name: appver
author:  Miroslav Safr <miroslav.safr@gmail.com> 
web: http://safrm.net/projects/appver/
version:
description: multiplatformal version number/version time helper

content: 
 appver .................. script to pass or export git version in given format
 install.sh .............. executes installation to /urs/bin dir
 
usage:
. appver .............. export version variables to current terminal e.g. APP_FULL_VERSION_TAG
appver ................ print version variables to stdout
appver 1.x.x .......... for packaging builds (without git tree) can be version strings passwd by argument

example:
<my-project-dir> $ . appver 
APP_FULL_VERSION_TAG=0.0.1
APP_SHORT_VERSION_TAG=0.0.1
APP_BUILD_DATE=20120510_1312

<my-project-dir> $ export | grep APP_
declare -x APP_BUILD_DATE="20120510_1312"
declare -x APP_FULL_VERSION_AND_DATE="0.0.1 (20120510_1312)"
declare -x APP_FULL_VERSION_TAG="0.0.1"
declare -x APP_SHORT_VERSION_TAG="0.0.1"


usage in scripts without dependency:
#automatic version 
if command -v appver &>/dev/null ; then . appver ; else APP_SHORT_VERSION=NA ; APP_FULL_VERSION_TAG=NA ; APP_BUILD_DATE=`date +'%Y%m%d_%H%M'` ; fi

qmake 2x usage:
#appver, win/lin version system
APP_FULL_VERSION_TAG=NA
APP_SHORT_VERSION_TAG=NA
unix {
  exists( /usr/bin/appver ) {
    #APP_BUILD_DATE=$$system(/usr/bin/appver | grep APP_BUILD_DATE | awk -F= '{print $2}')
    #APP_FULL_VERSION_TAG=$$system(/usr/bin/appver | grep APP_FULL_VERSION_TAG | awk -F= '{print $2}')
    #APP_SHORT_VERSION_TAG=$$system(/usr/bin/appver | grep APP_SHORT_VERSION_TAG | awk -F= '{print $2}')
    system(/usr/bin/appver > ./appver.pri)
    include(./appver.pri)
  } else {
    APP_BUILD_DATE=$$system(date +'\"%Y%m%d_%H%M\"')
    APP_FULL_VERSION_TAG=$$system(git describe --tags  --dirty=* 2> /dev/null)
    APP_SHORT_VERSION_TAG=$$system(git describe --tags --abbrev=0 2> /dev/null)
  }
}
win32 {
  APP_BUILD_DATE=$$system(echo \"%date:~9,4%%date:~6,2%%date:~3,2%_%time:~0,2%%time:~3,2%\")
  exists("C:\\progs\\Git\\bin\\sh.exe") {
      APP_FULL_VERSION_TAG=$$system("C:\\progs\\Git\\bin\\sh.exe" -c \"/bin/git describe --tags  --dirty=* 2> /dev/null  \")
      APP_SHORT_VERSION_TAG=$$system("C:\\progs\\Git\\bin\\sh.exe" -c \"/bin/git describe --tags --abbrev=0 2> /dev/null  \")
   }
}
message("APP_BUILD_DATE = " $$APP_BUILD_DATE)
DEFINES += APP_DATE=\\\"$$APP_BUILD_DATE\\\"
message("APP_FULL_VERSION_TAG = " $$APP_FULL_VERSION_TAG)
DEFINES += APP_FULL_VERSION_TAG=\\\"$$APP_FULL_VERSION_TAG\\\"
DEFINES += APP_SHORT_VERSION_TAG=\\\"$$APP_SHORT_VERSION_TAG\\\"
message("APP_SHORT_VERSION_TAG = " $$APP_SHORT_VERSION_TAG)


releasing packaging:
   $ appver 1.0.2
   APP_FULL_VERSION_TAG=1.0.2
   APP_SHORT_VERSION_TAG=1.0.2
   APP_BUILD_DATE=20140203_1618