Kannaiyan's Code for the Day

Google AppScript URLFetch and Spreasheet Example to Extract Information

2011-05-16T10:27:00.000-07:00

Code which pulled all information through urlfetch and load it to spreadsheet.
Simple and cute.



function AddViewCount()
{
  var sheet = SpreadsheetApp.getActiveSheet();
  var prevcount = sheet.getRange(2, 8).getValue();
  prevcount = prevcount + 1;
  sheet.getRange(2, 8).setValue(prevcount);
  SpreadsheetApp.flush();
}

function CollectAllElectionDetails() {
  var sheet = SpreadsheetApp.getActiveSheet();  
  var consttotalcount = 234;
  var rowcount = 1;
  for(var constcount = 1; constcount <= consttotalcount; constcount++)
  {
  var response = UrlFetchApp.fetch("http://eciresults.nic.in/ConstituencywiseS22" + constcount + ".htm");
  var xmldoc = Xml.parse(response.getContentText(), true);
  var root = xmldoc.getElement(); 
  var child1 = root.getElements();
  var bodychilds = child1[1].getElements();
  var bodychilds1 = bodychilds[0].getElements(); 
  var bodychilds11 = bodychilds1[1].getElements();
  var bodychilds111 = bodychilds11[0].getElements();  
  var contestants = bodychilds111[4].getElements();
  var contestantdetails = contestants[0].getElements();
  var call1 = contestantdetails[3].getElements();
  var call11 = call1[1].getElements();
  var call111 = call11[0].getElements("table");
  var cleardetails = Xml.parse(call111[0].toXmlString(), false);
  var rowinfo =  cleardetails.table.tr.td.div.getElements()
  var rowinfo1 =  rowinfo[0].getElements("tr");   
  var constname = rowinfo1[0].td.getText().replace("Tamil Nadu - ","");
  var totalcandidates = rowinfo1.length - 3;
  for(var count=0; count < totalcandidates; count++ )
  {
    var candiname = rowinfo1[count+3].td[0].getText();
    var partyname = rowinfo1[count+3].td[1].getText();
    var totalvotes = rowinfo1[count+3].td[2].getText();
    sheet.getRange(rowcount+1, 1).setValue(constcount);
    sheet.getRange(rowcount+1, 2).setValue(constname);
    sheet.getRange(rowcount+1, 3).setValue(candiname);
    sheet.getRange(rowcount+1, 4).setValue(partyname);
    sheet.getRange(rowcount+1, 5).setValue(totalvotes);
    rowcount++;
  }
} 

}

TIFFtoPDF conversion - Image Bitmap File Lock Problem - Resolved

2011-05-09T10:08:00.000-07:00



   string[] files = Directory.GetFiles(faxpath, "*.tif");
            foreach (string infilename in files)
            {
                PdfDocument document = new PdfDocument();                
                StreamReader imgstreamer = new StreamReader(infilename);                
                Bitmap bm = new Bitmap(imgstreamer.BaseStream);
                int total = bm.GetFrameCount(FrameDimension.Page);                
                _logger.Log("TIFtoPDFConversion", LogEntryType.Debug, "Converting TIF File: " + infilename);
                for (Int32 k = 0; k < total; k++)
                {
                    Bitmap bm2 = new Bitmap(infilename);
                    bm2.SelectActiveFrame(FrameDimension.Page, k);
                    XImage image = XImage.FromGdiPlusImage(bm2);
                    PdfPage page1 = document.AddPage();

                    // Get Image width, Height and Resolution and Set output document Width and Height in Inches
                    page1.Width = XUnit.FromInch(image.PixelWidth / image.HorizontalResolution);
                    page1.Height = XUnit.FromInch(image.PixelHeight / image.VerticalResolution);
                    XGraphics gfx = XGraphics.FromPdfPage(page1, XGraphicsPdfPageOptions.Append);
                    gfx.DrawImage(image, 0, 0);
                    gfx.Dispose();
                    image.Dispose();
                    page1.Close();
                    bm2.Dispose();
                }
                string pdffilename = infilename.Substring(0, infilename.ToLower().LastIndexOf(".tif") - 1) + ".pdf";
                _logger.Log("TIFtoPDFConversion", LogEntryType.Debug, "Completed Converting TIF File: " + infilename);
                // Save the PDF
                document.Save(pdffilename);
                imgstreamer.Close();
            }

So Simple as that. Add pdfsharp in the reference nothing else to install.
Pdfsharp can be obtained from PDFSharp.

