#----------------------------------------------------------------------
# Eskil, Printing
#
# Copyright (c) 1998-2005, Peter Spjuth (peter.spjuth@space.se)
#
# 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; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
#----------------------------------------------------------------------
# $Revision$
#----------------------------------------------------------------------
# Helpers, replace with sugar macros or mathops if available in 8.5
proc + {a b} { expr {$a + $b} }
proc - {a b} { expr {$a - $b} }
# Format a line number for printing
# It will always be 5 chars wide.
proc FormatLineno {lineno} {
if {[string is integer -strict $lineno]} {
set res [format "%3d: " $lineno]
} else {
# Non-numerical linenumbers might turn up in some cases
set res [format "%-5s" $lineno]
}
if {[string length $res] > 5} {
set res [string range $res end-5 end-1]
}
return $res
}
# Process the line numbers from the line number widget into a list
# of "linestarters"
proc ProcessLineno {w} {
set tdump [$w dump -tag -text 1.0 end]
set tag ""
set line ""
set lines {}
foreach {key value index} $tdump {
if {$key eq "tagon"} {
if {$value eq "change" || [string match "new*" $value]} {
set tag $value
}
} elseif {$key eq "tagoff"} {
if {$value eq "change" || [string match "new*" $value]} {
set tag ""
}
} elseif {$key eq "text"} {
append line $value
# Collect until end of line
if {[string index $value end] eq "\n"} {
# Clean everything but the line number
set line [string trim [string trim $line] :]
if {$line eq ""} {
lappend lines {}
} else {
lappend lines [list [FormatLineno $line] $tag]
}
set line ""
}
}
}
return $lines
}
# Prepare a text block for printing
# Index denotes where in the text widget this text starts. It is used to get
# tab expansion right.
proc FixTextBlock {text index} {
# Remove any form feed
set text [string map {\f {}} $text]
# Extract column number from index
regexp {\d+\.(\d+)} $index -> index
# Expand tabs to 8 chars
while 1 {
set i [string first \t $text]
if {$i == -1} break
set n [expr {(- $i - $index - 1) % 8 + 1}]
set text [string replace $text $i $i [format %*s $n ""]]
}
return $text
}
# Format a line of text/tag pairs to enscript code
proc FormatLine {line} {
set result ""
foreach {text tag} $line {
if {$tag eq ""} {
append result $text
} else {
if {$tag eq "change"} {
set gray $::Pref(grayLevel1)
} elseif {[string match "new*" $tag]} {
set gray $::Pref(grayLevel2)
} else {
# Should not happen
set gray 1.0
puts stderr "Bad tag in FormatLine: '$tag'"
}
append result "\0bggray\{$gray\}$text\0bggray\{1.0\}"
}
}
return $result
}
# Main print function
proc PrintDiffs {top {quiet 0}} {
busyCursor $top
update idletasks
set tmpFile [file nativename ~/eskil.enscript]
if {$::diff($top,printFile) != ""} {
set tmpFile2 [file nativename $::diff($top,printFile)]
} else {
set tmpFile2 [file nativename ~/eskil.ps]
}
set lines1 {}
set lines2 {}
if {$::Pref(wideLines)} {
set wraplength 100
set linesPerPage 74
} else {
set wraplength 85
set linesPerPage 66
}
set tdump1 [$::widgets($top,wDiff1) dump -tag -text 1.0 end]
set tdump2 [$::widgets($top,wDiff2) dump -tag -text 1.0 end]
set lineNo1 [ProcessLineno $::widgets($top,wLine1)]
set lineNo2 [ProcessLineno $::widgets($top,wLine2)]
