status-im/QR-Code-generator
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Added and updated 4 comments in all language versions.

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Project Nayuki
2018-08-22 19:22:00 +00:00
parent a2977e6351
commit d1f53e6e7d
8 changed files with 56 additions and 49 deletions
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python/qrcodegen.py
+8 -7
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@@ -111,11 +111,11 @@ class QrCode(object):
raise AssertionError()
# Increase the error correction level while the data still fits in the current version number
for newecl in (QrCode.Ecc.MEDIUM, QrCode.Ecc.QUARTILE, QrCode.Ecc.HIGH):
for newecl in (QrCode.Ecc.MEDIUM, QrCode.Ecc.QUARTILE, QrCode.Ecc.HIGH): # From low to high
if boostecl and datausedbits <= QrCode._get_num_data_codewords(version, newecl) * 8:
ecl = newecl
# Create the data bit string by concatenating all segments
# Concatenate all segments to create the data bit string
datacapacitybits = QrCode._get_num_data_codewords(version, ecl) * 8
bb = _BitBuffer()
for seg in segs:
@@ -291,7 +291,7 @@ class QrCode(object):
self._set_function_module(self._size - 1 - i, 8, _get_bit(data, i))
for i in range(8, 15):
self._set_function_module(8, self._size - 15 + i, _get_bit(data, i))
self._set_function_module(8, self._size - 8, True)
self._set_function_module(8, self._size - 8, True) # Always black
def _draw_version(self):
@@ -404,10 +404,11 @@ class QrCode(object):
def _apply_mask(self, mask):
"""XORs the data modules in this QR Code with the given mask pattern. Due to XOR's mathematical
properties, calling applyMask(m) twice with the same value is equivalent to no change at all.
This means it is possible to apply a mask, undo it, and try another mask. Note that a final
well-formed QR Code symbol needs exactly one mask applied (not zero, not two, etc.)."""
"""XORs the codeword modules in this QR Code with the given mask pattern.
The function modules must be marked and the codeword bits must be drawn
before masking. Due to the arithmetic of XOR, calling applyMask() with
the same mask value a second time will undo the mask. A final well-formed
QR Code symbol needs exactly one (not zero, two, etc.) mask applied."""
if not (0 <= mask <= 7):
raise ValueError("Mask value out of range")
masker = QrCode._MASK_PATTERNS[mask]