Use output filename as a defult stage file name. Close #351

dvc/cli.py

@@ -117,7 +117,6 @@ def parse_args(argv=None):
                         help='Lock data item - disable reproduction.')
     run_parser.add_argument('-f',
                         '--file',
-                        default=StateFile.DVCFILE_NAME,
                         help='Specify name of the state file')
     run_parser.add_argument('-c',
                         '--cwd',

dvc/command/run.py

@@ -1,7 +1,6 @@
 import os
 
 from dvc.command.common.base import CmdBase
-from dvc.data_cloud import file_md5
 from dvc.exceptions import DvcException
 from dvc.logger import Logger
 from dvc.state_file import StateFile
@@ -20,20 +19,35 @@ class CmdRun(CmdBase):
     def run(self):
         cmd = ' '.join(self.parsed_args.command)
 
-        if os.path.isfile(self.parsed_args.file):
-            Logger.error("Stage file {} already exists".format(self.parsed_args.file))
+        stage_file = self.get_stage_file()
+        if os.path.isfile(stage_file):
+            Logger.error("Stage file {} already exists".format(stage_file))
             return 1
 
-        state = StateFile(fname=os.path.join(self.parsed_args.cwd, self.parsed_args.file),
+        state = StateFile(fname=os.path.join(self.parsed_args.cwd, stage_file),
                           cmd=cmd,
                           out=self.parsed_args.out,
                           out_git=self.parsed_args.out_git,
                           deps=self.parsed_args.deps,
-                          locked=self.parsed_args.lock)
+                          locked=self.parsed_args.lock,
+                          cwd=self.parsed_args.cwd)
 
         self.run_command(self.settings, state)
         return self.commit_if_needed('DVC run: {}'.format(state.cmd))
 
+    def get_stage_file(self):
+        if self.parsed_args.file:
+            return self.parsed_args.file
+
+        if self.parsed_args.out or self.parsed_args.out_git:
+            result = self.parsed_args.out[0] if self.parsed_args.out else self.parsed_args.out_git[0]
+            result += StateFile.STATE_FILE_SUFFIX
+            Logger.info(u'Using \'{}\' as a stage file'.format(result))
+            return result
+
+        Logger.info(u'Using \'{}\' as stage file'.format(StateFile.DVCFILE_NAME))
+        return StateFile.DVCFILE_NAME
+
     @staticmethod
     def run_command(settings, state):
         Executor.exec_cmd_only_success(state.cmd, cwd=state.cwd, shell=True)

dvc/state_file.py

@@ -40,7 +40,8 @@ class StateFile(StateFileBase):
                  out=None,
                  out_git=None,
                  deps=None,
-                 locked=None):
+                 locked=None,
+                 cwd=None):
         super(StateFile, self).__init__()
 
         self.cmd = cmd
@@ -50,7 +51,7 @@ class StateFile(StateFileBase):
         self.locked = locked
 
         self.path = os.path.abspath(fname) if fname else None
-        self.cwd = os.path.dirname(self.path) if self.path else None
+        self.cwd = cwd
 
     @staticmethod
     def parse_deps_state(settings, deps, currdir=None):