module Ox

Description:

Ox handles XML documents in two ways. It is a generic XML parser and writer as well as a fast Object / XML marshaller. Ox was written for speed as a replacement for Nokogiri and for Marshal.

As an XML parser it is 2 or more times faster than Nokogiri and as a generic XML writer it is 14 times faster than Nokogiri. Of course different files may result in slightly different times.

As an Object serializer Ox is 4 times faster than the standard Ruby Marshal.dump(). Ox is 3 times faster than Marshal.load().

Object Dump Sample:

require 'ox'

class Sample
  attr_accessor :a, :b, :c

  def initialize(a, b, c)
    @a = a
    @b = b
    @c = c
  end
end

# Create Object
obj = Sample.new(1, "bee", ['x', :y, 7.0])
# Now dump the Object to an XML String.
xml = Ox.dump(obj)
# Convert the object back into a Sample Object.
obj2 = Ox.parse_obj(xml)

Generic XML Writing and Parsing:

require 'ox'

doc = Ox::Document.new(:version => '1.0')

top = Ox::Element.new('top')
top[:name] = 'sample'
doc << top

mid = Ox::Element.new('middle')
mid[:name] = 'second'
top << mid

bot = Ox::Element.new('bottom')
bot[:name] = 'third'
mid << bot

xml = Ox.dump(doc)
puts xml
doc2 = Ox.parse(xml)
puts "Same? #{doc == doc2}"

Constants

VERSION

Current version of the module.

Public Class Methods

default_options() → Hash click to toggle source

Returns the default load and dump options as a Hash. The options are

  • :margin [String] left margin to inset when dumping

  • :indent [Fixnum] number of spaces to indent each element in an XML document

  • :trace [Fixnum] trace level where 0 is silent

  • :encoding [String] character encoding for the XML file

  • :with_dtd [true|false|nil] include DTD in the dump

  • :with_instruct [true|false|nil] include instructions in the dump

  • :with_xml [true|false|nil] include XML prolog in the dump

  • :circular [true|false|nil] support circular references while dumping

  • :xsd_date [true|false|nil] use XSD date format instead of decimal format

  • :mode [:object|:generic|:limited|:hash|:hash_no_attrs|nil] load method to use for XML

  • :effort [:strict|:tolerant|:auto_define] set the tolerance level for loading

  • :symbolize_keys [true|false|nil] symbolize element attribute keys or leave as Strings

  • :element_key_mod [Proc|nil] converts element keys on parse if not nil

  • :attr_key_mod [Proc|nil] converts attribute keys on parse if not nil

  • :skip [:skip_none|:skip_return|:skip_white|:skip_off] determines how to handle white space in text

  • :smart [true|false|nil] flag indicating the SAX parser uses hints if available (use with html)

  • :convert_special [true|false|nil] flag indicating special characters like &lt; are converted with the SAX parser

  • :invalid_replace [nil|String] replacement string for invalid XML characters on dump. nil indicates include anyway as hex. A string, limited to 10 characters will replace the invalid character with the replace.

  • :no_empty [true|false|nil] flag indicating there should be no empty elements in a dump

  • :strip_namespace [String|true|false] false or “” results in no namespace stripping. A string of “*” or true will strip all namespaces. Any other non-empty string indicates that matching namespaces will be stripped.

  • :overlay [Hash] a Hash of keys that match html element names and values that are one of

    • :active - make the normal callback for the element

    • :nest_ok - active but the nesting check is ignored

    • :inactive - do not make the element start, end, or attribute callbacks for this element only

    • :block - block this and all children callbacks

    • :off - block this element and it's children unless the child element is active

    • :abort - abort the html processing and return

return [Hash] all current option settings.

Note that an indent of less than zero will result in a tight one line output unless the text in the XML fields contain new line characters.

static VALUE
get_def_opts(VALUE self) {
    VALUE       opts = rb_hash_new();
    int         elen = (int)strlen(ox_default_options.encoding);

