DebugClients/Python/coverage/html.py

branch
debugger speed
changeset 5178
878ce843ca9f
parent 5051
3586ebd9fac8
child 6219
d6c795b5ce33
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DebugClients/Python/coverage/html.py	Mon Sep 19 22:47:52 2016 +0200
@@ -0,0 +1,435 @@
+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
+
+"""HTML reporting for coverage.py."""
+
+import datetime
+import json
+import os
+import shutil
+
+import coverage
+from coverage import env
+from coverage.backward import iitems
+from coverage.files import flat_rootname
+from coverage.misc import CoverageException, Hasher, isolate_module
+from coverage.report import Reporter
+from coverage.results import Numbers
+from coverage.templite import Templite
+
+os = isolate_module(os)
+
+
+# Static files are looked for in a list of places.
+STATIC_PATH = [
+    # The place Debian puts system Javascript libraries.
+    "/usr/share/javascript",
+
+    # Our htmlfiles directory.
+    os.path.join(os.path.dirname(__file__), "htmlfiles"),
+]
+
+
+def data_filename(fname, pkgdir=""):
+    """Return the path to a data file of ours.
+
+    The file is searched for on `STATIC_PATH`, and the first place it's found,
+    is returned.
+
+    Each directory in `STATIC_PATH` is searched as-is, and also, if `pkgdir`
+    is provided, at that sub-directory.
+
+    """
+    tried = []
+    for static_dir in STATIC_PATH:
+        static_filename = os.path.join(static_dir, fname)
+        if os.path.exists(static_filename):
+            return static_filename
+        else:
+            tried.append(static_filename)
+        if pkgdir:
+            static_filename = os.path.join(static_dir, pkgdir, fname)
+            if os.path.exists(static_filename):
+                return static_filename
+            else:
+                tried.append(static_filename)
+    raise CoverageException(
+        "Couldn't find static file %r from %r, tried: %r" % (fname, os.getcwd(), tried)
+    )
+
+
+def read_data(fname):
+    """Return the contents of a data file of ours."""
+    with open(data_filename(fname)) as data_file:
+        return data_file.read()
+
+
+def write_html(fname, html):
+    """Write `html` to `fname`, properly encoded."""
+    with open(fname, "wb") as fout:
+        fout.write(html.encode('ascii', 'xmlcharrefreplace'))
+
+
+class HtmlReporter(Reporter):
+    """HTML reporting."""
+
+    # These files will be copied from the htmlfiles directory to the output
+    # directory.
+    STATIC_FILES = [
+        ("style.css", ""),
+        ("jquery.min.js", "jquery"),
+        ("jquery.debounce.min.js", "jquery-debounce"),
+        ("jquery.hotkeys.js", "jquery-hotkeys"),
+        ("jquery.isonscreen.js", "jquery-isonscreen"),
+        ("jquery.tablesorter.min.js", "jquery-tablesorter"),
+        ("coverage_html.js", ""),
+        ("keybd_closed.png", ""),
+        ("keybd_open.png", ""),
+    ]
+
+    def __init__(self, cov, config):
+        super(HtmlReporter, self).__init__(cov, config)
+        self.directory = None
+        title = self.config.html_title
+        if env.PY2:
+            title = title.decode("utf8")
+        self.template_globals = {
+            'escape': escape,
+            'pair': pair,
+            'title': title,
+            '__url__': coverage.__url__,
+            '__version__': coverage.__version__,
+        }
+        self.source_tmpl = Templite(read_data("pyfile.html"), self.template_globals)
+
+        self.coverage = cov
+
+        self.files = []
+        self.has_arcs = self.coverage.data.has_arcs()
+        self.status = HtmlStatus()
+        self.extra_css = None
+        self.totals = Numbers()
+        self.time_stamp = datetime.datetime.now().strftime('%Y-%m-%d %H:%M')
+
+    def report(self, morfs):
+        """Generate an HTML report for `morfs`.
+
+        `morfs` is a list of modules or file names.
+
+        """
+        assert self.config.html_dir, "must give a directory for html reporting"
+
+        # Read the status data.
+        self.status.read(self.config.html_dir)
+
+        # Check that this run used the same settings as the last run.
+        m = Hasher()
+        m.update(self.config)
+        these_settings = m.hexdigest()
+        if self.status.settings_hash() != these_settings:
+            self.status.reset()
+            self.status.set_settings_hash(these_settings)
+
+        # The user may have extra CSS they want copied.
+        if self.config.extra_css:
+            self.extra_css = os.path.basename(self.config.extra_css)
+
+        # Process all the files.
+        self.report_files(self.html_file, morfs, self.config.html_dir)
+
+        if not self.files:
+            raise CoverageException("No data to report.")
+
+        # Write the index file.
+        self.index_file()
+
+        self.make_local_static_report_files()
+        return self.totals.n_statements and self.totals.pc_covered
+
+    def make_local_static_report_files(self):
+        """Make local instances of static files for HTML report."""
