tests/pdiff
author Pierre-Yves David <pierre-yves.david@ens-lyon.org>
Fri, 26 Aug 2016 21:00:33 +0200
changeset 29880 a485ec066867
parent 28337 869e65e68aee
child 33611 a2b55ee62803
permissions -rwxr-xr-x
histedt: use inheritance to override the constraints in 'base' All actions but one actually have the same constraints when it comes to validate the 'action.node' value. So we actually just add this code to a method that can be overwritten in the one action where it matters. The now unused 'contraints' related enum and class attribute will be cleaned up in the next changeset.
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#!/bin/sh
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# Script to get stable diff output on any platform.
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#
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# Output of this script is almost equivalent to GNU diff with "-Nru".
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#
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# Use this script as "hg pdiff" via extdiff extension with preparation
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# below in test scripts:
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#
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#   $ cat >> $HGRCPATH <<EOF
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#   > [extdiff]
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#   > pdiff = sh "$RUNTESTDIR/pdiff"
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#   > EOF
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filediff(){
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    # USAGE: filediff file1 file2 [header]
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    # compare with /dev/null if file doesn't exist (as "-N" option)
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    file1="$1"
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    if test ! -f "$file1"; then
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        file1=/dev/null
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    fi
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    file2="$2"
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    if test ! -f "$file2"; then
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        file2=/dev/null
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    fi
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    if cmp -s "$file1" "$file2" 2> /dev/null; then
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        # Return immediately, because comparison isn't needed. This
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        # also avoids redundant message of diff like "No differences
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        # encountered" (on Solaris)
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        return
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    fi
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    if test -n "$3"; then
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        # show header only in recursive case
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        echo "$3"
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    fi
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    # replace "/dev/null" by corresponded filename (as "-N" option)
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    diff -u "$file1" "$file2" |
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    sed "s@^--- /dev/null\(.*\)\$@--- $1\1@" |
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    sed "s@^\+\+\+ /dev/null\(.*\)\$@+++ $2\1@"
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}
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if test -d "$1" -o -d "$2"; then
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    # ensure comparison in dictionary order
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    (
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    if test -d "$1"; then (cd "$1" && find . -type f); fi
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    if test -d "$2"; then (cd "$2" && find . -type f); fi
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    ) |
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    sed 's@^\./@@g' | sort | uniq |
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    while read file; do
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        filediff "$1/$file" "$2/$file" "diff -Nru $1/$file $2/$file"
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    done
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else
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    filediff "$1" "$2"
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fi