    rb_hash_aset(opts, ox_encoding_sym, (0 == elen) ? Qnil : rb_str_new(ox_default_options.encoding, elen));
    rb_hash_aset(opts, margin_sym, rb_str_new(ox_default_options.margin, ox_default_options.margin_len));
    rb_hash_aset(opts, ox_indent_sym, INT2FIX(ox_default_options.indent));
    rb_hash_aset(opts, trace_sym, INT2FIX(ox_default_options.trace));
    rb_hash_aset(opts, with_dtd_sym, (Yes == ox_default_options.with_dtd) ? Qtrue : ((No == ox_default_options.with_dtd) ? Qfalse : Qnil));
    rb_hash_aset(opts, with_xml_sym, (Yes == ox_default_options.with_xml) ? Qtrue : ((No == ox_default_options.with_xml) ? Qfalse : Qnil));
    rb_hash_aset(opts, with_instruct_sym, (Yes == ox_default_options.with_instruct) ? Qtrue : ((No == ox_default_options.with_instruct) ? Qfalse : Qnil));
    rb_hash_aset(opts, circular_sym, (Yes == ox_default_options.circular) ? Qtrue : ((No == ox_default_options.circular) ? Qfalse : Qnil));
    rb_hash_aset(opts, xsd_date_sym, (Yes == ox_default_options.xsd_date) ? Qtrue : ((No == ox_default_options.xsd_date) ? Qfalse : Qnil));
    rb_hash_aset(opts, symbolize_keys_sym, (Yes == ox_default_options.sym_keys) ? Qtrue : ((No == ox_default_options.sym_keys) ? Qfalse : Qnil));
    rb_hash_aset(opts, attr_key_mod_sym, ox_default_options.attr_key_mod);
    rb_hash_aset(opts, element_key_mod_sym, ox_default_options.element_key_mod);
    rb_hash_aset(opts, smart_sym, (Yes == ox_default_options.smart) ? Qtrue : ((No == ox_default_options.smart) ? Qfalse : Qnil));
    rb_hash_aset(opts, convert_special_sym, (ox_default_options.convert_special) ? Qtrue : Qfalse);
    rb_hash_aset(opts, no_empty_sym, (ox_default_options.no_empty) ? Qtrue : Qfalse);
    switch (ox_default_options.mode) {
    case ObjMode:               rb_hash_aset(opts, mode_sym, object_sym);            break;
    case GenMode:               rb_hash_aset(opts, mode_sym, generic_sym);           break;
    case LimMode:               rb_hash_aset(opts, mode_sym, limited_sym);           break;
    case HashMode:              rb_hash_aset(opts, mode_sym, hash_sym);                     break;
    case HashNoAttrMode:        rb_hash_aset(opts, mode_sym, hash_no_attrs_sym);       break;
    case NoMode:
    default:                    rb_hash_aset(opts, mode_sym, Qnil);                      break;
    }
    switch (ox_default_options.effort) {
    case StrictEffort:          rb_hash_aset(opts, effort_sym, strict_sym);             break;
    case TolerantEffort:        rb_hash_aset(opts, effort_sym, tolerant_sym);          break;
    case AutoEffort:            rb_hash_aset(opts, effort_sym, auto_define_sym);  break;
    case NoEffort:
    default:                    rb_hash_aset(opts, effort_sym, Qnil);                    break;
    }
    switch (ox_default_options.skip) {
    case OffSkip:               rb_hash_aset(opts, skip_sym, skip_off_sym);          break;
    case NoSkip:                rb_hash_aset(opts, skip_sym, skip_none_sym);          break;
    case CrSkip:                rb_hash_aset(opts, skip_sym, skip_return_sym);                break;
    case SpcSkip:               rb_hash_aset(opts, skip_sym, skip_white_sym);                break;
    default:                    rb_hash_aset(opts, skip_sym, Qnil);                      break;
    }
    if (Yes == ox_default_options.allow_invalid) {
        rb_hash_aset(opts, invalid_replace_sym, Qnil);
    } else {
        rb_hash_aset(opts, invalid_replace_sym, rb_str_new(ox_default_options.inv_repl + 1, (int)*ox_default_options.inv_repl));
    }
    if ('\0' == *ox_default_options.strip_ns) {
        rb_hash_aset(opts, strip_namespace_sym, Qfalse);
    } else if ('*' == *ox_default_options.strip_ns && '\0' == ox_default_options.strip_ns[1]) {
        rb_hash_aset(opts, strip_namespace_sym, Qtrue);
    } else {
        rb_hash_aset(opts, strip_namespace_sym, rb_str_new(ox_default_options.strip_ns, strlen(ox_default_options.strip_ns)));
    }
    if (NULL == ox_default_options.html_hints) {
        //rb_hash_aset(opts, overlay_sym, hints_to_overlay(ox_hints_html()));
        rb_hash_aset(opts, overlay_sym, Qnil);
    } else {
        rb_hash_aset(opts, overlay_sym, hints_to_overlay(ox_default_options.html_hints));
    }
    return opts;
}
default_options=(opts) click to toggle source

Sets the default options for load and dump.

