/* str_grow guarantees that the Str buf has n free bytes
* returns a pointer to the new Str */
Str *
str_grow(Str *s, const int n)
{
Str *new_s;
if (str_avail(s) >= n)
return s;
new_s = lrealloc(s, offsetof(Str, data) + s->cap + n + 1);
new_s->cap =+ n;
new_s->data[new_s->cap] = '\0';
return new_s;
}
/*
* Insert a character. While defining a macro, create a "LINE" containing
* all inserted characters.
*/
int
selfinsert(int f, int n)
{
struct line *lp;
int c;
int count;
if (n < 0)
return (FALSE);
if (n == 0)
return (TRUE);
c = key.k_chars[key.k_count - 1];
if (macrodef && macrocount < MAXMACRO) {
if (f & FFARG)
macrocount -= 2;
/* last command was insert -- tack on the end */
if (lastflag & CFINS) {
macrocount--;
/* Ensure the line can handle the new characters */
if (maclcur->l_size < maclcur->l_used + n) {
if (lrealloc(maclcur, maclcur->l_used + n) ==
FALSE)
return (FALSE);
}
maclcur->l_used += n;
/* Copy in the new data */
for (count = maclcur->l_used - n;
count < maclcur->l_used; count++)
maclcur->l_text[count] = c;
} else {
macro[macrocount - 1].m_funct = insert;
if ((lp = lalloc(n)) == NULL)
return (FALSE);
lp->l_bp = maclcur;
lp->l_fp = maclcur->l_fp;
maclcur->l_fp = lp;
maclcur = lp;
for (count = 0; count < n; count++)
lp->l_text[count] = c;
}
thisflag |= CFINS;
}
if (c == '\n') {
do {
count = lnewline();
} while (--n && count == TRUE);
return (count);
}
/* overwrite mode */
if (curbp->b_flag & BFOVERWRITE) {
lchange(WFEDIT);
while (curwp->w_doto < llength(curwp->w_dotp) && n--)
lputc(curwp->w_dotp, curwp->w_doto++, c);
if (n <= 0)
return (TRUE);
}
return (linsert(n, c));
}
