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screen/help.c
Daniel Baumann e88291c4cd
Adding upstream version 4.9.1. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 15:19:57 +02:00

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/* Copyright (c) 2010
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
* Copyright (c) 2008, 2009
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Micah Cowan (micah@cowan.name)
* Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
* Copyright (c) 1993-2002, 2003, 2005, 2006, 2007
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1987 Oliver Laumann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, see
* https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
****************************************************************
*/
#include <sys/types.h>
#include "config.h"
#include "screen.h"
#include "extern.h"
#include "list_generic.h"
char version[60]; /* initialised by main() */
extern struct layer *flayer;
extern struct display *display, *displays;
extern struct win *windows;
extern int maxwin;
extern char *noargs[];
extern struct mchar mchar_blank, mchar_so;
extern int renditions[];
extern unsigned char *blank;
extern struct win **wtab;
#ifdef MAPKEYS
extern struct term term[];
#endif
extern struct LayFuncs ListLf;
static void PadStr __P((char *, int, int, int));
extern char *wliststr;
extern char *wlisttit;
void exit_with_usage(char *myname, char *message, char *arg)
{
printf("Use: %s [-opts] [cmd [args]]\n", myname);
printf(" or: %s -r [host.tty]\n\nOptions:\n", myname);
#ifdef BUILTIN_TELNET
printf("-4 Resolve hostnames only to IPv4 addresses.\n");
printf("-6 Resolve hostnames only to IPv6 addresses.\n");
#endif
printf("-a Force all capabilities into each window's termcap.\n");
printf("-A -[r|R] Adapt all windows to the new display width & height.\n");
printf("-c file Read configuration file instead of '.screenrc'.\n");
#ifdef REMOTE_DETACH
printf("-d (-r) Detach the elsewhere running screen (and reattach here).\n");
printf("-dmS name Start as daemon: Screen session in detached mode.\n");
printf("-D (-r) Detach and logout remote (and reattach here).\n");
printf("-D -RR Do whatever is needed to get a screen session.\n");
#endif
printf("-e xy Change command characters.\n");
printf("-f Flow control on, -fn = off, -fa = auto.\n");
printf("-h lines Set the size of the scrollback history buffer.\n");
printf("-i Interrupt output sooner when flow control is on.\n");
#if defined(LOGOUTOK) && defined(UTMPOK)
printf("-l Login mode on (update %s), -ln = off.\n", UTMPFILE);
#endif
printf("-ls [match] or\n");
printf("-list Do nothing, just list our SockDir [on possible matches].\n");
printf("-L Turn on output logging.\n");
printf("-Logfile file Set logfile name.\n");
printf("-m ignore $STY variable, do create a new screen session.\n");
printf("-O Choose optimal output rather than exact vt100 emulation.\n");
printf("-p window Preselect the named window if it exists.\n");
printf("-q Quiet startup. Exits with non-zero return code if unsuccessful.\n");
