TextFile.h

00001 #ifndef TEXTFILE_HPP
00002 #define TEXTFILE_HPP
00003 
00004 #include "mbed.h"
00005 #include "TextLCD.h"
00006 #include "SDFileSystem.h"
00007 #include <stdio.h>
00008 #include <string>
00009 #include <stdlib.h>
00010 #include <vector>
00011 using std::string;
00012 
00013 #include <iostream>
00014 #include <istream>
00015 #include <ostream>
00016 #include <iterator>
00017 #include <sstream>
00018 
00019 
00020 
00021 //vector<string> filenames; //filenames are stored in a vector string
00022 
00023 vector<string> readFileNames(char []);
00024 int getFileNamesWithoutExt(string[], vector<string> &);
00025 string getPreviousLine(istream &);
00026 
00027 
00028 
00029 /******************************************************************************/
00030 /***                           <readFileNames>                              ***/
00031 /******************************************************************************/
00032 // read file names into vector of strings
00033 vector<string> readFileNames(char *dir) {
00034     
00035     vector<string> filenames;
00036     DIR *dp;
00037     struct dirent *dirp;
00038     
00039 
00040     dp = opendir(dir);
00041     
00042     //if no directory was found, don't try and get the fileNames and return an empty vector of 0
00043     if (dp != NULL){
00044 
00045         //read all directory and file names in current directory into filename vector
00046         while((dirp = readdir(dp)) != NULL) {
00047             filenames.push_back(string(dirp->d_name));
00048         }
00049         closedir(dp);
00050     }
00051     return filenames;
00052 }
00053 
00054 
00055 
00056 /******************************************************************************/
00057 /***                      <getFileNamesWithoutExt>                          ***/
00058 /******************************************************************************/
00059  // save filename strings to array from vector using an iterator
00060 int getFileNamesWithoutExt(vector<string> &textFiles, vector<string> filenames) {
00061     
00062     //Cycle through all files listed in the directoy (strings in the vector list)
00063     int n = 0;
00064     for(vector<string>::iterator it=filenames.begin(); it < filenames.end(); it++){
00065         
00066         vector<string> fileName; //filename[0] = filename, filename[1] = extension
00067 
00068         stringstream ss;
00069         ss << (*it);
00070 
00071         //parse the array based on a '.' delimeter, effectively getting the file name and extension
00072         string item;
00073         while (getline(ss, item, '.')) {
00074             fileName.push_back(item);
00075         }
00076 
00077         // if the fileName vector has two items (a name and an extension) and is a .txt file, then save it to the array
00078         if (fileName.size() == 2 && fileName[1].compare("txt") == 0) {  
00079             textFiles.push_back(fileName[0]);
00080             n++;
00081         }    
00082     }
00083     
00084     return n; //Return the number of txt files that were found in the directory   
00085 }
00086 
00087 /******************************************************************************/
00088 /***                              <getNextLine>                             ***/
00089 /******************************************************************************/
00090 //
00091 
00092 int getNextLine(FILE *selectedFile, LineData &lineData) {
00093     
00094     int validLine = 0;
00095     while (!validLine){
00096             
00097         lineData.lineAddress = ftell(selectedFile);
00098         
00099         if (lineData.lineAddress == -1L){
00100             ErrorOut("Unable to get address of line, SD Card Removed?", lineData.lineNumber + 1);
00101             return -1;
00102         }
00103         
00104         //char *newLine;
00105         //getline(selectedFile, newLine);
00106         char newLine[MAX_LINE_LENGTH];
00107         
00108         fgets(newLine, MAX_LINE_LENGTH, selectedFile);
00109         
00110         if (newLine == NULL){
00111             ErrorOut("Unable to get the next line, SD Card Removed?", lineData.lineNumber + 1);
00112             return -1;
00113         }
00114         
00115         lineData.lineNumber++; // new line successfully found, increase lineNumber      
00116         
00117         //pull out each individual word (separated by any white space), and place it in the vector
00118         stringstream newLineStrm(newLine);    
00119         istream_iterator<string> it(newLineStrm);
00120         istream_iterator<string> end;
00121         vector<string> results(it, end);
00122         
00123         //Get the size of the results vector, if it is 0 then while loop will loop again,
00124         //if it has a value, then it will accept the line and end looping cycles
00125         validLine = results.size();
00126     
00127         //copy the vector of results into the array of words
00128         copy(results.begin(), results.end(), lineData.word);
00129         
00130         lineData.numWords = results.size(); //Record the number of words in the line
00131         
00132         results.erase(results.begin(), results.end()); //remove the results vector from memory
00133     }
00134     
00135     //Update the Current Line Number
00136     lcd.setAddress(0,2);
00137     lcd.printf("Current Line#: %d ", lineData.lineNumber);
00138     
00139     //Update the cmd/dvc label for the line so that the user has an idea of what's going on
00140     lcd.setAddress(0,3);
00141     lcd.printf("                    "); // Clear the Line using Spaces (Emptyness) - Note one line is 20 Characters
00142     lcd.setAddress(0,3);
00143     lcd.printf("cmd/dvc: %s", lineData.word[0]);
00144 
00145     /*
00146     lcd.cls(); //clear the display   
00147     lcd.setAddress(0,0);
00148     lcd.printf("wrd1: %s", lineData.word[0]);
00149     lcd.setAddress(0,1);
00150     lcd.printf("wrd2: %s", lineData.word[1]);
00151     lcd.setAddress(0,2);
00152     lcd.printf("wrd3: %s", lineData.word[2]);
00153     lcd.setAddress(0,3);
00154     lcd.printf("wrd4: %s", lineData.word[3]);
00155     wait(1);*/
00156 }
00157 
00158 
00159 #endif 
00160 
00161 
00162 
00163 
00164