upstream/mercurial-mirror Files · tests/test-cat.t

revisions: allow "x123" to refer to nodeid prefix "123"...

revisions: allow "x123" to refer to nodeid prefix "123" When resolving "123" to a revision, we try to interpret it as revnum before we try to interpret it as a nodeid hex prefix. This can lead to the shortest valid prefix being longer than necessary. This patch lets us write such nodeids in a shorter form by prefixing them with "x" instead of adding more hex digits until they're longer than the longest decimal revnum. On my hg repo with almost 69k revisions, turning this feature on saves on average 0.4% on the average nodeid length. That clearly doesn't justify this patch. However, it becomes more usefule when combined with the earlier patches in this series that let you disambiguate nodeid prefixes within a configured revset. Note that we attempt to resolve symbols as nodeid prefixes after we've exhausted all other posibilities, so this is a backwards compatible change (only queries that would previously fail may now succeed). I've still hidden this feature behind an experiemntal config option so we can roll it back if needed. Differential Revision: https://phab.mercurial-scm.org/D4041

Yuya Nishihara - - Load All Authors

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        $ hg init

        $ echo 0 > a

        $ echo 0 > b

        $ hg ci -A -m m

        adding a

        adding b

        $ hg rm a

        $ hg cat a

        0

        $ hg cat --decode a # more tests in test-encode

        0

        $ echo 1 > b

        $ hg ci -m m

        $ echo 2 > b

        $ hg cat -r 0 a

        0

        $ hg cat -r 0 b

        0

        $ hg cat -r 1 a

        a: no such file in rev 7040230c159c

        [1]

        $ hg cat -r 1 b

        1

      Test multiple files

        $ echo 3 > c

        $ hg ci -Am addmore c

        $ hg cat b c

        1

        3

        $ hg cat .

        1

        3

        $ hg cat . c

        1

        3

      Test fileset

        $ hg cat 'set:not(b) or a'

        3

        $ hg cat 'set:c or b'

        1

        3

        $ mkdir tmp

        $ hg cat --output tmp/HH_%H c

        $ hg cat --output tmp/RR_%R c

        $ hg cat --output tmp/h_%h c

        $ hg cat --output tmp/r_%r c

        $ hg cat --output tmp/%s_s c

        $ hg cat --output tmp/%d%%_d c

        $ hg cat --output tmp/%p_p c

        $ hg log -r . --template "{rev}: {node|short}\n"

        2: 45116003780e

        $ find tmp -type f | sort

        tmp/.%_d

        tmp/HH_45116003780e3678b333fb2c99fa7d559c8457e9

        tmp/RR_2

        tmp/c_p

        tmp/c_s

        tmp/h_45116003780e

        tmp/r_2

      Test template output

        $ hg --cwd tmp cat ../b ../c -T '== {path} ({abspath}) r{rev} ==\n{data}'

        == ../b (b) r2 ==

        1

        == ../c (c) r2 ==

        3

        $ hg cat b c -Tjson --output -

        [

         {

          "abspath": "b",

          "data": "1\n",

          "path": "b"

         },

         {

          "abspath": "c",

          "data": "3\n",

          "path": "c"

         }

        ]

        $ hg cat b c -Tjson --output 'tmp/%p.json'

        $ cat tmp/b.json

        [

         {

          "abspath": "b",

          "data": "1\n",

          "path": "b"

         }

        ]

        $ cat tmp/c.json

        [

         {

          "abspath": "c",

          "data": "3\n",

          "path": "c"

         }

        ]

      Test working directory

        $ echo b-wdir > b

        $ hg cat -r 'wdir()' b

        b-wdir

      Environment variables are not visible by default

        $ PATTERN='t4' hg log -r '.' -T "{ifcontains('PATTERN', envvars, 'yes', 'no')}\n"

        no

      Environment variable visibility can be explicit

        $ PATTERN='t4' hg log -r '.' -T "{envvars % '{key} -> {value}\n'}" \

        >                 --config "experimental.exportableenviron=PATTERN"

        PATTERN -> t4

      Test behavior of output when directory structure does not already exist

        $ mkdir foo

        $ echo a > foo/a

        $ hg add foo/a

        $ hg commit -qm "add foo/a"

        $ hg cat --output "output/%p" foo/a

        $ cat output/foo/a

        a

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				$ hg init
				$ echo 0 > a
				$ echo 0 > b
				$ hg ci -A -m m
				adding a
				adding b
				$ hg rm a
				$ hg cat a
				0
				$ hg cat --decode a # more tests in test-encode
				0
				$ echo 1 > b
				$ hg ci -m m
				$ echo 2 > b
				$ hg cat -r 0 a
				0
				$ hg cat -r 0 b
				0
				$ hg cat -r 1 a
				a: no such file in rev 7040230c159c
				[1]
				$ hg cat -r 1 b
				1

				Test multiple files

				$ echo 3 > c
				$ hg ci -Am addmore c
				$ hg cat b c
				1
				3
				$ hg cat .
				1
				3
				$ hg cat . c
				1
				3

				Test fileset

				$ hg cat 'set:not(b) or a'
				3
				$ hg cat 'set:c or b'
				1
				3

				$ mkdir tmp
				$ hg cat --output tmp/HH_%H c
				$ hg cat --output tmp/RR_%R c
				$ hg cat --output tmp/h_%h c
				$ hg cat --output tmp/r_%r c
				$ hg cat --output tmp/%s_s c
				$ hg cat --output tmp/%d%%_d c
				$ hg cat --output tmp/%p_p c
				$ hg log -r . --template "{rev}: {node\|short}\n"
				2: 45116003780e
				$ find tmp -type f \| sort
				tmp/.%_d
				tmp/HH_45116003780e3678b333fb2c99fa7d559c8457e9
				tmp/RR_2
				tmp/c_p
				tmp/c_s
				tmp/h_45116003780e
				tmp/r_2

				Test template output

				$ hg --cwd tmp cat ../b ../c -T '== {path} ({abspath}) r{rev} ==\n{data}'
				== ../b (b) r2 ==
				1
				== ../c (c) r2 ==
				3

				$ hg cat b c -Tjson --output -
				[
				{
				"abspath": "b",
				"data": "1\n",
				"path": "b"
				},
				{
				"abspath": "c",
				"data": "3\n",
				"path": "c"
				}
				]

				$ hg cat b c -Tjson --output 'tmp/%p.json'
				$ cat tmp/b.json
				[
				{
				"abspath": "b",
				"data": "1\n",
				"path": "b"
				}
				]
				$ cat tmp/c.json
				[
				{
				"abspath": "c",
				"data": "3\n",
				"path": "c"
				}
				]

				Test working directory

				$ echo b-wdir > b
				$ hg cat -r 'wdir()' b
				b-wdir

				Environment variables are not visible by default

				$ PATTERN='t4' hg log -r '.' -T "{ifcontains('PATTERN', envvars, 'yes', 'no')}\n"
				no

				Environment variable visibility can be explicit

				$ PATTERN='t4' hg log -r '.' -T "{envvars % '{key} -> {value}\n'}" \
				> --config "experimental.exportableenviron=PATTERN"
				PATTERN -> t4

				Test behavior of output when directory structure does not already exist

				$ mkdir foo
				$ echo a > foo/a
				$ hg add foo/a
				$ hg commit -qm "add foo/a"
				$ hg cat --output "output/%p" foo/a
				$ cat output/foo/a
				a