Keith Winstein
395 lines
10 KiB
C++
395 lines
10 KiB
C++
#include <unistd.h>
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#include "terminaldispatcher.hpp"
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#include "terminalframebuffer.hpp"
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using namespace Terminal;
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/* Terminal functions -- routines activated by CSI, escape or a C1 or C2 control char */
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static void clearline( Framebuffer *fb, int row, int start, int end )
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{
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for ( int col = start; col <= end; col++ ) {
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fb->get_cell( row, col )->reset();
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}
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}
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/* erase in line */
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void CSI_EL( Framebuffer *fb, Dispatcher *dispatch )
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{
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switch ( dispatch->getparam( 0, 0 ) ) {
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case 0: /* default: active position to end of line, inclusive */
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clearline( fb, -1, fb->ds.get_cursor_col(), fb->ds.get_width() - 1 );
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break;
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case 1: /* start of screen to active position, inclusive */
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clearline( fb, -1, 0, fb->ds.get_cursor_col() );
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break;
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case 2: /* all of line */
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clearline( fb, -1, 0, fb->ds.get_width() - 1 );
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break;
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}
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}
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static Function func_CSI_EL( CSI, "K", CSI_EL );
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/* erase in display */
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void CSI_ED( Framebuffer *fb, Dispatcher *dispatch ) {
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switch ( dispatch->getparam( 0, 0 ) ) {
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case 0: /* active position to end of screen, inclusive */
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clearline( fb, -1, fb->ds.get_cursor_col(), fb->ds.get_width() - 1 );
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for ( int y = fb->ds.get_cursor_row() + 1; y < fb->ds.get_height(); y++ ) {
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clearline( fb, y, 0, fb->ds.get_width() - 1 );
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}
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break;
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case 1: /* start of screen to active position, inclusive */
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for ( int y = 0; y < fb->ds.get_cursor_row(); y++ ) {
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clearline( fb, y, 0, fb->ds.get_width() - 1 );
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}
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clearline( fb, -1, 0, fb->ds.get_cursor_col() );
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break;
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case 2: /* entire screen */
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for ( int y = 0; y < fb->ds.get_height(); y++ ) {
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clearline( fb, y, 0, fb->ds.get_width() - 1 );
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}
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break;
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}
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}
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static Function func_CSI_ED( CSI, "J", CSI_ED );
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/* cursor movement -- relative and absolute */
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void CSI_cursormove( Framebuffer *fb, Dispatcher *dispatch )
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{
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int num = dispatch->getparam( 0, 1 );
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switch ( dispatch->get_dispatch_chars()[ 0 ] ) {
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case 'A':
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fb->ds.move_row( -num, true );
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break;
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case 'B':
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fb->ds.move_row( num, true );
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break;
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case 'C':
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fb->ds.move_col( num, true );
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break;
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case 'D':
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fb->ds.move_col( -num, true );
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break;
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case 'H':
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case 'f':
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int x = dispatch->getparam( 0, 1 );
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int y = dispatch->getparam( 1, 1 );
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fb->ds.move_row( x - 1 );
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fb->ds.move_col( y - 1 );
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}
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}
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static Function func_CSI_cursormove_A( CSI, "A", CSI_cursormove );
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static Function func_CSI_cursormove_B( CSI, "B", CSI_cursormove );
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static Function func_CSI_cursormove_C( CSI, "C", CSI_cursormove );
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static Function func_CSI_cursormove_D( CSI, "D", CSI_cursormove );
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static Function func_CSI_cursormove_H( CSI, "H", CSI_cursormove );
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static Function func_CSI_cursormove_f( CSI, "f", CSI_cursormove );
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/* device attributes */
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void CSI_DA( Framebuffer *fb __attribute((unused)), Dispatcher *dispatch )
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{
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dispatch->terminal_to_host.append( "\033[?62c" ); /* plain vt220 */
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}
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static Function func_CSI_DA( CSI, "c", CSI_DA );
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/* secondary device attributes */
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void CSI_SDA( Framebuffer *fb __attribute((unused)), Dispatcher *dispatch )
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{
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dispatch->terminal_to_host.append( "\033[>1;10;0c" ); /* plain vt220 */
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}
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static Function func_CSI_SDA( CSI, ">c", CSI_SDA );
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/* screen alignment diagnostic */
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void Esc_DECALN( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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for ( int y = 0; y < fb->ds.get_height(); y++ ) {
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for ( int x = 0; x < fb->ds.get_width(); x++ ) {
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fb->get_cell( y, x )->reset();
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fb->get_cell( y, x )->contents.push_back( L'E' );
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}
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}
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}
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static Function func_Esc_DECALN( ESCAPE, "#8", Esc_DECALN );
