tests/test-glog

convert: readd --filemap

To handle merges correctly, this revision adds a filemap_source class
that wraps a converter_source and does the work necessary to calculate
the subgraph we're interested in.

The wrapped converter_source must provide a new getchangedfiles method
that, given a revision rev, and an index N, returns the list of files
that are different in rev and its Nth parent.

The implementation depends on the ability to skip some revisions and to
change the parents field of the commit objects that we returned earlier.

To make the conversion restartable, we assume the revisons in the
revmapfile are topologically sorted.

#!/bin/sh

# @  (34) head
# |
# | o  (33) head
# | |
# o |    (32) expand
# |\ \
# | o \    (31) expand
# | |\ \
# | | o \    (30) expand
# | | |\ \
# | | | o |  (29) regular commit
# | | | | |
# | | o | |    (28) merge zero known
# | | |\ \ \
# o | | | | |  (27) collapse
# |/ / / / /
# | | o---+  (26) merge one known; far right
# | | | | |
# +---o | |  (25) merge one known; far left
# | | | | |
# | | o | |  (24) merge one known; immediate right
# | | |\| |
# | | o | |  (23) merge one known; immediate left
# | |/| | |
# +---o---+  (22) merge two known; one far left, one far right
# | |  / /
# o | | |    (21) expand
# |\ \ \ \
# | o---+-+  (20) merge two known; two far right
# |  / / /
# o | | |    (19) expand
# |\ \ \ \
# +---+---o  (18) merge two known; two far left
# | | | |
# | o | |    (17) expand
# | |\ \ \
# | | o---+  (16) merge two known; one immediate right, one near right
# | | |/ /
# o | | |    (15) expand
# |\ \ \ \
# | o-----+  (14) merge two known; one immediate right, one far right
# | |/ / /
# o | | |    (13) expand
# |\ \ \ \
# +---o | |  (12) merge two known; one immediate right, one far left
# | | |/ /
# | o | |    (11) expand
# | |\ \ \
# | | o---+  (10) merge two known; one immediate left, one near right
# | |/ / /
# o | | |    (9) expand
# |\ \ \ \
# | o-----+  (8) merge two known; one immediate left, one far right
# |/ / / /
# o | | |    (7) expand
# |\ \ \ \
# +---o | |  (6) merge two known; one immediate left, one far left
# | |/ / /
# | o | |    (5) expand
# | |\ \ \
# | | o | |  (4) merge two known; one immediate left, one immediate right
# | |/|/ /
# | o / /  (3) collapse
# |/ / /
# o / /  (2) collapse
# |/ /
# o /  (1) collapse
# |/
# o  (0) root

set -e

commit()
{
    rev=$1
    msg=$2
    shift 2
    if [ "$#" -gt 0 ]; then
        hg debugsetparents "$@"
    fi
    echo $rev > $rev
    hg add $rev
    hg ci -d "$rev 0" -m "($rev) $msg"
}

echo "[extensions]" >> $HGRCPATH
echo "graphlog=" >> $HGRCPATH

echo % init
hg init repo

cd repo

echo % empty repo
hg glog

echo % building tree
commit 0 "root"
commit 1 "collapse" 0
commit 2 "collapse" 1
commit 3 "collapse" 2
commit 4 "merge two known; one immediate left, one immediate right" 1 3
commit 5 "expand" 3 4
commit 6 "merge two known; one immediate left, one far left" 2 5
commit 7 "expand" 2 5
commit 8 "merge two known; one immediate left, one far right" 0 7
commit 9 "expand" 7 8
commit 10 "merge two known; one immediate left, one near right" 0 6
commit 11 "expand" 6 10
commit 12 "merge two known; one immediate right, one far left" 1 9
commit 13 "expand" 9 11
commit 14 "merge two known; one immediate right, one far right" 0 12
commit 15 "expand" 13 14
commit 16 "merge two known; one immediate right, one near right" 0 1
commit 17 "expand" 12 16
commit 18 "merge two known; two far left" 1 15
commit 19 "expand" 15 17
commit 20 "merge two known; two far right" 0 18
commit 21 "expand" 19 20
commit 22 "merge two known; one far left, one far right" 18 21
commit 23 "merge one known; immediate left" 1 22
commit 24 "merge one known; immediate right" 0 23
commit 25 "merge one known; far left" 21 24
commit 26 "merge one known; far right" 18 25
commit 27 "collapse" 21
commit 28 "merge zero known" 1 26
commit 29 "regular commit" 0
commit 30 "expand" 28 29
commit 31 "expand" 21 30
commit 32 "expand" 27 31
commit 33 "head" 18
commit 34 "head" 32

echo % glog -q
hg glog -q

echo % glog
hg glog

echo % unused arguments
hg glog -q foo || echo failed