"""
API to ``mets:file``
"""
from os.path import splitext, basename
from pathlib import Path
from ocrd_utils import deprecation_warning
from .ocrd_xml_base import ET
from .constants import NAMESPACES as NS, TAG_METS_FLOCAT, TAG_METS_FILE
[docs]class OcrdFile():
"""
Represents a single ``mets:file/mets:FLocat`` (METS file entry).
"""
def __init__(self, el, mimetype=None, pageId=None, local_filename=None, mets=None, url=None, ID=None, loctype=None):
"""
Args:
el (LxmlElement): etree Element of the ``mets:file`` this represents. Create new if not provided
Keyword Args:
mets (OcrdMets): Containing :py:class:`ocrd_models.ocrd_mets.OcrdMets`.
mimetype (string): ``@MIMETYPE`` of this ``mets:file``
pageId (string): ``@ID`` of the physical ``mets:structMap`` entry corresponding to this ``mets:file``
local_filename (string): Local filename
url (string): original ``@xlink:href`` of this ``mets:file``
local_filename (Path): ``@xlink:href`` pointing to the locally cached version of the file in the workspace
ID (string): ``@ID`` of this ``mets:file``
loctype (string): DEPRECATED do not use
"""
if el is None:
raise ValueError("Must provide mets:file element this OcrdFile represents")
if loctype:
deprecation_warning("'loctype' is not supported in OcrdFile anymore, use 'url' or 'local_filename'")
self._el = el
self.mets = mets
self.ID = ID
self.mimetype = mimetype
self.pageId = pageId
if local_filename:
self.local_filename = Path(local_filename)
if url:
self.url = url
def __str__(self):
"""
String representation of this ``mets:file``.
"""
# props = '\n\t'.join([
# ' : '.join([k, getattr(self, k) if getattr(self, k) else '---'])
# for k in ['mimetype', 'ID', 'url', 'local_filename']
# ])
# return 'OcrdFile[' + '\n\t' + props + '\n\t]'
props = ', '.join([
'='.join([k, str(getattr(self, k)) if getattr(self, k) else '---'])
for k in ['ID', 'mimetype', 'url', 'local_filename']
])
try:
fileGrp = self.fileGrp
except ValueError:
fileGrp = '---'
return '<OcrdFile fileGrp=%s %s]/> ' % (fileGrp, props)
def __eq__(self, other):
return self.ID == other.ID \
and self.url == other.url \
and self.local_filename == other.local_filename
# EXT_TO_MIME[MIME_TO_EXT[self.mimetype]] == EXT_TO_MIME[MIME_TO_EXT[other.mimetype]] and \
# self.fileGrp == other.fileGrp
@property
def basename(self):
"""
Get the ``.name`` of the local file
"""
if not self.local_filename:
return
return self.local_filename.name
@property
def extension(self):
if not self.local_filename:
return
return ''.join(self.local_filename.suffixes)
@property
def basename_without_extension(self):
"""
Get the ``os.path.basename`` of the local file, if any, with extension removed.
"""
if not self.local_filename:
return
return self.local_filename.name[:-len(self.extension)]
@property
def ID(self):
"""
Get the ``@ID`` of the ``mets:file``.
"""
return self._el.get('ID')
@ID.setter
def ID(self, ID):
"""
Set the ``@ID`` of the ``mets:file`` to :py:attr:`ID`.
"""
if ID is None:
return
if self.mets is None:
raise Exception("OcrdFile %s has no member 'mets' pointing to parent OcrdMets" % self)
old_id = self.ID
self._el.set('ID', ID)
# also update the references in the physical structmap
for pageId in self.mets.remove_physical_page_fptr(fileId=old_id):
self.pageId = pageId
@property
def pageId(self):
"""
Get the ``@ID`` of the physical ``mets:structMap`` entry corresponding to this ``mets:file`` (physical page manifestation).
"""
if self.mets is None:
raise Exception("OcrdFile %s has no member 'mets' pointing to parent OcrdMets" % self)
return self.mets.get_physical_page_for_file(self)
@pageId.setter
def pageId(self, pageId):
"""
Get the ``@ID`` of the physical ``mets:structMap`` entry corresponding to this ``mets:file`` (physical page manifestation) to :py:attr:`pageId`.
"""
if pageId is None:
return
if self.mets is None:
raise Exception("OcrdFile %s has no member 'mets' pointing to parent OcrdMets" % self)
self.mets.set_physical_page_for_file(pageId, self)
@property
def loctypes(self):
"""
Get the ``@LOCTYPE``s of the ``mets:file``.
