][!]",
"append input to a line"},
/* C_ABBR */
{"abbreviate", ex_abbr, E_NOGLOBAL,
"W",
"ab[brev] word replace",
"specify an input abbreviation"},
/* C_ARGS */
{"args", ex_args, E_NOGLOBAL|E_NORC,
"",
"ar[gs]",
"display file argument list"},
/* C_BG */
{"bg", ex_bg, E_NOGLOBAL|E_NORC,
"",
"bg",
"background the current screen"},
/* C_CHANGE */
{"change", ex_change, E_ADDR2|E_NORC|E_ZERODEF,
"!ca",
"[line [,line]] c[hange][!] [count]",
"change lines to input"},
/* C_CD */
{"cd", ex_cd, E_NOGLOBAL,
"!f1o",
"cd[!] [directory]",
"change the current directory"},
/* C_CHDIR */
{"chdir", ex_cd, E_NOGLOBAL,
"!f1o",
"chd[ir][!] [directory]",
"change the current directory"},
/* C_COPY */
{"copy", ex_copy, E_ADDR2|E_AUTOPRINT|E_NORC,
"l1",
"[line [,line]] co[py] line [flags]",
"copy lines elsewhere in the file"},
/* C_DELETE */
{"delete", ex_delete, E_ADDR2|E_AUTOPRINT|E_NORC,
"bca1",
"[line [,line]] d[elete] [buffer] [count] [flags]",
"delete lines from the file"},
/* C_DISPLAY */
{"display", ex_display, E_NOGLOBAL|E_NORC,
"w1r",
"display b[uffers] | s[creens] | t[ags]",
"display buffers, screens or tags"},
/* C_DIGRAPH */
{"digraph", ex_digraph, E_NOGLOBAL|E_NOPERM|E_NORC,
"",
"digraph",
"specify digraphs (not implemented)"},
/* C_EDIT */
{"edit", ex_edit, E_NOGLOBAL|E_NORC,
"!f1o",
"e[dit][!] [+cmd] [file]",
"begin editing another file"},
/* C_EX */
{"ex", ex_edit, E_NOGLOBAL|E_NORC,
"!f1o",
"ex[!] [+cmd] [file]",
"begin editing another file"},
/* C_EXUSAGE */
{"exusage", ex_usage, E_NOGLOBAL|E_NORC,
"w1o",
"[exu]sage [command]",
"display ex command usage statement"},
/* C_FILE */
{"file", ex_file, E_NOGLOBAL|E_NORC,
"f1o",
"f[ile] [name]",
"display (and optionally set) file name"},
/* C_FG */
{"fg", ex_fg, E_NOGLOBAL|E_NORC,
"f1o",
"fg [file]",
"switch the current screen and a backgrounded screen"},
/* C_GLOBAL */
{"global", ex_global, E_ADDR2_ALL|E_NOGLOBAL|E_NORC,
"!s",
"[line [,line]] g[lobal][!] [;/]RE[;/] [commands]",
"execute a global command on lines matching an RE"},
/* C_HELP */
{"help", ex_help, E_NOGLOBAL|E_NORC,
"",
"he[lp]",
"display help statement"},
/* C_INSERT */
{"insert", ex_insert, E_ADDR1|E_NORC,
"!",
"[line] i[nsert][!]",
"insert input before a line"},
/* C_JOIN */
{"join", ex_join, E_ADDR2|E_AUTOPRINT|E_NORC,
"!ca1",
"[line [,line]] j[oin][!] [count] [flags]",
"join lines into a single line"},
/* C_K */
{"k", ex_mark, E_ADDR1|E_NORC,
"w1r",
"[line] k key",
"mark a line position"},
/* C_LIST */
{"list", ex_list, E_ADDR2|E_F_PRCLEAR|E_NORC|E_SETLAST,
"ca1",
"[line [,line]] l[ist] [count] [#]",
"display lines in an unambiguous form"},
/* C_MOVE */
{"move", ex_move, E_ADDR2|E_AUTOPRINT|E_NORC,
"l",
