def script_for_document(scriptjson, project, pid):
"""
Modify the given script for a specific file.
"""
doc = project.get_storage().get(pid)
tree = script.Script(json.loads(scriptjson))
validate_batch_script(tree)
# get the input node and replace it with out path
binname = ".bin".join(os.path.splitext(doc.image_label))
recname = os.path.splitext(doc.image_label)[0] + ".html"
oldinput = tree.get_nodes_by_attr("stage", stages.INPUT)[0]
rec = tree.get_nodes_by_attr("stage", stages.RECOGNIZE)[0]
# assume the binary is the first input to the recogniser
bin = rec.input(0)
input = tree.new_node("storage.DocImageFileIn",
doc.image_label,
params=[("project", project.pk), ("pid", pid)])
recout = tree.add_node("storage.DocWriter",
recname,
params=[("project", project.pk), ("pid", pid),
("attribute", "transcript")])
binout = tree.add_node("storage.DocWriter",
binname,
params=[("project", project.pk), ("pid", pid),
("attribute", "binary")])
tree.replace_node(oldinput, input)
recout.set_input(0, rec)
binout.set_input(0, bin)
return json.dumps(tree.serialize(), indent=2)
def run_preset(request):
"""
Execute a script (sent as JSON).
"""
evalnode = request.POST.get("node", "")
jsondata = request.POST.get("script")
nodes = json.loads(jsondata)
tree = script.Script(nodes)
errors = tree.validate()
if errors:
return HttpResponse(json.dumps(dict(
status="VALIDATION",
errors=errors,
)), mimetype="application/json")
term = tree.get_node(evalnode)
if term is None:
terms = tree.get_terminals()
if not terms:
return HttpResponse(json.dumps(dict(
status="NOSCRIPT",
)), mimetype="application/json")
term = terms[0]
async = OcrTask.run_celery_task("run.script", (evalnode, nodes,
request.output_path, _cache_name(request)),
untracked=True, asyncronous=True, queue="interactive")
out = dict(
node=evalnode,
task_id=async.task_id,
status=async.status,
results=async.result
)
response = HttpResponse(mimetype="application/json")
json.dump(out, response, ensure_ascii=False)
return response
def run(nodelist, outpath):
s = script.Script(nodelist)
term = s.get_terminals()[0]
print "Rendering to %s" % outpath
os.environ["NODETREE_WRITE_FILEOUT"] = "1"
out = s.add_node("util.FileOut", "Output",
params=[("path", os.path.abspath(outpath))])
out.set_input(0, term)
out.eval()
def validate_preset(self, data):
this = json.loads(self.data)
tree = script.Script(data)
errors = []
for name, preds in this.iteritems():
for pred in preds:
perrors = self.validate_predicate(name, pred, tree)
if perrors:
errors.extend(perrors)
return errors
def test_invalid_scripts(self):
"""
Test supposedly invalid script DO raise errors.
"""
for name, nodes in self.invalidscripts.iteritems():
if not name.startswith("invalid"):
continue
s = script.Script(nodes)
terms = s.get_terminals()
self.assertTrue(len(terms) > 0, msg="No terminal nodes found.")
# check we get an expected type from evaling the nodes
for n in terms:
self.assertRaises(exceptions.ValidationError, n.eval)
def clear_node_cache(request):
"""
Clear the preset cache for a single node.
"""
evalnode = request.POST.get("node")
jsondata = request.POST.get("script")
nodes = json.loads(jsondata)
tree = script.Script(nodes)
node = tree.get_node(evalnode)
cacheclass = pluginutils.get_dzi_cacher(settings)
cacher = cacheclass(
path=os.path.join(settings.MEDIA_ROOT, settings.TEMP_PATH),
key=_cache_name(request))
cacher.clear_cache(node)
return HttpResponse(json.dumps({"ok": True}),
mimetype="application/json")
def run(self, project_pk, pid, scriptjson):
"""
Runs the convert action.
