/usr/lib/python2.7/dist-packages/biotools/analysis/loaddata.py is in python-biotools 1.2.12-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This is a pretty simple JSON-like parser. Specifically, it can load Python-like
object, list, and other literals, i.e., the sort of stuff you'd get it you
dumped the the string representation of some data into a file.
The real difference is that you must specify a variable name, e.g.:
```python
my_stuff = { ... }
```
These variable names don't need to be on a newline or anything like that, you
should be able to omit any and all whitespace. The result of a successful
parse is a dictionary:
```python
{'my_stuff': { ... }}
```
This function really only works for `None`, `True`, `False`, numbers, strings,
dictionaries, and lists.
'''
def parse(ipt):
par = {'char': '', 'pos': -1}
leng = 0
val = ""
ret = {}
def advance(test=None):
curr = par['char']
if test and test != curr:
raise ValueError("Expected %s, saw %s." % (test, curr))
par['pos'] += 1
if par['pos'] < leng:
par['char'] = val[par['pos']]
else:
par['char'] = ''
def whitespace():
while par['char'] and ord(par['char']) <= ord(' '):
advance()
def variable():
whitespace()
start = par['pos']
while \
('0' <= par['char'] <= '9') or \
('A' <= par['char'] <= 'Z') or \
('a' <= par['char'] <= 'z'):
advance()
stop = par['pos']
whitespace()
advance('=')
return (val[start:stop], value())
def value():
whitespace()
if par['char'] == '{':
return dictionary()
if par['char'] == '[':
return array()
if par['char'] in ("'", '"'):
return string()
if '0' <= par['char'] <= '9' or par['char'] == '-':
return number()
at = par['pos']
if par['char'] == 'T':
advance('r')
advance('u')
advance('e')
return True
if par['char'] == 'F':
advance('a')
advance('l')
advance('s')
advance('e')
return False
if par['char'] == 'N':
advance('o')
advance('n')
advance('e')
return None
prefix = val[at:par['pos']]
raise ValueError("Unexpected value starting with %s." % prefix)
def dictionary():
ret = {}
advance('{')
whitespace()
while par['char'] != '}':
s = value()
advance(':')
v = value()
ret[s] = v
if par['char'] == ',':
advance(',')
else:
break
advance('}')
whitespace()
return ret
def array():
ret = []
advance('[')
whitespace()
while par['char'] != ']':
ret.append(value())
if par['char'] == ',':
advance(',')
else:
break
advance(']')
whitespace()
return ret
def string():
ret = ""
q = par['char']
advance(q)
while par['char'] != q:
if par['char'] == '\\':
advance('\\')
if par['char'] == 'n':
ret += '\n'
elif par['char'] == 't':
ret += '\t'
else:
ret += par['char']
advance()
continue
ret += par['char']
advance()
advance(q)
whitespace()
return ret
def number():
ret = ""
if par['char'] == '-':
ret += '-'
advance('-')
while '0' <= par['char'] <= '9':
ret += par['char']
advance()
if par['char'] == '.':
ret += '.'
advance('.')
while '0' <= par['char'] <= '9':
ret += par['char']
advance()
if par['char'] in ('e', 'E'):
ret += par['char']
advance()
if par['char'] == '-':
ret += '-'
advance('-')
while '0' <= par['char'] <= '9':
ret += par['char']
advance()
whitespace()
return float(ret)
for line in ipt:
val += line
leng += len(line)
advance()
while par['pos'] < leng:
k, v = variable()
ret[k] = v
return ret
|