[PATCH] D36624: [opt-viewer] Decode HTML bytes for Python 3

[Brian Gesiak via Phabricator via llvm-commits]

modocache created this revision.

When using Python 3, `pygments.highlight()` returns a `bytes` object, not
a `str`, causing the call to `str.replace` on the following line to fail
with a runtime exception:
`TypeError: 'str' does not support the buffer interface`. Decode the
bytes into a string in order to fix the exception.

Test Plan:
Run `opt-viewer.py` with Python 3.4, and confirm no runtime error occurs
when calling `str.replace`.


https://reviews.llvm.org/D36624

Files:
  tools/opt-viewer/opt-viewer.py


Index: tools/opt-viewer/opt-viewer.py
===================================================================
--- tools/opt-viewer/opt-viewer.py
+++ tools/opt-viewer/opt-viewer.py
@@ -59,7 +59,10 @@
 
     def render_source_lines(self, stream, line_remarks):
         file_text = stream.read()
-        html_highlighted = highlight(file_text, self.cpp_lexer, self.html_formatter)
+        html_highlighted = highlight(
+            file_text,
+            self.cpp_lexer,
+            self.html_formatter).decode('utf-8')
 
         # Take off the header and footer, these must be
         #   reapplied line-wise, within the page structure


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