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+#!/usr/bin/awk -f
+###=====================================================================
+### Read two Adobe Font Metric files, and compute tables of the
+### differences in character repertoire, declared widths (WX), and
+### bounding boxes.
+###
+### Usage:
+### awk -f afmdiff.awk file1.afm file2.afm
+###
+### Author:
+### Nelson H. F. Beebe
+### Center for Scientific Computing
+### University of Utah
+### Department of Mathematics, 322 INSCC
+### 155 S 1400 E RM 233
+### Salt Lake City, UT 84112-0090
+### USA
+### Email: beebe@math.utah.edu, beebe@acm.org, beebe@computer.org,
+### beebe@ieee.org (Internet)
+### WWW URL: http://www.math.utah.edu/~beebe
+### Telephone: +1 801 581 5254
+### FAX: +1 801 585 1640, +1 801 581 4148
+###
+########################################################################
+########################################################################
+########################################################################
+### ###
+### awkdiff.awk: compare two Adobe Font Metric files ###
+### ###
+### Copyright (C) 2000 Nelson H. F. Beebe ###
+### ###
+### This program is covered by the GNU General Public License (GPL), ###
+### version 2 or later, available as the file COPYING in the program ###
+### source distribution, and on the Internet at ###
+### ###
+### ftp://ftp.gnu.org/gnu/GPL ###
+### ###
+### http://www.gnu.org/copyleft/gpl.html ###
+### ###
+### This program is free software; you can redistribute it and/or ###
+### modify it under the terms of the GNU General Public License as ###
+### published by the Free Software Foundation; either version 2 of ###
+### the License, or (at your option) any later version. ###
+### ###
+### This program is distributed in the hope that it will be useful, ###
+### but WITHOUT ANY WARRANTY; without even the implied warranty of ###
+### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ###
+### GNU General Public License for more details. ###
+### ###
+### You should have received a copy of the GNU General Public ###
+### License along with this program; if not, write to the Free ###
+### Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, ###
+### MA 02111-1307 USA ###
+### ###
+### This program may also be distributed as part of AFPL ###
+### Ghostscript, under the terms of the Aladdin Free Public License ###
+### (the "License"). ###
+### ###
+### Every copy of AFPL Ghostscript must include a copy of the ###
+### License, normally in a plain ASCII text file named PUBLIC. The ###
+### License grants you the right to copy, modify and redistribute ###
+### AFPL Ghostscript, but only under certain conditions ###
+### described in the License. Among other things, the License ###
+### requires that the copyright notice and this notice be preserved ###
+### on all copies. ###
+### ###
+########################################################################
+########################################################################
+########################################################################
+#
+# [29-Apr-2000]
+#=======================================================================
+
+/^FontName/ { FontName[++NFontName] = $2 }
+
+
+/^C / {
+ if (NFontName == 1)
+ CharName1[$8]++
+ if (NFontName == 2)
+ CharName2[$8]++
+ }
+
+
+/^C / {
+ name = $8
+ if (name in WX)
+ {
+ if (WX[name] != $5)
+ WXDIFF[name] = WX[name] - $5
+ }
+ else
+ WX[name] = $5
+ }
+
+
+/^C / {
+ name = $8
+ bx = $13 - $11
+ if (name in BX)
+ {
+ if (BX[name] != bx)
+ BXDIFF[name] = BX[name] - bx
+ }
+ else
+ BX[name] = bx
+ }
+
+
+/^C / {
+ name = $8
+ by = $14 - $12
+ if (name in BY)
+ {
+ if (BY[name] != by)
+ BYDIFF[name] = BY[name] - by
+ }
+ else
+ BY[name] = by
+ }
+
+
+END {
+ Sortpipe = "sort -f | pr -3 -w80 -l1 -t"
+ print "Comparison of AFM metrics in files:", ARGV[1], ARGV[2]
+ print "Font names:", FontName[1], FontName[2]
+ show_name_diffs(FontName[2],CharName2, FontName[1],CharName1)
+ show_name_diffs(FontName[1],CharName1, FontName[2],CharName2)
+ show_num_diffs("WX width differences", WXDIFF)
+ show_num_diffs("Bounding box width differences", BXDIFF)
+ show_num_diffs("Bounding box height differences",BYDIFF)
+ }
+
+function show_name_diffs(font1,array1,font2,array2, name)
+{
+ print "\nChars from", font2, "missing from", font1 ":"
+ for (name in array2)
+ {
+ if (!(name in array1))
+ printf("%s\n", name) | Sortpipe
+ }
+ close(Sortpipe)
+}
+
+function show_num_diffs(title,array, name)
+{
+ printf("\n%s:\n", title)
+ for (name in array)
+ printf("%-15s\t%4d\n", name, array[name]) | Sortpipe
+ close(Sortpipe)
+}