Guillaume Fricker / Mbed 2 deprecated Menu

4 errors

Dependencies:   KS0108_PCF8574 mbed

menbed/menbedDisplayer.cpp@3:ec80bb6ff5da, 2012-09-11 (annotated)

Committer:
GuiTwo
Date:
Tue Sep 11 10:21:10 2012 +0000
Revision:
3:ec80bb6ff5da
Parent:
0:936f1c020120 
4 errors on vector .cc

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GuiTwo 0:936f1c020120 1 #include "mbed.h"
GuiTwo 0:936f1c020120 2 #include "include/menbedMenuMessage.h"
GuiTwo 0:936f1c020120 3 #include "include/menbedDisplayer.h"
GuiTwo 0:936f1c020120 4
GuiTwo 0:936f1c020120 5 MenbedDisplayer::MenbedDisplayer (MenbedDisplay *display) :
GuiTwo 0:936f1c020120 6 display(display)
GuiTwo 0:936f1c020120 7 {
GuiTwo 0:936f1c020120 8 }
GuiTwo 0:936f1c020120 9
GuiTwo 0:936f1c020120 10
GuiTwo 0:936f1c020120 11 void MenbedDisplayer::update (MenbedMenuMessage *menuMessage)
GuiTwo 0:936f1c020120 12 {
GuiTwo 0:936f1c020120 13 char *text = new char[display->getLineLength()+1];
GuiTwo 0:936f1c020120 14
GuiTwo 0:936f1c020120 15 for (int i=0; i<display->getLines(); i++)
GuiTwo 0:936f1c020120 16 {
GuiTwo 0:936f1c020120 17 extractLine (menuMessage->text, i, text);
GuiTwo 0:936f1c020120 18 display->writeLine (text, i);
GuiTwo 0:936f1c020120 19 }
GuiTwo 0:936f1c020120 20
GuiTwo 0:936f1c020120 21 // Print the up and down arrows if requested
GuiTwo 0:936f1c020120 22 display->showUpArrow (menuMessage->showUpArrow);
GuiTwo 0:936f1c020120 23 display->showDownArrow (menuMessage->showDownArrow);
GuiTwo 0:936f1c020120 24
GuiTwo 0:936f1c020120 25 delete[] text;
GuiTwo 0:936f1c020120 26 }
GuiTwo 0:936f1c020120 27
GuiTwo 0:936f1c020120 28
GuiTwo 0:936f1c020120 29 void MenbedDisplayer::extractLine (char *catenatedText, uint8_t lineNum,
GuiTwo 0:936f1c020120 30 char *extractedText)
GuiTwo 0:936f1c020120 31 {
GuiTwo 0:936f1c020120 32 char *subText, *endText;
GuiTwo 0:936f1c020120 33 size_t bytesToCopy;
GuiTwo 0:936f1c020120 34
GuiTwo 0:936f1c020120 35 extractedText[0] = '\0';
GuiTwo 0:936f1c020120 36
GuiTwo 0:936f1c020120 37 // Return with just a blank line if the line number to be extracted exceeds
GuiTwo 0:936f1c020120 38 // the number of lines in the menu
GuiTwo 0:936f1c020120 39 if (lineNum > display->getLines() - 1)
GuiTwo 0:936f1c020120 40 return;
GuiTwo 0:936f1c020120 41
GuiTwo 0:936f1c020120 42 // We loop through the catenatedString finding each \n. These \n
GuiTwo 0:936f1c020120 43 // characters separate the substrings that we are trying to extract.
GuiTwo 0:936f1c020120 44 subText = catenatedText;
GuiTwo 0:936f1c020120 45 while (lineNum > 0)
GuiTwo 0:936f1c020120 46 {
GuiTwo 0:936f1c020120 47 subText = strchr (subText, '\n');
GuiTwo 0:936f1c020120 48
GuiTwo 0:936f1c020120 49 // If the \n character was not found, the catenatedText string does not
GuiTwo 0:936f1c020120 50 // contain enough \n-separated substrings.
GuiTwo 0:936f1c020120 51 if (subText == (char *)NULL)
GuiTwo 0:936f1c020120 52 {
GuiTwo 0:936f1c020120 53 extractedText[0] = '\0';
GuiTwo 0:936f1c020120 54 return;
GuiTwo 0:936f1c020120 55 }
GuiTwo 0:936f1c020120 56
GuiTwo 0:936f1c020120 57 // Increment the subText pointer because the strchr() command returned
GuiTwo 0:936f1c020120 58 // a pointer to the \n character found, but next time through the loop
GuiTwo 0:936f1c020120 59 // we want to find the next \n, not the same \n again.
GuiTwo 0:936f1c020120 60 subText++;
GuiTwo 0:936f1c020120 61 lineNum--;
GuiTwo 0:936f1c020120 62 }
GuiTwo 0:936f1c020120 63
GuiTwo 0:936f1c020120 64 // If there are strings following the one we are trying to extract, we
GuiTwo 0:936f1c020120 65 // change the \n terminating the string to be extracted into a \0 so that
GuiTwo 0:936f1c020120 66 // we can use the strlen function to determine the length of the string
GuiTwo 0:936f1c020120 67 // we are trying to extract. If there are no additional \n-separated
GuiTwo 0:936f1c020120 68 // strings following the one we are attempting to extract, strlen should
GuiTwo 0:936f1c020120 69 // work on subText without modification.
GuiTwo 0:936f1c020120 70 if ((endText = strchr (subText, '\n')) != (char *)NULL)
GuiTwo 0:936f1c020120 71 bytesToCopy = endText - subText + 1;
GuiTwo 0:936f1c020120 72 else
GuiTwo 0:936f1c020120 73 bytesToCopy = strlen(subText);
GuiTwo 0:936f1c020120 74
GuiTwo 0:936f1c020120 75 // Copy the string found in the \n-separated substring number specified by
GuiTwo 0:936f1c020120 76 // the lineNum parameter to the extracted string.
GuiTwo 0:936f1c020120 77 strncpy (extractedText, subText, bytesToCopy);
GuiTwo 0:936f1c020120 78
GuiTwo 0:936f1c020120 79 // Replace the \n at the end of extractedText string with a \0
GuiTwo 0:936f1c020120 80 extractedText[bytesToCopy-1] = '\0';
GuiTwo 0:936f1c020120 81 }