[reportlab-users] crash when using TTFont

[Dries]

hi,

I'm trying to dynamically generate a pdf file that has a sample text 
printed on every page, by feeding the program a .ttf file at the command 
line.

It seems to work until I tried to feed it the same .ttf file twice. This 
matters because apparently some .ttf files internally use the same name 
(I have this with Bank_md.ttf and BankGothic-Medium.ttf for example. 
Here is my python script:

=== Start Code font2pdf.py====
#!/usr/bin/env python
import os
import sys
sys.path=['/Users/dries/lib/python']+sys.path
import reportlab
import reportlab.rl_config
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import *
from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import letter, A4
from reportlab.lib.units import *
from reportlab.lib.colors import pink, black, red, blue, green

# Some script wide variables
text = "The quick brown fox jumps over the lazy dog."

pdf_file="fonts.pdf"
ttf_files = sys.argv[1:]
width, height = A4

# we know some glyphs are missing, suppress warnings
reportlab.rl_config.warnOnMissingFontGlyphs = 0

# get the canvas
pdf = canvas.Canvas(pdf_file, pagesize=A4, verbosity=1)
print pdf.getAvailableFonts()

# Main loop
for ttf_file in ttf_files:
    print ttf_file
    try:
        fontname = os.path.basename(ttf_file)
        font = TTFont(fontname,ttf_file)
        print font
        print fontname
        pdfmetrics.registerFont(font)
        print pdfmetrics.getRegisteredFontNames()
       
        pdf.init_graphics_state()
        pdf.translate(1*cm,height-1*cm)

        pdf.setFont(fontname, 14)
        pdf.drawString(0,-14,text)

        #pdf.setFont(fontname, 22)
        #pdf.drawString(0,-28,text)

        #print ttf_file, " converted..."
        #pdf.showPage()
    except:
        print 'Raised an EXCECPTION!! while processing ', ttf_file, " 
Skipping ..."
        print sys.exc_type, sys.exc_value
pdf.save()
print reportlab.Version

=== End of code

This is how I launch:
~/workspace/font2pdf $ font2pdf.py 
/Users/dries/lib/python/reportlab/fonts/rina.ttf 
/Users/dries/lib/python/reportlab/fonts/rina.ttf
This is what I get:

['Courier', 'Courier-Bold', 'Courier-BoldOblique', 'Courier-Oblique', 
'Helvetica', 'Helvetica-Bold', 'Helvetica-BoldOblique', 
'Helvetica-Oblique', 'Symbol', 'Times-Bold', 'Times-BoldItalic', 
'Times-Italic', 'Times-Roman', 'ZapfDingbats']
/Users/dries/lib/python/reportlab/fonts/rina.ttf
<reportlab.pdfbase.ttfonts.TTFont instance at 0x2aaaac745bd8>
rina.ttf
['Helvetica', 'Symbol', 'ZapfDingbats', 'rina.ttf']
/Users/dries/lib/python/reportlab/fonts/rina.ttf
<reportlab.pdfbase.ttfonts.TTFont instance at 0x2aaaab403bd8>
rina.ttf
['Helvetica', 'Symbol', 'ZapfDingbats', 'rina.ttf']
Traceback (most recent call last):
  File "./font2pdf.py", line 53, in ?
    pdf.save()
  File "/Users/dries/lib/python/reportlab/pdfgen/canvas.py", line 843, 
in save
    self._doc.SaveToFile(self._filename, self)
  File "/Users/dries/lib/python/reportlab/pdfbase/pdfdoc.py", line 218, 
in SaveToFile
    f.write(self.GetPDFData(canvas))
  File "/Users/dries/lib/python/reportlab/pdfbase/pdfdoc.py", line 230, 
in GetPDFData
    fnt.addObjects(self)
  File "/Users/dries/lib/python/reportlab/pdfbase/ttfonts.py", line 
1099, in addObjects
    pdfFont.ToUnicode = doc.Reference(cmapStream, 'toUnicodeCMap:' + 
baseFontName)
  File "/Users/dries/lib/python/reportlab/pdfbase/pdfdoc.py", line 459, 
in Reference
    raise ValueError, "redefining named object: "+repr(name)
ValueError: redefining named object: 'toUnicodeCMap:AAAAAA+Rina'

Can someone help to pin this down? Thanks.