https://github.com/jrincayc/ucblogo-code
Revision b2227ae71f14b631a8e1c9fead6fed7f2db2f6e6 authored by Dan Malec on 13 November 2020, 01:06:03 UTC, committed by Dan Malec on 13 November 2020, 02:04:05 UTC
On Raspberry Pi (ARM), converting the int output of getc to char and then back to int results in the EOF character being represented as 255 instead of -1. This causes infinite loops when attempting to detect the end of input from the editor.
1 parent a7bd4e1
Tip revision: b2227ae71f14b631a8e1c9fead6fed7f2db2f6e6 authored by Dan Malec on 13 November 2020, 01:06:03 UTC
ISSUE-67: Pass the output of getc as int.
ISSUE-67: Pass the output of getc as int.
Tip revision: b2227ae
wxTerminal.h
#ifndef INCLUDE_WXTERM
#define INCLUDE_WXTERM
#ifdef __GNUG__
#pragma interface
#endif
#include <wx/html/htmprint.h>
#include <wx/print.h>
#define CURSOR_BLINK_DEFAULT_TIMEOUT 300
#define CURSOR_BLINK_MAX_TIMEOUT 2000
#define wxEVT_COMMAND_TERM_RESIZE wxEVT_USER_FIRST + 1000
#define wxEVT_COMMAND_TERM_NEXT wxEVT_USER_FIRST + 1001
#define EVT_TERM_RESIZE(id, fn) { wxEVT_COMMAND_TERM_RESIZE, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) &fn, (wxObject *)NULL },
class TurtleWindowPrintout: public wxPrintout
{
public:
TurtleWindowPrintout(wxChar *title = _T("Turtle Graphics")):wxPrintout(title) {}
bool OnPrintPage(int page);
bool HasPage(int page);
bool OnBeginDocument(int startPage, int endPage);
void TurtlePrintPreview();
void GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo);
};
// Structures for maintaining characters and lines
#define WXTERM_CB_SIZE 8000
#define WXTERM_LB_SIZE 1000
struct wxterm_char_buffer {
char cbuf[WXTERM_CB_SIZE]; //characters
char mbuf[WXTERM_CB_SIZE]; //mode flags
wxterm_char_buffer *next; //next part of buffer
} ;
struct wxterm_charpos {
wxterm_char_buffer *buf; //which char buffer
int offset; //offset into buffer
int line_length; //length of line
} ;
#define inc_charpos(cp) cp.offset++; \
if(cp.offset == WXTERM_CB_SIZE) { \
if(!cp.buf->next) { \
cp.buf->next = (wxterm_char_buffer *) malloc(sizeof(wxterm_char_buffer)); \
memset(cp.buf->next, '\0', sizeof(wxterm_char_buffer)); \
} \
cp.buf = cp.buf->next; \
cp.offset = 0; \
}
// adjust offset >= WXTERM_CB_SIZE issues
#define adjust_charpos(cp) while(cp.offset >= WXTERM_CB_SIZE) { \
if(!cp.buf->next) { \
cp.buf->next = (wxterm_char_buffer *) malloc(sizeof(wxterm_char_buffer)); \
memset(cp.buf->next, '\0', sizeof(wxterm_char_buffer)); \
} \
cp.buf = cp.buf->next; \
cp.offset -= WXTERM_CB_SIZE; \
}
//lineposition consists of just a buffer and an offset.
#define inc_linepos(lp) lp.offset++; \
if(lp.offset == WXTERM_LB_SIZE) { \
if(!lp.buf->next) { \
lp.buf->next = (wxterm_line_buffer *) malloc(sizeof(wxterm_line_buffer)); \
memset(lp.buf->next, 0, sizeof(wxterm_line_buffer)); \
} \
lp.buf = lp.buf->next; \
lp.offset = 0; \
}
//adjust offset >= WXTERM_LB_SIZE issue
#define adjust_linepos(lp) while(lp.offset >= WXTERM_LB_SIZE) { \
if(!lp.buf->next) { \
lp.buf->next = (wxterm_line_buffer *) malloc(sizeof(wxterm_line_buffer)); \
memset(lp.buf->next, 0, sizeof(wxterm_line_buffer)); \
} \
lp.buf = lp.buf->next; \
lp.offset -= WXTERM_LB_SIZE; \
}
struct wxterm_line_buffer {
wxterm_charpos lbuf[WXTERM_LB_SIZE]; //lines
wxterm_line_buffer *next; //next part of buffer
};
struct wxterm_linepos {
wxterm_line_buffer *buf; //which line buffer
int offset; //offset into line buffer
};
#define line_of(lpos) lpos.buf->lbuf[lpos.offset]
#define char_of(cpos) cpos.buf->cbuf[cpos.offset]
#define mode_of(cpos) cpos.buf->mbuf[cpos.offset]
// enter/exit standout mode character
#define TOGGLE_STANDOUT 17
class wxTerminal : public wxScrolledWindow
{
public:
int m_charWidth;
int m_charHeight;
int m_width;
int m_height;
int m_curFG,
m_curBG;
private:
int m_selx1,
m_sely1,
m_selx2,
m_sely2,
m_seloldx1,
m_seloldy1,
m_seloldx2,
m_seloldy2,
m_curX,
m_curY,
m_curFlags;
//used in enableScrolling
int
m_vscroll_pos;
//number of input lines ready
int m_inputLines;
bool m_inputReady; //whether ENTER was hit.
bool
m_selecting;
// m_marking;
wxColour
// m_vt_colors[16],
// m_pc_colors[16],
m_colors[16];
wxPen
// m_vt_colorPens[16],
// m_pc_colorPens[16],
m_colorPens[16];
wxFont
m_normalFont,
m_underlinedFont,
m_boldFont,
m_boldUnderlinedFont;
wxMemoryDC
m_memDC;
FILE
*m_printerFN;
char
*m_printerName;
// character buffer
wxterm_char_buffer *term_chars;
wxterm_line_buffer *term_lines;
wxterm_charpos curr_char_pos;
wxterm_linepos curr_line_pos;
public:
int cursor_x, cursor_y;
public:
// mode flags
enum MODES
{
BOLD=0x1,
BLINK=0x2,
UNDERLINE=0x4,
INVERSE=0x8,
DEFERUPDATE=0x10,
// DESTRUCTBS=0x800,
CURSORINVISIBLE=0x20,
//SELECTED=0x40 // flag to indicate a char is selected
};
char m_currMode;
#if 0
enum BOLDSTYLE
{
DEFAULT = -1,
COLOR = 0,
OVERSTRIKE = 1,
FONT = 2
};
#endif
private:
// BOLDSTYLE m_boldStyle;
typedef struct
{
wxKeyCode
keyCode;
int
VTKeyCode;
} TermKeyMap;
public:
wxTerminal(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
int width = 81, int height = 25,
const wxString& name = _T("wxTerminal"));
virtual ~wxTerminal();
// For printing the text
wxHtmlEasyPrinting *htmlPrinter;
int
x_coord,
y_coord,
x_max,
y_max,
isEditFile;
static wxTerminal *terminal;
void GetCharSize(int *cw, int *ch);
bool SetFont(const wxFont& font);
void GetColors(wxColor colors[16]/*, wxTerminal::BOLDSTYLE boldStyle = wxTerminal::DEFAULT*/);
void deferUpdate(int);
void set_mode_flag(int flag);
void clear_mode_flag(int flag);
void ClearSelection();
bool HasSelection();
wxString GetChars(int x1,int y1,int x2, int y2);
wxString GetSelection();
void SelectAll();
wxterm_linepos GetLinePosition(int y);
wxterm_charpos GetCharPosition(int x, int y);
void DoCopy();
void DoPaste();
void ProcessInput();
void Flush ();
void OnSize(wxSizeEvent& event);
void terminalEvent (wxCommandEvent & event);
void PassInputToInterp();
void setCursor (int x, int y, bool fromLogo = FALSE);
//scrolling
void EnableScrolling(bool want_scrolling);
virtual void DrawText(wxDC& dc, int fg_color, int bg_color, int flags,
int x, int y, int len, char *string);
// virtual void MoveChars(int sx, int sy, int dx, int dy, int w, int h);
// virtual void ClearChars(int bg_color, int x, int y, int w, int h);
// virtual void ModeChange(int state);
virtual void Bell();
void RenumberLines(int new_width);
virtual void ResizeTerminal(int w, int h);
// virtual void RequestSizeChange(int w, int h);
void DebugOutputBuffer();
void InsertChar(char c);
void NextLine();
virtual void PassInputToTerminal(int len, char *data);
wxString *get_text();
void ClearScreen();
virtual void SelectPrinter(char *PrinterName);
virtual void PrintChars(int len, char *data);
//TurtleCanvas passes char to here.
void OnChar(wxKeyEvent& event);
void handle_backspace();
void handle_home();
void handle_end();
void handle_clear_to_end();
void handle_history_prev();
void handle_history_next();
void handle_left();
void handle_right();
private:
int MapKeyCode(int keyCode);
void InvertArea(wxDC &dc, int tx1, int tx2, int w, int h, bool scrolled_coord = FALSE);
void MarkSelection(wxDC &dc, bool scrolled_coord = FALSE);
int CheckPlatformKeys(wxKeyEvent& event);
void OnKeyDown(wxKeyEvent& event);
void OnEraseBackground(wxEraseEvent& event);
void OnPaint(wxPaintEvent& event);
void OnDraw(wxDC& dc);
void GetClickCoords(wxMouseEvent& event, int *x, int *y);
void OnLeftDown(wxMouseEvent& event);
void OnLeftUp(wxMouseEvent& event);
void OnMouseMove(wxMouseEvent& event);
void LoseFocus (wxFocusEvent & event);
DECLARE_EVENT_TABLE()
};
enum terminalEvents {
CLEARTEXT = 0,
SETCURSOR
};
void init_Logo_Interpreter (int argc, char ** argv);
#endif /* INCLUDE_WXTERM */
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