printf("-Q Commands will send the response to the stdout of the querying process.\n");
printf("-r [session] Reattach to a detached screen process.\n");
printf("-R Reattach if possible, otherwise start a new session.\n");
printf("-s shell Shell to execute rather than $SHELL.\n");
printf("-S sockname Name this session <pid>.sockname instead of <pid>.<tty>.<host>.\n");
printf("-t title Set title. (window's name).\n");
printf("-T term Use term as $TERM for windows, rather than \"screen\".\n");
#ifdef UTF8
printf("-U Tell screen to use UTF-8 encoding.\n");
#endif
printf("-v Print \"Screen version %s\".\n", version);
printf("-wipe [match] Do nothing, just clean up SockDir [on possible matches].\n");
#ifdef MULTI
printf("-x Attach to a not detached screen. (Multi display mode).\n");
#endif /* MULTI */
printf("-X Execute <cmd> as a screen command in the specified session.\n");
if (message && *message) {
printf("\nError: ");
printf(message, arg);
printf("\n");
exit(1);
}
exit(0);
}
/* Here come the help page routines */
extern struct comm comms[];
extern struct action ktab[];
static void HelpProcess __P((char **, int *));
static void HelpAbort __P((void));
static void HelpRedisplayLine __P((int, int, int, int));
static void add_key_to_buf __P((char *, int));
static void AddAction __P((struct action *, int, int));
static int helppage __P((void));
struct helpdata {
char *class;
struct action *ktabp;
int maxrow, grow, numcols, numrows, num_names;
int numskip, numpages;
int command_search, command_bindings;
int refgrow, refcommand_search;
int inter, mcom, mkey;
int nact[RC_LAST + 1];
};
#define MAXKLEN 256
static struct LayFuncs HelpLf =
{
HelpProcess,
HelpAbort,
HelpRedisplayLine,
DefClearLine,
DefRewrite,
DefResize,
DefRestore,
0
};
void display_help(char *class, struct action *ktabp) {
int i, n, key, mcom, mkey, l, used[RC_LAST + 1];
struct helpdata *helpdata;
if (flayer->l_height < 6) {
LMsg(0, "Window height too small for help page");
return;
}
if (InitOverlayPage(sizeof(*helpdata), &HelpLf, 0))
return;
helpdata = (struct helpdata *)flayer->l_data;
helpdata->class = class;
helpdata->ktabp = ktabp;
helpdata->num_names = helpdata->command_bindings = 0;
helpdata->command_search = 0;
for (n = 0; n <= RC_LAST; n++)
used[n] = 0;
mcom = 0;
mkey = 0;
for (key = 0; key < 256 + KMAP_KEYS; key++) {
n = ktabp[key].nr;
if (n == RC_ILLEGAL)
continue;
if (ktabp[key].args == noargs) {
used[n] += (key <= ' ' || key == 0x7f) ? 3 : (key > 0x7f) ? 5 : 2;
}
else
helpdata->command_bindings++;
}
for (n = i = 0; n <= RC_LAST; n++)
if (used[n]) {
l = strlen(comms[n].name);
if (l > mcom)
mcom = l;
if (used[n] > mkey)
mkey = used[n];
helpdata->nact[i++] = n;
}
debug1("help: %d commands bound to keys with no arguments\n", i);
debug2("mcom: %d mkey: %d\n", mcom, mkey);
helpdata->num_names = i;
if (mkey > MAXKLEN)
mkey = MAXKLEN;
helpdata->numcols = flayer->l_width / (mcom + mkey + 1);
if (helpdata->numcols == 0) {
HelpAbort();
LMsg(0, "Width too small");
return;
}
