Description
Hello, I'm looking for help to do this lab, because I'm not that good at PERL programming language. I tried my best but nothing work. The submission is two hrs from now. can you help me do it please ?
LAB 5 - DESCRIPTION
Attached Files:
- perl example from the class.txt ==>this is help to use it as a template please
Create a Perl program that is simply a loop over a set of "Regular Expressions" that perform the tasks described below. Use the attached file SampleConfig.txt as input.
Note: Though this is a bit assignment is a bit contrived, it does represent the types of actual text manipulations that might be performed over many large files.
Instructions:
Using the attached SampleConfig.txt file, provide a Perl regular expression for each of the following tasks:
- Remove any leading or trailing space from each line.
- Replace all of the occurrences of a full line of # characters (ignoring leading or training spaces) with the following: # ---------- #
- Change any URL ending in .htm to end with .html
- For any set of multiple words following an equal sign (=), place what follows the equal sign in quotes.
- eg: a = bcd efg becomes a = "bcd efg"
- eg: a = bcd remains a = bcd
- Add a semicolon (;) to the end of every line.
- Every line beginning with a comment marker (#) and containing additional text should have one (and only one) space folling the comment marker.
- Replace any pattern in the form of [__UPPER-CASE CHARACTERS__] with (lower-case characters)
- ie: Open square bracket + two underscores + upper-case text + two underscores + close square bracket
- eg:[__SOMEDATA__] becomes [somedata]
- Follow every "config section" with a comment that indicates the current section count:
- For example:
[SVN] # Section: 1
[......] # Section: 2
etc.
- For example:
Submit:
A file containing the Perl code to fulfill the above requirements
A version of the SampleConfig.txt file incorporating all of the above changes
I send this a just a word of caution about the regex101 site. It turns out I was right the first time on LAB5-ex4:
- For any set of multiple words following an equal sign (=), place what follows the equal sign in quotes.
- eg: a = bcd efg becomes a = "bcd efg"
- eg: a = bcd remains a = bcd
The regular expression: ^(.*)=\s*(.+\s+.+)$ does exactly the right thing by matching:- The start of a line
- Any characters
- An equals sign
- Any spaces after the equals sign
- Group1
- One or more characters
- Followed by at least one white-space
- Followed by one or more characters.
- The end of a line.
However, the regex101 tester treats new-line characters (\n, \r, \f) as white-space characters, in "multi-line" mode.
To get around that issue you could define your own character class as just tabs and spaces like this: ^(.*)=\s*(.+[ \t]+.+)$
In other words, it was a simple as I thought it should have been and If I had copied my original attempt to the Perl script, it probably would have worked fine. (When it initially failed in regex101 I thought I was going to have to use a positive lookahead, which gets a bit more advanced.)
Explanation & Answer
Review
Review
