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csi: implement CSI Pn P (DCH - delete character)

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Daniel Eklöf 2019-06-22 21:31:28 +02:00
parent 4c7dbee221
commit e600e75810
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GPG key ID: 5BBD4992C116573F
1 changed files with 51 additions and 24 deletions
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75
csi.c
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@ -14,6 +14,8 @@
#include "log.h" #include "log.h"
#include "grid.h" #include "grid.h"
#define min(x, y) ((x) < (y) ? (x) : (y))
static bool static bool
csi_sgr(struct terminal *term) csi_sgr(struct terminal *term)
{ {
@ -136,11 +138,39 @@ csi_dispatch(struct terminal *term, uint8_t final)
case 'm': case 'm':
return csi_sgr(term); return csi_sgr(term);
case 'A': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
grid_cursor_up(&term->grid, count);
//LOG_DBG("CSI: A: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col);
break;
}
case 'B': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
grid_cursor_down(&term->grid, count);
//LOG_DBG("CSI: B: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col);
break;
}
case 'C': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
grid_cursor_right(&term->grid, count);
//LOG_DBG("CSI: C: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col);
break;
}
case 'D': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1;
grid_cursor_left(&term->grid, count);
//LOG_DBG("CSI: D: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col);
break;
}
case 'J': { case 'J': {
/* Erase screen */ /* Erase screen */
int param = 0; int param = 0;
if (term->vt.params.idx >= 1) if (term->vt.params.idx > 0)
param = term->vt.params.v[0].value; param = term->vt.params.v[0].value;
int start = -1; int start = -1;
@ -177,7 +207,7 @@ csi_dispatch(struct terminal *term, uint8_t final)
/* Erase line */ /* Erase line */
int param = 0; int param = 0;
if (term->vt.params.idx >= 0) if (term->vt.params.idx > 0)
param = term->vt.params.v[0].value; param = term->vt.params.v[0].value;
int start = -1; int start = -1;
@ -216,31 +246,28 @@ csi_dispatch(struct terminal *term, uint8_t final)
break; break;
} }
case 'A': { case 'P': {
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1; /* DCH: Delete character */
grid_cursor_up(&term->grid, count); int param = 1;
//LOG_DBG("CSI: A: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col); if (term->vt.params.idx > 0)
break; param = term->vt.params.v[0].value;
}
case 'B': { /* Only delete up to the right margin */
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1; const int max_end = grid_cursor_linear(
grid_cursor_down(&term->grid, count); &term->grid, term->grid.cursor.row, term->grid.cols);
//LOG_DBG("CSI: B: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col);
break;
}
case 'C': { int start = term->grid.linear_cursor;
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1; int end = min(start + param, max_end);
grid_cursor_right(&term->grid, count);
//LOG_DBG("CSI: C: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col);
break;
}
case 'D': { /* Erase the requested number of characters */
int count = term->vt.params.idx > 0 ? term->vt.params.v[0].value : 1; grid_erase(&term->grid, start, end);
grid_cursor_left(&term->grid, count);
//LOG_DBG("CSI: D: row = %d, col = %d", term->grid.cursor.row, term->grid.cursor.col); /* Move remaining (up til the right margin) characters */
int count = max_end - end;
memmove(&term->grid.cells[start],
&term->grid.cells[end],
count * sizeof(term->grid.cells[0]));
grid_damage_update(&term->grid, term->grid.linear_cursor, count);
break; break;
} }