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# Written by Aleksey Cheusov <vle@gmx.net>, public domain
#
# This awk module is a part of RunAWK distribution,
# http://sourceforge.net/projects/runawk
#
############################################################
# =head2 glob.awk
#
# =over 2
#
# =item I<glob2ere (PATTERN)>
#
# convert glob PATTERN
# (http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_13)
# to equivalent extended regular expression
# (http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04)
#
# =back
#
#use "multisub.awk"
BEGIN {
__g2e="^:\\^ $:[$] (:[(] ):[)] {:[{] }:[}]"
__g2e=__g2e " \\[([^\\[\\]]|\\\\\\[|\\\\\\])*\\]:& .:[.] *:.* +:[+]"
__g2e=__g2e " ?:. |:[|] \\\\:\\\\"
__g2e=__g2e " \\^:\\^ \\$:[$] \\(:[(] \\):[)] \\{:[{] \\}:[}]"
__g2e=__g2e " \\[:\\[ \\]:\\] \\.:[.] \\*:[*] \\+:[+] \\?:[?]"
__g2e=__g2e " \\|:[|] \\:"
}
function glob2ere (p){
return multisub(p, __g2e, "&")
}
function glob (s, p, re){
if (p in __runawk_glob2ere)
re = __runawk_glob2ere [p]
else
re = __runawk_glob2ere [p] = ("^" glob2ere(p) "$")
return s ~ re
}
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