Subversion Repositories s80186

#!/usr/bin/env python

# Copyright Jamie Iles, 2017

#

# This file is part of s80x86.

#

# s80x86 is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# s80x86 is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with s80x86.  If not, see .

# -*- coding:utf-8 -*-

#

# A report generator for gcov 3.4

#

# This routine generates a format that is similar to the format generated

# by the Python coverage.py module.  This code is similar to the

# data processing performed by lcov's geninfo command.  However, we

# don't worry about parsing the *.gcna files, and backwards compatibility for

# older versions of gcov is not supported.

#

# Outstanding issues

#   - verify that gcov 3.4 or newer is being used

#   - verify support for symbolic links

#

# gcovr is a FAST project.  For documentation, bug reporting, and

# updates, see https://software.sandia.gov/trac/fast/wiki/gcovr

#

#  _________________________________________________________________________

#

#  Gcovr: A parsing and reporting tool for gcov

#  Copyright (c) 2013 Sandia Corporation.

#  This software is distributed under the BSD License.

#  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,

#  the U.S. Government retains certain rights in this software.

#  For more information, see the README.md file.

# _________________________________________________________________________

#

# $Revision$

# $Date$

#

try:

    import html

except:

    import cgi as html

import copy

import os

import re

import subprocess

import sys

import time

import xml.dom.minidom

import datetime

import posixpath

from optparse import OptionParser

from string import Template

from os.path import normpath

medium_coverage = 75.0

high_coverage = 90.0

low_color = "LightPink"

medium_color = "#FFFF55"

high_color = "LightGreen"

covered_color = "LightGreen"

uncovered_color = "LightPink"

__version__ = "3.3-prerelease"

src_revision = "$Revision$"

output_re = re.compile("[Cc]reating [`'](.*)'$")

source_re = re.compile("[Cc]annot open (source|graph) file")

starting_dir = os.getcwd()

exclude_line_flag = "_EXCL_"

exclude_line_pattern = re.compile('([GL]COVR?)_EXCL_(LINE|START|STOP)')

c_style_comment_pattern = re.compile('/\*.*?\*/')

cpp_style_comment_pattern = re.compile('//.*?$')

def version_str():

    ans = __version__

    m = re.match('\$Revision:\s*(\S+)\s*\$', src_revision)

    if m:

        ans = ans + " (r%s)" % (m.group(1))

    return ans

#

# Container object for coverage statistics

#

class CoverageData(object):

    def __init__(

            self, fname, uncovered, uncovered_exceptional, covered, branches,

            noncode):

        self.fname = fname

        # Shallow copies are cheap & "safe" because the caller will

        # throw away their copies of covered & uncovered after calling

        # us exactly *once*

        self.uncovered = copy.copy(uncovered)

        self.uncovered_exceptional = copy.copy(uncovered_exceptional)

        self.covered = copy.copy(covered)

        self.noncode = copy.copy(noncode)

        # But, a deep copy is required here

        self.all_lines = copy.deepcopy(uncovered)

        self.all_lines.update(uncovered_exceptional)

        self.all_lines.update(covered.keys())

        self.branches = copy.deepcopy(branches)

    def update(

            self, uncovered, uncovered_exceptional, covered, branches,

            noncode):

        self.all_lines.update(uncovered)

        self.all_lines.update(uncovered_exceptional)

        self.all_lines.update(covered.keys())

        self.uncovered.update(uncovered)

        self.uncovered_exceptional.update(uncovered_exceptional)

        self.noncode.intersection_update(noncode)

        for k in covered.keys():

            self.covered[k] = self.covered.get(k, 0) + covered[k]

        for k in branches.keys():

            for b in branches[k]:

                d = self.branches.setdefault(k, {})

                d[b] = d.get(b, 0) + branches[k][b]

        self.uncovered.difference_update(self.covered.keys())

        self.uncovered_exceptional.difference_update(self.covered.keys())

    def uncovered_str(self, exceptional):

        if options.show_branch:

            #

            # Don't do any aggregation on branch results

            #

            tmp = []

            for line in self.branches.keys():

                for branch in self.branches[line]:

                    if self.branches[line][branch] == 0:

                        tmp.append(line)

