#!/usr/bin/env sh

libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@
sharedir=@CMAKE_INSTALL_PREFIX@/@SHARE_INSTALL_DIR@

HELP() {
  echo "Usage: `basename $0` [options] [clang++-options]"
  echo
  echo "Static analyzer for C++/Qt code"
  echo
  echo "Options:"
  echo "  --help             print program help"
  echo "  --version          print the program version"
  echo "  --list             print a list of all available checkers, arranged by level"
  echo "  --explain [regexp] print explanations for the checker matching a regexp"
  echo "or"
  echo "  --explain          print explanations for all checkers"
  echo
  echo "Any of the options above will print the requested information and then exit."
  echo
  echo "Convenience Options:"
  echo "  --qt4compat        Qt4 compatibility mode. useful for source code that can build with Qt4"
  echo "  (this is the same as passing \"-Xclang -plugin-arg-clang-lazy -Xclang qt4-compat\")"
  echo "  --qtdeveloper      Special option for building Qt5 itself resulting in fewer false positives"
  echo "  (this is the same as passing \"-Xclang -plugin-arg-clang-lazy -Xclang qt-developer\")"
  echo
  echo "All other options are passed directly to clang++ and handled from there."
  echo
  echo "See the clang++ manual for a list of the very large set of options available"
  echo
}

VERSION() {
    echo "clazy version: @CLAZY_PRINT_VERSION@"
    ${CLANGXX:-clang++} --version | head -1 | awk '{printf("clang++ Version: %s\n",$3)}'
}

PRLIST() {
  echo ""
  echo "Checks from level$1. $2:"
  ls -1 $sharedir/doc/clazy/level$1/README* | awk -F/ '{printf("    %s\n", $NF)}' | sed s/README-// | sed s/\.md$// | sort
}

PRINFO() {
  lst=`ls -1 $sharedir/doc/clazy/level*/README*$1* $sharedir/doc/clazy/manuallevel/README*$1*`
  for f in $lst
  do
    l=`echo $f | awk -F/ '{foo=NF-1; printf("    %s:%s\n", $foo,$NF)}'`
    level=`echo $l | cut -d: -f1`
    checker=`echo $l | cut -d: -f2 | sed s/README-// | sed s/\.md$//`
    echo "== Explanation for checker $checker ($level) =="
    cat $f
    echo
  done
}

if ( test $# -gt 0 -a "$1" = "--help" )
then
  HELP
  exit
fi

if ( test $# -gt 0 -a "$1" = "--version" )
then
  VERSION
  exit
fi

if ( test $# -gt 0 -a "$1" = "--list" )
then
  echo "List of available clazy checkers:"
  PRLIST 0 "Very stable checks, 100% safe, no false-positives"
  PRLIST 1 "Mostly stable and safe, rare false-positives"
  PRLIST 2 "Sometimes has false-positives (20-30%)"
  PRLIST 3 "Not always correct, high rate of false-positives"
  exit
fi

if ( test $# -gt 0 -a "$1" = "--explain" )
then
  shift
  PRINFO $@
  exit
fi

ExtraClangOptions=""
if ( test $# -gt 0 -a "$1" = "--qt4compat" )
then
  shift
  ExtraClangOptions="-Xclang -plugin-arg-clang-lazy -Xclang qt4-compat"
fi
if ( test $# -gt 0 -a "$1" = "--qtdeveloper" )
then
  shift
  ExtraClangOptions="-Xclang -plugin-arg-clang-lazy -Xclang qt-developer"
fi
if ( test $# -gt 0 -a "$1" = "--visit-implicit-code" )
then
  shift
  ExtraClangOptions="-Xclang -plugin-arg-clang-lazy -Xclang visit-implicit-code"
fi

ClangLazyLib=ClangLazy@CMAKE_SHARED_LIBRARY_SUFFIX@

if ( test -f "$libdir/$ClangLazyLib" )
then
    # find plugin libraries in install dir
    export LD_LIBRARY_PATH=$libdir:$LD_LIBRARY_PATH
    export DYLD_LIBRARY_PATH=$libdir:$DYLD_LIBRARY_PATH
elif ( test -f "$(dirname $0)/lib/$ClangLazyLib" )
then
    # find plugin libraries in build dir
    export LD_LIBRARY_PATH=$(dirname $0)/lib:$LD_LIBRARY_PATH
    export DYLD_LIBRARY_PATH=$(dirname $0)/lib:$DYLD_LIBRARY_PATH
fi

${CLANGXX:-clang++} -Qunused-arguments -Xclang -load -Xclang $ClangLazyLib -Xclang -add-plugin -Xclang clang-lazy $ExtraClangOptions "$@"