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Modified linkify to accept a callable for extra_params. This allows different params based for each link, for example to treat internal and external links differently

This commit is contained in:
Jason Choy 2012-05-06 13:22:40 +01:00
parent 50244877b5
commit 53e7c751c3
1 changed files with 13 additions and 3 deletions
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16
tornado/escape.py
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@ -246,8 +246,15 @@ def linkify(text, shorten=False, extra_params="",
shorten: Long urls will be shortened for display.
extra_params: Extra text to include in the link tag,
extra_params: Extra text to include in the link tag, or a callable
taking the link as an argument and returning the extra text
e.g. linkify(text, extra_params='rel="nofollow" class="external"')
or def extra_params_cb(url):
if url.startswith("http://example.com"):
return 'class="internal"'
else:
return 'class="external" rel="nofollow"'
linkify(text, extra_params=extra_params_cb)
require_protocol: Only linkify urls which include a protocol. If this is
False, urls such as www.facebook.com will also be linkified.
@ -256,7 +263,7 @@ def linkify(text, shorten=False, extra_params="",
e.g. linkify(text, permitted_protocols=["http", "ftp", "mailto"]).
It is very unsafe to include protocols such as "javascript".
"""
if extra_params:
if extra_params and not callable(extra_params):
extra_params = " " + extra_params.strip()
def make_link(m):
@ -272,7 +279,10 @@ def linkify(text, shorten=False, extra_params="",
if not proto:
href = "http://" + href # no proto specified, use http
params = extra_params
if callable(extra_params):
params = " " + extra_params(href).strip()
else:
params = extra_params
# clip long urls. max_len is just an approximation
max_len = 30