Python matplotlib.checkdep_ghostscript() Examples

The following are 26 code examples of matplotlib.checkdep_ghostscript(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module matplotlib , or try the search function .
Example #1
Source File: compare.py    From twitter-stock-recommendation with MIT License 6 votes vote down vote up 
def _update_converter():
    gs, gs_v = matplotlib.checkdep_ghostscript()
    if gs_v is not None:
        def cmd(old, new):
            return [str(gs), '-q', '-sDEVICE=png16m', '-dNOPAUSE', '-dBATCH',
             '-sOutputFile=' + new, old]
        converter['pdf'] = make_external_conversion_command(cmd)
        converter['eps'] = make_external_conversion_command(cmd)

    if matplotlib.checkdep_inkscape() is not None:
        converter['svg'] = _SVGConverter()


#: A dictionary that maps filename extensions to functions which
#: themselves map arguments `old` and `new` (filenames) to a list of strings.
#: The list can then be passed to Popen to convert files with that
#: extension to png format.
Example #2
Source File: compare.py    From twitter-stock-recommendation with MIT License 6 votes vote down vote up 
def get_file_hash(path, block_size=2 ** 20):
    md5 = hashlib.md5()
    with open(path, 'rb') as fd:
        while True:
            data = fd.read(block_size)
            if not data:
                break
            md5.update(data)

    if path.endswith('.pdf'):
        from matplotlib import checkdep_ghostscript
        md5.update(checkdep_ghostscript()[1].encode('utf-8'))
    elif path.endswith('.svg'):
        from matplotlib import checkdep_inkscape
        md5.update(checkdep_inkscape().encode('utf-8'))

    return md5.hexdigest()
Example #3
Source File: compare.py    From neural-network-animation with MIT License 6 votes vote down vote up 
def _update_converter():
    gs, gs_v = matplotlib.checkdep_ghostscript()
    if gs_v is not None:
        cmd = lambda old, new: \
            [gs, '-q', '-sDEVICE=png16m', '-dNOPAUSE', '-dBATCH',
             '-sOutputFile=' + new, old]
        converter['pdf'] = make_external_conversion_command(cmd)
        converter['eps'] = make_external_conversion_command(cmd)

    if matplotlib.checkdep_inkscape() is not None:
        cmd = lambda old, new: \
            ['inkscape', '-z', old, '--export-png', new]
        converter['svg'] = make_external_conversion_command(cmd)


#: A dictionary that maps filename extensions to functions which
#: themselves map arguments `old` and `new` (filenames) to a list of strings.
#: The list can then be passed to Popen to convert files with that
#: extension to png format.
Example #4
Source File: compare.py    From GraphicDesignPatternByPython with MIT License 6 votes vote down vote up 
def get_file_hash(path, block_size=2 ** 20):
    md5 = hashlib.md5()
    with open(path, 'rb') as fd:
        while True:
            data = fd.read(block_size)
            if not data:
                break
            md5.update(data)

    if path.endswith('.pdf'):
        from matplotlib import checkdep_ghostscript
        md5.update(checkdep_ghostscript()[1].encode('utf-8'))
    elif path.endswith('.svg'):
        from matplotlib import checkdep_inkscape
        md5.update(checkdep_inkscape().encode('utf-8'))

    return md5.hexdigest()
Example #5
Source File: compare.py    From coffeegrindsize with MIT License 6 votes vote down vote up 
def get_file_hash(path, block_size=2 ** 20):
    md5 = hashlib.md5()
    with open(path, 'rb') as fd:
        while True:
            data = fd.read(block_size)
            if not data:
                break
            md5.update(data)

    if path.endswith('.pdf'):
        from matplotlib import checkdep_ghostscript
        md5.update(checkdep_ghostscript()[1].encode('utf-8'))
    elif path.endswith('.svg'):
        from matplotlib import checkdep_inkscape
        md5.update(checkdep_inkscape().encode('utf-8'))

    return md5.hexdigest()
Example #6
Source File: compare.py    From python3_ios with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
def get_file_hash(path, block_size=2 ** 20):
    md5 = hashlib.md5()
    with open(path, 'rb') as fd:
        while True:
            data = fd.read(block_size)
            if not data:
                break
            md5.update(data)

