1 files changed, 24 insertions, 15 deletions
diff --git a/tools/TimeFileMaker.py b/tools/TimeFileMaker.py
index 854dd25b75..3d07661d56 100644
--- a/tools/TimeFileMaker.py
+++ b/tools/TimeFileMaker.py
@@ -34,6 +34,24 @@ def reformat_time_string(time):
     minutes, seconds = divmod(seconds, 60)
     return '%dm%02d.%ss' % (minutes, seconds, milliseconds)
 
+def get_file_lines(file_name):
+    if file_name == '-':
+        if hasattr(sys.stdin, 'buffer'):
+            lines = sys.stdin.buffer.readlines()
+        else:
+            lines = sys.stdin.readlines()
+    else:
+        with open(file_name, 'rb') as f:
+            lines = f.readlines()
+    for line in lines:
+        try:
+            yield line.decode('utf-8')
+        except UnicodeDecodeError: # invalid utf-8
+            pass
+
+def get_file(file_name):
+    return ''.join(get_file_lines(file_name))
+
 def get_times(file_name):
     '''
     Reads the contents of file_name, which should be the output of
@@ -41,11 +59,7 @@ def get_times(file_name):
     names to compile durations, as strings.  Removes common prefixes
     using STRIP_REG and STRIP_REP.
     '''
-    if file_name == '-':
-        lines = sys.stdin.read()
-    else:
-        with open(file_name, 'r', encoding="utf-8") as f:
-            lines = f.read()
+    lines = get_file(file_name)
     reg = re.compile(r'^([^\s]+) \([^\)]*?user: ([0-9\.]+)[^\)]*?\)\s*$', re.MULTILINE)
     times = reg.findall(lines)
     if all(time in ('0.00', '0.01') for name, time in times):
@@ -61,11 +75,7 @@ def get_single_file_times(file_name):
     'coqc -time', and parses it to construct a dict mapping lines to
     to compile durations, as strings.
     '''
-    if file_name == '-':
-        lines = sys.stdin.read()
-    else:
-        with open(file_name, 'r', encoding="utf-8") as f:
-            lines = f.read()
+    lines = get_file(file_name)
     reg = re.compile(r'^Chars ([0-9]+) - ([0-9]+) ([^ ]+) ([0-9\.]+) secs (.*)$', re.MULTILINE)
     times = reg.findall(lines)
     if len(times) == 0: return dict()
@@ -209,11 +219,10 @@ def make_table_string(times_dict,
 
 def print_or_write_table(table, files):
     if len(files) == 0 or '-' in files:
-        try:
-            binary_stdout = sys.stdout.buffer
-        except AttributeError:
-            binary_stdout = sys.stdout
-        print(table.encode("utf-8"), file=binary_stdout)
+        if hasattr(sys.stdout, 'buffer'):
+            sys.stdout.buffer.write(table.encode("utf-8"))
+        else:
+            sys.stdout.write(table.encode("utf-8"))
     for file_name in files:
         if file_name != '-':
             with open(file_name, 'w', encoding="utf-8") as f: