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Diffstat (limited to 'extras/cppcheck.py')
| -rw-r--r-- | extras/cppcheck.py | 591 |
1 files changed, 591 insertions, 0 deletions
diff --git a/extras/cppcheck.py b/extras/cppcheck.py new file mode 100644 index 0000000..13ff424 --- /dev/null +++ b/extras/cppcheck.py @@ -0,0 +1,591 @@ +#! /usr/bin/env python +# -*- encoding: utf-8 -*- +# Michel Mooij, michel.mooij7@gmail.com + +""" +Tool Description +================ +This module provides a waf wrapper (i.e. waftool) around the C/C++ source code +checking tool 'cppcheck'. + +See http://cppcheck.sourceforge.net/ for more information on the cppcheck tool +itself. +Note that many linux distributions already provide a ready to install version +of cppcheck. On fedora, for instance, it can be installed using yum: + + 'sudo yum install cppcheck' + + +Usage +===== +In order to use this waftool simply add it to the 'options' and 'configure' +functions of your main waf script as shown in the example below: + + def options(opt): + opt.load('cppcheck', tooldir='./waftools') + + def configure(conf): + conf.load('cppcheck') + +Note that example shown above assumes that the cppcheck waftool is located in +the sub directory named 'waftools'. + +When configured as shown in the example above, cppcheck will automatically +perform a source code analysis on all C/C++ build tasks that have been +defined in your waf build system. + +The example shown below for a C program will be used as input for cppcheck when +building the task. + + def build(bld): + bld.program(name='foo', src='foobar.c') + +The result of the source code analysis will be stored both as xml and html +files in the build location for the task. Should any error be detected by +cppcheck the build will be aborted and a link to the html report will be shown. +By default, one index.html file is created for each task generator. A global +index.html file can be obtained by setting the following variable +in the configuration section: + + conf.env.CPPCHECK_SINGLE_HTML = False + +When needed source code checking by cppcheck can be disabled per task, per +detected error or warning for a particular task. It can be also be disabled for +all tasks. + +In order to exclude a task from source code checking add the skip option to the +task as shown below: + + def build(bld): + bld.program( + name='foo', + src='foobar.c' + cppcheck_skip=True + ) + +When needed problems detected by cppcheck may be suppressed using a file +containing a list of suppression rules. The relative or absolute path to this +file can be added to the build task as shown in the example below: + + bld.program( + name='bar', + src='foobar.c', + cppcheck_suppress='bar.suppress' + ) + +A cppcheck suppress file should contain one suppress rule per line. Each of +these rules will be passed as an '--suppress=<rule>' argument to cppcheck. + +Dependencies +================ +This waftool depends on the python pygments module, it is used for source code +syntax highlighting when creating the html reports. see http://pygments.org/ for +more information on this package. + +Remarks +================ +The generation of the html report is originally based on the cppcheck-htmlreport.py +script that comes shipped with the cppcheck tool. +""" + +import sys +import xml.etree.ElementTree as ElementTree +from waflib import Task, TaskGen, Logs, Context, Options + +PYGMENTS_EXC_MSG= ''' +The required module 'pygments' could not be found. Please install it using your +platform package manager (e.g. apt-get or yum), using 'pip' or 'easy_install', +see 'http://pygments.org/download/' for installation instructions. +''' + +try: + import pygments + from pygments import formatters, lexers +except ImportError as e: + Logs.warn(PYGMENTS_EXC_MSG) + raise e + + +def options(opt): + opt.add_option('--cppcheck-skip', dest='cppcheck_skip', + default=False, action='store_true', + help='do not check C/C++ sources (default=False)') + + opt.add_option('--cppcheck-err-resume', dest='cppcheck_err_resume', + default=False, action='store_true', + help='continue in case of errors (default=False)') + + opt.add_option('--cppcheck-bin-enable', dest='cppcheck_bin_enable', + default='warning,performance,portability,style,unusedFunction', action='store', + help="cppcheck option '--enable=' for binaries (default=warning,performance,portability,style,unusedFunction)") + + opt.add_option('--cppcheck-lib-enable', dest='cppcheck_lib_enable', + default='warning,performance,portability,style', action='store', + help="cppcheck option '--enable=' for libraries (default=warning,performance,portability,style)") + + opt.add_option('--cppcheck-std-c', dest='cppcheck_std_c', + default='c99', action='store', + help='cppcheck standard to use when checking C (default=c99)') + + opt.add_option('--cppcheck-std-cxx', dest='cppcheck_std_cxx', + default='c++03', action='store', + help='cppcheck standard to use when checking C++ (default=c++03)') + + opt.add_option('--cppcheck-check-config', dest='cppcheck_check_config', + default=False, action='store_true', + help='forced check for missing buildin include files, e.g. stdio.h (default=False)') + + opt.add_option('--cppcheck-max-configs', dest='cppcheck_max_configs', + default='20', action='store', + help='maximum preprocessor (--max-configs) define iterations (default=20)') + + opt.add_option('--cppcheck-jobs', dest='cppcheck_jobs', + default='1', action='store', + help='number of jobs (-j) to do the checking work (default=1)') + +def configure(conf): + if conf.options.cppcheck_skip: + conf.env.CPPCHECK_SKIP = [True] + conf.env.CPPCHECK_STD_C = conf.options.cppcheck_std_c + conf.env.CPPCHECK_STD_CXX = conf.options.cppcheck_std_cxx + conf.env.CPPCHECK_MAX_CONFIGS = conf.options.cppcheck_max_configs + conf.env.CPPCHECK_BIN_ENABLE = conf.options.cppcheck_bin_enable + conf.env.CPPCHECK_LIB_ENABLE = conf.options.cppcheck_lib_enable + conf.env.CPPCHECK_JOBS = conf.options.cppcheck_jobs + if conf.options.cppcheck_jobs != '1' and ('unusedFunction' in conf.options.cppcheck_bin_enable or 'unusedFunction' in conf.options.cppcheck_lib_enable or 'all' in conf.options.cppcheck_bin_enable or 'all' in conf.options.cppcheck_lib_enable): + Logs.warn('cppcheck: unusedFunction cannot be used with multiple threads, cppcheck will disable it automatically') + conf.find_program('cppcheck', var='CPPCHECK') + + # set to True to get a single index.html file + conf.env.CPPCHECK_SINGLE_HTML = False + +@TaskGen.feature('c') +@TaskGen.feature('cxx') +def cppcheck_execute(self): + if hasattr(self.bld, 'conf'): + return + if len(self.env.CPPCHECK_SKIP) or Options.options.cppcheck_skip: + return + if getattr(self, 'cppcheck_skip', False): + return + task = self.create_task('cppcheck') + task.cmd = _tgen_create_cmd(self) + task.fatal = [] + if not Options.options.cppcheck_err_resume: + task.fatal.append('error') + + +def _tgen_create_cmd(self): + features = getattr(self, 'features', []) + std_c = self.env.CPPCHECK_STD_C + std_cxx = self.env.CPPCHECK_STD_CXX + max_configs = self.env.CPPCHECK_MAX_CONFIGS + bin_enable = self.env.CPPCHECK_BIN_ENABLE + lib_enable = self.env.CPPCHECK_LIB_ENABLE + jobs = self.env.CPPCHECK_JOBS + + cmd = self.env.CPPCHECK + args = ['--inconclusive','--report-progress','--verbose','--xml','--xml-version=2'] + args.append('--max-configs=%s' % max_configs) + args.append('-j %s' % jobs) + + if 'cxx' in features: + args.append('--language=c++') + args.append('--std=%s' % std_cxx) + else: + args.append('--language=c') + args.append('--std=%s' % std_c) + + if Options.options.cppcheck_check_config: + args.append('--check-config') + + if set(['cprogram','cxxprogram']) & set(features): + args.append('--enable=%s' % bin_enable) + else: + args.append('--enable=%s' % lib_enable) + + for src in self.to_list(getattr(self, 'source', [])): + if not isinstance(src, str): + src = repr(src) + args.append(src) + for inc in self.to_incnodes(self.to_list(getattr(self, 'includes', []))): + if not isinstance(inc, str): + inc = repr(inc) + args.append('-I%s' % inc) + for inc in self.to_incnodes(self.to_list(self.env.INCLUDES)): + if not isinstance(inc, str): + inc = repr(inc) + args.append('-I%s' % inc) + return cmd + args + + +class cppcheck(Task.Task): + quiet = True + + def run(self): + stderr = self.generator.bld.cmd_and_log(self.cmd, quiet=Context.STDERR, output=Context.STDERR) + self._save_xml_report(stderr) + defects = self._get_defects(stderr) + index = self._create_html_report(defects) + self._errors_evaluate(defects, index) + return 0 + + def _save_xml_report(self, s): + '''use cppcheck xml result string, add the command string used to invoke cppcheck + and save as xml file. + ''' + header = '%s\n' % s.splitlines()[0] + root = ElementTree.fromstring(s) + cmd = ElementTree.SubElement(root.find('cppcheck'), 'cmd') + cmd.text = str(self.cmd) + body = ElementTree.tostring(root).decode('us-ascii') + body_html_name = 'cppcheck-%s.xml' % self.generator.get_name() + if self.env.CPPCHECK_SINGLE_HTML: + body_html_name = 'cppcheck.xml' + node = self.generator.path.get_bld().find_or_declare(body_html_name) + node.write(header + body) + + def _get_defects(self, xml_string): + '''evaluate the xml string returned by cppcheck (on sdterr) and use it to create + a list of defects. + ''' + defects = [] + for error in ElementTree.fromstring(xml_string).iter('error'): + defect = {} + defect['id'] = error.get('id') + defect['severity'] = error.get('severity') + defect['msg'] = str(error.get('msg')).replace('<','<') + defect['verbose'] = error.get('verbose') + for location in error.findall('location'): + defect['file'] = location.get('file') + defect['line'] = str(int(location.get('line')) - 1) + defects.append(defect) + return defects + + def _create_html_report(self, defects): + files, css_style_defs = self._create_html_files(defects) + index = self._create_html_index(files) + self._create_css_file(css_style_defs) + return index + + def _create_html_files(self, defects): + sources = {} + defects = [defect for defect in defects if 'file' in defect] + for defect in defects: + name = defect['file'] + if not name in sources: + sources[name] = [defect] + else: + sources[name].append(defect) + + files = {} + css_style_defs = None + bpath = self.generator.path.get_bld().abspath() + names = list(sources.keys()) + for i in range(0,len(names)): + name = names[i] + if self.env.CPPCHECK_SINGLE_HTML: + htmlfile = 'cppcheck/%i.html' % (i) + else: + htmlfile = 'cppcheck/%s%i.html' % (self.generator.get_name(),i) + errors = sources[name] + files[name] = { 'htmlfile': '%s/%s' % (bpath, htmlfile), 'errors': errors } + css_style_defs = self._create_html_file(name, htmlfile, errors) + return files, css_style_defs + + def _create_html_file(self, sourcefile, htmlfile, errors): + name = self.generator.get_name() + root = ElementTree.fromstring(CPPCHECK_HTML_FILE) + title = root.find('head/title') + title.text = 'cppcheck - report - %s' % name + + body = root.find('body') + for div in body.findall('div'): + if div.get('id') == 