                        break

            tmp.sort()

            return ",".join([str(x) for x in tmp]) or ""

        if exceptional:

            tmp = list(self.uncovered_exceptional)

        else:

            tmp = list(self.uncovered)

        if len(tmp) == 0:

            return ""

        #

        # Walk through the uncovered lines in sorted order.

        # Find blocks of consecutive uncovered lines, and return

        # a string with that information.

        #

        tmp.sort()

        first = None

        last = None

        ranges = []

        for item in tmp:

            if last is None:

                first = item

                last = item

            elif item == (last + 1):

                last = item

            else:

                #

                # Should we include noncode lines in the range of lines

                # to be covered???  This simplifies the ranges summary, but it

                # provides a counterintuitive listing.

                #

                #if len(self.noncode.intersection(range(last+1,item))) \

                #       == item - last - 1:

                #    last = item

                #    continue

                #

                if first == last:

                    ranges.append(str(first))

                else:

                    ranges.append(str(first) + "-" + str(last))

                first = item

                last = item

        if first == last:

            ranges.append(str(first))

        else:

            ranges.append(str(first) + "-" + str(last))

        return ",".join(ranges)

    def coverage(self):

        if options.show_branch:

            total = 0

            cover = 0

            for line in self.branches.keys():

                for branch in self.branches[line].keys():

                    total += 1

                    cover += self.branches[line][branch] > 0 and 1 or 0

        else:

            total = len(self.all_lines)

            cover = len(self.covered)

        percent = total and str(int(100.0 * cover / total)) or "--"

        return (total, cover, percent)

    def summary(self):

        tmp = options.root_filter.sub('', self.fname)

        if not self.fname.endswith(tmp):

            # Do no truncation if the filter does not start matching at

            # the beginning of the string

            tmp = self.fname

        tmp = tmp.ljust(40)

        if len(tmp) > 40:

            tmp = tmp + "\n" + " " * 40

        (total, cover, percent) = self.coverage()

        uncovered_lines = self.uncovered_str(False)

        if not options.show_branch:

            t = self.uncovered_str(True)

            if len(t):

                uncovered_lines += " [* " + t + "]"

        return (total, cover,

                tmp + str(total).rjust(8) + str(cover).rjust(8) +

                percent.rjust(6) + "%   " + uncovered_lines)

def resolve_symlinks(orig_path):

    """

    Return the normalized absolute path name with all symbolic links resolved

    """

    return os.path.realpath(orig_path)

    # WEH - why doesn't os.path.realpath() suffice here?

    #

    drive, tmp = os.path.splitdrive(os.path.abspath(orig_path))

    if not drive:

        drive = os.path.sep

    parts = tmp.split(os.path.sep)

    actual_path = [drive]

    while parts:

        actual_path.append(parts.pop(0))

        if not os.path.islink(os.path.join(*actual_path)):

            continue

        actual_path[-1] = os.readlink(os.path.join(*actual_path))

        tmp_drive, tmp_path = os.path.splitdrive(

            resolve_symlinks(os.path.join(*actual_path)))

        if tmp_drive:

            drive = tmp_drive

        actual_path = [drive] + tmp_path.split(os.path.sep)

    return os.path.join(*actual_path)

#

# Class that creates path aliases

#

class PathAliaser(object):

    def __init__(self):

        self.aliases = {}

        self.master_targets = set()

        self.preferred_name = {}

    def path_startswith(self, path, base):

        return path.startswith(base) and (

            len(base) == len(path) or path[len(base)] == os.path.sep)

    def master_path(self, path):

        match_found = False

        while True:

            for base, alias in self.aliases.items():

                if self.path_startswith(path, base):

                    path = alias + path[len(base):]

                    match_found = True

                    break

            for master_base in self.master_targets:

                if self.path_startswith(path, master_base):

                    return path, master_base, True

            if match_found:

                sys.stderr.write(

                    "(ERROR) violating fundamental assumption while walking "

                    "directory tree.\n\tPlease report this to the gcovr "

