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iwcmp

kaalraa

Everyone there,

Can anyone provide me some inside details as how does iwcmp functionality proceeds in itself? Actually we have to create the comparison application in order to compare in between 2 workareas or branches (with same workarea name).

We are looking out for that info as we might want some extra info which is needed in our application producing the comparison result.

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Comments

ragz

The iwcmp will compare versions of the files .. for eg.. between a DCR in Workarea with a DCR in STAGING. But the drawback is, even if you have just opened the DCR in your workarea for editing but haven't edited, still iwcmp will show a version difference. TS will (I guess) create a new version of a file each time I try to edit it.

I have faced this problem while scripting in perl for workflows. I finally read the file in workarea and the file in Staging in 2 separate strings and compared them. Its a long workaround but it gives correct solutions.

kaalraa

Thanks for the prompt reply, but still i am looking for more inner basics of iwcmp. Smiley Happy

The iwcmp will compare versions of the files .. for eg.. between a DCR in Workarea with a DCR in STAGING. But the drawback is, even if you have just opened the DCR in your workarea for editing but haven't edited, still iwcmp will show a version difference. TS will (I guess) create a new version of a file each time I try to edit it.

I have faced this problem while scripting in perl for workflows. I finally read the file in workarea and the file in Staging in 2 separate strings and compared them. Its a long workaround but it gives correct solutions.

Adam Stoller

Thanks for the prompt reply, but still i am looking for more inner basics of iwcmp.

What? like how to reverse engineer a vendor's product? or what arguments to provide to do what you want to do?

If the former - you're dreaming.
If the latter - try running iwcmp with the '-h' flag and see if that answers your questions (or RTM CLT manual)

kaalraa

Hi Adam,

I understand iwcmp but my requirement is that i want to analyse the situation, what business is asking and draft a design out of it in order to provide a brief report to the user about the conflicts occur while comparing the workarea files to that of STAGING.

I was just asking for the inner basics as i want to know what exactly iwcmp compares to, behind the scene. So that we can decide whether we need to use iwcmp or to start with manually textual comparison to get the best results.

I hope you understand my requirement Smiley Wink

nipper

You may want to check out RCS merge from GNU. That has a number of the same functions as iwcmp (using common ancestor approach) and is open sourced.

Migrateduser

Hi Adam,

I was just asking for the inner basics as i want to know what exactly iwcmp compares to, behind the scene. So that we can decide whether we need to use iwcmp or to start with manually textual comparison to get the best results.

I hope you understand my requirement

You should contact support as they can give the outline of how iwcmp works.

kaalraa

DOES ANYONE HAVE ANY IDEA .... ABOUT THE CASE WHERE iwcmp DOES NOT RETURN ANY COMPARISON RESULT?
I have already checked the file existence on both the paths provided as parameter to iwcmp.

You should contact support as they can give the outline of how iwcmp works.

Adam Stoller

DOES ANYONE HAVE ANY IDEA .... ABOUT THE CASE WHERE iwcmp DOES NOT RETURN ANY COMPARISON RESULT?
I have already checked the file existence on both the paths provided as parameter to iwcmp.

What do you mean?
That you have a file in both locations - and the file is the same in both locations - and iwcmp does not bother report anything because the files are the same?

If you want some help with this - you'll need to provide an easy-to-reproduce scenario that any one of us could set up, along with all the procedural steps needed to be taken in order to see the results you're seeing and notes on why you think the behavior is wrong or inconsistant.

kaalraa

Yeah... actually it happens when i use iwcmp as file to file comparison. The file i am passing as parameter is EXACTLY same in both the workareas. I mean 'Exactly' as its just identical as per its modification date, last modified user, inner file contents etc.

What i expect as a result at least it should show me f and f or - and - as the result of iwcmp output.

Where as when i run iwcmp and workarea comparison then it shows me the same result for that file in both of the workareas.

If you want to check you have to create identical files on two workareas and then check for iwcmp results. I can only wish and hope it would show you result.

Adam Stoller

Yeah... actually it happens when i use iwcmp as file to file comparison. The file i am passing as parameter is EXACTLY same in both the workareas. I mean 'Exactly' as its just identical as per its modification date, last modified user, inner file contents etc.

What i expect as a result at least it should show me f and f or - and - as the result of iwcmp output.

Where as when i run iwcmp and workarea comparison then it shows me the same result for that file in both of the workareas.

If you want to check you have to create identical files on two workareas and then check for iwcmp results. I can only wish and hope it would show you result.

Okay - now I understand a bit more - and I'd say it's working exactly as it was designed to work - which is that it only shows differences - not commonalities. If you're looking for something to provide you a list of all the files in two locations which are identical - you'll probably have to write it yourself (using tools that already exist or creating your own as you go).