'page': + page = div + break + for div in page.findall('div'): + if div.get('id') == 'header': + h1 = div.find('h1') + h1.text = 'cppcheck report - %s' % name + if div.get('id') == 'menu': + indexlink = div.find('a') + if self.env.CPPCHECK_SINGLE_HTML: + indexlink.attrib['href'] = 'index.html' + else: + indexlink.attrib['href'] = 'index-%s.html' % name + if div.get('id') == 'content': + content = div + srcnode = self.generator.bld.root.find_node(sourcefile) + hl_lines = [e['line'] for e in errors if 'line' in e] + formatter = CppcheckHtmlFormatter(linenos=True, style='colorful', hl_lines=hl_lines, lineanchors='line') + formatter.errors = [e for e in errors if 'line' in e] + css_style_defs = formatter.get_style_defs('.highlight') + lexer = pygments.lexers.guess_lexer_for_filename(sourcefile, "") + s = pygments.highlight(srcnode.read(), lexer, formatter) + table = ElementTree.fromstring(s) + content.append(table) + + s = ElementTree.tostring(root, method='html').decode('us-ascii') + s = CCPCHECK_HTML_TYPE + s + node = self.generator.path.get_bld().find_or_declare(htmlfile) + node.write(s) + return css_style_defs + + def _create_html_index(self, files): + name = self.generator.get_name() + root = ElementTree.fromstring(CPPCHECK_HTML_FILE) + title = root.find('head/title') + title.text = 'cppcheck - report - %s' % name + + body = root.find('body') + for div in body.findall('div'): + if div.get('id') == 'page': + page = div + break + for div in page.findall('div'): + if div.get('id') == 'header': + h1 = div.find('h1') + h1.text = 'cppcheck report - %s' % name + if div.get('id') == 'content': + content = div + self._create_html_table(content, files) + if div.get('id') == 'menu': + indexlink = div.find('a') + if self.env.CPPCHECK_SINGLE_HTML: + indexlink.attrib['href'] = 'index.html' + else: + indexlink.attrib['href'] = 'index-%s.html' % name + + s = ElementTree.tostring(root, method='html').decode('us-ascii') + s = CCPCHECK_HTML_TYPE + s + index_html_name = 'cppcheck/index-%s.html' % name + if self.env.CPPCHECK_SINGLE_HTML: + index_html_name = 'cppcheck/index.html' + node = self.generator.path.get_bld().find_or_declare(index_html_name) + node.write(s) + return node + + def _create_html_table(self, content, files): + table = ElementTree.fromstring(CPPCHECK_HTML_TABLE) + for name, val in files.items(): + f = val['htmlfile'] + s = '<tr><td colspan="4"><a href="%s">%s</a></td></tr>\n' % (f,name) + row = ElementTree.fromstring(s) + table.append(row) + + errors = sorted(val['errors'], key=lambda e: int(e['line']) if 'line' in e else sys.maxint) + for e in errors: + if not 'line' in e: + s = '<tr><td></td><td>%s</td><td>%s</td><td>%s</td></tr>\n' % (e['id'], e['severity'], e['msg']) + else: + attr = '' + if e['severity'] == 'error': + attr = 'class="error"' + s = '<tr><td><a href="%s#line-%s">%s</a></td>' % (f, e['line'], e['line']) + s+= '<td>%s</td><td>%s</td><td %s>%s</td></tr>\n' % (e['id'], e['severity'], attr, e['msg']) + row = ElementTree.fromstring(s) + table.append(row) + content.append(table) + + def _create_css_file(self, css_style_defs): + css = str(CPPCHECK_CSS_FILE) + if css_style_defs: + css = "%s\n%s\n" % (css, css_style_defs) + node = self.generator.path.get_bld().find_or_declare('cppcheck/style.css') + node.write(css) + + def _errors_evaluate(self, errors, http_index): + name = self.generator.get_name() + fatal = self.fatal + severity = [err['severity'] for err in errors] + problems = [err for err in errors if err['severity'] != 'information'] + + if set(fatal) & set(severity): + exc = "\n" + exc += "\nccpcheck detected fatal error(s) in task '%s', see report for details:" % name + exc += "\n