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Fix native message examples with python3 (#157)
Provide a single .py that handles both Python 2.x and Python 3.x * Fix python3 * Use one Python file to handle both Python 3.x and Python 2.x * Actually add the new file this time * Remove unnecessary parentheses
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Original file line number | Diff line number | Diff line change |
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@@ -1,34 +1,62 @@ | ||
#!/usr/bin/env python | ||
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import sys | ||
import json | ||
import struct | ||
import sys | ||
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try: | ||
# Python 3.x version | ||
# Read a message from stdin and decode it. | ||
def getMessage(): | ||
rawLength = sys.stdin.buffer.read(4) | ||
if len(rawLength) == 0: | ||
sys.exit(0) | ||
messageLength = struct.unpack('@I', rawLength)[0] | ||
message = sys.stdin.buffer.read(messageLength).decode('utf-8') | ||
return json.loads(message) | ||
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# Read a message from stdin and decode it. | ||
def getMessage(): | ||
rawLength = sys.stdin.read(4) | ||
if len(rawLength) == 0: | ||
sys.exit(0) | ||
messageLength = struct.unpack('@I', rawLength)[0] | ||
message = sys.stdin.read(messageLength) | ||
return json.loads(message) | ||
# Encode a message for transmission, | ||
# given its content. | ||
def encodeMessage(messageContent): | ||
encodedContent = json.dumps(messageContent).encode('utf-8') | ||
encodedLength = struct.pack('@I', len(encodedContent)) | ||
return {'length': encodedLength, 'content': encodedContent} | ||
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# Send an encoded message to stdout | ||
def sendMessage(encodedMessage): | ||
sys.stdout.buffer.write(encodedMessage['length']) | ||
sys.stdout.buffer.write(encodedMessage['content']) | ||
sys.stdout.buffer.flush() | ||
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# Encode a message for transmission, | ||
# given its content. | ||
def encodeMessage(messageContent): | ||
encodedContent = json.dumps(messageContent) | ||
encodedLength = struct.pack('@I', len(encodedContent)) | ||
return {'length': encodedLength, 'content': encodedContent} | ||
while True: | ||
receivedMessage = getMessage() | ||
if receivedMessage == "ping": | ||
sendMessage(encodeMessage("pong3")) | ||
except AttributeError: | ||
# Python 2.x version (if sys.stdin.buffer is not defined) | ||
# Read a message from stdin and decode it. | ||
def getMessage(): | ||
rawLength = sys.stdin.read(4) | ||
if len(rawLength) == 0: | ||
sys.exit(0) | ||
messageLength = struct.unpack('@I', rawLength)[0] | ||
message = sys.stdin.read(messageLength) | ||
return json.loads(message) | ||
|
||
# Encode a message for transmission, | ||
# given its content. | ||
def encodeMessage(messageContent): | ||
encodedContent = json.dumps(messageContent) | ||
encodedLength = struct.pack('@I', len(encodedContent)) | ||
return {'length': encodedLength, 'content': encodedContent} | ||
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# Send an encoded message to stdout | ||
def sendMessage(encodedMessage): | ||
sys.stdout.write(encodedMessage['length']) | ||
sys.stdout.write(encodedMessage['content']) | ||
sys.stdout.flush() | ||
# Send an encoded message to stdout | ||
def sendMessage(encodedMessage): | ||
sys.stdout.write(encodedMessage['length']) | ||
sys.stdout.write(encodedMessage['content']) | ||
sys.stdout.flush() | ||
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while True: | ||
receivedMessage = getMessage() | ||
if receivedMessage == 'ping': | ||
sendMessage(encodeMessage('pong')) | ||
while True: | ||
receivedMessage = getMessage() | ||
if receivedMessage == "ping": | ||
sendMessage(encodeMessage("pong2")) |