Access to changelogs via record parser interface

Add RecordParser::Changelog() and SrcRecordParser::Changelog() functions
that returns raw changelog text.

libapt-pkg SONAME changed according to libtool versioning rules.

Signed-off-by: Alexey I. Froloff <raorn@altlinux.org>

apt/apt-pkg/Makefile.am

@@ -2,7 +2,7 @@
 lib_LTLIBRARIES = libapt-pkg.la
 
 libapt_pkg_la_LIBADD = @RPMLIBS@
-libapt_pkg_la_LDFLAGS = -version-info 2:0:0 -release @GLIBC_VER@-@LIBSTDCPP_VER@
+libapt_pkg_la_LDFLAGS = -version-info 3:0:1 -release @GLIBC_VER@-@LIBSTDCPP_VER@
 
 AM_CPPFLAGS = -DLIBDIR=\"$(libdir)\"
 

apt/apt-pkg/deb/debrecords.cc

@@ -92,6 +92,14 @@ string debRecordParser::LongDesc()
    return Section.FindS("Description");
 }
 									/*}}}*/
+// RecordParser::Changelog - Return package changelog if any		/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+string debRecordParser::Changelog()
+{
+   return string("");
+}
+									/*}}}*/
 // RecordParser::SourcePkg - Return the source package name if any	/*{{{*/
 // ---------------------------------------------------------------------
 /* */

apt/apt-pkg/deb/debrecords.h

@@ -44,6 +44,7 @@ class debRecordParser : public pkgRecords::Parser
    virtual string ShortDesc();
    virtual string LongDesc();
    virtual string Name();
+   virtual string Changelog();
 
    virtual void GetRec(const char *&Start,const char *&Stop);
    

apt/apt-pkg/deb/debsrcrecords.h

@@ -38,6 +38,7 @@ class debSrcRecordParser : public pkgSrcRecords::Parser
    virtual string Version() const {return Sect.FindS("Version");};
    virtual string Maintainer() const {return Sect.FindS("Maintainer");};
    virtual string Section() const {return Sect.FindS("Section");};
+   virtual string Changelog() const {return string("");};
    virtual const char **Binaries();
    virtual bool BuildDepends(vector<BuildDepRec> &BuildDeps, bool ArchOnly);
    virtual unsigned long Offset() {return iOffset;};

apt/apt-pkg/pkgrecords.h

@@ -67,6 +67,7 @@ class pkgRecords::Parser
    virtual string ShortDesc() {return string();};
    virtual string LongDesc() {return string();};
    virtual string Name() {return string();};
+   virtual string Changelog() {return string();};
    
    // The record in binary form
    virtual void GetRec(const char *&Start,const char *&Stop) {Start = Stop = 0;};

apt/apt-pkg/rpm/rpmrecords.cc

@@ -170,6 +170,27 @@ string rpmRecordParser::LongDesc()
    
    return Ret;
 }
+									/*}}}*/
+// RecordParser::Changelog - Return package changelog if any		/*{{{*/
+// -----------------------------------------------
+string rpmRecordParser::Changelog()
+{
+   char *str;
+   string rval("");
+
+   str = headerSprintf(HeaderP,
+         "[* %{CHANGELOGTIME:day} %{CHANGELOGNAME}\n%{CHANGELOGTEXT}\n\n]",
+         rpmTagTable, rpmHeaderFormats, NULL);
+
+   if (str && *str) {
+	  rval = (const char *)str;
+   }
+   if (str)
+      str = (char *)_free(str);
+
+   return rval;
+}
+
 									/*}}}*/
 // RecordParser::SourcePkg - Return the source package name if any	/*{{{*/
 // ---------------------------------------------------------------------

apt/apt-pkg/rpm/rpmrecords.h

@@ -59,6 +59,7 @@ class rpmRecordParser : public pkgRecords::Parser
    virtual string ShortDesc();
    virtual string LongDesc();
    virtual string Name();
+   virtual string Changelog();
    
    inline Header GetRecord() { return HeaderP; };
 

apt/apt-pkg/rpm/rpmsrcrecords.cc

@@ -191,6 +191,26 @@ string rpmSrcRecordParser::Section() const
    return string(rc?str:"");
 }
 
+// SrcRecordParser::Changelog - Package changelog
+// ----------------------------------------------
+string rpmSrcRecordParser::Changelog() const
+{
+   char *str;
+   string rval("");
+
+   str = headerSprintf(HeaderP,
+         "[* %{CHANGELOGTIME:day} %{CHANGELOGNAME}\n%{CHANGELOGTEXT}\n\n]",
+         rpmTagTable, rpmHeaderFormats, NULL);
+
+   if (str && *str) {
+	  rval = (const char *)str;
+   }
+   if (str)
+      str = (char *)_free(str);
+
+   return rval;
+}
+
 unsigned long rpmSrcRecordParser::Offset() 
 {
     return Handler->Offset();

apt/apt-pkg/rpm/rpmsrcrecords.h

@@ -48,6 +48,7 @@ public:
    virtual string Version() const;
    virtual string Maintainer() const;
    virtual string Section() const;
+   virtual string Changelog() const;
    virtual const char **Binaries();
    virtual unsigned long Offset();
    virtual string AsStr();

apt/apt-pkg/srcrecords.h

@@ -70,6 +70,7 @@ class pkgSrcRecords
       virtual string Version() const = 0;
       virtual string Maintainer() const = 0;
       virtual string Section() const = 0;
+      virtual string Changelog() const = 0;
       virtual const char **Binaries() = 0;   // Ownership does not transfer
 
       virtual bool BuildDepends(vector<BuildDepRec> &BuildDeps, bool ArchOnly) = 0;