# Copyright (c) P.J.Gawthrop, 1996.

###############################################################
## Version control history
###############################################################
## $Id$
## $Log$
## Revision 1.33  1998/08/10 15:51:06  peterg
## Comments may now be prefaced by # as well as %
##
## Revision 1.32  1998/07/27 20:30:03  peterg
## *** empty log message ***
##
## Revision 1.31  1998/04/16 13:18:13  peterg
## Now ignores spurious ports (in lbl but not Figure \ref{) but gives
## warning
##

#             field 1 = 4
#		fields 12 and 13 are the coordinates
#		field 14 is the type:name string terminated by \001
# To prevent text being confused with components, components consist
# of alphanumeric characters and : and _ only.
# The lbl file is used to sort the components.
##############################################################

function modulo10(x) {
  return x-int(x/10)*10
    }

function exact_match(name1, name2) {
  return ((match(name1,name2)>0)&&(length(name1)==length(name2)))
    }

function write_component(i) {
    name = label[i,1];

# The text string is field 14 onwards
  str = $14; 
  for (i=15; i<=NF; i++) {
    str = sprintf("%s %s", str, $i)
      }

# The depth is field 4
  depth = $4; 
  depth = modulo10($4);

# It is terminated by \001 - so delete this termination
  str = substr(str,1,length(str)-4);

# A component string contains only alphanumeric  _ and :
  isa_plain_component = match(str, component_regexp)==0;
# It must also be specified at depth 0
# It must also be specified at depth 0 (modulo 10)
  isa_plain_component = isa_plain_component && (depth==0);

# A port is a string within []
  isa_port = (match(str, port_regexp)>0)

# It must also be specified at depth 0
  isa_port = isa_port && (depth==0);

	label[i_label,3] = args
	  }
    }

# Unnamed component
    if (named_component==0) {
      i_name++;
      name = sprintf("%1.0f", i_name);
      name = sprintf("mtt%i", i_name);
      type = str;
      i_label++;
      label[i_label,1] = name;
      label[i_label,2] = default_cr;
      label[i_label,3] = default_args
	}

}
}

function process_fig() {
# Test for the fig format first line and data line
  data_line = (match($1,data_symbol)>0);
  first_line = (data_line==0)&&(NF>min_line_length);

#Process firstline
  if (first_line) {
    object = $1;
    sub_type = $2;
    style = $3;
    zero_depth = (($7==0)&&(object=polyline)) || (($4==0)&&(object=text));
    zero_depth = ((modulo10($7)==0)&&(object==polyline)) || ((modulo10($4)==0)&&(object==text))
    f_arrow = ($14==1)&&(object=polyline);
    b_arrow = ($15==1)&&(object=polyline);
    arrow = f_arrow||b_arrow;
    arg_count = 0;
  }

#Process text