I would like to directly read a property file into a map.
I found an example such as :
def propsFile = new File(fileName)
props.load(propsFile.newDataInputStream())
props.each { k,v->
println "${k} /// ${v}\n"
}
Ok, it works correctly for line looking like :
toto=titi
i.e. where the key contains no whitespace.
But I have to treat a property file where keys will looks like
This is a key (example)=Value
where This is a key (example) will be the key.
And the example above does not work at all as it gives the first word (This) as the key.
So, is there a way to tell that the key value separator is = and no other character.
If not, il will read line by line and split... but i would prefer a more elegant solution if any.
Thanks for your help
J.L.P.
If your properties file is not following the specification (with escaped spaces in the key names) then you'll have to write your own parser I believe, and go line by line.
Not too hard though, you should be able to use something like:
String props = '''toto = titi
|foo=bar
|# comment
|
|way and hay = yes'''.stripMargin()
Map properties = props.split( '\n' )
.findAll { !it.startsWith( '#' ) && it.trim().length() }
.collectEntries { line ->
line.tokenize( '=' )*.trim()
}
Related
The setup: A UITextField and a Tableview with suggested users
I try to have the following result:
I want users to be able to link other users.
Its working fine as long as I search with my last word in the array
let caption = captionTextView.text
let words = caption?.components(separatedBy: .whitespacesAndNewlines)
guard let searchingWord = words?.last else {return}
if searchingWord.hasPrefix("#") {
self.indicator.startAnimating()
let search = searchingWord.trimmingCharacters(in: CharacterSet.punctuationCharacters).lowercased()
}
But in case a user wants to adjust a username in the middle or at least not at the end of the array, the searching functions doesn't work properly as it still searches with the last word in the array
Example:
"Hey how are you #Lisa #Marcel #Thomas"
In case a user wants to change "#Lisa" to "#Lisbeth" the search function will search with Thomas as its the last word in the array
I wasn't able to get the word I am working at, only last and first words in the array, however I am able to get the current cursor location with
let cursor = captionTextView.cursorOffset!
which is an extension.
So how do I get the word I am working at up until the next "#" to the left und the next blank space to the right? Thanks in advance!
Maybe try something like this:
if let selectedRange = textview.selectedTextRange {
let cursorOffset = textview.offset(from: textview.beginningOfDocument, to: selectedRange.start)
let text = textview.text
let substring = text?.prefix(cursorOffset)
let editedWord = substring?.split(separator: "#")
}
(written on a phone, and untested)
One solution is Regular Expression
let string = "Hey how are you #Lisa #Marcel #Thomas"
let searchingWord = "Lisa"
let replacingWord = "Lisbeth"
let pattern = "#\(searchingWord)\\s"
string.replacingOccurrences(of: pattern, with: "#\(replacingWord) ", options: .regularExpression)
The pattern searches for # followed by the searching word followed by a whitespace character.
Since you say things are working the way you want if the last word is the one that has a username in it you just need to loop over all the words. Depending on your needs you may need to keep track of the usernames that were in the text before to save you from searching for the same user multiple times, but an array of used usernames should sort that for you.
Also, unless you want to prevent users from having underscores and the such in their names you should tweak the way in which you remove the # symbol as well.
guard let words = captionTextView.text?.components(separatedBy: .whitespacesAndNewlines) else { return }
for word in words where word.hasPrefix("#") {
self.indicator.startAnimating()
let search = word.replacingOccurrences(of: "#", with: "").lowercased()
}
Sticking the above code into a playground that uses the sample string you supplied in place of captionTextView.text? and printing search each time yielded…
lisa
marcel
thomas
While trying to make a simple register/signup client only application for a personal project. I'm trying to load a list of users from a file, and compare them to a possible username. If the username already exists, the program will give them an error.
Here is a condensed clone of the code:
u1 = str(input("Input username: "))
t = open("userlistfile","r")
userlist = t.readline()
y = 0
for x in range(0, len(userlist)-1):
if userlist[y] == u1:
print("\n !Error: That username (",u1,") is already taken!")
y += 1
The user list is stored in a file so that it can opened, appended, and saved again, without being stored in the program. My current issue is that the userlist is saved as a string rather than an array. Is there a better way to do this? Thank you.
