buildrpm: introduce --prepare for preparing without actually building rpms

contrib/buildrpm

@@ -1,103 +1,122 b''
 #!/bin/sh -e
 #
 # Build a Mercurial RPM from the current repo
 #
 # Tested on
 # - Fedora 20
 # - CentOS 5
 # - centOS 6
 
+BUILD=1
+while [ "$1" ]; do
+    case "$1" in
+    --prepare )
+        shift
+        BUILD=
+        ;;
+    * )
+        echo "Invalid parameter $1!" 1>&2
+        exit 1
+        ;;
+    esac
+done
+
 cd "`dirname $0`/.."
 
 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
 
 # build local hg and use it
 python setup.py build_py -c -d .
 HG="$PWD/hg"
 PYTHONPATH="$PWD/mercurial/pure"
 export PYTHONPATH
 
 rpmdir="$PWD/rpmbuild"
 
 rm -rf $rpmdir
 mkdir -p $rpmdir/SOURCES $rpmdir/SPECS $rpmdir/RPMS $rpmdir/SRPMS $rpmdir/BUILD
 
 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-$release.tar.gz
 rpmspec=$rpmdir/SPECS/mercurial.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 $rpmdir/*RPMS/*
+if [ "$BUILD" ]; then
+    rpmbuild --define "_topdir $rpmdir" -ba $rpmspec --clean
+    if [ $? = 0 ]; then
+        echo
+        echo "Built packages for $version-$release:"
+        find $rpmdir/*RPMS/ -type f -newer $rpmspec
+    fi
+else
+    echo "Prepared sources for $version-$release $rpmspec are in $rpmdir/SOURCES/ - use like:"
+    echo "rpmbuild --define '_topdir $rpmdir' -ba $rpmspec --clean"
 fi