Ticket #4: gdc_undefsymbol_workaround.sh

#!/bin/bash

#GDC codegen workaround:
#Add GDC_BUG_WORKAROUND as an undefined member to each enum with initialized
#members on the first line inside its scope.

SRCDIR="`pwd`/src"

function ParseFile()
{
    echo "Parsing: $1"
    #Magic! ...Or not. This won't work for all cases because there can be comments after
    #the bracket '{', and in fact, there are. So close!
    #sed -i -e '/enum .*/ { n; s/{/&/; t a; b; :a; n; s/.* = .*/\tGDC_BUG_WORKAROUND,\n&/ }' "$1"
    #Ah, this is more like it:
    sed -i -re '
        /enum .*/ {
                    n;
                    s/\{/&/;
                    t a;
                    b;
                    :a;
                        #We need to check for comment blocks here,
                        #and skip them
                        :com;
                        n;
                        /(^(\/\*|\/\+)|^[[:blank:]]*(\/\*|\/\+))/,/(\*\/|\+\/)/ b com;
                        /(^\/\/|^[[:blank:]]*\/\/)/ b com;
                        s/.* = .*/\tGDC_BUG_WORKAROUND,\n&/;
                   }' "$1"
}

function ScanDir()
{
    local previousdir="`pwd`"

    cd "$1"
    for entry in $( ls -b ); do
        if [ -f "${entry}" ]; then
            ParseFile "$1"/"${entry}"
        elif [ -d "${entry}" ]; then
            ScanDir "$1"/"${entry}"
        fi
    done

    cd "${previousdir}"
}

echo
echo "The following script will parse all your D source files and hopefully"
echo "workaround the awful GDC bug that keeps preventing gtkD apps from linking."
echo "NO backups will be made. You now have 5 seconds to abort."
sleep 5
echo
echo "Source directory: ${SRCDIR}"
echo

ScanDir "${SRCDIR}"

echo "Done!"