ruby--ruby/enc/trans/escape.trans

#include "transcode_data.h"

<%
  def str1(str)
    str.unpack("H*")[0]
  end

  map_amp = {}
  map_amp["{00-25,27-FF}"] = :nomap
  map_amp["26"] = str1("&amp;")
  transcode_generate_node(ActionMap.parse(map_amp), "escape_amp_as_chref")

  map_xml_text = {}
  map_xml_text["{00-25,27-3B,3D,3F-FF}"] = :nomap
  map_xml_text["26"] = str1("&amp;")
  map_xml_text["3C"] = str1("&lt;")
  map_xml_text["3E"] = str1("&gt;")
  transcode_generate_node(ActionMap.parse(map_xml_text), "escape_xml_text")

  map_xml_attr_content = {}
  map_xml_attr_content["{00-21,23-25,27-3B,3D,3F-FF}"] = :nomap
  map_xml_attr_content["22"] = str1("&quot;")
  map_xml_attr_content["26"] = str1("&amp;")
  map_xml_attr_content["3C"] = str1("&lt;")
  map_xml_attr_content["3E"] = str1("&gt;")
  transcode_generate_node(ActionMap.parse(map_xml_attr_content), "escape_xml_attr_content")

  map_xml_attr_quote = {}
  map_xml_attr_quote["{00-FF}"] = :func_so
  transcode_generate_node(ActionMap.parse(map_xml_attr_quote), "escape_xml_attr_quote")
%>

<%= transcode_generated_code %>

static const rb_transcoder
rb_escape_amp_as_chref = {
    "", "amp-escaped", escape_amp_as_chref,
    TRANSCODE_TABLE_INFO,
    1, /* input_unit_length */
    1, /* max_input */
    5, /* max_output */
    stateless_converter, /* stateful_type */
    0, NULL, NULL,
    NULL, NULL, NULL, NULL
};

static const rb_transcoder
rb_escape_xml_text = {
    "", "xml-text-escaped", escape_xml_text,
    TRANSCODE_TABLE_INFO,
    1, /* input_unit_length */
    1, /* max_input */
    5, /* max_output */
    stateless_converter, /* stateful_type */
    0, NULL, NULL,
    NULL, NULL, NULL, NULL
};

static const rb_transcoder
rb_escape_xml_attr_content = {
    "", "xml-attr-content-escaped", escape_xml_attr_content,
    TRANSCODE_TABLE_INFO,
    1, /* input_unit_length */
    1, /* max_input */
    6, /* max_output */
    stateless_converter, /* stateful_type */
    0, NULL, NULL,
    NULL, NULL, NULL, NULL
};

#define END 0
#define NORMAL  1

static int
escape_xml_attr_quote_init(void *statep)
{
    unsigned char *sp = statep;
    *sp = END;
    return 0;
}

static int
fun_so_escape_xml_attr_quote(void *statep, const unsigned char *s, size_t l, unsigned char *o)
{
    unsigned char *sp = statep;
    int n = 0;
    if (*sp == END) {
        *sp = NORMAL;
        o[n++] = '"';
    }
    o[n++] = s[0];
    return n;
}

static int
escape_xml_attr_quote_finish(void *statep, unsigned char *o)
{
    unsigned char *sp = statep;
    int n = 0;

    if (*sp == END) {
        o[n++] = '"';
    }

    o[n++] = '"';
    *sp = END;

    return n;
}

static const rb_transcoder
rb_escape_xml_attr_quote = {
    "", "xml-attr-quoted", escape_xml_attr_quote,
    TRANSCODE_TABLE_INFO,
    1, /* input_unit_length */
    1, /* max_input */
    7, /* max_output */
    stateful_encoder, /* stateful_type */
    1, escape_xml_attr_quote_init, escape_xml_attr_quote_init,
    NULL, NULL, NULL, fun_so_escape_xml_attr_quote,
    escape_xml_attr_quote_finish
};

void
Init_escape(void)
{
    rb_register_transcoder(&rb_escape_amp_as_chref);
    rb_register_transcoder(&rb_escape_xml_text);
    rb_register_transcoder(&rb_escape_xml_attr_content);
    rb_register_transcoder(&rb_escape_xml_attr_quote);
}