| /* $NetBSD: emacs.c,v 1.25 2011/07/29 15:16:33 christos Exp $ */ |
| |
| /*- |
| * Copyright (c) 1992, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Christos Zoulas of Cornell University. |
| * |
| * 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. 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. |
| */ |
| |
| #include "config.h" |
| #if !defined(lint) && !defined(SCCSID) |
| #if 0 |
| static char sccsid[] = "@(#)emacs.c 8.1 (Berkeley) 6/4/93"; |
| #else |
| __RCSID("$NetBSD: emacs.c,v 1.25 2011/07/29 15:16:33 christos Exp $"); |
| #endif |
| #endif /* not lint && not SCCSID */ |
| |
| /* |
| * emacs.c: Emacs functions |
| */ |
| #include "el.h" |
| |
| /* em_delete_or_list(): |
| * Delete character under cursor or list completions if at end of line |
| * [^D] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_delete_or_list(EditLine *el, Int c) |
| { |
| |
| if (el->el_line.cursor == el->el_line.lastchar) { |
| /* if I'm at the end */ |
| if (el->el_line.cursor == el->el_line.buffer) { |
| /* and the beginning */ |
| terminal_writec(el, c); /* then do an EOF */ |
| return CC_EOF; |
| } else { |
| /* |
| * Here we could list completions, but it is an |
| * error right now |
| */ |
| terminal_beep(el); |
| return CC_ERROR; |
| } |
| } else { |
| if (el->el_state.doingarg) |
| c_delafter(el, el->el_state.argument); |
| else |
| c_delafter1(el); |
| if (el->el_line.cursor > el->el_line.lastchar) |
| el->el_line.cursor = el->el_line.lastchar; |
| /* bounds check */ |
| return CC_REFRESH; |
| } |
| } |
| |
| |
| /* em_delete_next_word(): |
| * Cut from cursor to end of current word |
| * [M-d] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_delete_next_word(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *cp, *p, *kp; |
| |
| if (el->el_line.cursor == el->el_line.lastchar) |
| return CC_ERROR; |
| |
| cp = c__next_word(el->el_line.cursor, el->el_line.lastchar, |
| el->el_state.argument, ce__isword); |
| |
| for (p = el->el_line.cursor, kp = el->el_chared.c_kill.buf; p < cp; p++) |
| /* save the text */ |
| *kp++ = *p; |
| el->el_chared.c_kill.last = kp; |
| |
| c_delafter(el, (int)(cp - el->el_line.cursor)); /* delete after dot */ |
| if (el->el_line.cursor > el->el_line.lastchar) |
| el->el_line.cursor = el->el_line.lastchar; |
| /* bounds check */ |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_yank(): |
| * Paste cut buffer at cursor position |
| * [^Y] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_yank(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *kp, *cp; |
| |
| if (el->el_chared.c_kill.last == el->el_chared.c_kill.buf) |
| return CC_NORM; |
| |
| if (el->el_line.lastchar + |
| (el->el_chared.c_kill.last - el->el_chared.c_kill.buf) >= |
| el->el_line.limit) |
| return CC_ERROR; |
| |
| el->el_chared.c_kill.mark = el->el_line.cursor; |
| cp = el->el_line.cursor; |
| |
| /* open the space, */ |
| c_insert(el, |
| (int)(el->el_chared.c_kill.last - el->el_chared.c_kill.buf)); |
| /* copy the chars */ |
| for (kp = el->el_chared.c_kill.buf; kp < el->el_chared.c_kill.last; kp++) |
| *cp++ = *kp; |
| |
| /* if an arg, cursor at beginning else cursor at end */ |
| if (el->el_state.argument == 1) |
| el->el_line.cursor = cp; |
| |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_kill_line(): |
| * Cut the entire line and save in cut buffer |
| * [^U] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_kill_line(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *kp, *cp; |
| |
| cp = el->el_line.buffer; |
| kp = el->el_chared.c_kill.buf; |
| while (cp < el->el_line.lastchar) |
| *kp++ = *cp++; /* copy it */ |
| el->el_chared.c_kill.last = kp; |
| /* zap! -- delete all of it */ |
| el->el_line.lastchar = el->el_line.buffer; |
| el->el_line.cursor = el->el_line.buffer; |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_kill_region(): |
| * Cut area between mark and cursor and save in cut buffer |
| * [^W] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_kill_region(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *kp, *cp; |
