static void print_str(char *buf, int *idx, const char *str)
{
int d = *idx;
if (width) {
int ws_len;
int i = 0;
if (align_left) {
i = width;
d += u_copy_chars(buf + d, str, &i);
ws_len = width - i;
memset(buf + d, ' ', ws_len);
d += ws_len;
} else {
int s = 0;
ws_len = width - u_str_width(str);
if (ws_len > 0) {
memset(buf + d, ' ', ws_len);
d += ws_len;
i += ws_len;
}
if (ws_len < 0) {
int w, c = -ws_len;
uchar u;
while (c > 0) {
u = u_get_char(str, &s);
w = u_char_width(u);
c -= w;
}
if (c < 0) {
/* gaah, skipped too much */
if (u_char_width(u) == 2) {
/* double-byte */
buf[d++] = ' ';
} else {
/* <xx> */
if (c == -3)
buf[d++] = hex_tab[(u >> 4) & 0xf];
if (c <= -2)
buf[d++] = hex_tab[u & 0xf];
buf[d++] = '>';
}
}
}
if (width - i > 0) {
int w = width - i;
d += u_copy_chars(buf + d, str + s, &w);
}
}
} else {
int print_command(char prefix)
{
long i, w;
unsigned int u;
int x;
// width of characters up to and including cursor position
w = 1; // ":" (prefix)
i = 0;
while (i <= cmdline.pos && i < cmdline.buf.len) {
u = u_get_char(cmdline.buf.buffer, cmdline.buf.len, &i);
w += u_char_width(u);
}
if (cmdline.pos == cmdline.buf.len) {
w++;
}
if (w > screen_w)
obuf.scroll_x = w - screen_w;
set_builtin_color(BC_COMMANDLINE);
i = 0;
buf_put_char(prefix);
x = obuf.x - obuf.scroll_x;
while (i < cmdline.buf.len) {
BUG_ON(obuf.x > obuf.scroll_x + obuf.width);
u = u_get_char(cmdline.buf.buffer, cmdline.buf.len, &i);
if (!buf_put_char(u))
break;
if (i <= cmdline.pos)
x = obuf.x - obuf.scroll_x;
}
return x;
}
int u_str_width(const char *str)
{
int idx = 0, w = 0;
while (str[idx]) {
uchar u = u_get_char(str, &idx);
w += u_char_width(u);
}
return w;
}
int u_str_nwidth(const char *str, int len)
{
int idx = 0;
int w = 0;
while (len > 0) {
uchar u = u_get_char(str, &idx);
if (u == 0)
break;
w += u_char_width(u);
len--;
}
return w;
}
