public void replaceText(string messageText)
{
int counter = 1;
string csvFile = "textwords.csv";
string[] words = messageText.Split(' ');
char csvSeparator = ',';
foreach (string word in words)
{
foreach (string line in File.ReadLines(csvFile))
{
foreach (string value in line.Replace("\"", "").Split('\r', '\n', csvSeparator))
if (value.Trim() == word.Trim()) // case sensitive
{
messageText = Regex.Replace(messageText, value, string.Empty);
messageText = messageText.Insert(counter, " " + line);
}
}
counter++;
}
MessageBox.Show(messageText);
}
So I have the above code, it searches my CSV file for a match to every word in the messageText. The CSV file contains textspeak abbreviations and every time it finds a match it is to replace the word in messageText with the word it found. For example "hi LOL" would find "LOL, Laugh out loud" in the CSV and replace it
However this only works for one replacement. If I put in "Hi LOL" it would output "Hi LOL, Laugh out Loud"
But If I put "Hi LOL, how are you? LMAO" it outputs "Hi LOL LMFAO, Laughing my A** off, how are you?"
Can anyone tell me where I'm going wrong, I can't figure out why it is doing this
there are some issues with this method:
1 it takes 2 responsibilities (load key/value pair from csv file and replace text). everytime it's called, the csv file will be loaded.
2 the variable 'counter' looks weird for the purpose of the method.
here is the rewritten code:
static void Main(string[] args) {
var dictionary = LoadFromFile("c:\textWords.csv");
var message = "Hi LOL, LMAO";
message = ReplaceMessage(message, dictionary);
//
}
static Dictionary<String, String> LoadFromFile(String csvFile) {
var dictionary = new Dictionary<String, String>();
var lines = File.ReadAllLines(csvFile);
foreach (var line in lines) {
var fields = line.Split(',', '\r', '\n');
dictionary[fields[0].Trim()] = fields[1].Trim();
}
return dictionary;
}
static String ReplaceMessage(String message, Dictionary<String, String> dictionary) {
var words = message.Split(' ', ',');
var s = new StringBuilder();
foreach (var word in words) {
if (dictionary[word] != null) {
s.Append(String.Format("{0}, {1} ", word, dictionary[word]));
} else {
s.Append(word + " ");
}
}
return s.ToString().TrimEnd(' ');
}
Related
I am currently writing a program that takes in a file, loops through all of the lines.
The file contains a lot of variables + values in this format:
Message =
"alfjawejf1ij4l2jr183fhaalfjawejf1ij4l2jr183fhahalfjawejf1ij4l2jr183fhahalfjawejf1ij4l2jr183fhahalfjawejf1ij4l2jr183fhahh" //the string will encompass multiple
lines of length
Answer = ?
My program will modify the value within message and write it in a new file.
How do I store multiple lines of the value into one string (so I can modify it)?
I need it so that it recognizes "message", starts storing the next few lines, detects "answer" and stops.
For the string holding the message value, I believe some sort of concatenation will be used (concatenating multiple lines).
string[] file = System.IO.File.ReadAllLines(#path); //file is read
string pathNew = Path.GetDirectoryName(path) + "\\completed_" + Path.GetFileName(path);
using (StreamWriter writer = File.CreateText(#pathNew))
{
foreach (string line in file)
{
for (int i = 0; i < line.Length; i++)
{
if (line.Substring(0,6).Equals("Msg = "))
{
foreach (string msg in file)
{
}
}
}
}
}
You could create it pretty easily, if you would provide a method that returns an IEnumerable<string>, and then use the File.WriteAllLines( string, IEnumerable<string> ) utility method
A way you could do it could be
private IEnumerable<string> ReturnAllMessages( IEnumerable<string> lines )
{
bool isMessage = false;
foreach (var line in lines)
{
if (line.StartsWith('Msg ='))
{
isMessage = true;
// set a flag that the next lines are part of the message
// this would exclude the rest of the line from the results
// if you want it, you could use:
// yield return line.Substring('Msg ='.Length));
continue;
}
if (line.StartsWith('Answer ='))
{
// remove the flag
isMessage = false;
continue;
}
if (isMessage)
{
// yield a line that is a message
yield return line;
}
}
}
and then use the method in the following way
File.WriteAllLines( #newPath, ReturnAllMessages( File.ReadAllLines( #path ) ) );
(didn't really test the code though, so just use it as a reference ;) )
One way to do this would be to read all the text as a single string using File.ReadAllText, and then split it on "Message =" to get all the messages, and then split each message on "Answer = " to get the answer for each message (assuming the format is "Message = some message Answer = some answer Message = some other message Answer = some other answer").
It would be helpful if you included an actual sample from the file, since your code clearly was not written for the sample you've provided (there is no line where line.Substring(0,6).Equals("Msg = ") is true).
I've included a method in my sample below that creates a text file with a multi-line message, and then showed how you can read the message into a variable and display it in the console window.
Hope this helps:
private static void CreateFile(string filePath)
{
if (File.Exists(filePath)) File.Delete(filePath);
Directory.CreateDirectory(Path.GetDirectoryName(filePath));
var fileLines = new List<string>
{
"Message = ",
"I weigh nothing, but you can still see me.",
"If you put me in a bucket, I make the bucket lighter.",
"What am I?",
"Answer = A hole",
"Message = ",
"What’s the difference between",
"a hippo and a Zippo?",
"Answer = ",
"A hippo is really heavy, ",
"and a Zippo is a little lighter."
};
File.WriteAllLines(filePath, fileLines);
}
private static void Main()
{
// Set this to a file that doesn't exist or that you don't care about
var filePath = #"f:\private\temp\temp.txt";
// Create a file with multi-line messages
CreateFile(filePath);
// Read all the file text
var fileText = File.ReadAllText(filePath);
// Split it into the message/answers
var messageAnswers = fileText.Split(new[] {"Message ="},
StringSplitOptions.RemoveEmptyEntries);
// Split each message into a message/answer array
foreach (var messageAnswer in messageAnswers)
{
var parts = messageAnswer.Split(new[] {"Answer ="},
StringSplitOptions.RemoveEmptyEntries);
var message = parts[0].Trim();
var answer = parts.Length > 1 ? parts[1].Trim() : "";
Console.WriteLine(message);
var userResponse = Console.ReadLine().Trim();
if (userResponse.Equals(answer, StringComparison.OrdinalIgnoreCase))
{
Console.WriteLine("Correct!");
}
else
{
Console.WriteLine("The actual answer is: " + answer);
}
}
GetKeyFromUser("\nDone! Press any key to exit...");
}
I try to detect quotes in a loaded text file but it is not working. I have tried with '"' and '\"' without success. Any suggestion? thanks
void read()
{
txt = File.ReadAllText("txt/txttst");
for(int i=0;i<txt.Length;i++)
{
if(txt[i]=='"')
{
Debug.Log("Quotes at "+i);
}
}
}
How about this
string[] lines = File.ReadAllLines(#"txt/txttst");
for (int i=0;i<lines.Length;i++)
{
string line = lines[i];
// ASCII Code of Quotes is 34
var bytes = Encoding.UTF8.GetBytes(line.ToCharArray()).ToList();
if(bytes.Count(b=> b.ToString()=="34")>0)
Console.WriteLine("\"" + "at line " + (i + 1));
}
This is how you can do it, please see the code and screenshot below. Hope it helps.
namespace TestConsoleApp
{
class Program
{
static void Main(string[] args)
{
string txt = File.ReadAllText(#"C:\Users\Public\TestFolder\test.txt");
string[] lines = File.ReadAllLines(#"C:\Users\Public\TestFolder\test.txt");
var reg = new Regex("\"");
Console.WriteLine("Contents of test.txt are; ");
foreach (string line in lines)
{
Console.WriteLine(line);
var matches = reg.Matches(line);
foreach (var item in matches)
{
Console.WriteLine("Quotes at "+ ((System.Text.RegularExpressions.Capture)item).Index);
}
}
}
}
}
Ok I found the problem, my text editor did a subtle auto-correct from " to “ . Cheers.
within my Csv File i have a column which holds a string and a datetime type. i would like to separate these data in two columns, one column which holds the string and one which holds the date but converts the datetime type as a string too.
