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732 lines
19 KiB
C++
732 lines
19 KiB
C++
#include "Terminal.h"
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#include <AK/AKString.h>
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#include <AK/StringBuilder.h>
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#include <SharedGraphics/Font.h>
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#include <SharedGraphics/Painter.h>
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#include <AK/StdLibExtras.h>
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#include <LibC/stdlib.h>
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#include <LibC/unistd.h>
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#include <LibC/stdio.h>
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#include <LibC/gui.h>
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//#define TERMINAL_DEBUG
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void Terminal::create_window()
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{
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m_pixel_width = m_columns * font().glyph_width() + m_inset * 2;
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m_pixel_height = (m_rows * (font().glyph_height() + m_line_spacing)) + (m_inset * 2) - m_line_spacing;
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GUI_WindowParameters params;
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params.rect = { { 300, 300 }, { m_pixel_width, m_pixel_height } };
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params.background_color = 0x000000;
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strcpy(params.title, "Terminal");
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m_window_id = gui_create_window(¶ms);
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ASSERT(m_window_id > 0);
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if (m_window_id < 0) {
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perror("gui_create_window");
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exit(1);
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}
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// NOTE: We never release the backing store.
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GUI_WindowBackingStoreInfo info;
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int rc = gui_get_window_backing_store(m_window_id, &info);
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if (rc < 0) {
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perror("gui_get_window_backing_store");
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exit(1);
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}
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m_backing = GraphicsBitmap::create_wrapper(info.size, info.pixels);
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dbgprintf("(Terminal:%d) window backing %ux%u @ %p\n", getpid(), info.size.width, info.size.height, info.pixels);
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}
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Terminal::Terminal()
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: m_font(Font::default_font())
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{
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m_line_height = font().glyph_height() + m_line_spacing;
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set_size(80, 25);
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m_horizontal_tabs = static_cast<byte*>(malloc(columns()));
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for (unsigned i = 0; i < columns(); ++i)
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m_horizontal_tabs[i] = (i % 8) == 0;
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// Rightmost column is always last tab on line.
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m_horizontal_tabs[columns() - 1] = 1;
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m_lines = new Line*[rows()];
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for (size_t i = 0; i < rows(); ++i)
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m_lines[i] = new Line(columns());
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}
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Terminal::Line::Line(word columns)
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: length(columns)
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{
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characters = new byte[length];
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attributes = new Attribute[length];
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did_paint = false;
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memset(characters, ' ', length);
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}
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Terminal::Line::~Line()
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{
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delete [] characters;
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delete [] attributes;
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}
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void Terminal::Line::clear()
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{
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dirty = true;
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memset(characters, ' ', length);
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for (word i = 0 ; i < length; ++i)
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attributes[i].reset();
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}
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Terminal::~Terminal()
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{
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for (size_t i = 0; i < m_rows; ++i)
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delete m_lines[i];
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delete [] m_lines;
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free(m_horizontal_tabs);
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}
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void Terminal::clear()
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{
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for (size_t i = 0; i < rows(); ++i)
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line(i).clear();
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set_cursor(0, 0);
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}
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inline bool is_valid_parameter_character(byte ch)
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{
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return ch >= 0x30 && ch <= 0x3f;
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}
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inline bool is_valid_intermediate_character(byte ch)
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{
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return ch >= 0x20 && ch <= 0x2f;
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}
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inline bool is_valid_final_character(byte ch)
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{
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return ch >= 0x40 && ch <= 0x7e;
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}
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unsigned parse_uint(const String& str, bool& ok)
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{
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unsigned value = 0;
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for (size_t i = 0; i < str.length(); ++i) {
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if (str[i] < '0' || str[i] > '9') {
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ok = false;
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return 0;
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}
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value = value * 10;
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value += str[i] - '0';
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}
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ok = true;
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return value;
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}
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enum ANSIColor : byte {
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Black = 0,
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Red,
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Green,
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Brown,
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Blue,
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Magenta,
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Cyan,
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LightGray,
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DarkGray,
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BrightRed,
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BrightGreen,
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Yellow,
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BrightBlue,
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BrightMagenta,
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BrightCyan,
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White,
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};
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static inline Color ansi_color(unsigned color)
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{
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static const RGBA32 s_ansi_color[16] = {
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make_rgb(0, 0, 0), // Black
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make_rgb(225, 56, 43), // Red
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make_rgb(57, 181, 74), // Green
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make_rgb(255, 199, 6), // Brown
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make_rgb(0, 111, 184), // Blue
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make_rgb(118, 38, 113), // Magenta
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make_rgb(44, 181, 233), // Cyan
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make_rgb(204, 204, 204), // LightGray
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make_rgb(128, 128, 128), // DarkGray
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make_rgb(255, 0, 0), // BrightRed
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make_rgb(0, 255, 0), // BrightGreen
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make_rgb(255, 255, 0), // Yellow
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make_rgb(0, 0, 255), // BrightBlue
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make_rgb(255, 0, 255), // BrightMagenta
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make_rgb(0, 255, 255), // BrightCyan
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make_rgb(255, 255, 255), // White
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};
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return s_ansi_color[color];
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}
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void Terminal::escape$m(const Vector<unsigned>& params)
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{
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for (auto param : params) {
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switch (param) {
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case 0:
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// Reset
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m_current_attribute.reset();
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break;
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case 1:
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// Bold
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//m_current_attribute.bold = true;
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break;
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case 30:
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case 31:
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case 32:
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case 33:
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case 34:
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case 35:
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case 36:
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case 37:
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// Foreground color
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m_current_attribute.foreground_color = param - 30;
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break;
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case 40:
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case 41:
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case 42:
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case 43:
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case 44:
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case 45:
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case 46:
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case 47:
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// Background color
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m_current_attribute.background_color = param - 30;
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break;
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}
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}
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}
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void Terminal::escape$s(const Vector<unsigned>&)
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{
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m_saved_cursor_row = m_cursor_row;
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m_saved_cursor_column = m_cursor_column;
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}
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void Terminal::escape$u(const Vector<unsigned>&)
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{
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set_cursor(m_saved_cursor_row, m_saved_cursor_column);
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}
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void Terminal::escape$H(const Vector<unsigned>& params)
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{
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unsigned row = 1;
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unsigned col = 1;
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if (params.size() >= 1)
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row = params[0];
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if (params.size() >= 2)
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col = params[1];
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set_cursor(row - 1, col - 1);
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}
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void Terminal::escape$A(const Vector<unsigned>& params)
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{
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int num = 1;
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if (params.size() >= 1)
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num = params[0];
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if (num == 0)
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num = 1;
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int new_row = (int)m_cursor_row - num;
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if (new_row < 0)
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new_row = 0;
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set_cursor(new_row, m_cursor_column);
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}
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void Terminal::escape$B(const Vector<unsigned>& params)
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{
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int num = 1;
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if (params.size() >= 1)
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num = params[0];
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if (num == 0)
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num = 1;
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int new_row = (int)m_cursor_row + num;
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if (new_row >= m_rows)
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new_row = m_rows - 1;
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set_cursor(new_row, m_cursor_column);
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}
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void Terminal::escape$C(const Vector<unsigned>& params)
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{
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int num = 1;
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if (params.size() >= 1)
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num = params[0];
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if (num == 0)
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num = 1;
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int new_column = (int)m_cursor_column + num;
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if (new_column >= m_columns)
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new_column = m_columns - 1;
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set_cursor(m_cursor_row, new_column);
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}
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void Terminal::escape$D(const Vector<unsigned>& params)
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{
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int num = 1;
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if (params.size() >= 1)
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num = params[0];
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if (num == 0)
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num = 1;
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int new_column = (int)m_cursor_column - num;
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if (new_column < 0)
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new_column = 0;
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set_cursor(m_cursor_row, new_column);
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}
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void Terminal::escape$K(const Vector<unsigned>& params)
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{
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int mode = 0;
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if (params.size() >= 1)
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mode = params[0];
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switch (mode) {
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case 0:
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for (int i = m_cursor_column; i < m_columns; ++i) {
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put_character_at(m_cursor_row, i, ' ');
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}
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break;
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case 1:
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// FIXME: Clear from cursor to beginning of screen.
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unimplemented_escape();
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break;
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case 2:
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unimplemented_escape();
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break;
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default:
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unimplemented_escape();
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break;
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}
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}
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void Terminal::escape$J(const Vector<unsigned>& params)
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{
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int mode = 0;
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if (params.size() >= 1)
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mode = params[0];
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switch (mode) {
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case 0:
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// Clear from cursor to end of screen.