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/* line feed */
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void Ctrl_LF( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->move_rows_autoscroll( 1 );
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}
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/* same procedure for index, vertical tab, and form feed control codes */
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static Function func_Ctrl_LF( CONTROL, "\x0a", Ctrl_LF );
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static Function func_Ctrl_IND( CONTROL, "\x84", Ctrl_LF );
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static Function func_Ctrl_VT( CONTROL, "\x0b", Ctrl_LF );
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static Function func_Ctrl_FF( CONTROL, "\x0c", Ctrl_LF );
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/* carriage return */
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void Ctrl_CR( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->ds.move_col( 0 );
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}
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static Function func_Ctrl_CR( CONTROL, "\x0d", Ctrl_CR );
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/* backspace */
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void Ctrl_BS( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->ds.move_col( -1, true );
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}
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static Function func_Ctrl_BS( CONTROL, "\x08", Ctrl_BS );
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/* reverse index -- like a backwards line feed */
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void Ctrl_RI( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->move_rows_autoscroll( -1 );
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}
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static Function func_Ctrl_RI( CONTROL, "\x8D", Ctrl_RI );
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/* newline */
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void Ctrl_NEL( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->ds.move_col( 0 );
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fb->move_rows_autoscroll( 1 );
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}
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static Function func_Ctrl_NEL( CONTROL, "\x85", Ctrl_NEL );
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/* horizontal tab */
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void Ctrl_HT( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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int col = fb->ds.get_next_tab();
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if ( col == -1 ) { /* no tabs, go to end of line */
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fb->ds.move_col( fb->ds.get_width() - 1 );
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} else {
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fb->ds.move_col( col );
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}
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}
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static Function func_Ctrl_HT( CONTROL, "\x09", Ctrl_HT );
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/* horizontal tab set */
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void Ctrl_HTS( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->ds.set_tab();
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}
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static Function func_Ctrl_HTS( CONTROL, "\x88", Ctrl_HTS );
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/* tabulation clear */
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void CSI_TBC( Framebuffer *fb, Dispatcher *dispatch )
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{
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int param = dispatch->getparam( 0, 0 );
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switch ( param ) {
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case 0: /* clear this tab stop */
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fb->ds.clear_tab( fb->ds.get_cursor_col() );
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break;
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case 3: /* clear all tab stops */
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for ( int x = 0; x < fb->ds.get_width(); x++ ) {
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fb->ds.clear_tab( x );
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}
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break;
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}
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}
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static Function func_CSI_TBC( CSI, "g", CSI_TBC );
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static bool *get_DEC_mode( int param, Framebuffer *fb ) {
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switch ( param ) {
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case 3: /* 80/132 */
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/* clear screen */
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fb->ds.move_row( 0 );
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fb->ds.move_col( 0 );
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for ( int y = 0; y < fb->ds.get_height(); y++ ) {
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clearline( fb, y, 0, fb->ds.get_width() - 1 );
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}
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return NULL;
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case 6: /* origin */
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fb->ds.move_row( 0 );
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fb->ds.move_col( 0 );
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return &(fb->ds.origin_mode);
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case 7: /* auto wrap */
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return &(fb->ds.auto_wrap_mode);
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}
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return NULL;
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}
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/* set private mode */
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void CSI_DECSM( Framebuffer *fb, Dispatcher *dispatch )
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{
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for ( int i = 0; i < dispatch->param_count(); i++ ) {
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bool *mode = get_DEC_mode( dispatch->getparam( i, 0 ), fb );
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if ( mode ) {
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*mode = true;
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}
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}
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}
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/* clear private mode */
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void CSI_DECRM( Framebuffer *fb, Dispatcher *dispatch )
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{
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for ( int i = 0; i < dispatch->param_count(); i++ ) {
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bool *mode = get_DEC_mode( dispatch->getparam( i, 0 ), fb );
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if ( mode ) {
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*mode = false;
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}
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}
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}
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static Function func_CSI_DECSM( CSI, "?h", CSI_DECSM );
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static Function func_CSI_DECRM( CSI, "?l", CSI_DECRM );
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/* set top and bottom margins */
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void CSI_DECSTBM( Framebuffer *fb, Dispatcher *dispatch )
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{
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int top = dispatch->getparam( 0, 1 );
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int bottom = dispatch->getparam( 1, fb->ds.get_height() );
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fb->ds.set_scrolling_region( top - 1, bottom - 1 );
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fb->ds.move_row( 0 );
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fb->ds.move_col( 0 );
