Split KiCad schematic library into multiple files

split-kicad-lib.sh

################################################################################
#                                                                              #
# Split KiCad EESchema library file into one file per part                     #
#                                                                              #
# Copyright (C) 2016  Daniel Gröber <dxld@darkboxed.org>                       #
#                                                                              #
# Copying and distribution of this file, with or without modification,         #
# are permitted in any medium without royalty provided the copyright           #
# notice and this notice are preserved.  This file is offered as-is,           #
# without any warranty.                                                        #
#                                                                              #
# Usage: sh split-kicad-lib.sh LIB OUTPUT_DIR                                  #
#                                                                              #
# Example:                                                                     #
#     $ mkdir klib/                                                            #
#     $ sh split-kicad-lib.sh stm32.lib klib/                                  #
#                                                                              #
# Now klib/ will contain one file per part defined in stm32.lib and symlinks   #
# for any aliases the parts define.                                            #
#                                                                              #
################################################################################
LIB=$1; shift
ODIR=$1; shift

if [ -z "$LIB" -o -z "$ODIR" ]; then
    echo "Usage: $0 LIB OUTPUT_DIR"
    exit 1
fi

cat "$LIB" | tr -d '\r' | awk \
'
BEGIN { file = ""; };

/^DEF\>/ {
    file = $2;
    print "" > "'"$ODIR"'/" file;
};

/^ENDDEF\>/ {
    file = "";
};

file && /^ALIAS\>/ {

    system("ln -s " file " '"$ODIR"'/" $2);
};

file != "" { print $0 >> "'"$ODIR"'/" file }
'