                    "developers.\n")

            return path, None, match_found

    def unalias_path(self, path):

        path = resolve_symlinks(path)

        path, master_base, known_path = self.master_path(path)

        if not known_path:

            return path

        # Try and resolve the preferred name for this location

        if master_base in self.preferred_name:

            return self.preferred_name[master_base] + path[len(master_base):]

        return path

    def add_master_target(self, master):

        self.master_targets.add(master)

    def add_alias(self, target, master):

        self.aliases[target] = master

    def set_preferred(self, master, preferred):

        self.preferred_name[master] = preferred

aliases = PathAliaser()

# This is UGLY.  Here's why: UNIX resolves symbolic links by walking the

# entire directory structure.  What that means is that relative links

# are always relative to the actual directory inode, and not the

# "virtual" path that the user might have traversed (over symlinks) on

# the way to that directory.  Here's the canonical example:

#

#   a / b / c / testfile

#   a / d / e --> ../../a/b

#   m / n --> /a

#   x / y / z --> /m/n/d

#

# If we start in "y", we will see the following directory structure:

#   y

#   |-- z

#       |-- e

#           |-- c

#               |-- testfile

#

# The problem is that using a simple traversal based on the Python

# documentation:

#

#    (os.path.join(os.path.dirname(path), os.readlink(result)))

#

# will not work: we will see a link to /m/n/d from /x/y, but completely

# miss the fact that n is itself a link.  If we then naively attempt to

# apply the "c" relative link, we get an intermediate path that looks

# like "/m/n/d/e/../../a/b", which would get normalized to "/m/n/a/b"; a

# nonexistant path.  The solution is that we need to walk the original

# path, along with the full path of all links 1 directory at a time and

# check for embedded symlinks.

#

#

# NB:  Users have complained that this code causes a performance issue.

# I have replaced this logic with os.walk(), which works for Python >= 2.6

#

def link_walker(path):

    if sys.version_info >= (2, 6):

        for root, dirs, files in os.walk(

            os.path.abspath(path), followlinks=True

        ):

            yield (os.path.abspath(os.path.realpath(root)), dirs, files)

    else:

        targets = [os.path.abspath(path)]

        while targets:

            target_dir = targets.pop(0)

            actual_dir = resolve_symlinks(target_dir)

            #print "target dir: %s  (%s)" % (target_dir, actual_dir)

            master_name, master_base, visited = aliases.master_path(actual_dir)

            if visited:

                #print "  ...root already visited as %s" % master_name

                aliases.add_alias(target_dir, master_name)

                continue

            if master_name != target_dir:

                aliases.set_preferred(master_name, target_dir)

                aliases.add_alias(target_dir, master_name)

            aliases.add_master_target(master_name)

            #print "  ...master name = %s" % master_name

            #print "  ...walking %s" % target_dir

            for root, dirs, files in os.walk(target_dir, topdown=True):

                #print "    ...reading %s" % root

                for d in dirs:

                    tmp = os.path.abspath(os.path.join(root, d))

                    #print "    ...checking %s" % tmp

                    if os.path.islink(tmp):

                        #print "      ...buffering link %s" % tmp

                        targets.append(tmp)

                yield (root, dirs, files)

def search_file(expr, path):

    """

    Given a search path, recursively descend to find files that match a

    regular expression.

    """

    ans = []

    pattern = re.compile(expr)

    if path is None or path == ".":

        path = os.getcwd()

    elif not os.path.exists(path):

        raise IOError("Unknown directory '" + path + "'")

    for root, dirs, files in link_walker(path):

        for name in files:

            if pattern.match(name):

                name = os.path.join(root, name)

                if os.path.islink(name):

                    ans.append(os.path.abspath(os.readlink(name)))

                else:

                    ans.append(os.path.abspath(name))

    return ans

#

# Get the list of datafiles in the directories specified by the user

#

def get_datafiles(flist, options):

    allfiles = set()

    for dir_ in flist:

        if options.gcov_files:

            if options.verbose:

                sys.stdout.write(

                    "Scanning directory %s for gcov files...\n" % (dir_, )

                )

            files = search_file(".*\.gcov$", dir_)

            gcov_files = [file for file in files if file.endswith('gcov')]

            if options.verbose:

                sys.stdout.write(

                    "Found %d files (and will process %d)\n" %

                    (len(files), len(gcov_files))

