annotate tests/pdiff @ 36705:c6901665cd5b

py3: make sure __repr__ returns a str # skip-blame because just r'' prefix Differential Revision: https://phab.mercurial-scm.org/D2652
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 04 Mar 2018 22:40:33 +0530
parents a2b55ee62803
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/bin/sh
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2
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3 # Script to get stable diff output on any platform.
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4 #
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5 # Output of this script is almost equivalent to GNU diff with "-Nru".
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6 #
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7 # Use this script as "hg pdiff" via extdiff extension with preparation
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8 # below in test scripts:
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9 #
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10 # $ cat >> $HGRCPATH <<EOF
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11 # > [extdiff]
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12 # > pdiff = sh "$RUNTESTDIR/pdiff"
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13 # > EOF
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14
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15 filediff(){
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16 # USAGE: filediff file1 file2 [header]
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17
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18 # compare with /dev/null if file doesn't exist (as "-N" option)
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19 file1="$1"
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20 if test ! -f "$file1"; then
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21 file1=/dev/null
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22 fi
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23 file2="$2"
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24 if test ! -f "$file2"; then
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25 file2=/dev/null
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26 fi
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27
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28 if cmp -s "$file1" "$file2" 2> /dev/null; then
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29 # Return immediately, because comparison isn't needed. This
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30 # also avoids redundant message of diff like "No differences
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31 # encountered" (on Solaris)
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32 return
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33 fi
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34
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35 if test -n "$3"; then
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36 # show header only in recursive case
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37 echo "$3"
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38 fi
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39
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40 # replace "/dev/null" by corresponded filename (as "-N" option)
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41 diff -u "$file1" "$file2" |
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42 sed "s@^--- /dev/null\(.*\)\$@--- $1\1@" |
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43 sed "s@^\+\+\+ /dev/null\(.*\)\$@+++ $2\1@"
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44
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45 # in this case, files differ from each other
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46 return 1
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47 }
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48
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49 if test -d "$1" -o -d "$2"; then
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50 # ensure comparison in dictionary order
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51 (
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52 if test -d "$1"; then (cd "$1" && find . -type f); fi
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53 if test -d "$2"; then (cd "$2" && find . -type f); fi
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54 ) |
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55 sed 's@^\./@@g' | sort | uniq |
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56 while read file; do
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57 filediff "$1/$file" "$2/$file" "diff -Nru $1/$file $2/$file"
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58 done
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59
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60 # TODO: there is no portable way for current while-read based
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61 # implementation to return 1 at detecting changes.
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62 #
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63 # On bash and dash, assignment to variable inside while-block
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64 # doesn't affect outside, because inside while-block is executed
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65 # in sub-shell. BTW, it affects outside while-block on ksh (as sh
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66 # on Solaris).
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67 else
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68 filediff "$1" "$2"
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69 fi