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/*
*
* debugger
*
*/
#include "defs.h"
#include "fns.h"
int printcol = 0;
int infile = STDIN;
int maxpos = MAXPOS;
Biobuf bstdout;
void
printc(int c)
{
dprint("%c", c);
}
/* was move to next f1-sized tab stop; now just print a tab */
int
tconv(Fmt *f)
{
return fmtstrcpy(f, "\t");
}
void
flushbuf(void)
{
if (printcol != 0)
printc(EOR);
}
void
prints(char *s)
{
dprint("%s",s);
}
void
newline(void)
{
printc(EOR);
}
#define MAXIFD 5
struct {
int fd;
int r9;
} istack[MAXIFD];
int ifiledepth;
void
iclose(int stack, int err)
{
if (err) {
if (infile) {
close(infile);
infile=STDIN;
}
while (--ifiledepth >= 0)
if (istack[ifiledepth].fd)
close(istack[ifiledepth].fd);
ifiledepth = 0;
} else if (stack == 0) {
if (infile) {
close(infile);
infile=STDIN;
}
} else if (stack > 0) {
if (ifiledepth >= MAXIFD)
error("$<< nested too deeply");
istack[ifiledepth].fd = infile;
ifiledepth++;
infile = STDIN;
} else {
if (infile) {
close(infile);
infile=STDIN;
}
if (ifiledepth > 0) {
infile = istack[--ifiledepth].fd;
}
}
}
void
oclose(void)
{
flushbuf();
Bterm(&bstdout);
Binit(&bstdout, 1, OWRITE);
}
void
redirout(char *file)
{
int fd;
if (file == 0){
oclose();
return;
}
flushbuf();
if ((fd = open(file, 1)) >= 0)
seek(fd, 0L, 2);
else if ((fd = create(file, 1, 0666)) < 0)
error("cannot create");
Bterm(&bstdout);
Binit(&bstdout, fd, OWRITE);
}
void
endline(void)
{
if (maxpos <= printcol)
newline();
}
void
flush(void)
{
Bflush(&bstdout);
}
int
dprint(char *fmt, ...)
{
int n, w;
char *p;
char buf[4096];
Rune r;
va_list arg;
if(mkfault)
return -1;
va_start(arg, fmt);
n = vseprint(buf, buf+sizeof buf, fmt, arg) - buf;
va_end(arg);
Bwrite(&bstdout, buf, n);
for(p=buf; *p; p+=w){
w = chartorune(&r, p);
if(r == '\n')
printcol = 0;
else
printcol++;
}
return n;
}
void
outputinit(void)
{
Binit(&bstdout, 1, OWRITE);
fmtinstall('t', tconv);
}
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