edsp: use a stanza based interface for solution writing

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

diff --git a/apt-pkg/edsp.h b/apt-pkg/edsp.h
index fd4436f60086217b97fcd81984336e170f38c05c..57d4214e80635fd62ec9b057ef6b4fd4d869c7a5 100644 (file)
--- a/apt-pkg/edsp.h
+++ b/apt-pkg/edsp.h
@@ -9,11 +9,16 @@
 #ifndef PKGLIB_EDSP_H
 #define PKGLIB_EDSP_H
 
 #ifndef PKGLIB_EDSP_H
 #define PKGLIB_EDSP_H
 

-#include <apt-pkg/pkgcache.h>

 #include <apt-pkg/cacheset.h>
 #include <apt-pkg/cacheset.h>

+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
+#include <apt-pkg/macros.h>
+
+#include <stdio.h>

 
 #include <list>
 #include <string>
 
 #include <list>
 #include <string>

+#include <vector>

 
 #ifndef APT_8_CLEANER_HEADERS
 #include <apt-pkg/depcache.h>
 
 #ifndef APT_8_CLEANER_HEADERS
 #include <apt-pkg/depcache.h>


@@ -23,26 +28,18 @@
 class pkgDepCache;
 class OpProgress;
 
 class pkgDepCache;
 class OpProgress;
 

-class EDSP                                                             /*{{{*/
+namespace EDSP                                                         /*{{{*/

 {
 {

-       // we could use pkgCache::DepType and ::Priority, but these would be localized strings…
-       static const char * const PrioMap[];
-       static const char * const DepMap[];
-
-       bool static ReadLine(int const input, std::string &line);
-       bool static StringToBool(char const *answer, bool const defValue);
-
-       void static WriteScenarioVersion(pkgDepCache &Cache, FILE* output,
-                                        pkgCache::PkgIterator const &Pkg,
-                                        pkgCache::VerIterator const &Ver);
-       void static WriteScenarioDependency(pkgDepCache &Cache, FILE* output,
-                                           pkgCache::PkgIterator const &Pkg,
-                                           pkgCache::VerIterator const &Ver);
-       void static WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
-                                                  pkgCache::PkgIterator const &Pkg,
-                                                  pkgCache::VerIterator const &Ver,
-                                                  APT::PackageSet const &pkgset);
-public:
+       namespace Request
+       {
+          enum Flags
+          {
+             AUTOREMOVE = (1 << 0), /*!< removal of unneeded packages should be performed */
+             UPGRADE_ALL = (1 << 1), /*!< upgrade all installed packages, like 'apt-get full-upgrade' without forbid flags */
+             FORBID_NEW_INSTALL = (1 << 2), /*!< forbid the resolver to install new packages */
+             FORBID_REMOVE = (1 << 3), /*!< forbid the resolver to remove packages */
+          };
+       }

        /** \brief creates the EDSP request stanza
         *
         *  In the EDSP protocol the first thing send to the resolver is a stanza
        /** \brief creates the EDSP request stanza
         *
         *  In the EDSP protocol the first thing send to the resolver is a stanza


@@ -52,18 +49,19 @@ public:
         *
         *  \param Cache in which the request is encoded
         *  \param output is written to this "file"
         *
         *  \param Cache in which the request is encoded
         *  \param output is written to this "file"

-        *  \param upgrade is true if it is an request like apt-get upgrade
-        *  \param distUpgrade is true if it is a request like apt-get dist-upgrade
-        *  \param autoRemove is true if removal of unneeded packages should be performed
+        *  \param flags effecting the request documented in #EDSP::Request::Flags

         *  \param Progress is an instance to report progress to
         *
         *  \return true if request was composed successfully, otherwise false
         */
         *  \param Progress is an instance to report progress to
         *
         *  \return true if request was composed successfully, otherwise false
         */

-       bool static WriteRequest(pkgDepCache &Cache, FILE* output,
+       bool WriteRequest(pkgDepCache &Cache, FileFd &output,
+                                unsigned int const flags = 0,
+                               OpProgress *Progress = NULL);
+       bool WriteRequest(pkgDepCache &Cache, FILE* output,

                                 bool const upgrade = false,
                                 bool const distUpgrade = false,
                                 bool const autoRemove = false,
                                 bool const upgrade = false,
                                 bool const distUpgrade = false,
                                 bool const autoRemove = false,