After doing some research i noticed that i could use the string.split function which will add a comma after the three character which are TIP and then push the date in a new column. however i do not know to code this process
class Program
{
static void Main(string[] args)
{
string currentDirectory = Directory.GetCurrentDirectory();
DirectoryInfo directory = new DirectoryInfo(currentDirectory);
var fileName = Path.Combine(directory.FullName, "Climate 02_08_2016.csv");
var fileContents = ReadFile(fileName);
string[] fileLines = fileContents.Split(new char[] { 'r', 'n' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var line in fileLines)
{
Console.WriteLine(line);
}
}
public static string ReadFile(string fileName)
{
var column5 = new List<string>();
using (var reader = new StreamReader(fileName))
{
while (reader.EndOfStream)
{
var splits = reader.ReadLine().Split(';');
column5.Add(splits[4]);
}
return reader.ReadToEnd();
}
}
}
String.Split splits a string into array of strings based on a delimiter specified. MSDN Reference.
You could use String.Replace method to replace space with a comma.
var result = yourStringVar.Replace(' ', ',')
Here is the full code (slightly simplified).
class Program
{
static void Main(string[] args)
{
var filePath = Path.Combine(Directory.GetCurrentDirectory(), "Climate 02_08_2016.csv");
var fileContents = ReadFile(filePath);
foreach (var line in fileContents)
{
Console.WriteLine(line);
}
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
public static IList<string> ReadFile(string fileName)
{
var results = new List<string>();
var lines = File.ReadAllLines(fileName);
for (var i = 0; i < lines.Length; i++)
{
// Skip the line with column names
if (i == 0)
{
continue;
}
// Replace space with a comma
var replace = lines[i].Replace(' ', ',');
results.Add(replace);
}
return results;
}
}
I get following output:
TUI,01/01/20
Press any key to exit...
Please let me know if this is enough for you to implement your own solution.
This is a program that reads in a CSV file, adds the values to a dictionary class and then analyses a string in a textbox to see if any of the words match the dictionary entry. It will replace abbreviations (LOL, ROFL etc) into their real words. It matches strings by splitting the inputted text into individual words.
public void btnanalyze_Click(object sender, EventArgs e)
{
var abbrev = new Dictionary<string, string>();
using (StreamReader reader = new StreamReader("C:/Users/Jordan Moffat/Desktop/coursework/textwords0.csv"))
{
string line;
string[] row;
while ((line = reader.ReadLine()) != null)
{
row = line.Split(',');
abbrev.Add(row[0], row[1]);
Console.WriteLine(abbrev);
}
}
string twitterinput;
twitterinput = "";
// string output;
twitterinput = txtInput.Text;
char[] delimiterChars = { ' ', ',', '.', ':', '\t' };
string text = twitterinput;
string[] words = twitterinput.Split(delimiterChars);
string merge;
foreach (string s in words)
{
if (abbrev.ContainsKey(s))
{
string value = abbrev[s];
merge = string.Join(" ", value);
}
if (!abbrev.ContainsKey(s))
{
string not = s;
merge = string.Join(" ", not);
}
MessageBox.Show(merge);
}
}
The problem is that the program won't translate the word if there's punctuation. I realised the character set I was using meant that punctuation wasn't a problem, but also didn't allow me to retain it when printing out. Is there a way that I can ignore the last character, as opposed to removing it, and still retain it for the output? I was trying to write it into a new variable, but I can't find a way to do that either...
That seems overly complicated. You can do the same thing with regular expressions and backreferences.
foreach(var line in yourReader)
{
var dict = new Dictionary<string,string>(); // your replacement dictionaries
foreach(var kvp in dict)
{
System.Text.RegularExpressions.Regex.Replace(line,"(\s|,|\.|:|\\t)" + kvp.Key + "(\s|,|\.|:|\\t)","\0" + kvp.Value + "\1");
}
}
I hacked this regex together so it may not be right, but it's the basic idea.
This is whats going on. I have a huge text file that is suppose to be 1 line per entry. The issue is sometimes the line is broken with a new line.
I edit this entire file and wherever the file doesn't begin with ("\"A) i need to append the current line to the previous line ( replacing \n with " "). Everything I come up with keeps appending the line to a new line. Any help is appricated...
