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(* Module: Rx Generic regexps to build lenses Author: Raphael Pinson <raphink@gmail.com> About: License This file is licensed under the LGPL v2+, like the rest of Augeas. *) module Rx = (* Group: Spaces *) (* Variable: space A mandatory space or tab *) let space = /[ \t]+/ (* Variable: opt_space An optional space or tab *) let opt_space = /[ \t]*/ (* Variable: cl A continued line with a backslash *) let cl = /[ \t]*\\\\\n[ \t]*/ (* Variable: cl_or_space A <cl> or a <space> *) let cl_or_space = cl | space (* Variable: cl_or_opt_space A <cl> or a <opt_space> *) let cl_or_opt_space = cl | opt_space (* Group: General strings *) (* Variable: space_in A string which not starting or ending with a space *) let space_in = /[^ \r\t\n].*[^ \r\t\n]|[^ \t\n\r]/ (* Variable: no_spaces A string with no spaces *) let no_spaces = /[^ \t\r\n]+/ (* Variable: word An alphanumeric string *) let word = /[A-Za-z0-9_.-]+/ (* Variable: integer One or more digits *) let integer = /[0-9]+/ (* Variable: relinteger A relative <integer> *) let relinteger = /[-+]?[0-9]+/ (* Variable: relinteger_noplus A relative <integer>, without explicit plus sign *) let relinteger_noplus = /[-]?[0-9]+/ (* Variable: decimal A decimal value (using ',' or '.' as a separator) *) let decimal = /[0-9]+([.,][0-9]+)?/ (* Variable: reldecimal A relative <decimal> *) let reldecimal = /[+-]?[0-9]+([.,][0-9]+)?/ (* Variable: byte A byte (0 - 255) *) let byte = /25[0-5]?|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9]/ (* Variable: hex A hex value *) let hex = /0x[0-9a-fA-F]+/ (* Variable: octal An octal value *) let octal = /0[0-7]+/ (* Variable: fspath A filesystem path *) let fspath = /[^ \t\n]+/ (* Group: All but... *) (* Variable: neg1 Anything but a space, a comma or a comment sign *) let neg1 = /[^,# \n\t]+/ (* * Group: IPs * Cf. http://blog.mes-stats.fr/2008/10/09/regex-ipv4-et-ipv6/ (in fr) *) (* Variable: ipv4 *) let ipv4 = let dot = "." in byte . dot . byte . dot . byte . dot . byte (* Variable: ipv6 *) let ipv6 = /(([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})/ | /(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})/ | /(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})/ | /(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})/ | /(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})/ | /(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})/ | ( /([0-9A-Fa-f]{1,4}:){6}/ . /((((25[0-5])|(1[0-9]{2})|(2[0-4][0-9])|([0-9]{1,2})))\.){3}/ . /(((25[0-5])|(1[0-9]{2})|(2[0-4][0-9])|([0-9]{1,2})))/ ) | ( /([0-9A-Fa-f]{1,4}:){0,5}:/ . /((((25[0-5])|(1[0-9]{2})|(2[0-4][0-9])|([0-9]{1,2})))\.){3}/ . /(((25[0-5])|(1[0-9]{2})|(2[0-4][0-9])|([0-9]{1,2})))/ ) | ( /::([0-9A-Fa-f]{1,4}:){0,5}/ . /((((25[0-5])|(1[0-9]{2})|(2[0-4][0-9])|([0-9]{1,2})))\.){3}/ . /(((25[0-5])|(1[0-9]{2})|(2[0-4][0-9])|([0-9]{1,2})))/ ) | ( /[0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}/ . /[0-9A-Fa-f]{1,4}/ ) | /(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})/ | /(([0-9A-Fa-f]{1,4}:){1,7}:)/ (* Variable: ip An <ipv4> or <ipv6> *) let ip = ipv4 | ipv6 (* Variable: hostname A valid RFC 1123 hostname *) let hostname = /(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*( [A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])/ (* * Variable: device_name * A Linux device name like eth0 or i2c-0. Might still be too restrictive *) let device_name = /[a-zA-Z0-9_?.+:!-]+/ (* * Variable: email_addr * To be refined *) let email_addr = /[A-Za-z0-9_+.-]+@[A-Za-z0-9_.-]+/ (* * Variable: iso_8601 * ISO 8601 date time format *) let year = /[0-9]{4}/ let relyear = /[-+]?/ . year let monthday = /W?[0-9]{2}(-?[0-9]{1,2})?/ let time = let sep = /[T \t]/ in let digits = /[0-9]{2}(:?[0-9]{2}(:?[0-9]{2})?)?/ in let precis = /[.,][0-9]+/ in let zone = "Z" | /[-+]?[0-9]{2}(:?[0-9]{2})?/ in sep . digits . precis? . zone? let iso_8601 = year . ("-"? . monthday . time?)?