Recent changes to bugs

Error when processing fo file

Alex Roitman — Sat, 24 Feb 2007 22:15:01 -0000

When I run xmlroff on the attached fo file, I get the error, see below. I am clueless about fo files, so please let me know how I can assist in debugging this. The fo file was obtained by running xsltproc on the docbook xml file.

(process:21637): libfo-CRITICAL **: Expression evaluation error: Expression not completely evaluated: '://docbook.sourceforge.net/release/images/draft.png'
Object path: /FoTree[1]/root[1]/layout-master-set[1]/simple-page-master[38]/region-body[1]
Object path: /FoTree[1]/root[1]/layout-master-set[1]/simple-page-master[38]/region-body[1]

(process:21637): libfo-CRITICAL **: fo_object_log_or_propagate_error: assertion `src != NULL' failed

libfo-ERROR **: file fo-expr-eval.c: line 506 (parse_number): should not be reached
aborting...
Aborted

0.3.99 fails to link

Ken Yap — Fri, 15 Dec 2006 12:28:28 -0000

After I worked around that last fo-image.c problem by removing the extra argument and the error test after it, I get this output from make. Those errors with multiple definitions look serious. At this point I am stumped. I attach the make output.

0.39 fails to compile fo-image.c

Ken Yap — Fri, 15 Dec 2006 12:12:32 -0000

gcc -DHAVE_CONFIG_H -I. -I. -I.. -DG_LOG_DOMAIN=\"libfo\" -pthread -I/opt/gnome/include/glib-2.0 -I/opt/gnome/lib/glib-2.0/include -I/usr/include/libxml2 -I/opt/gnome/include/gdk-pixbuf-1.0 -I/opt/gnome/include -I/opt/gnome/include/gtk-1.2 -I/opt/gnome/include/glib-1.2 -I/opt/gnome/lib/glib/include -I.. -g -O2 -pthread -I/opt/gnome/include/glib-2.0 -I/opt/gnome/lib/glib-2.0/include -MT fo-image.lo -MD -MP -MF .deps/fo-image.Tpo -c fo-image.c -fPIC -DPIC -o .libs/fo-image.o
fo-image.c: In function 'fo_image_set_uri':
fo-image.c:278: error: too many arguments to function 'gdk_pixbuf_new_from_file'
make[2]: *** [fo-image.lo] Error 1
make[2]: Leaving directory `/usr/local/src/xmlroff-0.3.99/util'

According to the API, this function takes only the filename argument, and error is detected by a return of NULL.

I appear to have version 2.2 of gdk-pixbuf.

The gcc version is 4.1 if it matters.

0.39 cannot find pango-xsl-attributes.h

Ken Yap — Fri, 15 Dec 2006 12:07:51 -0000

Include file cannot be found because it is actually in pangoxsl/pangoxsl/pango-xsl-attributes.h. I worked around this by making a symlink from pangoxsl/pangoxsl/pango-xsl-attributes.h to pangoxsl/pango-xsl-attributes.h

0.39 cannot detect gdk-pixbuf

Ken Yap — Fri, 15 Dec 2006 12:06:16 -0000

As supplied by my vendor (OpsnSUSE 10.2), gdk-pixbuf has no metadata file for pkg-config, so the configure test fails, but it has a config info program in /opt/gnome/bin/gdk-pixbuf-config. This has to be run with the arguments --libs and --cflags in turn to extract the desired info.

SVG output unreadable in FireFox 1.5

Tony Graham — Mon, 03 Jul 2006 08:50:19 -0000

The attached file hangs FireFox 1.5.

assertion errors on (seemingly) valid code.

Stefan Seefeld — Wed, 31 May 2006 14:27:28 -0000

The attached code generates

(process:24808): libfo-CRITICAL **: fo_expr_eval:
assertion `IS_CHAR (g_utf8_get_char (string))' failed

(process:24808): libfo-CRITICAL **:
fo_property_id_validate: assertion `datatype != NULL'
failed

which isn't particularly helpful. If the input is indeed
wrong, xmlroff should tell me so, instead of abort.

The input was generated from docbook xml via
docbook-xsl-fo -> libfo-compat before getting passed
to xmlroff.

xmlroff doesn't seem to honor break-after attribute.

Stefan Seefeld — Wed, 22 Mar 2006 23:29:29 -0000

The attached fo file gets rendered on a single page,
even though between the two versions of the title
is a 'break-after="page"' attribute.
This is xmlroff pre-0.4 CVS (as of 2006-03-22).

extent parameter not supported in fo:region

Shadow aok — Tue, 07 Mar 2006 19:22:39 -0000

Extent parameter insn't supported for fo:region in the
layout, so we can't set footer or header to each
generated page because they won't be displayed due to
the lack of the parameter.

<fo:layout-master-set>
<fo:simple-page-master master-name="report"
page-height="29.7cm"
page-width="21cm"
margin-top="1cm"
margin-bottom="3cm"
margin-left="2cm"
margin-right="2cm">
<fo:region-body margin-top="1cm"/>
<fo:region-before extent="1cm"/>
<fo:region-after extent="1cm"/>
</fo:simple-page-master>
</fo:layout-master-set>

Support external graphcics (such as png) with alpha channel.

Stefan Seefeld — Mon, 30 Jan 2006 11:58:14 -0000

Right now xmlroff prints nothing in the region where the
graphic is supposed to appear. When I modify the image
by removing the alpha channel it works better (there
appear to be other issues, but that's for a different
bug report).

If supporting alpha channels is hard, it might be a
worthwhile first step to just ignore the alpha values,
i.e. print the image as if it was plain.