From: Michael Schroeder <mls@suse.de>
Date: Wed, 4 Mar 2015 12:23:50 +0000 (+0100)
Subject: add solver_alternative2str
X-Git-Tag: 0.6.9~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a88f9fc4297c707801d6488898daa0420ee234aa;p=thirdparty%2Flibsolv.git

add solver_alternative2str
---

diff --git a/src/libsolv.ver b/src/libsolv.ver
index c8601714..c795b7ac 100644
--- a/src/libsolv.ver
+++ b/src/libsolv.ver
@@ -314,6 +314,7 @@ SOLV_1.0 {
 		solvable_trivial_installable_repo;
 		solvable_unset;
 		solver_allruleinfos;
+		solver_alternative2str;
 		solver_alternatives_count;
 		solver_calc_duchanges;
 		solver_calc_installsizechange;
diff --git a/src/solver.c b/src/solver.c
index 842bf167..d3260e43 100644
--- a/src/solver.c
+++ b/src/solver.c
@@ -5072,3 +5072,37 @@ pool_job2str(Pool *pool, Id how, Id what, Id flagmask)
   return pool_tmpappend(pool, s, "]", 0);
 }
 
+const char *
+solver_alternative2str(Solver *solv, int type, Id id, Id from)
+{
+  Pool *pool = solv->pool;
+  if (type == SOLVER_ALTERNATIVE_TYPE_RECOMMENDS)
+    {
+      const char *s = pool_dep2str(pool, id);
+      return pool_tmpappend(pool, s, ", recommended by ", pool_solvid2str(pool, from));
+    }
+  if (type == SOLVER_ALTERNATIVE_TYPE_RULE)
+    {
+      int rtype;
+      Id depfrom, depto, dep;
+      char buf[64];
+      if (solver_ruleclass(solv, id) == SOLVER_RULE_CHOICE)
+	id = solver_rule2pkgrule(solv, id);
+      rtype = solver_ruleinfo(solv, id, &depfrom, &depto, &dep);
+      if ((rtype & SOLVER_RULE_TYPEMASK) == SOLVER_RULE_JOB)
+	{
+	  if ((depto & SOLVER_SELECTMASK) == SOLVER_SOLVABLE_PROVIDES)
+	    return pool_dep2str(pool, dep);
+	  return solver_select2str(pool, depto & SOLVER_SELECTMASK, dep);
+	}
+      if (rtype == SOLVER_RULE_PKG_REQUIRES)
+	{
+	  const char *s = pool_dep2str(pool, dep);
+	  return pool_tmpappend(pool, s, ", required by ", pool_solvid2str(pool, depfrom));
+	}
+      sprintf(buf, "Rule #%d", id);
+      return pool_tmpjoin(pool, buf, 0, 0);
+    }
+  return "unknown alternative type";
+}
+
diff --git a/src/solver.h b/src/solver.h
index 9904bd9c..1cb9f15d 100644
--- a/src/solver.h
+++ b/src/solver.h
@@ -340,6 +340,8 @@ extern int  pool_isemptyupdatejob(Pool *pool, Id how, Id what);
 
 extern const char *solver_select2str(Pool *pool, Id select, Id what);
 extern const char *pool_job2str(Pool *pool, Id how, Id what, Id flagmask);
+extern const char *solver_alternative2str(Solver *solv, int type, Id id, Id from);
+
 
 /* iterate over all literals of a rule */
 #define FOR_RULELITERALS(l, pp, r)				\