static inline off_t
line_pixel_length (unsigned char *t, off_t b, off_t l, gboolean utf8)
{
off_t xn, x; /* position conters */
off_t cw; /* character width in bytes */
#ifndef HAVE_CHARSET
(void) utf8;
#endif
for (xn = 0, x = 0; xn <= l; x = xn, b += cw)
{
char *tb;
tb = (char *) t + b;
cw = 1;
switch (tb[0])
{
case '\n':
return b;
case '\t':
xn = next_tab_pos (x);
break;
default:
#ifdef HAVE_CHARSET
if (utf8)
{
gunichar ch;
ch = g_utf8_get_char_validated (tb, -1);
if (ch != (gunichar) (-2) && ch != (gunichar) (-1))
{
char *next_ch;
/* Calculate UTF-8 char width */
next_ch = g_utf8_next_char (tb);
if (next_ch != NULL)
cw = next_ch - tb;
if (g_unichar_iswide (ch))
x++;
}
}
#endif
xn = x + 1;
break;
}
}
return b;
}
static int line_pixel_length (unsigned char *t, long b, int l)
{
int x = 0, c, xn = 0;
for (;;) {
c = t[b];
switch (c) {
case '\n':
return b;
case '\t':
xn = next_tab_pos (x);
break;
default:
xn = x + 1;
break;
}
if (xn > l)
break;
x = xn;
b++;
}
return b;
}