Re: gEDA-user: gschem won't connect nets

[Werner Hoch <werner.ho@xxxxxx>]

Hi Bernd,

On Mittwoch, 11. Juni 2008, Bernd Jendrissek wrote:
> On Sun, May 25, 2008 at 4:25 AM, Rick Collins <gnuarm.2007@xxxxxxxxx> 
wrote:
> > Or perhaps the software should check this and give a warning when
> > placing a part so that it is not connectable.
>
> It could be cute to have a libgsymcheck which gschem's component
> selector could invoke each time you select a component, having it
> write warnings about the symbol into an alert box.

I'm using a component-library-command that checks the symbol before it's 
being displayed in the component selector.

The library command is a small python script that calls gsymcheck. The 
gsymcheck output is forwarded to stderr and is displayed in the log 
window of gschem.

The connection commands are in an scm file in the gafrc.d directory:
-------
(component-library-command 
 "/home/werner/oss/geda/nice_sym/connect_symbols.py -l my_gedasymbols" 
 "/home/werner/oss/geda/nice_sym/connect_symbols.py -p my_gedasymbols" 
 "gedasymbols")
(component-library-command 
 "/home/werner/oss/geda/nice_sym/connect_symbols.py -l symbols_def" 
 "/home/werner/oss/geda/nice_sym/connect_symbols.py -p symbols_def"
 "symbols_def")
--------

The python script connect_symbols.py is attached.

Before I've connected the symbols, I've renamed all symbols that are 
used by that commands using a SHA1-hash extentions. Symbol BC557-2.sym 
is stored as BC557-2_f2073e99.sym in a different directory.

With this stuff I've connected all symbols from www.gedasymbols.org and 
a copy of all symbols provided with geda-symbols into gschem.

Regards
Werner

#!/usr/bin/python

# Copyright (C) 2008 Werner Hoch <werner.ho@xxxxxx>
# Released under the terms of the GNU General Public License, version 2


import os, sys, getopt
import dircache
import tempfile, popen2


#################### SETUP VARS
REL_DIR= "./"       # relation between this script and the BASE_DIR
BASE_DIR = os.path.join(os.getcwd(),
                        os.path.dirname(sys.argv[0]),
                        REL_DIR)

#################### FUNCTIONS
def log(x):
    open("connect_symbols.log","at").write(str(x) + "\n")

def usage():
    print "usage: " +  sys.argv[0] + """ [options], ...
  -h --help: print help information
  -v --verbose: print debug messages to stderr
  -l --list library: list symbol of one library directory
  -p --part library part: get a single part of a library"""


#################### MAIN

log(sys.argv)
try:
    opts, args = getopt.getopt(sys.argv[1:], "hvl:p:", ["help", "verbose", "list=", "part="])
except getopt.GetoptError, err:
    # print help information and exit:
    print str(err) # will print something like "option -a not recognized"
    usage()
    sys.exit(2)


verbose = False
listlibrary = False
printpart = False

for o, a in opts:
    if o == "-v":
        verbose = True
    elif o in ("-h", "--help"):
        usage()
        sys.exit()
    elif o in ("-v", "--verbose"):
        verbose = True
    elif o in ("-l", "--list"):
        listlibrary = True
        librarydir = a
    elif o in ("-p", "--part"):
        printpart = True
        librarydir = a
        symbolname = args[0]
    else:
        assert False, "unhandled option"

if verbose:
    log(sys.argv[0] + ": opts:" + str(opts) + " args: " + str(args))

elif listlibrary:
    path = os.path.join(BASE_DIR, librarydir)
    parts = [ f[:-4] for f in dircache.listdir(path) if f[-4:] == ".sym" ]
    sys.stdout.write("\n".join(parts))
    sys.exit()

elif printpart:
    filename = os.path.join(BASE_DIR, librarydir, symbolname + ".sym")
    sys.stderr.write(filename +"\n")

    ## run gsymcheck over the symbol
    command = "gsymcheck -vv " + filename
    pop = popen2.Popen3(command, capturestderr=True)
    message = pop.fromchild.read()
    err = pop.childerr.read()
    mlines = message.split("\n")
    if len(mlines) > 9:
        message = "\n".join(mlines[7:-1]) + "\n"
    pop.wait()
    sys.stderr.write(message)

    sys.stdout.write(open(filename).read())
    sys.exit(0)

else:
    sys.stderr.write(sys.argv[0] + ": undefined case\n")
    usage()
    sys.exit(2)


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