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-rw-r--r--lib/libedit/term.c1378
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diff --git a/lib/libedit/term.c b/lib/libedit/term.c
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index 0000000..90ebf95
--- /dev/null
+++ b/lib/libedit/term.c
@@ -0,0 +1,1378 @@
+/*-
+ * 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. 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.
+ */
+
+#if !defined(lint) && !defined(SCCSID)
+static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95";
+#endif /* not lint && not SCCSID */
+
+/*
+ * term.c: Editor/termcap-curses interface
+ * We have to declare a static variable here, since the
+ * termcap putchar routine does not take an argument!
+ */
+#include "sys.h"
+#include <stdio.h>
+#include <signal.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termcap.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#include "el.h"
+
+/*
+ * IMPORTANT NOTE: these routines are allowed to look at the current screen
+ * and the current possition assuming that it is correct. If this is not
+ * true, then the update will be WRONG! This is (should be) a valid
+ * assumption...
+ */
+
+#define TC_BUFSIZE 2048
+
+#define GoodStr(a) (el->el_term.t_str[a] != NULL && \
+ el->el_term.t_str[a][0] != '\0')
+#define Str(a) el->el_term.t_str[a]
+#define Val(a) el->el_term.t_val[a]
+
+private struct termcapstr {
+ char *name;
+ char *long_name;
+} tstr[] = {
+
+#define T_al 0
+ { "al", "add new blank line" },
+#define T_bl 1
+ { "bl", "audible bell" },
+#define T_cd 2
+ { "cd", "clear to bottom" },
+#define T_ce 3
+ { "ce", "clear to end of line" },
+#define T_ch 4
+ { "ch", "cursor to horiz pos" },
+#define T_cl 5
+ { "cl", "clear screen" },
+#define T_dc 6
+ { "dc", "delete a character" },
+#define T_dl 7
+ { "dl", "delete a line" },
+#define T_dm 8
+ { "dm", "start delete mode" },
+#define T_ed 9
+ { "ed", "end delete mode" },
+#define T_ei 10
+ { "ei", "end insert mode" },
+#define T_fs 11
+ { "fs", "cursor from status line" },
+#define T_ho 12
+ { "ho", "home cursor" },
+#define T_ic 13
+ { "ic", "insert character" },
+#define T_im 14
+ { "im", "start insert mode" },
+#define T_ip 15
+ { "ip", "insert padding" },
+#define T_kd 16
+ { "kd", "sends cursor down" },
+#define T_kl 17
+ { "kl", "sends cursor left" },
+#define T_kr 18
+ { "kr", "sends cursor right" },
+#define T_ku 19
+ { "ku", "sends cursor up" },
+#define T_md 20
+ { "md", "begin bold" },
+#define T_me 21
+ { "me", "end attributes" },
+#define T_nd 22
+ { "nd", "non destructive space" },
+#define T_se 23
+ { "se", "end standout" },
+#define T_so 24
+ { "so", "begin standout" },
+#define T_ts 25
+ { "ts", "cursor to status line" },
+#define T_up 26
+ { "up", "cursor up one" },
+#define T_us 27
+ { "us", "begin underline" },
+#define T_ue 28
+ { "ue", "end underline" },
+#define T_vb 29
+ { "vb", "visible bell" },
+#define T_DC 30
+ { "DC", "delete multiple chars" },
+#define T_DO 31
+ { "DO", "cursor down multiple" },
+#define T_IC 32
+ { "IC", "insert multiple chars" },
+#define T_LE 33
+ { "LE", "cursor left multiple" },
+#define T_RI 34
+ { "RI", "cursor right multiple" },
+#define T_UP 35
+ { "UP", "cursor up multiple" },
+#define T_str 36
+ { NULL, NULL }
+};
+
+private struct termcapval {
+ char *name;
+ char *long_name;
+} tval[] = {
+#define T_pt 0
+ { "pt", "has physical tabs" },
+#define T_li 1
+ { "li", "Number of lines" },
+#define T_co 2
+ { "co", "Number of columns" },
+#define T_km 3
+ { "km", "Has meta key" },
+#define T_xt 4
+ { "xt", "Tab chars destructive" },
+#define T_MT 5
+ { "MT", "Has meta key" }, /* XXX? */
+#define T_val 6
+ { NULL, NULL, }
+};
+
+/* do two or more of the attributes use me */
+
+private void term_rebuffer_display __P((EditLine *));
+private void term_free_display __P((EditLine *));
+private void term_alloc_display __P((EditLine *));
+private void term_alloc __P((EditLine *,
+ struct termcapstr *, char *));
+private void term_init_arrow __P((EditLine *));
+private void term_reset_arrow __P((EditLine *));
+
+
+private FILE *term_outfile = NULL; /* XXX: How do we fix that? */
+
+
+/* term_setflags():
+ * Set the terminal capability flags
+ */
+private void
+term_setflags(el)
+ EditLine *el;
+{
+ EL_FLAGS = 0;
+ if (el->el_tty.t_tabs)
+ EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
+
+ EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
+ EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
+ EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
+ EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
+ TERM_CAN_INSERT : 0;
+ EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
+
+ if (GoodStr(T_me) && GoodStr(T_ue))
+ EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? TERM_CAN_ME : 0;
+ else
+ EL_FLAGS &= ~TERM_CAN_ME;
+ if (GoodStr(T_me) && GoodStr(T_se))
+ EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? TERM_CAN_ME : 0;
+
+
+#ifdef DEBUG_SCREEN
+ if (!EL_CAN_UP) {
+ (void) fprintf(el->el_errfile, "WARNING: Your terminal cannot move up.\n");
+ (void) fprintf(el->el_errfile, "Editing may be odd for long lines.\n");
+ }
+ if (!EL_CAN_CEOL)
+ (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
+ if (!EL_CAN_DELETE)
+ (void) fprintf(el->el_errfile, "no delete char capability.\n");
+ if (!EL_CAN_INSERT)
+ (void) fprintf(el->el_errfile, "no insert char capability.\n");
+#endif /* DEBUG_SCREEN */
+}
+
+
+/* term_init():
+ * Initialize the terminal stuff
+ */
+protected int
+term_init(el)
+ EditLine *el;
+{
+ el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE);
+ el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE);
+ el->el_term.t_fkey = (fkey_t *) el_malloc(4 * sizeof(fkey_t));
+ (void) memset(el->el_term.t_fkey, 0, 4 * sizeof(fkey_t));
+ el->el_term.t_loc = 0;
+ el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char*));
+ (void) memset(el->el_term.t_str, 0, T_str * sizeof(char*));
+ el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int));
+ (void) memset(el->el_term.t_val, 0, T_val * sizeof(int));
+ term_outfile = el->el_outfile;
+ (void) term_set(el, NULL);
+ term_init_arrow(el);
+ return 0;
+}
+
+/* term_end():
+ * Clean up the terminal stuff
+ */
+protected void
+term_end(el)
+ EditLine *el;
+{
+ el_free((ptr_t) el->el_term.t_buf);
+ el->el_term.t_buf = NULL;
+ el_free((ptr_t) el->el_term.t_cap);
+ el->el_term.t_cap = NULL;
+ el->el_term.t_loc = 0;
+ el_free((ptr_t) el->el_term.t_str);
+ el->el_term.t_str = NULL;
+ el_free((ptr_t) el->el_term.t_val);
+ el->el_term.t_val = NULL;
+ term_free_display(el);
+}
+
+
+/* term_alloc():
+ * Maintain a string pool for termcap strings
+ */
+private void
+term_alloc(el, t, cap)
+ EditLine *el;
+ struct termcapstr *t;
+ char *cap;
+{
+ char termbuf[TC_BUFSIZE];
+ int tlen, clen;
+ char **tlist = el->el_term.t_str;
+ char **tmp, **str = &tlist[t - tstr];
+
+ if (cap == NULL || *cap == '\0') {
+ *str = NULL;
+ return;
+ }
+ else
+ clen = strlen(cap);
+
+ tlen = *str == NULL ? 0 : strlen(*str);
+
+ /*
+ * New string is shorter; no need to allocate space
+ */
+ if (clen <= tlen) {
+ (void)strcpy(*str, cap); /* XXX strcpy is safe */
+ return;
+ }
+
+ /*
+ * New string is longer; see if we have enough space to append
+ */
+ if (el->el_term.t_loc + 3 < TC_BUFSIZE) {
+ /* XXX strcpy is safe */
+ (void)strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap);
+ el->el_term.t_loc += clen + 1; /* one for \0 */
+ return;
+ }
+
+ /*
+ * Compact our buffer; no need to check compaction, cause we know it
+ * fits...
+ */
+ tlen = 0;
+ for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
+ if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
+ char *ptr;
+
+ for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
+ continue;
+ termbuf[tlen++] = '\0';
+ }
+ memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE);
+ el->el_term.t_loc = tlen;
+ if (el->el_term.t_loc + 3 >= TC_BUFSIZE) {
+ (void) fprintf(el->el_errfile, "Out of termcap string space.\n");
+ return;
+ }
+ /* XXX strcpy is safe */
+ (void)strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap);
+ el->el_term.t_loc += clen + 1; /* one for \0 */
+ return;
+} /* end term_alloc */
+
+
+/* term_rebuffer_display():
+ * Rebuffer the display after the screen changed size
+ */
+private void
+term_rebuffer_display(el)
+ EditLine *el;
+{
+ coord_t *c = &el->el_term.t_size;
+
+ term_free_display(el);
+
+ /* make this public, -1 to avoid wraps */
+ c->h = Val(T_co) - 1;
+ c->v = (EL_BUFSIZ * 4) / c->h + 1;
+
+ term_alloc_display(el);
+} /* end term_rebuffer_display */
+
+
+/* term_alloc_display():
+ * Allocate a new display.
+ */
+private void
+term_alloc_display(el)
+ EditLine *el;
+{
+ int i;
+ char **b;
+ coord_t *c = &el->el_term.t_size;
+
+ b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
+ for (i = 0; i < c->v; i++)
+ b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
+ b[c->v] = NULL;
+ el->el_display = b;
+
+ b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
+ for (i = 0; i < c->v; i++)
+ b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
+ b[c->v] = NULL;
+ el->el_vdisplay = b;
+
+} /* end term_alloc_display */
+
+
+/* term_free_display():
+ * Free the display buffers
+ */
+private void
+term_free_display(el)
+ EditLine *el;
+{
+ char **b;
+ char **bufp;
+
+ b = el->el_display;
+ el->el_display = NULL;
+ if (b != NULL) {
+ for (bufp = b; *bufp != NULL; bufp++)
+ el_free((ptr_t) *bufp);
+ el_free((ptr_t) b);
+ }
+ b = el->el_vdisplay;
+ el->el_vdisplay = NULL;
+ if (b != NULL) {
+ for (bufp = b; *bufp != NULL; bufp++)
+ el_free((ptr_t) * bufp);
+ el_free((ptr_t) b);
+ }
+} /* end term_free_display */
+
+
+/* term_move_to_line():
+ * move to line <where> (first line == 0)
+ * as efficiently as possible
+ */
+protected void
+term_move_to_line(el, where)
+ EditLine *el;
+ int where;
+{
+ int del, i;
+
+ if (where == el->el_cursor.v)
+ return;
+
+ if (where > el->el_term.t_size.v) {
+#ifdef DEBUG_SCREEN
+ (void) fprintf(el->el_errfile,
+ "term_move_to_line: where is ridiculous: %d\r\n", where);
+#endif /* DEBUG_SCREEN */
+ return;
+ }
+
+ if ((del = where - el->el_cursor.v) > 0) {
+ if ((del > 1) && GoodStr(T_DO))
+ (void) tputs(tgoto(Str(T_DO), del, del), del, term__putc);
+ else {
+ for (i = 0; i < del; i++)
+ term__putc('\n');
+ el->el_cursor.h = 0; /* because the \n will become \r\n */
+ }
+ }
+ else { /* del < 0 */
+ if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
+ (void) tputs(tgoto(Str(T_UP), -del, -del), -del, term__putc);
+ else {
+ if (GoodStr(T_up))
+ for (i = 0; i < -del; i++)
+ (void) tputs(Str(T_up), 1, term__putc);
+ }
+ }
+ el->el_cursor.v = where; /* now where is here */
+} /* end term_move_to_line */
+
+
+/* term_move_to_char():
+ * Move to the character position specified
+ */
+protected void
+term_move_to_char(el, where)
+ EditLine *el;
+ int where;
+{
+ int del, i;
+
+mc_again:
+ if (where == el->el_cursor.h)
+ return;
+
+ if (where > (el->el_term.t_size.h + 1)) {
+#ifdef DEBUG_SCREEN
+ (void) fprintf(el->el_errfile,
+ "term_move_to_char: where is riduculous: %d\r\n", where);
+#endif /* DEBUG_SCREEN */
+ return;
+ }
+
+ if (!where) { /* if where is first column */
+ term__putc('\r'); /* do a CR */
+ el->el_cursor.h = 0;
+ return;
+ }
+
+ del = where - el->el_cursor.h;
+
+ if ((del < -4 || del > 4) && GoodStr(T_ch))
+ /* go there directly */
+ (void) tputs(tgoto(Str(T_ch), where, where), where, term__putc);
+ else {
+ if (del > 0) { /* moving forward */
+ if ((del > 4) && GoodStr(T_RI))
+ (void) tputs(tgoto(Str(T_RI), del, del), del, term__putc);
+ else {
+ if (EL_CAN_TAB) { /* if I can do tabs, use them */
+ if ((el->el_cursor.h & 0370) != (where & 0370)) {
+ /* if not within tab stop */
+ for (i = (el->el_cursor.h & 0370);
+ i < (where & 0370); i += 8)
+ term__putc('\t'); /* then tab over */
+ el->el_cursor.h = where & 0370;
+ }
+ }
+ /* it's usually cheaper to just write the chars, so we do. */
+
+ /* NOTE THAT term_overwrite() WILL CHANGE el->el_cursor.h!!! */
+ term_overwrite(el,
+ &el->el_display[el->el_cursor.v][el->el_cursor.h],
+ where - el->el_cursor.h);
+
+ }
+ }
+ else { /* del < 0 := moving backward */
