Version 5 of A little man page viewer

if 0 {Richard Suchenwirth 2004-01-21 - As a little evening project, here's a viewer for man pages that understands (some of) the roff format. Highly experimental, nothing guaranteed, but a nice distraction :}

 package require Tk

 set font {Times 10}
 set file [lindex $argv 0]
 wm title . "man [file tail  [file root $file]]"
 pack [scrollbar .s -command ".t yview"] -side right -fill y
 pack [text .t -wrap word -yscrollcommand ".s set" \
        -padx 10 -font $font] \
    -side left -fill both -expand 1
 foreach style {bold italic} {
    .t tag config $style -font [concat $font $style]
 }
 .t tag config right -justify right

 set fp [open $file]
 set tab ""
 foreach line [split [read $fp] \n] {
     set tag ""
     if {$line eq ".EN"} {continue}
     if {$line eq ".PP"} {set line \n\n}
     if {$line eq ".br"} {set line \n}
     if {$line eq ".ti 8"} {set line \n\t}
     if {$line eq ".in 8"} {set tab \t; continue}
     if {$line eq ".in 0"} {set tab ""; continue}
     if [regexp  {^\.SH (.+)} $line -> line] {set line \n\n$line; set tag bold}
     if [regexp  {^\.TH (.+)} $line -> line] {set tag right}
     if [regexp  {^\.I (.+)} $line -> line]  {set tag italic}
     if [regexp  {^\.B (.+)} $line -> line]  {set tag bold}
     if [regexp  {^\.BI (.+)} $line -> line] {set tag {bold italic}}
     if [regexp  {^\.TP} $line] {set line \n\t}

     set line [string map {\\- - \\fB "" \\fR "" \\^ ""} $line]
    .t insert end "$tab$line " $tag
 }
 close $fp

escargo 21 Jan 2003 - Could you give some examples of roff codes that might be encountered that would not be handled? (Some of these formatting commands look like they are one per line. Would some elseif structures be appropriate here?)

Category Application