-                               OpProgress *Progress = NULL);
+                               OpProgress *Progress = NULL) APT_DEPRECATED_MSG("Use FileFd-based interface instead");

 
        /** \brief creates the scenario representing the package universe
         *
 
        /** \brief creates the scenario representing the package universe
         *


@@ -82,7 +80,8 @@ public:
         *
         *  \return true if universe was composed successfully, otherwise false
         */
         *
         *  \return true if universe was composed successfully, otherwise false
         */

-       bool static WriteScenario(pkgDepCache &Cache, FILE* output, OpProgress *Progress = NULL);
+       bool WriteScenario(pkgDepCache &Cache, FileFd &output, OpProgress *Progress = NULL);
+       bool WriteScenario(pkgDepCache &Cache, FILE* output, OpProgress *Progress = NULL) APT_DEPRECATED_MSG("Use FileFd-based interface instead");

 
        /** \brief creates a limited scenario representing the package universe
         *
 
        /** \brief creates a limited scenario representing the package universe
         *


@@ -99,9 +98,12 @@ public:
         *
         *  \return true if universe was composed successfully, otherwise false
         */
         *
         *  \return true if universe was composed successfully, otherwise false
         */

-       bool static WriteLimitedScenario(pkgDepCache &Cache, FILE* output,
-                                        APT::PackageSet const &pkgset,
+       bool WriteLimitedScenario(pkgDepCache &Cache, FileFd &output,
+                                        std::vector<bool> const &pkgset,

                                         OpProgress *Progress = NULL);
                                         OpProgress *Progress = NULL);

+       bool WriteLimitedScenario(pkgDepCache &Cache, FILE* output,
+                                        APT::PackageSet const &pkgset,
+                                        OpProgress *Progress = NULL) APT_DEPRECATED_MSG("Use FileFd-based interface instead");

 
        /** \brief waits and acts on the information returned from the solver
         *
 
        /** \brief waits and acts on the information returned from the solver
         *


@@ -116,7 +118,7 @@ public:
         *
         *  \return true if a solution is found and applied correctly, otherwise false
         */
         *
         *  \return true if a solution is found and applied correctly, otherwise false
         */

-       bool static ReadResponse(int const input, pkgDepCache &Cache, OpProgress *Progress = NULL);
+       bool ReadResponse(int const input, pkgDepCache &Cache, OpProgress *Progress = NULL);

 
        /** \brief search and read the request stanza for action later
         *
 
        /** \brief search and read the request stanza for action later
         *


@@ -134,7 +136,9 @@ public:
         *
         *  \return true if the request could be found and worked on, otherwise false
         */
         *
         *  \return true if the request could be found and worked on, otherwise false
         */

-       bool static ReadRequest(int const input, std::list<std::string> &install,
+       bool ReadRequest(int const input, std::list<std::string> &install,
+                       std::list<std::string> &remove, unsigned int &flags);
+       APT_DEPRECATED_MSG("use the flag-based version instead") bool ReadRequest(int const input, std::list<std::string> &install,

                        std::list<std::string> &remove, bool &upgrade,
                        bool &distUpgrade, bool &autoRemove);
 
                        std::list<std::string> &remove, bool &upgrade,
                        bool &distUpgrade, bool &autoRemove);
 


@@ -150,23 +154,24 @@ public:
         *
         *  \return false if the request couldn't be applied, true otherwise
         */
         *
         *  \return false if the request couldn't be applied, true otherwise
         */

-       bool static ApplyRequest(std::list<std::string> const &install,
+       bool ApplyRequest(std::list<std::string> const &install,

                                 std::list<std::string> const &remove,
                                 pkgDepCache &Cache);
 
                                 std::list<std::string> const &remove,
                                 pkgDepCache &Cache);
 

-       /** \brief encodes the changes in the Cache as a EDSP solution
+       /** \brief formats a solution stanza for the given version

         *
         *

-        *  The markers in the Cache are observed and send to given
-        *  file. The solution isn't checked for consistency or alike,
-        *  so even broken solutions can be written successfully,
-        *  but the front-end revicing it will properly fail then.
+        *  EDSP uses a simple format for reporting solutions:
+        *  A single required field name with an ID as value.
+        *  Additional fields might appear as debug aids.

