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csi: add function param_get()
Returns the value of parameter #idx, if available, or the specified default value. If the specified parameter does exist, but is 0, the default value is returned.
This commit is contained in:
Daniel Eklöf
parent
da0a65d499
commit
5b53fda5e6
1 changed files with 36 additions and 58 deletions
94
csi.c
94
csi.c
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@ -61,6 +61,17 @@ initialize_colors256(void)
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colors256[232 + i] = (11 * i) << 24 | (11 * i) << 16 | (11 * i) << 8 | 0xff;
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}
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static int
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param_get(const struct terminal *term, size_t idx, int default_value)
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{
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if (term->vt.params.idx > idx) {
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int value = term->vt.params.v[idx].value;
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return value != 0 ? value : default_value;
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}
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return default_value;
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}
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static void
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sgr_reset(struct terminal *term)
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{
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@ -248,9 +259,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'd': {
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/* VPA - vertical line position absolute */
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int row = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (row == 0)
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row = 1;
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int row = param_get(term, 0, 1);
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if (row > term->grid.rows)
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row = term->grid.rows;
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@ -262,44 +271,26 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'm':
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return csi_sgr(term);
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case 'A': {
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int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (count == 0)
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count = 1;
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grid_cursor_up(&term->grid, count);
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case 'A':
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grid_cursor_up(&term->grid, param_get(term, 0, 1));
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break;
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}
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case 'e':
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case 'B': {
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int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (count == 0)
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count = 1;
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grid_cursor_down(&term->grid, count);
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case 'B':
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grid_cursor_down(&term->grid, param_get(term, 0, 1));
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break;
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}
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case 'C': {
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int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (count == 0)
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count = 1;
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grid_cursor_right(&term->grid, count);
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case 'C':
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grid_cursor_right(&term->grid, param_get(term, 0, 1));
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break;
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}
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case 'D': {
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int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (count == 0)
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count = 1;
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grid_cursor_left(&term->grid, count);
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case 'D':
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grid_cursor_left(&term->grid, param_get(term, 0, 1));
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break;
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}
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case 'G': {
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/* Cursor horizontal absolute */
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int col = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (col == 0)
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col = 1;
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int col = param_get(term, 0, 1);
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if (col > term->grid.cols)
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col = term->grid.cols;
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@ -310,13 +301,8 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'H': {
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/* Move cursor */
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int row = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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int col = term->vt.params.idx > 1 ? term->vt.params.v[1].value : 1;
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if (row == 0)
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row = 1;
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if (col == 0)
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col = 1;
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int row = param_get(term, 0, 1);
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int col = param_get(term, 1, 1);
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if (row > term->grid.rows)
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row = term->grid.rows;
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@ -330,7 +316,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'J': {
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/* Erase screen */
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int param = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 0;
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int param = param_get(term, 0, 0);
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int start = -1;
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int end = -1;
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switch (param) {
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@ -364,7 +350,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'K': {
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/* Erase line */
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int param = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 0;
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int param = param_get(term, 0, 0);
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int start = -1;
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int end = -1;
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switch (param) {
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@ -405,7 +391,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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break;
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int count = min(
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term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1,
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param_get(term, 0, 1),
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term->grid.scrolling_region.end - term->grid.cursor.row);
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LOG_DBG("reverse partial: %d, %d rows",
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@ -425,7 +411,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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break;
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int count = min(
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term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1,
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param_get(term, 0, 1),
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term->grid.scrolling_region.end - term->grid.cursor.row);
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grid_scroll_partial(
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@ -437,38 +423,30 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'P': {
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/* DCH: Delete character */
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int param = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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if (param == 0)
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param = 1;
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int count = param_get(term, 0, 1);
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/* Only delete up to the right margin */
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const int max_end = grid_cursor_linear(
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&term->grid, term->grid.cursor.row, term->grid.cols);
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int start = term->grid.linear_cursor;
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int end = min(start + param, max_end);
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int end = min(start + count, max_end);
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/* Erase the requested number of characters */
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grid_erase(&term->grid, start, end);
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/* Move remaining (up til the right margin) characters */
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int count = max_end - end;
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int remaining = max_end - end;
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memmove(&term->grid.cells[start],
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&term->grid.cells[end],
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count * sizeof(term->grid.cells[0]));
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grid_damage_update(&term->grid, term->grid.linear_cursor, count);
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remaining * sizeof(term->grid.cells[0]));
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grid_damage_update(&term->grid, term->grid.linear_cursor, remaining);
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break;
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}
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case 'r': {
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int start = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
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int end = term->vt.params.idx > 1
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? term->vt.params.v[1].value : term->grid.rows;
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if (start == 0)
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start = 1;
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if (end == 0)
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end = term->grid.rows;
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int start = param_get(term, 0, 1);
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int end = param_get(term, 1, term->grid.rows);
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/* 1-based */
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term->grid.scrolling_region.start = start - 1;
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@ -496,7 +474,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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case 'n': {
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if (term->vt.params.idx > 0) {
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int param = term->vt.params.v[0].value;
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int param = param_get(term, 0, 0);
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switch (param) {
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case 6: {
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/* u7 - cursor position query */
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@ -679,7 +657,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
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term->vt.intermediates.data[0] == '>') {
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switch (final) {
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case 'c': {
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int param = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 0;
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int param = param_get(term, 0, 0);
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if (param != 0) {
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LOG_ERR(
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"unimplemented: send device attributes with param = %d",
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