def get_localized_text(self, schema_ns, alt_text_name, generic_lang,
specific_lang, **kwargs):
"""
get_localized_text() returns information about a selected item in an alt-text array.
:param schema_ns The namespace URI for the alt-text array. Has the same usage as in GetProperty.
:param alt_text_name The name of the alt-text array. May be a general path expression, must not be null or the empty string. Has the same namespace prefix usage as propName in GetProperty.
:param generic_lang The name of the generic language as an RFC 3066 primary subtag. May be null or the empty string if no generic language is wanted.
:param specific_lang The name of the specific language as an RFC 3066 tag. Must not be null or the empty string.
:return: The property's value if the property exists, None otherwise.
"""
value = None
value_lang = None
the_prop = _exempi.xmp_string_new()
actual_lang = _exempi.xmp_string_new()
options = c_int32()
if _exempi.xmp_get_localized_text(self.xmpptr, schema_ns,
alt_text_name, generic_lang,
specific_lang, actual_lang, the_prop,
byref(options)):
value = _exempi.xmp_string_cstr(the_prop)
value_lang = _exempi.xmp_string_cstr(actual_lang)
_exempi.xmp_string_free(the_prop)
_exempi.xmp_string_free(actual_lang)
return value
def get_localized_text(self, schema_ns, alt_text_name, generic_lang, specific_lang, **kwargs ): """ get_localized_text() returns information about a selected item in an alt-text array. :param schema_ns The namespace URI for the alt-text array. Has the same usage as in GetProperty. :param alt_text_name The name of the alt-text array. May be a general path expression, must not be null or the empty string. Has the same namespace prefix usage as propName in GetProperty. :param generic_lang The name of the generic language as an RFC 3066 primary subtag. May be null or the empty string if no generic language is wanted. :param specific_lang The name of the specific language as an RFC 3066 tag. Must not be null or the empty string. :return: The property's value if the property exists, None otherwise. """ value = None value_lang = None the_prop = _exempi.xmp_string_new() actual_lang = _exempi.xmp_string_new() options = c_int32() if _exempi.xmp_get_localized_text( self.xmpptr, schema_ns, alt_text_name, generic_lang, specific_lang, actual_lang, the_prop, byref(options) ): value = _exempi.xmp_string_cstr(the_prop) value_lang = _exempi.xmp_string_cstr(actual_lang) _exempi.xmp_string_free(the_prop) _exempi.xmp_string_free(actual_lang) return value
def get_namespace_for_prefix(prefix): """ Checks if a prefix is registered. Parameters: prefix: the prefix to check. Returns the associated namespace if registered, None if the prefix is not registered """ associated_namespace = _exempi.xmp_string_new() if _exempi.xmp_prefix_namespace_uri(prefix, associated_namespace): return _exempi.xmp_string_cstr(associated_namespace) else: return None
def get_namespace_for_prefix(prefix):
"""
Checks if a prefix is registered.
Parameters:
prefix: the prefix to check.
Returns the associated namespace if registered, None if the prefix is not registered
"""
associated_namespace = _exempi.xmp_string_new()
if _exempi.xmp_prefix_namespace_uri(prefix, associated_namespace):
return _exempi.xmp_string_cstr(associated_namespace)
else:
return None
def get_prefix_for_namespace(namespace):
"""
Check if a namespace is registered.
Parameters:
namespace: the namespace to check.
Returns the associated prefix if registered, None if the namespace is not registered
"""
associated_prefix = _exempi.xmp_string_new()
if _exempi.xmp_namespace_prefix(namespace, associated_prefix):
return _exempi.xmp_string_cstr(associated_prefix)
else:
return None
def get_prefix_for_namespace(namespace): """ Check if a namespace is registered. Parameters: namespace: the namespace to check. Returns the associated prefix if registered, None if the namespace is not registered """ associated_prefix = _exempi.xmp_string_new() if _exempi.xmp_namespace_prefix(namespace, associated_prefix): return _exempi.xmp_string_cstr(associated_prefix) else: return None
def count_array_items( self, schema_ns, array_name ): """ count_array_items returns the number of a given array's items """ index = 0 the_prop = _exempi.xmp_string_new() while( True ): if _exempi.xmp_get_array_item( self.xmpptr, str(schema_ns), str(array_name), index+1, the_prop, None): index += 1 else: break return index
def get_array_item( self, schema_ns, array_name, item_index ):
"""
get_array_item() provides access to items within an array.
Reports whether the item exists; if it does, and if it has a value, the function retrieves the value.; if it doesn't it raises Exception.
Items are accessed by an integer index, where the first item has index 1.
