more user friendly errors

This commit is contained in:
Martin Diehl 2019-05-26 12:03:21 +02:00
parent be3513d1e0
commit dcb79afc84
1 changed files with 30 additions and 15 deletions

View File

@ -1,24 +1,28 @@
import numpy as np
import math import math
from io import StringIO from io import StringIO
import numpy as np
class Geom(): class Geom():
"""Geometry definition for grid solvers""" """Geometry definition for grid solvers"""
def __init__(self,size,microstructure,homogenization=1,comments=[]): def __init__(self,size,microstructure,homogenization=1,comments=[]):
"""New geometry definition from array of microstructures and size""" """New geometry definition from array of microstructures and size"""
if len(size) != 3 or any(np.array(size)<=0): if len(size) != 3 or any(np.array(size)<=0):
raise ValueError('invalid size') raise ValueError('Invalid size {}'.format(*size))
else: else:
self.size = np.array(size) self.size = np.array(size)
if len(microstructure.shape) != 3: if len(microstructure.shape) != 3:
raise ValueError('invalid microstructure') raise ValueError('Invalid microstructure shape {}'.format(*microstructure.shape))
elif microstructure.dtype not in ['int','float']:
raise TypeError('Invalid data type {} for microstructure'.format(microstructure.dtype))
else: else:
self.microstructure = microstructure self.microstructure = microstructure
if not isinstance(homogenization,int) or homogenization < 1: if not isinstance(homogenization,int) or homogenization < 1:
raise ValueError('invalid homogenization') raise TypeError('Invalid homogenization {}'.format(homogenization))
else: else:
self.homogenization = homogenization self.homogenization = homogenization
@ -47,6 +51,7 @@ class Geom():
def set_size(self,size): def set_size(self,size):
self.size = np.array(size) self.size = np.array(size)
def get_microstructure(self): def get_microstructure(self):
return self.microstructure return self.microstructure
@ -59,16 +64,22 @@ class Geom():
def get_homogenization(self): def get_homogenization(self):
return self.homogenization return self.homogenization
@classmethod @classmethod
def from_file(cls,fname): def from_file(cls,fname):
"""Reads from *.geom file"""
if isinstance(fname,str): if isinstance(fname,str):
with open(fname) as f: f = open(fname)
header_length = int(f.readline().split()[0]) header_length,keyword = f.readline().split()
comments_old = [f.readline() for i in range(header_length)] if not keyword.startswith('head') or int(header_length) < 3:
raise TypeError('Header length information missing or invalid')
comments_old = [f.readline() for i in range(int(header_length))]
else: else:
fname.seek(0) fname.seek(0)
header_length = int(fname.readline().split()[0]) header_length,keyword = f.readline().split()
comments_old = [fname.readline() for i in range(header_length)] if not keyword.startswith('head') or int(header_length) < 3:
raise TypeError('Header length information missing or invalid')
comments_old = [fname.readline() for i in range(int(header_length))]
comments = [] comments = []
for i,line in enumerate(comments_old): for i,line in enumerate(comments_old):
@ -82,14 +93,13 @@ class Geom():
comments.append(line.rstrip().strip()) comments.append(line.rstrip().strip())
if isinstance(fname,str): if isinstance(fname,str):
with open(fname) as f: raw = f.readlines()
raw = f.readlines()[header_length+1:] f.close()
else: else:
raw = fname.readlines() raw = fname.readlines()
microstructure = np.empty(grid.prod()) # initialize as flat array microstructure = np.empty(grid.prod()) # initialize as flat array
i = 0 i = 0
for line in raw: for line in raw:
items = line.split() items = line.split()
if len(items) == 3: if len(items) == 3:
@ -104,6 +114,9 @@ class Geom():
microstructure[i:i+len(items)] = items microstructure[i:i+len(items)] = items
i += len(items) i += len(items)
if i != grid.prod():
raise TypeError('Invalid file: expected {} entries,found {}'.format(grid.prod(),i))
microstructure = microstructure.reshape(grid,order='F') microstructure = microstructure.reshape(grid,order='F')
if np.any(np.mod(microstructure.flatten(),1)!=0.0): if np.any(np.mod(microstructure.flatten(),1)!=0.0):
@ -114,6 +127,7 @@ class Geom():
return cls(size,microstructure.reshape(grid),homogenization,comments) return cls(size,microstructure.reshape(grid),homogenization,comments)
def to_file(self,fname): def to_file(self,fname):
"""Saves to file"""
grid = self.get_grid() grid = self.get_grid()
header = ['{} header'.format(len(self.comments)+3)] header = ['{} header'.format(len(self.comments)+3)]
header += self.comments header += self.comments
@ -129,6 +143,7 @@ class Geom():
header='\n'.join(header), fmt=format_string, comments='') header='\n'.join(header), fmt=format_string, comments='')
def show(self): def show(self):
"""Show raw content (as in file)"""
f=StringIO() f=StringIO()
self.to_file(f) self.to_file(f)
f.seek(0) f.seek(0)