EDIT: Thanks to user lorenzo for a solution. My Friends are telling me to post a quick (really simple) copy of a for you guys who can't figure it out.
New code:
u1 = str(input("Input username: "))
t = open("userlistfile","r")
userlist = t.read() #Readline() changed to Read()
userlist = userlist.split('--') #This line is added
y = 0
for x in range(0, len(userlist)-1):
if userlist[y] == u1:
print("\n !Error: That username (",u1,") is already taken!")
y += 1
Example text file contents:
smith123--user1234--stacky
This line will seperate the string at the ('--') seperators and append each split part into an array:
userlist = userlist.split('--')
#Is used so that this (in the text file)
Smith123--user1234--stacky
#Becomes (in the program)
userlist = ['Smith123','user1234','stacky']
Sorry for the long post... Found it very interesting. Thanks again to Lorenzo :D.
userlist = t.readline()
reads one line from the file as a string. Iterating, then, gets characters in the string rather than words.
You should be able to get a list of strings (words) from a string with the split() method of strings or the more general re.split() function.
My code has 2 parts. First part is an automatic file opening programmed like this :
fichierref = 'H:\MATLAB\Archive_08112012';
files = dir(fullfile(fichierref, '*.txt'));
numberOfFiles = numel(files);
delimiterIn = ' ';
headerlinesIn = 11;
for d = 1:numberOfFiles
filenames(d) = cellstr(files(d).name);
end
for i=1:numberOfFiles
data = importdata(fullfile(fichierref,filenames{i}),delimiterIn,headerlinesIn);
end
Later on, I want the user to select his files for analysis. There's a problem with this though. I typed the lines as follow :
reference = warndlg('Choose the files from which you want to know the magnetic field');
uiwait(reference);
filenames = uigetfile('./*.txt','MultiSelect', 'on');
numberOfFiles = numel(filenames);
delimiterIn = ' ';
headerlinesIn = 11;
It's giving me the following error, after I press OK on the prompt:
Cell contents reference from a non-cell array object.
Error in FreqVSChampB_no_spec (line 149)
data=importdata(filenames{1},delimiterIn,headerlinesIn);
I didn't get the chance to select any text document. Anyone has an idea why it's doing that?
uigetfile is a bit of an annoying when used with `MultiSelect': when you select multiple files the output is returned as a cell array (of strings). However, when only one file is selected the output is of type string (not a cell array with a single cell, as one would have expected).
So, in order to fix this:
filenames = uigetfile('./*.txt','MultiSelect', 'on');
if ~iscell(filenames) && ischar( a )
filenames = {filenames}; % force it to be a cell array of strings
end
% continue your code here treating filenames as cell array of strings.
EDIT:
As pointed out by #Sam one MUST verify that the user did not press 'cancel' on the UI (by checking that filenames is a string).
I'm trying to find a way to count my columns coming from a Flat File. Actually, all my columns are concatened in a signe cell, sepatared with a '|' ,
after various attempts, it seems that only a script task can handle this.
Does anyone can help me upon that ? I've shamely no experience with script in C# ou VB.
Thanks a lot
Emmanuel
To better understand, below is the output of what I want to achieve to. e.g a single cell containing all headers coming from a FF. The thing is, to get to this result, I appended manually in the previous step ( derived column) all column names each others in order to concatenate them with a '|' separator.
Now , if my FF source layout changes, it won't work anymore, because of this manualy process. So I think I would have to use a script instead which basically returns my number of columns (header ) in a variable and will allow to remove the hard coded part in the derived column transfo for instance
This is an very old thread; however, I just stumbled on a similar problem. A flat file with a number of different record "formats" inside. Many different formats, not in any particular order, meaning you might have 57 fields in one line, then 59 in the next 1000, then 56 in the next 10000, back to 57... well, think you got the idea.
For lack of better ideas, I decided to break that file based on the number of commas in each line, and then import the different record types (now bunched together) using SSIS packages for each type.
So the answer for this question is there, with a bit more code to produce the files.