.. todo:: Make get_array_item optionally return keywords describing array item's options
"""
the_prop = _exempi.xmp_string_new()
options = c_int32()
if _exempi.xmp_get_array_item( self.xmpptr, schema_ns, array_name, item_index, the_prop, byref(options)): #we're never returning options
return {_exempi.xmp_string_cstr(the_prop):options.value}
else:
raise Exception, "Array's over"
def register_namespace( namespace_uri, suggested_prefix ): """ Register a new namespace to save properties to. Parameters: namespace_uri: the new namespace's URI suggested prefix: the suggested prefix: note that is NOT guaranteed it'll be the actual namespace's prefix Returns the actual registered prefix for the namespace of None if the namespace wasn't created. """ registered_prefix = _exempi.xmp_string_new() if _exempi.xmp_register_namespace(namespace_uri, suggested_prefix, registered_prefix): return _exempi.xmp_string_cstr(registered_prefix) else: return None
def count_array_items(self, schema_ns, array_name):
"""
count_array_items returns the number of a given array's items
"""
index = 0
the_prop = _exempi.xmp_string_new()
while (True):
if _exempi.xmp_get_array_item(self.xmpptr, str(schema_ns),
str(array_name), index + 1, the_prop,
None):
index += 1
else:
break
return index
def register_namespace(namespace_uri, suggested_prefix):
"""
Register a new namespace to save properties to.
Parameters:
namespace_uri: the new namespace's URI
suggested prefix: the suggested prefix: note that is NOT guaranteed it'll be the actual namespace's prefix
Returns the actual registered prefix for the namespace of None if the namespace wasn't created.
"""
registered_prefix = _exempi.xmp_string_new()
if _exempi.xmp_register_namespace(namespace_uri, suggested_prefix,
registered_prefix):
return _exempi.xmp_string_cstr(registered_prefix)
else:
return None
def does_array_item_exist(self, schema_ns, array_name, item ): """ does_array_item_exist() reports whether an array's item currently exists. :return: True if item is in array, False otherwise :rtype: bool """ index = 0 the_prop = _exempi.xmp_string_new() while( True ): if _exempi.xmp_get_array_item( self.xmpptr, str(schema_ns), str(array_name), index+1, the_prop, None): index += 1 else: break return index
def get_array_item(self, schema_ns, array_name, item_index):
"""
get_array_item() provides access to items within an array.
Reports whether the item exists; if it does, and if it has a value, the function retrieves the value.; if it doesn't it raises Exception.
Items are accessed by an integer index, where the first item has index 1.
.. todo:: Make get_array_item optionally return keywords describing array item's options
"""
the_prop = _exempi.xmp_string_new()
options = c_int32()
if _exempi.xmp_get_array_item(
self.xmpptr, schema_ns, array_name, item_index, the_prop,
byref(options)): # we're never returning options
return {_exempi.xmp_string_cstr(the_prop): options.value}
else:
raise Exception, "Array's over"
def does_array_item_exist(self, schema_ns, array_name, item):
"""
does_array_item_exist() reports whether an array's item currently exists.
:return: True if item is in array, False otherwise
:rtype: bool
"""
index = 0
the_prop = _exempi.xmp_string_new()
while (True):
if _exempi.xmp_get_array_item(self.xmpptr, str(schema_ns),
str(array_name), index + 1, the_prop,
None):
index += 1
else:
break
return index
def get_property(self, schema_ns, prop_name): """ get_property() reports whether a property exists, and retrieves its value. This is the simplest property accessor: use this to retrieve the values of top-level simple properties. :param schema_ns The namespace URI for the property; can be null or the empty string if the first component of the prop_name path contains a namespace prefix. :param prop_name The name of the property. Can be a general path expression, must not be null or the empty string. The first component can be a namespace prefix; if present without a schema_ns value, the prefix specifies the namespace. :return: The property's value if the property exists, None otherwise. .. todo:: Make get_property optionally return keywords describing property's options """ value = None the_prop = _exempi.xmp_string_new() if _exempi.xmp_get_property( self.xmpptr, schema_ns, prop_name, the_prop, 0 ): #we're never returning options value = _exempi.xmp_string_cstr(the_prop) _exempi.xmp_string_free(the_prop) return value
def get_property(self, schema_ns, prop_name):
"""
get_property() reports whether a property exists, and retrieves its value.
This is the simplest property accessor: use this to retrieve the values of top-level simple properties.
:param schema_ns The namespace URI for the property; can be null or the empty string if the first component of the prop_name path contains a namespace prefix.
:param prop_name The name of the property. Can be a general path expression, must not be null or the empty string. The first component can be a namespace prefix; if present without a schema_ns value, the prefix specifies the namespace.
:return: The property's value if the property exists, None otherwise.
.. todo:: Make get_property optionally return keywords describing property's options
"""
value = None
the_prop = _exempi.xmp_string_new()
if _exempi.xmp_get_property(self.xmpptr, schema_ns, prop_name,
the_prop,
0): # we're never returning options
value = _exempi.xmp_string_cstr(the_prop)
_exempi.xmp_string_free(the_prop)
return value
def __init__(self): self._ptr = _exempi.xmp_string_new()
def __init__(self):
self._ptr = _exempi.xmp_string_new()
