just-in-time creation for (explicit) negative deps

[apt.git] / apt-pkg / acquire.h

diff --git a/apt-pkg/acquire.h b/apt-pkg/acquire.h
index fc90624e1e6193946094e48ee2d2e3f046c57a82..aa581dfb877799f2bd8227dd2eae26a1b43ff401 100644 (file)
--- a/apt-pkg/acquire.h
+++ b/apt-pkg/acquire.h
@@ -1,6 +1,5 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: acquire.h,v 1.29.2.1 2003/12/24 23:09:17 mdz Exp $
 /* ######################################################################
 
    Acquire - File Acquiration
@@ -68,9 +67,10 @@
 
 #include <apt-pkg/macros.h>
 #include <apt-pkg/weakptr.h>
+#include <apt-pkg/hashes.h>
 
-#include <vector>
 #include <string>
+#include <vector>
 
 #include <stddef.h>
 #include <sys/time.h>
@@ -101,7 +101,7 @@ class pkgAcquire
    /** \brief FD of the Lock file we acquire in Setup (if any) */
    int LockFD;
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    public:
    
@@ -369,7 +369,7 @@ class pkgAcquire
    bool GetLock(std::string const &Lock);
 
    /** \brief Construct a new pkgAcquire. */
-   pkgAcquire(pkgAcquireStatus *Log);
+   explicit pkgAcquire(pkgAcquireStatus *Log);
    pkgAcquire();
 
    /** \brief Destroy this pkgAcquire object.
@@ -390,13 +390,13 @@ class pkgAcquire
  */
 struct pkgAcquire::ItemDesc : public WeakPointable
 {
-   /** \brief The URI from which to download this item. */
+   /** \brief URI from which to download this item. */
    std::string URI;
-   /** brief A description of this item. */
+   /** \brief description of this item. */
    std::string Description;
-   /** brief A shorter description of this item. */
+   /** \brief shorter description of this item. */
    std::string ShortDesc;
-   /** brief The underlying item which is to be downloaded. */
+   /** \brief underlying item which is to be downloaded. */
    Item *Owner;
 };
                                                                        /*}}}*/
@@ -411,7 +411,7 @@ class pkgAcquire::Queue
    friend class pkgAcquire::Worker;
 
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    /** \brief The next queue in the pkgAcquire object's list of queues. */
    Queue *Next;
@@ -419,13 +419,26 @@ class pkgAcquire::Queue
    protected:
 
    /** \brief A single item placed in this queue. */
-   struct QItem : pkgAcquire::ItemDesc
+   struct QItem : public WeakPointable
    {
       /** \brief The next item in the queue. */
       QItem *Next;
       /** \brief The worker associated with this item, if any. */
       pkgAcquire::Worker *Worker;
 
+      /** \brief The URI from which to download this item. */
+      std::string URI;
+      /** \brief A description of this item. */
+      std::string Description;
+      /** \brief A shorter description of this item. */
+      std::string ShortDesc;
+      /** \brief The underlying items interested in the download */
+      std::vector<Item*> Owners;
+      // both, backward compatibility and easy access as syncing is interal
+      Item * Owner;
+
+      typedef std::vector<Item*>::const_iterator owner_iterator;
+
       /** \brief Assign the ItemDesc portion of this QItem from
        *  another ItemDesc
        */
@@ -434,10 +447,24 @@ class pkgAcquire::Queue
         URI = I.URI;
         Description = I.Description;
         ShortDesc = I.ShortDesc;
+        Owners.clear();
+        Owners.push_back(I.Owner);
         Owner = I.Owner;
       };
+
+      /** @return the sum of all expected hashes by all owners */
+      HashStringList GetExpectedHashes() const;
+
+      /** @return smallest maximum size of all owners */
+      unsigned long long GetMaximumSize() const;
+
+      /** \brief get partial files in order */
+      void SyncDestinationFiles() const;
+
+      /** @return the custom headers to use for this item */
+      std::string Custom600Headers() const;
    };
-   
+
    /** \brief The name of this queue. */
    std::string Name;
 
@@ -557,7 +584,7 @@ class pkgAcquire::Queue
     *  \param Name The name of the new queue.
     *  \param Owner The download process that owns the new queue.
     */
-   Queue(std::string Name,pkgAcquire *Owner);
+   Queue(std::string const &Name,pkgAcquire * const Owner);
 
    /** Shut down all the worker processes associated with this queue
     *  and empty the queue.
@@ -569,7 +596,7 @@ class pkgAcquire::Queue
 class pkgAcquire::UriIterator
 {
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    /** The next queue to iterate over. */
    pkgAcquire::Queue *CurQ;
@@ -590,7 +617,7 @@ class pkgAcquire::UriIterator
       }
    };
    
-   inline pkgAcquire::ItemDesc const *operator ->() const {return CurItem;};
+   inline pkgAcquire::Queue::QItem const *operator ->() const {return CurItem;};
    inline bool operator !=(UriIterator const &rhs) const {return rhs.CurQ != CurQ || rhs.CurItem != CurItem;};
    inline bool operator ==(UriIterator const &rhs) const {return rhs.CurQ == CurQ && rhs.CurItem == CurItem;};
    
@@ -598,14 +625,7 @@ class pkgAcquire::UriIterator
     *
     *  \param Q The queue over which this UriIterator should iterate.
     */
-   UriIterator(pkgAcquire::Queue *Q) : d(NULL), CurQ(Q), CurItem(0)
-   {
-      while (CurItem == 0 && CurQ != 0)
-      {
-        CurItem = CurQ->Items;
-        CurQ = CurQ->Next;
-      }
-   }   
+   explicit UriIterator(pkgAcquire::Queue *Q);
    virtual ~UriIterator();
 };
                                                                        /*}}}*/
@@ -613,7 +633,7 @@ class pkgAcquire::UriIterator
 struct pkgAcquire::MethodConfig
 {
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
    
    /** \brief The next link on the acquire method list.
     *
@@ -674,7 +694,7 @@ struct pkgAcquire::MethodConfig
 class pkgAcquireStatus
 {
    /** \brief dpointer placeholder (for later in case we need it) */
-   void *d;
+   void * const d;
 
    protected: