dxf-check

#!/bin/bash
# dwg -> dxf
# dxf -> dwg2
# teigha dwg2 -> dxf2
d="${1:-example_2000}"
b="$(basename "$d" .dwg)"
dir="$(dirname "$d")"
r="$(basename "$dir")"
case $dir in
    *test/test-data)   ;;
    *test/test-data/*) b="${b}_${r}" ;;
    *td)               ;;
    *td/*)             b="${b}_${r}" ;;
    .)                 ;;
    *)                 b="${b}_${r}" ;;
esac
case $r in
    20*)          ;;
    r9)       r=9 ;;
    r1[0234]) r=${r:1} ;;
    *)  case $b in
            *_20*)      r=${b:(-4)} ;;
            *_r9)       r=9         ;;
            *_r1[0234]) r=${b:(-2)} ;;
        esac
        ;;
esac

# first create a dwg log to compare against
./log -v3 "$d"
mv "$b.log" "$b.log.orig"
rm "./$b.dxf" "./$b.dwg" 2>/dev/null

./dxf -y -v4 "$d"
if [ -f "$b.dxf" ]; then
    mv "./$b.log" "$b.dwg2dxf.log"
    ./dwg -y -v4 "$b.dxf"
fi

if [ -f "$b.dwg" ]; then
    case $(uname) in
        Darwin)  TeighaFileConverter=/Applications/TeighaFileConverter.app/Contents/MacOS/TeighaFileConverter ;;
        Linux)   TeighaFileConverter=/usr/bin/TeighaFileConverter ;;
        Windows) TeighaFileConverter=TeighaFileConverter ;;
    esac
    if [ -x $TeighaFileConverter ]; then
        echo TeighaFileConverter "." "test" "ACAD$r" DXF 0 1 "$b.dwg"
        $TeighaFileConverter "." "test" "ACAD$r" DXF 0 1 "$b.dwg"
        mv "test/$b.dxf.err" "$b.dxf.err"
        cat "$b.dxf.err"
    else
        rm "$b.dxf.err" 2>/dev/null
        echo TeighaFileConverter not installed
    fi

    ./log -v3 "$b.dwg"
    log1="$b.log.orig"
    log2="$b.log"
    echo diff -bu "log1" "$log2"
    diff -I '^-(objref|found:)' -bu "$log1" "$log2"

    test -f "$b.dxf.err" && cat "$b.dxf.err"

    if [ -f "$log1" ] && [ -f "$log2" ]; then
        # Really interesting is the Section BLOCKS here. vs BLOCK_HEADER
        # We dont write unstable entities yet. WIPEOUT is converted to POINT in encode, but skipped at out_dxf
        grep -E '^Add entity' "$log1" | \
            grep -E -v 'entity (WIPEOUT|ARC_DIMENSION|HELIX|SECTIONOBJECT|UNKNOWN_ENT)' >"$log1.tmp"
        grep -E '^Add entity' "$log2" >"$log2.tmp"
        if diff -bu0 "$log1.tmp" "$log2.tmp" >/dev/null 2>/dev/null; then
            echo entities roundtrip ok
            rm "$log1.tmp" "$log2.tmp" 2>/dev/null
        else
            c1=$(grep -c entity "$log1.tmp")
            c2=$(grep -c entity "$log2.tmp")
            if [ "$c1" = "$c2" ]; then
                echo entities roundtrip in different order
                diff -I '^-(objref|found:)' -bu0 <(perl -lpe's/ \[.\d+\]//' "$log1.tmp" | sort -u) \
                          <(perl -lpe's/ \[.\d+\]//' "$log2.tmp" | sort -u)
            else
                echo "$b roundtrip failed, $c1 vs $c2 entities"
                diff -I '^-(objref|found:)' -bu0 "$log1.tmp" "$log2.tmp" | grep -v '^@@'
            fi
        fi
    fi
fi