file://%r" % (http_index) + exc += "\n" + self.generator.bld.fatal(exc) + + elif len(problems): + msg = "\nccpcheck detected (possible) problem(s) in task '%s', see report for details:" % name + msg += "\n file://%r" % http_index + msg += "\n" + Logs.error(msg) + + +class CppcheckHtmlFormatter(pygments.formatters.HtmlFormatter): + errors = [] + + def wrap(self, source, outfile): + line_no = 1 + for i, t in super(CppcheckHtmlFormatter, self).wrap(source, outfile): + # If this is a source code line we want to add a span tag at the end. + if i == 1: + for error in self.errors: + if int(error['line']) == line_no: + t = t.replace('\n', CPPCHECK_HTML_ERROR % error['msg']) + line_no += 1 + yield i, t + + +CCPCHECK_HTML_TYPE = \ +'<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">\n' + +CPPCHECK_HTML_FILE = """ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd" [<!ENTITY nbsp " ">]> +<html> + <head> + <title>cppcheck - report - XXX</title> + <link href="style.css" rel="stylesheet" type="text/css" /> + <style type="text/css"> + </style> + </head> + <body class="body"> + <div id="page-header"> </div> + <div id="page"> + <div id="header"> + <h1>cppcheck report - XXX</h1> + </div> + <div id="menu"> + <a href="index.html">Defect list</a> + </div> + <div id="content"> + </div> + <div id="footer"> + <div>cppcheck - a tool for static C/C++ code analysis</div> + <div> + Internet: <a href="http://cppcheck.sourceforge.net">http://cppcheck.sourceforge.net</a><br/> + Forum: <a href="http://apps.sourceforge.net/phpbb/cppcheck/">http://apps.sourceforge.net/phpbb/cppcheck/</a><br/> + IRC: #cppcheck at irc.freenode.net + </div> + + </div> + + </div> + <div id="page-footer"> </div> + </body> +</html> +""" + +CPPCHECK_HTML_TABLE = """ +<table> + <tr> + <th>Line</th> + <th>Id</th> + <th>Severity</th> + <th>Message</th> + </tr> +</table> +""" + +CPPCHECK_HTML_ERROR = \ +'<span style="background: #ffaaaa;padding: 3px;"><--- %s</span>\n' + +CPPCHECK_CSS_FILE = """ +body.body { + font-family: Arial; + font-size: 13px; + background-color: black; + padding: 0px; + margin: 0px; +} + +.error { + font-family: Arial; + font-size: 13px; + background-color: #ffb7b7; + padding: 0px; + margin: 0px; +} + +th, td { + min-width: 100px; + text-align: left; +} + +#page-header { + clear: both; + width: 1200px; + margin: 20px auto 0px auto; + height: 10px; + border-bottom-width: 2px; + border-bottom-style: solid; + border-bottom-color: #aaaaaa; +} + +#page { + width: 1160px; + margin: auto; + border-left-width: 2px; + border-left-style: solid; + border-left-color: #aaaaaa; + border-right-width: 2px; + border-right-style: solid; + border-right-color: #aaaaaa; + background-color: White; + padding: 20px; +} + +#page-footer { + clear: both; + width: 1200px; + margin: auto; + height: 10px; + border-top-width: 2px; + border-top-style: solid; + border-top-color: #aaaaaa; +} + +#header { + width: 100%; + height: 70px; + background-image: url(logo.png); + background-repeat: no-repeat; + background-position: left top; + border-bottom-style: solid; + border-bottom-width: thin; + border-bottom-color: #aaaaaa; +} + +#menu { + margin-top: 5px; + text-align: left; + float: left; + width: 100px; + height: 300px; +} + +#menu > a { + margin-left: 10px; + display: block; +} + +#content { + float: left; + width: 1020px; + margin: 5px; + padding: 0px 10px 10px 10px; + border-left-style: solid; + border-left-width: thin; + border-left-color: #aaaaaa; +} + +#footer { + padding-bottom: 5px; + padding-top: 5px; + border-top-style: solid; + border-top-width: thin; + border-top-color: #aaaaaa; + clear: both; + font-size: 10px; +} + +#footer > div { + float: left; + width: 33%; +} + +""" + |