From cb95ea298f10add8e27404e7cc25db0a60782c07 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Sat, 19 Jul 2008 00:37:17 +0000
Subject: Add a MergeListItem.statusMessage(msg) callback for displaying
 messages like "Building this" or "Installing that". This delegates the
 resposibility of generating \r and \n control characters, to guarantee that
 lines are created or erased when necessary and appropriate. TODO: Make
 JobStatusDisplay display the output.

svn path=/main/trunk/; revision=11127
---
 pym/_emerge/__init__.py | 46 +++++++++++++++++++++++++---------------------
 1 file changed, 25 insertions(+), 21 deletions(-)

diff --git a/pym/_emerge/__init__.py b/pym/_emerge/__init__.py
index 491bee176..bfc5767e9 100644
--- a/pym/_emerge/__init__.py
+++ b/pym/_emerge/__init__.py
@@ -3328,7 +3328,7 @@ class MergeListItem(CompositeTask):
 		"binpkg_opts", "build_opts", "emerge_opts",
 		"failed_fetches", "find_blockers", "logger", "mtimedb", "pkg",
 		"pkg_count", "pkg_to_replace", "prefetcher",
-		"settings", "world_atom") + \
+		"settings", "statusMessage", "world_atom") + \
 		("_install_task",)
 
 	def _start(self):
@@ -3358,16 +3358,13 @@ class MergeListItem(CompositeTask):
 			action_desc = "Extracting"
 
 		if not build_opts.pretend:
-			extra_newline = "\n"
-			if self.background:
-				extra_newline = ""
-			portage.writemsg_stdout(
-				"%s>>> %s (%s of %s) %s %s %s\n" % \
-				(extra_newline, action_desc,
+
+			self.statusMessage("%s (%s of %s) %s %s %s" % \
+				(action_desc,
 				colorize("MERGE_LIST_PROGRESS", str(pkg_count.curval)),
 				colorize("MERGE_LIST_PROGRESS", str(pkg_count.maxval)),
-				colorize("GOOD", pkg.cpv), preposition, pkg.root),
-				noiselevel=-1)
+				colorize("GOOD", pkg.cpv), preposition, pkg.root))
+
 			logger.log(" >>> emerge (%s of %s) %s to %s" % \
 				(pkg_count.curval, pkg_count.maxval, pkg.cpv, pkg.root))
 
@@ -3462,24 +3459,15 @@ class PackageMerge(AsynchronousTask):
 		pkg_count = self.merge.pkg_count
 
 		if pkg.installed:
-
 			action_desc = "Uninstalling"
 			preposition = "from"
-
-			portage.writemsg_stdout(
-				">>> %s %s %s %s\n" % \
-				(action_desc, colorize("GOOD", pkg.cpv),
-				preposition, pkg.root), noiselevel=-1)
-
 		else:
-
 			action_desc = "Installing"
 			preposition = "to"
 
-			portage.writemsg_stdout(
-				">>> %s %s %s %s\n" % \
-				(action_desc, colorize("GOOD", pkg.cpv),
-				preposition, pkg.root), noiselevel=-1)
+		self.merge.statusMessage("%s %s %s %s" % \
+			(action_desc, colorize("GOOD", pkg.cpv),
+			preposition, pkg.root))
 
 		self.returncode = self.merge.merge()
 		self.wait()
@@ -9369,10 +9357,26 @@ class Scheduler(PollScheduler):
 			prefetcher=self._prefetchers.get(pkg),
 			scheduler=self._sched_iface,
 			settings=self._allocate_config(pkg.root),
+			statusMessage=self._status_msg,
 			world_atom=self._world_atom)
 
 		return task
 
+	def _status_msg(self, msg):
+		"""
+		Display a brief status message (no newlines) in the status display.
+		This is called by tasks to provide feedback to the user. This
+		delegates the resposibility of generating \r and \n control characters,
+		to guarantee that lines are created or erased when necessary and
+		appropriate.
+
+		@type msg: str
+		@param msg: a brief status message (no newlines allowed)
+		"""
+
+		# TODO: Let self._status_display handle this.
+		portage.util.writemsg_level(">>> %s\n" % msg, noiselevel=-1)
+
 	def _save_resume_list(self):
 		"""
 		Do this before verifying the ebuild Manifests since it might
-- 
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