Call a WCF Service from Linux Nusoap

2011-05-06T09:27:00.001-07:00



include('lib/nusoap.php');

$client = new nusoap_client('http://url.svc?wsdl', 'wsdl',
                $proxyhost, $proxyport, $proxyusername, $proxypassword);
$err = $client->getError();
if ($err) {
echo "Constructor error";
exit;
}
$client->soap_defencoding = 'UTF-8';
$result = $client->call('DoWork');
echo $result['DoWorkResult'];
//echo $client->debug_str;
echo "\n";

TIFF to PDF Conversion using .Net - Free

2011-04-20T12:42:00.000-07:00



            string infilename = "c:\\temp\\faxsample.tif";
            PdfDocument document = new PdfDocument();
            Bitmap bm = new Bitmap(infilename);
            int total = bm.GetFrameCount(FrameDimension.Page);
            for (Int32 k = 0; k < total; k++)
            {
                Bitmap bm2 = new Bitmap(infilename);
                bm2.SelectActiveFrame(FrameDimension.Page, k);
                XImage image = XImage.FromGdiPlusImage(bm2);
                PdfPage page1 = document.AddPage();
                
                // Get Image width, Height and Resolution and Set output document Width and Height in Inches
                page1.Width = XUnit.FromInch(image.Width / image.HorizontalResolution);
                page1.Height = XUnit.FromInch(image.Height / image.VerticalResolution);
                XGraphics gfx = XGraphics.FromPdfPage(page1, XGraphicsPdfPageOptions.Append);
                gfx.DrawImage(image, 0, 0);
                gfx.Dispose();
                image.Dispose();
                page1.Close();
                bm2.Dispose();
            } 
            document.Save("c:\\temp\\faxsample.pdf");
            Console.WriteLine("Total Pages: " + total);

So Simple as that. Add pdfsharp in the reference nothing else to install.
Pdfsharp can be obtained from PDFSharp.

Tropo ClicktoCall with Conference in PHP - Cloud Telephony

2011-04-18T10:21:00.000-07:00



$calloptions['onAnswer'] = 'secondCallInitiator';
$calloptions['callerID'] = 'Calleridhere';
call('+1'.$numbertodial, $calloptions);

function secondCallInitiator($event)
{
$confid = $conferenceid;
$confoptions['mute'] = false;
$confoptions['playTones'] = true;
$confoptions['leaveprompt'] = 'beep';
$sleep(2);
Say('Please hold');
Conference($confid,$confoptions);
}

Pass two variables, numbertodail & conferenceid as POST parameters.
ClicktCall with Conference, That is so Simple to a Complex Infrastructure.

Tropo ClicktoCall PHP Script - Cloud Internet Telephony Made Easy !

2011-04-18T09:13:00.000-07:00



$aftercalloptions['onAnswer'] = 'onAnswerCB';
call('+1'. agentnumber, $aftercalloptions);

function onAnswerCB($event)
{
    global $customernumber;
    Sleep(3);
    transfer('+1' . $customernumber);
}

Cool and Pretty for a Complex Need !

Initiate a call with the following URL
https://api.tropo.com/1.0/sessions?action=create&token=yourtoken&agentnumber=agentnum&customernumber=custnum

Ensoy !

Adding a New Call to the SugarCRM through Code

2010-09-27T09:46:00.000-07:00

Ass a new Call to the SugarCRM through Code.



