Binary search in text files

Hi all,
I'm thinking about how to implement a binary sort to get,given a key, a value from a text file with a list of words in order. I saw randomaccessfile for j2se and I know that this work it's usually done by seek functions but how to do the seek work without the File class , with only the InputStream and Reader? I'm talking about the j2me midp 2 cldc 1.1 api, is there some methods or class to use for this thing? How could be implemented a binary search in a text file resident in the /res dir or the JAR or which could be the problems that cannot make possible this staff? If there was something like seek one way could be that one of decide a common length of words to read so going to the half of the text file it's possible with simply multiplication, and the do the binary search things.But for now I haven't found any resources or help.
I hope you can help me to understand, thank you

Hallo all,
it is NOT the problem to locate the text I need to find in the fmb, or fmx.
The problem is that since I want to change not only the text but also some more code around I want to do this in Form Builder - Object Navigator. And I'm not able to discover in which trigger or procedure the text appears.
I do not want to edit fmx, or fmb in a text editor because I suupose theer are some checksums hidden for the format.
-duro
BTW in FMT there is no code seen (only some binary) for v6i as it was in v4.5.

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Is there a function to Search a Text File?

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int lineNumber = 0;
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I have done something similar to to this, but it depends on what you want to use it for. I was looking for specific data on websites and would copy that data into a database. So, I used regex to find the data on the site and copy it. I also had to use String Tokenizer in certain places to get the correct data sometimes.
orozcom

Searching a text file and printing the line if found!

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public void printCourses() throws Exception
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Search the text file using vbscript.

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ok my solution is below,
CONST ForReading = 1
Dim File1
Dim FileToRead
Dim strLine
Dim infoResult
Dim strDir, objFile, returnvalue
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Set objFile = objFSO.OpenTextFile(FileToRead, ForReading)
Do Until objFile.AtEndOfStream
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Binary V/s Text files.

What is the difference between binary and text files?
Thank you for your reply.

What is the difference between binary and text files?
Thank you for your reply.They're both just files of (binary) data. The real difference is just in the way that they are read/written. Text files are 'line-delimited', having a sequence of cr/lf combinations (depending on platform) to separate 'lines' of 'text'.

Searching into text files

Hi friends!
I'm working with Oracle8i and using ConText Cartridge to make
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This field has type VARCHAR(128). I don't know how to make
searches in this field. Can anybody help me, please?
Thank you all in Advance
Carlos Moreno

Hi friends!
I'm working with Oracle8i and using ConText Cartridge to make
searches in some fields of a table. The problem is that this
table has a field to store a file name that contains large text.
This field has type VARCHAR(128). I don't know how to make
searches in this field. Can anybody help me, please?
Thank you all in Advance
Carlos Moreno

Problem using a vector of strings as patterns to search a text file

Ideas? Goal is to use several patterns from one file to search for matches in a second file, one pattern at a time. I have added the file of patterns to a vector and created an iterator to grab each pattern successively. I also can effectively search for matches in the second file, but can't seem to find a way to combine them. I've tried nested while(s) in both orders without success.
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It sounds to me like it should work. What does your search code look like?

Which app to read and search a text file?

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javascript:void%28s%3Dprompt%28%27Find%20text%3A%27%2C%27%27%29%29%3Bs%3D%27%28% 27s+%27%29%27%3Bx%3Dnew%20RegExp%28s%2C%27gi%27%29%3Brn%3DMath.floor%28Math.random %28%29*100%29%3Brid%3D%27z%27%20+%20rn%3Bb%20%3D%20document.body.innerHTML%3Bb%3 Db.replace%28x%2C%27%3Cspan%20name%3D%27%20+%20rid%20+%20%27%20id%3D%27%20+%20ri d%20+%20%27%20style%3D%5C%27color%3A%23000%3Bbackground-color%3Ayellow%3B%20font -weight%3Abold%3B%5C%27%3E%241%3C/span%3E%27%29%3Bvoid%28document.body.innerHTML %3Db%29%3Balert%28%27Found%20%27%20+%20document.getElementsByName%28rid%29.lengt h%20%20%27%20matches.%27%29%3Bwindow.scrollTo%280%2Cdocument.getElementsByName%28rid %29%5B0%5D.offsetTop%29%3B
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Searching through text file

Hi guys,
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Say your paragraphs are seperated by a empty line (\n)
import java.io.*;
public class New{
public static void main(String args[]){
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public String[] getParagraphs(String after, String fileName) throws Exception{
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}Edited by: gtRpr on 2008/06/26 01:36

Binary transfer of text files

I'm trying to do this - edited FTPExtensionMap.txt
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Thanks

Guess I should have scrolled down to the app dev forum before
posting - found my answer - there's two places that file resides
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Thanks...