+        # The files we provide must always be copied.
+        for static, pkgdir in self.STATIC_FILES:
+            shutil.copyfile(
+                data_filename(static, pkgdir),
+                os.path.join(self.directory, static)
+            )
+
+        # The user may have extra CSS they want copied.
+        if self.extra_css:
+            shutil.copyfile(
+                self.config.extra_css,
+                os.path.join(self.directory, self.extra_css)
+            )
+
+    def file_hash(self, source, fr):
+        """Compute a hash that changes if the file needs to be re-reported."""
+        m = Hasher()
+        m.update(source)
+        self.coverage.data.add_to_hash(fr.filename, m)
+        return m.hexdigest()
+
+    def html_file(self, fr, analysis):
+        """Generate an HTML file for one source file."""
+        source = fr.source()
+
+        # Find out if the file on disk is already correct.
+        rootname = flat_rootname(fr.relative_filename())
+        this_hash = self.file_hash(source.encode('utf-8'), fr)
+        that_hash = self.status.file_hash(rootname)
+        if this_hash == that_hash:
+            # Nothing has changed to require the file to be reported again.
+            self.files.append(self.status.index_info(rootname))
+            return
+
+        self.status.set_file_hash(rootname, this_hash)
+
+        # Get the numbers for this file.
+        nums = analysis.numbers
+
+        if self.has_arcs:
+            missing_branch_arcs = analysis.missing_branch_arcs()
+            arcs_executed = analysis.arcs_executed()
+
+        # These classes determine which lines are highlighted by default.
+        c_run = "run hide_run"
+        c_exc = "exc"
+        c_mis = "mis"
+        c_par = "par " + c_run
+
+        lines = []
+
+        for lineno, line in enumerate(fr.source_token_lines(), start=1):
+            # Figure out how to mark this line.
+            line_class = []
+            annotate_html = ""
+            annotate_long = ""
+            if lineno in analysis.statements:
+                line_class.append("stm")
+            if lineno in analysis.excluded:
+                line_class.append(c_exc)
+            elif lineno in analysis.missing:
+                line_class.append(c_mis)
+            elif self.has_arcs and lineno in missing_branch_arcs:
+                line_class.append(c_par)
+                shorts = []
+                longs = []
+                for b in missing_branch_arcs[lineno]:
+                    if b < 0:
+                        shorts.append("exit")
+                    else:
+                        shorts.append(b)
+                    longs.append(fr.missing_arc_description(lineno, b, arcs_executed))
+                # 202F is NARROW NO-BREAK SPACE.
+                # 219B is RIGHTWARDS ARROW WITH STROKE.
+                short_fmt = "%s&#x202F;&#x219B;&#x202F;%s"
+                annotate_html = ",&nbsp;&nbsp; ".join(short_fmt % (lineno, d) for d in shorts)
+
+                if len(longs) == 1:
+                    annotate_long = longs[0]
+                else:
+                    annotate_long = "%d missed branches: %s" % (
+                        len(longs),
+                        ", ".join("%d) %s" % (num, ann_long)
+                            for num, ann_long in enumerate(longs, start=1)),
+                    )
+            elif lineno in analysis.statements:
+                line_class.append(c_run)
+
+            # Build the HTML for the line.
+            html = []
+            for tok_type, tok_text in line:
+                if tok_type == "ws":
+                    html.append(escape(tok_text))
+                else:
+                    tok_html = escape(tok_text) or '&nbsp;'
+                    html.append(
+                        '<span class="%s">%s</span>' % (tok_type, tok_html)
+                    )
+
+            lines.append({
+                'html': ''.join(html),
+                'number': lineno,
+                'class': ' '.join(line_class) or "pln",
+                'annotate': annotate_html,
+                'annotate_long': annotate_long,
+            })
+
+        # Write the HTML page for this file.
+        html = self.source_tmpl.render({
+            'c_exc': c_exc,
+            'c_mis': c_mis,
+            'c_par': c_par,
+            'c_run': c_run,
+            'has_arcs': self.has_arcs,
+            'extra_css': self.extra_css,
+            'fr': fr,
+            'nums': nums,
+            'lines': lines,
+            'time_stamp': self.time_stamp,
+        })
+
+        html_filename = rootname + ".html"
+        html_path = os.path.join(self.directory, html_filename)
+        write_html(html_path, html)
+
+        # Save this file's information for the index file.
+        index_info = {
+            'nums': nums,
+            'html_filename': html_filename,
+            'relative_filename': fr.relative_filename(),
+        }
+        self.files.append(index_info)
+        self.status.set_index_info(rootname, index_info)
+
+    def index_file(self):
+        """Write the index.html file for this report."""