Hope this helps somebody with the same problem.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace OddFlatFile_Transformation
{
class RedistributeLines
{
/*
* This routine opens a text file and reads it line by line
* for each line the number of "," (commas) is counted
* and then the line is written into a another text file
* based on that number of commas found
* For example if there are 15 commas in a given line
* the line is written to the WhateverFileName_15.Ext
* WhaeverFileName and Ext are the same file name and
* extension from the original file that is being read
* The application tests WhateverFileName_NN.Ext for existance
* and creates the file in case it does not exist yet
* To Better control splited records a sequential identifier,
* based on the number of lines read, is added to the beginning
* of each line written independently of the file and record number
*/
static void Main(string[] args)
{
// get full qualified file name from console
String strFileToRead;
strFileToRead = Console.ReadLine();
// create reader & open file
StreamReader srTextFileReader = new StreamReader(strFileToRead);
string strLineRead = "";
string strFileToWrite = "";
string strLineIdentifier = "";
string strLineToWrite = "";
int intCountLines = 0;
int intCountCommas = 0;
int intDotPosition = 0;
const string strZeroPadding = "00000000";
// Processing begins
Console.WriteLine("Processing begins: " + DateTime.Now);
/* Main Loop */
while (strLineRead != null)
{
// read a line of text count commas and create Linde Identifier
strLineRead = srTextFileReader.ReadLine();
if (strLineRead != null)
{
intCountLines += 1;
strLineIdentifier = strZeroPadding.Substring(0, strZeroPadding.Length - intCountLines.ToString().Length) + intCountLines;
intCountCommas = 0;
foreach (char chrEachPosition in strLineRead)
{
if (chrEachPosition == ',') intCountCommas++;
}
// Based on the number of commas determined above
// the name of the file to be writen to is established
intDotPosition = strFileToRead.IndexOf(".");
strFileToWrite = strFileToRead.Substring (0,intDotPosition) + "_";
if ( intCountCommas < 10)
{
strFileToWrite += "0" + intCountCommas;
}
else
{
strFileToWrite += intCountCommas;
}
strFileToWrite += strFileToRead.Substring(intDotPosition, (strFileToRead.Length - intDotPosition));
// Using the file name established above the line captured
// during the text read phase is written to that file
StreamWriter swTextFileWriter = new StreamWriter(strFileToWrite, true);
strLineToWrite = "[" + strLineIdentifier + "] " + strLineRead;
swTextFileWriter.WriteLine (strLineToWrite);
swTextFileWriter.Close();
Console.WriteLine(strLineIdentifier);
}
}
// close the stream
srTextFileReader.Close();
Console.WriteLine(DateTime.Now);
Console.ReadLine();
}
}
}
Please refer my answers in the following Stack Overflow questions. Those answers might give you an idea of how to load a flat file that contains varying number of columns.
Example in the following question reads a file containing data separated by special character Ç (c-cedilla). In your case, the delimiter is Vertical Bar (|)
UTF-8 flat file import to SQL Server 2008 not recognizing {LF} row delimiter
Example in the following question reads an EDI file that contains different sections with varying number of columns. The package reads the file loads it accordingly with parent-child relationships into an SQL table.
how to load a flat file with header and detail parent child relationship into SQL server
Based on the logic used in those answers, you can also count the number of columns by splitting the rows in the file by the column delimiter (Vertical Bar |).
Hope that helps.
I have a text file (currently in CSV format) as follows:
RACE,"race_human"
GENDER,"male"
AGE,30
ALIGNMENT,"align_lawful_good"
DEITY,"Old Faith"
However, I want to interpret the text file as if it were a list of variables. I.e.:
var RACE:string = "race_human";
Is there an easy way to do this, for instance reformatting the text file in the native language used by the program code?
You could split each line on the comma then place each item into a dictionary (provided the keys are unique). Use Dictionary.TryGetValue if there's a chance that a key does not exist.
string[] input = File.ReadAllLines(CSV-File-Here);
var dict = input.Select(s => s.Split(','))
.ToDictionary(s => s[0], s => s[1]);
// show alignment
string alignment = dict["ALIGNMENT"];
Console.WriteLine(alignment);
// show all values
foreach (var key in dict.Keys)
{
Console.WriteLine("{0}: {1}", key, dict[key]);
}
EDIT: you might be interested in FileHelpers to work with CSV files.