"""
return [x.get('LOCTYPE') for x in self._el.findall('mets:FLocat', NS)]
@property
def mimetype(self):
"""
Get the ``@MIMETYPE`` of the ``mets:file``.
"""
return self._el.get('MIMETYPE')
@mimetype.setter
def mimetype(self, mimetype):
"""
Set the ``@MIMETYPE`` of the ``mets:file`` to :py:attr:`mimetype`.
"""
if mimetype is None:
return
self._el.set('MIMETYPE', mimetype)
@property
def fileGrp(self):
"""
The ``@USE`` of the containing ``mets:fileGrp``
"""
parent = self._el.getparent()
if parent is not None:
return self._el.getparent().get('USE')
raise ValueError("OcrdFile not related to METS")
@property
def url(self):
"""
Get the remote/original URL ``@xlink:href`` of this ``mets:file``.
"""
el_FLocat = self._el.find('mets:FLocat[@LOCTYPE="URL"]', NS)
if el_FLocat is not None:
return el_FLocat.get("{%s}href" % NS["xlink"])
return ''
@url.setter
def url(self, url):
"""
Set the remote/original URL ``@xlink:href`` of this ``mets:file`` to :py:attr:`url`.
"""
el_FLocat = self._el.find('mets:FLocat[@LOCTYPE="URL"]', NS)
if url is None:
if el_FLocat:
self._el.remove(el_FLocat)
return
if el_FLocat is None:
el_FLocat = ET.SubElement(self._el, TAG_METS_FLOCAT)
el_FLocat.set("{%s}href" % NS["xlink"], url)
el_FLocat.set("LOCTYPE", "URL")
@property
def local_filename(self):
"""
Get the local/cached ``@xlink:href`` of this ``mets:file``.
"""
el_FLocat = self._el.find('mets:FLocat[@LOCTYPE="OTHER"][@OTHERLOCTYPE="FILE"]', NS)
if el_FLocat is not None:
return Path(el_FLocat.get("{%s}href" % NS["xlink"]))
@local_filename.setter
def local_filename(self, fname):
"""
Set the local/cached ``@xlink:href`` of this ``mets:file`` to :py:attr:`local_filename`.
"""
el_FLocat = self._el.find('mets:FLocat[@LOCTYPE="OTHER"][@OTHERLOCTYPE="FILE"]', NS)
if not fname:
if el_FLocat is not None:
self._el.remove(el_FLocat)
return
if el_FLocat is None:
el_FLocat = ET.SubElement(self._el, TAG_METS_FLOCAT)
el_FLocat.set("{%s}href" % NS["xlink"], str(fname))
el_FLocat.set("LOCTYPE", "OTHER")
el_FLocat.set("OTHERLOCTYPE", "FILE")
[docs]class ClientSideOcrdFile:
"""
Provides the same interface as :py:class:`ocrd_models.ocrd_file.OcrdFile`
but without attachment to :py:class:`ocrd_models.ocrd_mets.OcrdMets` since
this represents the response of the :py:class:`ocrd.mets_server.OcrdMetsServer`.
"""
def __init__(self, el, mimetype=None, pageId=None, loctype='OTHER', local_filename=None, mets=None, url=None, ID=None, fileGrp=None):
"""
Args:
el (): ignored
Keyword Args:
mets (): ignored
mimetype (string): ``@MIMETYPE`` of this ``mets:file``
pageId (string): ``@ID`` of the physical ``mets:structMap`` entry corresponding to this ``mets:file``
loctype (string): ``@LOCTYPE`` of this ``mets:file``
url (string): ignored XXX the remote/original file once we have proper mets:FLocat bookkeeping
local_filename (): ``@xlink:href`` of this ``mets:file`` - XXX the local file once we have proper mets:FLocat bookkeeping
ID (string): ``@ID`` of this ``mets:file``
"""
self.ID = ID
self.mimetype = mimetype
self.local_filename = local_filename
self.url = url
self.loctype = loctype
self.pageId = pageId
self.fileGrp = fileGrp
def __str__(self):
props = ', '.join([
'='.join([k, getattr(self, k) if hasattr(self, k) and getattr(self, k) else '---'])
for k in ['fileGrp', 'ID', 'mimetype', 'url', 'local_filename']
])
return '<ClientSideOcrdFile %s]/>' % (props)
