/* ARGSUSED */
static enum rofferr
roff_EQ(ROFF_ARGS)
{
roff_openeqn(r, *bufp + pos, ln, ppos, NULL);
return(ROFF_IGN);
}
/*
* Pre-treat a text line.
* Text lines can consist of equations, which must be handled apart from
* the regular text.
* Thus, use this function to step through a line checking if it has any
* equations embedded in it.
* This must handle multiple equations AND equations that do not end at
* the end-of-line, i.e., will re-enter in the next roff parse.
*/
static int
mdoc_preptext(struct mdoc *m, int line, char *buf, int offs)
{
char *start, *end;
char delim;
while ('\0' != buf[offs]) {
/* Mark starting position if eqn is set. */
start = NULL;
if ('\0' != (delim = roff_eqndelim(m->roff)))
if (NULL != (start = strchr(buf + offs, delim)))
*start++ = '\0';
/* Parse text as normal. */
if ( ! mdoc_ptext(m, line, buf, offs))
return(0);
/* Continue only if an equation exists. */
if (NULL == start)
break;
/* Read past the end of the equation. */
offs += start - (buf + offs);
assert(start == &buf[offs]);
if (NULL != (end = strchr(buf + offs, delim))) {
*end++ = '\0';
while (' ' == *end)
end++;
}
/* Parse the equation itself. */
roff_openeqn(m->roff, NULL, line, offs, buf);
/* Process a finished equation? */
if (roff_closeeqn(m->roff))
if ( ! mdoc_addeqn(m, roff_eqn(m->roff)))
return(0);
offs += (end - (buf + offs));
}
return(1);
}
