A first little report on some preparations and a night work to read the Jack connection information (Linux Audio) from a saved "Carla" state and putting it into a BWise connected block form.
I used the first procedure from A little XML parser to read and somewhat verify the integrity of the XML data.
# # read the (test) "Carla" input file with as the last part the "patchbay" # XML information describing the Jack (audio) connections # as "source/target" pairs with additional pin names set xmltext "" set xmlf open test.carxp while {eof $xmlf == 0} {
append xmltext "[gets $xmlf]\n"
} close $xmlf
# Use RS's "xml2list" procedure to read all the connections in "xmlo" set count 0; set xmlo "" foreach i [lindex [lrange [
xml2list [string range $xmltext [string first "<Patchbay>" $xmltext] [
expr [string first "</Patchbay>" $xmltext] + [string length "</Patchbay>"]]]
] 1 end] 1] {
if {[lindex [lindex [lindex $i 2] 1] 0] == "Target"
&& [lindex [lindex [lindex $i 2] 0] 0] == "Source"} {
append xmlo "[lindex [lindex [lindex [lindex [lindex $i 2] 0] end] 0] end],[lindex [lindex [lindex [lindex [lindex $i 2] 1] end] 0] end]\n"
incr count
}}
# Jack(d) named audio connection can contain most characters (no . and ! I think) # BWise block and pin names want only alnums and _s proc stringtoblockname { {str} } {
set o ""
foreach i [split $str {}] {
if {[string is alnum $i] || $i == "_"} {
append o $i
} {
append o "_"
}
}
return [string tolower $o]
}# Read through the xmlo lines with 4 names for a connection # (2 blocks, 2 pins) and create array entries per unique # block name and list all the connected pins (in or out) array unset xmlins array unset xmlouts foreach i split $xmlo '\n' {
if {$i != "" } {
lappend xmlouts([lindex [split [lindex [split $i ','] 0] ':'] 0]) [lindex [split [lindex [split $i ','] 0] ':'] 1]
lappend xmlins([lindex [split [lindex [split $i ','] 1] ':'] 0]) [lindex [split [lindex [split $i ','] 1] ':'] 1]
}}
# Create BWise blocks from the above gathered info # simply all on a row, but with the correct number of # pins and simplified block names # and a special "testxml" additional canvas tag set ix 50 foreach i lsort -uni [concat [array names xmlins array names xmlouts] {
set ins {}; set outs {}
if [info exists xmlins($i) ] {
foreach j [lsort -unique $xmlins($i)] {
lappend ins [stringtoblockname $j]
}
}
if [info exist xmlouts($i)] {
foreach j [lsort -unique $xmlouts($i)] {
lappend outs [stringtoblockname $j]
}
}
if {[llength $ins] > [llength $outs]} {
set height [expr 17+ 18 * [llength $ins]]
} {
set height [expr 17+ 18 * [llength $outs]]
}
eval newblock [stringtoblockname $i] $ix 50 40 $height "\{$ins\}" "\{$outs\}" testxml ; set ix [expr $ix + 50]}
# and connect the blocks according to the XML spec foreach i split $xmlo '\n' {
if {$i != "" } {
connect {} [stringtoblockname [lindex [split [lindex [split $i ','] 0] ':'] 0]] [stringtoblockname [lindex [split [lindex [split $i ','] 0] ':'] 1]] [stringtoblockname [lindex [split [lindex [split $i ','] 1] ':'] 0]] [stringtoblockname [lindex [split [lindex [split $i ','] 1] ':'] 1]]
}}