# Copyright 1999 by Jeffrey Chang.  All rights reserved.
# This code is part of the Biopython distribution and governed by its
# license.  Please see the LICENSE file that should have been included
# as part of this package.

from __future__ import print_function

import string
from Bio._py3k import StringIO
from Bio import File

import warnings
from Bio import BiopythonDeprecationWarning
with warnings.catch_warnings():
    warnings.simplefilter('ignore', BiopythonDeprecationWarning)
    from Bio import ParserSupport

# pyUnit


def pb(b):
    if b:
        return 1
    return 0

# TaggingConsumer

print("Running tests on TaggingConsumer")


class TestHandle(object):
    def write(self, s):
        print(s)

h = TestHandle()
tc = ParserSupport.TaggingConsumer(handle=h, colwidth=5)
tc.start_section()  # '***** start_section\n'
tc.test1('myline')  # 'test1: myline\n'
tc.end_section()    # '***** end_section\n'


# is_blank_line

print("Running tests on is_blank_line")

is_blank_line = lambda *args, **keywds: \
                pb(ParserSupport.is_blank_line(*args, **keywds))

print(is_blank_line('\n'))                              # 1
print(is_blank_line('\r\n'))                            # 1
print(is_blank_line('\r'))                              # 1
print(is_blank_line(''))                                # 1
print(is_blank_line('', allow_spaces=1))                # 1
print(is_blank_line('', allow_spaces=0))                # 1
print(is_blank_line(string.whitespace, allow_spaces=1))  # 1
print(is_blank_line('hello'))                           # 0
print(is_blank_line('hello', allow_spaces=1))           # 0
print(is_blank_line('hello', allow_spaces=0))           # 0
print(is_blank_line(string.whitespace, allow_spaces=0))  # 0


# safe_readline

print("Running tests on safe_readline")

data = """This
file"""

h = File.UndoHandle(StringIO(data))

safe_readline = ParserSupport.safe_readline
print(safe_readline(h))    # "This"
print(safe_readline(h))    # "file"
try:
    safe_readline(h)
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")


# safe_peekline

print("Running tests on safe_peekline")
safe_peekline = ParserSupport.safe_peekline

data = """This
file"""

h = File.UndoHandle(StringIO(data))

print(safe_peekline(h))  # "This"
h.readline()
print(safe_peekline(h))  # "file"
h.readline()
try:
    safe_peekline(h)
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")
h.saveline('hello')
print(safe_peekline(h))  # 'hello'


# read_and_call

print("Running tests on read_and_call")

data = """>gi|132871|sp|P19947|RL30_BACSU 50S RIBOSOMAL PROTEIN L30 (BL27)
MAKLEITLKRSVIGRPEDQRVTVRTLGLKKTNQTVVHEDNAAIRGMINKVSHLVSVKEQ
>gi|132679|sp|P19946|RL15_BACSU 50S RIBOSOMAL PROTEIN L15
MKLHELKPSEGSRKTRNRVGRGIGSGNGKTAGKGHKGQNARSGGGVRPGFEGGQMPLFQRLPKRGFTNIN
RKEYAVVNLDKLNGFAEGTEVTPELLLETGVISKLNAGVKILGNGKLEKKLTVKANKFSASAKEAVEAAG
GTAEVI


"""

h = File.UndoHandle(StringIO(data))

rac = ParserSupport.read_and_call
lines = []


def m(line):
    lines.append(line)

rac(h, m)
print(lines[-1][:10])   # '>gi|132871'
rac(h, m, start='MAKLE', end='KEQ', contains='SVIG')
rac(h, m, blank=0)

# These should be errors.  If they're not, then complain.
try:
    rac(h, m, blank=1)
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")

try:
    rac(h, m, start='foobar')
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")

try:
    rac(h, m, end='foobar')
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")

try:
    rac(h, m, contains='foobar')
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")

try:
    rac(h, m, blank=0)
except ValueError:
    print("correctly failed")
else:
    print("ERROR, should have failed")


# attempt_read_and_call

print("Running tests on attempt_read_and_call")

data = """>gi|132871|sp|P19947|RL30_BACSU 50S RIBOSOMAL PROTEIN L30 (BL27)
MAKLEITLKRSVIGRPEDQRVTVRTLGLKKTNQTVVHEDNAAIRGMINKVSHLVSVKEQ
>gi|132679|sp|P19946|RL15_BACSU 50S RIBOSOMAL PROTEIN L15
MKLHELKPSEGSRKTRNRVGRGIGSGNGKTAGKGHKGQNARSGGGVRPGFEGGQMPLFQRLPKRGFTNIN
RKEYAVVNLDKLNGFAEGTEVTPELLLETGVISKLNAGVKILGNGKLEKKLTVKANKFSASAKEAVEAAG
GTAEVI"""

h = File.UndoHandle(StringIO(data))

arac = lambda *args, **keywds: \
       pb(ParserSupport.attempt_read_and_call(*args, **keywds))
lines = []


def m(line):
    lines.append(line)

print(arac(h, m, contains="RIBOSOMAL PROTEIN"))   # 1
print(arac(h, m, start="foobar"))                 # 0
print(arac(h, m, blank=1))                        # 0
print(arac(h, m, end="LVSVKEQ"))                  # 1