+        index_tmpl = Templite(read_data("index.html"), self.template_globals)
+
+        self.totals = sum(f['nums'] for f in self.files)
+
+        html = index_tmpl.render({
+            'has_arcs': self.has_arcs,
+            'extra_css': self.extra_css,
+            'files': self.files,
+            'totals': self.totals,
+            'time_stamp': self.time_stamp,
+        })
+
+        write_html(os.path.join(self.directory, "index.html"), html)
+
+        # Write the latest hashes for next time.
+        self.status.write(self.directory)
+
+
+class HtmlStatus(object):
+    """The status information we keep to support incremental reporting."""
+
+    STATUS_FILE = "status.json"
+    STATUS_FORMAT = 1
+
+    #           pylint: disable=wrong-spelling-in-comment,useless-suppression
+    #  The data looks like:
+    #
+    #  {
+    #      'format': 1,
+    #      'settings': '540ee119c15d52a68a53fe6f0897346d',
+    #      'version': '4.0a1',
+    #      'files': {
+    #          'cogapp___init__': {
+    #              'hash': 'e45581a5b48f879f301c0f30bf77a50c',
+    #              'index': {
+    #                  'html_filename': 'cogapp___init__.html',
+    #                  'name': 'cogapp/__init__',
+    #                  'nums': <coverage.results.Numbers object at 0x10ab7ed0>,
+    #              }
+    #          },
+    #          ...
+    #          'cogapp_whiteutils': {
+    #              'hash': '8504bb427fc488c4176809ded0277d51',
+    #              'index': {
+    #                  'html_filename': 'cogapp_whiteutils.html',
+    #                  'name': 'cogapp/whiteutils',
+    #                  'nums': <coverage.results.Numbers object at 0x10ab7d90>,
+    #              }
+    #          },
+    #      },
+    #  }
+
+    def __init__(self):
+        self.reset()
+
+    def reset(self):
+        """Initialize to empty."""
+        self.settings = ''
+        self.files = {}
+
+    def read(self, directory):
+        """Read the last status in `directory`."""
+        usable = False
+        try:
+            status_file = os.path.join(directory, self.STATUS_FILE)
+            with open(status_file, "r") as fstatus:
+                status = json.load(fstatus)
+        except (IOError, ValueError):
+            usable = False
+        else:
+            usable = True
+            if status['format'] != self.STATUS_FORMAT:
+                usable = False
+            elif status['version'] != coverage.__version__:
+                usable = False
+
+        if usable:
+            self.files = {}
+            for filename, fileinfo in iitems(status['files']):
+                fileinfo['index']['nums'] = Numbers(*fileinfo['index']['nums'])
+                self.files[filename] = fileinfo
+            self.settings = status['settings']
+        else:
+            self.reset()
+
+    def write(self, directory):
+        """Write the current status to `directory`."""
+        status_file = os.path.join(directory, self.STATUS_FILE)
+        files = {}
+        for filename, fileinfo in iitems(self.files):
+            fileinfo['index']['nums'] = fileinfo['index']['nums'].init_args()
+            files[filename] = fileinfo
+
+        status = {
+            'format': self.STATUS_FORMAT,
+            'version': coverage.__version__,
+            'settings': self.settings,
+            'files': files,
+        }
+        with open(status_file, "w") as fout:
+            json.dump(status, fout)
+
+        # Older versions of ShiningPanda look for the old name, status.dat.
+        # Accomodate them if we are running under Jenkins.
+        # https://issues.jenkins-ci.org/browse/JENKINS-28428
+        if "JENKINS_URL" in os.environ:
+            with open(os.path.join(directory, "status.dat"), "w") as dat:
+                dat.write("https://issues.jenkins-ci.org/browse/JENKINS-28428\n")
+
+    def settings_hash(self):
+        """Get the hash of the coverage.py settings."""
+        return self.settings
+
+    def set_settings_hash(self, settings):
+        """Set the hash of the coverage.py settings."""
+        self.settings = settings
+
+    def file_hash(self, fname):
+        """Get the hash of `fname`'s contents."""
+        return self.files.get(fname, {}).get('hash', '')
+
+    def set_file_hash(self, fname, val):
+        """Set the hash of `fname`'s contents."""
+        self.files.setdefault(fname, {})['hash'] = val
+
+    def index_info(self, fname):
+        """Get the information for index.html for `fname`."""
+        return self.files.get(fname, {}).get('index', {})
+
+    def set_index_info(self, fname, info):
+        """Set the information for index.html for `fname`."""
+        self.files.setdefault(fname, {})['index'] = info
+
+
+# Helpers for templates and generating HTML
+
+def escape(t):
+    """HTML-escape the text in `t`.
+
+    This is only suitable for HTML text, not attributes.
+
+    """
+    # Convert HTML special chars into HTML entities.
+    return t.replace("&", "&amp;").replace("<", "&lt;")
+
+
+def pair(ratio):
+    """Format a pair of numbers so JavaScript can read them in an attribute."""
+    return "%s %s" % ratio

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