Search word in text file

Hello,
someone can help me with code?
How to search in text file any word and count how many it were repeated?
For example test.txt:
hi
hola
hey
hi
bye
hoola
hiAnd if I want to know how many times are repeated in test.txt word "Hi" program must say "3 times repeated"
I hope you understood what I want, thank you for answers.

This is my code now.
package lt.kvk.i3_2.test;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
public class Testing {
          public static void main(String args[]) throws Exception {
               Scanner input = new Scanner(System.in);
            System.out.println("Select word from list:");
            System.out.println();
            try {
                    FileReader fr = new FileReader("src/lt/kvk/i3_2/test/List.txt"); // this is list of words, everything all right here
                    BufferedReader br = new BufferedReader(fr);
                    String s;
                    while((s = br.readLine()) != null) {
                         System.out.println(s);
                    fr.close();
                    String stilius = input.nextLine();   // eneter word which I want to count in File.txt
                BufferedReader bf = new BufferedReader(new FileReader("src/lt/kvk/i3_2/test/File.txt")); // from this file I need to count word which I entered before
                int counter = 0;
                counter = counter + 1;
                counter++;
                counter += 1;
                String line;
                System.out.println("Looking for information");
                while (( line = bf.readLine()) != null){
                int indexfound = line.indexOf(stilius);
                if (indexfound > -1) {
                System.out.println( "At all words which You want to count are "+ counter);
                bf.close();
            catch (IOException e) {
                System.out.println("Error");
          }         Here example of file.txt:
test
tea
tree
test
car
wind
dog
test
car
sea
tea
testIf I enter for example word "test" or any from this list I got answer:
Looking for information
At all words which You want to count are 3But it must to count how many times in this file this word are repeated, it must be 4
if I enter word car It must show 2....
And if I enter word which isn't in list (file.txt)
Program didn't show error, just:
Looking for informationThanks for answers.

Compare two text files in Powershell and if a name is found in both files output content from file 2 to a 3rd text file

Is it possible using PowerShell to compare the contents of two text files line by line and if a line is found output that line to a third text file?
Lets say hypothetically someone asks us to search a text file named names1.txt and when a name is found in names1.txt we then pair that with the same name in the second text file called names2.txt
lets say the names shown below are in names1.txt
Bob
Mike
George
Lets say the names and contents shown below are in names2.txt
Lisa
Jordan
Mike 1112222
Bob 8675309
Don
Joe
Lets say we want names3.txt to contain the data shown below
Mike 1112222
Bob 8675309
In vbscript I used search and replace commands to get part of the way there like this
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("testing.txt", ForReading)
strText = objFile.ReadAll
objFile.Close
strNewText = Replace(strText, "Mike ", "Mike 1112222")
Set objFile = objFSO.OpenTextFile("testing.txt", ForWriting)
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objFile.Close
That script works great when you know the name you are looking for and the correct values. Lets say someone gives you a list of 1000 employees and says import these names into a list in the correct format and one sheet has the correct names only and
the other sheet has lots of extra names say 200000 and you only need the 1000 you are looking for in the format from names2.txt.

Sure,
Here's a simple one:
$names1 = "C:\names1.txt"
$names2 = "C:\names2.txt"
$names3 = "C:\names3.txt"
Get-Content $names1 | ForEach-Object {
$names1_Line = $_
Get-Content $names2 | Where-Object {$_.Contains($names1_Line)} | Out-File -FilePath $names3 -Append
This basically just reads $names1 file, line by line, and then read $names2 file line by line as well.
If the line being evaluated from $names2 file contains the line being evaluated from $names1 file, then the line from $names2 file gets output to $names3 file, appending to what's already there.
This might need a few more tinkering to get it to perform faster etc depending on your requirements. For example:
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line in $names1 (which is how it is currently works)
- Make sure that your comparison is behaving as expected. The .Contains method always does a case sensitive comparison, this might not be what you are after.
- You might want to put a condition to ignore blank lines or lines with spaces, else they'll also be brought over to $names3
Hopefully this will get you started though and ask if you have further questions.
Fausto

How to generate complete file list of hard drive and output to text file

I need to start backing things up to drives, which over time will be put in storage.
I would like to be able to create a complete file index and folder tree of every drive and have it output to a text file so that in the event I ever need to go back to a drive, I can search the text file to know what drive to pull from storage (rather than using spotlight to search through 25 drives).
Is there any way to do this with either OS X or with a third party software? Ideally, text file and not PDF.
Thanks!