"[line [,line]] m[ove] line",
"move lines elsewhere in the file"},
/* C_MARK */
{"mark", ex_mark, E_ADDR1|E_NORC,
"w1r",
"[line] ma[rk] key",
"mark a line position"},
/* C_MAP */
{"map", ex_map, 0,
"!W",
"map[!] [keys replace]",
"map input or commands to one or more keys"},
/* C_MKEXRC */
{"mkexrc", ex_mkexrc, E_NOGLOBAL|E_NORC,
"!f1r",
"mkexrc[!] file",
"write a .exrc file"},
/* C_NEXT */
{"next", ex_next, E_NOGLOBAL|E_NORC,
"!fN",
"n[ext][!] [file ...]",
"edit (and optionally specify) the next file"},
/* C_NUMBER */
{"number", ex_number, E_ADDR2|E_F_PRCLEAR|E_NORC|E_SETLAST,
"ca1",
"[line [,line]] nu[mber] [count] [l]",
"change display to number lines"},
/* C_OPEN */
{"open", ex_open, E_ADDR1,
"s",
"[line] o[pen] [/RE/] [flags]",
"enter \"open\" mode (not implemented)"},
/* C_PRINT */
{"print", ex_pr, E_ADDR2|E_F_PRCLEAR|E_NORC|E_SETLAST,
"ca1",
"[line [,line]] p[rint] [count] [#l]",
"display lines"},
/* C_PRESERVE */
{"preserve", ex_preserve, E_NOGLOBAL|E_NORC,
"",
"pre[serve]",
"preserve an edit session for recovery"},
/* C_PREVIOUS */
{"previous", ex_prev, E_NOGLOBAL|E_NORC,
"!",
"prev[ious][!]",
"edit the previous file in the file argument list"},
/* C_PUT */
{"put", ex_put, E_ADDR1|E_AUTOPRINT|E_NORC|E_ZERO,
"b",
"[line] pu[t] [buffer]",
"append a cut buffer to the line"},
/* C_QUIT */
{"quit", ex_quit, E_NOGLOBAL,
"!",
"q[uit][!]",
"exit ex/vi"},
/* C_READ */
{"read", ex_read, E_ADDR1|E_NORC|E_ZERO|E_ZERODEF,
"!s",
"[line] r[ead] [!cmd | [file]]",
"append input from a command or file to the line"},
/* C_RESIZE */
{"resize", ex_resize, E_NOGLOBAL|E_NORC,
"c+",
"resize [+-]rows",
"grow or shrink the current screen"},
/* C_REWIND */
{"rewind", ex_rew, E_NOGLOBAL|E_NORC,
"!",
"rew[ind][!]",
"re-edit all the files in the file argument list"},
/* C_SUBSTITUTE */
{"substitute", ex_substitute, E_ADDR2|E_NORC,
"s",
"[line [,line]] s[ubstitute] [[/;]RE[/;]/repl[/;] [cgr] [count] [#lp]]",
"substitute on lines matching an RE"},
/* C_SCRIPT */
{"script", ex_script, E_NOGLOBAL|E_NORC,
"!f1o",
"sc[ript][!] [file]",
"run a shell in a screen"},
/* C_SET */
{"set", ex_set, E_NOGLOBAL,
"wN",
"se[t] [option[=[value]]...] [nooption ...] [option? ...] [all]",
"set options (use \":set all\" to see all options)"},
/* C_SHELL */
{"shell", ex_shell, E_NOGLOBAL|E_NORC,
"",
"sh[ell]",
"suspend editing and run a shell"},
/* C_SOURCE */
{"source", ex_source, E_NOGLOBAL,
"f1r",
"so[urce] file",
"read a file of ex commands"},
/* C_SPLIT */
{"split", ex_split, E_NOGLOBAL|E_NORC,
"fNo",
"sp[lit] [file ...]",
"split the current screen into two screens"},
/* C_STOP */
{"stop", ex_stop, E_NOGLOBAL|E_NORC,
"!",
"st[op][!]",
"suspend the edit session"},