                )

            allfiles.update(gcov_files)

        else:

            if options.verbose:

                sys.stdout.write(

                    "Scanning directory %s for gcda/gcno files...\n" % (dir_, )

                )

            files = search_file(".*\.gc(da|no)$", dir_)

            # gcno files will *only* produce uncovered results; however,

            # that is useful information for the case where a compilation

            # unit is never actually exercised by the test code.  So, we

            # will process gcno files, but ONLY if there is no corresponding

            # gcda file.

            gcda_files = [

                filenm for filenm in files if filenm.endswith('gcda')

            ]

            tmp = set(gcda_files)

            gcno_files = [

                filenm for filenm in files if

                filenm.endswith('gcno') and filenm[:-2] + 'da' not in tmp

            ]

            if options.verbose:

                sys.stdout.write(

                    "Found %d files (and will process %d)\n" %

                    (len(files), len(gcda_files) + len(gcno_files)))

            allfiles.update(gcda_files)

            allfiles.update(gcno_files)

    return allfiles

#

# Process a single gcov datafile

#

def process_gcov_data(data_fname, covdata, options):

    INPUT = open(data_fname, "r")

    #

    # Get the filename

    #

    line = INPUT.readline()

    segments = line.split(':', 3)

    if len(segments) != 4 or not \

            segments[2].lower().strip().endswith('source'):

        raise RuntimeError(

            'Fatal error parsing gcov file, line 1: \n\t"%s"' % line.rstrip()

        )

    currdir = os.getcwd()

    os.chdir(starting_dir)

    if sys.version_info >= (2, 6):

        fname = os.path.abspath((segments[-1]).strip())

    else:

        fname = aliases.unalias_path(os.path.abspath((segments[-1]).strip()))

    os.chdir(currdir)

    if options.verbose:

        sys.stdout.write("Parsing coverage data for file %s\n" % fname)

    #

    # Return if the filename does not match the filter

    #

    filtered_fname = None

    for i in range(0, len(options.filter)):

        if options.filter[i].match(fname):

            filtered_fname = options.root_filter.sub('', fname)

            break

    if filtered_fname is None:

        if options.verbose:

            sys.stdout.write("  Filtering coverage data for file %s\n" % fname)

        return

    #

    # Return if the filename matches the exclude pattern

    #

    for exc in options.exclude:

        if (filtered_fname is not None and exc.match(filtered_fname)) or \

                exc.match(fname) or \

                exc.match(os.path.abspath(fname)):

            if options.verbose:

                sys.stdout.write(

                    "  Excluding coverage data for file %s\n" % fname

                )

            return

    #

    # Parse each line, and record the lines

    # that are uncovered

    #

    excluding = []

    noncode = set()

    uncovered = set()

    uncovered_exceptional = set()

    covered = {}

    branches = {}

    #first_record=True

    lineno = 0

    last_code_line = ""

    last_code_lineno = 0

    last_code_line_excluded = False

    for line in INPUT:

        segments = line.split(":", 2)

        #print "\t","Y", segments

        tmp = segments[0].strip()

        if len(segments) > 1:

            try:

                lineno = int(segments[1].strip())

            except:

                pass  # keep previous line number!

        if exclude_line_flag in line:

            excl_line = False

            for header, flag in exclude_line_pattern.findall(line):

                if flag == 'START':

                    excluding.append((header, lineno))

                elif flag == 'STOP':

                    if excluding:

                        _header, _line = excluding.pop()

                        if _header != header:

                            sys.stderr.write(

                                "(WARNING) %s_EXCL_START found on line %s "

                                "was terminated by %s_EXCL_STOP on line %s, "

                                "when processing %s\n"

                                % (_header, _line, header, lineno, fname)

                            )

                    else:

                        sys.stderr.write(

                            "(WARNING) mismatched coverage exclusion flags.\n"

                            "\t%s_EXCL_STOP found on line %s without "

                            "corresponding %s_EXCL_START, when processing %s\n"

                            % (header, lineno, header, fname)

                        )

                elif flag == 'LINE':

