On Mon, May 10, 2010 at 04:18:26PM +0100, Enrico Zini wrote:

> I am preparing a new version of libept after quite aggressively
> simplifying its code.

I've done some extra chopping, getting rid of the whole textsearch part
and replacing it with just a small handful of functions to locate the
apt-xapian-index database.

I'm attaching the updated patch. This should probably be all for
libept1; I'm also updating the soname because it quite seriously breaks
ABI.

At this point, I'd like to coordinate with you for when would be a good
time for uploading libept1 to sid.


Ciao,

Enrico

-- 
GPG key: 4096R/E7AD5568 2009-05-08 Enrico Zini <enr...@enricozini.org>
diff --git a/src/desc_render.cc b/src/desc_render.cc
index 0b0b0ef..647ec75 100644
--- a/src/desc_render.cc
+++ b/src/desc_render.cc
@@ -104,7 +104,7 @@ cw::fragment *make_tags_fragment(const pkgCache::PkgIterator &pkg)
     return NULL;
 
 #ifdef HAVE_EPT
-  typedef ept::debtags::Tag tag;
+  typedef std::string tag;
   using aptitude::apt::get_tags;
 #endif
 
@@ -122,7 +122,7 @@ cw::fragment *make_tags_fragment(const pkgCache::PkgIterator &pkg)
       for(set<tag>::const_iterator i = s->begin(); i != s->end(); ++i)
 	{
 #ifdef HAVE_EPT
-	  std::string name(i->fullname());
+	  std::string name(*i);
 #else
 	  const std::string name(i->str());
 #endif
diff --git a/src/generic/apt/matching/match.cc b/src/generic/apt/matching/match.cc
index f9febf5..946dc1a 100644
--- a/src/generic/apt/matching/match.cc
+++ b/src/generic/apt/matching/match.cc
@@ -30,7 +30,7 @@
 
 #include <cwidget/generic/util/transcode.h>
 
-#include <ept/textsearch/textsearch.h>
+#include <ept/axi/axi.h>
 #include <xapian/enquire.h>
 
 #include <algorithm>
@@ -48,6 +48,14 @@ namespace aptitude
   {
     namespace
     {
+      Xapian::docid docidByName(const Xapian::Database& db, const std::string& pkgname)
+      {
+        Xapian::PostingIterator i = db.postlist_begin("XP"+pkgname);
+	if (i == db.postlist_end("XP"+pkgname))
+		return 0;
+	else
+		return *i;
+      }
 
       /** \brief Evaluate any regular expression-based pattern.
        *
@@ -146,14 +154,14 @@ namespace aptitude
 	 *  matched by this pattern.
 	 */
 	bool maybe_contains_package(const pkgCache::PkgIterator &pkg,
-				    const boost::scoped_ptr<ept::textsearch::TextSearch> &db) const
+				    const boost::scoped_ptr<Xapian::Database> &db) const
 	{
 	  if(!matched_packages_valid || !db)
 	    return true;
 	  else
 	    return std::binary_search(matched_packages.begin(),
 				      matched_packages.end(),
-				      db->docidByName(pkg.Name()));
+				      docidByName(*db, pkg.Name()));
 	}
 
 	xapian_info()
@@ -275,7 +283,7 @@ namespace aptitude
 
       // Either a pointer to the TextSearch object, or NULL if it
       // couldn't be initialized.
-      boost::scoped_ptr<ept::textsearch::TextSearch> db;
+      boost::scoped_ptr<Xapian::Database> db;
 
       // Maps "top-level" patterns to their Xapian information (that
       // is, the corresponding query and/or query results).  Term hit
@@ -296,7 +304,7 @@ namespace aptitude
       {
 	try
 	  {
-	    db.reset(new ept::textsearch::TextSearch);
+	    db.reset(new Xapian::Database(ept::axi::path_db()));
 	  }
 	catch(...)
 	  {
@@ -304,7 +312,7 @@ namespace aptitude
 	  }
       }
 
-      const boost::scoped_ptr<ept::textsearch::TextSearch> &get_db() const
+      const boost::scoped_ptr<Xapian::Database> &get_db() const
       {
 	return db;
       }
@@ -343,8 +351,8 @@ namespace aptitude
 	if(debug)
 	  std::cout << "Searching for " << prefix << " as a term pefix." << std::endl;
 
