javascript regex for extracting filename from Content-Disposition header
You could try something in this spirit:
filename[^;=\n]*=((['"]).*?\2|[^;\n]*)
filename # match filename, followed by
[^;=\n]* # anything but a ;, a = or a newline
=
( # first capturing group
(['"]) # either single or double quote, put it in capturing group 2
.*? # anything up until the first...
\2 # matching quote (single if we found single, double if we find double)
| # OR
[^;\n]* # anything but a ; or a newline
)
Your filename is in the first capturing group: http://regex101.com/r/hJ7tS6
Slightly modified to match my use case (strips all quotes and UTF tags)
filename\*?=['"]?(?:UTF-\d['"]*)?([^;\r\n"']*)['"]?;?
https://regex101.com/r/UhCzyI/3