                    # We buffer the line exclusion so that it is always

                    # the last thing added to the exclusion list (and so

                    # only ONE is ever added to the list).  This guards

                    # against cases where puts a _LINE and _START (or

                    # _STOP) on the same line... it also guards against

                    # duplicate _LINE flags.

                    excl_line = True

            if excl_line:

                excluding.append(False)

        is_code_statement = False

        if tmp[0] == '-' or (excluding and tmp[0] in "#=0123456789"):

            is_code_statement = True

            code = segments[2].strip()

            # remember certain non-executed lines

            if excluding or len(code) == 0 or code == "{" or code == "}" or \

                    code.startswith("//") or code == 'else':

                noncode.add(lineno)

        elif tmp[0] == '#':

            is_code_statement = True

            uncovered.add(lineno)

        elif tmp[0] == '=':

            is_code_statement = True

            uncovered_exceptional.add(lineno)

        elif tmp[0] in "0123456789":

            is_code_statement = True

            covered[lineno] = int(segments[0].strip())

        elif tmp.startswith('branch'):

            exclude_branch = False

            if options.exclude_unreachable_branches and \

                    lineno == last_code_lineno:

                if last_code_line_excluded:

                    exclude_branch = True

                    exclude_reason = "marked with exclude pattern"

                else:

                    code = last_code_line

                    code = re.sub(cpp_style_comment_pattern, '', code)

                    code = re.sub(c_style_comment_pattern, '', code)

                    code = code.strip()

                    code_nospace = code.replace(' ', '')

                    exclude_branch = \

                        code in ['', '{', '}'] or code_nospace == '{}'

                    exclude_reason = "detected as compiler-generated code"

            if exclude_branch:

                if options.verbose:

                    sys.stdout.write(

                        "Excluding unreachable branch on line %d "

                        "in file %s (%s).\n"

                        % (lineno, fname, exclude_reason)

                    )

            else:

                fields = line.split()

                try:

                    count = int(fields[3])

                except:

                    count = 0

                branches.setdefault(lineno, {})[int(fields[1])] = count

        elif tmp.startswith('call'):

            pass

        elif tmp.startswith('function'):

            pass

        elif tmp[0] == 'f':

            pass

            #if first_record:

                #first_record=False

                #uncovered.add(prev)

            #if prev in uncovered:

                #tokens=re.split('[ \t]+',tmp)

                #if tokens[3] != "0":

                    #uncovered.remove(prev)

            #prev = int(segments[1].strip())

            #first_record=True

        else:

            sys.stderr.write(

                "(WARNING) Unrecognized GCOV output: '%s'\n"

                "\tThis is indicitive of a gcov output parse error.\n"

                "\tPlease report this to the gcovr developers." % tmp

            )

        # save the code line to use it later with branches

        if is_code_statement:

            last_code_line = "".join(segments[2:])

            last_code_lineno = lineno

            last_code_line_excluded = False

            if excluding:

                last_code_line_excluded = True

        # clear the excluding flag for single-line excludes

        if excluding and not excluding[-1]:

            excluding.pop()

    ##print 'uncovered',uncovered

    ##print 'covered',covered

    ##print 'branches',branches

    ##print 'noncode',noncode

    #

    # If the file is already in covdata, then we

    # remove lines that are covered here.  Otherwise,

    # initialize covdata

    #

    if not fname in covdata:

        covdata[fname] = CoverageData(

            fname, uncovered, uncovered_exceptional, covered, branches, noncode

        )

    else:

        covdata[fname].update(

            uncovered, uncovered_exceptional, covered, branches, noncode

        )

    INPUT.close()

    for header, line in excluding:

        sys.stderr.write("(WARNING) The coverage exclusion region start flag "

                         "%s_EXCL_START\n\ton line %d did not have "

                         "corresponding %s_EXCL_STOP flag\n\t in file %s.\n"

                         % (header, line, header, fname))