helpdata->inter = (flayer->l_width - (mcom + mkey) * helpdata->numcols) / (helpdata->numcols + 1);
if (helpdata->inter <= 0)
helpdata->inter = 1;
debug1("inter: %d\n", helpdata->inter);
helpdata->mcom = mcom;
helpdata->mkey = mkey;
helpdata->numrows = (helpdata->num_names + helpdata->numcols - 1) / helpdata->numcols;
debug1("Numrows: %d\n", helpdata->numrows);
helpdata->numskip = flayer->l_height-5 - (2 + helpdata->numrows);
while (helpdata->numskip < 0)
helpdata->numskip += flayer->l_height-5;
helpdata->numskip %= flayer->l_height-5;
debug1("Numskip: %d\n", helpdata->numskip);
if (helpdata->numskip > flayer->l_height/3 || helpdata->numskip > helpdata->command_bindings)
helpdata->numskip = 1;
helpdata->maxrow = 2 + helpdata->numrows + helpdata->numskip + helpdata->command_bindings;
helpdata->grow = 0;
helpdata->numpages = (helpdata->maxrow + flayer->l_height-6) / (flayer->l_height-5);
flayer->l_x = 0;
flayer->l_y = flayer->l_height - 1;
helppage();
}
static void HelpProcess(char **ppbuf, int *plen) {
int done = 0;
while (!done && *plen > 0) {
switch (**ppbuf) {
case ' ':
if (helppage() == 0)
break;
/* FALLTHROUGH */
case '\r':
case '\n':
done = 1;
break;
default:
break;
}
++*ppbuf;
--*plen;
}
if (done)
HelpAbort();
}
static void HelpAbort() {
LAY_CALL_UP(LRefreshAll(flayer, 0));
ExitOverlayPage();
}
static int helppage() {
struct helpdata *helpdata;
int col, crow, n, key, x;
char buf[MAXKLEN], Esc_buf[6], cbuf[MAXKLEN + 50];
struct action *ktabp;
helpdata = (struct helpdata *)flayer->l_data;
ktabp = helpdata->ktabp;
if (helpdata->grow >= helpdata->maxrow)
return -1;
helpdata->refgrow = helpdata->grow;
helpdata->refcommand_search = helpdata->command_search;
/* Clear the help screen */
LClearAll(flayer, 0);
sprintf(cbuf,"Screen key bindings, page %d of %d.", helpdata->grow / (flayer->l_height-5) + 1, helpdata->numpages);
centerline(cbuf, 0);
crow = 2;
*Esc_buf = '\0';
*buf = '\0';
/* XXX fix escape character */
if (flayer->l_cvlist && flayer->l_cvlist->c_display) {
add_key_to_buf(buf, flayer->l_cvlist->c_display->d_user->u_MetaEsc);
add_key_to_buf(Esc_buf, flayer->l_cvlist->c_display->d_user->u_Esc);
}
else {
strcpy(Esc_buf, "??");
strcpy(buf, "??");
}
for (; crow < flayer->l_height - 3; crow++) {
if (helpdata->grow < 1) {
if (ktabp == ktab)
sprintf(cbuf,"Command key: %s Literal %s: %s", Esc_buf, Esc_buf, buf);
else
sprintf(cbuf,"Command class: '%.80s'", helpdata->class);
centerline(cbuf, crow);
helpdata->grow++;
}
else if (helpdata->grow >= 2 && helpdata->grow-2 < helpdata->numrows) {
x = 0;
for (col = 0; col < helpdata->numcols && (n = helpdata->numrows * col + (helpdata->grow-2)) < helpdata->num_names; col++) {
x += helpdata->inter - !col;
n = helpdata->nact[n];
buf[0] = '\0';
for (key = 0; key < 256 + KMAP_KEYS; key++)
if (ktabp[key].nr == n && ktabp[key].args == noargs && strlen(buf) < sizeof(buf) - 7) {
strcat(buf, " ");
add_key_to_buf(buf, key);
}
PadStr(comms[n].name, helpdata->mcom, x, crow);
x += helpdata->mcom;
PadStr(buf, helpdata->mkey, x, crow);
x += helpdata->mkey;
}
helpdata->grow++;
}
