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 0113021b21dce95c1a4cec534a61732c2e75d5c8..aa581dfb877799f2bd8227dd2eae26a1b43ff401 100644 (file)
--- a/apt-pkg/acquire.h
+++ b/apt-pkg/acquire.h
@@ -1,6 +1,5 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: acquire.h,v 1.29.2.1 2003/12/24 23:09:17 mdz Exp $

 /* ######################################################################
 
    Acquire - File Acquiration
 /* ######################################################################
 
    Acquire - File Acquiration


@@ -68,9 +67,10 @@
 
 #include <apt-pkg/macros.h>
 #include <apt-pkg/weakptr.h>
 
 #include <apt-pkg/macros.h>
 #include <apt-pkg/weakptr.h>

+#include <apt-pkg/hashes.h>

 
 

-#include <vector>

 #include <string>
 #include <string>

+#include <vector>

 
 #include <stddef.h>
 #include <sys/time.h>
 
 #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) */
    /** \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:
    
 
    public:
    


@@ -111,6 +111,7 @@ class pkgAcquire
    struct MethodConfig;
    struct ItemDesc;
    friend class Item;
    struct MethodConfig;
    struct ItemDesc;
    friend class Item;

+   friend class pkgAcqMetaBase;

    friend class Queue;
 
    typedef std::vector<Item *>::iterator ItemIterator;
    friend class Queue;
 
    typedef std::vector<Item *>::iterator ItemIterator;


@@ -351,14 +352,24 @@ class pkgAcquire
     *  long as the pkgAcquire object does.
     *  \param Lock defines a lock file that should be acquired to ensure
     *  only one Acquire class is in action at the time or an empty string
     *  long as the pkgAcquire object does.
     *  \param Lock defines a lock file that should be acquired to ensure
     *  only one Acquire class is in action at the time or an empty string

-    *  if no lock file should be used.
+    *  if no lock file should be used. If set also all needed directories
+    *  will be created.

     */
     */

-   bool Setup(pkgAcquireStatus *Progress = NULL, std::string const &Lock = "");
+   APT_DEPRECATED bool Setup(pkgAcquireStatus *Progress = NULL, std::string const &Lock = "");

 
    void SetLog(pkgAcquireStatus *Progress) { Log = Progress; }
 
 
    void SetLog(pkgAcquireStatus *Progress) { Log = Progress; }
 

+   /** \brief acquire lock and perform directory setup
+    *
+    *  \param Lock defines a lock file that should be acquired to ensure
+    *  only one Acquire class is in action at the time or an empty string
+    *  if no lock file should be used. If set also all needed directories
+    *  will be created and setup.
+    */
+   bool GetLock(std::string const &Lock);
+

    /** \brief Construct a new pkgAcquire. */
    /** \brief Construct a new pkgAcquire. */

-   pkgAcquire(pkgAcquireStatus *Log) APT_DEPRECATED;
+   explicit pkgAcquire(pkgAcquireStatus *Log);

    pkgAcquire();
 
    /** \brief Destroy this pkgAcquire object.
    pkgAcquire();
 
    /** \brief Destroy this pkgAcquire object.


@@ -368,6 +379,8 @@ class pkgAcquire
     */
    virtual ~pkgAcquire();
 
     */
    virtual ~pkgAcquire();
 

+   private:
+   APT_HIDDEN void Initialize();

 };
 
 /** \brief Represents a single download source from which an item
 };
 
 /** \brief Represents a single download source from which an item


@@ -377,13 +390,13 @@ class pkgAcquire
  */
 struct pkgAcquire::ItemDesc : public WeakPointable
 {
  */
 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;
    std::string URI;

-   /** brief A description of this item. */
+   /** \brief description of this item. */

    std::string Description;
    std::string Description;

-   /** brief A shorter description of this item. */
+   /** \brief shorter description of this item. */

    std::string ShortDesc;
    std::string ShortDesc;

-   /** brief The underlying item which is to be downloaded. */
+   /** \brief underlying item which is to be downloaded. */