#

# Process a datafile (generated by running the instrumented application)

# and run gcov with the corresponding arguments

#

# This is trickier than it sounds: The gcda/gcno files are stored in the

# same directory as the object files; however, gcov must be run from the

# same directory where gcc/g++ was run.  Normally, the user would know

# where gcc/g++ was invoked from and could tell gcov the path to the

# object (and gcda) files with the --object-directory command.

# Unfortunately, we do everything backwards: gcovr looks for the gcda

# files and then has to infer the original gcc working directory.

#

# In general, (but not always) we can assume that the gcda file is in a

# subdirectory of the original gcc working directory, so we will first

# try ".", and on error, move up the directory tree looking for the

# correct working directory (letting gcov's own error codes dictate when

# we hit the right directory).  This covers 90+% of the "normal" cases.

# The exception to this is if gcc was invoked with "-o ../[...]" (i.e.,

# the object directory was a peer (not a parent/child) of the cwd.  In

# this case, things are really tough.  We accept an argument

# (--object-directory) that SHOULD BE THE SAME as the one povided to

# gcc.  We will then walk that path (backwards) in the hopes of

# identifying the original gcc working directory (there is a bit of

# trial-and-error here)

#

def process_datafile(filename, covdata, options):

    #print ""

    #print "PROCESS",filename

    #

    # Launch gcov

    #

    abs_filename = os.path.abspath(filename)

    dirname, fname = os.path.split(abs_filename)

    #(name,ext) = os.path.splitext(base)

    potential_wd = []

    errors = []

    Done = False

    if options.objdir:

        #print "X - objdir"

        src_components = abs_filename.split(os.sep)

        components = normpath(options.objdir).split(os.sep)

        idx = 1

        while idx <= len(components):

            if idx > len(src_components):

                break

            if components[-1 * idx] != src_components[-1 * idx]:

                break

            idx += 1

        if idx > len(components):

            pass  # a parent dir; the normal process will find it

        elif components[-1 * idx] == '..':

            # NB: os.path.join does not re-add leading '/' characters!?!

            dirs = [

                os.path.sep.join(src_components[:len(src_components) - idx])

            ]

            while idx <= len(components) and components[-1 * idx] == '..':

                tmp = []

                for d in dirs:

                    for f in os.listdir(d):

                        x = os.path.join(d, f)

                        if os.path.isdir(x):

                            tmp.append(x)

                dirs = tmp

                idx += 1

            potential_wd = dirs

        else:

            if components[0] == '':

                # absolute path

                tmp = [options.objdir]

            else:

                # relative path: check relative to both the cwd and the

                # gcda file

                tmp = [

                    os.path.join(x, options.objdir) for x in

                    [os.path.dirname(abs_filename), os.getcwd()]

                ]

            potential_wd = [

                testdir for testdir in tmp if os.path.isdir(testdir)

            ]

            if len(potential_wd) == 0:

                errors.append("ERROR: cannot identify the location where GCC "

                              "was run using --object-directory=%s\n" %

                              options.objdir)

            # Revert to the normal

            #sys.exit(1)

    # no objdir was specified (or it was a parent dir); walk up the dir tree

    if len(potential_wd) == 0:

        potential_wd.append(root_dir)

        #print "X - potential_wd", root_dir

        wd = os.path.split(abs_filename)[0]

        while True:

            potential_wd.append(wd)

            wd = os.path.split(wd)[0]

            if wd == potential_wd[-1]:

                #

                # Stop at the root of the file system

                #

                break

    cmd = [

        options.gcov_cmd, abs_filename,

        "--branch-counts", "--branch-probabilities", "--preserve-paths",

        '--object-directory', dirname

    ]

    # NB: Currently, we will only parse English output

    env = dict(os.environ)

    env['LC_ALL'] = 'en_US'

    #print "HERE", potential_wd

    while len(potential_wd) > 0 and not Done:

        # NB: either len(potential_wd) == 1, or all entires are absolute

        # paths, so we don't have to chdir(starting_dir) at every

        # iteration.

        #

        # Iterate from the end of the potential_wd list, which is the root

        # directory

        #

        dir_ = potential_wd.pop(0)

        #print "X DIR:", dir_

        os.chdir(dir_)

        if options.verbose:

            sys.stdout.write(

                "Running gcov: '%s' in '%s'\n" % (' '.join(cmd), os.getcwd())

            )

        out, err = subprocess.Popen(

            cmd, env=env,

            stdout=subprocess.PIPE,

            stderr=subprocess.PIPE).communicate()

        out = out.decode('utf-8')

        err = err.decode('utf-8')