else if (helpdata->grow-2-helpdata->numrows >= helpdata->numskip
&& helpdata->grow-2-helpdata->numrows-helpdata->numskip < helpdata->command_bindings) {
while ((n = ktabp[helpdata->command_search].nr) == RC_ILLEGAL || ktabp[helpdata->command_search].args == noargs) {
if (++helpdata->command_search >= 256 + KMAP_KEYS)
return -1;
}
buf[0] = '\0';
add_key_to_buf(buf, helpdata->command_search);
PadStr(buf, 5, 0, crow);
AddAction(&ktabp[helpdata->command_search++], 5, crow);
helpdata->grow++;
}
else
helpdata->grow++;
}
sprintf(cbuf,"[Press Space %s Return to end.]", helpdata->grow < helpdata->maxrow ? "for next page;" : "or");
centerline(cbuf, flayer->l_height - 2);
LaySetCursor();
return 0;
}
static void AddAction(struct action *act, int x, int y) {
char buf[256];
int del, l, fr;
char *bp, *cp, **pp;
int *lp, ll;
struct mchar mchar_dol;
mchar_dol = mchar_blank;
mchar_dol.image = '$';
fr = flayer->l_width - 1 - x;
if (fr <= 0)
return;
l = strlen(comms[act->nr].name);
if (l + 1 > fr)
l = fr - 1;
PadStr(comms[act->nr].name, l, x, y);
x += l;
fr -= l + 1;
LPutChar(flayer, fr ? &mchar_blank : &mchar_dol, x++, y);
pp = act->args;
lp = act->argl;
while (pp && (cp = *pp) != NULL) {
del = 0;
bp = buf;
ll = *lp++;
if (!ll || (index(cp, ' ') != NULL)) {
if (index(cp, '\'') != NULL)
*bp++ = del = '"';
else
*bp++ = del = '\'';
}
while (ll-- && bp < buf + 250)
bp += AddXChar(bp, *(unsigned char *)cp++);
if (del)
*bp++ = del;
*bp = 0;
if ((fr -= (bp - buf) + 1) < 0) {
fr += bp - buf;
if (fr > 0)
PadStr(buf, fr, x, y);
if (fr == 0)
LPutChar(flayer, &mchar_dol, x, y);
return;
}
PadStr(buf, strlen(buf), x, y);
x += strlen(buf);
pp++;
if (*pp)
LPutChar(flayer, fr ? &mchar_blank : &mchar_dol, x++, y);
}
}
static void add_key_to_buf(char *buf, int key) {
buf += strlen(buf);
if (key < 0)
strcpy(buf, "unset");
else if (key == ' ')
strcpy(buf, "sp");
#ifdef MAPKEYS
else if (key >= 256) {
key = key - 256 + T_CAPS;
buf[0] = ':';
buf[1] = term[key].tcname[0];
buf[2] = term[key].tcname[1];
buf[3] = ':';
buf[4] = 0;
}
#endif
else
buf[AddXChar(buf, key)] = 0;
}
static void HelpRedisplayLine(int y, int xs, int xe, int isblank) {
if (y < 0) {
struct helpdata *helpdata;
helpdata = (struct helpdata *)flayer->l_data;
helpdata->grow = helpdata->refgrow;
helpdata->command_search = helpdata->refcommand_search;
helppage();
return;
}
if (y != 0 && y != flayer->l_height - 1)
return;
if (!isblank)
LClearArea(flayer, xs, y, xe, y, 0, 0);
}
/* here is all the copyright stuff */
static void CopyrightProcess __P((char **, int *));
static void CopyrightRedisplayLine __P((int, int, int, int));
static void CopyrightAbort __P((void));
static void copypage __P((void));
struct copydata {
char *cps, *savedcps; /* position in the message */
char *refcps, *refsavedcps; /* backup for redisplaying */
};
static struct LayFuncs CopyrightLf = {
CopyrightProcess,
CopyrightAbort,
CopyrightRedisplayLine,
DefClearLine,
DefRewrite,
DefResize,
DefRestore,
0
};
static const char cpmsg[] = "\
\n\
GNU Screen version %v\n\
\n\
Copyright (c) 2018-2023 Alexander Naumov, Amadeusz Slawinski\n\
