Python is Awesome 
Saturday, August 6, 2011, 15:08
Posted by Administrator
Case in point:

def fahrenheit(celsius):
fahr = (9.0/5.0)*celsius + 32
return fahr
for temp_c in range (0, 41):
temp_f = fahrenheit(temp_c)
print temp_c,"C" , "| %.1f F" % temp_f


Its almost like too-perfect of a language. I feel like I avoid using it because it is just too nice. Its like some sort of super perl that transforms everything into awesomesauce.

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Weather Grabber 
Monday, July 4, 2011, 15:11
Posted by Administrator
For the last couple of days I have been working the chat server and client that I made last semester. Adding additional features to it has been slow but satisfying work.

A weather function has been at the top of my list for things I wanted to see myself implement, so last night I decided to get to working on making something to retrieve the weather.

I've been using the bash script below to get weather information for months now:

#!/bin/bash

var_url="http://www.google.com/ig/api?weather=72959&hl=en"

var_weather_wget=`wget -q $var_url -O -`
var_weather_xml=`echo "$var_weather_wget" | sed 's/<forecast_conditions>.*//'`
var_weather=`echo "$var_weather_xml" | sed 's/></>\n</g'`
var_date=`echo "$var_weather" | grep -e '<forecast_date' | \
sed -e 's/<forecast_date data="//' -e 's/"\/>//'`
var_city=`echo "$var_weather" | grep -e '<city' | \
sed -e 's/<city data="//' -e 's/"\/>//'`
var_condition=`echo "$var_weather" | grep -e '<condition' | \
sed -e 's/<condition data="//' -e 's/"\/>//'`
var_temp_f=`echo "$var_weather" | grep -e '<temp_f' | \
sed -e 's/<temp_f data="//' -e 's/"\/>//'`
var_temp_c=`echo "$var_weather" | grep -e '<temp_c' | \
sed -e 's/<temp_c data="//' -e 's/"\/>//'`
var_humidity=`echo "$var_weather" | grep -e '<humidity' | \
sed -e 's/<humidity data="//' -e 's/"\/>//'`
var_wind=`echo "$var_weather" | grep -e '<wind' | \
sed -e 's/<wind_condition data="//' -e 's/"\/>//'`

echo "Date: $var_date - City: $var_city"
echo "Condition: $var_condition"
echo "Temp: $var_temp_c C"
echo "$var_humidity"
echo "$var_wind"


This has been working well, but I wanted to make something more extensible with Java that I could add to my chatserver and run with any zipcode instead of just having it set to one location.

After finagling around a little I was able to come up with something I'm liking pretty well that fit great into the server I'm putting together:

This has been working well, but I wanted to make something more extensible with Java that I could add to my chatserver and run with any zipcode instead of just having it set to one location.

After finagling around a little I was able to come up with something I'm liking pretty well that fit great into the server I'm putting together:

/*   < <  Current Weather > >      |
Forecast from Google's API |
Spike Snell |
2011 |
----------------------------------*/

import java.io.*;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class weather {

public static void main(String[] args) throws Exception {

if (args.length > 0)
System.out.println(toString(args[0]));
else
System.out.println("Please enter a valid 5 digit zipcode. Example: java weather 72701");

}

public static BufferedReader read(String url) throws Exception {
return new BufferedReader(new InputStreamReader(new URL(url).openStream()));
}

public static String toString(String zip) throws Exception {

// variables to hold the weather
String date = null;
String city = null;
String condition = null;
String tempC = null;
String humidity = null;
String wind = null;

// declare the pattern and matcher
Pattern p;
Matcher m;

// check to make sure the string is the right number of characters
if (zip.length() != 5)
return "Please enter the correct number of digits.";

// and make sure all 5 of the characters are numbers
p = Pattern.compile("\\d{5}");
m = p.matcher(zip);
if (m.find() == false)
return "Please enter a valid 5 digit zipcode.";