    Item *Owner;
 };
                                                                        /*}}}*/
    Item *Owner;
 };
                                                                        /*}}}*/


@@ -398,7 +411,7 @@ class pkgAcquire::Queue
    friend class pkgAcquire::Worker;
 
    /** \brief dpointer placeholder (for later in case we need it) */
    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;
 
    /** \brief The next queue in the pkgAcquire object's list of queues. */
    Queue *Next;


@@ -406,13 +419,26 @@ class pkgAcquire::Queue
    protected:
 
    /** \brief A single item placed in this 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 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
        */
       /** \brief Assign the ItemDesc portion of this QItem from
        *  another ItemDesc
        */


@@ -421,10 +447,24 @@ class pkgAcquire::Queue
         URI = I.URI;
         Description = I.Description;
         ShortDesc = I.ShortDesc;
         URI = I.URI;
         Description = I.Description;
         ShortDesc = I.ShortDesc;

+        Owners.clear();
+        Owners.push_back(I.Owner);

         Owner = 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;
 
    /** \brief The name of this queue. */
    std::string Name;
 


@@ -544,7 +584,7 @@ class pkgAcquire::Queue
     *  \param Name The name of the new queue.
     *  \param Owner The download process that owns the new 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.
 
    /** Shut down all the worker processes associated with this queue
     *  and empty the queue.


@@ -556,7 +596,7 @@ class pkgAcquire::Queue
 class pkgAcquire::UriIterator
 {
    /** \brief dpointer placeholder (for later in case we need it) */
 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;
 
    /** The next queue to iterate over. */
    pkgAcquire::Queue *CurQ;


@@ -577,7 +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;};
    
    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;};
    


@@ -585,22 +625,15 @@ class pkgAcquire::UriIterator
     *
     *  \param Q The queue over which this UriIterator should iterate.
     */
     *
     *  \param Q The queue over which this UriIterator should iterate.
     */

-   UriIterator(pkgAcquire::Queue *Q) : CurQ(Q), CurItem(0)
-   {
-      while (CurItem == 0 && CurQ != 0)
-      {
-        CurItem = CurQ->Items;
-        CurQ = CurQ->Next;
-      }
-   }   
-   virtual ~UriIterator() {};
+   explicit UriIterator(pkgAcquire::Queue *Q);
+   virtual ~UriIterator();

 };
                                                                        /*}}}*/
 /** \brief Information about the properties of a single acquire method.        {{{*/
 struct pkgAcquire::MethodConfig
 {
    /** \brief dpointer placeholder (for later in case we need it) */
 };
                                                                        /*}}}*/
 /** \brief Information about the properties of a single acquire method.        {{{*/
 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.
     *
    
    /** \brief The next link on the acquire method list.
     *


@@ -651,8 +684,7 @@ struct pkgAcquire::MethodConfig
     */
    MethodConfig();
 
     */
    MethodConfig();
 

-   /* \brief Destructor, empty currently */
-   virtual ~MethodConfig() {};
+   virtual ~MethodConfig();

 };
                                                                        /*}}}*/
 /** \brief A monitor object for downloads controlled by the pkgAcquire class.  {{{
 };
                                                                        /*}}}*/
 /** \brief A monitor object for downloads controlled by the pkgAcquire class.  {{{


@@ -662,7 +694,7 @@ struct pkgAcquire::MethodConfig
 class pkgAcquireStatus
 {
    /** \brief dpointer placeholder (for later in case we need it) */
 class pkgAcquireStatus
 {
    /** \brief dpointer placeholder (for later in case we need it) */

-   void *d;
+   void * const d;

 
    protected:
    
 
    protected:
    


@@ -798,7 +830,7 @@ class pkgAcquireStatus
    
    /** \brief Initialize all counters to 0 and the time to the current time. */
    pkgAcquireStatus();
    
    /** \brief Initialize all counters to 0 and the time to the current time. */
    pkgAcquireStatus();

-   virtual ~pkgAcquireStatus() {};
+   virtual ~pkgAcquireStatus();

 };
                                                                        /*}}}*/
 /** @} */
 };
                                                                        /*}}}*/
 /** @} */