+ if ((-del > 4) && GoodStr(T_LE))
+ (void) tputs(tgoto(Str(T_LE), -del, -del), -del, term__putc);
+ else { /* can't go directly there */
+ /* if the "cost" is greater than the "cost" from col 0 */
+ if (EL_CAN_TAB ? (-del > ((where >> 3) + (where & 07)))
+ : (-del > where)) {
+ term__putc('\r'); /* do a CR */
+ el->el_cursor.h = 0;
+ goto mc_again; /* and try again */
+ }
+ for (i = 0; i < -del; i++)
+ term__putc('\b');
+ }
+ }
+ }
+ el->el_cursor.h = where; /* now where is here */
+} /* end term_move_to_char */
+
+
+/* term_overwrite():
+ * Overstrike num characters
+ */
+protected void
+term_overwrite(el, cp, n)
+ EditLine *el;
+ char *cp;
+ int n;
+{
+ if (n <= 0)
+ return; /* catch bugs */
+
+ if (n > (el->el_term.t_size.h + 1)) {
+#ifdef DEBUG_SCREEN
+ (void) fprintf(el->el_errfile, "term_overwrite: n is riduculous: %d\r\n", n);
+#endif /* DEBUG_SCREEN */
+ return;
+ }
+
+ do {
+ term__putc(*cp++);
+ el->el_cursor.h++;
+ } while (--n);
+} /* end term_overwrite */
+
+
+/* term_deletechars():
+ * Delete num characters
+ */
+protected void
+term_deletechars(el, num)
+ EditLine *el;
+ int num;
+{
+ if (num <= 0)
+ return;
+
+ if (!EL_CAN_DELETE) {
+#ifdef DEBUG_EDIT
+ (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
+#endif /* DEBUG_EDIT */
+ return;
+ }
+
+ if (num > el->el_term.t_size.h) {
+#ifdef DEBUG_SCREEN
+ (void) fprintf(el->el_errfile,
+ "term_deletechars: num is riduculous: %d\r\n", num);
+#endif /* DEBUG_SCREEN */
+ return;
+ }
+
+ if (GoodStr(T_DC)) /* if I have multiple delete */
+ if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more expen. */
+ (void) tputs(tgoto(Str(T_DC), num, num), num, term__putc);
+ return;
+ }
+
+ if (GoodStr(T_dm)) /* if I have delete mode */
+ (void) tputs(Str(T_dm), 1, term__putc);
+
+ if (GoodStr(T_dc)) /* else do one at a time */
+ while (num--)
+ (void) tputs(Str(T_dc), 1, term__putc);
+
+ if (GoodStr(T_ed)) /* if I have delete mode */
+ (void) tputs(Str(T_ed), 1, term__putc);
+} /* end term_deletechars */
+
+
+/* term_insertwrite():
+ * Puts terminal in insert character mode or inserts num
+ * characters in the line
+ */
+protected void
+term_insertwrite(el, cp, num)
+ EditLine *el;
+ char *cp;
+ int num;
+{
+ if (num <= 0)
+ return;
+ if (!EL_CAN_INSERT) {
+#ifdef DEBUG_EDIT
+ (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
+#endif /* DEBUG_EDIT */
+ return;
+ }
+
+ if (num > el->el_term.t_size.h) {
+#ifdef DEBUG_SCREEN
+ (void) fprintf(el->el_errfile, "StartInsert: num is riduculous: %d\r\n", num);
+#endif /* DEBUG_SCREEN */
+ return;
+ }
+
+ if (GoodStr(T_IC)) /* if I have multiple insert */
+ if ((num > 1) || !GoodStr(T_ic)) { /* if ic would be more expen. */
+ (void) tputs(tgoto(Str(T_IC), num, num), num, term__putc);
+ term_overwrite(el, cp, num); /* this updates el_cursor.h */
+ return;
+ }
+
+ if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
+ (void) tputs(Str(T_im), 1, term__putc);
+
+ el->el_cursor.h += num;
+ do
+ term__putc(*cp++);
+ while (--num);
+
+ if (GoodStr(T_ip)) /* have to make num chars insert */
+ (void) tputs(Str(T_ip), 1, term__putc);
+
+ (void) tputs(Str(T_ei), 1, term__putc);
+ return;
+ }
+
+ do {
+ if (GoodStr(T_ic)) /* have to make num chars insert */
+ (void) tputs(Str(T_ic), 1, term__putc); /* insert a char */
+
+ term__putc(*cp++);
+
+ el->el_cursor.h++;
+
+ if (GoodStr(T_ip)) /* have to make num chars insert */
+ (void) tputs(Str(T_ip), 1, term__putc);/* pad the inserted char */
+
+ } while (--num);
+} /* end term_insertwrite */
+
+
+/* term_clear_EOL():
