revset: extract parsing logic out of formatspec
We want to be able to perform better handling of some input when running
revset (eg: `repo.revs("%ld", somerevs)`). The first step is to be able to
access some of the parsed content before it gets substituted. There are many
possible different substitutions, we'll add support for them gradually.
In this changeset we support none, we just split some logic in a sub function
as a preparatory step.
Test applying context diffs
$ cat > writepatterns.py <<EOF
> import sys
>
> path = sys.argv[1]
> lasteol = sys.argv[2] == '1'
> patterns = sys.argv[3:]
>
> fp = open(path, 'wb')
> for i, pattern in enumerate(patterns):
> count = int(pattern[0:-1])
> char = pattern[-1].encode('utf8') + b'\n'
> if not lasteol and i == len(patterns) - 1:
> fp.write((char*count)[:-1])
> else:
> fp.write(char*count)
> fp.close()
> EOF
$ cat > cat.py <<EOF
> import sys
> from mercurial import pycompat
> from mercurial.utils import stringutil
> pycompat.stdout.write(b'%s\n'
> % stringutil.pprint(open(sys.argv[1], 'rb').read()))
> EOF
Initialize the test repository
$ hg init repo
$ cd repo
$ "$PYTHON" ../writepatterns.py a 0 5A 1B 5C 1D
$ "$PYTHON" ../writepatterns.py b 1 1A 1B
$ "$PYTHON" ../writepatterns.py c 1 5A
$ "$PYTHON" ../writepatterns.py d 1 5A 1B
$ hg add
adding a
adding b
adding c
adding d
$ hg ci -m addfiles
Add file, missing a last end of line
$ hg import --no-commit - <<EOF
> *** /dev/null 2010-10-16 18:05:49.000000000 +0200
> --- b/newnoeol 2010-10-16 18:23:26.000000000 +0200
> ***************
> *** 0 ****
> --- 1,2 ----
> + a
> + b
> \ No newline at end of file
> *** a/a Sat Oct 16 16:35:51 2010
> --- b/a Sat Oct 16 16:35:51 2010
> ***************
> *** 3,12 ****
> A
> A
> A
> ! B
> C
> C
> C
> C
> C
> ! D
> \ No newline at end of file
> --- 3,13 ----
> A
> A
> A
> ! E
> C
> C
> C
> C
> C
> ! F
> ! F
>
> *** a/b 2010-10-16 18:40:38.000000000 +0200
> --- /dev/null 2010-10-16 18:05:49.000000000 +0200
> ***************
> *** 1,2 ****
> - A
> - B
> --- 0 ----
> *** a/c Sat Oct 16 21:34:26 2010
> --- b/c Sat Oct 16 21:34:27 2010
> ***************
> *** 3,5 ****
> --- 3,7 ----
> A
> A
> A
> + B
> + B
> *** a/d Sat Oct 16 21:47:20 2010
> --- b/d Sat Oct 16 21:47:22 2010
> ***************
> *** 2,6 ****
> A
> A
> A
> - A
> - B
> --- 2,4 ----
> EOF
applying patch from stdin
$ hg st
M a
M c
M d
A newnoeol
R b
What's in a
$ "$PYTHON" ../cat.py a
'A\nA\nA\nA\nA\nE\nC\nC\nC\nC\nC\nF\nF\n'
$ "$PYTHON" ../cat.py newnoeol
'a\nb'
$ "$PYTHON" ../cat.py c
'A\nA\nA\nA\nA\nB\nB\n'
$ "$PYTHON" ../cat.py d
'A\nA\nA\nA\n'
$ cd ..