circuitpython/tests/unicode/file2.py

# test reading a given number of characters

def do(mode):
    if mode == 'rb':
        enc = None
    else:
        enc = 'utf-8'
    f = open('unicode/data/utf-8_2.txt', mode=mode, encoding=enc)
    print(f.read(1))
    print(f.read(1))
    print(f.read(2))
    print(f.read(4))
    f.close()

do('rb')
do('rt')
py: Add stream reading of n unicode chars; unicode support by default. With unicode enabled, this patch allows reading a fixed number of characters from text-mode streams; eg file.read(5) will read 5 unicode chars, which can made of more than 5 bytes. For an ASCII stream (ie no chars > 127) it only needs to do 1 read. If there are lots of non-ASCII chars in a stream, then it needs multiple reads of the underlying object. Adds a new test for this case. Enables unicode support by default on unix and stmhal ports. 2014-07-16 06:45:10 -04:00			`# test reading a given number of characters`

			`def do(mode):`
Use mode/encoding kwargs in io and unicode tests mode argument is used to assert it works encoding argument is used to make sure CPython uses the correct encoding as it does not automatically use utf-8 2014-10-04 02:54:16 -04:00			`if mode == 'rb':`
			`enc = None`
			`else:`
			`enc = 'utf-8'`
			`f = open('unicode/data/utf-8_2.txt', mode=mode, encoding=enc)`
py: Add stream reading of n unicode chars; unicode support by default. With unicode enabled, this patch allows reading a fixed number of characters from text-mode streams; eg file.read(5) will read 5 unicode chars, which can made of more than 5 bytes. For an ASCII stream (ie no chars > 127) it only needs to do 1 read. If there are lots of non-ASCII chars in a stream, then it needs multiple reads of the underlying object. Adds a new test for this case. Enables unicode support by default on unix and stmhal ports. 2014-07-16 06:45:10 -04:00			`print(f.read(1))`
			`print(f.read(1))`
			`print(f.read(2))`
			`print(f.read(4))`
			`f.close()`

			`do('rb')`
			`do('rt')`