Export svg in xhtml, not svgz (bug 10160)

LyX did not distinguish compressed and uncompressed svg files previously.
Therefore XHTML export of vector graphics did use svgz images directly, which
is not supported by browsers. If svg and svgz are treated as two formats then
all works fine. This is also consistent with the loadable image formats
reported by qt: It reports both svg and svgz.
The gunzip dependency in converters is not new (it is already used internally),
but the gzip dependency is new, so it might not be available on windows.
This is not important at the moment, since we do not yet need to convert svg
to svgz, I only added the converter for completeness.

diff --git a/lib/configure.py b/lib/configure.py
index 3d54423f08f7e3b493ebe846d5be66a940e3a75d..8b0c56322895bfd0640fe7de2fc20481615f4155 100644 (file)
--- a/lib/configure.py
+++ b/lib/configure.py
@@ -581,7 +581,8 @@ def checkFormatEntries(dtl_tools):
         rc_entry = [r'\Format fen        fen     FEN                    "" "%%"        "%%"    ""      ""'])
     #
     checkViewerEditor('a SVG viewer and editor', [inkscape_name],
-        rc_entry = [r'\Format svg        "svg, svgz" SVG                "" "%%" "%%"   "vector,zipped=native"  "image/svg+xml"'],
+        rc_entry = [r'''\Format svg        "svg" SVG                "" "%%" "%%"       "vector"        "image/svg+xml"
+\Format svgz       "svgz" "SVG (compressed)" "" "%%" "%%"      "vector,zipped=native"  ""'''],
         path = [inkscape_path])
     #
     imageformats = r'''\Format bmp        bmp     BMP                    "" "%s"       "%s"    ""      "image/x-bmp"
@@ -978,18 +979,27 @@ def checkConverterEntries():
     # odg->png and odg->pdf converters, since the bb would be too large as well.
     checkProg('an OpenDocument -> EPS converter', ['libreoffice -headless -nologo -convert-to eps $$i', 'unoconv -f eps --stdout $$i > $$o'],
         rc_entry = [ r'\converter odg        eps2       "%%"   ""'])
+    #
+    checkProg('a SVG (compressed) -> SVG converter', ['gunzip -c $$i > $$o'],
+        rc_entry = [ r'\converter svgz       svg        "%%"   ""'])
+    #
+    checkProg('a SVG -> SVG (compressed) converter', ['gzip -c $$i > $$o'],
+        rc_entry = [ r'\converter svg        svgz       "%%"   ""'])
     # Only define a converter to pdf6 for graphics
     # Prefer rsvg-convert over inkscape since it is faster (see http://www.lyx.org/trac/ticket/9891)
     checkProg('a SVG -> PDF converter', ['rsvg-convert -f pdf -o $$o $$i', inkscape_name + ' --file=$$i --export-area-drawing --without-gui --export-pdf=$$o'],
-        rc_entry = [ r'\converter svg        pdf6       "%%"    ""'],
+        rc_entry = [ r'''\converter svg        pdf6       "%%"    ""
+\converter svgz       pdf6       "%%"    ""'''],
         path = ['', inkscape_path])
     #
     checkProg('a SVG -> EPS converter', ['rsvg-convert -f ps -o $$o $$i', inkscape_name + ' --file=$$i --export-area-drawing --without-gui --export-eps=$$o'],
-        rc_entry = [ r'\converter svg        eps        "%%"    ""'],
+        rc_entry = [ r'''\converter svg        eps        "%%"    ""
+\converter svgz       eps        "%%"    ""'''],
         path = ['', inkscape_path])
     #
     checkProg('a SVG -> PNG converter', ['rsvg-convert -f png -o $$o $$i', inkscape_name + ' --without-gui --file=$$i --export-png=$$o'],
-        rc_entry = [ r'\converter svg        png        "%%"    ""'],
+        rc_entry = [ r'''\converter svg        png        "%%"    "",
+\converter svgz       png        "%%"    ""'''],
         path = ['', inkscape_path])
 
     #