You can use the terminal.app with the following command:
rsync -rlptn --stats --progress +Source.. Destination..+
example with actual output:
rsync -rlptn --stats --progress /Volumes/Mac\ Data/websites /Volumes/EXT\ SATA2building file list ...
146 files to consider
websites/
websites/.DS_Store
websites/bestelectricbill.com/
websites/bestelectricbill.com/.DS_Store
websites/bestelectricbill.com/211299c1
websites/bestelectricbill.com/awards.php
websites/bestelectricbill.com/careers.php
websites/bestelectricbill.com/category1.php
websites/bestelectricbill.com/category2.php
websites/bestelectricbill.com/category3.php
websites/bestelectricbill.com/checkout.php
websites/bestelectricbill.com/company.php
websites/bestelectricbill.com/contactus.php
websites/bestelectricbill.com/email.js
websites/bestelectricbill.com/faqs.php
websites/bestelectricbill.com/fsp.js
websites/bestelectricbill.com/history.php
websites/bestelectricbill.com/index.php
websites/bestelectricbill.com/index_copy.php
websites/bestelectricbill.com/investors.php
websites/bestelectricbill.com/job1.php
websites/bestelectricbill.com/job2.php
websites/bestelectricbill.com/job3.php
websites/bestelectricbill.com/job4.php
websites/bestelectricbill.com/job5.php
websites/bestelectricbill.com/managementteam.php
websites/bestelectricbill.com/news1.php
websites/bestelectricbill.com/news2.php
websites/bestelectricbill.com/news3.php
websites/bestelectricbill.com/news4.php
websites/bestelectricbill.com/news5.php
websites/bestelectricbill.com/newsandevents.php
websites/bestelectricbill.com/partners.php
websites/bestelectricbill.com/press.php
websites/bestelectricbill.com/privacypolicy.php
websites/bestelectricbill.com/product1a.php
websites/bestelectricbill.com/product1a1.php
websites/bestelectricbill.com/product1a2.php
websites/bestelectricbill.com/product1b.php
websites/bestelectricbill.com/product1b1.php
websites/bestelectricbill.com/product1b2.php
websites/bestelectricbill.com/product1c.php
websites/bestelectricbill.com/product1c1.php
websites/bestelectricbill.com/product1c2.php
websites/bestelectricbill.com/product1d.php
websites/bestelectricbill.com/product1d1.php
websites/bestelectricbill.com/product1d2.php
websites/bestelectricbill.com/product1e.php
websites/bestelectricbill.com/product1e1.php
websites/bestelectricbill.com/product1e2.php
websites/bestelectricbill.com/products.php
websites/bestelectricbill.com/productsearch.php
websites/bestelectricbill.com/registration.php
websites/bestelectricbill.com/search.php
websites/bestelectricbill.com/searchresults.php
websites/bestelectricbill.com/service1.php
websites/bestelectricbill.com/service1a.php
websites/bestelectricbill.com/service1a1.php
websites/bestelectricbill.com/service1a2.php
websites/bestelectricbill.com/service1b.php
websites/bestelectricbill.com/service1b1.php
websites/bestelectricbill.com/service1b2.php
websites/bestelectricbill.com/service1c.php
websites/bestelectricbill.com/service1c1.php
websites/bestelectricbill.com/service1c2.php
websites/bestelectricbill.com/service1d.php
websites/bestelectricbill.com/service1d1.php
websites/bestelectricbill.com/service1d2.php
websites/bestelectricbill.com/service1e.php
websites/bestelectricbill.com/service1e1.php
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websites/bestelectricbill.com/services.php
websites/bestelectricbill.com/shoppingcart.php
websites/bestelectricbill.com/sitemap.php
websites/bestelectricbill.com/story1.php
websites/bestelectricbill.com/story2.php
websites/bestelectricbill.com/story3.php
websites/bestelectricbill.com/termsofuse.php
websites/bestelectricbill.com/Templates/
websites/bestelectricbill.com/Templates/siteassist_config.cfg
websites/bestelectricbill.com/Templates/siteassist_template.dwt.php
websites/bestelectricbill.com/Templates/_notes/
websites/bestelectricbill.com/Templates/_notes/dwsync.xml
websites/bestelectricbill.com/_notes/
websites/bestelectricbill.com/_notes/dwsync.xml
websites/bestelectricbill.com/images/
websites/bestelectricbill.com/images/.DS_Store
websites/bestelectricbill.com/images/app_img17.jpg
websites/bestelectricbill.com/images/bestelectriclogo.jpg
