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Diffstat (limited to 'modules/caddyhttp/map/caddyfile.go')
-rw-r--r-- | modules/caddyhttp/map/caddyfile.go | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/modules/caddyhttp/map/caddyfile.go b/modules/caddyhttp/map/caddyfile.go new file mode 100644 index 0000000..5737971 --- /dev/null +++ b/modules/caddyhttp/map/caddyfile.go @@ -0,0 +1,71 @@ +// Copyright 2015 Matthew Holt and The Caddy Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package maphandler + +import ( + "github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile" + "github.com/caddyserver/caddy/v2/modules/caddyhttp" +) + +func init() { + httpcaddyfile.RegisterHandlerDirective("map", parseCaddyfile) +} + +// parseCaddyfile sets up the handler for a map from Caddyfile tokens. Syntax: +// +// map <source> <dest> { +// [default <default>] - used if not match is found +// [<regexp> <replacement>] - regular expression to match against the source find and the matching replacement value +// ... +// } +// +// The map takes a source variable and maps it into the dest variable. The mapping process +// will check the source variable for the first successful match against a list of regular expressions. +// If a successful match is found the dest variable will contain the replacement value. +// If no successful match is found and the default is specified then the dest will contain the default value. +// +func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) { + m := new(Handler) + + for h.Next() { + // first see if source and dest are configured + if h.NextArg() { + m.Source = h.Val() + if h.NextArg() { + m.Destination = h.Val() + } + } + + // load the rules + for h.NextBlock(0) { + expression := h.Val() + if expression == "default" { + args := h.RemainingArgs() + if len(args) != 1 { + return m, h.ArgErr() + } + m.Default = args[0] + } else { + args := h.RemainingArgs() + if len(args) != 1 { + return m, h.ArgErr() + } + m.Items = append(m.Items, Item{Expression: expression, Value: args[0]}) + } + } + } + + return m, nil +} |