[library-web] mallard: copy files from C locales before processing, for XInclude

[Frederic Peters <fpeters src gnome org>]

commit 7d47053afefc7176b1efeb6093b5d0a7e2871727
Author: FrÃdÃric PÃters <fpeters 0d be>
Date:   Mon Aug 13 08:07:15 2012 +0200

    mallard: copy files from C locales before processing, for XInclude

 src/modtypes/mallard.py |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)
---
diff --git a/src/modtypes/mallard.py b/src/modtypes/mallard.py
index abef55b..5a3b953 100644
--- a/src/modtypes/mallard.py
+++ b/src/modtypes/mallard.py
@@ -328,6 +328,27 @@ class MallardModule(DocModule):
                 if mtime > max(self.mtime_tarball, self.mtime_xslt_files):
                     continue
 
+            # make sure there's a copy of figures (and other "static" elements)
+            # in the language subdirectory, as they may be used by XInclude and
+            # therefore be required already during the XSLT step.
+            copied_files = []
+            for doc_figure in doc_figures:
+                src = os.path.join(lang_dirname, doc_figure)
+                if os.path.exists(src):
+                    # file already exists, keep it
+                    continue
+                # fallback to file from C locale.
+                src = os.path.join(ext_dirname, self.dirname, 'C', doc_figure)
+                if not os.path.exists(src):
+                    # fallback file doesn't even exist, ignore
+                    continue
+
+                dst = os.path.join(lang_dirname, doc_figure)
+                if not os.path.exists(os.path.split(dst)[0]):
+                    os.makedirs(os.path.split(dst)[0])
+                open(dst, 'w').write(open(src, 'r').read())
+                copied_files.append(dst)
+
             for doc_page in doc_pages:
                 xml_file = os.path.join(lang_dirname, doc_page)
                 filename = os.path.splitext(doc_page)[0] + '.html.' + lang
@@ -356,6 +377,10 @@ class MallardModule(DocModule):
                 if rc != 0:
                     logging.warn('%s failed with error %d' % (' '.join(cmd), rc))
 
+            # remove static files that were copied to the lang directory
+            for filename in copied_files:
+                os.unlink(filename)
+
             if doc_figures:
                 # and copy images/
                 logging.debug('copying figures')