websites/bestelectricbill.com/images/bestelectriclogo.jpg.ori.jpg
websites/bestelectricbill.com/images/btn_saveBusiness.jpg
websites/bestelectricbill.com/images/btn_saveHome.jpg
websites/bestelectricbill.com/images/imgAbout_OverviewTeam copy.jpg
websites/bestelectricbill.com/images/imgCollage.jpg
websites/bestelectricbill.com/images/imgComp1.jpg
websites/bestelectricbill.com/images/imgComp3.jpg
websites/bestelectricbill.com/images/imgComp4.jpg
websites/bestelectricbill.com/images/imgComp5.jpg
websites/bestelectricbill.com/images/imgComp6.jpg
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websites/bestelectricbill.com/images/imgComp8.jpg
websites/bestelectricbill.com/images/phone number.jpg
websites/bestelectricbill.com/images/phone number2.jpg
websites/bestelectricbill.com/images/_notes/
websites/bestelectricbill.com/images/_notes/dwsync.xml
websites/bestelectricbill.com/siteassist_css/
websites/bestelectricbill.com/siteassist_css/color.css
websites/bestelectricbill.com/siteassistcss/mystyles.css
websites/bestelectricbill.com/siteassist_css/navigation.css
websites/bestelectricbill.com/siteassistcss/navigationcolor.css
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websites/bestelectricbill.com/siteassistimages/above_topnavbackground.jpg
websites/bestelectricbill.com/siteassistimages/below_topnavbackground.jpg
websites/bestelectricbill.com/siteassist_images/border.gif
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websites/bestelectricbill.com/siteassist_images/bubbles.jpg
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websites/bestelectricbill.com/siteassistimages/sidenavbackground.jpg
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websites/bestelectricbill.com/siteassistimages/topbackground.jpg
websites/bestelectricbill.com/siteassistimages/topnavbackground.jpg
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websites/bestelectricbill.com/siteassistimages/trcorner.jpg
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websites/bestelectricbill.com/siteassistimages/notes/dwsync.xml
Number of files: 146
Number of files transferred: 135
Total file size: 1150921 bytes
Total transferred file size: 1150921 bytes
Literal data: 0 bytes
Matched data: 0 bytes
File list size: 2825
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 3717
Total bytes received: 896
sent 3717 bytes received 896 bytes 9226.00 bytes/sec
total size is 1150921 speedup is 249.50
Simply copy and and paste output text in terminal to a text file.
What I actually did there was use the "dry run option" (-n) - no files were actually transferred.
For more info on the rsync command type and run "man rsync" at the terminal command line.
Also see this webpage:
http://www.ss64.com/osx/rsync.html
Kj

Text file problem

I wanna search a text file, and get the database name from it. The database name usually follows "BATCH". How can I do that. Thanks.

Actually, the text file is weblogic server's properties file. We stored the database information as one property in that file. Thus you can see, the file is pretty chunky, I don't know if I should read the file line by line, or if there is any easy way to search the file for the occurance of "DBNAME".
Following is just a small part of the property file:
# SYSTEM PROPERTIES
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MYDB01 is exactly what I want to get from the file.

How to save data results into text file

I want to solve an equation of degree 2 for example, and results are displayed in a text file

Like many other software coding forums, we don't want to give hand outs. We are more than happy to give hand ups. Show that you've tried to figure out the problem and show us where you are stuck. Then we will be glad to help you get you unstuck. If we just give you an answer, you will learn nothing.
As far as writing to a text file, look in the File I/O palette for the Write to Text File primitive. Also, if you go to Help->Find Examples... and do a search for "text file" you will get some examples of how to use it.
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Binary search in text files

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