class String
Public Instance Methods
fast_xs()
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escapes strings for XML The double-quote (“) character is translated to ”"“
static VALUE fast_xs(VALUE self)
{
long i;
VALUE array;
char *c;
size_t s_len;
VALUE *tmp;
VALUE rv;
array = rb_rescue(unpack_utf8, self, unpack_uchar, self);
for (tmp = RARRAY_PTR(array), s_len = i = RARRAY_LEN(array);
--i >= 0;
tmp++) {
int n = NUM2INT(*tmp);
if (likely(n < 128)) {
if (unlikely(n == '"'))
s_len += (sizeof(""") - 2);
if (unlikely(n == '&'))
s_len += (sizeof("&") - 2);
if (unlikely(n == '>' || n == '<'))
s_len += (sizeof(">") - 2);
continue;
}
CP_1252_ESCAPE(n);
if (VALID_VALUE(n))
s_len += bytes_for(n) - 1;
}
rv = rb_str_new(NULL, s_len);
ASSOCIATE_INDEX(rv, rb_default_external_encoding());
c = RSTRING_PTR(rv);
for (tmp = RARRAY_PTR(array), i = RARRAY_LEN(array); --i >= 0; tmp++)
c += escape(c, NUM2INT(*tmp));
return rv;
}