Created
March 15, 2012 00:05
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Parse SDP to JSON in Coffee
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parseSDP = (text) -> | |
return if not text | |
lines = text.split('\r\n') | |
readSession lines | |
readSession = (lines) -> | |
session = {} | |
line = null | |
while line = lines.shift() | |
name = line.charAt(0) | |
value = line.slice(2) | |
if name is 'a' or name is 'b' | |
(session[name] ?= []).push value | |
else if name is 't' | |
(session.t ?= []).push readTime lines, { t: value } | |
else if name is 'm' | |
(session.m ?= []).push readMedia lines, { m: value } | |
else if name | |
session[name] = value | |
session | |
readTime = (lines, entry) -> | |
line = null | |
while line = lines.shift() | |
if line.charAt(0) is 'r' | |
(entry.r ?= []).push line.slice(2) | |
else | |
lines.unshift line | |
break | |
entry | |
readMedia = (lines, entry) -> | |
line = null | |
while line = lines.shift() | |
name = line.charAt(0) | |
value = line.slice(2) | |
if name is 'm' | |
lines.unshift line | |
break | |
else if name is 'a' or name is 'b' | |
(entry[name] ?= []).push value | |
else if name | |
entry[name] = value | |
entry |
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