CODE:
public void step1a()
{
string begins = ("\"A");
string betaFilePath = #"C:\ext.txt";
string[] lines = File.ReadAllLines(betaFilePath);
foreach (string line in lines)
{
if (line.StartsWith(begins))
{
File.AppendAllText(#"C:\xt2.txt",line);
File.AppendAllText(#"C:\xt2.txt", "\n");
}
else
{
string line2 = line.Replace(Environment.NewLine, " ");
File.AppendAllText(#"C:\xt2.txt",line2);
}
}
}
Example:
Orig:
"\"A"Hero|apple|orange|for the fun of this
"\"A"Hero|apple|mango|lots of fun always
"\"A"Her|apple|fruit|no
pain is the way
"\"A"Hero|love|stackoverflowpeople|more fun
Resulting:
"\"A"Hero|apple|orange|for the fun of this
"\"A"Hero|apple|mango|lots of fun always
"\"A"Her|apple|fruit|no pain is the way
"\"A"Hero|love|stackoverflowpeople|more fun
my problem isnt the finding the if (line.StartsWith(begins)) its the else statement, it appends line2 to a new line
it seems like your string is not well formated...
try this "\"\\\"A\"" instead
public void step1a()
{
string begins = ("\"\\\"A\"");
string betaFilePath = #"C:\ext.txt";
string[] lines = File.ReadAllLines(betaFilePath);
foreach (string line in lines)
{
if (line.StartsWith(begins))
{
File.AppendAllText(#"C:\xt2.txt",line);
File.AppendAllText(#"C:\xt2.txt", "\n");
}
else
{
string line2 = line.Replace(Environment.NewLine, " ");
File.AppendAllText(#"C:\xt2.txt",line2);
}
}
}
This does what you want:
CopyFileRemovingStrayNewlines(#"C:\ext.txt", #"C:\xt2.txt", #"""\""A");
With this method:
public static void CopyFileRemovingStrayNewlines(string sourcePath, string destinationPath, string linePrefix)
{
string[] lines = File.ReadAllLines(sourcePath);
bool firstLine = true;
foreach (string line in lines)
{
if (line.StartsWith(linePrefix))
{
if (!firstLine)
File.AppendAllText(destinationPath, Environment.NewLine);
else
firstLine = false;
File.AppendAllText(destinationPath, line);
}
else
{
File.AppendAllText(destinationPath, " ");
File.AppendAllText(destinationPath, line);
}
}
}
It does have the problem of appending to an existing file, though. I suggest using a StreamWriter rather than AppendAllText. Like this:
public static void CopyFileRemovingStrayNewlines(string sourcePath, string destinationPath, string linePrefix)
{
string[] lines = File.ReadAllLines(sourcePath);
bool firstLine = true;
using (StreamWriter writer = new StreamWriter(destinationPath, false))
{
foreach (string line in lines)
{
if (line.StartsWith(linePrefix))
{
if (!firstLine)
writer.WriteLine();
else
firstLine = false;
writer.Write(line);
}
else
{
writer.Write(" ");
writer.Write(line);
}
}
}
}
Your problem is that the \ is a C# escape code.
Your string is parsed as "A, because \" is the escape code for a single ".
You should make the begins string an #-string, which does not use escape codes.
You will then need to escape the " by doubling it up.
For example:
const string begins = #"\""A";
Note that the best way to do this is to use a StreamWriter, like this:
using(StreamWriter writer = File.Create(#"C:\xt2.txt"))
{
foreach (string line in lines)
{
if (line.StartsWith(begins))
writer.WriteLine(); //Close the previous line
writer.Write(line);
}
}
Based on #SLaks's example here is some code that should do the trick:
public static void step1a()
{
string betaFilePath = #"C:\ext.txt";
string[] lines = File.ReadAllLines(betaFilePath);
using (StreamWriter writer = new StreamWriter(File.Create(#"C:\xt2.txt")))
{
string buffer = null;
foreach (string line in lines)
{
if (!line.StartsWith(begins))
{
writer.WriteLine(buffer + line);
buffer = null;
}
else
{
if (buffer != null)
writer.WriteLine(buffer);
buffer = line;
}
}
if(buffer != null)
Console.Out.WriteLine(buffer);
}
}