# Loop over left and right displays, collecting lines from each.
# Line numbers and text are put together and lines are wrapped if needed.
foreach tdump [list $tdump1 $tdump2] \
lineName {lines1 lines2} wrapName {wrap1 wrap2} \
lineNo [list $lineNo1 $lineNo2] {
##nagelfar variable lineName varName
##nagelfar variable wrapName varName
set lines {}
set wraps {}
set line [lindex $lineNo 0]
set newline 0
set tag {}
set chars 0
set wrapc 0
foreach {key value index} $tdump {
if {$key != "tagoff" && $newline == 1} {
lappend lines $line
lappend wraps $wrapc
set newline 0
set line [lindex $lineNo [llength $lines]]
set chars 0
set wrapc 0
}
switch $key {
text {
set value [FixTextBlock $value $index]
if {[string index $value end] eq "\n"} {
set newline 1
set value [string trimright $value "\n"]
}
set len [string length $value]
while {$chars + $len > $wraplength} {
set wrap [expr {$wraplength - $chars}]
set val1 [string range $value 0 [expr {$wrap - 1}]]
set value [string range $value $wrap end]
# The newline has its own element to simplify finding
# it later.
lappend line $val1 $tag "\n" {} " " {}
set chars 5
incr wrapc
set len [string length $value]
}
lappend line $value $tag
incr chars $len
}
tagon {
if {$value eq "change" || [string match "new*" $value]} {
set tag $value
}
}
tagoff {
if {$value eq "change" || [string match "new*" $value]} {
set tag {}
}
}
}
}
set $lineName $lines
set $wrapName $wraps
}
# Go through both lists and put each wrapped line as one element.
# Pad with empty lines as needed to accomodate for wrapped lines
# in the other side.
set wraplines1 {}
set wraplines2 {}
foreach l1 $lines1 l2 $lines2 w1 $wrap1 w2 $wrap2 {
if {$w1 > 0} {
while {[set i [lsearch $l1 "\n"]] >= 0} {
lappend wraplines1 [lrange $l1 0 [- $i 1]]
set l1 [lrange $l1 [+ $i 2] end]
}
}
lappend wraplines1 $l1
if {$w2 > 0} {
while {[set i [lsearch $l2 "\n"]] >= 0} {
lappend wraplines2 [lrange $l2 0 [- $i 1]]
set l2 [lrange $l2 [+ $i 2] end]
}
}
lappend wraplines2 $l2
if {$w1 > $w2} {
for {set t $w2} {$t < $w1} {incr t} {
lappend wraplines2 {}
}
} elseif {$w2 > $w1} {
for {set t $w1} {$t < $w2} {incr t} {
lappend wraplines1 {}
}
}
}
# Write all lines to a file, taking one page at a time from each
# side.
set ch [open $tmpFile "w"]
fconfigure $ch -encoding binary
set len1 [llength $wraplines1]
set len2 [llength $wraplines2]
set i1 0
set i2 0
while {$i1 < $len1 && $i2 < $len2} {
for {set i 0} {$i < $linesPerPage && $i1 < $len1} {incr i ; incr i1} {
puts $ch [FormatLine [lindex $wraplines1 $i1]]
}
if {$i < $linesPerPage} {puts -nonewline $ch "\f"}
for {set i 0} {$i < $linesPerPage && $i2 < $len2} {incr i ; incr i2} {
puts $ch [FormatLine [lindex $wraplines2 $i2]]
}
if {$i < $linesPerPage} {puts -nonewline $ch "\f"}
}
close $ch
# Run enscript to generate postscript
if {$::tcl_platform(platform) eq "windows" &&\
![info exists ::env(ENSCRIPT_LIBRARY)]} {
set ::env(ENSCRIPT_LIBRARY) [pwd]
}
if {[auto_execok enscript.bin] ne ""} {
set enscriptCmd [list enscript.bin]
} else {
set enscriptCmd [list enscript]
}
lappend enscriptCmd -2jcre -L $linesPerPage -M A4