         *
         *

-        *  \param Cache which represents the solution
-        *  \param output to write the stanzas forming the solution to
+        *  \param output to write the stanza forming the solution to
+        *  \param Type of the stanza, used as field name
+        *  \param Ver this stanza applies to

         *
         *

-        *  \return true if solution could be written, otherwise false
+        *  \return true if stanza could be written, otherwise false

         */
         */

-       bool static WriteSolution(pkgDepCache &Cache, FILE* output);
+       bool WriteSolutionStanza(FileFd &output, char const * const Type, pkgCache::VerIterator const &Ver);
+       bool WriteSolution(pkgDepCache &Cache, FILE* output) APT_DEPRECATED_MSG("Use FileFd-based single-stanza interface instead");

 
        /** \brief sends a progress report
         *
 
        /** \brief sends a progress report
         *


@@ -174,7 +179,8 @@ public:
         *  \param message the solver wants the user to see
         *  \param output the front-end listens for progress report
         */
         *  \param message the solver wants the user to see
         *  \param output the front-end listens for progress report
         */

-       bool static WriteProgress(unsigned short const percent, const char* const message, FILE* output);
+       bool WriteProgress(unsigned short const percent, const char* const message, FileFd &output);
+       bool WriteProgress(unsigned short const percent, const char* const message, FILE* output) APT_DEPRECATED_MSG("Use FileFd-based interface instead");

 
        /** \brief sends an error report
         *
 
        /** \brief sends an error report
         *


@@ -191,7 +197,8 @@ public:
         *  \param message is free form text to describe the error
         *  \param output the front-end listens for error messages
         */
         *  \param message is free form text to describe the error
         *  \param output the front-end listens for error messages
         */

-       bool static WriteError(char const * const uuid, std::string const &message, FILE* output);
+       bool WriteError(char const * const uuid, std::string const &message, FileFd &output);
+       bool WriteError(char const * const uuid, std::string const &message, FILE* output) APT_DEPRECATED_MSG("Use FileFd-based interface instead");

 
 
        /** \brief executes the given solver and returns the pipe ends
 
 
        /** \brief executes the given solver and returns the pipe ends


@@ -203,10 +210,10 @@ public:
         *  \param[out] solver_in will be the stdin of the solver
         *  \param[out] solver_out will be the stdout of the solver
         *
         *  \param[out] solver_in will be the stdin of the solver
         *  \param[out] solver_out will be the stdout of the solver
         *

-        *  \return true if the solver could be started and the pipes
-        *  are set up correctly, otherwise false and the pipes are invalid
+        *  \return PID of the started solver or 0 if failure occurred

         */
         */

-       bool static ExecuteSolver(const char* const solver, int *solver_in, int *solver_out);
+       pid_t ExecuteSolver(const char* const solver, int * const solver_in, int * const solver_out, bool /*overload*/);
+       APT_DEPRECATED_MSG("add a dummy bool parameter to use the overload returning a pid_t") bool ExecuteSolver(const char* const solver, int *solver_in, int *solver_out);

 
        /** \brief call an external resolver to handle the request
         *
 
        /** \brief call an external resolver to handle the request
         *


@@ -214,17 +221,18 @@ public:
         *
         *  \param solver to execute
         *  \param Cache with the problem and as universe to work in
         *
         *  \param solver to execute
         *  \param Cache with the problem and as universe to work in

-        *  \param upgrade is true if it is a request like apt-get upgrade
-        *  \param distUpgrade is true if it is a request like apt-get dist-upgrade
-        *  \param autoRemove is true if unneeded packages should be removed
+        *  \param flags effecting the request documented in #EDSP::Request::Flags

         *  \param Progress is an instance to report progress to
         *
         *  \return true if the solver has successfully solved the problem,
         *  otherwise false
         */
         *  \param Progress is an instance to report progress to
         *
         *  \return true if the solver has successfully solved the problem,
         *  otherwise false
         */

-       bool static ResolveExternal(const char* const solver, pkgDepCache &Cache,
+       bool ResolveExternal(const char* const solver, pkgDepCache &Cache,
+                                   unsigned int const flags = 0,
+                                   OpProgress *Progress = NULL);
+       APT_DEPRECATED_MSG("use the flag-based version instead") bool ResolveExternal(const char* const solver, pkgDepCache &Cache,

                                    bool const upgrade, bool const distUpgrade,
                                    bool const autoRemove, OpProgress *Progress = NULL);
                                    bool const upgrade, bool const distUpgrade,
                                    bool const autoRemove, OpProgress *Progress = NULL);

-};
+}

                                                                        /*}}}*/
 #endif
                                                                        /*}}}*/
 #endif