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+# index.tcl --
+#
+# This file defines procedures that are used during the first pass of
+# the man page conversion.  It is used to extract information used to
+# generate a table of contents and a keyword list.
+#
+# Copyright (c) 1996 by Sun Microsystems, Inc.
+#
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+# 
+# SCCS: %Z% $Id: index.tcl,v 1.1 1998/04/28 18:53:50 stanton Exp $ 
+# 
+
+# Global variables used by these scripts:
+#
+# state -	state variable that controls action of text proc.
+#				
+# topics -	array indexed by (package,section,topic) with value
+# 		of topic ID.
+#
+# keywords -	array indexed by keyword string with value of topic ID.
+#
+# curID - 	current topic ID, starts at 0 and is incremented for
+# 		each new topic file.
+#
+# curPkg -	current package name (e.g. Tcl).
+#
+# curSect -	current section title (e.g. "Tcl Built-In Commands").
+#
+
+# getPackages --
+#
+# Generate a sorted list of package names from the topics array.
+#
+# Arguments:
+# none.
+
+proc getPackages {} {
+    global topics
+    foreach i [array names topics] {
+	regsub {^(.*),.*,.*$} $i {\1} i
+	set temp($i) {}
+    }
+    lsort [array names temp]
+}
+
+# getSections --
+#
+# Generate a sorted list of section titles in the specified package
+# from the topics array.
+#
+# Arguments:
+# pkg -			Name of package to search.
+
+proc getSections {pkg} {
+    global topics
+    foreach i [array names topics "${pkg},*"] {
+	regsub {^.*,(.*),.*$} $i {\1} i
+	set temp($i) {}
+    }
+    lsort [array names temp]
+}
+
+# getSections --
+#
+# Generate a sorted list of topics in the specified section of the
+# specified package from the topics array.
+#
+# Arguments:
+# pkg -			Name of package to search.
+# sect -		Name of section to search.
+
+proc getTopics {pkg sect} {
+    global topics
+    foreach i [array names topics "${pkg},${sect},*"] {
+	regsub {^.*,.*,(.*)$} $i {\1} i
+	set temp($i) {}
+    }
+    lsort [array names temp]
+}
+
+# text --
+#
+# This procedure adds entries to the hypertext arrays topics and keywords.
+#
+# Arguments:
+# string -		Text to index.
+
+
+proc text string {
+    global state curID curPkg curSect topics keywords
+
+    switch $state {
+	NAME {
+	    foreach i [split $string ","] {
+		set topic [string trim $i]
+		set index "$curPkg,$curSect,$topic"
+		if {[info exists topics($index)]
+		    && [string compare $topics($index) $curID] != 0} {
+		    puts stderr "duplicate topic $topic in $curPkg"
+		}
+		set topics($index) $curID
+		lappend keywords($topic) $curID
+	    }
+	}
+	KEY {
+	    foreach i [split $string ","] {
+		lappend keywords([string trim $i]) $curID
+	    }
+	}
+	DT -
+	OFF -
+	DASH {}
+	default {
+	    puts stderr "text: unknown state: $state"
+	}
+    }
+}
+
+
+# macro --
+#
+# This procedure is invoked to process macro invocations that start
+# with "." (instead of ').
+#
+# Arguments:
+# name -	The name of the macro (without the ".").
+# args -	Any additional arguments to the macro.
+
+proc macro {name args} {
+    switch $name {
+	SH {
+	    global state
+
+	    switch $args {
+		NAME {
+		    if {$state == "INIT" } {
+			set state NAME
+		    }
+		}
+		DESCRIPTION {set state DT}
+		INTRODUCTION {set state DT}
+		KEYWORDS {set state KEY}
+		default {set state OFF}
+	    }
+	    
+	}
+	TH {
+	    global state curID curPkg curSect topics keywords
+	    set state INIT
+	    if {[llength $args] != 5} {
+		set args [join $args " "]
+		puts stderr "Bad .TH macro: .$name $args"
+	    }
+	    incr curID
+	    set topic	[lindex $args 0]	;# Tcl_UpVar
+	    set curPkg	[lindex $args 3]	;# Tcl
+	    set curSect	[lindex $args 4]	;# {Tcl Library Procedures}
+	    set index "$curPkg,$curSect,$topic"
+	    set topics($index) $curID
+	    lappend keywords($topic) $curID
+	}
+    }
+}
+
+
+# dash --
+#
+# This procedure is invoked to handle dash characters ("\-" in
+# troff).  It only function in pass1 is to terminate the NAME state.
+#
+# Arguments:
+# None.
+
+proc dash {} {
+    global state
+    if {$state == "NAME"} {
+	set state DASH
+    }
+}
+
+
+
+# initGlobals, tab, font, char, macro2 --
+#
+# These procedures do nothing during the first pass. 
+#
+# Arguments:
+# None.
+
+proc initGlobals {} {}
+proc newline {} {}
+proc tab {} {}
+proc font type {}
+proc char name {}
+proc macro2 {name args} {}
+