  • opts [Hash] opts options to change

    • :margin [String] left margin to inset when dumping

    • :indent [Fixnum] number of spaces to indent each element in an XML document

    • :trace [Fixnum] trace level where 0 is silent

    • :encoding [String] character encoding for the XML file

    • :with_dtd [true|false|nil] include DTD in the dump

    • :with_instruct [true|false|nil] include instructions in the dump

    • :with_xml [true|false|nil] include XML prolog in the dump

    • :circular [true|false|nil] support circular references while dumping

    • :xsd_date [true|false|nil] use XSD date format instead of decimal format

    • :mode [:object|:generic|:limited|:hash|:hash_no_attrs|nil] load method to use for XML

    • :effort [:strict|:tolerant|:auto_define] set the tolerance level for loading

    • :symbolize_keys [true|false|nil] symbolize element attribute keys or leave as Strings

    • :element_key_mod [Proc|nil] converts element keys on parse if not nil

    • :attr_key_mod [Proc|nil] converts attribute keys on parse if not nil

    • :skip [:skip_none|:skip_return|:skip_white|:skip_off] determines how to handle white space in text

    • :smart [true|false|nil] flag indicating the SAX parser uses hints if available (use with html)

    • :invalid_replace [nil|String] replacement string for invalid XML characters on dump. nil indicates include anyway as hex. A string, limited to 10 characters will replace the invalid character with the replace.

    • :strip_namespace [nil|String|true|false] “” or false result in no namespace stripping. A string of “*” or true will strip all namespaces. Any other non-empty string indicates that matching namespaces will be stripped.

  • :overlay [Hash] a Hash of keys that match html element names and values that are one of

    • :active - make the normal callback for the element

    • :nest_ok - active but ignore nest check

    • :inactive - do not make the element start, end, or attribute callbacks for this element only

    • :block - block this and all children callbacks

    • :off - block this element and it's children unless the child element is active

    • :abort - abort the html processing and return

return [nil]

static VALUE
set_def_opts(VALUE self, VALUE opts) {
    struct _yesNoOpt    ynos[] = {
        { with_xml_sym, &ox_default_options.with_xml },
        { with_dtd_sym, &ox_default_options.with_dtd },
        { with_instruct_sym, &ox_default_options.with_instruct },
        { xsd_date_sym, &ox_default_options.xsd_date },
        { circular_sym, &ox_default_options.circular },
        { symbolize_keys_sym, &ox_default_options.sym_keys },
        { smart_sym, &ox_default_options.smart },
        { Qnil, 0 }
    };
    YesNoOpt    o;
    VALUE       v;

    Check_Type(opts, T_HASH);

    v = rb_hash_aref(opts, ox_encoding_sym);
    if (Qnil == v) {
        *ox_default_options.encoding = '\0';
    } else {
        Check_Type(v, T_STRING);
        strncpy(ox_default_options.encoding, StringValuePtr(v), sizeof(ox_default_options.encoding) - 1);
#if HAVE_RB_ENC_FIND
        ox_default_options.rb_enc = rb_enc_find(ox_default_options.encoding);
#endif
    }

    v = rb_hash_aref(opts, ox_indent_sym);
    if (Qnil != v) {
        Check_Type(v, T_FIXNUM);
        ox_default_options.indent = FIX2INT(v);
    }

    v = rb_hash_aref(opts, trace_sym);
    if (Qnil != v) {
        Check_Type(v, T_FIXNUM);
        ox_default_options.trace = FIX2INT(v);
    }

    v = rb_hash_aref(opts, mode_sym);
    if (Qnil == v) {
        ox_default_options.mode = NoMode;
    } else if (object_sym == v) {
        ox_default_options.mode = ObjMode;
    } else if (generic_sym == v) {
        ox_default_options.mode = GenMode;
    } else if (limited_sym == v) {
        ox_default_options.mode = LimMode;
    } else if (hash_sym == v) {
        ox_default_options.mode = HashMode;
    } else if (hash_no_attrs_sym == v) {
        ox_default_options.mode = HashNoAttrMode;
    } else {
        rb_raise(ox_parse_error_class, ":mode must be :object, :generic, :limited, :hash, :hash_no_attrs, or nil.\n");
    }