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}
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static Function func_CSI_DECSTMB( CSI, "r", CSI_DECSTBM );
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/* terminal bell -- ignored for now */
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void Ctrl_BEL( Framebuffer *fb __attribute((unused)), Dispatcher *dispatch __attribute((unused)) )
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{}
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static Function func_Ctrl_BEL( CONTROL, "\x07", Ctrl_BEL );
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/* select graphics rendition -- e.g., bold, blinking, etc. */
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void CSI_SGR( Framebuffer *fb, Dispatcher *dispatch )
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{
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for ( int i = 0; i < dispatch->param_count(); i++ ) {
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int rendition = dispatch->getparam( i, 0 );
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if ( rendition == 0 ) {
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fb->ds.clear_renditions();
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} else {
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fb->ds.add_rendition( rendition );
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}
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}
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}
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static Function func_CSI_SGR( CSI, "m", CSI_SGR );
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/* save and restore cursor */
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void Esc_DECSC( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->ds.save_cursor();
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}
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void Esc_DECRC( Framebuffer *fb, Dispatcher *dispatch __attribute((unused)) )
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{
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fb->ds.restore_cursor();
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}
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static Function func_Esc_DECSC( ESCAPE, "7", Esc_DECSC );
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static Function func_Esc_DECRC( ESCAPE, "8", Esc_DECRC );
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/* device status report -- e.g., cursor position (used by resize) */
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void CSI_DSR( Framebuffer *fb, Dispatcher *dispatch )
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{
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int param = dispatch->getparam( 0, 0 );
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switch ( param ) {
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case 5: /* device status report requested */
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dispatch->terminal_to_host.append( "\033[0n" );
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break;
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case 6: /* report of active position requested */
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char cpr[ 32 ];
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snprintf( cpr, 32, "\033[%d;%dR",
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fb->ds.get_cursor_row() + 1,
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fb->ds.get_cursor_col() + 1 );
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dispatch->terminal_to_host.append( cpr );
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break;
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}
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}
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static Function func_CSI_DSR( CSI, "n", CSI_DSR );
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/* insert line */
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void CSI_IL( Framebuffer *fb, Dispatcher *dispatch )
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{
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int lines = dispatch->getparam( 0, 1 );
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for ( int i = 0; i < lines; i++ ) {
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fb->insert_line( fb->ds.get_cursor_row() );
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}
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/* vt220 manual and Ecma-48 say to move to first column */
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/* but xterm and gnome-terminal don't */
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fb->ds.move_col( 0 );
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}
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static Function func_CSI_IL( CSI, "L", CSI_IL );
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/* delete line */
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void CSI_DL( Framebuffer *fb, Dispatcher *dispatch )
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{
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int lines = dispatch->getparam( 0, 1 );
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for ( int i = 0; i < lines; i++ ) {
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fb->delete_line( fb->ds.get_cursor_row() );
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}
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/* same story -- xterm and gnome-terminal don't
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move to first column */
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fb->ds.move_col( 0 );
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}
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static Function func_CSI_DL( CSI, "M", CSI_DL );
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/* insert characters */
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void CSI_ICH( Framebuffer *fb, Dispatcher *dispatch )
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{
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int cells = dispatch->getparam( 0, 1 );
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for ( int i = 0; i < cells; i++ ) {
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fb->insert_cell( fb->ds.get_cursor_row(), fb->ds.get_cursor_col() );
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}
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}
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static Function func_CSI_ICH( CSI, "@", CSI_ICH );
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/* delete character */
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void CSI_DCH( Framebuffer *fb, Dispatcher *dispatch )
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{
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int cells = dispatch->getparam( 0, 1 );
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for ( int i = 0; i < cells; i++ ) {
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fb->delete_cell( fb->ds.get_cursor_row(), fb->ds.get_cursor_col() );
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}
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}
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static Function func_CSI_DCH( CSI, "P", CSI_DCH );
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/* line position absolute */
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void CSI_VPA( Framebuffer *fb, Dispatcher *dispatch )
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{
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int row = dispatch->getparam( 0, 1 );
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fb->ds.move_row( row - 1 );
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}
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static Function func_CSI_VPA( CSI, "d", CSI_VPA );
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/* character position absolute */
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void CSI_HPA( Framebuffer *fb, Dispatcher *dispatch )
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{
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int col = dispatch->getparam( 0, 1 );
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fb->ds.move_col( col - 1 );
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}
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static Function func_CSI_CHA( CSI, "G", CSI_HPA ); /* ECMA-48 name: CHA */
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static Function func_CSI_HPA( CSI, "\x60", CSI_HPA ); /* ECMA-48 name: HPA */
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