Added overunder.py

src/overunder.py

@@ -0,0 +1,90 @@
+import linecache
+import textwrap
+import sys
+from sys import exit
+
+class LeavingProgram(Exception):
+    pass
+
+def parse(program):
+    cmds = program.split(',')
+    splitted_cmds = []
+    for cmd in cmds:
+        splitted = cmd.split()
+        splitted_cmds.append(splitted)
+    return splitted_cmds
+
+    #return tokenize(program)
+def tokenize(s):
+    return s.split()
+
+def repl():
+    while True:
+        try:
+            val = eval(parse(input('> ')))
+            if val is not None:
+                print(val)
+        except LeavingProgram:
+            break
+
+text = None
+line_number = 0
+last_index = 0
+
+
+def eval(cmds):
+    global text
+    global line_number
+    global last_index
+
+    for cmd in cmds:
+        if cmd == []:
+            line_number += 1
+            last_index = 0
+
+        elif cmd[0] == 'load':
+            contents = open('output.txt').read()
+            text = textwrap.wrap(contents, 40, break_long_words=True)
+            print('\n'.join(text))
+            line_number = 0
+            last_index = 0
+
+        elif cmd[0] == 'show':
+            print(text[line_number])
+
+        elif cmd[0] == 'under':
+            current_line = text[line_number]
+            char_number = int(cmd[1]) - 1
+            char_list = list(current_line)
+
+            x=range(last_index, char_number + last_index + 1)
+            for time in x:
+                if time < len(char_list):
+                    char_list[time] = u'\u21e2'
+
+            last_index += char_number + 1
+
+            joined = ''.join(char_list)
+            text[line_number] = joined
+
+        elif cmd[0] == 'over':
+            last_index += int(cmd[1])
+
+        elif cmd[0] == 'pattern':
+
+            pattern = text[0:line_number + 1]
+            print('\n'.join(pattern))
+
+
+        elif cmd[0] == 'quit':
+            print('Come back soon!')
+            raise LeavingProgram()
+        else:
+            joined = ' '.join(cmd)
+            print('Did not understand command {}'.format(joined))
+
+
+
+
+if __name__ == '__main__':
+    repl()