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- ##---------------------------------------------------------------------------##
- ## File:
- ## mif_xrefs.pl
- ## Author:
- ## Earl Hood ehood@convex.com
- ## Description:
- ## This file is defines the "mif_xrefs" perl package. It defines
- ## routines to handle the XRefFormats via MIFread_mif() defined in
- ## the "mif" package.
- ##---------------------------------------------------------------------------##
- ## Copyright (C) 1994 Earl Hood, ehood@convex.com
- ##
- ## 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- ##---------------------------------------------------------------------------##
-
- require 'mif/mif.pl' || die "Unable to require mif.pl\n";
-
- package mif_xrefs;
-
- ##---------------------------------------------##
- ## Add XRefFormats function to %MIFToken array ##
- ##---------------------------------------------##
- $mif'MIFToken{'XRefFormats'} = 'XRefFormats';
-
- ##--------------------------------##
- ## XRefFormats associative arrays ##
- ##--------------------------------##
- %XRefDef = (); # Cross-reference definition
-
- ##---------------------------------------------##
- ## Variables for current XRefFormat definition ##
- ##---------------------------------------------##
- $x_Name = "";
- $x_Def = "";
-
- ##------------------------##
- ## Import 'mif' variables ##
- ##------------------------##
- $MStore = $mif'MStore;
- $MOpen = $mif'MOpen;
- $MClose = $mif'MClose;
- $MLine = $mif'MLine;
- $mso = $mif'mso;
- $msc = $mif'msc;
- $stb = $mif'stb;
- $ste = $mif'ste;
- $como = $mif'como;
-
- ##---------------##
- ## Main Routines ##
- ##---------------##
- ##---------------------------------------------------------------------------
- ## MIFwrite_xrefs() outputs the XRefFormats as defined by the
- ## associative arrays.
- ##
- ## Usage:
- ## &'MIFwrite_xrefs(FILEHANDLE);
- ##
- sub main'MIFwrite_xrefs {
- local($handle, $l) = @_;
- local($i0, $i1, $i2) = (' ' x $l, ' ' x (1+$l), ' ' x (2+$l));
-
- print $handle $i0, $mso, 'XRefFormats', "\n";
- foreach (sort keys %XRefDef) {
- print $handle $i1, $mso, "XRefFormat\n";
- print $handle $i2, $mso, 'XRefName ', $stb, $_, $ste, $msc, "\n";
- print $handle $i2, $mso, 'XRefDef ', $stb, $XRefDef{$_},
- $ste, $msc, "\n";
- print $handle $i1, $msc, " $como end of XRefFormat\n";
- }
- print $handle $i0, $msc, " $como end of XRefFormats\n";
- }
- ##---------------------------------------------------------------------------##
- ## MIFget_xref_data() returns the data associated with the Frame
- ## xref $xref.
- ##
- ## Usage:
- ## ($def) = &'MIFget_xref_data($xref);
- ##
- sub main'MIFget_xref_data {
- local($xref) = @_;
- ($XRefDef{$xref});
- }
- ##---------------------------------------------------------------------------##
- ## MIFget_xrefs() returns a sorted array of all xrefs defined
- ## in xref formats.
- ##
- ## Usage:
- ## @xrefs = &'MIFget_xrefs();
- ##
- sub main'MIFget_xrefs {
- return sort keys %XRefDef;
- }
- ##---------------------------------------------------------------------------##
- ## MIFreset_xrefs() resets the associative arrays for the xrefs
- ## formats.
- ##
- ## Usage:
- ## &'MIFreset_xrefs();
- ##
- sub main'MIFreset_xrefs {
- undef %XRefDef;
- }
- ##---------------------------------------------------------------------------##
- ##--------------##
- ## Mif Routines ##
- ##--------------##
- ##---------------------------------------------------------------------------##
- ## The routines definded below are all registered in the %MIFToken ##
- ## array for use in the read_mif() routine. There purpose is to ##
- ## store the information contained in XRefFormats. ##
- ##---------------------------------------------------------------------------##
-
- ##---------------------------------------------------------------------------
- ## XRefFormats() is the token routine for 'XRefFormats'.
- ## It sets/restores token routines depending upon mode.
- ##
- sub mif'XRefFormats {
- local($token, $mode, *data) = @_;
- if ($mode == $MOpen) {
- ($_fast, $_noidata) = ($mif'fast, $mif'no_import_data);
- ($mif'fast, $mif'no_import_data) = (1, 1);
- @_x_orgfunc = @mif'MIFToken{
- 'XRefFormat',
- 'XRefName',
- 'XRefDef'
- };
- @mif'MIFToken{
- 'XRefFormat',
- 'XRefName',
- 'XRefDef'
- } = (
- "mif_xrefs'XRefFormat",
- "mif_xrefs'XRefName",
- "mif_xrefs'XRefDef"
- );
- } elsif ($mode == $MClose) {
- @mif'MIFToken{
- 'XRefFormat',
- 'XRefName',
- 'XRefDef'
- } = @_x_orgfunc;
- ($mif'fast, $mif'no_import_data) = ($_fast, $_noidata);
- }
- }
- ##---------------------------------------------------------------------------
- sub XRefFormat {
- local($token, $mode, *data) = @_;
-
- if ($mode == $MOpen) {
- $x_Name = "";
- $x_Def = "";
- } elsif ($mode == $MClose) {
- $XRefDef{$x_Name} = $x_Def;
- } else {
- warn "Unexpected mode, $mode, passed to XRefFormat routine\n";
- }
- }
- ##---------------------------------------------------------------------------
- sub XRefName {
- local($token, $mode, *data) = @_;
- ($x_Name) = $data =~ /^\s*$stb([^$ste]*)$ste.*$/o;
- }
- ##---------------------------------------------------------------------------
- sub XRefDef {
- local($token, $mode, *data) = @_;
- ($x_Def) = $data =~ /^\s*$stb([^$ste]*)$ste.*$/o;
- }
- ##---------------------------------------------------------------------------
- 1;
-