// open up a connection to google's weather API
BufferedReader reader = read("http://www.google.com/ig/api?weather="+ zip);
String page = reader.readLine();

// get the date
p = Pattern.compile("<forecast_date data=\"(.*?)\"/>");
m = p.matcher(page);
if (m.find() == true)
date = m.group(1);

// get the city
p = Pattern.compile("<city data=\"(.*?)\"/>");
m = p.matcher(page);
if (m.find() == true)
city = m.group(1);

// get the condition
p = Pattern.compile("<condition data=\"(.*?)\"/>");
m = p.matcher(page);
if (m.find() == true)
condition = m.group(1);

// get the temperature in C
p = Pattern.compile("<temp_c data=\"(.*?)\"/>");
m = p.matcher(page);
if (m.find() == true)
tempC = m.group(1);

// get the humidity
p = Pattern.compile("<humidity data=\"(.*?)\"/>");
m = p.matcher(page);
if (m.find() == true)
humidity = m.group(1);

// get the humidity
p = Pattern.compile("<wind_condition data=\"(.*?)\"/>");
m = p.matcher(page);
if (m.find() == true)
wind = m.group(1);

// if the date is still null there was a problem
if (date == null) {
return "There was a problem retrieving the weather.";
}

else {
// return the forecast
return city + " - " + date +
"\nCondition: " +
condition+ "\nTemp: " +
tempC + " *C\n" +
humidity + "\n" +
wind;
}
}
}

What it does is taken in a command line argument for the zipcode and after a bit of error checking (Making sure the zipcode is actually 5 numbers) it grabs the data from google's weather API, runs it through some regexes to grab the data I want and then returns everything as a string.

Here is an example of it in use:

nrg@AKIRA ~/Desktop $ java weather 72701
Fayetteville, AR - 2011-07-04
Condition: Mostly Cloudy
Temp: 27 *C
Humidity: 74%
Wind: S at 5 mph


Any feedback on improving this code or any other comments about it would be much appreciated.

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Tennessee outlaws offensive imagery  
Thursday, June 9, 2011, 15:14
Posted by Administrator
A law was recently updated in Tennessee making it illegal for any resident to transmit or display any image which causes "emotional distress". Breaking this new law can cause you to receive up to a year of jailtime or fines not exceeding $2,500.

This is a blatant violation of the right to free speech and as some have pointed out the law even violates itself by being so offensive. Just the fact that something like this can get passed into effect has to make you wonder if people are really this misinformed about electronic communication or if they are just trying to pass something so ridiculous that people take notice.

The problem isn't even primarily that the law against obscenity (an undeniable trait of humanity) but that its so up to interpretation that it could be applied to almost anything.

Requirements for breaking this law are as follows:
(a) A person commits an offense who intentionally:

(4) Communicates with another person or transmits or displays an image in a manner in which there is a reasonable expectation that the image will be viewed by the victim by [by telephone, in writing or by electronic communication] without legitimate purpose:

(A) (i) With the malicious intent to frighten, intimidate or cause emotional distress; or

(ii) In a manner the defendant knows, or reasonably should know, would frighten, intimidate or cause emotional distress to a similarly situated person of reasonable sensibilities; and

(B) As the result of the communication, the person is frightened, intimidated or emotionally distressed.


Its all enough to make one relate to a gloomy proposition put forth in a book called Atlas Shrugged over a decade ago:
"Did you really think we want those laws observed?" said Dr. Ferris. "We want them to be broken. You'd better get it straight that it's not a bunch of boy scouts you're up against... We're after power and we mean it... There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws. Who wants a nation of law-abiding citizens? What's there in that for anyone? But just pass the kind of laws that can neither be observed nor enforced or objectively interpreted – and you create a nation of law-breakers – and then you cash in on guilt. Now that's the system, Mr. Reardon, that's the game, and once you understand it, you'll be much easier to deal with." ('Atlas Shrugged' 1957)


Hopefully this law will immediately be removed or drastically modified due to all of the attention it has been getting in the last few days.
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