Output shorter lines for TLD pattern

The output had line breaks at every alpha character and this caused
lines that were too long to be in the code. This CL,  tries to produce
shorter lines by adding a new line if the current line is longer than
a hundred characters.

Change-Id: I87e8a1782ddc4f9369c0fd6018c499a2c0f75936

1 files changed, 27 insertions, 4 deletions

diff --git a/common/tools/make-iana-tld-pattern.py b/common/tools/make-iana-tld-pattern.py
index d7cca93..9847b95 100755
--- a/common/tools/make-iana-tld-pattern.py
+++ b/common/tools/make-iana-tld-pattern.py
@@ -25,6 +25,29 @@ URL_PREFIX = r"""
 """
 
 URL_SUFFIX = ';'
+TAB = '        '
+
+class BucketOutput:
+    def __init__(self):
+        self.buffer = TAB
+        self.lineLength = len(TAB)
+
+    def __iadd__(self, other):
+        self.buffer += other
+        self.lineLength += len(other)
+        return self
+
+    def addPipe(self):
+        if self.lineLength > 90:
+            self.buffer += '"\n'
+            self.buffer += TAB
+            self.buffer += '+ "'
+            self.lineLength = len(TAB)
+
+        self += '|'
+
+    def value(self):
+        return self.buffer
 
 class Bucket:
     def __init__(self, baseLetter):
@@ -39,7 +62,7 @@ class Bucket:
         self.words.sort()
         self.letters.sort()
 
-        output = '        ';
+        output = BucketOutput()
 
         if isFirst:
             if isWebUrl:
@@ -58,7 +81,7 @@ class Bucket:
         firstWord = 1
         for word in self.words:
             if firstWord == 0:
-                output += '|'
+                output.addPipe()
             firstWord = 0
             for letter in word:
                 if letter == '-':
@@ -66,7 +89,7 @@ class Bucket:
                 output += letter
 
         if len(self.words) > 0 and len(self.letters) > 0:
-            output += '|'
+            output.addPipe()
 
         if len(self.letters) == 1:
             output += '%c%c' % (self.base, self.letters[0])
@@ -85,7 +108,7 @@ class Bucket:
             output += '"'
             output += '\n'
 
-        return output;
+        return output.value();
 
     def add(self, line):
         length = len(line)