File content as of revision 0:863811463610:

/*
Copyright (c) 2012 dansummers

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in 
the Software without restriction, including without limitation the rights to 
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
of the Software, and to permit persons to whom the Software is furnished to do 
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all 
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
SOFTWARE.
 */
#include "ANSITerm.h"
#include "mbed.h"

//Box styles
/* topleft, topright, bottomleft, bottomright, horiz, vert, uptee, downtee, lefttee, righttee,cross */
const char ANSITerm::two_lines[11] = {0xC9,0xBB,0xC8,0xBC,0xCD,0xBA,0xCA,0xCB,0xB9,0xCC,0xCE};
const char ANSITerm::one_line[11] = {0xDA,0xBF,0xC0,0xD9,0xC4,0xB3,0xC1,0xC2,0xB4,0xC3,0xC5};
const char ANSITerm::simple[11] = {'+','+','+','+','-','|','+','+','+','+','+'};

ANSITerm::ANSITerm(PinName tx, PinName rx) : Serial(tx, rx) {current_style = 0;}

/* Device Status Report (Returns CSIn;mR, where n,m is the coordinates of the cursor). */
void ANSITerm::ansi_dsr(int* x_coord, int* y_coord)
{
    char _r; bool reading_x = false; bool reading_y = false;
    this->puts("6n"); wait(0.02);

    /* detect presence of symbol "CMSIS_OS_RTX", and switch on thread safety if we spot it (mutexes, thread.wait instead of wait, etc) */
    /* TODO: Make thread-safe at some point. */
    /*Reply format is "\033[<ycoord>;<xcoord>R" */
    *x_coord = 0; *y_coord = 0;
    while(this->readable() == 1) 
    {
        _r = this->getc();
        switch(_r) {
            case 033:
                //ignore, start of DSR
                break;
            case '[':
                //next char starts the y-coordinate
                reading_y = true;
                break;
            default:
                //this is probably a numeric: check and, if so, subtract 48 to decode the ASCII to int.
                if((_r>47) && (_r<58)) {
                    if(reading_x == true) {
                        *x_coord = ((*x_coord)*10) + (_r-48);
                    } else if(reading_y == true) {
                        *y_coord = ((*y_coord)*10) + (_r-48);
                    }
                } else {
                    /* Not a numeric, ignore it.*/
                }
                break;
            case ';':
                //next char starts the x-coordinate
                reading_y = false; reading_x = true;
                break;
            case 'R':
                //end of ANSI-DSR reply
                return;
        }
    }
}

/* Select Graphic Rendition - Make the output bold, underlined, coloured... all manner of things.*/
void ANSITerm::ansi_sgr(bool reset, char text_style, char text_colour, char background_colour)
{
  bool needs_sep = false;
  if(reset) { this->putc('0'); }
  else
  {
    /* text style (select many) */
    // These two are mutually exclusive
    if((text_style & SGR_BOLD) == SGR_BOLD) { this->putc('1'); }
    else if ((text_style & SGR_FAINT) == SGR_FAINT){ this->putc('2'); }
    else{ this->puts("22"); }
    this->putc(';');
    
    if((text_style & SGR_ITALIC) == SGR_ITALIC) { this->putc('3'); }
    else{ this->puts("23"); }
    this->putc(';');
    
    if((text_style & SGR_UNDERLINE) == SGR_UNDERLINE) { this->putc('4'); }
    else{ this->puts("24"); }
    this->putc(';');
    
    // These two are mutually exclusive
    if((text_style & SGR_BLINK_SLOW) == SGR_BLINK_SLOW) { this->putc('5'); }
    else if ((text_style & SGR_BLINK_RAPID) == SGR_BLINK_RAPID) { this->putc('6'); }
    else{ this->puts("25"); }
    this->putc(';');
    
    if((text_style & SGR_IMAGE_NEGATIVE) == SGR_IMAGE_NEGATIVE) { this->putc('7'); }
    else{ this->puts("27"); }
    this->putc(';');
    
    if((text_style & SGR_CROSSED_OUT) == SGR_CROSSED_OUT) { this->putc('9'); }
    else{ this->puts("29"); }
    needs_sep = true;
    
    /* text colour (select 1) */
    if(text_colour != 0)
    {
      if(needs_sep) { this->putc(';'); }/* Emit a separator if needed. */
      if ((text_colour & SGR_BLACK) == SGR_BLACK) { this->puts("30"); }
      else if((text_colour & SGR_RED) == SGR_RED) { this->puts("31"); }
      else if((text_colour & SGR_GREEN) == SGR_GREEN) { this->puts("32"); }
      else if((text_colour & SGR_YELLOW) == SGR_YELLOW) { this->puts("33"); }
      else if((text_colour & SGR_BLUE) == SGR_BLUE) { this->puts("34"); }
      else if((text_colour & SGR_MAGENTA) == SGR_MAGENTA) { this->puts("35"); }
      else if((text_colour & SGR_CYAN) == SGR_CYAN) { this->puts("36"); }
      else if((text_colour & SGR_WHITE) == SGR_WHITE) { this->puts("37"); }
    }
    /* background_colour (select 1) */
    if(background_colour != 0)
    {
      if(needs_sep) { this->putc(';'); needs_sep = false; }
      if ((background_colour & SGR_BLACK) == SGR_BLACK) { this->puts("40"); }
      else if((background_colour & SGR_RED) == SGR_RED) { this->puts("41"); }
      else if((background_colour & SGR_GREEN) == SGR_GREEN) { this->puts("42"); }
      else if((background_colour & SGR_YELLOW) == SGR_YELLOW) { this->puts("43"); }
      else if((background_colour & SGR_BLUE) == SGR_BLUE) { this->puts("44"); }
      else if((background_colour & SGR_MAGENTA) == SGR_MAGENTA) { this->puts("45"); }
      else if((background_colour & SGR_CYAN) == SGR_CYAN) { this->puts("46"); }
      else if((background_colour & SGR_WHITE) == SGR_WHITE) { this->puts("47"); }
    }
  }
  putc('m');
}

/*
  Draw a box with the specified top-left and bottom-right points (these are the coords of the box, not its contents!)
  Style is an array of chars to use to draw the box, [topleft, topright, bottomleft, bottomright, horiz, vert, uptee, downtee, lefttee, righttee,cross].
  if clear_inner is set, the 'contents' of the box onscreen will be erased.  If it's clear, they won't be.
 */
void ANSITerm::draw_box(int x1, int y1, int x2, int y2, const char* style, bool clear_inner)
{
  this->set_cursor_position(x1,y1);
  //draw the top row
  this->putc(style[0]); for(int i = x1; i<(x2-1);i++) this->putc(style[4]); this->putc(style[1]);
  
  for(int i=(y1+1); i<(y2);i++)
  {
    this->set_cursor_position(x1,i);
    this->putc(style[5]);//draw the left-hand side of this row
    this->set_cursor_position(x2,i);
    this->putc(style[5]);//draw the right-hand side of this row
  }
  
  if(clear_inner)
  {
    for(int i = (y1+1);i<(y2);i++)
    {
      this->set_cursor_position((x1+1),i); //position at the start of this row
      for(int j=x1;j<(x2-1);j++) this->putc(' '); //fill it with spaces
    }
  }
  
  this->set_cursor_position(x1,y2);
  //draw the bottom row
  this->putc(style[2]); for(int i = x1; i<(x2-1);i++) this->putc(style[4]); this->putc(style[3]);
}