def _get_card_name(lines: List[str], active_filename: str) -> Optional[str]:
"""
Returns the name of the card defined by the provided lines
Parameters
----------
lines : list[str]
the lines of the card
Returns
-------
card_name : str
the name of the card
"""
card_name = lines[0][:8].rstrip('\t, ').split(',')[0].split('\t')[0].strip(
'*\t ')
if len(card_name) == 0:
return None
if ' ' in card_name or len(card_name) == 0:
msg = 'card_name=%r\nline=%r in filename=%r is invalid' \
% (card_name, lines[0], active_filename)
print(msg)
raise CardParseSyntaxError(msg)
return card_name.upper()
def expand_tabs(line: str) -> str:
"""expands the tabs; breaks if you mix commas and tabs"""
line = line.expandtabs()
if ',' in line:
line = line.replace('\t', '')
msg = 'tabs and commas in the same line are not supported...\nline=%r' % line
raise CardParseSyntaxError(msg)
return line
def to_fields_long(card_lines, card_name):
# type: (List[str], str) -> List[str]
"""
Converts a series of lines in a card into string versions of the field.
Handles large, small, and CSV formatted cards.
Doesn't consider Nastran's rule about 72 character width fields,
which is nice when you have poorly formatted BDFs.
Parameters
----------
lines : List[str]
the lines of the BDF card object
card_name : str
the card_name -> 'GRID'
Returns
-------
fields : List[str]
the string formatted fields of the card
.. warning:: this function is used by the reader and isn't intended
to be called by a separate process
.. code-block:: python
>>> card_lines = ['GRID,1,,1.0,2.0,3.0']
>>> card_name = 'GRID'
>>> fields = to_fields_long(lines, card_name)
>>> fields
['GRID', '1', '', '1.0', '2.0', '3.0']
"""
fields = [] # type: List[str]
if card_name == 'MONPNT1':
return _to_fields_mntpnt1(card_lines)
# first line
line = card_lines.pop(0)
if '=' in line:
msg = 'card_name=%r\nequal signs are not supported...line=%r' % (card_name, line)
raise CardParseSyntaxError(msg)
if '\t' in line:
line = line.expandtabs()
if ',' in line:
msg = 'tabs and commas in the same line are not supported...line=%r' % line
raise CardParseSyntaxError(msg)
if '*' in line: # large field
if ',' in line: # csv
new_fields = line.split(',')[:5]
for i in range(5 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [line[0:8], line[8:24], line[24:40], line[40:56],
line[56:72]]
fields += new_fields
assert len(fields) == 5, fields
else: # small field
if ',' in line: # csv
new_fields = line.split(',')[:9]
for i in range(9 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [line[0:8], line[8:16], line[16:24], line[24:32],
line[32:40], line[40:48], line[48:56], line[56:64],
line[64:72]]
fields += new_fields
assert len(fields) == 9, fields
for j, line in enumerate(card_lines): # continuation lines
if '=' in line and card_name != 'EIGRL':
msg = 'card_name=%r\nequal signs are not supported...line=%r' % (card_name, line)
raise CardParseSyntaxError(msg)
if '\t' in line:
line = line.expandtabs()
if ',' in line:
msg = 'tabs and commas in the same line are not supported...line=%r' % line
raise CardParseSyntaxError(msg)
if '*' in line: # large field
if ',' in line: # csv
new_fields = line.split(',')[1:5]
for i in range(4 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [line[8:24], line[24:40], line[40:56], line[56:72]]
assert len(new_fields) == 4, new_fields
else: # small field
if ',' in line: # csv
new_fields = line.split(',')[1:9]
for i in range(8 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [line[8:16], line[16:24], line[24:32],
line[32:40], line[40:48], line[48:56],
line[56:64], line[64:72]]
if len(new_fields) != 8:
nfields = len(new_fields)
msg = 'nFields=%s new_fields=%s' % (nfields, new_fields)
raise RuntimeError(msg)
fields += new_fields
return fields #[field.strip() for field in fields]
def to_fields(card_lines: List[str], card_name: str) -> List[str]:
"""
Converts a series of lines in a card into string versions of the field.
Handles large, small, and CSV formatted cards.
Parameters
----------
lines : List[str]
the lines of the BDF card object
card_name : str
the card_name -> 'GRID'
Returns
-------
fields : List[str]
the string formatted fields of the card
.. warning:: this function is used by the reader and isn't intended
to be called by a separate process
.. code-block:: python
>>> card_lines = ['GRID,1,,1.0,2.0,3.0']
>>> card_name = 'GRID'
>>> fields = to_fields(lines, card_name)
>>> fields
['GRID', '1', '', '1.0', '2.0', '3.0']
"""
fields = [] # type: List[str]
if card_name == 'MONPNT1':
return _to_fields_mntpnt1(card_lines)
# first line
line = card_lines[0]
if '=' in line:
msg = 'card_name=%r\nequal signs are not supported...line=%r' % (
card_name, line)
raise CardParseSyntaxError(msg)
if '\t' in line:
line = expand_tabs(line)
if '*' in line: # large field
if ',' in line: # csv
new_fields = line.split(',')[:5]
for unused_i in range(5 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [
line[0:8], line[8:24], line[24:40], line[40:56], line[56:72]
]
fields += new_fields
assert len(fields) == 5, fields
else: # small field
if ',' in line: # csv
new_fields = line.split(',')[:9]
for unused_i in range(9 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [
line[0:8], line[8:16], line[16:24], line[24:32], line[32:40],
line[40:48], line[48:56], line[56:64], line[64:72]
]
fields += new_fields
assert len(fields) == 9, fields
for line in card_lines[1:]: # continuation lines
if '=' in line and card_name != 'EIGRL':
msg = 'card_name=%r\nequal signs are not supported...\nline=%r' % (
card_name, line)
raise CardParseSyntaxError(msg)
if '\t' in line:
line = expand_tabs(line)
if '*' in line: # large field
if ',' in line: # csv
new_fields = line.split(',')[1:5]
for unused_i in range(4 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [
line[8:24], line[24:40], line[40:56], line[56:72]
]
assert len(new_fields) == 4, new_fields
else: # small field
if ',' in line: # csv
new_fields = line.split(',')[1:9]
for unused_i in range(8 - len(new_fields)):
new_fields.append('')
else: # standard
new_fields = [
line[8:16], line[16:24], line[24:32], line[32:40],
line[40:48], line[48:56], line[56:64], line[64:72]
]
if len(new_fields) != 8:
nfields = len(new_fields)
msg = 'nfields=%s new_fields=%s' % (nfields, new_fields)
raise RuntimeError(msg)
fields += new_fields
return fields