Activate ability to write CSS to a separate file. There is no UI

for this yet, however.

Includes elements of a patch by Rob Oakes.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@40409 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index dd76314f059b959a432685959c141fb213fd4232..8c1ea58e4aaef5fa6eed8e94180fa654493a7c2c 100644 (file)
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -1772,15 +1772,18 @@ void Buffer::writeLyXHTMLSource(odocstream & os,
                         html::htmlize(doctitle, XHTMLStream::ESCAPE_ALL))
                   << "</title>\n";
 
-               os << "\n<!-- Text Class Preamble -->\n"
-                  << features.getTClassHTMLPreamble()
-                  << "\n<!-- Preamble Snippets -->\n"
-                  << from_utf8(features.getPreambleSnippets());
+               docstring styles = features.getTClassHTMLPreamble();
+               if (!styles.empty())
+                       os << "\n<!-- Text Class Preamble -->\n" << styles << '\n';
+
+               styles = from_utf8(features.getPreambleSnippets());
+               if (!styles.empty())
+                       os << "\n<!-- Preamble Snippets -->\n" << styles << '\n';
 
                // we will collect CSS information in a stream, and then output it
                // either here, as part of the header, or else in a separate file.
                odocstringstream css;
-               docstring styles = from_utf8(features.getCSSSnippets());
+               styles = from_utf8(features.getCSSSnippets());
                if (!styles.empty())
                        css << "/* LyX Provided Styles */\n" << styles << '\n';
 
@@ -1805,9 +1808,29 @@ void Buffer::writeLyXHTMLSource(odocstream & os,
                
                docstring const dstyles = css.str();
                if (!dstyles.empty()) {
-                       os << "<style type='text/css'>\n"
-                                << dstyles
-                                << "\n</style>\n";
+                       bool written = false;
+                       if (params().html_css_as_file) {
+                               // open a file for CSS info
+                               ofdocstream ocss;
+                               string const fcssname = addName(temppath(), "docstyle.css");
+                               FileName const fcssfile = FileName(fcssname);
+                               if (openFileWrite(ocss, fcssfile)) {
+                                       ocss << dstyles;
+                                       ocss.close();
+                                       written = true;
+                                       // write link to header
+                                       os << "<link rel='stylesheet' href='docstyle.css' type='text/css' />\n";
+                                       // register file
+                                       runparams.exportdata->addExternalFile("xhtml", fcssfile);
+                               }
+                       }
+                       // we are here if the CSS is supposed to be written to the header
+                       // or if we failed to write it to an external file.
+                       if (!written) {
+                               os << "<style type='text/css'>\n"
+                                        << dstyles
+                                        << "\n</style>\n";
+                       }
                }
                os << "</head>\n";
        }