    v = rb_hash_aref(opts, effort_sym);
    if (Qnil == v) {
        ox_default_options.effort = NoEffort;
    } else if (strict_sym == v) {
        ox_default_options.effort = StrictEffort;
    } else if (tolerant_sym == v) {
        ox_default_options.effort = TolerantEffort;
    } else if (auto_define_sym == v) {
        ox_default_options.effort = AutoEffort;
    } else {
        rb_raise(ox_parse_error_class, ":effort must be :strict, :tolerant, :auto_define, or nil.\n");
    }

    v = rb_hash_aref(opts, skip_sym);
    if (Qnil == v) {
        ox_default_options.skip = NoSkip;
    } else if (skip_off_sym == v) {
        ox_default_options.skip = OffSkip;
    } else if (skip_none_sym == v) {
        ox_default_options.skip = NoSkip;
    } else if (skip_return_sym == v) {
        ox_default_options.skip = CrSkip;
    } else if (skip_white_sym == v) {
        ox_default_options.skip = SpcSkip;
    } else {
        rb_raise(ox_parse_error_class, ":skip must be :skip_none, :skip_return, :skip_white, :skip_off, or nil.\n");
    }

    v = rb_hash_lookup(opts, convert_special_sym);
    if (Qnil == v) {
        // no change
    } else if (Qtrue == v) {
        ox_default_options.convert_special = 1;
    } else if (Qfalse == v) {
        ox_default_options.convert_special = 0;
    } else {
        rb_raise(ox_parse_error_class, ":convert_special must be true or false.\n");
    }

    v = rb_hash_lookup(opts, no_empty_sym);
    if (Qnil == v) {
        // no change
    } else if (Qtrue == v) {
        ox_default_options.no_empty = 1;
    } else if (Qfalse == v) {
        ox_default_options.no_empty = 0;
    } else {
        rb_raise(ox_parse_error_class, ":no_empty must be true or false.\n");
    }

    v = rb_hash_aref(opts, invalid_replace_sym);
    if (Qnil == v) {
        ox_default_options.allow_invalid = Yes;
    } else {
        long   slen;

        Check_Type(v, T_STRING);
        slen = RSTRING_LEN(v);
        if (sizeof(ox_default_options.inv_repl) - 2 < (size_t)slen) {
            rb_raise(ox_parse_error_class, ":invalid_replace can be no longer than %d characters.",
                     (int)sizeof(ox_default_options.inv_repl) - 2);
        }
        strncpy(ox_default_options.inv_repl + 1, StringValuePtr(v), sizeof(ox_default_options.inv_repl) - 1);
        ox_default_options.inv_repl[sizeof(ox_default_options.inv_repl) - 1] = '\0';
        *ox_default_options.inv_repl = (char)slen;
        ox_default_options.allow_invalid = No;
    }

    v = rb_hash_aref(opts, strip_namespace_sym);
    if (Qfalse == v) {
        *ox_default_options.strip_ns = '\0';
    } else if (Qtrue == v) {
        *ox_default_options.strip_ns = '*';
        ox_default_options.strip_ns[1] = '\0';
    } else if (Qnil != v) {
        long   slen;

        Check_Type(v, T_STRING);
        slen = RSTRING_LEN(v);
        if (sizeof(ox_default_options.strip_ns) - 1 < (size_t)slen) {
            rb_raise(ox_parse_error_class, ":strip_namespace can be no longer than %d characters.",
                     (int)sizeof(ox_default_options.strip_ns) - 1);
        }
        strncpy(ox_default_options.strip_ns, StringValuePtr(v), sizeof(ox_default_options.strip_ns) - 1);
        ox_default_options.strip_ns[sizeof(ox_default_options.strip_ns) - 1] = '\0';
    }

    v = rb_hash_aref(opts, margin_sym);
    if (Qnil != v) {
        long   slen;

        Check_Type(v, T_STRING);
        slen = RSTRING_LEN(v);
        if (sizeof(ox_default_options.margin) - 1 < (size_t)slen) {
            rb_raise(ox_parse_error_class, ":margin can be no longer than %d characters.",
                     (int)sizeof(ox_default_options.margin) - 1);
        }
        strncpy(ox_default_options.margin, StringValuePtr(v), sizeof(ox_default_options.margin) - 1);
        ox_default_options.margin[sizeof(ox_default_options.margin) - 1] = '\0';
        ox_default_options.margin_len = strlen(ox_default_options.margin);
    }

    for (o = ynos; 0 != o->attr; o++) {
        v = rb_hash_lookup(opts, o->sym);
        if (Qnil == v) {
            *o->attr = NotSet;
        } else if (Qtrue == v) {
            *o->attr = Yes;
        } else if (Qfalse == v) {
            *o->attr = No;
        } else {
            rb_raise(ox_parse_error_class, "%s must be true or false.\n", rb_id2name(SYM2ID(o->sym)));
        }
    }
    v = rb_hash_aref(opts, overlay_sym);
    if (Qnil == v) {
        ox_hints_destroy(ox_default_options.html_hints);
        ox_default_options.html_hints = NULL;
    } else {
        int    cnt;