| |
| if (!el->el_chared.c_kill.mark) |
| return CC_ERROR; |
| |
| if (el->el_chared.c_kill.mark > el->el_line.cursor) { |
| cp = el->el_line.cursor; |
| kp = el->el_chared.c_kill.buf; |
| while (cp < el->el_chared.c_kill.mark) |
| *kp++ = *cp++; /* copy it */ |
| el->el_chared.c_kill.last = kp; |
| c_delafter(el, (int)(cp - el->el_line.cursor)); |
| } else { /* mark is before cursor */ |
| cp = el->el_chared.c_kill.mark; |
| kp = el->el_chared.c_kill.buf; |
| while (cp < el->el_line.cursor) |
| *kp++ = *cp++; /* copy it */ |
| el->el_chared.c_kill.last = kp; |
| c_delbefore(el, (int)(cp - el->el_chared.c_kill.mark)); |
| el->el_line.cursor = el->el_chared.c_kill.mark; |
| } |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_copy_region(): |
| * Copy area between mark and cursor to cut buffer |
| * [M-W] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_copy_region(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *kp, *cp; |
| |
| if (!el->el_chared.c_kill.mark) |
| return CC_ERROR; |
| |
| if (el->el_chared.c_kill.mark > el->el_line.cursor) { |
| cp = el->el_line.cursor; |
| kp = el->el_chared.c_kill.buf; |
| while (cp < el->el_chared.c_kill.mark) |
| *kp++ = *cp++; /* copy it */ |
| el->el_chared.c_kill.last = kp; |
| } else { |
| cp = el->el_chared.c_kill.mark; |
| kp = el->el_chared.c_kill.buf; |
| while (cp < el->el_line.cursor) |
| *kp++ = *cp++; /* copy it */ |
| el->el_chared.c_kill.last = kp; |
| } |
| return CC_NORM; |
| } |
| |
| |
| /* em_gosmacs_transpose(): |
| * Exchange the two characters before the cursor |
| * Gosling emacs transpose chars [^T] |
| */ |
| protected el_action_t |
| em_gosmacs_transpose(EditLine *el, Int c) |
| { |
| |
| if (el->el_line.cursor > &el->el_line.buffer[1]) { |
| /* must have at least two chars entered */ |
| c = el->el_line.cursor[-2]; |
| el->el_line.cursor[-2] = el->el_line.cursor[-1]; |
| el->el_line.cursor[-1] = c; |
| return CC_REFRESH; |
| } else |
| return CC_ERROR; |
| } |
| |
| |
| /* em_next_word(): |
| * Move next to end of current word |
| * [M-f] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_next_word(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| if (el->el_line.cursor == el->el_line.lastchar) |
| return CC_ERROR; |
| |
| el->el_line.cursor = c__next_word(el->el_line.cursor, |
| el->el_line.lastchar, |
| el->el_state.argument, |
| ce__isword); |
| |
| if (el->el_map.type == MAP_VI) |
| if (el->el_chared.c_vcmd.action != NOP) { |
| cv_delfini(el); |
| return CC_REFRESH; |
| } |
| return CC_CURSOR; |
| } |
| |
| |
| /* em_upper_case(): |
| * Uppercase the characters from cursor to end of current word |
| * [M-u] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_upper_case(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *cp, *ep; |
| |
| ep = c__next_word(el->el_line.cursor, el->el_line.lastchar, |
| el->el_state.argument, ce__isword); |
| |
| for (cp = el->el_line.cursor; cp < ep; cp++) |
| if (Islower(*cp)) |
| *cp = Toupper(*cp); |
| |
| el->el_line.cursor = ep; |
| if (el->el_line.cursor > el->el_line.lastchar) |
| el->el_line.cursor = el->el_line.lastchar; |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_capitol_case(): |
| * Capitalize the characters from cursor to end of current word |
| * [M-c] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_capitol_case(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *cp, *ep; |
| |
| ep = c__next_word(el->el_line.cursor, el->el_line.lastchar, |
| el->el_state.argument, ce__isword); |
| |
| for (cp = el->el_line.cursor; cp < ep; cp++) { |
| if (Isalpha(*cp)) { |
| if (Islower(*cp)) |
| *cp = Toupper(*cp); |
| cp++; |
| break; |
| } |
| } |
| for (; cp < ep; cp++) |
| if (Isupper(*cp)) |
| *cp = Tolower(*cp); |
| |
| el->el_line.cursor = ep; |
| if (el->el_line.cursor > el->el_line.lastchar) |
| el->el_line.cursor = el->el_line.lastchar; |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_lower_case(): |
| * Lowercase the characters from cursor to end of current word |