+ * clear to end of line. There are num characters to clear
+ */
+protected void
+term_clear_EOL(el, num)
+ EditLine *el;
+ int num;
+{
+ int i;
+
+ if (EL_CAN_CEOL && GoodStr(T_ce))
+ (void) tputs(Str(T_ce), 1, term__putc);
+ else {
+ for (i = 0; i < num; i++)
+ term__putc(' ');
+ el->el_cursor.h += num; /* have written num spaces */
+ }
+} /* end term_clear_EOL */
+
+
+/* term_clear_screen():
+ * Clear the screen
+ */
+protected void
+term_clear_screen(el)
+ EditLine *el;
+{ /* clear the whole screen and home */
+ if (GoodStr(T_cl))
+ /* send the clear screen code */
+ (void) tputs(Str(T_cl), Val(T_li), term__putc);
+ else if (GoodStr(T_ho) && GoodStr(T_cd)) {
+ (void) tputs(Str(T_ho), Val(T_li), term__putc); /* home */
+ /* clear to bottom of screen */
+ (void) tputs(Str(T_cd), Val(T_li), term__putc);
+ }
+ else {
+ term__putc('\r');
+ term__putc('\n');
+ }
+} /* end term_clear_screen */
+
+
+/* term_beep():
+ * Beep the way the terminal wants us
+ */
+protected void
+term_beep(el)
+ EditLine *el;
+{
+ if (GoodStr(T_vb))
+ (void) tputs(Str(T_vb), 1, term__putc); /* visible bell */
+ else if (GoodStr(T_bl))
+ /* what termcap says we should use */
+ (void) tputs(Str(T_bl), 1, term__putc);
+ else
+ term__putc('\007'); /* an ASCII bell; ^G */
+} /* end term_beep */
+
+
+#ifdef notdef
+/* term_clear_to_bottom():
+ * Clear to the bottom of the screen
+ */
+protected void
+term_clear_to_bottom(el)
+ EditLine *el;
+{
+ if (GoodStr(T_cd))
+ (void) tputs(Str(T_cd), Val(T_li), term__putc);
+ else if (GoodStr(T_ce))
+ (void) tputs(Str(T_ce), Val(T_li), term__putc);
+} /* end term_clear_to_bottom */
+#endif
+
+
+/* term_set():
+ * Read in the terminal capabilities from the requested terminal
+ */
+protected int
+term_set(el, term)
+ EditLine *el;
+ char *term;
+{
+ int i;
+ char buf[TC_BUFSIZE];
+ char *area;
+ struct termcapstr *t;
+ sigset_t oset, nset;
+ int lins, cols;
+
+ (void) sigemptyset(&nset);
+ (void) sigaddset(&nset, SIGWINCH);
+ (void) sigprocmask(SIG_BLOCK, &nset, &oset);
+
+ area = buf;
+
+
+ if (term == NULL)
+ term = getenv("TERM");
+
+ if (!term || !term[0])
+ term = "dumb";
+
+ memset(el->el_term.t_cap, 0, TC_BUFSIZE);
+
+ i = tgetent(el->el_term.t_cap, term);
+
+ if (i <= 0) {
+ if (i == -1)
+ (void) fprintf(el->el_errfile, "Cannot read termcap database;\n");
+ else if (i == 0)
+ (void) fprintf(el->el_errfile,
+ "No entry for terminal type \"%s\";\n", term);
+ (void) fprintf(el->el_errfile, "using dumb terminal settings.\n");
+ Val(T_co) = 80; /* do a dumb terminal */
+ Val(T_pt) = Val(T_km) = Val(T_li) = 0;
+ Val(T_xt) = Val(T_MT);
+ for (t = tstr; t->name != NULL; t++)
+ term_alloc(el, t, NULL);
+ }
+ else {
+ /* Can we tab */
+ Val(T_pt) = tgetflag("pt");
+ Val(T_xt) = tgetflag("xt");
+ /* do we have a meta? */
+ Val(T_km) = tgetflag("km");
+ Val(T_MT) = tgetflag("MT");
+ /* Get the size */
+ Val(T_co) = tgetnum("co");
+ Val(T_li) = tgetnum("li");
+ for (t = tstr; t->name != NULL; t++)
+ term_alloc(el, t, tgetstr(t->name, &area));
+ }
+
+ if (Val(T_co) < 2)
+ Val(T_co) = 80; /* just in case */
+ if (Val(T_li) < 1)
+ Val(T_li) = 24;
+
+ el->el_term.t_size.v = Val(T_co);
+ el->el_term.t_size.h = Val(T_li);
+
+ term_setflags(el);
+
+ (void) term_get_size(el, &lins, &cols);/* get the correct window size */
+ term_change_size(el, lins, cols);
+ (void) sigprocmask(SIG_SETMASK, &oset, NULL);
+ term_bind_arrow(el);
+ return i <= 0 ? -1 : 0;
+} /* end term_set */
+
+
+/* term_get_size():
+ * Return the new window size in lines and cols, and
+ * true if the size was changed.
