report customFonts: have debugging logs for fonts mapped.

Since this is platform-dependant, it is good to be able to debug
if that algorithm worked and located our TTF fonts.

bzr revid: p_christ@hol.gr-20101123151124-wk5r5fac00kpu3f4

bin/report/render/rml2pdf/customfonts.py

@@ -21,6 +21,7 @@
 
 from reportlab import rl_config
 import os
+import logging
 
 """This module allows the mapping of some system-available TTF fonts to
 the reportlab engine.
@@ -61,6 +62,7 @@ def FindCustomFonts():
        meanwhile, the server must be restarted eventually.
     """
     dirpath =  []
+    log = logging.getLogger('report.fonts')
     global __foundFonts
     for dirname in rl_config.TTFSearchPath:
         abp = os.path.abspath(dirname)
@@ -72,7 +74,7 @@ def FindCustomFonts():
             continue
         for d in dirpath:
             if os.path.exists(os.path.join(d, fname)):
-                # print "found font %s in %s" % (fname, d)
+                log.debug("Found font %s in %s as %s", fname, d, name)
                 __foundFonts.append(fname)
                 break
                 

bin/report/render/rml2pdf/trml2pdf.py

@@ -31,6 +31,7 @@ import cStringIO
 import utils
 import color
 import os
+import logging
 from lxml import etree
 import base64
 from reportlab.platypus.doctemplate import ActionFlowable
@@ -909,7 +910,11 @@ def parseNode(rml, localcontext = {},fout=None, images={}, path='.',title=None):
     try:
         from customfonts import SetCustomFonts
         SetCustomFonts(r)
+    except ImportError:
+        # means there is no custom fonts mapping in this system.
+        pass
     except Exception:
+        logging.getLogger('report').warning('Cannot set font mapping', exc_info=True)
         pass
     fp = cStringIO.StringIO()
     r.render(fp)