        Check_Type(v, T_HASH);
        cnt = (int)RHASH_SIZE(v);
        if (0 == cnt) {
            ox_hints_destroy(ox_default_options.html_hints);
            ox_default_options.html_hints = NULL;
        } else {
            ox_hints_destroy(ox_default_options.html_hints);
            ox_default_options.html_hints = ox_hints_dup(ox_hints_html());
            rb_hash_foreach(v, set_overlay, (VALUE)ox_default_options.html_hints);
        }
    }
    ox_default_options.element_key_mod = rb_hash_lookup2(opts, element_key_mod_sym, ox_default_options.element_key_mod);
    ox_default_options.attr_key_mod = rb_hash_lookup2(opts, attr_key_mod_sym, ox_default_options.attr_key_mod);

    return Qnil;
}
dump(obj, options) → xml-string click to toggle source

Dumps an Object (obj) to a string.

  • obj [Object] Object to serialize as an XML document String

  • options [Hash] formating options

    • :indent [Fixnum] format expected

    • :no_empty [true|false] if true don't output empty elements

    • :xsd_date [true|false] use XSD date format if true, default: false

    • :circular [true|false] allow circular references, default: false

    • *:strict|:tolerant]* [ :effort effort to use when an undumpable object (e.g., IO) is encountered, default: :strict

      • :strict - raise an NotImplementedError if an undumpable object is encountered

      • :tolerant - replaces undumplable objects with nil

Note that an indent of less than zero will result in a tight one line output unless the text in the XML fields contain new line characters.

static VALUE
dump(int argc, VALUE *argv, VALUE self) {
    char                *xml;
    struct _options     copts = ox_default_options;
    VALUE               rstr;

    if (2 == argc) {
        parse_dump_options(argv[1], &copts);
    }
    if (0 == (xml = ox_write_obj_to_str(*argv, &copts))) {
        rb_raise(rb_eNoMemError, "Not enough memory.\n");
    }
    rstr = rb_str_new2(xml);
#if HAVE_RB_ENC_ASSOCIATE
    if ('\0' != *copts.encoding) {
        rb_enc_associate(rstr, rb_enc_find(copts.encoding));
    }
#endif
    xfree(xml);

    return rstr;
}
load(xml, options) → Ox::Document or Ox::Element or Object click to toggle source

Parses and XML document String into an Ox::Document, or Ox::Element, or Object depending on the options. Raises an exception if the XML is malformed or the classes specified are not valid. If a block is given it will be called on the completion of each complete top level entity with that entity as it's only argument.

  • xml [String] XML String

  • options [Hash] load options

    • :mode [:object|:generic|:limited] format expected

      • :object - object format

      • :generic - read as a generic XML file

      • :limited - read as a generic XML file but with callbacks on text and elements events only

      • :hash - read and convert to a Hash and core class objects only

      • :hash_no_attrs - read and convert to a Hash and core class objects only without capturing attributes

    • :effort [:strict|:tolerant|:auto_define] effort to use when an undefined class is encountered, default: :strict

      • :strict - raise an NameError for missing classes and modules

      • :tolerant - return nil for missing classes and modules

      • :auto_define - auto define missing classes and modules

    • :trace [Fixnum] trace level as a Fixnum, default: 0 (silent)

    • :symbolize_keys [true|false|nil] symbolize element attribute keys or leave as Strings

    • :invalid_replace [nil|String] replacement string for invalid XML characters on dump. nil indicates include anyway as hex. A string, limited to 10 characters will replace the invalid character with the replace.

    • :strip_namespace [String|true|false] “” or false result in no namespace stripping. A string of “*” or true will strip all namespaces. Any other non-empty string indicates that matching namespaces will be stripped.

static VALUE
load_str(int argc, VALUE *argv, VALUE self) {
    char        *xml;
    size_t      len;
    VALUE       obj;
    VALUE       encoding;
    struct _err err;

    err_init(&err);
    Check_Type(*argv, T_STRING);
    /* the xml string gets modified so make a copy of it */
    len = RSTRING_LEN(*argv) + 1;
    if (SMALL_XML < len) {
        xml = ALLOC_N(char, len);
    } else {
        xml = ALLOCA_N(char, len);
    }
#if HAVE_RB_OBJ_ENCODING
    encoding = rb_obj_encoding(*argv);
#else
    encoding = Qnil;
#endif
    memcpy(xml, StringValuePtr(*argv), len);
    xml[len - 1] = '\0';
    obj = load(xml, len - 1, argc - 1, argv + 1, self, encoding, &err);
    if (SMALL_XML < len) {
        xfree(xml);
    }
    if (err_has(&err)) {
        ox_err_raise(&err);
    }
    return obj;
}
load_file(file_path, options) → Ox::Document or Ox::Element or Object click to toggle source

Parses and XML document from a file into an Ox::Document, or Ox::Element, or Object depending on the options. Raises an exception if the XML is malformed or the classes specified are not valid.

  • file_path [String] file path to read the XML document from

  • options [Hash] load options

    • :mode [:object|:generic|:limited] format expected

      • :object - object format

      • :generic - read as a generic XML file

      • :limited - read as a generic XML file but with callbacks on text and elements events only

      • :hash - read and convert to a Hash and core class objects only

      • :hash_no_attrs - read and convert to a Hash and core class objects only without capturing attributes

    • :effort [:strict|:tolerant|:auto_define] effort to use when an undefined class is encountered, default: :strict

      • :strict - raise an NameError for missing classes and modules

      • :tolerant - return nil for missing classes and modules

      • :auto_define - auto define missing classes and modules

    • :trace [Fixnum] trace level as a Fixnum, default: 0 (silent)

    • :symbolize_keys [true|false|nil] symbolize element attribute keys or leave as Strings

    • :invalid_replace [nil|String] replacement string for invalid XML characters on dump. nil indicates include anyway as hex. A string, limited to 10 characters will replace the invalid character with the replace.

    • :strip_namespace [String|true|false] “” or false result in no namespace stripping. A string of “*” or true will strip all namespaces. Any other non-empty string indicates that matching namespaces will be stripped.

static VALUE
load_file(int argc, VALUE *argv, VALUE self) {
    char        *path;
    char        *xml;
    FILE        *f;
    off_t       len;
    VALUE       obj;
    struct _err err;

    err_init(&err);
    Check_Type(*argv, T_STRING);
    path = StringValuePtr(*argv);
    if (0 == (f = fopen(path, "r"))) {
        rb_raise(rb_eIOError, "%s\n", strerror(errno));
    }
    fseek(f, 0, SEEK_END);
    len = ftello(f);
    if (SMALL_XML < len) {
        xml = ALLOC_N(char, len + 1);
    } else {
        xml = ALLOCA_N(char, len + 1);
    }
    fseek(f, 0, SEEK_SET);
    if ((size_t)len != fread(xml, 1, len, f)) {
        ox_err_set(&err, rb_eLoadError, "Failed to read %ld bytes from %s.\n", (long)len, path);
        obj = Qnil;
    } else {
        xml[len] = '\0';
        obj = load(xml, len, argc - 1, argv + 1, self, Qnil, &err);
    }
    fclose(f);
    if (SMALL_XML < len) {
        xfree(xml);
    }
    if (err_has(&err)) {
        ox_err_raise(&err);
    }
    return obj;
}
parse(xml) → Ox::Document or Ox::Element click to toggle source

Parses and XML document String into an Ox::Document or Ox::Element.

  • xml [String] xml XML String

return [Ox::Document or Ox::Element] parsed XML document.

raise [Exception] if the XML is malformed.

static VALUE
to_gen(VALUE self, VALUE ruby_xml) {
    char                *xml, *x;
    size_t              len;
    VALUE               obj;
    struct _options     options = ox_default_options;
    struct _err         err;

    err_init(&err);
    Check_Type(ruby_xml, T_STRING);
    /* the xml string gets modified so make a copy of it */
    len = RSTRING_LEN(ruby_xml) + 1;
    x = defuse_bom(StringValuePtr(ruby_xml), &options);
    if (SMALL_XML < len) {
        xml = ALLOC_N(char, len);
    } else {
        xml = ALLOCA_N(char, len);
    }
    memcpy(xml, x, len);
    obj = ox_parse(xml, len - 1, ox_gen_callbacks, 0, &options, &err);
    if (SMALL_XML < len) {
        xfree(xml);
    }
    if (err_has(&err)) {
        ox_err_raise(&err);
    }
    return obj;
}
parse_obj(xml) → Object click to toggle source

Parses an XML document String that is in the object format and returns an Object of the type represented by the XML. This function expects an optimized XML formated String. For other formats use the more generic Ox.load() method. Raises an exception if the XML is malformed or the classes specified in the file are not valid.