                    $call = new Call();

                    $call->direction = 'Outbound';

                    $call->status = 'Planned';

                    $call->contact_id = $contactid;

                    $call->duration_hours = '0';

                    $call->duration_minutes = '15';

                    $call->date_start = $date; // (mm/dd/yyyy hh:mmTT) format

                    $call->name = $subjectstring;

                    $call->assigned_user_id = $current_user->id;

                    $call->team_id = '1';

                    $call->team_set_id = '1';

                    $call->save();

                // Create the relationship to Contact to appear in the Contact Subpanel

                    $contact = new Contact();

                    $contact->retrieve($call->contact_id);

                    $contact->load_relationship('calls');

                    $contact->calls->add($call->id);

Enjoy.

Asterisk Events with Timestamp 1.4

2010-06-02T15:44:00.000-07:00

The below events is the incoming call to asterisk and Plays a prompt and does a Echo after that.

Event: Newchannel
Privilege: call,all
Timestamp: 1261277764.070399
Channel: SIP/broadvox-0a7bde90
State: Down
CallerIDNum:
CallerIDName:
Uniqueid: 1261277764.44

Event: Newcallerid
Privilege: call,all
Timestamp: 1261277764.070456
Channel: SIP/broadvox-0a7bde90
CallerID:
CallerIDName:
Uniqueid: 1261277764.44
CID-CallingPres: 0 (Presentation Allowed, Not Screened)

Event: Newstate
Privilege: call,all
Timestamp: 1261277765.729062
Channel: SIP/broadvox-0a7bde90
State: Up
CallerID:
CallerIDName:
Uniqueid: 1261277764.44

Event: OriginateResponse
Privilege: call,all
Timestamp: 1261277765.729085
Response: Success
Channel: SIP/broadvox-0a7bde90
Context: broadvoxcontext
Exten: 13038598130
Reason: 4
Uniqueid: 1261277764.44
CallerID:
CallerIDNum:
CallerIDName:

Event: Newexten
Privilege: call,all
Timestamp: 1261277765.729144
Channel: SIP/broadvox-0a7bde90
Context: broadvoxcontext
Extension: 13038598130
Priority: 1
Application: Answer
AppData: 4
Uniqueid: 1261277764.44

Event: Newexten
Privilege: call,all
Timestamp: 1261277765.729187
Channel: SIP/broadvox-0a7bde90
Context: broadvoxcontext
Extension: 13038598130
Priority: 2
Application: Read
AppData: DESTNO|vm-enter-num-to-call
Uniqueid: 1261277764.44

Event: Newexten
Privilege: call,all
Timestamp: 1261277778.705334
Channel: SIP/broadvox-0a7bde90
Context: broadvoxcontext
Extension: 13038598130
Priority: 3
Application: SayDigits
AppData: 12345
Uniqueid: 1261277764.44

Event: Newexten
Privilege: call,all
Timestamp: 1261277781.847347
Channel: SIP/broadvox-0a7bde90
Context: broadvoxcontext
Extension: 13038598130
Priority: 4
Application: Echo
AppData:
Uniqueid: 1261277764.44

Event: Hangup
Privilege: call,all
Timestamp: 1261277785.813339
Channel: SIP/broadvox-0a7bde90
Uniqueid: 1261277764.44
Cause: 16
Cause-txt: Normal Clearing

Unusable Google App Engine - Time wasting efforts with Google App Engine

2010-05-01T22:10:00.000-07:00

ok. I tried to inserted the data somehow each record with a new request and that worked fine. Now I tried to delete the data.

