static int CheckFile(string path, Pattern pattern, int outputMode = 0)
{
if (File.Exists(path))
{
using (StreamReader reader = File.OpenText(path))
{
string line;
//Compile expression
pattern.CompileExpression();
//Iterate over file
while ((line = reader.ReadLine()) != null)
{
//Print lines with matches
if (pattern.CheckExpression(line) == 0 && outputMode == 0)
{
Console.WriteLine(line);
}
}
}
return(0);
}
else
{
Console.WriteLine("Error: no file in: " + path);
return(1);
}
}
static void Main(string[] args)
{
/*
* Positive assertions Pattern
*/
try
{
Pattern pattern = new Pattern("Hel*o");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hello World") == 0);
Debug.Assert(pattern.CheckExpression("ajaHello World") == 0);
Debug.Assert(pattern.CheckExpression("akalHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdHellobcsdWorld") == 0);
Debug.Assert(pattern.CheckExpression("10Hello5557jjkWorld") == 0);
////Ignore char
pattern = new Pattern("Hellg*o");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hello World") == 0);
Debug.Assert(pattern.CheckExpression("ajaHello World") == 0);
Debug.Assert(pattern.CheckExpression("akalHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdHellobcsdWorld") == 0);
Debug.Assert(pattern.CheckExpression("10Hello5557jjkWorld") == 0);
//Ignore final char
pattern = new Pattern("Hellog*");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hello World") == 0);
Debug.Assert(pattern.CheckExpression("ajaHello World") == 0);
Debug.Assert(pattern.CheckExpression("akalHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdHellobcsdWorld") == 0);
Debug.Assert(pattern.CheckExpression("10Hello5557jjkWorld") == 0);
//Dot tests
pattern = new Pattern("Hel.o");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hello World") == 0);
Debug.Assert(pattern.CheckExpression("ajaHello World") == 0);
Debug.Assert(pattern.CheckExpression("akalHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdHellobcsdWorld") == 0);
Debug.Assert(pattern.CheckExpression("10Hello5557jjkWorld") == 0);
//Alternative tests
pattern = new Pattern("abc|d");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 0);
Debug.Assert(pattern.CheckExpression("abd") == 0);
pattern = new Pattern("..c|d");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 0);
Debug.Assert(pattern.CheckExpression("abd") == 0);
Debug.Assert(pattern.CheckExpression("sxd") == 0);
Debug.Assert(pattern.CheckExpression("sxc") == 0);
////GET ALL TEST. Dot and star eww
////Here start problems.
pattern = new Pattern(".*");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hello World") == 0);
Debug.Assert(pattern.CheckExpression("ajaHello World") == 0);
Debug.Assert(pattern.CheckExpression("akalHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdHellobcsdWorld") == 0);
Debug.Assert(pattern.CheckExpression("10Hello5557jjkWorld") == 0);
Debug.Assert(pattern.CheckExpression("Heggo") == 0);
Debug.Assert(pattern.CheckExpression("Heggo World") == 0);
Debug.Assert(pattern.CheckExpression("HELLO WORLD") == 0);
Debug.Assert(pattern.CheckExpression("ajaHeo World") == 0);
Debug.Assert(pattern.CheckExpression("oll*eH") == 0);
Debug.Assert(pattern.CheckExpression("abcdhellobcsdWorld") == 0);
Debug.Assert(pattern.CheckExpression("10HELLO5557jjkWorld") == 0);
Debug.Assert(pattern.CheckExpression("abcde fghida46575jklmn opqrstuv fd558456xyz") == 0);
////Subexpression tests
pattern = new Pattern("He(llo)*");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hellollo") == 0);
Debug.Assert(pattern.CheckExpression("Hellollollollollollollo") == 0);
Debug.Assert(pattern.CheckExpression("aHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdefghaekepafha;e kfa;eoihf;kldh;dklhfjkahdjkfhkl Hellollollollollollollo") == 0);
Debug.Assert(pattern.CheckExpression("He") == 0);
pattern = new Pattern("He(ll)*o");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Hello") == 0);
Debug.Assert(pattern.CheckExpression("Hellllo") == 0);
Debug.Assert(pattern.CheckExpression("Hellollollollollollollo") == 0);
Debug.Assert(pattern.CheckExpression("aHello") == 0);
Debug.Assert(pattern.CheckExpression("abcdefghaekepafha;e kfa;eoihf;kldh;dklhfjkahdjkfhkl Hellollollollollollollo") == 0);
Debug.Assert(pattern.CheckExpression("Heo") == 0);
pattern = new Pattern("(ab)|(bc)");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("ab") == 0);
Debug.Assert(pattern.CheckExpression("bc") == 0);
Debug.Assert(pattern.CheckExpression("abc") == 0);
pattern = new Pattern("xyz(ab)|(bc)");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("xyzab") == 0);
Debug.Assert(pattern.CheckExpression("xyzbc") == 0);
Debug.Assert(pattern.CheckExpression("xyzabc") == 0);
//Caret
pattern = new Pattern("^abc");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 0);