Copyright (c) 2015-2017 Juergen Weigert, Alexander Naumov, Amadeusz Slawinski\n\
Copyright (c) 2010-2014 Juergen Weigert, Sadrul Habib Chowdhury\n\
Copyright (c) 2008-2009 Juergen Weigert, Michael Schroeder, Micah Cowan, Sadrul Habib Chowdhury\n\
Copyright (c) 1993-2007 Juergen Weigert, Michael Schroeder\n\
Copyright (c) 1987 Oliver Laumann\n\
\n\
This program is free software; you can redistribute it and/or \
modify it under the terms of the GNU General Public License as published \
by the Free Software Foundation; either version 3, or (at your option) \
any later version.\n\
\n\
This program is distributed in the hope that it will be useful, \
but WITHOUT ANY WARRANTY; without even the implied warranty of \
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the \
GNU General Public License for more details.\n\
\n\
You should have received a copy of the GNU General Public License \
along with this program (see the file COPYING); if not, see \
https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc., \
51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA.\n\
\n\
Send bugreports, fixes, enhancements, t-shirts, money, beer & pizza to \
screen-devel@gnu.org\n\n\n"
"Capabilities:\n"
#ifdef COPY_PASTE
"+copy "
#else
"-copy "
#endif
#ifdef REMOTE_DETACH
"+remote-detach "
#else
"-remote-detach "
#endif
#ifdef POW_DETACH
"+power-detach "
#else
"-power-detach "
#endif
#ifdef MULTI
"+multi-attach "
#else
"-multi-attach "
#endif
#ifdef MULTIUSER
"+multi-user "
#else
"-multi-user "
#endif
#ifdef FONT
"+font "
#else
"-font "
#endif
#ifdef COLORS256
"+color-256 "
#elif defined(COLORS16)
"+color-16 "
#elif defined(COLOR)
"+color "
#else
"-color "
#endif
#ifdef UTF8
"+utf8 "
#else
"-utf8 "
#endif
#ifdef RXVT_OSC
"+rxvt "
#else
"-rxvt "
#endif
#ifdef BUILTIN_TELNET
"+builtin-telnet "
#else
"-builtin-telnet "
#endif
;
static void CopyrightProcess(char **ppbuf, int *plen) {
int done = 0;
struct copydata *copydata;
copydata = (struct copydata *)flayer->l_data;
while (!done && *plen > 0) {
switch (**ppbuf) {
case ' ':
if (*copydata->cps) {
copypage();
break;
}
/* FALLTHROUGH */
case '\r':
case '\n':
CopyrightAbort();
done = 1;
break;
default:
break;
}
++*ppbuf;
--*plen;
}
}
static void CopyrightAbort() {
LAY_CALL_UP(LRefreshAll(flayer, 0));
ExitOverlayPage();
}
void display_copyright() {
struct copydata *copydata;
if (flayer->l_width < 10 || flayer->l_height < 5) {
LMsg(0, "Window size too small for copyright page");
return;
}
if (InitOverlayPage(sizeof(*copydata), &CopyrightLf, 0))
return;
copydata = (struct copydata *)flayer->l_data;
copydata->cps = (char *)cpmsg;
copydata->savedcps = 0;
flayer->l_x = 0;
flayer->l_y = flayer->l_height - 1;
copypage();
}
static void copypage() {
register char *cps;
char *ws;
int x, y, l;
char cbuf[80];
struct copydata *copydata;
ASSERT(flayer);
copydata = (struct copydata *)flayer->l_data;
LClearAll(flayer, 0);
x = y = 0;
cps = copydata->cps;
copydata->refcps = cps;
copydata->refsavedcps = copydata->savedcps;
while (*cps && y < flayer->l_height - 3) {