+ */
+protected int
+term_get_size(el, lins, cols)
+ EditLine *el;
+ int *lins, *cols;
+{
+
+ *cols = Val(T_co);
+ *lins = Val(T_li);
+
+#ifdef TIOCGWINSZ
+ {
+ struct winsize ws;
+ if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) &ws) != -1) {
+ if (ws.ws_col)
+ *cols = ws.ws_col;
+ if (ws.ws_row)
+ *lins = ws.ws_row;
+ }
+ }
+#endif
+#ifdef TIOCGSIZE
+ {
+ struct ttysize ts;
+ if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) &ts) != -1) {
+ if (ts.ts_cols)
+ *cols = ts.ts_cols;
+ if (ts.ts_lines)
+ *lins = ts.ts_lines;
+ }
+ }
+#endif
+ return (Val(T_co) != *cols || Val(T_li) != *lins);
+} /* end term_get_size */
+
+
+/* term_change_size():
+ * Change the size of the terminal
+ */
+protected void
+term_change_size(el, lins, cols)
+ EditLine *el;
+ int lins, cols;
+{
+ /*
+ * Just in case
+ */
+ Val(T_co) = (cols < 2) ? 80 : cols;
+ Val(T_li) = (lins < 1) ? 24 : lins;
+
+ term_rebuffer_display(el); /* re-make display buffers */
+ re_clear_display(el);
+} /* end term_change_size */
+
+
+/* term_init_arrow():
+ * Initialize the arrow key bindings from termcap
+ */
+private void
+term_init_arrow(el)
+ EditLine *el;
+{
+ fkey_t *arrow = el->el_term.t_fkey;
+
+ arrow[A_K_DN].name = "down";
+ arrow[A_K_DN].key = T_kd;
+ arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
+ arrow[A_K_DN].type = XK_CMD;
+
+ arrow[A_K_UP].name = "up";
+ arrow[A_K_UP].key = T_ku;
+ arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
+ arrow[A_K_UP].type = XK_CMD;
+
+ arrow[A_K_LT].name = "left";
+ arrow[A_K_LT].key = T_kl;
+ arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
+ arrow[A_K_LT].type = XK_CMD;
+
+ arrow[A_K_RT].name = "right";
+ arrow[A_K_RT].key = T_kr;
+ arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
+ arrow[A_K_RT].type = XK_CMD;
+
+}
+
+
+/* term_reset_arrow():
+ * Reset arrow key bindings
+ */
+private void
+term_reset_arrow(el)
+ EditLine *el;
+{
+ fkey_t *arrow = el->el_term.t_fkey;
+ static char strA[] = {033, '[', 'A', '\0'};
+ static char strB[] = {033, '[', 'B', '\0'};
+ static char strC[] = {033, '[', 'C', '\0'};
+ static char strD[] = {033, '[', 'D', '\0'};
+ static char stOA[] = {033, 'O', 'A', '\0'};
+ static char stOB[] = {033, 'O', 'B', '\0'};
+ static char stOC[] = {033, 'O', 'C', '\0'};
+ static char stOD[] = {033, 'O', 'D', '\0'};
+
+ key_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
+ key_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
+ key_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
+ key_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
+ key_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
+ key_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
+ key_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
+ key_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
+
+ if (el->el_map.type == MAP_VI) {
+ key_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
+ key_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
+ key_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
+ key_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
+ key_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
+ key_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
+ key_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
+ key_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
+ }
+}
+
+
+/* term_set_arrow():
+ * Set an arrow key binding
+ */
+protected int
+term_set_arrow(el, name, fun, type)
+ EditLine *el;
+ char *name;
+ key_value_t *fun;
+ int type;
+{
+ fkey_t *arrow = el->el_term.t_fkey;
+ int i;
+
+ for (i = 0; i < A_K_NKEYS; i++)
+ if (strcmp(name, arrow[i].name) == 0) {
+ arrow[i].fun = *fun;
+ arrow[i].type = type;
+ return 0;
+ }
+ return -1;
+}
+
+
+/* term_clear_arrow():
+ * Clear an arrow key binding
+ */
+protected int
+term_clear_arrow(el, name)
+ EditLine *el;
+ char *name;
+{
+ fkey_t *arrow = el->el_term.t_fkey;
+ int i;
+
+ for (i = 0; i < A_K_NKEYS; i++)
+ if (strcmp(name, arrow[i].name) == 0) {
+ arrow[i].type = XK_NOD;
+ return 0;
+ }
+ return -1;
+}
+
+
+/* term_print_arrow():
+ * Print the arrow key bindings
+ */
+protected void
+term_print_arrow(el, name)
+ EditLine *el;
+ char *name;
+{
+ int i;
+ fkey_t *arrow = el->el_term.t_fkey;
+
+ for (i = 0; i < A_K_NKEYS; i++)
+ if (*name == '\0' || strcmp(name, arrow[i].name) == 0)
+ if (arrow[i].type != XK_NOD)
+ key_kprint(el, arrow[i].name, &arrow[i].fun, arrow[i].type);
+}
+
+
+/* term_bind_arrow():
+ * Bind the arrow keys
+ */
+protected void
+term_bind_arrow(el)
+ EditLine *el;
+{
+ el_action_t *map, *dmap;
+ int i, j;
+ char *p;
+ fkey_t *arrow = el->el_term.t_fkey;
+
+ /* Check if the components needed are initialized */
+ if (el->el_term.t_buf == NULL || el->el_map.key == NULL)
+ return;
+
+ map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
+ dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
+
+ term_reset_arrow(el);
+
+ for (i = 0; i < 4; i++) {
+ p = el->el_term.t_str[arrow[i].key];
+ if (p && *p) {
+ j = (unsigned char) *p;
+ /*
+ * Assign the arrow keys only if:
+ *
+ * 1. They are multi-character arrow keys and the user
+ * has not re-assigned the leading character, or
+ * has re-assigned the leading character to be
+ * ED_SEQUENCE_LEAD_IN
+ * 2. They are single arrow keys pointing to an unassigned key.
