Fix ImportError for Python 3

Refs #5

build/lib/prescons/__main__.py

@@ -0,0 +1,3 @@
+from .prescons import main
+
+main()

build/lib/prescons/prescons.py

@@ -0,0 +1,140 @@
+from code import InteractiveConsole
+
+try:
+    # python2
+    from StringIO import StringIO
+except ImportError:
+    # python3
+    from io import StringIO
+
+import os.path, sys
+
+try:
+    # python2
+    input = raw_input
+except NameError:
+    # python3
+    pass
+
+# get character from stdin
+# based on http://code.activestate.com/recipes/134892/
+try:
+    # *nix
+    import termios, tty
+    def getch():
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        gotch = None
+        try:
+            tty.setraw(fd)
+            gotch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return gotch
+except ImportError:
+    # Windows
+    import msvcrt
+    def getch():
+        return msvcrt.getch()
+
+try:
+    import readline
+except ImportError:
+    pass
+
+# lines in input file with this prefix will be executed but not displayed
+hide_line_prefix = '#! '
+
+class PresentationConsole(InteractiveConsole):
+    def __init__(self, path):
+        full_path = os.path.join(os.getcwd(), path)
+        sys.path.append(os.path.dirname(full_path))
+        self.file = open(path)
+        self.skip_wait = False
+        InteractiveConsole.__init__(self)
+
+    def switch_mode(self):
+        transitions = {
+            RealInteractiveConsole: PseudoInteractiveConsole,
+            PseudoInteractiveConsole: RealInteractiveConsole
+        }
+
+        print('')
+        print('switching mode!')
+        self.__class__ = transitions[self.__class__]
+
+    def raw_input(self, prompt=''):
+        try:
+            return self.get_raw_input(prompt)
+        except KeyboardInterrupt:
+            self.switch_mode()
+            return ''
+
+class PseudoInteractiveConsole(PresentationConsole):
+    def get_raw_input(self, prompt):
+        line = self.get_next_line(prompt)
+        if line.startswith(hide_line_prefix):
+            line = line.replace(hide_line_prefix, '', 1).rstrip()
+            self.skip_wait = True
+        else:
+            self.write(line)
+            line = line.rstrip()
+            self.skip_wait = False
+        try:
+            readline.add_history(line)
+        except NameError:
+            pass
+        return line
+
+    def get_next_line(self, prompt):
+        self.write(prompt)
+        sys.stderr.flush()
+        if prompt == sys.ps1:
+            self.wait_for_user_input()
+        line = self.file.readline()
+        if len(line) == 0:
+            self.file.close()
+            raise EOFError
+        return line
+
+    def runcode(self, code):
+        sys.stdout, sys.stderr = StringIO(), StringIO()
+        InteractiveConsole.runcode(self, code)
+        output, errors = sys.stdout.getvalue(), sys.stderr.getvalue()
+        sys.stdout, sys.stderr = sys.__stdout__, sys.__stderr__
+        if output or errors:
+            self.wait_for_user_input()
+        if output:
+            self.write(output)
+        if errors:
+            self.write(errors)
+
+    def wait_for_user_input(self):
+        if self.skip_wait:
+            return
+        while True:
+            gotch = getch()
+            if gotch == ' ':
+                break
+            elif ord(gotch) == 3:
+                # Ctrl-C
+                raise KeyboardInterrupt
+            elif ord(gotch) in (4, 26):
+                # Ctrl-D or Ctrl-Z
+                print('')
+                raise SystemExit
+
+class RealInteractiveConsole(PresentationConsole):
+    def get_raw_input(self, prompt):
+        return input(prompt)
+
+def main():
+    if len(sys.argv) != 2:
+        print('Usage: python {} <filename>'.format(sys.argv[0]))
+    else:
+        path = sys.argv[1]
+        console = PseudoInteractiveConsole(path)
+        console.interact()
+
+if __name__ == '__main__':
+    main()

build/lib/prescons/utils.py

@@ -0,0 +1,8 @@
+import platform
+import subprocess
+
+def clear_screen():
+    if platform.system() == 'Windows':
+        subprocess.call('cls')
+    else:
+        subprocess.call('clear')

prescons/__main__.py

@@ -1,3 +1,3 @@
-from prescons import main
+from .prescons import main
 
 main()

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name='prescons',
-    version='0.2',
+    version='0.2.1',
     description='Presentation Console',
     long_description=open('README').read(),
     packages=['prescons'],