[PD-dev] Work on "help" menu and help-patch searching spec
B. Bogart
ben at ekran.org
Wed May 4 21:12:38 CEST 2005
Hey Krzysztof,
Thanks for contributing this.
Maybe I'm just too tired but I'm having trouble imagining the structure
of the index file. something like:
counter-help.pd control sound
Could put the counter-help in both the control and sound catagories?
Any developer added catagories would be automagically added to the list?
I was thinking that a short description of each entry (help-file) would
be very handy to show when searching. Since the name of the object/extra
may not be meaningful. So lets say we have DESCRIPTION KEYWORDS
CATAGORY in the template. The patch parsing script could:
(in sketchy pseudo tcl)
set path /extra/ # all libs and all *-help.pd files should be here.
cd $path
set help_files [glob *-help.pd] # list -help files.
set help_index 0
foreach help_file $help_files {
set FILENAME($help_index) $help_file
set id [open $help_file r]
set help_contents [read $id]
close $id
foreach help_line [split $help_contents "\n"] { # loop over lines
foreach help_feild [list DESCRIPTION KEYWORDS CATAGORY]
if ($help_line contains $help_feild) {
# Extract from $help_feild to ";" put in variable value
# Create a different array for each feild
set $help_feild($help_index) $value
}
}
}
incr help_index
# generate index file (is this needed if we rebuild on PD start?)
}
# The searching could look something like:
# the forloop could be changed for the array searching functions
for {set i 0} {$i < [array size KEYWORDS]} {incr i} {
if {[string match -nocase $KEYWORDS($i) $keyword_search]} {
# create a nice output list of matches
$w.listbox insert end "$FILENAME($i)\t$DESCRIPTION($i)"
}
}
# Generating the help menu could contain something like:
# generate list of unique catagories
foreach catagory $catagories {
# generate list of help files for this catagory in $w.menu.$catagory
$w.menu add cascade -label $catagory -menu $w.menu.$catagory
}
Notes: -help files COULD be also PDDP all_about_* patches. Any patches
in the correct folder(s) with the right feilds would be searchable.
The code above depends on each -help file containing all three Feilds.
Anyhow its just a sketch of how things could work. I've put this on the
wiki: https://puredata.org/Members/bbogart/SimpleImplimentation
I agree with HC that we should only depend on tcl/tk for the searching
system.
B.
Hans-Christoph Steiner wrote:
>
> On Apr 27, 2005, at 4:46 AM, Krzysztof Czaja wrote:
>
>> Hans-Christoph Steiner wrote:
>> ...
>>
>>> A simple set of keywords would be easiest to implement to start
>>> with. Then we can test the basic idea out, and see whether its
>>> worthwhile to invest a lot of time coding an dynamic, flexible
>>> keyword system.
>>
>>
>> dynamic is easier... in tcl it could be
>>
>> while {[gets $ch line] >= 0} {
>> if {[regexp $skipbadentries $line] == 0} { ;# for safety
>> set helpfile [lindex $line 0]
>> foreach c [lrange $line 1 end] {
>> lappend categories($c) $helpfile
>> }
>> }
>> }
>>
>> which might be fed by
>>
>> find . -name "*-help.pd" -exec awk \
>> '/KEYWORDS/ {print FILENAME substr($0,index($0,"KEYWORDS")+9)}' {} \;
>>
>> Krzysztof
>>
>
> Looks good, except find and awk are not standard on Windows. If we are
> doing to make a dynamic system, it should be dynamic at run time, not
> just build time. It should run whenever Pd starts so that user-added
> patches are also included.
>
> And I don't think we want to start making Pd dependent on find and awk.
>
> .hc
>
> ________________________________________________________________________
> ____
>
> "Information wants to be free."
> -Stewart Brand
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