Debug.Assert(pattern.CheckExpression("abcd") == 0);
Debug.Assert(pattern.CheckExpression("abcDADK") == 0);
Debug.Assert(pattern.CheckExpression("abc754676") == 0);
//bit more complicated
pattern = new Pattern("^abc*");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 0);
Debug.Assert(pattern.CheckExpression("abcc") == 0);
Debug.Assert(pattern.CheckExpression("ab") == 0);
Debug.Assert(pattern.CheckExpression("abfda461e;adfkkjhe5656") == 0);
//Dolar sign
pattern = new Pattern("abc$");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 0);
Debug.Assert(pattern.CheckExpression("afadkfabc") == 0);
Debug.Assert(pattern.CheckExpression("abcabcabcabcabcbbabc") == 0);
Debug.Assert(pattern.CheckExpression("abc") == 0);
Console.WriteLine("Positive Pattern assertions: OK");
}
catch (Exception e)
{
Console.WriteLine("Positive Pattern assertions: ERROR");
Console.WriteLine(e);
}
/*
* Negative assertions Pattern
*/
try
{
Pattern pattern = new Pattern("Hell*o");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Heggo") == 1);
Debug.Assert(pattern.CheckExpression("Heggo World") == 1);
Debug.Assert(pattern.CheckExpression("HELLO WORLD") == 1);
Debug.Assert(pattern.CheckExpression("ajaHeo World") == 1);
Debug.Assert(pattern.CheckExpression("oll*eH") == 1);
Debug.Assert(pattern.CheckExpression("abcdhellobcsdWorld") == 1);
Debug.Assert(pattern.CheckExpression("10HELLO5557jjkWorld") == 1);
// Dot tests
pattern = new Pattern("H.llo");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Heggo") == 1);
Debug.Assert(pattern.CheckExpression("Heggo World") == 1);
Debug.Assert(pattern.CheckExpression("HELLO WORLD") == 1);
Debug.Assert(pattern.CheckExpression("ajaHeo World") == 1);
Debug.Assert(pattern.CheckExpression("oll*eH") == 1);
Debug.Assert(pattern.CheckExpression("abcdhellobcsdWorld") == 1);
Debug.Assert(pattern.CheckExpression("10HELLO5557jjkWorld") == 1);
pattern = new Pattern("a.c");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("ab") == 1);
Debug.Assert(pattern.CheckExpression("abC") == 1);
Debug.Assert(pattern.CheckExpression("bc") == 1);
Debug.Assert(pattern.CheckExpression("BC") == 1);
Debug.Assert(pattern.CheckExpression("abjkhdfklakehifajeuiouaehfhnaehlaem,hfijahfuijukgnhe") == 1);
//Alternation tests
pattern = new Pattern("ab|cd");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("Heggo") == 1);
Debug.Assert(pattern.CheckExpression("abce") == 1);
Debug.Assert(pattern.CheckExpression("ace") == 1);
Debug.Assert(pattern.CheckExpression("ac") == 1);
Debug.Assert(pattern.CheckExpression("ab") == 1);
Debug.Assert(pattern.CheckExpression("abccc") == 1);
Debug.Assert(pattern.CheckExpression("abc") == 1);
// Subexpression tests
pattern = new Pattern("He(llo)*");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("helo") == 1);
Debug.Assert(pattern.CheckExpression("llollollollohe") == 1);
Debug.Assert(pattern.CheckExpression("hello") == 1);
Debug.Assert(pattern.CheckExpression("HElllllllo") == 1);
Debug.Assert(pattern.CheckExpression("eHlllllo") == 1);
Debug.Assert(pattern.CheckExpression("HEloloooooooo") == 1);
pattern = new Pattern("xyz(ab)|(bc)");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("ab") == 1);
Debug.Assert(pattern.CheckExpression("bc") == 1);
Debug.Assert(pattern.CheckExpression("abc") == 1);
pattern = new Pattern("(abd)|(zbc)");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("ab") == 1);
Debug.Assert(pattern.CheckExpression("bc") == 1);
Debug.Assert(pattern.CheckExpression("abc") == 1);
pattern = new Pattern("xyz(ab)|(bc)d");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("xyzab") == 1);
Debug.Assert(pattern.CheckExpression("xyzbc") == 1);
Debug.Assert(pattern.CheckExpression("xyzabc") == 1);
//Caret
pattern = new Pattern("^bc");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 1);
Debug.Assert(pattern.CheckExpression("abcd") == 1);
Debug.Assert(pattern.CheckExpression("abcDADK") == 1);
Debug.Assert(pattern.CheckExpression("abc754676") == 1);
//bit more complicated
pattern = new Pattern("^abc*d");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abc") == 1);
Debug.Assert(pattern.CheckExpression("abcc") == 1);
Debug.Assert(pattern.CheckExpression("ab") == 1);
Debug.Assert(pattern.CheckExpression("abfda461e;adfkkjhe5656") == 1);
//Dolar sign
pattern = new Pattern("abc$");
pattern.CompileExpression();
Debug.Assert(pattern.CheckExpression("abcd") == 1);
Debug.Assert(pattern.CheckExpression("afadkfabca") == 1);
Debug.Assert(pattern.CheckExpression("abcabcabcabcabcbbabcccz") == 1);
Debug.Assert(pattern.CheckExpression("abc3566abc6465465ccbbaaa") == 1);
Console.WriteLine("Negative Pattern assertions: OK");
}
catch (Exception e)
{
Console.WriteLine("Negative Pattern assertions: ERROR");
Console.WriteLine(e);
}
Console.WriteLine("...");
Console.ReadKey();
}
