int
preadbuffer(void)
{
char *p, *q;
int more;
int something;
char savec;
if (parsefile->strpush) {
popstring();
if (--parsenleft >= 0)
return (*parsenextc++);
}
if (parsenleft == EOF_NLEFT || parsefile->buf == NULL)
return PEOF;
flushout(&output);
flushout(&errout);
again:
if (parselleft <= 0) {
if ((parselleft = preadfd()) == -1) {
parselleft = parsenleft = EOF_NLEFT;
return PEOF;
}
}
q = p = parsenextc;
/* delete nul characters */
something = 0;
for (more = 1; more;) {
switch (*p) {
case '\0':
p++; /* Skip nul */
goto check;
case '\t':
case ' ':
break;
case '\n':
parsenleft = q - parsenextc;
more = 0; /* Stop processing here */
break;
default:
something = 1;
break;
}
*q++ = *p++;
check:
if (--parselleft <= 0) {
parsenleft = q - parsenextc - 1;
if (parsenleft < 0)
goto again;
*q = '\0';
more = 0;
}
}
savec = *q;
*q = '\0';
#ifndef NO_HISTORY
if (parsefile->fd == 0 && hist && something) {
HistEvent he;
INTOFF;
history(hist, &he, whichprompt == 1 ? H_ENTER : H_ADD,
parsenextc);
INTON;
}
#endif
if (vflag) {
out2str(parsenextc);
flushout(out2);
}
*q = savec;
return *parsenextc++;
}
static int preadbuffer(void)
{
char *q;
int more;
#ifdef USE_LINENOISE
int something;
#endif
char savec;
if (unlikely(parsefile->strpush)) {
if (
parsefile->nleft == -1 &&
parsefile->strpush->ap &&
parsefile->nextc[-1] != ' ' &&
parsefile->nextc[-1] != '\t'
) {
return PEOA;
}
popstring();
return pgetc();
}
if (unlikely(parsefile->nleft == EOF_NLEFT ||
parsefile->buf == NULL))
return PEOF;
flushall();
more = parsefile->lleft;
if (more <= 0) {
again:
if ((more = preadfd()) <= 0) {
parsefile->lleft = parsefile->nleft = EOF_NLEFT;
return PEOF;
}
}
q = parsefile->nextc;
/* delete nul characters */
#ifdef USE_LINENOISE
something = 0;
#endif
for (;;) {
int c;
more--;
c = *q;
if (!c)
memmove(q, q + 1, more);
else {
q++;
if (c == '\n') {
parsefile->nleft = q - parsefile->nextc - 1;
break;
}
#ifdef USE_LINENOISE
switch (c) {
default:
something = 1;
/* fall through */
case '\t':
case ' ':
break;
}
#endif
}
if (more <= 0) {
parsefile->nleft = q - parsefile->nextc - 1;
if (parsefile->nleft < 0)
goto again;
break;
}
}
parsefile->lleft = more;
savec = *q;
*q = '\0';
#ifdef USE_LINENOISE
if (parsefile->fd == 0 && iflag && something) {
// linenoise doesn't expect the command terminator at the end of the history
// entry.
char command_terminator = q[-1];
q[-1] = '\0';
addtohistory(parsefile->nextc, strlen(parsefile->nextc));
// Restore the command terminator.
q[-1] = command_terminator;
}
#endif
if (vflag) {
out2str(parsefile->nextc);
#ifdef FLUSHERR
flushout(out2);
#endif
}
*q = savec;
return (signed char)*parsefile->nextc++;
}
