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+;; Copyright (c) James Reeves. All rights reserved.
+;; The use and distribution terms for this software are covered by the Eclipse
+;; Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php) which
+;; can be found in the file epl-v10.html at the root of this distribution. By
+;; using this software in any fashion, you are agreeing to be bound by the
+;; terms of this license. You must not remove this notice, or any other, from
+;; this software.
+
+(ns compojure.str-utils
+  "Utility functions for manipulating strings."
+  (:use clojure.contrib.seq-utils
+        clojure.contrib.str-utils)
+  (:import clojure.lang.Named))
+
+(defn escape
+  "Returns a string with each occurance of a character in
+  chars escaped."
+  [chars #^String string]
+  (let [charset (set chars)]
+    (apply str
+      (mapcat
+        #(if (contains? charset %) [\\ %] [%])
+        string))))
+
+(defn map-str
+  "Map a function to a collection, then concatenate the results into a
+  string."
+  [func coll]
+  (apply str (map func coll)))
+
+(defn indent
+  "Indent each line in a string of text. Defaults to an indentation of two
+  spaces."
+  ([text]
+    (indent text "  "))
+  ([text spacer]
+    (map-str
+      #(str spacer % "\n")
+       (re-split #"\n" text))))
+
+(defn str*
+  "A version of str that prefers the names of Named objects.
+  e.g (str \"Hello \" :World)  => \"Hello :World\"
+      (str* \"Hello \" :World) => \"Hello World\""
+  [& args] 
+  (map-str
+    #(if (instance? Named %) (name %) (str %))
+    args))
+
+(defn re-escape
+  "Escape all special regex chars in string."
+  [string]
+  (escape "\\.*+|?()[]{}$^" string))
+
+(defn re-groups*
+  "More consistant re-groups that always returns a vector of groups, even if
+  there is only one group."
+  [matcher]
+  (for [i (range (.groupCount matcher))]
+    (.group matcher (inc i))))
+
+(defn blank?
+  "True if s = \"\" or nil"
+  [s]
+  (or (nil? s) (= s "")))
+
+(defn lines
+  "Concatenate a sequence of strings into lines of a single string."
+  [coll]
+  (str-join "\n" coll))
+
+(defn capitalize
+  "Uppercase the first letter of a string, and lowercase the rest."
+  [s]
+  (str (.toUpperCase (subs s 0 1))
+       (.toLowerCase (subs s 1))))
+
+(defn grep
+  "Filter a collection of strings by a regex."
+  [re coll]
+  (filter (partial re-find re) coll))
+
+(defn upcase-name
+  "Upcase a symbol or keyword's name."
+  [sym]
+  (. (name sym) toUpperCase))