  • xml [String] XML String in optimized Object format.

return [Object] deserialized Object.

static VALUE
to_obj(VALUE self, VALUE ruby_xml) {
    char                *xml, *x;
    size_t              len;
    VALUE               obj;
    struct _options     options = ox_default_options;
    struct _err         err;

    err_init(&err);
    Check_Type(ruby_xml, T_STRING);
    /* the xml string gets modified so make a copy of it */
    len = RSTRING_LEN(ruby_xml) + 1;
    x = defuse_bom(StringValuePtr(ruby_xml), &options);
    if (SMALL_XML < len) {
        xml = ALLOC_N(char, len);
    } else {
        xml = ALLOCA_N(char, len);
    }
    memcpy(xml, x, len);
#ifdef RB_GC_GUARD
    rb_gc_disable();
#endif
    obj = ox_parse(xml, len - 1, ox_obj_callbacks, 0, &options, &err);
    if (SMALL_XML < len) {
        xfree(xml);
    }
#ifdef RB_GC_GUARD
    RB_GC_GUARD(obj);
    rb_gc_enable();
#endif
    if (err_has(&err)) {
        ox_err_raise(&err);
    }
    return obj;
}
sax_html(handler, io, options) click to toggle source

Parses an IO stream or file containing an XML document. Raises an exception if the XML is malformed or the classes specified are not valid.

  • handler [Ox::Sax] SAX (responds to OX::Sax methods) like handler

  • io [IO|String] IO Object to read from

  • options [Hash] options parse options

    • :convert_special [true|false] flag indicating special characters like &lt; are converted

    • :symbolize [true|false] flag indicating the parser symbolize element and attribute names

    • :skip [:skip_none|:skip_return|:skip_white|:skip_off] flag indicating the parser skips \r or collapse white space into a single space. Default (skip space)

    • :overlay [Hash] a Hash of keys that match html element names and values that are one of

      • :active - make the normal callback for the element

      • :nest_ok - active but ignore nest check

      • :inactive - do not make the element start, end, or attribute callbacks for this element only

      • :block - block this and all children callbacks

      • :off - block this element and it's children unless the child element is active

      • :abort - abort the html processing and return

static VALUE
sax_html(int argc, VALUE *argv, VALUE self) {
    struct _saxOptions  options;
    bool                free_hints = false;

    options.symbolize = (No != ox_default_options.sym_keys);
    options.convert_special = ox_default_options.convert_special;
    options.smart = true;
    options.skip = ox_default_options.skip;
    options.hints = ox_default_options.html_hints;
    if (NULL == options.hints) {
        options.hints = ox_hints_html();
    }
    *options.strip_ns = '\0';

    if (argc < 2) {
        rb_raise(ox_parse_error_class, "Wrong number of arguments to sax_html.\n");
    }
    if (3 <= argc && rb_cHash == rb_obj_class(argv[2])) {
        volatile VALUE h = argv[2];
        volatile VALUE v;

        if (Qnil != (v = rb_hash_lookup(h, convert_special_sym))) {
            options.convert_special = (Qtrue == v);
        }
        if (Qnil != (v = rb_hash_lookup(h, symbolize_sym))) {
            options.symbolize = (Qtrue == v);
        }
        if (Qnil != (v = rb_hash_lookup(h, skip_sym))) {
            if (skip_return_sym == v) {
                options.skip = CrSkip;
            } else if (skip_white_sym == v) {
                options.skip = SpcSkip;
            } else if (skip_none_sym == v) {
                options.skip = NoSkip;
            } else if (skip_off_sym == v) {
                options.skip = OffSkip;
            }
        }
        if (Qnil != (v = rb_hash_lookup(h, overlay_sym))) {
            int        cnt;

            Check_Type(v, T_HASH);
            cnt = (int)RHASH_SIZE(v);
            if (0 == cnt) {
                options.hints = ox_hints_html();
            } else {
                options.hints = ox_hints_dup(options.hints);
                free_hints = true;
                rb_hash_foreach(v, set_overlay, (VALUE)options.hints);
            }
        }
    }
    ox_sax_parse(argv[0], argv[1], &options);
    if (free_hints) {
        ox_hints_destroy(options.hints);
    }
    return Qnil;
}
sax_html_overlay() → Hash click to toggle source

