Provide variations on git log and git rev-list

Prepare for patch-set that will squash multiple commits.

Change-Id: I14bc8b5d524aaf5b2bce6be800c36035b4e48c82

4 files changed, 40 insertions, 9 deletions

diff --git a/linaropy/git/gitrepo.py b/linaropy/git/gitrepo.py
index 69e47bb..5c72f83 100644
--- a/linaropy/git/gitrepo.py
+++ b/linaropy/git/gitrepo.py
@@ -167,12 +167,12 @@ class GitRepo(object):
         logging.info("Attempting to commit changes to %s" % self.repodir)
         try:
             with cd(self.repodir):
-                # Git commit first with a boiler plate message and then allow the user
-                # to amend.
+                # Git commit first with a boiler plate message and then allow
+                # the user to amend.
                 if git("status", "--porcelain"):
                     # using python sh will suppress the git editor
-                    subprocess.call(["git", "commit", "-m", message])
-                    subprocess.call(["git", "commit", "--amend"])
+                    subprocess.call(["git", "commit", "-q", "-m", message])
+                    subprocess.call(["git", "commit", "-q", "--amend"])
                 else:
                     logging.info("Nothing to commit.")
                     return False
@@ -183,12 +183,30 @@ class GitRepo(object):
         return True
 
     # TODO: Write unit tests for this.
-    def log(self, numcommits):
+    def print_log(self, numcommits,oneline=False):
         try:
             with cd(self.repodir):
-                print git("log", "-n %d" % numcommits)
+                if oneline:
+                    print git("log", "--oneline", "-n %d" % numcommits)
+                else:
+                    print git("log", "-n %d" % numcommits)
         except ErrorReturnCode:
-            raise EnvironmentError("Unable to git log -n %d", numcommits)
+            raise EnvironmentError("Unable to git log -n %d" % numcommits)
+
+    # versus is a branchname to compare against.  It will cause git rev-list to
+    # list the differing commits.
+    def rev_list(self, branch, numcommits=None, versus=None):
+        try:
+            with cd(self.repodir):
+                if versus is not None:
+                    return git("rev-list", "%s..%s" % (versus,
+                        branch)).stdout.rstrip()
+                else:
+                    return git("rev-list", branch, "--max-count=%d" %
+                         numcommits).stdout.rstrip()
+        except ErrorReturnCode as exc:
+            raise EnvironmentError("Unable to git rev-list because: %s" %
+                    (numcommits, str(exc)))
 
     # TODO: Does this need to 'cd' first?
     def edit(self, toedit):
diff --git a/linaropy/rn/rngen.py b/linaropy/rn/rngen.py
index b0d1a1a..47d63f8 100644
--- a/linaropy/rn/rngen.py
+++ b/linaropy/rn/rngen.py
@@ -38,6 +38,8 @@ from gccclone import GCCClone
 
 from ..rninput import finput
 
+# Terminal color codes.
+from linaropy.colors import *
 
 def get_gcc_version(gccclone):
     dct = {}
@@ -307,6 +309,8 @@ def rngen(rn_series, gccclone, history):
 
     rn_series.rn_series.add(bin_readme)
     rn_series.rn_series.add(src_readme)
+    print_info("Generated release notes for %s.  Please add a commit message."
+            % nextseries.label())
     rn_series.rn_series.commit(
         "Generated Release Notes for %s." % nextseries.label())
-    rn_series.rn_series.log(1)
+    rn_series.rn_series.print_log(1)
diff --git a/linaropy/rn/rnseries.py b/linaropy/rn/rnseries.py
index 87dacb8..f68c547 100644
--- a/linaropy/rn/rnseries.py
+++ b/linaropy/rn/rnseries.py
@@ -223,6 +223,8 @@ class RNSeries(object):
                     workdir=self.next_series.shorttype(),
                     track=track,
                     branchname=self.next_series.branchname())
+
+
             else:
                 print_info(
                     "Deriving your release-notes from branch %s%s%s%s"
@@ -235,9 +237,12 @@ class RNSeries(object):
                     track=remote_track,
                     branchname=self.next_series.branchname())
 
+            self.starting_commit=self.rn_series.rev_list(
+                    self.rn_series.getbranch(),1)
+
         # TODO: Detect if the user changed the template README.textile or
         # template README.textile.series and ask if they want to merge the
-        # changes into the new rn_series files.
+        # changes.
 
         if not headless:
             answer = yninput(
@@ -248,6 +253,9 @@ class RNSeries(object):
 
         # TODO: If there are multiple commits, the subsequent calls should use
         # commit --amend.  Add an 'amend' parameter to GitRepo::commit().
+        commits=self.rn_series.rev_list(self.rn_series.getbranch(),
+                versus=self.starting_commit)
+
         return self.rn_series.commit(
             "Added NEWS items for %s." % self.next_series.branchname())
 
diff --git a/rn.py b/rn.py
index 2f64b1a..819475f 100644
--- a/rn.py
+++ b/rn.py
@@ -105,6 +105,7 @@ def generate(track, to_date, to_series, gccsource, persist):
 
     next_rn.update_series_readmes()
     while ans:
+        next_rn.rn_series.print_log(1)
         # Generate the temporary output files to the projdir.
         with cd(rnProj[0].projdir):
             try: