CODEWITHSUNDEEP
regexbashstring-parsing
Jon Sud
Jon Sud

Reputation: 11671

how to parse commit message into variables using bash?

I using bash and I have string (a commit message) 

:sparkles: feat(xxx): this is a commit

and I want to divide it into variables sections:

emoji=:sparkles:
type=feat
scope=xxx
message=this is a commit

I try to use grep, but the regex is not return what I need (for example the "type") and anyway how to paste it into variables? 

echo ":sparkles: feat(xxx): this is a commit" | grep "[((.*))]"

Upvotes: 0

Views: 253

Answers (1)

Cyrus
Cyrus

Reputation: 88999

With bash version >= 3, a regex and an array:

x=":sparkles: feat(xxx): this is a commit"

[[ "$x" =~ ^(:.*:)\ (.*)\((.*)\):\ (.*)$ ]]
echo "${BASH_REMATCH[1]}"
echo "${BASH_REMATCH[2]}"
echo "${BASH_REMATCH[3]}"
echo "${BASH_REMATCH[4]}"

Output:

:sparkles:
feat
xxx
this is a commit

From man bash:

BASH_REMATCH: An array variable whose members are assigned by the =~ binary operator to the [[ conditional command. The element with index 0 is the portion of the string matching the entire regular expression. The element with index n is the portion of the string matching the nth parenthesized subexpression. This variable is read-only.

Upvotes: 5

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