static void
run_in_child(void *data)
{
int r;
cut_fn *fns = data, bringup = fns[0], test = fns[1], takedown = fns[2];
r = dup2(fileno(stdout), fileno(stderr));
if (r < 0) die(3, "dup2");
bringup();
cur_takedown = takedown;
test();
takedown();
fflush(stdout);
fflush(stderr);
}
void typeline(bc *bc, char *preload,int echocr)
{
int i=0,j;
int code;
int backcount=0;
char linesave[LINESIZE],ch;
int linesin;
char ref;
int xdelta;
char *p1,*p2;
char token[128];
char *fake;
int scrollback;
int startx, starty;
char spaces[256], *zerospaces;
char *tail;
int oldlen;
memset(spaces, ' ', sizeof(spaces));
zerospaces = spaces + sizeof(spaces)-1;
*zerospaces = 0;
top:
tail="";
startx = bc->txpos;
starty = bc->typos;
xdelta=0;
linesin=bc->hcount>HISTSIZE ? HISTSIZE : bc->hcount;
strcpy(bc->debline, preload);
i=strlen(bc->debline);
tprintf(bc, preload);
ref=0;
fake=0;
scrollback=0;
while(!(bc->flags & (BF_CCHIT | BF_QUIT)))
{
if(!fake)
{
SDL_Delay(10);
scaninput(bc);
code=takedown(bc);
//if(code=='q' + MYALTED) exit(0); // alt-q
} else
{
code=*fake++;
if(!code) {fake=0;continue;}
}
if(code==-1) continue;
if(code==MYPAGEUP || code==(MYPAGEUP|MYSHIFTED))
{
if(code==MYPAGEUP) ++scrollback;
else scrollback+=bc->tysize;
scrollback=showhistory(bc, scrollback);
continue;
} else if(code==MYPAGEDOWN || code==(MYPAGEDOWN|MYSHIFTED))
{
if(code==MYPAGEDOWN) --scrollback;
else scrollback-=bc->tysize;
if(scrollback<0) scrollback=0;
scrollback=showhistory(bc, scrollback);
if(scrollback)
continue;
else
++ref;
}
if(code==9 || code==4)
{
j=0;
while(i+xdelta-j>0)
{
ch=bc->debline[i+xdelta-j-1];
if(!isalpha(ch) && !isdigit(ch) && ch!='_' && ch!='.') break;
++j;
}
p1=token;
while(j)
*p1++=bc->debline[i+xdelta-j--];
*p1=0;
if(*token)
{
if(code==9)
fake=complete(token);
else
{
cr(bc);
listall(token);
ref=1;
}
}
} else if(code==0x7f)
{
if(!xdelta) continue;
p1=bc->debline+i+xdelta;
p2=p1+1;
while((*p1++=*p2++));
--i;
++xdelta;
++ref;
} else if(code==MYLEFT)
{
if(i+xdelta>0) {--xdelta;++ref;}
} else if(code==MYRIGHT)
{
if(xdelta<0) {++xdelta;++ref;}
} else if(code==MYUP)
{
if(backcount<linesin)
{
if(!backcount)
memcpy(linesave,bc->debline,LINESIZE);
++backcount;
oldlen = strlen(bc->debline);
memcpy(bc->debline,
bc->debhist+LINESIZE*((bc->hcount-backcount) &
(HISTSIZE-1)), LINESIZE);
oldlen -= strlen(bc->debline);
if(oldlen>0) tail=zerospaces-oldlen;
xdelta=0;
}
++ref;
} else if(code==MYDOWN)
{
if(backcount)
{
--backcount;
oldlen = strlen(bc->debline);
if(!backcount) memcpy(bc->debline,linesave,LINESIZE);
else
memcpy(bc->debline,bc->debhist+LINESIZE*((bc->hcount-backcount) & (HISTSIZE-1)),LINESIZE);
oldlen -= strlen(bc->debline);
if(oldlen>0) tail=zerospaces-oldlen;
xdelta=0;
}
++ref;
} else if(code>=0 && code<128)
{
if(code==8)
{
if(i+xdelta)
{
--i;
p1=bc->debline+i+xdelta;
p2=p1+1;
while((*p1++=*p2++));
++ref;
} else continue;
} else if(code==CR)
{
if(echocr) cr(bc);
break;
}
else if(code>=0x20 && i<bc->txsize-1 && i<sizeof(bc->debline)-1)
{
p2=bc->debline+i;
p1=p2+1;
j=1-xdelta;
while(j--) *p1--=*p2--;
*p1=code;
++ref;
} else continue;
}
if(ref)
{
if(scrollback)
scrollback=showhistory(bc, 0);
i=strlen(bc->debline);
tprintf(bc, "\033%dx\033%dy%s %s\033%dx\033%dy",
startx, starty, bc->debline, tail, i+xdelta+startx, starty);
tail="";
ref=0;
}
}
if(bc->flags & BF_CCHIT)
{
flushinput(bc);
if(!(bc->flags & BF_RUNNING))
{
bc->flags &= ~BF_CCHIT;
preload="";
tprintf(bc, "\n");
goto top;
}
}
if(i)
{
memcpy(bc->debhist+LINESIZE*(bc->hcount & (HISTSIZE-1)),bc->debline,LINESIZE);
++bc->hcount;
}
}
void flushinput(bc *bc)
{
while(takedown(bc)>=0);
}