Tried to delete all at once. Did not work. Tried 100 at a time, Did not work.
Tried even 10 at a time, did not work. Deleting one by one that worked. Stupid Stuff !



 javax.jdo.Query q = pm.newQuery(Agent.class);

        Collection results = (Collection) q.execute();

        int deletecount =0;

        Iterator iter = results.iterator();

           while (iter.hasNext()) {

               if( deletecount > 1 )

                   break;

               pm.deletePersistent(iter.next());             

               deletecount++;

           }

If I try to delete one by one, then my quota got over. :) I used to delete millions of records at a time with the existing Databases. Google Datastore or Big Table (I would say funny table) it is a total crap here and totally unusable for enterprise.

I use Microsoft Windows just for browsing and playing games. (Sometimes it is not even worth to play games). Same here too. So far felt comfortable with Google technologies, the app engine is a total crap and the datastore is too crappy. So if you want to use cloud computing and don't deal with huge data at the same time, just like writing personal home based applications, then I would say, opt for Google Appengine. Otherwise keey away and don't waste your time.

More over from the above graph I have still lot of CPU hours left in Datastore CPU Time, I don't know what is the fun of limitation out there. So Daily quota is not Daily Quote, it is per second Quota. Just for marketing purposes they come with the big numbers above.

With the above facts, it becomes unusable for me to work with except to host static files and funny websites. Not yet ready for enterprise and not so reliable though.

Experience with Google App Engine Data Store

2010-05-01T16:31:00.000-07:00

Tried the Google's cloud platform with a simple example to store data.



package com.musugundan;

import java.io.IOException;
import java.util.Date;

import javax.jdo.PersistenceManager;
import javax.servlet.http.*;

@SuppressWarnings("serial")
public class MusugundanServlet extends HttpServlet {
 public void doGet(HttpServletRequest req, HttpServletResponse resp)
   throws IOException {
  resp.setContentType("text/plain");
  resp.addHeader("Refresh", "0; URL=/musugundan");
  resp.getWriter().println("Adding 100 records, Starting time " + new Date());
  PersistenceManager pm = PMF.get().getPersistenceManager();
  resp.flushBuffer();
        // 
                int maxrecords = 1000;
  for(long i=1;i<1000; i++)
  {
   Agent ag = new Agent("firstname" + i ,"lastname" + i,new Date());
   resp.getWriter().println("Writing Record :" + i );
   resp.flushBuffer();
            pm.makePersistent(ag);
  }    
        resp.getWriter().println("Added 100  records, Ending time " + new Date());
        resp.flushBuffer();
 }
}

When I set the maxrecords to 1000. It is error always. Means I cannot create 1000 records at a stretch.

I changed to 100. The timing went to 12 seconds to 25 seconds.

Change it to 1 and open multiple browsers with the instance of 100. It went on smoothly. Creating single record in a single request is pretty fast.

In Cloud computing make big things in a simpler way. That way it can work fast for its distributed nature of resources.

Asterisk Manager Interface to Python

2009-07-15T13:17:00.001-07:00

I was thinking bit strange about python String Handling and doing advanced operations. It is very hunger for strings and handle things in a neat way.

Eventhough there are python libraries available for Asterisk. Handling it in our code natively gives us more comfort.

Below is the code connects to AMI (Asterisk Manager Interface) and prints all the events which it receives from asterisk.

#!/usr/bin/env python

import socket
import sys


s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("127.0.0.1",5038))
s.settimeout(.5)
file = s.makefile("rw",8096)
file.write("Action: Login\r\nUsername: username\r\nSecret: secret\r\nEvents: On\r\n\r\n")
file.flush()
print "Starting to Receive ...\n"
AVDict = {}

while 1:
  try:
          data = file.readline()
          results = data.strip().split(": ")

          try:
                AVDict[results[0]].append(results[1])
          except KeyError:
                AVDict[results[0]] = results[1];
          except AttributeError:
                continue;
          except:
                print "[1001] ", sys.exc_info()[0]

  except IndexError:
          try:
                  print "AVDict is:", AVDict
                  AVDict.clear()
                  continue
          except:
                  try:
                        del AVDict[:]
                  except TypeError:
                        continue;
                  except:
                        print "[1003]  ", sys.exc_info()[0]
                        continue;
  except:
        #print "[1004]  ", sys.exc_info()[0]
        continue;

file.close()

Enjoy !