ws = cps;
while (*cps == ' ')
cps++;
if (strncmp(cps, "%v", 2) == 0) {
copydata->savedcps = cps + 2;
cps = version;
continue;
}
while (*cps && *cps != ' ' && *cps != '\n')
cps++;
l = cps - ws;
cps = ws;
if (l > flayer->l_width - 1)
l = flayer->l_width - 1;
if (x && x + l >= flayer->l_width - 2) {
x = 0;
y++;
continue;
}
if (x) {
LPutChar(flayer, &mchar_blank, x, y);
x++;
}
if (l)
LPutStr(flayer, ws, l, &mchar_blank, x, y);
x += l;
cps += l;
if (*cps == 0 && copydata->savedcps) {
cps = copydata->savedcps;
copydata->savedcps = 0;
}
if (*cps == '\n') {
x = 0;
y++;
}
if (*cps == ' ' || *cps == '\n')
cps++;
}
while (*cps == '\n')
cps++;
sprintf(cbuf,"[Press Space %s Return to end.]", *cps ? "for next page;" : "or");
centerline(cbuf, flayer->l_height - 2);
copydata->cps = cps;
LaySetCursor();
}
static void CopyrightRedisplayLine(int y, int xs, int xe, int isblank) {
ASSERT(flayer);
if (y < 0) {
struct copydata *copydata;
copydata = (struct copydata *)flayer->l_data;
copydata->cps = copydata->refcps;
copydata->savedcps = copydata->refsavedcps;
copypage();
return;
}
if (y != 0 && y != flayer->l_height - 1)
return;
if (isblank)
return;
LClearArea(flayer, xs, y, xe, y, 0, 0);
}
/* The bindkey help page */
#ifdef MAPKEYS
extern struct kmap_ext *kmap_exts;
extern int kmap_extn;
extern struct action dmtab[];
extern struct action mmtab[];
static void BindkeyProcess __P((char **, int *));
static void BindkeyAbort __P((void));
static void BindkeyRedisplayLine __P((int, int, int, int));
static void bindkeypage __P((void));
struct bindkeydata {
char *title;
struct action *tab;
int pos;
int last;
int page;
int pages;
};
static struct LayFuncs BindkeyLf = {
BindkeyProcess,
BindkeyAbort,
BindkeyRedisplayLine,
DefClearLine,
DefRewrite,
DefResize,
DefRestore,
0
};
void display_bindkey(char *title, struct action *tab) {
struct bindkeydata *bindkeydata;
int i, n;
if (flayer->l_height < 6) {
LMsg(0, "Window height too small for bindkey page");
return;
}
if (InitOverlayPage(sizeof(*bindkeydata), &BindkeyLf, 0))
return;
bindkeydata = (struct bindkeydata *)flayer->l_data;
bindkeydata->title = title;
bindkeydata->tab = tab;
n = 0;
for (i = 0; i < KMAP_KEYS+KMAP_AKEYS+kmap_extn; i++) {
if (tab[i].nr != RC_ILLEGAL)
n++;
}
bindkeydata->pos = 0;
bindkeydata->page = 1;
bindkeydata->pages = (n + flayer->l_height - 6) / (flayer->l_height - 5);
if (bindkeydata->pages == 0)
bindkeydata->pages = 1;
flayer->l_x = 0;
flayer->l_y = flayer->l_height - 1;
bindkeypage();
}
static void BindkeyAbort() {
LAY_CALL_UP(LRefreshAll(flayer, 0));
ExitOverlayPage();
}
static void bindkeypage() {
struct bindkeydata *bindkeydata;
struct kmap_ext *kme;
char tbuf[256];
int del, i, y, sl;
struct action *act;
char *xch, *s, *p;
bindkeydata = (struct bindkeydata *)flayer->l_data;
LClearAll(flayer, 0);
sprintf(tbuf, "%s key bindings, page %d of %d.", bindkeydata->title, bindkeydata->page, bindkeydata->pages);
centerline(tbuf, 0);
y = 2;
for (i = bindkeydata->pos; i < KMAP_KEYS+KMAP_AKEYS+kmap_extn && y < flayer->l_height - 3; i++) {
