diff options
Diffstat (limited to 'usr.bin/vi/common/screen.c')
| -rw-r--r-- | usr.bin/vi/common/screen.c | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/usr.bin/vi/common/screen.c b/usr.bin/vi/common/screen.c new file mode 100644 index 000000000000..d3e27e7da217 --- /dev/null +++ b/usr.bin/vi/common/screen.c @@ -0,0 +1,309 @@ +/*- + * Copyright (c) 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[] = "@(#)screen.c 8.64 (Berkeley) 8/14/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/time.h> + +#include <bitstring.h> +#include <errno.h> +#include <limits.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <termios.h> +#include <unistd.h> + +#include "compat.h" +#include <db.h> +#include <regex.h> + +#include "vi.h" +#include "../vi/vcmd.h" +#include "excmd.h" +#include "../ex/tag.h" + +/* + * screen_init -- + * Do the default initialization of an SCR structure. + */ +int +screen_init(orig, spp, flags) + SCR *orig, **spp; + u_int flags; +{ + SCR *sp; + size_t len; + + *spp = NULL; + CALLOC_RET(orig, sp, SCR *, 1, sizeof(SCR)); + *spp = sp; + +/* INITIALIZED AT SCREEN CREATE. */ + sp->gp = __global_list; /* All ref the GS structure. */ + + LIST_INIT(&sp->msgq); + CIRCLEQ_INIT(&sp->frefq); + + sp->ccnt = 2; /* Anything > 1 */ + + FD_ZERO(&sp->rdfd); + + /* + * XXX + * sp->defscroll is initialized by the opts_init() code because + * we don't have the option information yet. + */ + + sp->tiqp = &sp->__tiq; + CIRCLEQ_INIT(&sp->__tiq); + +/* PARTIALLY OR COMPLETELY COPIED FROM PREVIOUS SCREEN. */ + if (orig == NULL) { + sp->searchdir = NOTSET; + + switch (flags & S_SCREENS) { + case S_EX: + if (sex_screen_init(sp)) + return (1); + break; + case S_VI_CURSES: + if (svi_screen_init(sp)) + return (1); + break; + case S_VI_XAW: + if (xaw_screen_init(sp)) + return (1); + break; + default: + abort(); + } + + sp->flags = flags; + } else { + if (orig->alt_name != NULL && + (sp->alt_name = strdup(orig->alt_name)) == NULL) + goto mem; + + /* Retain all searching/substitution information. */ + if (F_ISSET(orig, S_SRE_SET)) { + F_SET(sp, S_SRE_SET); + sp->sre = orig->sre; + } + if (F_ISSET(orig, S_SUBRE_SET)) { + F_SET(sp, S_SUBRE_SET); + sp->subre = orig->subre; + } + sp->searchdir = orig->searchdir == NOTSET ? NOTSET : FORWARD; + + if (orig->repl_len) { + MALLOC(sp, sp->repl, char *, orig->repl_len); + if (sp->repl == NULL) + goto mem; + sp->repl_len = orig->repl_len; + memmove(sp->repl, orig->repl, orig->repl_len); + } + if (orig->newl_len) { + len = orig->newl_len * sizeof(size_t); + MALLOC(sp, sp->newl, size_t *, len); + if (sp->newl == NULL) + goto mem; + sp->newl_len = orig->newl_len; + sp->newl_cnt = orig->newl_cnt; + memmove(sp->newl, orig->newl, len); + } + + sp->saved_vi_mode = orig->saved_vi_mode; + + if (opts_copy(orig, sp)) { +mem: msgq(orig, M_SYSERR, "new screen attributes"); + (void)screen_end(sp); + return (1); + } + + sp->s_bell = orig->s_bell; + sp->s_bg = orig->s_bg; + sp->s_busy = orig->s_busy; + sp->s_change = orig->s_change; + sp->s_clear = orig->s_clear; + sp->s_colpos = orig->s_colpos; + sp->s_column = orig->s_column; + sp->s_confirm = orig->s_confirm; + sp->s_crel = orig->s_crel; + sp->s_edit = orig->s_edit; + sp->s_end = orig->s_end; + sp->s_ex_cmd = orig->s_ex_cmd; + sp->s_ex_run = orig->s_ex_run; + sp->s_ex_write = orig->s_ex_write; + sp->s_fg = orig->s_fg; + sp->s_fill = orig->s_fill; + sp->s_get = orig->s_get; + sp->s_key_read = orig->s_key_read; + sp->s_fmap = orig->s_fmap; + sp->s_optchange = orig->s_optchange; + sp->s_position = orig->s_position; + sp->s_rabs = orig->s_rabs; + sp->s_rcm = orig->s_rcm; + sp->s_refresh = orig->s_refresh; + sp->s_scroll = orig->s_scroll; + sp->s_split = orig->s_split; + sp->s_suspend = orig->s_suspend; + sp->s_window = orig->s_window; + + F_SET(sp, F_ISSET(orig, S_SCREENS)); + } + + if (xaw_screen_copy(orig, sp)) /* Init S_VI_XAW screen. */ + return (1); + if (svi_screen_copy(orig, sp)) /* Init S_VI_CURSES screen. */ + return (1); + if (sex_screen_copy(orig, sp)) /* Init S_EX screen. */ + return (1); + if (v_screen_copy(orig, sp)) /* Init vi. */ + return (1); + if (ex_screen_copy(orig, sp)) /* Init ex. */ + return (1); + + *spp = sp; + return (0); +} + +/* + * screen_end -- + * Release a screen. + */ +int +screen_end(sp) + SCR *sp; +{ + int rval; + + rval = 0; + if (xaw_screen_end(sp)) /* End S_VI_XAW screen. */ + rval = 1; + if (svi_screen_end(sp)) /* End S_VI_CURSES screen. */ + rval = 1; + if (sex_screen_end(sp)) /* End S_EX screen. */ + rval = 1; + if (v_screen_end(sp)) /* End vi. */ + rval = 1; + if (ex_screen_end(sp)) /* End ex. */ + rval = 1; + + /* Free FREF's. */ + { FREF *frp; + while ((frp = sp->frefq.cqh_first) != (FREF *)&sp->frefq) { + CIRCLEQ_REMOVE(&sp->frefq, frp, q); + if (frp->name != NULL) + free(frp->name); + if (frp->tname != NULL) + free(frp->tname); + FREE(frp, sizeof(FREF)); + } + } + + /* Free file names. */ + { char **ap; + if (!F_ISSET(sp, S_ARGNOFREE) && sp->argv != NULL) { + for (ap = sp->argv; *ap != NULL; ++ap) + free(*ap); + free(sp->argv); + } + } + + /* Free any text input. */ + text_lfree(&sp->__tiq); + + /* Free any script information. */ + if (F_ISSET(sp, S_SCRIPT)) + sscr_end(sp); + + /* Free alternate file name. */ + if (sp->alt_name != NULL) + free(sp->alt_name); + + /* Free up search information. */ + if (sp->repl != NULL) + FREE(sp->repl, sp->repl_len); + if (sp->newl != NULL) + FREE(sp->newl, sp->newl_len); + + /* Free all the options */ + opts_free(sp); + + /* + * Free the message chain last, so previous failures have a place + * to put messages. Copy messages to (in order) a related screen, + * any screen, the global area. + */ + { SCR *c_sp; MSG *mp, *next; + if ((c_sp = sp->q.cqe_prev) != (void *)&sp->gp->dq) { + if (F_ISSET(sp, S_BELLSCHED)) + F_SET(c_sp, S_BELLSCHED); + } else if ((c_sp = sp->q.cqe_next) != (void *)&sp->gp->dq) { + if (F_ISSET(sp, S_BELLSCHED)) + F_SET(c_sp, S_BELLSCHED); + } else if ((c_sp = + sp->gp->hq.cqh_first) != (void *)&sp->gp->hq) { + if (F_ISSET(sp, S_BELLSCHED)) + F_SET(c_sp, S_BELLSCHED); + } else { + c_sp = NULL; + if (F_ISSET(sp, S_BELLSCHED)) + F_SET(sp->gp, G_BELLSCHED); + } + + for (mp = sp->msgq.lh_first; mp != NULL; mp = next) { + if (!F_ISSET(mp, M_EMPTY)) + msg_app(sp->gp, c_sp, + mp->flags & M_INV_VIDEO, mp->mbuf, mp->len); + next = mp->q.le_next; + if (mp->mbuf != NULL) + FREE(mp->mbuf, mp->blen); + FREE(mp, sizeof(MSG)); + } + } + + /* Remove the screen from the displayed queue. */ + CIRCLEQ_REMOVE(&sp->gp->dq, sp, q); + + /* Free the screen itself. */ + FREE(sp, sizeof(SCR)); + + return (rval); +} |