Getting the result of Netborder Call Progress Analyzer to an Asterisk variable

2009-06-24T11:27:00.000-07:00

/* Parse contact header for continued conversation */
/* When we get 200 OK, we know which device (and IP) to contact for this call */
/* This is important when we have a SIP proxy between us and the phone */
if (outgoing) {
int cpdstart=0;
const char *cpdresult = __get_header(req,"CPD-Result",&cpdstart);
if (!ast_strlen_zero(cpdresult))
pbx_builtin_setvar_helper(p->owner, "CPDRESULT", cpdresult);
update_call_counter(p, DEC_CALL_RINGING);

Add the above bold code in chan_sip.c and you will get the Call Progress Detection result in asterisk Dial plan.

If you originate a call through AMI, with the dialplan,

exten => _8.,1,Answer
exten => _8.,2,Noop(${CPDRESULT})
exten => _8.,3,Echo

You will see in the asterisk console similar to this,

-- Executing [8dfgdfgdfgdfgdgdgdfgd@something:1] Answer("SIP/963258-10058d50", "") in new stack
-- Executing [8dfgdfgdfgdfgdgdgdfgd@something:2] NoOp("SIP/963258-10058d50", "Answering-Machine") in new stack
-- Executing [8dfgdfgdfgdfgdgdgdfgd@something:3] Echo("SIP/963258-10058d50", "") in new stack

In this case it is Answering-Machine.

Asterisk How to Capture Events and Handle it with PHP easily, works with all 1.2, 1.4 & 1.6

2009-06-24T09:45:00.000-07:00

PHP makes the life easily when it comes to string parsing. Just enjoy to handle the events from asterisk.

#!/usr/bin/php -q

ob_implicit_flush(false);

$socket = fsockopen("hostname or ip","port", $errornum, $errorstr);
if(!$socket) {
print "Couldn't open socket. Error #" . $errornum . ": " . $errorstr;
} else {
fputs($socket, "Action: Login\r\n");
fputs($socket, "UserName: username\r\n");
fputs($socket, "Secret: password\r\n\r\n");
fputs($socket, "Action: Events\r\n");
fputs($socket, "EventMask: on\r\n\r\n");

fgets($socket); // Ignore the welcome message

$change = false;
$agentid = NULL;
$agentchannel = NULL;
$login = NULL;

while(true)
{
while(!feof($socket) )
{

$readbuf = "";
$resp = fread($socket,8192);
$readbuf .= $resp;
$allevents = split("\r\n\r\n",$readbuf);
foreach($allevents as $event)
{
$eventdetails = split("\r\n",$event);
$event_assoc = "";
foreach($eventdetails as $value ) {
$namevalue = split(": ",$value);
$event_assoc[$namevalue[0]] = $namevalue[1];
}
switch( $event_assoc['Event'] )
{
case 'Link': // Calls getting bridged
break;

default:
if( !empty($event_assoc['Event']) )
print_r($event_assoc);
}
}
fputs($socket, "Action: Ping\r\n\r\n");
usleep(1000000);
}

}

}

?>

Asterisk 1.2 , 1.4 & 1.6 Mp3 Voicemail using lame

2009-04-21T13:32:00.000-07:00

Google Code checkout:
svn co http://codeoftheday.googlecode.com/svn/trunk/21April2009

Uncomment the following line in voicemail.conf

externnotify=/var/lib/asterisk/agi-bin/sendvoicemail.php

#!/usr/bin/php

<?php
/*
Released under Public Domain. Feel Free to modify and use it.
*/
mb_language('uni');
mb_internal_encoding('UTF-8');
require("class.phpmailer.php");

@mysql_connect("localhost","sqlusername","sqlpassword");
$dbselect = @mysql_select_db("asterisktable");

