view contrib/buildrpm @ 18792:10669e24eb6c

completion: add a debugpathcomplete command

The bash_completion code uses "hg status" to generate a list of
possible completions for commands that operate on files in the
working directory. In a large working directory, this can result
in a single tab-completion being very slow (several seconds) as a
result of checking the status of every file, even when there is no
need to check status or no possible matches.

The new debugpathcomplete command gains performance in a few simple
ways:

* Allow completion to operate on just a single directory. When used
  to complete the right commands, this considerably reduces the
  number of completions returned, at no loss in functionality.

* Never check the status of files. For completions that really must
  know if a file is modified, it is faster to use status:

  hg status -nm 'glob:myprefix**'

Performance:

Here are the commands used by bash_completion to complete, run in
the root of the mozilla-central working dir (~77,000 files) and
another repo (~165,000 files):

All "normal state" files (used by e.g. remove, revert):

                            mozilla    other
  status -nmcd 'glob:**'       1.77     4.10 sec
  debugpathcomplete -f -n      0.53     1.26
  debugpathcomplete -n         0.17     0.41

("-f" means "complete full paths", rather than the current directory)

Tracked files matching "a":

                            mozilla    other
  status -nmcd 'glob:a**'      0.26     0.47
  debugpathcomplete -f -n a    0.10     0.24
  debugpathcomplete -n a       0.10     0.22

We should be able to further improve completion performance once
the critbit work lands. Right now, our performance is limited by
the need to iterate over all keys in the dirstate.

#!/bin/sh
#
# Build a Mercurial RPM in place.
#
# Tested on
# - Fedora 8 (with docutils 0.5)
# - Fedora 11
# - OpenSuse 11.2

cd "`dirname $0`/.."
HG="$PWD/hg"
PYTHONPATH="$PWD/mercurial/pure"
export PYTHONPATH

specfile=contrib/mercurial.spec
if [ ! -f $specfile ]; then
    echo "Cannot find $specfile!" 1>&2
    exit 1
fi

if [ ! -d .hg ]; then
    echo 'You are not inside a Mercurial repository!' 1>&2
    exit 1
fi

if $HG id -i | grep '+$' > /dev/null 2>&1; then
    echo -n "Your local changes will NOT be in the RPM. Continue [y/n] ? "
    read answer
    if echo $answer | grep -iv '^y'; then
        exit
    fi
fi

rpmdir="$PWD/rpmbuild"

rm -rf $rpmdir
mkdir -p $rpmdir/SOURCES $rpmdir/SPECS $rpmdir/RPMS $rpmdir/SRPMS $rpmdir/BUILD

# make setup.py build the version string
python setup.py build_py -c -d .
hgversion=`$HG version | sed -ne 's/.*(version \(.*\))$/\1/p'`

if echo $hgversion | grep -- '-' > /dev/null 2>&1; then
    # nightly build case, version is like 1.3.1+250-20b91f91f9ca
    version=`echo $hgversion | cut -d- -f1`
    release=`echo $hgversion | cut -d- -f2 | sed -e 's/+.*//'`
else
    # official tag, version is like 1.3.1
    version=`echo $hgversion | sed -e 's/+.*//'`
    release='0'
fi

$HG archive -t tgz $rpmdir/SOURCES/mercurial-$version.tar.gz
rpmspec=$rpmdir/SPECS/mercurial-$version.spec

sed -e "s,^Version:.*,Version: $version," \
    -e "s,^Release:.*,Release: $release," \
    $specfile > $rpmspec

echo >> $rpmspec
echo "%changelog" >> $rpmspec

if echo $version | grep '+' > /dev/null 2>&1; then
    latesttag="`echo $version | sed -e 's/+.*//'`"
    $HG log -r .:"$latesttag" -fM \
        --template '{date|hgdate}\t{author}\t{desc|firstline}\n' | python -c '
import sys, time

def datestr(date, format):
    return time.strftime(format, time.gmtime(float(date[0]) - date[1]))

changelog = []
for l in sys.stdin.readlines():
    tok = l.split("\t")
    hgdate = tuple(int(v) for v in tok[0].split())
    changelog.append((datestr(hgdate, "%F"), tok[1], hgdate, tok[2]))
prevtitle = ""
for l in sorted(changelog, reverse=True):
    title = "* %s %s" % (datestr(l[2], "%a %b %d %Y"), l[1])
    if prevtitle != title:
        prevtitle = title
        print
        print title
    print "- %s" % l[3].strip()
' >> $rpmspec

else

    $HG log \
         --template '{date|hgdate}\t{author}\t{desc|firstline}\n' \
         .hgtags | python -c '
import sys, time

def datestr(date, format):
    return time.strftime(format, time.gmtime(float(date[0]) - date[1]))

for l in sys.stdin.readlines():
    tok = l.split("\t")
    hgdate = tuple(int(v) for v in tok[0].split())
    print "* %s %s\n- %s" % (datestr(hgdate, "%a %b %d %Y"), tok[1], tok[2])
' >> $rpmspec

fi

rpmbuild --define "_topdir $rpmdir" -ba $rpmspec --clean
if [ $? = 0 ]; then
    echo
    echo "Packages are in $rpmdir:"
    ls -l $rpmdir/*RPMS/*
fi