Bug #275217 - Part 2 - Move changelog stuff stuff out of depgraph.

Thanks to Sebastian Mingramm (few) <s.mingramm@gmx.de> for this patch.

svn path=/main/trunk/; revision=13677

1 files changed, 62 insertions, 0 deletions

diff --git a/pym/_emerge/changelog.py b/pym/_emerge/changelog.py
new file mode 100644
index 000000000..8084ecb9f
--- /dev/null
+++ b/pym/_emerge/changelog.py
@@ -0,0 +1,62 @@
+import os
+import re
+
+try:
+	import portage
+except ImportError:
+	from os import path as osp
+	import sys
+	sys.path.insert(0, osp.join(osp.dirname(osp.dirname(osp.realpath(__file__))), "pym"))
+	import portage
+
+def calc_changelog(ebuildpath,current,next):
+	if ebuildpath == None or not os.path.exists(ebuildpath):
+		return []
+	current = '-'.join(portage.catpkgsplit(current)[1:])
+	if current.endswith('-r0'):
+		current = current[:-3]
+	next = '-'.join(portage.catpkgsplit(next)[1:])
+	if next.endswith('-r0'):
+		next = next[:-3]
+	changelogpath = os.path.join(os.path.split(ebuildpath)[0],'ChangeLog')
+	try:
+		changelog = open(changelogpath).read()
+	except SystemExit, e:
+		raise # Needed else can't exit
+	except:
+		return []
+	divisions = _find_changelog_tags(changelog)
+	#print 'XX from',current,'to',next
+	#for div,text in divisions: print 'XX',div
+	# skip entries for all revisions above the one we are about to emerge
+	for i in range(len(divisions)):
+		if divisions[i][0]==next:
+			divisions = divisions[i:]
+			break
+	# find out how many entries we are going to display
+	for i in range(len(divisions)):
+		if divisions[i][0]==current:
+			divisions = divisions[:i]
+			break
+	else:
+	    # couldnt find the current revision in the list. display nothing
+		return []
+	return divisions
+
+def _find_changelog_tags(changelog):
+	divs = []
+	release = None
+	while 1:
+		match = re.search(r'^\*\ ?([-a-zA-Z0-9_.+]*)(?:\ .*)?\n',changelog,re.M)
+		if match is None:
+			if release is not None:
+				divs.append((release,changelog))
+			return divs
+		if release is not None:
+			divs.append((release,changelog[:match.start()]))
+		changelog = changelog[match.end():]
+		release = match.group(1)
+		if release.endswith('.ebuild'):
+			release = release[:-7]
+		if release.endswith('-r0'):
+			release = release[:-3]