Reporting which file has not been found in a proper way. closes #755

Author: Victor R. Escobar

transcrypt/__main__.py

@@ -90,8 +90,8 @@ def setExitCode (anExitCode):
 
         utils.log (True, '\n{} (TM) Python to JavaScript Small Sane Subset Transpiler Version {}\n', __envir__.transpiler_name.capitalize (), __envir__.transpiler_version)
         utils.log (True, 'Copyright (C) Geatec Engineering. License: Apache 2.0\n\n')
-        
         utils.log (True, '\n')
+
         licensePath = '{}/{}'.format (transpilerDir, 'license_reference.txt')   
         if not os.path.isfile (licensePath):
             utils.log (True, 'Error: missing license reference file\n')
@@ -109,8 +109,9 @@ def setExitCode (anExitCode):
         if utils.commandArgs.star:
             webbrowser.open ('https://github.com/qquick/Transcrypt')
 
-        if not utils.commandArgs.source:
-            return setExitCode (exitSourceNotGiven) # Should never be here, dealth with by command arg checks already
+        if not os.path.isfile(utils.commandArgs.source):
+            utils.log (True, 'File not found: {}'.format(utils.commandArgs.source))
+            return setExitCode (exitSourceNotGiven) # apparently not properly dealt by argParse
 
         if utils.commandArgs.source.endswith ('.py') or utils.commandArgs.source.endswith ('.js'):
             utils.commandArgs.source = utils.commandArgs.source [:-3]   # Ignore extension

transcrypt/modules/org/transcrypt/utils.py

@@ -209,7 +209,12 @@ def __str__ (self):
 
         # After that, report the module and line that caused the error
 #        result += '\n\tFile \'{}\', line {}, namely:'.format (str (program.importStack [-1][0] .sourcePath), self.lineNr)
-        result += '\n\tFile \'{}\', line {}, namely:'.format (str (program.importStack [-1][0] .name), self.lineNr)
+        try:
+            name = str(program.importStack [-1][0] .name)
+        except:
+            # most probably the does not exist or for whatever reason the stack is empty
+            name = "<unknown>"
+        result += '\n\tFile \'{}\', line {}, namely:'.format(name, self.lineNr)
 
         # And, lastly, report the error message
         result += '\n\t{}'.format (self.message)