Value Checkers
is_nonempty_value
Check if a value is not None-like or that its string representation contains at least one of the following characters:
\p{S}
= symbols and special characters\p{P}
= punctuation\w
= all Unicode letters, numbers, and _
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value of any type |
required |
Returns:
Type | Description |
---|---|
bool
|
True if the value is not None-like and contains at least one of the above-mentioned characters |
Examples:
# True values:
assert xmllib.is_nonempty_value("word") == True
assert xmllib.is_nonempty_value("None") == True
assert xmllib.is_nonempty_value("-") == True
assert xmllib.is_nonempty_value(0) == True
assert xmllib.is_nonempty_value(1) == True
assert xmllib.is_nonempty_value("0") == True
assert xmllib.is_nonempty_value("1") == True
assert xmllib.is_nonempty_value(True) == True
assert xmllib.is_nonempty_value(False) == True
assert xmllib.is_nonempty_value("עִבְרִית") == True
# False values:
assert xmllib.is_nonempty_value(pd.NA) == False
assert xmllib.is_nonempty_value(None) == False
assert xmllib.is_nonempty_value("") == False
assert xmllib.is_nonempty_value(" ") == False
assert xmllib.is_nonempty_value("\n") == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_bool_like
Checks if a value is a bool or can be converted into a bool. It is case-insensitive, meaning that the words can also be capitalised.
Accepted values
false
,0
,0.0
,no
,non
,nein
->False
true
,1
,1.0
,yes
,oui
,ja
->True
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it conforms |
Examples:
result = xmllib.is_bool_like("yes")
# result == True
result = xmllib.is_bool_like("not like a bool")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_color
Checks if a value is a color value.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it conforms |
Examples:
result = xmllib.is_color("#00ff66")
# result == True
result = xmllib.is_color("not a color")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_date
Checks if a value is a date value.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it conforms |
Examples:
result = xmllib.is_date("GREGORIAN:CE:2014-01-31:CE:2014-01-31")
# result == True
result = xmllib.is_date("not a date")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_geoname
Checks if a value is a geoname value.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it conforms |
Examples:
result = xmllib.is_geoname("8879000")
# result == True
result = xmllib.is_geoname("not a geoname code")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_decimal
Checks if a value is a float, an integer, or a string which can be converted into a float.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if conforms to the above-mentioned criteria. |
Examples:
result = xmllib.is_decimal("0.1")
# result == True
# because this is equivalent to 9.0 it is accepted
result = xmllib.is_decimal(9)
# result == True
result = xmllib.is_decimal("not a decimal")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_integer
Checks if a value is an integer or a string which can be converted into an integer.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if conforms to the above-mentioned criteria. |
Examples:
result = xmllib.is_integer("1")
# result == True
result = xmllib.is_integer(9.1)
# result == False
result = xmllib.is_integer("not an integer")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_link_value
Check if a value is a valid internal ID of a resource (xsd:ID) or a valid internal DSP IRI. Both of these values are allowed in LinkValues.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
the target ID of a LinkValue |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it is a permissible value. |
Examples:
result = xmllib.is_link_value("1_must_not_start_with_number")
# result == False
result = xmllib.is_link_value("characters|not|allowed")
# result == False
result = xmllib.is_link_value("resource_id_1")
# result == True
result = xmllib.is_link_value("http://rdfh.ch/4123/54SYvWF0QUW6a")
# result == True
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_valid_resource_id
Check if a value is a valid internal ID of a resource (xsd:ID).
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
the ID of a Resource |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it is a permissible value. |
Examples:
result = xmllib.is_valid_resource_id("1_must_not_start_with_number")
# result == False
result = xmllib.is_valid_resource_id("characters|not|allowed")
# result == False
result = xmllib.is_valid_resource_id("resource_id_1")
# result == True
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_timestamp
Checks if a value is a valid timestamp.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
value to check |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it conforms |
Examples:
result = xmllib.is_timestamp("2019-10-23T13:45:12Z")
# result == True
result = xmllib.is_timestamp("not a time stamp")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_dsp_iri
Check if a value is a valid internal DSP IRI.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
IRI |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it is valid, else false |
Examples:
result = xmllib.is_dsp_iri("http://rdfh.ch/4123/54SYvWF0QUW6a")
# result == True
result = xmllib.is_dsp_iri("http://dbpedia.org/resource/Internationalized_Resource_Identifier")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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is_dsp_ark
Checks if a value is a valid ARK.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
value
|
Any
|
ARK |
required |
Returns:
Type | Description |
---|---|
bool
|
True if it is valid, else false |
Examples:
result = xmllib.is_dsp_ark("ark:/72163/4123-31ec6eab334-a.2022829")
# result == True
result = xmllib.is_dsp_ark("http://rdfh.ch/4123/54SYvWF0QUW6a")
# result == False
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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check_richtext_syntax
DSP richtexts must be convertible into valid XML.
This checker escapes the reserved characters <
, >
and &
,
but only if they are not part of a standard standoff tag or escape sequence.
Then, it tries to parse the resulting XML.
Note: Only DSP standard standoff tags are allowed in richtexts. They are documented here.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
richtext
|
str
|
richtext to check |
required |
Warns:
Type | Description |
---|---|
XmllibInputWarning
|
if the input contains XML syntax problems |
Source code in dsp/dsp-tools/src/dsp_tools/xmllib/value_checkers.py
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