tool: Refactor repodir handling

* Use given repodir in config if not blank
* Ditch ~/gentoo-x86 default (it's ancient)
  and error out if it doesn't exist
* If no repodir given, guess:
	* /var/db/repos/gentoo, and then
	* /usr/portage

Now that we use nattka, we need a working repodir.
Try some sensible defaults if the given one doesn't
work.

tatt: Support file-only jobs via Nattka

Signed-off-by: Sam James <sam@gentoo.org>

3 files changed, 25 insertions, 5 deletions

diff --git a/scripts/tatt b/scripts/tatt
index 9936006..27e9b61 100755
--- a/scripts/tatt
+++ b/scripts/tatt
@@ -19,6 +19,7 @@ from tatt.scriptwriter import writecommitscript as writeCommit
 from tatt.scriptwriter import writeCleanUpScript as writeCleanup
 from tatt.tattConfig import tattConfig as tattConfig
 from tatt.job import job as job
+from tatt.tool import get_repo_dir
 
 ##### Generate a global config obj, reading from ~/.tatt #####
 config = tattConfig()
@@ -142,7 +143,6 @@ if options.infile:
         myJob.type="stable"
 
     myJob.packageList = packageFinder.findPackages(packraw, targetarch)
-
 ## -b and a bugnumber was given ?
 if options.bugnum:
     print("Bugnumber:  " + options.bugnum)
@@ -166,9 +166,9 @@ if options.bugnum:
         sys.exit(1)
     if myJob.packageList==None:
         if response["cf_stabilisation_atoms"]:
-            myJob.packageList = packageFinder.findPackages(response["cf_stabilisation_atoms"], config['arch'], config['repodir'], options.bugnum)
+            myJob.packageList = packageFinder.findPackages(response["cf_stabilisation_atoms"], config['arch'], get_repo_dir(config['repodir']), options.bugnum)
             if len(myJob.packageList) == 0 and ("KEYWORDREQ" in response["keywords"] or response["component"] == "Keywording"):
-                myJob.packageList = packageFinder.findPackages(response["cf_stabilisation_atoms"], '~' + config['arch'], config['repodir'], options.bugnum)
+                myJob.packageList = packageFinder.findPackages(response["cf_stabilisation_atoms"], '~' + config['arch'], get_repo_dir(config['repodir']), options.bugnum)
         else:
             response = session.get(config["bugzilla-url"] + "/rest/bug/{}/attachment".format(options.bugnum), params=params).json()["bugs"][str(options.bugnum)]
             for attachment in response:
@@ -176,7 +176,7 @@ if options.bugnum:
                     continue
                 for flag in attachment['flags']:
                     if flag["name"] == "stabilization-list" and flag["status"] == '+':
-                        myJob.packageList = packageFinder.findPackages(base64.b64decode(attachment["data"]).decode("utf8"), config['arch'], config['repodir'],  options.bugnum)
+                        myJob.packageList = packageFinder.findPackages(base64.b64decode(attachment["data"]).decode("utf8"), config['arch'], get_repo_dir(config['repodir']), options.bugnum)
 
 
 # joint code for -f and -b
diff --git a/tatt/dot-tatt-spec b/tatt/dot-tatt-spec
index 1d9fe9d..33aff95 100644
--- a/tatt/dot-tatt-spec
+++ b/tatt/dot-tatt-spec
@@ -7,7 +7,7 @@ defaultopts=string(default="")
 emergeopts=string(default="")
 rdeps=integer(0,512,default=10)
 usecombis=integer(0,512,default=12)
-repodir=string(default="./gentoo-x86")
+repodir=string(default="")
 tinderbox-url=string(default="https://qa-reports.gentoo.org/output/genrdeps/rindex/")
 safedir=string(default="")
 bugzilla-url=string(default="https://bugs.gentoo.org")
diff --git a/tatt/tool.py b/tatt/tool.py
index 450ed6a..1322315 100644
--- a/tatt/tool.py
+++ b/tatt/tool.py
@@ -1,3 +1,5 @@
+import os
+
 """ Helper functions used in tatt"""
 
 ## Getting unique elements of a list ##
@@ -17,3 +19,21 @@ def unique(seq, idfun=None):
             seen[marker] = 1
             result.append(item)
     return result
+
+def get_repo_dir(repodir):
+    # Prefer the repo dir in the config
+    if repodir:
+        if os.path.isdir(repodir):
+            return repodir
+        else:
+            raise ValueError("Repo dir does not seem to be a directory")
+
+    # No path given in config
+    if os.path.isdir("/var/db/repos/gentoo/"):
+        print("Using /var/db/repos/gentoo/ as fallback")
+        return "/var/db/repos/gentoo"
+    elif os.path.isdir("/usr/portage/"):
+        print("Using /usr/portage/ as fallback")
+        return "/usr/portage/"
+
+    raise ValueError("Repo dir not given and fallbacks failed")