Counting changed lines of code over time

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长情又很酷
长情又很酷 2021-02-01 02:24

Is there any good tool that computes the number of changed lines of code over a certain time period in a mercurial repository? Something along the lines of statsvn would be grea

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  • 2021-02-01 02:59

    The hg churn extension is what you want.

    You can get visual results with hg activity or hg chart.

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  • 2021-02-01 03:01

    Edit: hg diff and hg log both support a --stat option that can do this for you, only better and quicker.


    I made an alias called lines to count changed lines (not necessarily lines of code) for me. Try putting this alias in your .hgrc file:

    [alias]
    lines = !echo `hg log -pr $@ | grep "^+" | wc -l` Additions; echo `hg log -pr $@ | grep "^-" | wc -l` Deletions; 
    

    Then pass it the revision first, followed by any optional arguments:

    hg lines tip or hg lines 123:456 -u brian

    Sometimes you want to know the number of lines changed excluding whitespace-only changes. This requires using diff -w underneath instead of log -p. I set up a linesw alias for this:

    #ignore whitespace
    linesw = ![[ $1 =~ : ]] && r=$1 || r="$1~1:$1"; echo `hg diff -wr $r | grep "^+\([^+]\|$\)" | wc -l` Additions; echo `hg diff -wr $r | grep "^-\([^-]\|$\)" | wc -l` Deletions; 
    

    hg linesw tip or hg lines 123:456

    Note they behave slightly differently because diff and log behave differently -- for example, log will take a --user parameter while diff will not, and when passing a range, log will show changes commited in the first revision given in the range, while diff will not.

    This has only been tested using bash.

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  • 2021-02-01 03:05

    I needed to do this, and spent quite a bit of time with the hg churn extension and similar solutions.

    In the end, I found that what worked best for me was CLOC (Count Lines of Code): http://cloc.sourceforge.net/

    You can give it two folders containing two versions of a project, and it will count all of the lines that are the same, modified, added, removed. It recognises multiple languages and itemises code, comments and blank lines.

    To use it, I pulled out the two versions of my code from Hg into two parallel folders, and then used cloc --diff --ignore-whitespace

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