if {$::Pref(wideLines)} {
lappend enscriptCmd -f Courier6
}
if {![regexp {^(.*)( \(.*?\))$} $::diff($top,leftLabel) -> lfile lrest]} {
set lfile $::diff($top,leftLabel)
set lrest ""
}
set lfile [file tail $lfile]$lrest
if {![regexp {^(.*)( \(.*?\))$} $::diff($top,rightLabel) -> rfile rrest]} {
set rfile $::diff($top,rightLabel)
set rrest ""
}
set rfile [file tail $rfile]$rrest
lappend enscriptCmd "--header=$lfile|Page \$% of \$=|$rfile"
if {$::diff(prettyPrint) != ""} {
lappend enscriptCmd -E$::diff(prettyPrint)
}
lappend enscriptCmd -p $tmpFile2 $tmpFile
if {[catch {eval exec $enscriptCmd} result]} {
if {[string index $result 0] != "\["} {
tk_messageBox -message "Enscript error: $result\ncmd: $enscriptCmd"
return
}
}
# Finished
normalCursor $top
if {!$quiet} {
destroy .dp
toplevel .dp
wm title .dp "Eskil Print"
button .dp.b -text "Close" -command {destroy .dp}
label .dp.l -anchor w -justify left -text "The following files have\
been created:\n\n$tmpFile\nInput file to enscript.\
\n\n$tmpFile2\nCreated with\
'[lrange $enscriptCmd 0 end-3] \\\n \
[lrange $enscriptCmd end-2 end]'" \
-font "Courier 8"
pack .dp.b -side bottom
pack .dp.l -side "top"
}
}
# Create a print dialog.
proc doPrint {top {quiet 0}} {
if {![info exists ::diff(prettyPrint)]} {
set ::diff(prettyPrint) ""
}
if {$quiet} {
PrintDiffs $top 1
return
}
destroy .pr
toplevel .pr
wm title .pr "Print diffs"
label .pr.l1 -justify left -anchor w \
-text "The print function is just on an\
experimental level. It will use 'enscript' to write a postcript\
file \"eskil.ps\" in your home directory."
label .pr.l2 -justify left -anchor w \
-text "Below you can adjust the gray scale\
levels that are used on the background to mark changes.\
The first value is used for changed text. The second for\
new/deleted text."
.pr.l1 configure -wraplength 400
.pr.l2 configure -wraplength 400
scale .pr.s1 -orient horizontal -resolution 0.1 -showvalue 1 -from 0.0 \
-to 1.0 -variable Pref(grayLevel1)
scale .pr.s2 -orient horizontal -resolution 0.1 -showvalue 1 -from 0.0 \
-to 1.0 -variable Pref(grayLevel2)
frame .pr.f
radiobutton .pr.r1 -text "No Syntax" -variable diff(prettyPrint) -value ""
radiobutton .pr.r2 -text "VHDL" -variable diff(prettyPrint) -value "vhdl"
radiobutton .pr.r3 -text "Tcl" -variable diff(prettyPrint) -value "tcl"
radiobutton .pr.r4 -text "C" -variable diff(prettyPrint) -value "c"
frame .pr.fs
radiobutton .pr.fs.r1 -text "80 char" -variable Pref(wideLines) -value 0
radiobutton .pr.fs.r2 -text "95 char" -variable Pref(wideLines) -value 1
pack .pr.fs.r1 .pr.fs.r2 -side left -padx 10
button .pr.b1 -text "Print to File" -padx 5\
-command "destroy .pr; update; PrintDiffs $top"
button .pr.b2 -text "Cancel" -padx 5 \
-command {destroy .pr}
grid .pr.l1 - - -sticky we
grid .pr.l2 - - -sticky we
grid .pr.s1 - - -sticky we
grid .pr.s2 - - -sticky we
grid .pr.f - - -sticky we
grid .pr.fs - - -sticky we
grid .pr.b1 x .pr.b2 -sticky we -padx 5 -pady 5
grid columnconfigure .pr {0 2} -uniform a
grid columnconfigure .pr 1 -weight 1
pack .pr.r1 .pr.r2 .pr.r3 .pr.r4 -in .pr.f -side left -fill x -expand 1
}