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gno/lib/libedit/term.c

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/*-
* 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"
#include "term.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(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(char*));
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);
return;
}
/*
* New string is longer; see if we have enough space to append
*/
if (el->el_term.t_loc + 3 < TC_BUFSIZE) {
(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;
}
(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)
#ifdef __FreeBSD__
(void) fprintf(el->el_errfile, "Cannot open /usr/share/misc/termcap.\n");
#else
(void) fprintf(el->el_errfile, "Cannot open /etc/termcap.\n");
#endif
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 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,
#if defined(linux) || defined(__GNO__)
"%d\n",
#else
"%ld\n",
#endif
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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