+ */
+ if (arrow[i].type == XK_NOD)
+ key_clear(el, map, p);
+ else {
+ if (p[1] && (dmap[j] == map[j] ||
+ map[j] == ED_SEQUENCE_LEAD_IN)) {
+ key_add(el, p, &arrow[i].fun, arrow[i].type);
+ map[j] = ED_SEQUENCE_LEAD_IN;
+ }
+ else if (map[j] == ED_UNASSIGNED) {
+ key_clear(el, map, p);
+ if (arrow[i].type == XK_CMD)
+ map[j] = arrow[i].fun.cmd;
+ else
+ key_add(el, p, &arrow[i].fun, arrow[i].type);
+ }
+ }
+ }
+ }
+}
+
+
+/* term__putc():
+ * Add a character
+ */
+protected int
+term__putc(c)
+ int c;
+{
+ return fputc(c, term_outfile);
+} /* end term__putc */
+
+
+/* term__flush():
+ * Flush output
+ */
+protected void
+term__flush()
+{
+ (void) fflush(term_outfile);
+} /* end term__flush */
+
+
+/* term_telltc():
+ * Print the current termcap characteristics
+ */
+protected int
+/*ARGSUSED*/
+term_telltc(el, argc, argv)
+ EditLine *el;
+ int argc;
+ char **argv;
+{
+ struct termcapstr *t;
+ char **ts;
+ char upbuf[EL_BUFSIZ];
+
+ (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
+ (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
+ (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
+ Val(T_co), Val(T_li));
+ (void) fprintf(el->el_outfile,
+ "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
+ (void) fprintf(el->el_outfile,
+ "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
+#ifdef notyet
+ (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
+ (T_Margin&MARGIN_AUTO)? "has": "does not have");
+ if (T_Margin & MARGIN_AUTO)
+ (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
+ (T_Margin&MARGIN_MAGIC)?"has":"does not have");
+#endif
+
+ for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++)
+ (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", t->long_name,
+ t->name, *ts && **ts ?
+ key__decode_str(*ts, upbuf, "") : "(empty)");
+ (void) fputc('\n', el->el_outfile);
+ return 0;
+}
+
+
+/* term_settc():
+ * Change the current terminal characteristics
+ */
+protected int
+/*ARGSUSED*/
+term_settc(el, argc, argv)
+ EditLine *el;
+ int argc;
+ char **argv;
+{
+ struct termcapstr *ts;
+ struct termcapval *tv;
+ char *what, *how;
+
+ if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
+ return -1;
+
+ what = argv[1];
+ how = argv[2];
+
+ /*
+ * Do the strings first
+ */
+ for (ts = tstr; ts->name != NULL; ts++)
+ if (strcmp(ts->name, what) == 0)
+ break;
+
+ if (ts->name != NULL) {
+ term_alloc(el, ts, how);
+ term_setflags(el);
+ return 0;
+ }
+
+ /*
+ * Do the numeric ones second
+ */
+ for (tv = tval; tv->name != NULL; tv++)
+ if (strcmp(tv->name, what) == 0)
+ break;
+
+ if (tv->name != NULL) {
+ if (tv == &tval[T_pt] || tv == &tval[T_km]
+#ifdef notyet
+ || tv == &tval[T_am] || tv == &tval[T_xn]
+#endif
+ ) {
+ if (strcmp(how, "yes") == 0)
+ el->el_term.t_val[tv - tval] = 1;
+ else if (strcmp(how, "no") == 0)
+ el->el_term.t_val[tv - tval] = 0;
+ else {
+ (void) fprintf(el->el_errfile, "settc: Bad value `%s'.\n", how);
+ return -1;
+ }
+ term_setflags(el);
+ term_change_size(el, Val(T_li), Val(T_co));
+ return 0;
+ }
+ else {
+ el->el_term.t_val[tv - tval] = atoi(how);
+ el->el_term.t_size.v = Val(T_co);
+ el->el_term.t_size.h = Val(T_li);
+ if (tv == &tval[T_co] || tv == &tval[T_li])
+ term_change_size(el, Val(T_li), Val(T_co));
+ return 0;
+ }
+ }
+ return -1;
+}
+
+
+/* term_echotc():
+ * Print the termcap string out with variable substitution
+ */
+protected int
+/*ARGSUSED*/
+term_echotc(el, argc, argv)
+ EditLine *el;
+ int argc;
+ char **argv;
+{
+ char *cap, *scap;
+ int arg_need, arg_cols, arg_rows;
+ int verbose = 0, silent = 0;
+ char *area;
+ static char *fmts = "%s\n", *fmtd = "%d\n";
+ struct termcapstr *t;
