string manipulation in ruby on rails

Question

I have a string of the format,

/d.phpsoft_id=369242&url=http://f.1mobile.com/mobile_software/finance/com.mshift.android.achieva_2.apk

and i need to edit this string using regular expression that the result string should start from http: ie the resultatnt string should be

http://f.1mobile.com/mobile_software/finance/com.mshift.android.achieva_2.apk

please help

TomJ · Accepted Answer · 2013-01-14 05:46:30Z

1

For these types of situations, I prefer to go with readily available tools that will help provide a solution or at the very least will point me in the right direction. My favourite for regex is txt2re because it will output example code in many languages, including ruby.

After running your string through the parser and selecting httpurl for matching, it output:

txt='/d.phpsoft_id=369242&url=http://f.1mobile.com/mobile_software/finance/com.mshift.android.achieva_2.apk'

re1='.*?'   # Non-greedy match on filler
re2='((?:http|https)(?::\\/{2}[\\w]+)(?:[\\/|\\.]?)(?:[^\\s"]*))'   # HTTP URL 1

re=(re1+re2)
m=Regexp.new(re,Regexp::IGNORECASE);
if m.match(txt)
    httpurl1=m.match(txt)[1];
    puts "("<<httpurl1<<")"<< "\n"
end

answered Jan 14, 2013 at 5:46

TomJ

5,4995 gold badges30 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

99miles Over a year ago

What if there are multiple url's in the params? How do you know you want the first match?

99miles · Accepted Answer · 2013-01-14 05:34:38Z

0

str = "/d.phpsoft_id=369242&url=http://f.1mobile.com/mobile_software/finance/com.mshift.android.achieva_2.apk"

str.split("url=")[1]

answered Jan 14, 2013 at 5:34

99miles

11.3k19 gold badges84 silver badges126 bronze badges

2 Comments

or9ob Over a year ago

This will break if there is another url= anywhere else.

99miles Over a year ago

You're going to pass multiple url parameters? Define the requirements please.

Mohammad Sadiq Shaikh · Accepted Answer · 2013-01-14 05:54:52Z

0

Simple Answer

You need to do following

str = "/d.phpsoft_id=369242&url=http://f.1mobile.com/mobile_software/finance/com.mshift.android.achieva_2.apk"

start=str.index('http://')

resultant=str[start,str.length]

answered Jan 14, 2013 at 5:54

Mohammad Sadiq Shaikh

3,20010 gold badges38 silver badges54 bronze badges

Collectives™ on Stack Overflow

string manipulation in ruby on rails

3 Answers 3

1 Comment

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related