/* C_SUSPEND */
{"suspend", ex_stop, E_NOGLOBAL|E_NORC,
"!",
"su[spend][!]",
"suspend the edit session"},
/* C_T */
{"t", ex_copy, E_ADDR2|E_AUTOPRINT|E_NORC,
"l1",
"[line [,line]] t line [flags]",
"move lines elsewhere in the file"},
/* C_TAG */
{"tag", ex_tagpush, E_NOGLOBAL,
"!w1o",
"ta[g][!] [string]",
"edit the file containing the tag"},
/* C_TAGPOP */
{"tagpop", ex_tagpop, E_NOGLOBAL|E_NORC,
"!w1o",
"tagp[op][!] [number | file]",
"return to a previous tag"},
/* C_TAGTOP */
{"tagtop", ex_tagtop, E_NOGLOBAL|E_NORC,
"!",
"tagt[op][!]",
"return to the first tag"},
/* C_UNDOL */
{"Undo", ex_undol, E_AUTOPRINT|E_NOGLOBAL|E_NORC,
"",
"U[ndo]",
"undo all the changes to this line"},
/* C_UNDO */
{"undo", ex_undo, E_AUTOPRINT|E_NOGLOBAL|E_NORC,
"",
"u[ndo]",
"undo the most recent change"},
/* C_UNABBREVIATE */
{"unabbreviate",ex_unabbr, E_NOGLOBAL,
"w1r",
"una[bbrev] word",
"delete an abbreviation"},
/* C_UNMAP */
{"unmap", ex_unmap, E_NOGLOBAL,
"!w1r",
"unm[ap][!] word",
"delete an input or command map"},
/* C_VGLOBAL */
{"vglobal", ex_vglobal, E_ADDR2_ALL|E_NOGLOBAL|E_NORC,
"s",
"[line [,line]] v[global] [;/]RE[;/] [commands]",
"execute a global command on lines NOT matching an RE"},
/* C_VERSION */
{"version", ex_version, E_NOGLOBAL|E_NORC,
"",
"version",
"display the program version information"},
/* C_VISUAL_EX */
{"visual", ex_visual, E_ADDR1|E_NOGLOBAL|E_NORC|E_ZERODEF,
"2c11",
"[line] vi[sual] [-|.|+|^] [window_size] [flags]",
"enter visual (vi) mode from ex mode"},
/* C_VISUAL_VI */
{"visual", ex_edit, E_NOGLOBAL|E_NORC,
"!f1o",
"vi[sual][!] [+cmd] [file]",
"edit another file (from vi mode only)"},
/* C_VIUSAGE */
{"viusage", ex_viusage, E_NOGLOBAL|E_NORC,
"w1o",
"[viu]sage [key]",
"display vi key usage statement"},
/* C_WRITE */
{"write", ex_write, E_ADDR2_ALL|E_NOGLOBAL|E_NORC|E_ZERODEF,
"!s",
"[line [,line]] w[rite][!] [!cmd | [>>] [file]]",
"write the file"},
/* C_WQ */
{"wq", ex_wq, E_ADDR2_ALL|E_NOGLOBAL|E_NORC|E_ZERODEF,
"!s",
"[line [,line]] wq[!] [>>] [file]",
"write the file and exit"},
/* C_XIT */
{"xit", ex_xit, E_ADDR2_ALL|E_NOGLOBAL|E_NORC|E_ZERODEF,
"!f1o",
"[line [,line]] x[it][!] [file]",
"exit"},
/* C_YANK */
{"yank", ex_yank, E_ADDR2|E_NORC,
"bca",
"[line [,line]] ya[nk] [buffer] [count]",
"copy lines to a cut buffer"},
/* C_Z */
{"z", ex_z, E_ADDR1|E_NOGLOBAL|E_NORC,
"3c01",
"[line] z [-|.|+|^|=] [count] [flags]",
"display different screens of the file"},
/* C_SUBTILDE */
{"~", ex_subtilde, E_ADDR2|E_NORC,
"s",
"[line [,line]] ~ [cgr] [count] [#lp]",
"replace previous RE with previous replacement string,"},
{NULL},
};
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