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for (int i = m_cursor_column; i < m_columns; ++i) {
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put_character_at(m_cursor_row, i, ' ');
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}
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for (int row = m_cursor_row + 1; row < m_rows; ++row) {
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for (int column = 0; column < m_columns; ++column) {
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put_character_at(row, column, ' ');
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}
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}
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break;
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case 1:
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// FIXME: Clear from cursor to beginning of screen.
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unimplemented_escape();
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break;
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case 2:
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clear();
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break;
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case 3:
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// FIXME: <esc>[3J should also clear the scrollback buffer.
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clear();
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break;
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default:
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unimplemented_escape();
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break;
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}
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}
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void Terminal::execute_xterm_command()
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{
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m_final = '@';
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bool ok;
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unsigned value = parse_uint(String((const char*)m_xterm_param1.data(), m_xterm_param1.size()), ok);
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if (ok) {
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switch (value) {
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case 0:
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set_window_title(String((const char*)m_xterm_param2.data(), m_xterm_param2.size()));
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break;
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default:
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unimplemented_xterm_escape();
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break;
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}
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}
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m_xterm_param1.clear_with_capacity();
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m_xterm_param2.clear_with_capacity();
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}
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void Terminal::execute_escape_sequence(byte final)
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{
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m_final = final;
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auto paramparts = String((const char*)m_parameters.data(), m_parameters.size()).split(';');
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Vector<unsigned> params;
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for (auto& parampart : paramparts) {
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bool ok;
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unsigned value = parse_uint(parampart, ok);
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if (!ok) {
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// FIXME: Should we do something else?
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return;
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}
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params.append(value);
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}
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switch (final) {
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case 'A': escape$A(params); break;
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case 'B': escape$B(params); break;
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case 'C': escape$C(params); break;
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case 'D': escape$D(params); break;
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case 'H': escape$H(params); break;
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case 'J': escape$J(params); break;
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case 'K': escape$K(params); break;
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case 'm': escape$m(params); break;
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case 's': escape$s(params); break;
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case 'u': escape$u(params); break;
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default:
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dbgprintf("Terminal::execute_escape_sequence: Unhandled final '%c'\n", final);
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break;
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}
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m_parameters.clear();
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m_intermediates.clear();
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}
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void Terminal::scroll_up()
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{
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word new_row = m_cursor_row;
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if (m_cursor_row == (rows() - 1)) {
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// NOTE: We have to invalidate the cursor first.
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invalidate_cursor();
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delete m_lines[0];
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for (word row = 1; row < rows(); ++row)
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m_lines[row - 1] = m_lines[row];
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m_lines[m_rows - 1] = new Line(m_columns);
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++m_rows_to_scroll_backing_store;
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} else {
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++new_row;
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}
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set_cursor(new_row, 0);
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}
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void Terminal::set_cursor(unsigned row, unsigned column)
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{
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if (row == m_cursor_row && column == m_cursor_column)
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return;
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ASSERT(row < rows());
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ASSERT(column < columns());
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invalidate_cursor();
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m_cursor_row = row;
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m_cursor_column = column;
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if (column != columns() - 1)
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m_stomp = false;
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invalidate_cursor();
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}
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void Terminal::put_character_at(unsigned row, unsigned column, byte ch)
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{
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ASSERT(row < rows());
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ASSERT(column < columns());
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line(row).characters[column] = ch;
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line(row).attributes[column] = m_current_attribute;
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line(row).dirty = true;
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}
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void Terminal::on_char(byte ch)
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{
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#ifdef TERMINAL_DEBUG
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dbgprintf("Terminal::on_char: %b (%c)\n", ch, ch);
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#endif
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switch (m_escape_state) {
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case ExpectBracket:
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if (ch == '[')
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m_escape_state = ExpectParameter;
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else if (ch == ']')
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m_escape_state = ExpectXtermParameter1;
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else
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m_escape_state = Normal;
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return;
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case ExpectXtermParameter1:
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if (ch != ';') {
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m_xterm_param1.append(ch);
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return;
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}
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m_escape_state = ExpectXtermParameter2;
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return;
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case ExpectXtermParameter2:
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if (ch != '\007') {
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m_xterm_param2.append(ch);
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return;
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}
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m_escape_state = ExpectXtermFinal;
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// fall through
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case ExpectXtermFinal:
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m_escape_state = Normal;
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if (ch == '\007')
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execute_xterm_command();
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return;
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case ExpectParameter:
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if (is_valid_parameter_character(ch)) {
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m_parameters.append(ch);
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return;
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}
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m_escape_state = ExpectIntermediate;
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// fall through
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case ExpectIntermediate:
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if (is_valid_intermediate_character(ch)) {
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m_intermediates.append(ch);
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return;
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}
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m_escape_state = ExpectFinal;
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// fall through
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case ExpectFinal:
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if (is_valid_final_character(ch)) {
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m_escape_state = Normal;
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execute_escape_sequence(ch);
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return;
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}
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m_escape_state = Normal;
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return;
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case Normal:
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break;
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}
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switch (ch) {
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case '\0':
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return;
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case '\033':
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m_escape_state = ExpectBracket;
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return;
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case 8: // Backspace
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if (m_cursor_column) {
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set_cursor(m_cursor_row, m_cursor_column - 1);
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put_character_at(m_cursor_row, m_cursor_column, ' ');
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return;
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}
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return;
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case '\a':
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// FIXME: Bell!
