diff options
Diffstat (limited to 'lulua/util.py')
| -rw-r--r-- | lulua/util.py | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/lulua/util.py b/lulua/util.py index dd35c23..1e2156d 100644 --- a/lulua/util.py +++ b/lulua/util.py @@ -22,11 +22,12 @@ Misc utilities """ -import os, yaml, pkg_resources +import os, yaml, pkg_resources, unicodedata first = lambda x: next (iter (x)) def limit (l, n): + """ Limit the number of items drawn from iterable l to n. """ it = iter (l) for i in range (n): yield next (it) @@ -65,3 +66,23 @@ class YamlLoader: for res in pkg_resources.resource_listdir (__package__, self.defaultDir): yield self.__getitem__ (res, onlyRes=True) +def displayText (text): + """ Convert text into a string that is always renderable without combining, + control or invisible characters """ + if text is None: + return text + if len (text) == 1 and unicodedata.combining (text) != 0: + # add circle if combining + return '\u25cc' + text + invMap = { + '\t': '⭾', + '\n': '↳', + ' ': '\u2423', + '\u200e': '[LRM]', # left to right mark + '\u061c': '[ALM]', # arabic letter mark + '\u202c': '[PDF]', # pop directional formatting + "\u2066": '[LRI]', # left-to-right isolate (lri) + "\u2067": '[RLI]', # right-to-left isolate (rli) + "\u2069": '[PDI]', # pop directional isolate (pdi) + } + return invMap.get (text, text) |