remove use of very old file() function that is no longer available

[plcapi.git] / migrations / extract-views.py

diff --git a/migrations/extract-views.py b/migrations/extract-views.py
index 4fd5090..9424644 100755 (executable)
--- a/migrations/extract-views.py
+++ b/migrations/extract-views.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 import re
@@ -10,48 +10,49 @@ class Schema:
         self.output=output
 
     # left part is non-greedy
-    comment=re.compile("(.*?)--.*")
-    spaces=re.compile("^\s+(\S.*)")
-    view=re.compile("(?i)\s*create\s+(or\s+replace)?\s+view.*")
+    comment = re.compile("(.*?)--.*")
+    spaces = re.compile("^\s+(\S.*)")
+    view = re.compile("(?i)\s*create\s+(or\s+replace)?\s+view.*")
 
     def parse (self):
         if self.output:
             outfile = open(self.output, "a")
         else:
             outfile = sys.stdout
-        contents = file(self.input).read()
-        parts=contents.split(";")
+        with open(self.input) as feed:
+            contents = feed.read()
+        parts = contents.split(";")
         for part in parts:
             # normalize: remove comments, linebreaks, trailing spaces..
             normalized=''
             lines=part.split('\n');
-            out_lines=[]
+            out_lines = []
             for line in lines:
                 # remove comment
-                match=Schema.comment.match(line)
+                match = Schema.comment.match(line)
                 if match:
-                    line=match.group(1)
+                    line = match.group(1)
                 out_lines.append(line)
             # get them together
             out_line = " ".join(out_lines)
             # remove trailing spaces
-            match=Schema.spaces.match(out_line)
+            match = Schema.spaces.match(out_line)
             if match:
-                out_line=match.group(1)
-            match=Schema.view.match(out_line)
+                out_line = match.group(1)
+            match = Schema.view.match(out_line)
             if match:
                 outfile.write("{};\n".format(out_line))
         if outfile != sys.stdout:
             outfile.close()
 
 if __name__ == '__main__':
-    if len(sys.argv) not in [2,3]:
-        print 'Usage:',sys.argv[0],'input [output]'
+    if len(sys.argv) not in [2, 3]:
+        print('Usage:', sys.argv[0], 'input [output]')
         sys.exit(1)
-    input=sys.argv[1]
+    input = sys.argv[1]
     try:
-        output=sys.argv[2]
+        output = sys.argv[2]
     except:
-        output=None
-    Schema(input,output).parse()
+        output = None
+    Schema(input, output).parse()