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Modified abaqus parser to enable inp files with multiple NODE blocks #1441

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Modified abaqus parser to enable inp files with multiple NODE blocks #1441

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20 changes: 15 additions & 5 deletions src/meshio/abaqus/_abaqus.py
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Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,7 @@ def read(filename):

def read_buffer(f):
# Initialize the optional data fields
points = []
points = None
cells = []
cell_ids = []
point_sets = {}
Expand All @@ -121,6 +121,9 @@ def read_buffer(f):
point_data = {}
point_ids = None

# MODIFIED jeffrey-cochran: Keep track of point id through multiple node blocks
counter = 0

line = f.readline()
while True:
if not line: # EOF
Expand All @@ -133,7 +136,15 @@ def read_buffer(f):

keyword = line.partition(",")[0].strip().replace("*", "").upper()
if keyword == "NODE":
points, point_ids, line = _read_nodes(f)
# MODIFIED jeffrey-cochran: persist counter
tmp_points, tmp_point_ids, line, counter = _read_nodes(f, counter=counter)

# MODIFIED jeffrey-cochran: persist points
points = tmp_points if points is None else np.concatenate((points, tmp_points), axis=0)

# MODIFIED jeffrey-cochran: persist point_ids
point_ids = tmp_point_ids if point_ids is None else {**point_ids, **tmp_point_ids}

elif keyword == "ELEMENT":
if point_ids is None:
raise ReadError("Expected NODE before ELEMENT")
Expand Down Expand Up @@ -228,10 +239,9 @@ def read_buffer(f):
)


def _read_nodes(f):
def _read_nodes(f, counter=None):
points = []
point_ids = {}
counter = 0
while True:
line = f.readline()
if not line or line.startswith("*"):
Expand All @@ -245,7 +255,7 @@ def _read_nodes(f):
points.append([float(x) for x in coords])
counter += 1

return np.array(points, dtype=float), point_ids, line
return np.array(points, dtype=float), point_ids, line, counter


def _read_cells(f, params_map, point_ids):
Expand Down