p = tbuf;
xch = " ";
if (i < KMAP_KEYS) {
act = &bindkeydata->tab[i];
if (act->nr == RC_ILLEGAL)
continue;
del = *p++ = ':';
s = term[i + T_CAPS].tcname;
sl = s ? strlen(s) : 0;
}
else if (i < KMAP_KEYS+KMAP_AKEYS) {
act = &bindkeydata->tab[i];
if (act->nr == RC_ILLEGAL)
continue;
del = *p++ = ':';
s = term[i + (T_CAPS - T_OCAPS + T_CURSOR)].tcname;
sl = s ? strlen(s) : 0;
xch = "[A]";
}
else {
kme = kmap_exts + (i - (KMAP_KEYS+KMAP_AKEYS));
del = 0;
s = kme->str;
sl = kme->fl & ~KMAP_NOTIMEOUT;
if ((kme->fl & KMAP_NOTIMEOUT) != 0)
xch = "[T]";
act = bindkeydata->tab == dmtab ? &kme->dm : bindkeydata->tab == mmtab ? &kme->mm : &kme->um;
if (act->nr == RC_ILLEGAL)
continue;
}
while (sl-- > 0)
p += AddXChar(p, *(unsigned char *)s++);
if (del)
*p++ = del;
*p++ = ' ';
while (p < tbuf + 15)
*p++ = ' ';
sprintf(p, "%s -> ", xch);
p += 7;
if (p - tbuf > flayer->l_width - 1) {
tbuf[flayer->l_width - 2] = '$';
tbuf[flayer->l_width - 1] = 0;
}
PadStr(tbuf, strlen(tbuf), 0, y);
AddAction(act, strlen(tbuf), y);
y++;
}
y++;
bindkeydata->last = i;
sprintf(tbuf,"[Press Space %s Return to end.]", bindkeydata->page < bindkeydata->pages ? "for next page;" : "or");
centerline(tbuf, flayer->l_height - 2);
LaySetCursor();
}
static void BindkeyProcess(char **ppbuf, int *plen) {
int done = 0;
struct bindkeydata *bindkeydata;
bindkeydata = (struct bindkeydata *)flayer->l_data;
while (!done && *plen > 0) {
switch (**ppbuf) {
case ' ':
if (bindkeydata->page < bindkeydata->pages) {
bindkeydata->pos = bindkeydata->last;
bindkeydata->page++;
bindkeypage();
break;
}
/* FALLTHROUGH */
case '\r':
case '\n':
done = 1;
break;
default:
break;
}
++*ppbuf;
--*plen;
}
if (done)
BindkeyAbort();
}
static void BindkeyRedisplayLine(int y, int xs, int xe, int isblank) {
if (y < 0) {
bindkeypage();
return;
}
if (y != 0 && y != flayer->l_height - 1)
return;
if (!isblank)
LClearArea(flayer, xs, y, xe, y, 0, 0);
}
#endif /* MAPKEYS */
/* The zmodem active page */
#ifdef ZMODEM
static void ZmodemRedisplayLine __P((int, int, int, int));
static int ZmodemResize __P((int, int));
static struct LayFuncs ZmodemLf = {
DefProcess,
0,
ZmodemRedisplayLine,
DefClearLine,
DefRewrite,
ZmodemResize,
DefRestore,
0
};
/*ARGSUSED*/
static int ZmodemResize(int wi, int he) {
flayer->l_width = wi;
flayer->l_height = he;
flayer->l_x = flayer->l_width > 32 ? 32 : 0;
return 0;
}
static void ZmodemRedisplayLine(int y, int xs, int xe, int isblank) {
DefRedisplayLine(y, xs, xe, isblank);
if (y == 0 && xs == 0)
LPutStr(flayer, "Zmodem active on another display", flayer->l_width > 32 ? 32 : flayer->l_width, &mchar_blank, 0, 0);
}
void ZmodemPage() {
if (InitOverlayPage(1, &ZmodemLf, 1))
return;
LRefreshAll(flayer, 0);
flayer->l_x = flayer->l_width > 32 ? 32 : 0;
flayer->l_y = 0;
}
#endif
static void PadStr(char *str, int n, int x, int y) {
int l;
l = strlen(str);
if (l > n)
l = n;
LPutStr(flayer, str, l, &mchar_blank, x, y);
if (l < n)
LPutStr(flayer, (char *)blank, n - l, &mchar_blank, x + l, y);
}
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