-	Xapian::docid pkg_docid(db->docidByName(pkg.Name()));
-	const Xapian::Database xapian_db(db->db());
+	Xapian::docid pkg_docid(docidByName(*db, pkg.Name()));
+	const Xapian::Database& xapian_db = *db;
 
 
 	const std::map<std::string, std::vector<Xapian::docid> >::iterator
@@ -410,7 +418,7 @@ namespace aptitude
 			const std::string &term,
 			bool debug)
       {
-	Xapian::docid pkg_docid(db->docidByName(pkg.Name()));
+	Xapian::docid pkg_docid(docidByName(*db, pkg.Name()));
 
 	const std::map<std::string, std::vector<Xapian::docid> >::iterator
 	  found = matched_terms.find(term);
@@ -437,7 +445,7 @@ namespace aptitude
 	      {
 		const std::string &currTerm(**termIt);
 
-		Xapian::Database xapian_db(db->db());
+		Xapian::Database& xapian_db = *db;
 
 		Xapian::PostingIterator
 		  postingsBegin = xapian_db.postlist_begin(currTerm),
@@ -476,7 +484,7 @@ namespace aptitude
 
 	    xapian_info &rval(inserted->second);
 	    if(db.get() != NULL)
-	      rval.setup(db->db(), toplevel, debug);
+	      rval.setup(*db, toplevel, debug);
 
 	    return rval;
 	  }
@@ -1373,7 +1381,7 @@ namespace aptitude
 	      pkgCache::PkgIterator pkg(target.get_package_iterator(cache));
 
 #ifdef HAVE_EPT
-	      typedef ept::debtags::Tag tag;
+	      typedef std::string tag;
 	      using aptitude::apt::get_tags;
 #endif
 
@@ -1390,7 +1398,7 @@ namespace aptitude
 	      for(std::set<tag>::const_iterator i=tags->begin(); i!=tags->end(); ++i)
 		{
 #ifdef HAVE_EPT
-		  std::string name(i->fullname());
+		  std::string name(*i);
 #else
 		  const std::string name = i->str().c_str();
 #endif
diff --git a/src/generic/apt/tags.cc b/src/generic/apt/tags.cc
index 36de6bc..3e19671 100644
--- a/src/generic/apt/tags.cc
+++ b/src/generic/apt/tags.cc
@@ -39,6 +39,8 @@
 #include <apt-pkg/pkgrecords.h>
 #include <apt-pkg/tagfile.h>
 
+#include <ept/debtags/debtags.h>
+
 #include <cwidget/generic/util/eassert.h>
 
 using namespace std;
@@ -350,10 +352,10 @@ namespace aptitude
 	}
     }
 
-    const std::set<ept::debtags::Tag> get_tags(const pkgCache::PkgIterator &pkg)
+    const std::set<std::string> get_tags(const pkgCache::PkgIterator &pkg)
     {
       if(!apt_cache_file || !debtagsDB)
-	return std::set<ept::debtags::Tag>();
+	return std::set<std::string>();
 
       // TODO: handle !hasData() here.
       try
@@ -362,7 +364,7 @@ namespace aptitude
 	}
       catch(std::exception &ex)
 	{
-	  return std::set<ept::debtags::Tag>();
+	  return std::set<std::string>();
 	}
     }
   }
diff --git a/src/generic/apt/tags.h b/src/generic/apt/tags.h
index 2b8a36e..40411cd 100644
--- a/src/generic/apt/tags.h
+++ b/src/generic/apt/tags.h
@@ -225,15 +225,13 @@ std::string tag_description(const std::string &tag);
 
 #include <apt-pkg/pkgcache.h>
 
-#include <ept/debtags/debtags.h>
-
 #include <set>
 
 namespace aptitude
 {
   namespace apt
   {
-    const std::set<ept::debtags::Tag> get_tags(const pkgCache::PkgIterator &pkg);
+    const std::set<std::string> get_tags(const pkgCache::PkgIterator &pkg);
 
     /** \brief Initialize the cache of debtags information. */
     void load_tags();
diff --git a/src/gtk/gui.cc b/src/gtk/gui.cc
index cb450b1..2e338c6 100644
--- a/src/gtk/gui.cc
+++ b/src/gtk/gui.cc
@@ -1272,7 +1272,7 @@ namespace gui
       return where;
 
