* This patch add support for cursor move and reverse colors via ANSI espace codes in cfb_console driver * ANSI escape codes can be enabled/disabled via CONFIG_CFB_CONSOLE_ANSI
Signed-off-by: Pali Rohár <pali.ro...@gmail.com>
---
drivers/video/cfb_console.c | 205 ++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 204 insertions(+), 1 deletions(-)
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index 9e0f665..845efde 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -377,6 +377,10 @@ static int console_row; /* cursor row */
static u32 eorx, fgx, bgx; /* color pats */
+static char ansi_buf[10] = { 0, };
+static int ansi_buf_size = 0;
+static int ansi_colors_need_revert = 0;
+
static const int video_font_draw_table8[] = {
0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff,
0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff,
@@ -845,7 +849,7 @@ static void console_cr(void)
console_col = 0;
}
-void video_putc(const char c)
+static void parse_putc(const char c)
{
static int nl = 1;
@@ -888,6 +892,205 @@ void video_putc(const char c)
CURSOR_SET;
}
+void video_putc(const char c)
+{
+#ifdef CONFIG_CFB_CONSOLE_ANSI
+ int i;
+
+ if (c == 27) {
+ for (i = 0; i < ansi_buf_size; ++i)
+ parse_putc(ansi_buf[i]);
+ ansi_buf[0] = 27;
+ ansi_buf_size = 1;
+ return;
+ }
+
+ if (ansi_buf_size > 0) {
+ /*
+ 0 - ESC
+ 1 - [
+ 2 - num1
+ 3 - ..
+ 4 - ;
+ 5 - num2
+ 6 - ..
+ 7 - cchar
+ */
+ int next = 0;
+
+ int flush = 0;
+ int fail = 0;
+
+ int num1 = 0;
+ int num2 = 0;
+ int cchar = 0;
+
+ ansi_buf[ansi_buf_size++] = c;
+
+ if (ansi_buf_size >= sizeof (ansi_buf))
+ fail = 1;
+
+ for (i = 0; i < ansi_buf_size; ++i) {
+ if (fail)
+ break;
+
+ switch (next) {
+ case 0:
+ if (ansi_buf[i] == 27)
+ next = 1;
+ else
+ fail = 1;
+ break;
+
+ case 1:
+ if (ansi_buf[i] == '[')
+ next = 2;
+ else
+ fail = 1;
+ break;
+
+ case 2:
+ if (ansi_buf[i] >= '0' && ansi_buf[i] <= '9') {
+ num1 = ansi_buf[i]-'0';
+ next = 3;
+ } else {
+ --i;
+ num1 = 1;
+ next = 4;
+ }
+ break;
+
+ case 3:
+ if (ansi_buf[i] >= '0' && ansi_buf[i] <= '9') {
+ num1 *= 10;
+ num1 += ansi_buf[i]-'0';
+ } else {
+ --i;
+ next = 4;
+ }
+ break;
+
+ case 4:
+ if (ansi_buf[i] != ';') {
+ --i;
+ next = 7;
+ } else
+ next = 5;
+ break;
+
+ case 5:
+ if (ansi_buf[i] >= '0' && ansi_buf[i] <= '9') {
+ num2 = ansi_buf[i]-'0';
+ next = 6;
+ } else
+ fail = 1;
+ break;
+
+ case 6:
+ if (ansi_buf[i] >= '0' && ansi_buf[i] <= '9') {
+ num2 *= 10;
+ num2 += ansi_buf[i]-'0';
+ } else {
+ --i;
+ next = 7;
+ }
+ break;
+
+ case 7:
+ if ((ansi_buf[i] >= 'A' && ansi_buf[i] <= 'H')
|| ansi_buf[i] == 'J' || ansi_buf[i] == 'K' || ansi_buf[i] == 'm') {
+ cchar = ansi_buf[i];
+ flush = 1;
+ } else
+ fail = 1;
+ break;
+ }
+ }
+
+ if (fail)
+ {
+ for (i = 0; i < ansi_buf_size; ++i)
+ parse_putc(ansi_buf[i]);
+ ansi_buf_size = 0;
+ return;
+ }
+
+ if (flush)
+ {
+ CURSOR_OFF;
+ ansi_buf_size = 0;
+ switch (cchar) {
+ case 'A':
+ /* move cursor num1 rows up */
+ console_cursor_up(num1);
+ break;
+ case 'B':
+ /* move cursor num1 rows down */
+ console_cursor_down(num1);
+ break;
+ case 'C':
+ /* move cursor num1 columns forward */
+ console_cursor_right(num1);
+ break;
+ case 'D':
+ /* move cursor num1 columns back */
+ console_cursor_left(num1);
+ break;
+ case 'E':
+ /* move cursor num1 rows up at begin of row */
+ console_previewsline(num1);
+ break;
+ case 'F':
+ /* move cursor num1 rows down at begin of row */
+ console_newline(num1);
+ break;
+ case 'G':
+ /* move cursor to column num1 */
+ console_cursor_set_position(-1, num1-1);
+ break;
+ case 'H':
+ /* move cursor to row num1, column num2 */
+ console_cursor_set_position(num1-1, num2-1);
+ break;
+ case 'J':
+ /* clear console and move cursor to 0, 0 */
+ console_clear();
+ console_cursor_set_position(0, 0);
+ break;
+ case 'K':
+ /* clear line */
+ if (num1 == 0)
+ console_clear_line(console_row,
console_col, CONSOLE_COLS-1);
+ else if (num1 == 1)
+ console_clear_line(console_row, 0,
console_col);
+ else
+ console_clear_line(console_row, 0,
CONSOLE_COLS-1);
+ break;
+ case 'm':
+ if (num1 == 0) { /* reset swapped colors */
+ if (ansi_colors_need_revert) {
+ console_swap_colors();
+ ansi_colors_need_revert = 0;
+ }
+ } else if (num1 == 7) { /* swap colors (only
once) */
+ if (!ansi_colors_need_revert) {
+ console_swap_colors();
+ ansi_colors_need_revert = 1;
+ }
+ }
+ break;
+ }
+ CURSOR_SET;
+ }
+ }
+ else
+ {
+ parse_putc(c);
+ }
+#else
+ parse_putc(c);
+#endif
+}
+
void video_puts(const char *s)
{
int count = strlen(s);
--
1.7.5.4
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