    if path.endswith('.pdf'):
        from matplotlib import checkdep_ghostscript
        md5.update(checkdep_ghostscript()[1].encode('utf-8'))
    elif path.endswith('.svg'):
        from matplotlib import checkdep_inkscape
        md5.update(checkdep_inkscape().encode('utf-8'))

    return md5.hexdigest()
Example #7
Source File: compare.py    From python3_ios with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def __call__(self, orig, dest):
        if not self._proc:
            self._stdout = TemporaryFile()
            self._proc = subprocess.Popen(
                [matplotlib.checkdep_ghostscript.executable,
                 "-dNOPAUSE", "-sDEVICE=png16m"],
                # As far as I can see, ghostscript never outputs to stderr.
                stdin=subprocess.PIPE, stdout=subprocess.PIPE)
            try:
                self._read_until(b"\nGS")
            except _ConverterError:
                raise OSError("Failed to start Ghostscript")

        def encode_and_escape(name):
            return (os.fsencode(name)
                    .replace(b"\\", b"\\\\")
                    .replace(b"(", br"\(")
                    .replace(b")", br"\)"))

        self._proc.stdin.write(
            b"<< /OutputFile ("
            + encode_and_escape(dest)
            + b") >> setpagedevice ("
            + encode_and_escape(orig)
            + b") run flush\n")
        self._proc.stdin.flush()
        # GS> if nothing left on the stack; GS<n> if n items left on the stack.
        err = self._read_until(b"GS")
        stack = self._read_until(b">")
        if stack or not os.path.exists(dest):
            stack_size = int(stack[1:]) if stack else 0
            self._proc.stdin.write(b"pop\n" * stack_size)
            # Using the systemencoding should at least get the filenames right.
            raise ImageComparisonFailure(
                (err + b"GS" + stack + b">")
                .decode(sys.getfilesystemencoding(), "replace"))
Example #8
Source File: backend_pgf.py    From twitter-stock-recommendation with MIT License 5 votes vote down vote up 
def make_pdf_to_png_converter():
    """
    Returns a function that converts a pdf file to a png file.
    """

    tools_available = []
    # check for pdftocairo
    try:
        check_output([str("pdftocairo"), "-v"], stderr=subprocess.STDOUT)
        tools_available.append("pdftocairo")
    except:
        pass
    # check for ghostscript
    gs, ver = mpl.checkdep_ghostscript()
    if gs:
        tools_available.append("gs")

    # pick converter
    if "pdftocairo" in tools_available:
        def cairo_convert(pdffile, pngfile, dpi):
            cmd = [str("pdftocairo"), "-singlefile", "-png", "-r", "%d" % dpi,
                   pdffile, os.path.splitext(pngfile)[0]]
            check_output(cmd, stderr=subprocess.STDOUT)
        return cairo_convert
    elif "gs" in tools_available:
        def gs_convert(pdffile, pngfile, dpi):
            cmd = [str(gs),
                   '-dQUIET', '-dSAFER', '-dBATCH', '-dNOPAUSE', '-dNOPROMPT',
                   '-dUseCIEColor', '-dTextAlphaBits=4',
                   '-dGraphicsAlphaBits=4', '-dDOINTERPOLATE',
                   '-sDEVICE=png16m', '-sOutputFile=%s' % pngfile,
                   '-r%d' % dpi, pdffile]
            check_output(cmd, stderr=subprocess.STDOUT)
        return gs_convert
    else:
        raise RuntimeError("No suitable pdf to png renderer found.")
Example #9
Source File: backend_ps.py    From twitter-stock-recommendation with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        executable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = str(gs_exe)
        return str(gs_exe)
Example #10
Source File: compare.py    From coffeegrindsize with MIT License 5 votes vote down vote up 
def _update_converter():
    gs, gs_v = matplotlib.checkdep_ghostscript()
    if gs_v is not None:
        converter['pdf'] = converter['eps'] = _GSConverter()
    if matplotlib.checkdep_inkscape() is not None:
        converter['svg'] = _SVGConverter()


#: A dictionary that maps filename extensions to functions which
#: themselves map arguments `old` and `new` (filenames) to a list of strings.
#: The list can then be passed to Popen to convert files with that
#: extension to png format.
Example #11
Source File: compare.py    From coffeegrindsize with MIT License 5 votes vote down vote up 
def __call__(self, orig, dest):
        if not self._proc:
            self._stdout = TemporaryFile()
            self._proc = subprocess.Popen(
                [matplotlib.checkdep_ghostscript.executable,
                 "-dNOPAUSE", "-sDEVICE=png16m"],
                # As far as I can see, ghostscript never outputs to stderr.
                stdin=subprocess.PIPE, stdout=subprocess.PIPE)
            try:
                self._read_until(b"\nGS")
            except _ConverterError:
                raise OSError("Failed to start Ghostscript")

        def encode_and_escape(name):
            return (os.fsencode(name)
                    .replace(b"\\", b"\\\\")
                    .replace(b"(", br"\(")
                    .replace(b")", br"\)"))

        self._proc.stdin.write(
            b"<< /OutputFile ("
            + encode_and_escape(dest)
            + b") >> setpagedevice ("
            + encode_and_escape(orig)
            + b") run flush\n")
        self._proc.stdin.flush()
        # GS> if nothing left on the stack; GS<n> if n items left on the stack.
        err = self._read_until(b"GS")
        stack = self._read_until(b">")
        if stack or not os.path.exists(dest):
            stack_size = int(stack[1:]) if stack else 0
            self._proc.stdin.write(b"pop\n" * stack_size)
            # Using the systemencoding should at least get the filenames right.
            raise ImageComparisonFailure(
                (err + b"GS" + stack + b">")
                .decode(sys.getfilesystemencoding(), "replace"))
Example #12
Source File: backend_pgf.py    From coffeegrindsize with MIT License 5 votes vote down vote up 
def make_pdf_to_png_converter():
    """
    Returns a function that converts a pdf file to a png file.
    """

    tools_available = []
    # check for pdftocairo
    try:
        subprocess.check_output(["pdftocairo", "-v"], stderr=subprocess.STDOUT)
        tools_available.append("pdftocairo")
    except OSError:
        pass
    # check for ghostscript
    gs, ver = mpl.checkdep_ghostscript()
    if gs:
        tools_available.append("gs")

    # pick converter
    if "pdftocairo" in tools_available:
        def cairo_convert(pdffile, pngfile, dpi):
            cmd = ["pdftocairo", "-singlefile", "-png", "-r", "%d" % dpi,
                   pdffile, os.path.splitext(pngfile)[0]]
            subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        return cairo_convert
    elif "gs" in tools_available:
        def gs_convert(pdffile, pngfile, dpi):
            cmd = [gs,
                   '-dQUIET', '-dSAFER', '-dBATCH', '-dNOPAUSE', '-dNOPROMPT',
                   '-dUseCIEColor', '-dTextAlphaBits=4',
                   '-dGraphicsAlphaBits=4', '-dDOINTERPOLATE',
                   '-sDEVICE=png16m', '-sOutputFile=%s' % pngfile,
                   '-r%d' % dpi, pdffile]
            subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        return gs_convert
    else:
        raise RuntimeError("No suitable pdf to png renderer found.")
Example #13
Source File: backend_ps.py    From coffeegrindsize with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        executable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = str(gs_exe)
        return str(gs_exe)
Example #14
Source File: backend_pgf.py    From ImageFusion with MIT License 5 votes vote down vote up 
def make_pdf_to_png_converter():
    """
    Returns a function that converts a pdf file to a png file.
    """

    tools_available = []
    # check for pdftocairo
    try:
        check_output(["pdftocairo", "-v"], stderr=subprocess.STDOUT)
        tools_available.append("pdftocairo")
    except:
        pass
    # check for ghostscript
    gs, ver = mpl.checkdep_ghostscript()
    if gs:
        tools_available.append("gs")

    # pick converter
    if "pdftocairo" in tools_available:
        def cairo_convert(pdffile, pngfile, dpi):
            cmd = ["pdftocairo", "-singlefile", "-png",
                   "-r %d" % dpi, pdffile, os.path.splitext(pngfile)[0]]
            # for some reason this doesn't work without shell
            check_output(" ".join(cmd), shell=True, stderr=subprocess.STDOUT)
        return cairo_convert
    elif "gs" in tools_available:
        def gs_convert(pdffile, pngfile, dpi):
            cmd = [gs, '-dQUIET', '-dSAFER', '-dBATCH', '-dNOPAUSE', '-dNOPROMPT',
                   '-sDEVICE=png16m', '-dUseCIEColor', '-dTextAlphaBits=4',
                   '-dGraphicsAlphaBits=4', '-dDOINTERPOLATE', '-sOutputFile=%s' % pngfile,
                   '-r%d' % dpi, pdffile]
            check_output(cmd, stderr=subprocess.STDOUT)
        return gs_convert
    else:
        raise RuntimeError("No suitable pdf to png renderer found.")
Example #15
Source File: backend_ps.py    From ImageFusion with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        excutable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = gs_exe
        return gs_exe
Example #16
Source File: compare.py    From python3_ios with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def _update_converter():
    gs, gs_v = matplotlib.checkdep_ghostscript()
    if gs_v is not None:
        converter['pdf'] = converter['eps'] = _GSConverter()
    if matplotlib.checkdep_inkscape() is not None:
        converter['svg'] = _SVGConverter()


#: A dictionary that maps filename extensions to functions which
#: themselves map arguments `old` and `new` (filenames) to a list of strings.
#: The list can then be passed to Popen to convert files with that
#: extension to png format.
Example #17
Source File: backend_ps.py    From Computable with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        excutable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = gs_exe
        return gs_exe
Example #18
Source File: backend_pgf.py    From python3_ios with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def make_pdf_to_png_converter():
    """
    Returns a function that converts a pdf file to a png file.
    """

    tools_available = []
    # check for pdftocairo
    try:
        subprocess.check_output(["pdftocairo", "-v"], stderr=subprocess.STDOUT)
        tools_available.append("pdftocairo")
    except OSError:
        pass
    # check for ghostscript
    gs, ver = mpl.checkdep_ghostscript()
    if gs:
        tools_available.append("gs")

    # pick converter
    if "pdftocairo" in tools_available:
        def cairo_convert(pdffile, pngfile, dpi):
            cmd = ["pdftocairo", "-singlefile", "-png", "-r", "%d" % dpi,
                   pdffile, os.path.splitext(pngfile)[0]]
            subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        return cairo_convert
    elif "gs" in tools_available:
        def gs_convert(pdffile, pngfile, dpi):
            cmd = [gs,
                   '-dQUIET', '-dSAFER', '-dBATCH', '-dNOPAUSE', '-dNOPROMPT',
                   '-dUseCIEColor', '-dTextAlphaBits=4',
                   '-dGraphicsAlphaBits=4', '-dDOINTERPOLATE',
                   '-sDEVICE=png16m', '-sOutputFile=%s' % pngfile,
                   '-r%d' % dpi, pdffile]
            subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        return gs_convert
    else:
        raise RuntimeError("No suitable pdf to png renderer found.")
Example #19
Source File: backend_ps.py    From python3_ios with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def gs_exe(self):
        """
        executable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = str(gs_exe)
        return str(gs_exe)
Example #20
Source File: compare.py    From GraphicDesignPatternByPython with MIT License 5 votes vote down vote up 
def _update_converter():
    gs, gs_v = matplotlib.checkdep_ghostscript()
    if gs_v is not None:
        converter['pdf'] = converter['eps'] = _GSConverter()
    if matplotlib.checkdep_inkscape() is not None:
        converter['svg'] = _SVGConverter()


#: A dictionary that maps filename extensions to functions which
#: themselves map arguments `old` and `new` (filenames) to a list of strings.
#: The list can then be passed to Popen to convert files with that
#: extension to png format.
Example #21
Source File: compare.py    From GraphicDesignPatternByPython with MIT License 5 votes vote down vote up 
def __call__(self, orig, dest):
        if not self._proc:
            self._stdout = TemporaryFile()
            self._proc = subprocess.Popen(
                [matplotlib.checkdep_ghostscript.executable,
                 "-dNOPAUSE", "-sDEVICE=png16m"],
                # As far as I can see, ghostscript never outputs to stderr.
                stdin=subprocess.PIPE, stdout=subprocess.PIPE)
            try:
                self._read_until(b"\nGS")
            except _ConverterError:
                raise OSError("Failed to start Ghostscript")

        def encode_and_escape(name):
            return (os.fsencode(name)
                    .replace(b"\\", b"\\\\")
                    .replace(b"(", br"\(")
                    .replace(b")", br"\)"))