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return;
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case '\t': {
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for (unsigned i = m_cursor_column; i < columns(); ++i) {
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if (m_horizontal_tabs[i]) {
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set_cursor(m_cursor_row, i);
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return;
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}
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}
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return;
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}
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case '\r':
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set_cursor(m_cursor_row, 0);
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return;
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case '\n':
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scroll_up();
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return;
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}
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auto new_column = m_cursor_column + 1;
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if (new_column < columns()) {
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put_character_at(m_cursor_row, m_cursor_column, ch);
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set_cursor(m_cursor_row, new_column);
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} else {
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if (m_stomp) {
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m_stomp = false;
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scroll_up();
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put_character_at(m_cursor_row, m_cursor_column, ch);
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set_cursor(m_cursor_row, 1);
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} else {
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// Curious: We wait once on the right-hand side
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m_stomp = true;
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put_character_at(m_cursor_row, m_cursor_column, ch);
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}
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}
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}
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void Terminal::inject_string(const String& str)
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{
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for (size_t i = 0; i < str.length(); ++i)
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on_char(str[i]);
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}
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void Terminal::unimplemented_escape()
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{
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StringBuilder builder;
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builder.appendf("((Unimplemented escape: %c", m_final);
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if (!m_parameters.is_empty()) {
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builder.append(" parameters:");
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for (size_t i = 0; i < m_parameters.size(); ++i)
|
|
builder.append((char)m_parameters[i]);
|
|
}
|
|
if (!m_intermediates.is_empty()) {
|
|
builder.append(" intermediates:");
|
|
for (size_t i = 0; i < m_intermediates.size(); ++i)
|
|
builder.append((char)m_intermediates[i]);
|
|
}
|
|
builder.append("))");
|
|
inject_string(builder.to_string());
|
|
}
|
|
|
|
void Terminal::unimplemented_xterm_escape()
|
|
{
|
|
auto message = String::format("((Unimplemented xterm escape: %c))\n", m_final);
|
|
inject_string(message);
|
|
}
|
|
|
|
void Terminal::set_size(word columns, word rows)
|
|
{
|
|
m_columns = columns;
|
|
m_rows = rows;
|
|
}
|
|
|
|
Rect Terminal::glyph_rect(word row, word column)
|
|
{
|
|
int y = row * m_line_height;
|
|
int x = column * font().glyph_width();
|
|
return { x + m_inset, y + m_inset, font().glyph_width(), font().glyph_height() };
|
|
}
|
|
|
|
Rect Terminal::row_rect(word row)
|
|
{
|
|
int y = row * m_line_height;
|
|
return { m_inset, y + m_inset, font().glyph_width() * m_columns, font().glyph_height() };
|
|
}
|
|
|
|
inline Terminal::Attribute& Terminal::attribute_at(word row, word column)
|
|
{
|
|
ASSERT(row < m_rows);
|
|
ASSERT(column < m_columns);
|
|
return line(row).attributes[column];
|
|
}
|
|
|
|
bool Terminal::Line::has_only_one_background_color() const
|
|
{
|
|
if (!length)
|
|
return true;
|
|
// FIXME: Cache this result?