 #ifdef HAVE_EPT
-    typedef ept::debtags::Tag tag;
+    typedef std::string tag;
     using aptitude::apt::get_tags;
 
     const std::set<tag> realS(get_tags(pkg));
@@ -1292,7 +1292,7 @@ namespace gui
 	    it != s->end(); ++it)
 	  {
 #ifdef HAVE_EPT
-	    const std::string name(it->fullname());
+	    const std::string name(*it);
 #else
 	    const std::string name(it->str());
 #endif
diff --git a/src/pkg_grouppolicy.cc b/src/pkg_grouppolicy.cc
index 93d6538..46fcda5 100644
--- a/src/pkg_grouppolicy.cc
+++ b/src/pkg_grouppolicy.cc
@@ -1350,7 +1350,7 @@ public:
 			   pkg_subtree *root)
   {
 #ifdef HAVE_EPT
-    typedef ept::debtags::Tag tag;
+    typedef std::string tag;
     using aptitude::apt::get_tags;
 #endif
 
@@ -1368,18 +1368,22 @@ public:
 	ti != tags->end(); ++ti)
       {
 #ifdef HAVE_EPT
-	const ept::debtags::Facet f = ti->facet();
-
-	const std::string thisfacet(f.name());
+	size_t fpos = ti->find("::");
+	std::string f;
+	if (fpos == string::npos)
+		f = "legacy";
+	else
+		f = ti->substr(0, fpos);
+	
+	const std::string thisfacet(f);
 
 	// Don't create items for tags that aren't in our facet.
-	if(f.name() != facet)
+	if(f != facet)
 	  return;
 
 	// TODO: split up by sub-facet or whatever the debtags guys
 	// call it?
-	std::string tagname;
-	ti->name(tagname);
+	std::string tagname = *ti;
 
 #else // HAVE_EPT
 	tag::const_iterator j = ti->begin();
@@ -1407,11 +1411,9 @@ public:
 	if(found == children.end())
 	  {
 #ifdef HAVE_EPT
-	    std::string desc;
-	    ti->longDescription(desc);
-
-	    std::string shortdesc;
-	    ti->shortDescription(shortdesc);
+            // FIXME: const ept::debtags::voc::TagData* td = vocabulary.tagData(*ti);
+	    std::string desc = /* FIXME td ? td->longDescription() : */ "description not available";
+	    std::string shortdesc = /* FIXME td ? td->shortDescription() : */ *ti;
 #else // HAVE_EPT
 	    string desc = tag_description(ti->str());
 	    string shortdesc(desc, 0, desc.find('\n'));
@@ -1491,7 +1493,7 @@ public:
 			   pkg_subtree *root)
   {
 #ifdef HAVE_EPT
-    typedef ept::debtags::Tag tag;
+    typedef std::string tag;
     using aptitude::apt::get_tags;
 #endif
 
@@ -1528,9 +1530,15 @@ public:
 	ti != tags->end(); ++ti)
       {
 #ifdef HAVE_EPT
-	const ept::debtags::Facet f(ti->facet());
-	std::string thisfacet(f.name());
-	std::string thistag(ti->name());
+	size_t fpos = ti->find("::");
+	std::string f;
+	if (fpos == string::npos)
+		f = "legacy";
+	else
+		f = ti->substr(0, fpos);
+
+	std::string thisfacet(f);
+	std::string thistag(*ti);
 #else // HAVE_EPT
 	tag::const_iterator j = ti->begin();
 
@@ -1558,8 +1566,9 @@ public:
 	if(facetfound == children.end())
 	  {
 #ifdef HAVE_EPT
-	    string desc(f.longDescription());
-	    string shortdesc(f.shortDescription());
+            // FIXME const ept::debtags::voc::FacetData* fd = vocabulary.facetData(f);
+	    string desc(/* FIXME fd ? fd->longDescription() : */ "long description not available");
+	    string shortdesc(/* FIXME fd ? fd->shortDescription() : */ f);
 #else // HAVE_EPT
 	    string desc = facet_description(thisfacet);
 	    string shortdesc(desc, 0, desc.find('\n'));
@@ -1596,8 +1605,9 @@ public:
 	if(tagfound == tagchildren->end())
 	  {
 #ifdef HAVE_EPT
-	    string desc(ti->longDescription());
-	    string shortdesc(ti->shortDescription());
+            // FIXME const ept::debtags::voc::TagData* td = vocabulary.tagData(*ti);
+	    std::string desc = /* FIXME td ? td->longDescription() : */ "description not available";
+	    std::string shortdesc = /* FIXME td ? td->shortDescription() : */ *ti;
 #else // HAVE_EPT
 	    string desc = tag_description(ti->str());
 	    string shortdesc(desc, 0, desc.find('\n'));

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