        self._proc.stdin.write(
            b"<< /OutputFile ("
            + encode_and_escape(dest)
            + b") >> setpagedevice ("
            + encode_and_escape(orig)
            + b") run flush\n")
        self._proc.stdin.flush()
        # GS> if nothing left on the stack; GS<n> if n items left on the stack.
        err = self._read_until(b"GS")
        stack = self._read_until(b">")
        if stack or not os.path.exists(dest):
            stack_size = int(stack[1:]) if stack else 0
            self._proc.stdin.write(b"pop\n" * stack_size)
            # Using the systemencoding should at least get the filenames right.
            raise ImageComparisonFailure(
                (err + b"GS" + stack + b">")
                .decode(sys.getfilesystemencoding(), "replace"))
Example #22
Source File: backend_pgf.py    From GraphicDesignPatternByPython with MIT License 5 votes vote down vote up 
def make_pdf_to_png_converter():
    """
    Returns a function that converts a pdf file to a png file.
    """

    tools_available = []
    # check for pdftocairo
    try:
        subprocess.check_output(["pdftocairo", "-v"], stderr=subprocess.STDOUT)
        tools_available.append("pdftocairo")
    except OSError:
        pass
    # check for ghostscript
    gs, ver = mpl.checkdep_ghostscript()
    if gs:
        tools_available.append("gs")

    # pick converter
    if "pdftocairo" in tools_available:
        def cairo_convert(pdffile, pngfile, dpi):
            cmd = ["pdftocairo", "-singlefile", "-png", "-r", "%d" % dpi,
                   pdffile, os.path.splitext(pngfile)[0]]
            subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        return cairo_convert
    elif "gs" in tools_available:
        def gs_convert(pdffile, pngfile, dpi):
            cmd = [gs,
                   '-dQUIET', '-dSAFER', '-dBATCH', '-dNOPAUSE', '-dNOPROMPT',
                   '-dUseCIEColor', '-dTextAlphaBits=4',
                   '-dGraphicsAlphaBits=4', '-dDOINTERPOLATE',
                   '-sDEVICE=png16m', '-sOutputFile=%s' % pngfile,
                   '-r%d' % dpi, pdffile]
            subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        return gs_convert
    else:
        raise RuntimeError("No suitable pdf to png renderer found.")
Example #23
Source File: backend_ps.py    From GraphicDesignPatternByPython with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        executable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = str(gs_exe)
        return str(gs_exe)
Example #24
Source File: backend_pgf.py    From neural-network-animation with MIT License 5 votes vote down vote up 
def make_pdf_to_png_converter():
    """
    Returns a function that converts a pdf file to a png file.
    """

    tools_available = []
    # check for pdftocairo
    try:
        check_output(["pdftocairo", "-v"], stderr=subprocess.STDOUT)
        tools_available.append("pdftocairo")
    except:
        pass
    # check for ghostscript
    gs, ver = mpl.checkdep_ghostscript()
    if gs:
        tools_available.append("gs")

    # pick converter
    if "pdftocairo" in tools_available:
        def cairo_convert(pdffile, pngfile, dpi):
            cmd = ["pdftocairo", "-singlefile", "-png",
                   "-r %d" % dpi, pdffile, os.path.splitext(pngfile)[0]]
            # for some reason this doesn't work without shell
            check_output(" ".join(cmd), shell=True, stderr=subprocess.STDOUT)
        return cairo_convert
    elif "gs" in tools_available:
        def gs_convert(pdffile, pngfile, dpi):
            cmd = [gs, '-dQUIET', '-dSAFER', '-dBATCH', '-dNOPAUSE', '-dNOPROMPT',
                   '-sDEVICE=png16m', '-dUseCIEColor', '-dTextAlphaBits=4',
                   '-dGraphicsAlphaBits=4', '-dDOINTERPOLATE', '-sOutputFile=%s' % pngfile,
                   '-r%d' % dpi, pdffile]
            check_output(cmd, stderr=subprocess.STDOUT)
        return gs_convert
    else:
        raise RuntimeError("No suitable pdf to png renderer found.")
Example #25
Source File: backend_ps.py    From neural-network-animation with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        excutable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = gs_exe
        return gs_exe
Example #26
Source File: backend_ps.py    From matplotlib-4-abaqus with MIT License 5 votes vote down vote up 
def gs_exe(self):
        """
        excutable name of ghostscript.
        """
        try:
            return self._cached["gs_exe"]
        except KeyError:
            pass

        gs_exe, gs_version = checkdep_ghostscript()
        if gs_exe is None:
            gs_exe = 'gs'

        self._cached["gs_exe"] = gs_exe
        return gs_exe