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Feature/load error messages #134

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Feature/load error messages #134

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71a8f56
improvements on error messages when file access is impossible
daknuett Oct 6, 2023
a93cfc7
internally, gpt is used as gpt
daknuett Oct 6, 2023
732acc2
some reasoning on error messages
daknuett Oct 6, 2023
4099dbc
linting
daknuett Oct 6, 2023
f909c05
linting
daknuett Oct 6, 2023
47785fa
adapted error messages to flexibility of gpt.load
daknuett Oct 6, 2023
b53c993
LoadError -> gpt.LoadError
daknuett Oct 6, 2023
893bbd7
removed unused import
daknuett Oct 25, 2023
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13 changes: 12 additions & 1 deletion lib/gpt/core/io/load.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,14 +18,15 @@
#
import gpt, cgpt
from gpt.params import params_convention
import os


# load through cgpt backend (openQCD, ...)
def load_cgpt(*a):
result = []
r, metadata = cgpt.load(*a, gpt.default.is_verbose("io"))
if r is None:
raise gpt.LoadError()
raise gpt.LoadError(f"file: {a[0]}")
for gr in r:
grid = gpt.grid(gr[1], eval("gpt." + gr[2]), eval("gpt." + gr[3]), gr[0])
result_grid = []
Expand Down Expand Up @@ -65,6 +66,16 @@ def load(fn, **p):
# rules this one out as well
pass

if not os.path.exists(fn):
# XXX: when implementing non-file URLs, change this error message.
raise FileNotFoundError(f"[Errno 2] No such file or directory: '{fn}'")

if os.path.isfile(fn):
if not os.access(fn, os.R_OK):
raise PermissionError(f"[Errno 13] Permission denied: '{fn}'")
if os.path.isdir(fn):
raise gpt.LoadError(f"Error: '{fn}' is a directory and gpt_io failed to process it (permissions[+x] ok? wrong path?).")

a = [fn]
if len(p) > 0:
a.append(p)
Expand Down