regex101: PCRE (Legacy) Match Workspace

<metaDatathe literal text <metaData (case sensitive)

\s+any whitespace character, repeated at least once

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

Group 1([^"]+)

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

">the literal text ">

Group 2((?!<\/metaData>).+)

Negative Lookahead(?!<\/metaData>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

metaData>the literal text metaData> (case sensitive)

.+any character (except for line terminators), repeated at least once

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

metaData>the literal text metaData> (case sensitive)

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

25 tokens

Regular Expression

<metaData\s+key="([^"]+)">((?!<\/metaData>).+)<\/metaData>

New

 <metaDataSet>
             <metaData key="DocName">mm1266505-20180330195251.txt</metaData>
             <metaData key="TARGET">Brazil BES</metaData>
             <metaData key="com.ibm.wmqfte.OriginatingUser">eimb@CORPWEB</metaData>
             <metaData key="com.ibm.wmqfte.OriginatingHost">B051S317.jci.com</metaData>
             <metaData key="com.ibm.wmqfte.TransferId">414d512050445053514d513031202020770fbe5aacf88f20</metaData>
             <metaData key="com.ibm.wmqfte.Priority">0</metaData>
         </metaDataSet>

Substitution

 <metaDataSet>
             <metaData key="DocName">mm1266505-20180330195251.txt</metaData>
             <metaData key="TARGET">Brazil BES</metaData>
             <metaData key="com.ibm.wmqfte.OriginatingUser">eimb@CORPWEB</metaData>
             <metaData key="com.ibm.wmqfte.OriginatingHost">B051S317.jci.com</metaData>
             <metaData key="com.ibm.wmqfte.TransferId">414d512050445053514d513031202020770fbe5aacf88f20</metaData>
             <metaData key="com.ibm.wmqfte.Priority">0</metaData>
         </metaDataSet>