|
|
auto color = attributes[0].background_color;
|
|
for (size_t i = 1; i < length; ++i) {
|
|
if (attributes[i].background_color != color)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void Terminal::paint()
|
|
{
|
|
Rect rect { 0, 0, m_pixel_width, m_pixel_height };
|
|
Painter painter(*m_backing);
|
|
|
|
for (size_t i = 0; i < rows(); ++i)
|
|
line(i).did_paint = false;
|
|
|
|
if (m_rows_to_scroll_backing_store && m_rows_to_scroll_backing_store < m_rows) {
|
|
int first_scanline = m_inset;
|
|
int second_scanline = m_inset + (m_rows_to_scroll_backing_store * m_line_height);
|
|
int num_rows_to_memcpy = m_rows - m_rows_to_scroll_backing_store;
|
|
int scanlines_to_copy = (num_rows_to_memcpy * m_line_height) - m_line_spacing;
|
|
fast_dword_copy(
|
|
m_backing->scanline(first_scanline),
|
|
m_backing->scanline(second_scanline),
|
|
scanlines_to_copy * m_pixel_width
|
|
);
|
|
m_need_full_invalidation = true;
|
|
line(max(0, m_cursor_row - m_rows_to_scroll_backing_store)).dirty = true;
|
|
}
|
|
m_rows_to_scroll_backing_store = 0;
|
|
|
|
for (word row = 0; row < m_rows; ++row) {
|
|
auto& line = this->line(row);
|
|
if (!line.dirty)
|
|
continue;
|
|
line.dirty = false;
|
|
bool has_only_one_background_color = line.has_only_one_background_color();
|
|
if (has_only_one_background_color)
|
|
painter.fill_rect(row_rect(row), line.attributes[0].background_color);
|
|
for (word column = 0; column < m_columns; ++column) {
|
|
auto& attribute = line.attributes[column];
|
|
line.did_paint = true;
|
|
char ch = line.characters[column];
|
|
auto character_rect = glyph_rect(row, column);
|
|
if (!has_only_one_background_color) {
|
|
auto character_background = ansi_color(attribute.background_color);
|
|
painter.fill_rect(character_rect, character_background);
|
|
}
|
|
if (ch == ' ')
|
|
continue;
|
|
painter.draw_glyph(character_rect.location(), ch, ansi_color(attribute.foreground_color));
|
|
}
|
|
}
|
|
|
|
auto cursor_rect = glyph_rect(m_cursor_row, m_cursor_column);
|
|
if (m_in_active_window)
|
|
painter.fill_rect(cursor_rect, Color::MidGray);
|
|
else
|
|
painter.draw_rect(cursor_rect, Color::MidGray);
|
|
|
|
line(m_cursor_row).did_paint = true;
|
|
|
|
if (m_belling) {
|
|
m_need_full_invalidation = true;
|
|
painter.draw_rect(rect, Color::Red);
|
|
}
|
|
|
|
if (m_need_full_invalidation) {
|
|
did_paint();
|
|
m_need_full_invalidation = false;
|
|
return;
|
|
}
|
|
|
|
Rect painted_rect;
|
|
for (int i = 0; i < m_rows; ++i) {
|
|
if (line(i).did_paint)
|
|
painted_rect = painted_rect.united(row_rect(i));
|
|
}
|
|
did_paint(painted_rect);
|
|
}
|
|
|
|
void Terminal::did_paint(const Rect& a_rect)
|
|
{
|
|
GUI_Rect rect = a_rect;
|
|
int rc = gui_notify_paint_finished(m_window_id, a_rect.is_null() ? nullptr : &rect);
|
|
if (rc < 0) {
|
|
perror("gui_notify_paint_finished");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
void Terminal::update()
|
|
{
|
|
Rect rect;
|
|
for (int i = 0; i < m_rows; ++i) {
|
|
if (line(i).did_paint)
|
|
rect = rect.united(row_rect(i));
|
|
}
|
|
GUI_Rect gui_rect = rect;
|
|
int rc = gui_invalidate_window(m_window_id, rect.is_null() ? nullptr : &gui_rect);
|
|
if (rc < 0) {
|
|
perror("gui_invalidate_window");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
void Terminal::set_window_title(const String& title)
|
|
{
|
|
int rc = gui_set_window_title(m_window_id, title.characters(), title.length());
|
|
if (rc < 0) {
|
|
perror("gui_set_window_title");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
void Terminal::set_in_active_window(bool b)
|
|
{
|
|
if (m_in_active_window == b)
|
|
return;
|
|
m_in_active_window = b;
|
|
invalidate_cursor();
|
|
update();
|
|
}
|
|
|
|
void Terminal::invalidate_cursor()
|
|
{
|
|
line(m_cursor_row).dirty = true;
|
|
}
|