#!/bin/bash
#===============================================================================
# check a java classpath for duplicate classes
#===============================================================================

# possible usage exit
[ $# -ne 1 ] && {
    echo >&2 "usage: $(basename "$0") classpath .."
    exit 1
}

# main pipeline
echo "$1" | tr ':;' '\n' |

while IFS=$'\n' read -r part; do
    [ -n "$part" ] || continue;
    [ -e "$part" ] || { echo >&2 "cannot find $part"; continue; }
    [ -r "$part" ] || { echo >&2 "cannot read $part"; continue; }
    echo >&2 "checking $part"
    echo -en "#\t"
    echo "$part"
    if [ -f "$part" ]; then
         unzip -l "$part" | 
         awk 'NR > 3 && $4 != "" && $4 !~ "/$" {print $4}'
    elif [ -d "$part" ]; then
        find "$part" -type f -printf "%P\n"
    fi
done |

awk '
    BEGIN {
        FS = "\t"
    }
    $1 == "#" {
        part = $2
        next
    }
    {
        found[$1] = found[$1] "\t" part
        count[$1]++
    }
    END {
        for (file in found) {
            if (count[file] > 1)
            print file found[file]
        }       
    }
' |

sort -u

#===============================================================================
#:mode=shellscript:noTabs=false:tabSize=4:indentSize=4:lineSeparator=\n: