verify-bashisms: support warnings with more than one line of source code

All warnings start with "possible bashism in", followed by one or more
(in the case of line continuation) lines of source code. To support
more than one line, we now split by matching against the known intro
text.

Example:

 $ verify-bashisms guile
 ...
 /.../openembedded-core/meta/recipes-devtools/guile/guile_2.0.13.bb
  possible bashism in guile_cross_config line 94 ($'...' should be "$(printf '...')"):
         	echo '#!'`which ${BUILD_SYS}-guile`$' \\\n--no-auto-compile -e main -s\n!#\n(define %guile-build-info '\'\( \
 			> ${B}/guile-config.cross

(From OE-Core rev: e2dd3621c45e854b4eb054b4d4537487462cdd39)

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Patrick Ohly 2017-01-31 13:50:33 +01:00 committed by Richard Purdie
parent a15895dac1
commit d99b29838d
1 changed files with 14 additions and 5 deletions

View File

@ -23,6 +23,7 @@ def is_whitelisted(s):
return False
SCRIPT_LINENO_RE = re.compile(r' line (\d+) ')
BASHISM_WARNING = re.compile(r'^(possible bashism in.*)$', re.MULTILINE)
def process(filename, function, lineno, script):
import tempfile
@ -42,11 +43,18 @@ def process(filename, function, lineno, script):
# TODO check exit code is 1
# Replace the temporary filename with the function and split it
output = e.output.replace(fn.name, function).splitlines()
if len(output) % 2 != 0:
print("Unexpected output from checkbashism: %s" % str(output))
return
output = e.output.replace(fn.name, function)
if not output or not output.startswith('possible bashism'):
# Probably starts with or contains only warnings. Dump verbatim
# with one space indention. Can't do the splitting and whitelist
# checking below.
return '\n'.join([filename,
' Unexpected output from checkbashisms.pl'] +
[' ' + x for x in output.splitlines()])
# We know that the first line matches and that therefore the first
# list entry will be empty - skip it.
output = BASHISM_WARNING.split(output)[1:]
# Turn the output into a single string like this:
# /.../foobar.bb
# possible bashism in updatercd_postrm line 2 (type):
@ -60,7 +68,8 @@ def process(filename, function, lineno, script):
if lineno is not None:
message = SCRIPT_LINENO_RE.sub(lambda m: ' line %d ' % (int(m.group(1)) + int(lineno) - 1),
message)
result.extend([' ' + message, ' ' + source])
result.append(' ' + message.strip())
result.extend([' %s' % x for x in source.splitlines()])
if result:
result.insert(0, filename)
return '\n'.join(result)