regex101: http://stackoverflow.com/questions/30405364

^start of line

<athe literal text <a (case sensitive)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

href="the literal text href=" (case sensitive)

Group 1([^"]+)

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2([^<]+)

Negated Character Class[^<]+

+matches at least one character outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

.*any character (except for line terminators), repeated any number of times

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

^<a[^>]*href="([^"]+)"[^>]*([^<]+).*$

Test String
New

<a href="final/main.html">Multimedia Implementation</a><br/>
<a href="final/toc.html">Table of Contents</a><br/>
<a href="final/pref01.html">About the Author</a><br/>
<a href="final/pref02.html">About the Technical Reviewers</a><br/>
<a href="final/pref03.html">Acknowledgments</a><br/>
<a href="final/part01.html">Part I: Introduction and Overview</a><br/>
<a href="final/ch01.html">Chapter 1. Technical Overview</a><br/>

Substitution
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<navpoint id="n" playOrder="">\n<navLabel><text>$2</text></navLabel>\n<content src="$1" />\n</navpoint>\n

Regular Expression

Test StringNew

SubstitutionProcessing...

Test String
New

Substitution
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