$voicemaildir = "/var/spool/asterisk/voicemail/" . $argv[1] . "/";

$sfilename = sprintf($voicemaildir .
"%s/INBOX/msg%04d.wav",$argv[2],$argv[3]-1);

$dfilename = sprintf($voicemaildir .
"%s/INBOX/msg%04d.mp3",$argv[2],$argv[3]-1);

$infofilename = sprintf($voicemaildir .
"%s/INBOX/msg%04d.txt",$argv[2],$argv[3]-1);

system("lame -V2 $sfilename $dfilename");

$stmt = sprintf("Select * from voicemail_users where mailbox='%s' and
context='%s'",$argv[2],$argv[1]);
$result = mysql_query($stmt);
if( mysql_num_rows($result) == 0 )
{
exit;
}

$row = mysql_fetch_assoc($result);
$rcptemail = $row['email'];
$rcptname = $row['fullname'];

$msginfo = parse_ini_file($infofilename);
$mail = new PHPMailer();
$mail->From = "noreply@voicetoemail.com";
$mail->FromName = "VoicetoEmail";
$mail->AddAddress($rcptemail, $rcptname);
$mail->AddReplyTo("noreply@voicetoemail.com", "VoicetoEmail");
$mail->WordWrap = 50; // set word wrap to 50 characters
$mail->AddAttachment($dfilename); // add attachments
$mail->IsHTML(true); // set email format to HTML

$mail->Subject = "Voicemail from " . $msginfo['callerid'];
$mail->Body = "Dear " . $rcptname . ",\n Attached is the voice received
from " . $msginfo['callerid'] . "\n Date & Time:" . $msginfo['origdate'] .
"\n\n Support, \nhttp://www.CalltoEmail.com";
$mail->AltBody = $mail->Body;
$mail->Send();

system("rm -rf $sfilename");
system("rm -rf $dfilename");
system("rm -rf $infofilename");

?>

.spec file for sqlite3 for RPM or LTIB

2008-10-30T10:13:00.000-07:00

Was searching for sqlite3 .spec file for LTIB and here is one. If there are anything need to be changed to make it generic, please share it across.

%define pfx /opt/freescale/rootfs/%{_target_cpu}
%define __os_install_post %{nil}

Summary : SQLite is a C library that implements an embeddable SQL database engine
Name : sqlite
Version : 3.6.4
Release : 1
License : Public Domain
Vendor : Sqlite
Packager : Kannaiyan
Group : System/Libraries
Source : %{name}-%{version}.tar.gz
BuildRoot : %{_tmppath}/%{name}
Prefix : %{pfx}

%Description
SQLite is a software library that implements a self-contained, serverless,
zero-configuration, transactional SQL database engine.
Programs that link with the SQLite library can have SQL database access
without running a separate RDBMS process. The distribution comes with a
standalone command-line access program (sqlite) that can be used to
administer an SQLite database and which serves as an example of how to
use the SQLite library.

%Prep
%setup

%Build
export BUILD_CC=/usr/bin/gcc
./configure --prefix=%{_prefix} --host=$CFGHOST --build=%{_build} --mandir=%{_mandir} --infodir=%{_infodir}
make

%Install
rm -rf $RPM_BUILD_ROOT
make install DESTDIR=$RPM_BUILD_ROOT/%{pfx}
rm -f $RPM_BUILD_ROOT/%{pfx}/%{_prefix}/lib/*.la

%Clean
rm -rf $RPM_BUILD_ROOT

%Files
%defattr(-,root,root)
%{pfx}/*

Pattern Matching with PCRE Library

2007-08-21T15:35:00.000-07:00

Pattern matching is wonderful with Perl and when it is comes to C it is nice to build wonderful applications.