        # find the files that gcov created

        gcov_files = {'active' : [], 'filter' : [], 'exclude' : []}

        for line in out.splitlines():

            found = output_re.search(line.strip())

            if found is not None:

                fname = found.group(1)

                if not options.gcov_filter.match(fname):

                    if options.verbose:

                        sys.stdout.write("Filtering gcov file %s\n" % fname)

                    gcov_files['filter'].append(fname)

                    continue

                exclude = False

                for exc in options.gcov_exclude:

                    if exc.match(options.gcov_filter.sub('', fname)) or \

                            exc.match(fname) or \

                            exc.match(os.path.abspath(fname)):

                        exclude = True

                        break

                if not exclude:

                    gcov_files['active'].append(fname)

                elif options.verbose:

                    sys.stdout.write("Excluding gcov file %s\n" % fname)

                    gcov_files['exclude'].append(fname)

        #print "HERE", err, "XXX", source_re.search(err)

        if source_re.search(err):

            #

            # gcov tossed errors: try the next potential_wd

            #

            errors.append(err)

        else:

            #

            # Process *.gcov files

            #

            for fname in gcov_files['active']:

                process_gcov_data(fname, covdata, options)

            Done = True

        if not options.keep:

            for group in gcov_files.values():

                for fname in group:

                    if os.path.exists(fname):

                        # Only remove files that actually exist.

                        os.remove(fname)

    os.chdir(starting_dir)

    if options.delete:

        if not abs_filename.endswith('gcno'):

            os.remove(abs_filename)

    if not Done:

        sys.stderr.write(

            "(WARNING) GCOV produced the following errors processing %s:\n"

            "\t   %s"

            "\t(gcovr could not infer a working directory that resolved it.)\n"

            % (filename, "\t   ".join(errors))

        )

#

#  Process Already existing gcov files

#

def process_existing_gcov_file(filename, covdata, options):

    if not options.gcov_filter.match(filename):

        if options.verbose:

            sys.stdout.write("Filtering gcov file %s\n" % filename)

        return

    for exc in options.gcov_exclude:

        if exc.match(options.gcov_filter.sub('', filename)) or \

                exc.match(filename) or \

                exc.match(os.path.abspath(filename)):

            if options.verbose:

                sys.stdout.write("Excluding gcov file %s\n" % filename)

            return

    process_gcov_data(filename, covdata, options)

    if not options.keep:

        if os.path.exists(filename):

            # Only remove files that actually exist.

            os.remove(filename)

#

# Produce the classic gcovr text report

#

def print_text_report(covdata):

    def _num_uncovered(key):

        (total, covered, percent) = covdata[key].coverage()

        return total - covered

    def _percent_uncovered(key):

        (total, covered, percent) = covdata[key].coverage()

        if covered:

            return -1.0 * covered / total

        else:

            return total or 1e6

    def _alpha(key):

        return key

    if options.output:

        OUTPUT = open(options.output, 'w')

    else:

        OUTPUT = sys.stdout

    total_lines = 0

    total_covered = 0

    # Header

    OUTPUT.write("-" * 78 + '\n')

    OUTPUT.write(" " * 27 + "GCC Code Coverage Report\n")

    OUTPUT.write("Directory: " + options.root + "\n")

    OUTPUT.write("-" * 78 + '\n')

    a = options.show_branch and "Branches" or "Lines"

    b = options.show_branch and "Taken" or "Exec"

    c = "Missing"

    OUTPUT.write(

        "File".ljust(40) + a.rjust(8) + b.rjust(8) + "  Cover   " + c + "\n"

    )

    OUTPUT.write("-" * 78 + '\n')

    # Data

    keys = list(covdata.keys())

    keys.sort(

        key=options.sort_uncovered and _num_uncovered or

        options.sort_percent and _percent_uncovered or _alpha

    )

    for key in keys:

        (t, n, txt) = covdata[key].summary()

        total_lines += t

        total_covered += n

        OUTPUT.write(txt + '\n')

    # Footer & summary

    OUTPUT.write("-" * 78 + '\n')

    percent = total_lines and str(int(100.0 * total_covered / total_lines)) \

        or "--"