Mercurial > hg
annotate tests/pdiff @ 41722:37b33c34bf4f
templatekw: add a {negrev} keyword
Revision numbers are getting much maligned for two reasons: they are
too long in large repos and users get confused by their local-only
nature. It just occurred to me that negative revision numbers avoid
both of those problems. Since negative revision numbers change
whenever the repo changes, it's much more obvious that they are a
local-only convenience. Additionally, for the recent commits that we
usually care about the most, negative revision numbers are always near
zero.
This commit adds a negrev templatekw to more easily expose negative
revision numbers. It's not easy to reliably produce this output with
existing keywords due to hidden commits while at the same time
ensuring good performance.
author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
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date | Fri, 15 Feb 2019 14:43:31 -0500 |
parents | a2b55ee62803 |
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rev | line source |
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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 |