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <locale.h>
#include <errno.h>
#include <pcre.h>

int main(int argc,char *argv[])
{
pcre *re;
char cgets[250];
const char *error;
int erroffset;
int retexec;
re = pcre_compile("^(gnayiru|thingal|chevvai|budhan|viyazhan|velli|sani)$",0,&error,&erroffset,NULL);
if( re )
{
while(1){
printf("Enter the details you wish to match:");
fgets(cgets,250,stdin);
cgets[strlen(cgets)-1] = '\0';
retexec = pcre_exec(re,NULL,cgets,strlen(cgets),0,PCRE_PARTIAL,NULL,0);
switch( retexec)
{
case PCRE_ERROR_NOMATCH:
printf("No Matches\n");
break;
case PCRE_ERROR_PARTIAL:
printf("Partial Match\n");
break;
case 0:
printf("Perfect Match\n");
break;
default:
printf("Error Code: %d\n",retexec);
break;
}
}
} else {
printf("Error in Regex Compilation");
}
}

Output here:

[root@localhost 21Aug2007]# ./nkans.out
Enter the details you wish to match:thi
Partial Match
Enter the details you wish to match:thing
Partial Match
Enter the details you wish to match:thingal
Perfect Match
Enter the details you wish to match:fldjlsjfl
No Matches
Enter the details you wish to match:

Google Code checkout:

svn co http://codeoftheday.googlecode.com/svn/trunk/21Aug2007

Getting DNS SRV Records for voip through PHP

2007-08-19T00:04:00.000-07:00

It is important for the internet service to automatically locate the services at the moment. Just use this code to get the voip protocols service records from the DNS servers.

#!/usr/bin/php
< ?php

$domain = "pulver.com";

$voipprotocol = array("sip","iax");
$transportproto = array("udp","tcp");

foreach($voipprotocol as $voipprot)
{
foreach($transportproto as $trprot)
{
$voipdomain = "_" . $voipprot . "._" . $trprot . "." . $domain;
echo "Searching $voipdomain\n";
$rootinfo = dns_get_record($voipdomain,DNS_ALL, $nsinfo, $addinfo);
//print_r($rootinfo);
foreach($rootinfo as $srootinfo)
echo strtoupper($voipprot) . " " . strtoupper($trprot) . " HOST: " .
$srootinfo['target'] . ":" . $srootinfo['port'] . "\n";
}
}

?>

You can download using svn with the following command,

svn co http://codeoftheday.googlecode.com/svn/trunk/18Aug2007

Do Let me know if there are any improvements done, will keep updated.

Enjoy.

If you want to get this done under C, you can look into the ruli library.

Ruli - DNS SRV Resolver

Convert header file tree to source file tree - Shell Script

2007-08-07T08:01:00.000-07:00

It is usual practice to write header files first and then the source code. We usually need to go back an forth to get the header file name to start to go with the coding for enterprise projects.

Using the following command, you can convert the header tree to source tree.

find ./include -ls | awk '{print($3,$11);}' | cut -c1,11- | awk '{print($2,$1)}' | sed -e 's/^\.\/include//g' | awk '{if( $2 != "" ) print($1,$2);}' | awk '{if($2 == "d") printf("\"mkdir -p ./src%s\"\n",$1); else{ sub(/\.h$/,".cpp",$1); printf("\"touch ./src%s\"\n",$1);}}' | xargs | /bin/sh

replace .cpp with the extension you want.

It looks like

./include
|----dir1
|------- dir2
|-----------file.h
etc.,

./src
|--------dir1
|-----------dir2
|------------ file.cpp

All header files will replaced with their equivalent name in .c or .cpp with the extension you supply in the command.

Enjoy.

Find and Replace string in files under linux directory tree - Linux Shell Script

2007-08-06T23:27:00.000-07:00

This is one of most used command in linux to replace the string in files.

find . -name "*.cpp" | xargs grep -l stringtofind | xargs sed -i s/stringtofind/stringtoreplace/

Code to generate Unique Random Numbers - PHP

2007-08-03T16:40:00.000-07:00

I was looking for a Unique Random Number with different length to use it for one of the calling card company. This PHP script just rocks. Enjoy, download the code from svn rather than copy and paste.

#!/usr/bin/php

function generateuniquenumbers($len,$count,$includezero=1)
{

if( strlen($count) > $len )
{
echo "Looks something funny in the parameter which you have supplied. \n";
return ;
}
echo "Generating " . $count . " numbers with length " . $len . "\n";
$mult = 0;
$fract = 0;
$numbers[] = "";
mt_srand(10);
if( $len > 9 )
{
$mult = (int)($len/9);
$fract = (int) $len % 9;
} else {
$fract = $len;
}
if( $fract > 0 )
{
$minfract = "";
$maxfract = "";
for($m=0; $m<$fract; $m++)
{
if($includezero)
$minfract = "0";
else
$minfract .= "1";
$maxfract .= "9";
}
}

for($numcount=0;$numcount<$count;$numcount++)
{
$curnumber = "";
for($i=0;$i<$mult;$i++)
{
if( $includezero )
$currand = mt_rand(0,999999999);
else
$currand = mt_rand(111111111,999999999);
if( strlen($currand) <>
{
$templen = strlen($currand);
for( $pad = 9 - $templen; $pad > 0; $pad--)
$curnumber .= "0";
}
$curnumber .= $currand;
}
if( $fract > 0 )
{
$currand = mt_rand($minfract,$maxfract);
if( strlen($currand) <>
{
$templen = strlen($currand);
for( $pad=strlen($maxfract)-$templen;$pad > 0;$pad--)
$curnumber .= "0";
}
$curnumber .= $currand;
}
if( !in_array($curnumber,$numbers) )
{
$numbers[] = $curnumber;
}
else
$numcount --;
}
return $numbers;
}

$ncount = 20;
$nlength = 20;

$numbers = generateuniquenumbers($nlength,$ncount,0);

for($k=1;$k<=$ncount;$k++)
echo $numbers[$k] . "\n";

?>

Here is the output:

[root@kansdevhost devel]# ./kansrand.php
Generating 20 numbers with length 20
16181070355240094632
35133279664046683582
56683089348828603637
61797018627269033641
32242637617039241045
53775119541769589123
98009706424319286130
67830750255154478737
4554441961805820434
24613857566557562252
86485415760605734578
30890354240158234429
12549747923000041677
85786735955666425870
44706552566779852177
41866325246584913132
61537972143640201927
52078343311552209047
53657534152010051142
74283518264934633688

You can download using svn with the following command,

svn co http://codeoftheday.googlecode.com/svn/trunk/03Aug2007

Do Let me know if there are any improvements done, will keep updated.

Enjoy.

Forming main with a macro

2007-08-02T15:29:00.001-07:00

A cute simple program forming "main" with a macro. Have fun.

#include <stdio.h>

#define decode(s,t,u,m,p,e,d) m##s##u##t
#define begin decode(a,n,i,m,a,t,e)

int begin()
{
printf("hello");
return 0;
}

You can download from svn using,

svn checkout http://codeoftheday.googlecode.com/svn/trunk/02Aug2007

Enjoy.

Mangling with fd and /dev/null

2007-08-01T17:09:00.000-07:00

When doing the code faced a problem with the SSL Libraries doing error output and want to ignore it. Just got a nice idea from my friend Michael Waters. Here it is.

#include <iostream>
#include <fcntl.h>

using namespace std;

int main(int argc,char *argv[])
{
int devnullfd = open("/dev/null",O_RDWR);
int stderrfd = dup(2);
dup2(devnullfd,2);
cerr << "Am I out?" <<>
dup2(stderrfd,2);
cerr << "Am I In?" <<>
close(devnullfd);
}

svn also has the example in C.

You can download from svn with the command below.

svn checkout http://codeoftheday.googlecode.com/svn/trunk/01Aug2007 Enjoy. Will try to get something out tomorrow.