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authorGravatar Adam Chlipala <adam@chlipala.net>2011-11-05 15:05:13 -0400
committerGravatar Adam Chlipala <adam@chlipala.net>2011-11-05 15:05:13 -0400
commit954936dd180e34b79baca71e43d55a204dda9594 (patch)
treebb624710b05d07871646fc5a93a9b7014d5874dd /xml/parse.sml
parent22d36c8605e1d006a379350e28a5f939f7082546 (diff)
Support the full set of XHTML character entities
Diffstat (limited to 'xml/parse.sml')
-rw-r--r--xml/parse.sml77
1 files changed, 77 insertions, 0 deletions
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+(* Copyright (c) 2011, Adam Chlipala
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * - The names of contributors may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *)
+
+(* Building SML code from XML entity tables *)
+
+fun main () =
+ let
+ fun doFile fname =
+ let
+ val inf = TextIO.openIn fname
+
+ fun loop () =
+ case TextIO.inputLine inf of
+ NONE => TextIO.closeIn inf
+ | SOME line =>
+ if String.isPrefix "<!ENTITY " line then
+ case String.tokens (fn ch => Char.isSpace ch orelse ch = #">") line of
+ "<!ENTITY" :: ent :: exp :: _ =>
+ let
+ val exp = if String.isPrefix "\"&#" exp andalso String.isSuffix ";\"" exp then
+ let
+ val middle = String.substring (exp, 3, size exp - 5)
+ in
+ if CharVector.all Char.isDigit middle then
+ middle
+ else if String.isPrefix "38;#" middle then
+ String.extract (middle, 4, NONE)
+ else
+ raise Fail "Bad entity expression [1]"
+ end
+ else
+ raise Fail "Bad entity expansion [2]"
+ in
+ print ("\t\t(\"" ^ ent ^ "\", " ^ exp ^ "),\n");
+ loop ()
+ end
+ | _ => raise Fail "Bad ENTITY line"
+ else
+ loop ()
+ in
+ loop ()
+ end
+ in
+ print "structure Entities = struct\n";
+ print "\tval all = [\n";
+ doFile "xml/xhtml-lat1.ent";
+ doFile "xml/xhtml-special.ent";
+ doFile "xml/xhtml-symbol.ent";
+ print "\t(\"\", 0)]\n";
+ print "end\n"
+ end
+
+val () = main ()