comparing two text files

timer Asked: Mar 9th, 2016

Question description

I have written the function to compare two text files as shown below

function [testStatus, testMessage] = compare2TxtFiles(File1, File2)


%   This functions compares two text file



% File1         - Name of the reference text file

% File2         - Name of the text file to be compared with the reference text file



% testMessage       - Prints unmatched results of the comparison

% testStatus        - Returns logical 1 if files matches and logical 0 otherwise

% Initialize outputs

testStatus = 1;

testMessage = {};

% Open, read each line (row) and close the first text file

% Opens the first (reference) text file File1 for reading

FID = fopen(File1, 'r'); 

% Reads File1 data into a cell array Data

Data = textscan(FID, '%s', 'delimiter', '\n', 'whitespace', '');  

% Returns the first line of cell array of strings Data to lines1

lines1 = Data{1};  

% Close the opened first file


% Open, read each line (row) and close the second text file

FID = fopen(File2, 'r');

Data = textscan(FID, '%s', 'delimiter', '\n', 'whitespace', '');

lines2 = Data{1};


% Get the number of elements in cellOneData1 and cellOneData2

% Number of elements in array lines1

numElOfLines1 = numel(lines1);

% Number of elements in array lines2

numElOfLines2 = numel(lines2);                              

% Compare the content the cell arrays lines1 and lines2

for i=1:numElOfLines1

    % If number of lines in lines1 are less than that of lines2

    if i <= numElOfLines2

        if strcmp(lines1{i},lines2{i})== 1



            testStatus = 0;

            outText = ['Line ' num2str(i) ':' ' ' lines1{i} ' Is different from: ' lines2{i}];

            testMessage{end+1} = sprintf(outText);



        % If number of lines in lines1 are more than that of lines2

        if i > numElOfLines2                    

            testStatus = 0;

            outText = 'Not Necessary to Compare the Files';

            testMessage{end+1} = sprintf(outText);





But when i run the code, I do not get the expected results. The problem is that when I run the test, I get "Not Necessary to compare files" printed in the results of all the test cases.

Please can someone identify why i am having this problem and solve it?

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