+ char buf[TC_BUFSIZE];
+
+ area = buf;
+
+ if (argv == NULL || argv[1] == NULL)
+ return -1;
+ argv++;
+
+ if (argv[0][0] == '-') {
+ switch (argv[0][1]) {
+ case 'v':
+ verbose = 1;
+ break;
+ case 's':
+ silent = 1;
+ break;
+ default:
+ /* stderror(ERR_NAME | ERR_TCUSAGE); */
+ break;
+ }
+ argv++;
+ }
+ if (!*argv || *argv[0] == '\0')
+ return 0;
+ if (strcmp(*argv, "tabs") == 0) {
+ (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
+ return 0;
+ }
+ else if (strcmp(*argv, "meta") == 0) {
+ (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
+ return 0;
+ }
+#ifdef notyet
+ else if (strcmp(*argv, "xn") == 0) {
+ (void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_MAGIC ?
+ "yes" : "no");
+ return 0;
+ }
+ else if (strcmp(*argv, "am") == 0) {
+ (void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_AUTO ?
+ "yes" : "no");
+ return 0;
+ }
+#endif
+ else if (strcmp(*argv, "baud") == 0) {
+ (void) fprintf(el->el_outfile, "%lu\n", (u_long)el->el_tty.t_speed);
+ return 0;
+ }
+ else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) {
+ (void) fprintf(el->el_outfile, fmtd, Val(T_li));
+ return 0;
+ }
+ else if (strcmp(*argv, "cols") == 0) {
+ (void) fprintf(el->el_outfile, fmtd, Val(T_co));
+ return 0;
+ }
+
+ /*
+ * Try to use our local definition first
+ */
+ scap = NULL;
+ for (t = tstr; t->name != NULL; t++)
+ if (strcmp(t->name, *argv) == 0) {
+ scap = el->el_term.t_str[t - tstr];
+ break;
+ }
+ if (t->name == NULL)
+ scap = tgetstr(*argv, &area);
+ if (!scap || scap[0] == '\0') {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Termcap parameter `%s' not found.\n", *argv);
+ return -1;
+ }
+
+ /*
+ * Count home many values we need for this capability.
+ */
+ for (cap = scap, arg_need = 0; *cap; cap++)
+ if (*cap == '%')
+ switch (*++cap) {
+ case 'd':
+ case '2':
+ case '3':
+ case '.':
+ case '+':
+ arg_need++;
+ break;
+ case '%':
+ case '>':
+ case 'i':
+ case 'r':
+ case 'n':
+ case 'B':
+ case 'D':
+ break;
+ default:
+ /*
+ * hpux has lot's of them...
+ */
+ if (verbose)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: unknown termcap %% `%c'.\n", *cap);
+ /* This is bad, but I won't complain */
+ break;
+ }
+
+ switch (arg_need) {
+ case 0:
+ argv++;
+ if (*argv && *argv[0]) {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Extra argument `%s'.\n", *argv);
+ return -1;
+ }
+ (void) tputs(scap, 1, term__putc);
+ break;
+ case 1:
+ argv++;
+ if (!*argv || *argv[0] == '\0') {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Missing argument.\n");
+ return -1;
+ }
+ arg_cols = 0;
+ arg_rows = atoi(*argv);
+ argv++;
+ if (*argv && *argv[0]) {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Extra argument `%s'.\n", *argv);
+ return -1;
+ }
+ (void) tputs(tgoto(scap, arg_cols, arg_rows), 1, term__putc);
+ break;
+ default:
+ /* This is wrong, but I will ignore it... */
+ if (verbose)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Too many required arguments (%d).\n",
+ arg_need);
+ /*FALLTHROUGH*/
+ case 2:
+ argv++;
+ if (!*argv || *argv[0] == '\0') {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Missing argument.\n");
+ return -1;
+ }
+ arg_cols = atoi(*argv);
+ argv++;
+ if (!*argv || *argv[0] == '\0') {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Missing argument.\n");
+ return -1;
+ }
+ arg_rows = atoi(*argv);
+ argv++;
+ if (*argv && *argv[0]) {
+ if (!silent)
+ (void) fprintf(el->el_errfile,
+ "echotc: Warning: Extra argument `%s'.\n", *argv);
+ return -1;
+ }
+ (void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows, term__putc);
+ break;
+ }
+ return 0;
+}
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