cowmonk/cowterm
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Better handling of ansi escape code sequences for clearing

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Handling of ESC[0m especially
This commit is contained in:
cowmonk 2025-01-21 13:39:21 -07:00
parent 0437af53c3
commit 7e11c02405
1 changed files with 22 additions and 1 deletions
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cowterm.c
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@ -920,6 +920,9 @@ static void parse_ansi_code(const char *buf, int *idx, int max_len,
break;
case 'J': // Clear screen
if (params[0] == 2) {
current_color = XWhitePixel(display, DefaultScreen(display));
current_bg_color = XBlackPixel(display, DefaultScreen(display));
current_attr = 0;
for (int y = 0; y < term_rows; y++) {
memset(terminal_buffer[y], ' ', term_cols);
for (int x = 0; x < term_cols; x++) {
@ -976,11 +979,25 @@ static void parse_ansi_code(const char *buf, int *idx, int max_len,
cursor_y = 0;
break;
case 'm': // Handling of text
for (int i = 0; i < param_idx; i++) {
if (param_idx == 0 || (param_idx == 1 && params[0] == 0)) { // Handle ESC[0m
current_color = XWhitePixel(display, DefaultScreen(display));
current_bg_color = XBlackPixel(display, DefaultScreen(display));
current_attr = 0;
needs_refresh = 1;
break;
}
for (int i = 0; i < (int)param_idx; i++) {
if (params[i] == 0) { // Reset Everything
current_color = XWhitePixel(display, DefaultScreen(display));
current_bg_color = XBlackPixel(display, DefaultScreen(display));
current_attr = 0;
if (cursor_y >= 0 && cursor_y < term_rows) {
for (int x = cursor_x; x < term_cols; x++) {
color_buffer[cursor_y][x] = current_color;
bg_color_buffer[cursor_y][x] = current_bg_color;
attr_buffer[cursor_y][x] = current_attr;
}
}
} else if (params[i] == 1) { // Apply ATTRS
current_attr |= ATTR_BOLD;
} else if (params[i] == 2) {
@ -1001,8 +1018,12 @@ static void parse_ansi_code(const char *buf, int *idx, int max_len,
current_attr &= ~ATTR_REVERSE;
} else if (params[i] >= 30 && params[i] <= 37) { // Foreground colors
current_color = get_ansi_color(params[i] - 30);
} else if (params[i] == 39) { // Reset foreground color
current_color = XWhitePixel(display, DefaultScreen(display));
} else if (params[i] >= 40 && params[i] <= 47) { // Background colors
current_bg_color = get_ansi_color(params[i] - 40);
} else if (params[i] == 49) { // Reset background color
current_bg_color = XBlackPixel(display, DefaultScreen(display));
} else if (params[i] >= 90 && params[i] <= 97) { // Bright foreground
current_color = get_bright_ansi_color(params[i] - 90);
} else if (params[i] >= 100 && params[i] <= 107) { // Bright background