From feab34c5216941ca95aae1a389238a77b662d1de Mon Sep 17 00:00:00 2001
From: Michael Vogt <mvo@ubuntu.com>
Date: Tue, 22 Apr 2014 17:59:09 +0200
Subject: add support for apt-get build-dep foo.dsc

---
 apt-pkg/deb/debsrcrecords.cc | 19 +++++++++++++++++++
 apt-pkg/deb/debsrcrecords.h  |  7 +++++++
 apt-pkg/tagfile.cc           | 11 +++++++++++
 apt-pkg/tagfile.h            |  2 ++
 4 files changed, 39 insertions(+)

(limited to 'apt-pkg')

diff --git a/apt-pkg/deb/debsrcrecords.cc b/apt-pkg/deb/debsrcrecords.cc
index b09588dd3..fc748c40f 100644
--- a/apt-pkg/deb/debsrcrecords.cc
+++ b/apt-pkg/deb/debsrcrecords.cc
@@ -18,6 +18,7 @@
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/srcrecords.h>
 #include <apt-pkg/tagfile.h>
+#include <apt-pkg/gpgv.h>
 
 #include <ctype.h>
 #include <stdlib.h>
@@ -189,3 +190,21 @@ debSrcRecordParser::~debSrcRecordParser()
    delete[] Buffer;
 }
 									/*}}}*/
+
+
+debDscRecordParser::debDscRecordParser(std::string const &DscFile)
+   : debSrcRecordParser(DscFile, NULL)
+{
+   // support clear signed files
+   if (OpenMaybeClearSignedFile(DscFile, Fd) == false)
+   {
+      _error->Error("Failed to open %s", DscFile.c_str());
+      return;
+   }
+
+   // re-init to ensure the updated Fd is used
+   Tags.Init(&Fd);
+   // read the first (and only) record
+   Step();
+
+}
diff --git a/apt-pkg/deb/debsrcrecords.h b/apt-pkg/deb/debsrcrecords.h
index b65d1480b..0cd664818 100644
--- a/apt-pkg/deb/debsrcrecords.h
+++ b/apt-pkg/deb/debsrcrecords.h
@@ -26,6 +26,7 @@ class debSrcRecordParser : public pkgSrcRecords::Parser
    /** \brief dpointer placeholder (for later in case we need it) */
    void *d;
 
+ protected:
    FileFd Fd;
    pkgTagFile Tags;
    pkgTagSection Sect;
@@ -60,4 +61,10 @@ class debSrcRecordParser : public pkgSrcRecords::Parser
    virtual ~debSrcRecordParser();
 };
 
+class debDscRecordParser : public debSrcRecordParser
+{
+ public:
+   debDscRecordParser(std::string const &DscFile);
+};
+
 #endif
diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 91d176e3c..009ed7d74 100644
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -51,12 +51,23 @@ public:
 // ---------------------------------------------------------------------
 /* */
 pkgTagFile::pkgTagFile(FileFd *pFd,unsigned long long Size)
+   : d(NULL)
+{
+   Init(pFd, Size);
+}
+
+void pkgTagFile::Init(FileFd *pFd,unsigned long long Size)
 {
    /* The size is increased by 4 because if we start with the Size of the
       filename we need to try to read 1 char more to see an EOF faster, 1
       char the end-pointer can be on and maybe 2 newlines need to be added
       to the end of the file -> 4 extra chars */
    Size += 4;
+   if(d != NULL)
+   {
+      free(d->Buffer);
+      delete d;
+   }
    d = new pkgTagFilePrivate(pFd, Size);
 
    if (d->Fd.IsOpen() == false)
diff --git a/apt-pkg/tagfile.h b/apt-pkg/tagfile.h
index d5b62e76d..d1a24ba45 100644
--- a/apt-pkg/tagfile.h
+++ b/apt-pkg/tagfile.h
@@ -105,6 +105,8 @@ class pkgTagFile
    unsigned long Offset();
    bool Jump(pkgTagSection &Tag,unsigned long long Offset);
 
+   void Init(FileFd *F,unsigned long long Size = 32*1024);
+
    pkgTagFile(FileFd *F,unsigned long long Size = 32*1024);
    virtual ~pkgTagFile();
 };
-- 
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