How to capture a substring from a string in robot-framework

[dineshbh...@gmail.com]

Hello,

i want to know on  how to capture sub-string from a given string based on regular expression grouping like in python.

I tried with "Get Lines Containing String" keyword. But, it displays the entire line

Tried with other keywords also. but, not successful:

#${line}    Get Lines Containing String    ${output}    H1

#${line}    Get Lines Matching Pattern    ${output}    H1

Basically, i want to capture the first substring "13fdc377-f509-4df0-bf87-df7285f228b0" if the line matches "H1" which  is there in the line ${output}. Please suggest on how to do it in robot framework. This can be  achievable in python with regular expression and grouping. Please suggest.

${output}    '| 13fdc377-f509-4df0-bf87-df7285f228b0 | -    | 8c8798ef-bb3b-4bf6-abad-8bdd63d730d0 | H1               |'

*** Test Cases ***

PrintRegex

    ${line}    Get Lines Containing String    ${output}    H1

    Log To Console    ${line}

[p_kumar]

Hi Dinesh,

I don't know if your variables  ${output} and  ${line}  can contain multiple lines(Which could require further splitting  ${line}  into lines)  but here's what you can use for now.

Please find the below code:

${output}       '| 13fdc377-f509-4df0-bf87-df7285f228b0 | -  | 8c8798ef-bb3b-4bf6-abad-8bdd63d730d0 | H1  |'

*** Test Cases ***

PrintRegex

  ${line}  Get Lines Containing String  ${output}  H1

  Log  ${line}

  @{word_list}=  Split String  ${line}  |

  Log  @{word_list}[1]

Console Output

Starting test: first testProj.TestAutomationSuite1.PrintRegex

20200902 19:35:47.751 :  INFO : 1 out of 1 lines matched

20200902 19:35:47.751 :  INFO : ${line} = '| 13fdc377-f509-4df0-bf87-df7285f228b0 | - | 8c8798ef-bb3b-4bf6-abad-8bdd63d730d0 | H1 |'

20200902 19:35:47.753 :  INFO : '| 13fdc377-f509-4df0-bf87-df7285f228b0 | - | 8c8798ef-bb3b-4bf6-abad-8bdd63d730d0 | H1 |'

20200902 19:35:47.754 :  INFO : @{word_list} = [ ' |  13fdc377-f509-4df0-bf87-df7285f228b0  |  -  |  8c8798ef-bb3b-4bf6-abad-8bdd63d730d0  |  H1  | ' ]

20200902 19:35:47.755 :  INFO :  13fdc377-f509-4df0-bf87-df7285f228b0 

Ending test:   first testProj.TestAutomationSuite1.PrintRegex

Thanks

[tothsz...@gmail.com]

Hej!

And if you really want to use regex, you can do it with Get Regexp Matches.

*** Variables ***

${OUTPUT}    | 13fdc377-f509-4df0-bf87-df7285f228b0 | -    | 8c8798ef-bb3b-4bf6-abad-8bdd63d730d0 | H1               |

*** Test Cases ***

Extract UUIDs From String #1

    ${uuids}=    Get Regexp Matches    ${OUTPUT}    [0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}

    Log To Console    ${uuids}

    Log To Console    ${uuids[0]}

The output will be the following:

==============================================================================
Regex                                                                         
==============================================================================
Extract ID From String                                                .All UUIDs: ['13fdc377-f509-4df0-bf87-df7285f228b0', '8c8798ef-bb3b-4bf6-abad-8bdd63d730d0']
.First UUID: 13fdc377-f509-4df0-bf87-df7285f228b0

I also have an improvement idea for Kumar's solution.

First, remove the pipe lines and after that you can use split.

In this case you will get rid of the unnecessary empty strings in the list.

*** Test Cases ***

Extract ID From String #2

    ${output_without_spaces}=    Remove String    ${OUTPUT}    |

    @{words}=    Split String    ${output_without_spaces}

    Log To Console    Words: ${words}

    Log To Console    First UUID: ${words[0]}

The output will be the following:

==============================================================================
Regex                                                                         
==============================================================================
------------------------------------------------------------------------------
Extract ID From String #2                                             ..Words: ['13fdc377-f509-4df0-bf87-df7285f228b0', '-', '8c8798ef-bb3b-4bf6-abad-8bdd63d730d0', 'H1']
.First UUID: 13fdc377-f509-4df0-bf87-df7285f228b0