# $Id:$
#
# Copyright (C) 2003-2008  The Xastir Group
#
# This dbfawk file is used to map arbitrary dbf data that accompanies
# a shapefile into Xastir canoncical values of:
#   key     - search key
#   lanes   - width of feature (usually a road but applies to rivers, etc. too)
#   color   - color to draw the road
#   name    - name of the road for labels
#   filled  - whether a polygon is drawn filled or not
#   fill_color - color to fill polygon with
#   pattern - line pattern for road, river, etc. (0 - solid; 1 - dash; 2 - double dash)
#   display_level - highest zoom level at which to display the feature
#   label_level - highest zoom level at which to display the label
#   symbol  - 3 char 'TIO': table, ID, overlay
# NOTE: This file format is modeled after awk but is nowhere near awk
#  compatible.
#
# This file is used to map OpenStreetMap sourced Shapefiles
# specifically the roads.dbf file
#
# BEGIN is called once per dbf file which contains multiple records.
BEGIN {
# dbfinfo is the "signature" of the dbf file listing the column names in order.
# dbfinfo should match the dbf file that we say this dbfawk file goes with.
dbfinfo="osm_id:name:ref:type:oneway:maxspeed";
#dbffields is which of the above fields we actually want to look at.
# No point reading dbffields that are not looked at further.
dbffields="name:type";
}

# BEGIN_RECORD is called once per dbf record which contains multiple fields.
# Use this rule to re-initialize variables between records.
# use color 11 to highlight stuff that isn't properly mapped.
BEGIN_RECORD {key=""; lanes=1; color=8; fill_color=11; name=""; filled=0; pattern=0; display_level=8192; label_level=32; label_color=8; font_size=0; symbol=""; fill_style=0 }

# per-field rules are applied to the dbffields that are read from each record.# key: set the search key to be the Tiger/Line ID.  Not currently used.
/^osm_id=(.*)$/ {key=$1; next}
# name: concatenate FEDIRP (direction prefix), FENAME (name), 
#   FETYPE (type: Rd, Ln, Pky, etc.) and FEDIRS (direction suffix).
# also abbreviate United States Highway to US, etc.
/^name=(.*)$/ {name="$(name)$1"; next}
# Census Feature Class Codes are used to set lanes, color, display_level, etc.
/^type=motorway/ {lanes=4; color=4; label_level=512; font_size=3; next}
/^type=trunk/ {lanes=3; color=8; label_level=256; font_size=2; next}
/^type=primary/ {lanes=2; color=8; label_level=128; font_size=1; next}
/^type=secondary/ {lanes=2; display_level=128; font_size=1; next}
/^type=tertiary/ {display_level=128; label_level=16; color=66; lanes=1; next}
/^type=residential/ {lanes=1; color=44; display_level=32; label_level=16; font_size=1; next}
/^type=service/ {lanes=1; color=12; display_level=64; next}
/^type=unclassified/ {lanes=1; color=8; pattern=2; display_level=64; next}
/^type=unsurfaced/ {lanes=1; color=40; pattern=2; display_level=64; next}
/^type=(.*)$/ {lanes=1; color=105; display_level=16; next}
# just a demo of the END_RECORD and END rules:
#END_RECORD {name="$name ($key)";}
#END {}