def graph(expr, image_format='pdf', layout='dot'):
r'''Graphs `expr` with graphviz and opens resulting image in
the default image viewer.
::
>>> rtm_syntax = '(3 ((2 (2 1)) 2))'
>>> rhythm_tree = rhythmtreetools.RhythmTreeParser()(rtm_syntax)[0]
>>> print rhythm_tree.pretty_rtm_format
(3 (
(2 (
2
1))
2))
::
>>> iotools.graph(rhythm_tree) # doctest: +SKIP
Returns none.
'''
from abjad import abjad_configuration
from abjad.tools import iotools
assert image_format in ('pdf', 'png')
layouts =('circo', 'dot', 'fdp', 'neato', 'osage', 'sfdp', 'twopi')
assert layout in layouts
message = 'Cannot find `{}` command-line tool.'.format(layout)
message += ' Please download Graphviz from graphviz.org.'
assert iotools.which(layout), message
if isinstance(expr, str):
graphviz_format = expr
else:
graphviz_format = expr.graphviz_format
current_directory = os.path.abspath('.')
ABJADOUTPUT = abjad_configuration['abjad_output']
iotools.verify_output_directory(ABJADOUTPUT)
dot_path = os.path.join(
ABJADOUTPUT,
iotools.get_next_output_file_name(file_extension='dot'),
)
img_path = os.path.join(ABJADOUTPUT, dot_path.replace('dot', 'pdf'))
with open(dot_path, 'w') as f:
f.write(graphviz_format)
command = '{} -v -T{} {} -o {}'
command = command.format(layout, image_format, dot_path, img_path)
subprocess.call(command, shell=True)
pdf_viewer = abjad_configuration['pdf_viewer']
ABJADOUTPUT = abjad_configuration['abjad_output']
iotools.open_file(img_path, pdf_viewer)
def plot(expr, image_format='png', width=640, height=320):
r'''Plots `expr` with gnuplot and opens resulting image in
the default image viewer.
Returns none.
'''
from abjad import abjad_configuration
from abjad.tools import iotools
assert image_format in ('pdf', 'png')
assert isinstance(width, int) and 0 < width
assert isinstance(height, int) and 0 < height
message = 'Cannot find `gnuplot` command-line tool.'
assert iotools.which('gnuplot'), message
gnuplot_format = expr.gnuplot_format
current_directory = os.path.abspath('.')
abjad_output = abjad_configuration['abjad_output']
iotools.verify_output_directory(abjad_output)
txt_path = os.path.join(
abjad_output, iotools.get_next_output_file_name(file_extension='txt'))
img_path = os.path.join(abjad_output, txt_path.replace('txt', image_format))
if image_format == 'png':
image_format = 'pngcairo'
gnuplot_format = gnuplot_format.format(
filename=img_path,
image_format=image_format,
height=height,
width=width
)
with open(txt_path, 'w') as f:
f.write(gnuplot_format)
command = 'gnuplot {}'.format(txt_path)
subprocess.call(command, shell=True)
pdf_viewer = abjad_configuration['pdf_viewer']
abjad_output = abjad_configuration['abjad_output']
iotools.open_file(img_path, pdf_viewer)
def play(expr):
r'''Plays `expr`.
::
>>> note = Note("c'4")
::
>>> iotools.play(note) # doctest: +SKIP
This input creates and opens a one-note MIDI file.
Abjad outputs MIDI files of the format ``filename.mid``
under Windows.
Abjad outputs MIDI files of the format ``filename.midi``
under other operating systems.
Returns none.
'''
from abjad import abjad_configuration
from abjad.tools import iotools
ABJADOUTPUT = abjad_configuration['abjad_output']
iotools.verify_output_directory(ABJADOUTPUT)
os.chdir(ABJADOUTPUT)
name = iotools.get_next_output_file_name()
outfile = open(name, 'w')
lilypond_file = iotools.insert_expr_into_lilypond_file(expr)
lilypond_file.score_block.append(lilypondfiletools.MIDIBlock())
outfile.write(lilypond_file.lilypond_format)
outfile.close()
iotools.run_lilypond(name, abjad_configuration['lilypond_path'])
if os.name == 'nt':
extension = 'mid'
else:
extension = 'midi'
midi_player = abjad_configuration['midi_player']
iotools.open_file('%s.%s' % (name[:-3], extension), midi_player)
def redo(target=-1, lily_time=10):
r"""Rerenders the last ``.ly`` file created in Abjad and
then shows the resulting PDF.
.. container:: example
**Example 1.** Redo the last LilyPond file created in Ajbad:
::
>>> iotools.redo() # doctest: +SKIP
.. container:: example
**Examle 2.** Redo the next-to-last LilyPond file created in Abjad:
::
>>> iotools.redo(-2) # doctest: +SKIP
Returns none.
"""
from abjad import abjad_configuration
from abjad.tools import iotools
current_directory = os.path.abspath(".")
abjad_output = abjad_configuration["abjad_output"]
iotools.verify_output_directory(abjad_output)
os.chdir(abjad_output)
# TODO: Encapsulate as a single function called cfg._find_target()
# find target
if isinstance(target, int) and target < 0:
last_lilypond = iotools.get_last_output_file_name()
if last_lilypond:
last_number = last_lilypond.replace(".ly", "")
last_number = last_lilypond.replace(".pdf", "")
last_number = last_number.replace(".midi", "")
last_number = last_number.replace(".mid", "")
target_number = int(last_number) + (target + 1)
target_str = "%04d" % target_number
target_ly = os.path.join(abjad_output, target_str + ".ly")
else:
print "Target LilyPond input file does not exist."
elif isinstance(target, int) and 0 <= target:
target_str = "%04d" % target
target_ly = os.path.join(abjad_output, target_str + ".ly")
elif isinstance(target, str):
target_ly = os.path.join(abjad_output, target)
else:
message = "can not get target LilyPond input from {}.".format(target)
raise ValueError(message)
# render
start_time = time.time()
iotools.run_lilypond(target_ly, abjad_configuration["lilypond_path"])
stop_time = time.time()
actual_lily_time = int(stop_time - start_time)
os.chdir(current_directory)
if lily_time <= actual_lily_time:
message = "LilyPond processing time equal to {} seconds ..."
print message.format(actual_lily_time)
# TODO: Encapsulate as cfg._open_pdf()
# open pdf
pdf_viewer = abjad_configuration["pdf_viewer"]
abjad_output = abjad_configuration["abjad_output"]
name = target_ly
iotools.open_file("%s.pdf" % name[:-3], pdf_viewer)
