Add contrib/tests-normalize-line-number.sh

2017-04-15  Tom de Vries  <tom@codesourcery.com>

	* tests-normalize-line-number.sh: New file.

---
 contrib/tests-normalize-line-number.sh | 78 ++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)

diff --git a/contrib/tests-normalize-line-number.sh b/contrib/tests-normalize-line-number.sh
new file mode 100755
index 0000000..9ecba6a
--- /dev/null
+++ b/contrib/tests-normalize-line-number.sh
@@ -0,0 +1,78 @@
+#!/usr/bin/env python2
+
+# We hit a bug with python 3 when doing replace_in_file_p() with
+# ./libstdc++-v3/testsuite/27_io/basic_filebuf/cons/wchar_t/10132-1.cc, so let's
+# use python 2 and import the print function from python 3.
+from __future__ import print_function
+
+import os, re
+import fileinput
+
+# A non-negative number.
+number="[0-9][0-9]*"
+# Allow quotes around the number.
+number=(
+    "(?:" +
+    number + "|" +
+    '"' + number + '"' + "|" +
+    "'" + number + "'" +
+    ")"
+)
+# Directives using a line number.
+directive="dg-(?:error|warning|message|bogus)"
+# Line containing directive.
+directiveline=(
+    "(.*\{\s*%s.*)" % directive + # Part before line number.  Save it.
+    "\{\s*(%s)\s*\}" % number +   # A number in braces.  Save the number.
+    "\s*\}" +                     # Closing brace of directive.
+    "(.*)"                        # Rest of line.  Save it.
+)
+# Match the entire line
+directiveline=(
+    "^" +
+    directiveline +
+    "$"
+)
+pattern=re.compile(directiveline)
+
+extensions="c|cc|C|cpp|f|F|[fF]03|[fF]08|[fF]90|[fF]95|go|h|i|m|mm|S|adb|ads"
+extensionspattern=re.compile(".*\.(?:" + extensions + ")$")
+
+def do_replace_in_file(file):
+    for line in fileinput.input(files=file,inplace=True):
+        match=pattern.search(line)
+        if match:
+            line=(
+                match.group(1) + # Part before line number.
+                match.group(2) + # Line number.
+                " }" +           # Closing brace of directive.
+                match.group(3)   # Rest of line.
+            )
+            line+="\n"
+
+        print(line, end='')
+
+def replace_in_file_p(file):
+    filehandle = open(file, 'r')
+    for line in filehandle:
+        match=pattern.search(line)
+        if match:
+            return True
+
+    return False
+
+def do_testsuite_dir(testsuite_dir):
+    for root, dirs, files in os.walk(testsuite_dir):
+        for file in files:
+            if extensionspattern.match(file):
+                fullname=os.path.join(root, file)
+                if replace_in_file_p(fullname):
+                    do_replace_in_file(fullname)
+
+def do_dir(rootdir):
+    for root, dirs, files in os.walk(rootdir):
+        for dir in dirs:
+            if dir == "testsuite":
+                do_testsuite_dir(os.path.join(root, dir))
+
+do_dir(".")