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/*
* Copyright 2005 Timo Hirvonen
*/
#include <cmdline.h>
#include <uchar.h>
#include <xmalloc.h>
struct cmdline cmdline;
void cmdline_init(void)
{
cmdline.blen = 0;
cmdline.clen = 0;
cmdline.bpos = 0;
cmdline.cpos = 0;
cmdline.size = 128;
cmdline.line = xnew(char, cmdline.size);
cmdline.line[0] = 0;
}
void cmdline_insert_ch(uchar ch)
{
int size;
size = u_char_size(ch);
if (cmdline.blen + size > cmdline.size) {
cmdline.size *= 2;
cmdline.line = xrenew(char, cmdline.line, cmdline.size);
}
memmove(cmdline.line + cmdline.bpos + size,
cmdline.line + cmdline.bpos,
cmdline.blen - cmdline.bpos + 1);
u_set_char_raw(cmdline.line, &cmdline.bpos, ch);
cmdline.cpos++;
cmdline.blen += size;
cmdline.clen++;
}
void cmdline_backspace(void)
{
int bpos, size;
if (cmdline.bpos == 0)
return;
bpos = cmdline.bpos;
u_prev_char_pos(cmdline.line, &bpos);
size = cmdline.bpos - bpos;
memmove(cmdline.line + bpos,
cmdline.line + cmdline.bpos,
cmdline.blen - cmdline.bpos + 1);
cmdline.bpos -= size;
cmdline.cpos--;
cmdline.blen -= size;
cmdline.clen--;
}
void cmdline_backspace_to_bol(void)
{
while (cmdline.bpos)
cmdline_backspace();
}
void cmdline_delete_ch(void)
{
uchar ch;
int size, bpos;
if (cmdline.bpos == cmdline.blen)
return;
bpos = cmdline.bpos;
u_get_char(cmdline.line, &bpos, &ch);
size = u_char_size(ch);
cmdline.blen -= size;
cmdline.clen--;
memmove(cmdline.line + cmdline.bpos,
cmdline.line + cmdline.bpos + size,
cmdline.blen - cmdline.bpos + 1);
}
void cmdline_set_text(const char *text)
{
int len = strlen(text);
if (len >= cmdline.size) {
while (len >= cmdline.size)
cmdline.size *= 2;
cmdline.line = xrenew(char, cmdline.line, cmdline.size);
}
memcpy(cmdline.line, text, len + 1);
cmdline.cpos = u_strlen(cmdline.line);
cmdline.bpos = len;
cmdline.clen = cmdline.cpos;
cmdline.blen = len;
}
void cmdline_clear(void)
{
cmdline.blen = 0;
cmdline.clen = 0;
cmdline.bpos = 0;
cmdline.cpos = 0;
cmdline.line[0] = 0;
}
void cmdline_clear_end(void)
{
cmdline.line[cmdline.bpos] = 0;
cmdline.clen = u_strlen(cmdline.line);
cmdline.blen = strlen(cmdline.line);
}
void cmdline_move_left(void)
{
if (cmdline.bpos > 0) {
cmdline.cpos--;
u_prev_char_pos(cmdline.line, &cmdline.bpos);
}
}
void cmdline_move_right(void)
{
if (cmdline.bpos < cmdline.blen) {
uchar ch;
u_get_char(cmdline.line, &cmdline.bpos, &ch);
cmdline.cpos++;
}
}
void cmdline_move_home(void)
{
cmdline.cpos = 0;
cmdline.bpos = 0;
}
void cmdline_move_end(void)
{
cmdline.cpos = cmdline.clen;
cmdline.bpos = cmdline.blen;
}
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