Make the script support multiple input files

src/objective-c/change-comments.py

@@ -4,97 +4,99 @@ import re
 import sys
 
 
-if len(sys.argv) != 2:
-  print("Please provide a source file name as only argument.")
+if len(sys.argv) < 2:
+  print("Please provide at least one source file name as argument.")
   quit()
 
-print("Modifying format of {file} comments in place...".format(
-    file = sys.argv[1],
-))
+for file_name in sys.argv[1:]:
 
+  print("Modifying format of {file} comments in place...".format(
+      file = file_name,
+  ))
 
-# Input
 
-lines = []
+  # Input
 
-with open(sys.argv[1], "r") as input_file:
-  lines = input_file.readlines()
+  lines = []
 
-def peek():
-  return lines[0]
+  with open(file_name, "r") as input_file:
+    lines = input_file.readlines()
 
-def read_line():
-  return lines.pop(0)
+  def peek():
+    return lines[0]
 
-def more_input_available():
-  return lines
+  def read_line():
+    return lines.pop(0)
 
+  def more_input_available():
+    return lines
 
-# Output
 
-output_lines = []
+  # Output
 
-def write(line):
-  output_lines.append(line)
+  output_lines = []
 
-def flush_output():
-  with open(sys.argv[1], "w") as otuput_file:
-    for line in output_lines:
-      otuput_file.write(line)
+  def write(line):
+    output_lines.append(line)
 
+  def flush_output():
+    with open(file_name, "w") as otuput_file:
+      for line in output_lines:
+        otuput_file.write(line)
 
-# Pattern matching
 
-comment_regex = r'^(\s*)//\s(.*)$'
+  # Pattern matching
 
-def is_comment(line):
-  return re.search(comment_regex, line)
+  comment_regex = r'^(\s*)//\s(.*)$'
 
-def isnt_comment(line):
-  return not is_comment(line)
+  def is_comment(line):
+    return re.search(comment_regex, line)
 
-def next_line(predicate):
-  if not more_input_available():
-    return False
-  return predicate(peek())
+  def isnt_comment(line):
+    return not is_comment(line)
 
+  def next_line(predicate):
+    if not more_input_available():
+      return False
+    return predicate(peek())
 
-# Transformation
 
-def indentation_of(line):
-  match = re.search(comment_regex, line)
-  return match.group(1)
+  # Transformation
 
-def content(line):
-  match = re.search(comment_regex, line)
-  return match.group(2)
+  def indentation_of(line):
+    match = re.search(comment_regex, line)
+    return match.group(1)
 
-def format_as_block(comment_block):
-  if len(comment_block) == 0:
-    return []
+  def content(line):
+    match = re.search(comment_regex, line)
+    return match.group(2)
 
-  indent = indentation_of(comment_block[0])
+  def format_as_block(comment_block):
+    if len(comment_block) == 0:
+      return []
 
-  if len(comment_block) == 1:
-    return [indent + "/** " + content(comment_block[0]) + " */\n"]
+    indent = indentation_of(comment_block[0])
 
-  block = ["/**"] + [" * " + content(line) for line in comment_block] + [" */"]
-  return [indent + line + "\n" for line in block]
+    if len(comment_block) == 1:
+      return [indent + "/** " + content(comment_block[0]) + " */\n"]
 
+    block = ["/**"] + [" * " + content(line) for line in comment_block] + [" */"]
+    return [indent + line.rstrip() + "\n" for line in block]
 
-# Main algorithm
 
-while more_input_available():
-  while next_line(isnt_comment):
-    write(read_line())
+  # Main algorithm
 
-  comment_block = []
-  # Get all lines in the same comment block. We could restrict the indentation
-  # to be the same as the first line of the block, but it's probably ok.
-  while (next_line(is_comment)):
-    comment_block.append(read_line())
+  while more_input_available():
+    while next_line(isnt_comment):
+      write(read_line())
 
-  for line in format_as_block(comment_block):
-    write(line)
+    comment_block = []
+    # Get all lines in the same comment block. We could restrict the indentation
+    # to be the same as the first line of the block, but it's probably ok.
+    while (next_line(is_comment)):
+      comment_block.append(read_line())
 
-flush_output()
+    for line in format_as_block(comment_block):
+      write(line)
+
+  flush_output()

src/objective-c/format-all-comments.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+
+find . -type f -name "*.h" ! -path "*/Pods/*" ! -path "./generated_libraries/*" ! -path "./examples/*" ! -path "./tests/*" | xargs ./change-comments.py