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Archive for the ‘My_Works’ Category

Atlast i came up with a real rhythmbox plugin for setting the status message in pidgin as the current song title playing in Rhythmbox music player .I wrote it a few month before and was using it. Thought of sharing it before but didnt get time. Actually i forgot about my blog when i started microblogging. From now onwards i will be updating this blog regularly.( this is what i wanted to do always 😀 )

Download the plugin from here : http://ragsagar.freehostia.com/rb-nowplaying.tar.gz
To install it.
1) Extract the tarball.
2) Copy it to ~/.gnome2/rhythmbox/plugins/ (if no such directories exists, create them)
3) Open rhythmbox. Edit -> Plugins
4) Check ‘Now Playing Pidgin’

That’s it. If you are facing any problems do comment.

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Just thought of sharing the code i written to learn linked list implementation the day before my data structures model practical exam.

/*
 *      linkedlist.c
 *      
 *      Copyright 2009 Rag Sagar.V <ragsagar@gmail.com>
 *      
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *      
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *      
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 *      MA 02110-1301, USA.
 */


#include <stdio.h>
#include <stdlib.h>

typedef struct list
{
	int data;
	struct list *next;
}LIST;
LIST *ptr,*temp,*start=NULL;
void insert_after(int ,int );
void remove_item(int );
void display(void);
int count=0;
int main()
{
	int item,opt,dat;
	system("clear");
	ptr=NULL;
	/* printf("%d",sizeof(LIST)); */
	do
	{
		printf("\n########## MENU ##########\n");
		printf("1.Insert\n2.Remove\n3.Display\n4.Exit\n");
		printf("Enter your option : ");
		scanf("%d",&opt);
	 	switch(opt)
	 	{
	 		case 1:
	 		printf("Enter the data to insert ");
	 		scanf("%d",&item);
	 		if(count==0)
	 		{
	 			ptr = (LIST *)malloc(sizeof(LIST));
	 			ptr->next = NULL;
	 			ptr->data = item;
	 			start = ptr;
			}
			else
			{
				printf("Enter the item after which you have to insert new element : ");
				scanf("%d",&dat);
				insert_after(dat,item);
			}
			count++;
				break;
	 		case 2: 
	 		if(count==0)
	 		{
	 			printf("\nList is empty\n"); break; 
			}
	 		printf("Enter the item to remove : ");
	 		scanf("%d",&item);
	 		remove_item(item);
	 		count--;
	 		break;
	 		case 3: 
	 		if(count==0)
	 		{
	 			printf("\nList is empty\n");
	 			break;
	 		}
	 		else
	 		{
	 			printf("List elements are \n"); display(); 
			}
			break;
	 		case 4: break;
		}
	}while(opt!=4);
	return 0;
}
void insert_after(int data, int item)
{	
	LIST *tmp;
	temp=(LIST *)malloc(sizeof(LIST));
	temp->data=item;
	ptr=start;
	
	while(ptr!=NULL)
	{
		if(ptr->data==data)
		{
			tmp=ptr->next;
			ptr->next=temp;
			temp->next=tmp;
			break;
		}
	ptr=ptr->next;	
	}
		
}	

void remove_item(int item)
{
	ptr=start;
	if(ptr->data == item)
	{
		start = ptr->next;
		free(ptr);
	}
	while(ptr->next!=NULL)
	{
		if((ptr->next)->data==item)
		{
			temp=ptr->next;
			ptr->next=(ptr->next)->next;
			free(temp);
			break;
		}
		ptr=ptr->next;
	}
}
			
void display()
{
	ptr = start;
	while(ptr!=NULL)
	{
		printf("%d -> ",ptr->data);
		ptr=ptr->next;
	}
}			

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Here is a script to provide weather information of a city with the help of google api.
#!/usr/bin/python
#Rag Sagar 
#Free to copy, modify and redistribute

import sys 
from urllib2 import urlopen, URLError
from xml.sax import make_parser
from xml.sax.handler import ContentHandler


class WeatherFinder(ContentHandler):
	"""the handler class"""
	def __init__(self):
		self.weather_list = []
		self.go_on = False
		
	def startElement(self, tag, attrs):
		"handles the opening tags"
		if tag == 'current_conditions':
			self.go_on = True
		if self.go_on : # so that only values inside current_conditions tag is appended
			if tag == 'condition' :
				self.weather_list.append('Condition: '+attrs.get('data',""))
			elif tag == 'humidity' :
				self.weather_list.append(attrs.get('data',""))			
			elif tag == 'temp_c' :
				self.weather_list.append('Temperature:'+attrs.get('data',"")+'C')
			elif tag == 'wind_condition' :
				self.weather_list.append(attrs.get('data',""))
		return
		
	def endElement(self, tag):
		"handles closing tags"
		if tag == 'current_conditions':
			self.go_on = False

if len(sys.argv) is not 2 :
	print "Syntax : ",sys.argv[0],"  \n"
	sys.exit(1)
else :
	city = sys.argv[1]
	url = 'http://www.google.com/ig/api?weather='+city
	parser = make_parser()
	obj = WeatherFinder()
	parser.setContentHandler(obj)
	try :
		parser.parse(urlopen(url))
	except URLError:
		print "\n\33[33m Unable to fetch data..\33[0m\n"
		sys.exit(1)
	if obj.weather_list == [] :
		print "\n\33[33m Invalid city name, Try another.. \33[0m\n "	
	else :
		print "\33[33mWeather Conditions of",city,"\33[36m"
		for i in obj.weather_list:
			print i	
		print "\33[0m"
		

Checkout its screenshot

Weather utility

Weather utility

Thanks to rohit

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