| * [M-l] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_lower_case(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *cp, *ep; |
| |
| ep = c__next_word(el->el_line.cursor, el->el_line.lastchar, |
| el->el_state.argument, ce__isword); |
| |
| for (cp = el->el_line.cursor; cp < ep; cp++) |
| if (Isupper(*cp)) |
| *cp = Tolower(*cp); |
| |
| el->el_line.cursor = ep; |
| if (el->el_line.cursor > el->el_line.lastchar) |
| el->el_line.cursor = el->el_line.lastchar; |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_set_mark(): |
| * Set the mark at cursor |
| * [^@] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_set_mark(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| |
| el->el_chared.c_kill.mark = el->el_line.cursor; |
| return CC_NORM; |
| } |
| |
| |
| /* em_exchange_mark(): |
| * Exchange the cursor and mark |
| * [^X^X] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_exchange_mark(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *cp; |
| |
| cp = el->el_line.cursor; |
| el->el_line.cursor = el->el_chared.c_kill.mark; |
| el->el_chared.c_kill.mark = cp; |
| return CC_CURSOR; |
| } |
| |
| |
| /* em_universal_argument(): |
| * Universal argument (argument times 4) |
| * [^U] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_universal_argument(EditLine *el, Int c __attribute__((__unused__))) |
| { /* multiply current argument by 4 */ |
| |
| if (el->el_state.argument > 1000000) |
| return CC_ERROR; |
| el->el_state.doingarg = 1; |
| el->el_state.argument *= 4; |
| return CC_ARGHACK; |
| } |
| |
| |
| /* em_meta_next(): |
| * Add 8th bit to next character typed |
| * [<ESC>] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_meta_next(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| |
| el->el_state.metanext = 1; |
| return CC_ARGHACK; |
| } |
| |
| |
| /* em_toggle_overwrite(): |
| * Switch from insert to overwrite mode or vice versa |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_toggle_overwrite(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| |
| el->el_state.inputmode = (el->el_state.inputmode == MODE_INSERT) ? |
| MODE_REPLACE : MODE_INSERT; |
| return CC_NORM; |
| } |
| |
| |
| /* em_copy_prev_word(): |
| * Copy current word to cursor |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_copy_prev_word(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| Char *cp, *oldc, *dp; |
| |
| if (el->el_line.cursor == el->el_line.buffer) |
| return CC_ERROR; |
| |
| oldc = el->el_line.cursor; |
| /* does a bounds check */ |
| cp = c__prev_word(el->el_line.cursor, el->el_line.buffer, |
| el->el_state.argument, ce__isword); |
| |
| c_insert(el, (int)(oldc - cp)); |
| for (dp = oldc; cp < oldc && dp < el->el_line.lastchar; cp++) |
| *dp++ = *cp; |
| |
| el->el_line.cursor = dp;/* put cursor at end */ |
| |
| return CC_REFRESH; |
| } |
| |
| |
| /* em_inc_search_next(): |
| * Emacs incremental next search |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_inc_search_next(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| |
| el->el_search.patlen = 0; |
| return ce_inc_search(el, ED_SEARCH_NEXT_HISTORY); |
| } |
| |
| |
| /* em_inc_search_prev(): |
| * Emacs incremental reverse search |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_inc_search_prev(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| |
| el->el_search.patlen = 0; |
| return ce_inc_search(el, ED_SEARCH_PREV_HISTORY); |
| } |
| |
| |
| /* em_delete_prev_char(): |
| * Delete the character to the left of the cursor |
| * [^?] |
| */ |
| protected el_action_t |
| /*ARGSUSED*/ |
| em_delete_prev_char(EditLine *el, Int c __attribute__((__unused__))) |
| { |
| |
| if (el->el_line.cursor <= el->el_line.buffer) |
| return CC_ERROR; |
| |
| if (el->el_state.doingarg) |
| c_delbefore(el, el->el_state.argument); |
| else |
| c_delbefore1(el); |
| el->el_line.cursor -= el->el_state.argument; |
| if (el->el_line.cursor < el->el_line.buffer) |
| el->el_line.cursor = el->el_line.buffer; |
| return CC_REFRESH; |
| } |