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