"""
project = Project.objects.get(pk=project_pk)
storage = project.get_storage()
doc = storage.get(pid)
logger = self.get_logger()
logger.debug("Running Document Batch Item: %s")
# try and delete the existing binary dzi file
dzipath = storage.document_attr_dzi_path(doc, "binary")
dzifiles = os.path.splitext(dzipath)[0] + "_files"
try:
os.unlink(dzipath)
shutil.rmtree(dzifiles)
except OSError:
pass
progress_handler = get_progress_callback(self.request.id)
abort_handler = get_abort_callback(self.request.id)
progress_handler(0)
tree = script.Script(json.loads(scriptjson),
nodekwargs=dict(logger=logger,
abort_func=abort_handler,
progress_func=progress_handler))
logger.debug("Running tree: %s", json.dumps(tree.serialize(),
indent=2))
try:
# write out the binary... this should cache it's input
os.environ["NODETREE_WRITE_FILEOUT"] = "1"
doc.script_content = json.dumps(tree.serialize(), indent=2)
doc.script_label = "%s.json" % os.path.splitext(doc.label)[0]
doc.script_mimetype = "application/json"
# set document metadata to indicate it's an OCR "draft"
doc.ocr_status = status.RUNNING
doc.save()
# process the nodes
[t.eval() for t in tree.get_terminals()]
except Exception, err:
logger.exception("Unhandled exception: %s", err)
# set document metadata to indicate it's an OCR "draft"
doc.ocr_status = status.ERROR
def test_valid_scripts(self):
"""
Test the supposedly valid script don't raise errors.
"""
for name, nodes in self.validscripts.iteritems():
if name.startswith("invalid"):
continue
s = script.Script(nodes)
terms = s.get_terminals()
self.assertTrue(len(terms) > 0, msg="No terminal nodes found.")
# check we get an expected type from evaling the nodes
for n in terms:
out = n.eval()
self.assertIn(type(out), (unicode, dict, list, numpy.ndarray),
msg="Unexpected output type for node %s: %s" %
(n.name, type(out)))
def script_for_page_file(scriptjson, filepath, writepath):
"""
Modify the given script for a specific file.
"""
tree = script.Script(json.loads(scriptjson))
validate_batch_script(tree)
# get the input node and replace it with out path
input = tree.get_nodes_by_attr("stage", stages.INPUT)[0]
input.set_param("path", filepath)
# attach a fileout node to the binary input of the recognizer and
# save it as a binary file
rec = tree.get_nodes_by_attr("stage", stages.RECOGNIZE)[0]
outpath = ocrutils.get_binary_path(filepath, writepath)
outbin = tree.add_node("util.FileOut",
"OutputBinary",
params=[("path", os.path.abspath(outpath).encode()),
("create_dir", True)])
outbin.set_input(0, rec.input(0))
return json.dumps(tree.serialize(), indent=2)
def run(self, evalnode, nodelist, writepath, cachedir):
"""
Runs the convert action.
"""
logger = self.get_logger()
cacheclass = pluginutils.get_dzi_cacher(settings)
cacher = cacheclass(path=os.path.join(settings.MEDIA_ROOT,
settings.TEMP_PATH),
key=cachedir,
logger=logger)
logger.debug("Using cacher: %s, Bases %s", cacher,
cacheclass.__bases__)
try:
tree = script.Script(nodelist,
nodekwargs=dict(logger=logger, cacher=cacher))
term = tree.get_node(evalnode)
if term is None:
term = tree.get_terminals()[0]
result = term.eval()
except exceptions.NodeError, err:
logger.error("Node Error (%s): %s", err.node, err.message)
return dict(type="error", node=err.node.label, error=err.message)
def handle(self, *args, **options):
if len(args) != 3:
raise CommandError("Usage: %s" % self.help)
scriptfile, infile, outfile = args
try:
with open(scriptfile, "r") as f:
nodes = json.load(f)
except Exception:
raise CommandError("Invalid script file: %s" % scriptfile)
if nodes is None:
raise CommandError("No nodes found in script: %s" % scriptfile)
s = script.Script(nodes)
input = s.get_nodes_by_attr("stage", stages.INPUT)[0]
input.set_param("path", infile)
term = s.get_terminals()[0]
sys.stderr.write("Rendering to %s\n" % outfile)
os.environ["NODETREE_WRITE_FILEOUT"] = "1"
out = s.add_node("util.FileOut", "Output",
params=[("path", os.path.abspath(outfile))])
out.set_input(0, term)
out.eval()
def run_preset(cls, preset, handle):
"""Run a preset on the given handle."""
s = script.Script(json.loads(preset.data))
s = cls._set_script_input(s, handle)
term = s.get_terminals()[0]
return term.eval()