Returns an overlay hash that can be modified and used as an overlay in the default options or in the sax_html() function call. Values for the keys are:

- _:active_ - make the normal callback for the element
- _:nest_ok_ - active but ignore nest check
- _:inactive_ - do not make the element start, end, or attribute callbacks for this element only
- _:block_ - block this and all children callbacks
- _:off_ - block this element and it's children unless the child element is active
- _:abort_ - abort the html processing and return

return [Hash] default SAX HTML settings

static VALUE
sax_html_overlay(VALUE self) {
    return hints_to_overlay(ox_hints_html());
}
sax_parse(handler, io, options) click to toggle source

Parses an IO stream or file containing an XML document. Raises an exception if the XML is malformed or the classes specified are not valid.

  • handler [Ox::Sax] SAX (responds to OX::Sax methods) like handler

  • io [IO|String] IO Object to read from

  • options [Hash] options parse options

    • :convert_special [true|false] flag indicating special characters like &lt; are converted

    • :symbolize [true|false] flag indicating the parser symbolize element and attribute names

    • :smart [true|false] flag indicating the parser uses hints if available (use with html)

    • :skip [:skip_none|:skip_return|:skip_white|:skip_off] flag indicating the parser skips \r or collpase white space into a single space. Default (skip space)

    • :strip_namespace [nil|String|true|false] “” or false result in no namespace stripping. A string of “*” or true will strip all namespaces. Any other non-empty string indicates that matching namespaces will be stripped.

static VALUE
sax_parse(int argc, VALUE *argv, VALUE self) {
    struct _saxOptions  options;

    options.symbolize = (No != ox_default_options.sym_keys);
    options.convert_special = ox_default_options.convert_special;
    options.smart = (Yes == ox_default_options.smart);
    options.skip = ox_default_options.skip;
    options.hints = NULL;
    strcpy(options.strip_ns, ox_default_options.strip_ns);

    if (argc < 2) {
        rb_raise(ox_parse_error_class, "Wrong number of arguments to sax_parse.\n");
    }
    if (3 <= argc && rb_cHash == rb_obj_class(argv[2])) {
        VALUE  h = argv[2];
        VALUE  v;

        if (Qnil != (v = rb_hash_lookup(h, convert_special_sym))) {
            options.convert_special = (Qtrue == v);
        }
        if (Qnil != (v = rb_hash_lookup(h, smart_sym))) {
            options.smart = (Qtrue == v);
        }
        if (Qnil != (v = rb_hash_lookup(h, symbolize_sym))) {
            options.symbolize = (Qtrue == v);
        }
        if (Qnil != (v = rb_hash_lookup(h, skip_sym))) {
            if (skip_return_sym == v) {
                options.skip = CrSkip;
            } else if (skip_white_sym == v) {
                options.skip = SpcSkip;
            } else if (skip_none_sym == v) {
                options.skip = NoSkip;
            } else if (skip_off_sym == v) {
                options.skip = OffSkip;
            }
        }
        if (Qnil != (v = rb_hash_lookup(h, strip_namespace_sym))) {
            if (Qfalse == v) {
                *options.strip_ns = '\0';
            } else if (Qtrue == v) {
                *options.strip_ns = '*';
                options.strip_ns[1] = '\0';
            } else {
                long  slen;

                Check_Type(v, T_STRING);
                slen = RSTRING_LEN(v);
                if (sizeof(options.strip_ns) - 1 <  (size_t)slen) {
                    rb_raise(ox_parse_error_class, ":strip_namespace can be no longer than %d characters.",
                             (int)sizeof(options.strip_ns) - 1);
                }
                strncpy(options.strip_ns, StringValuePtr(v), sizeof(options.strip_ns) - 1);
                options.strip_ns[sizeof(options.strip_ns) - 1] = '\0';
            }
        }
    }
    ox_sax_parse(argv[0], argv[1], &options);

    return Qnil;
}
to_file(file_path, obj, options) click to toggle source

Dumps an Object to the specified file.

  • file_path [String] file path to write the XML document to

  • obj [Object] Object to serialize as an XML document String

  • options [Hash] formating options

    • :indent [Fixnum] format expected

    • :xsd_date [true|false] use XSD date format if true, default: false

    • :circular [true|false] allow circular references, default: false

    • *:strict|:tolerant]* [ :effort effort to use when an undumpable object (e.g., IO) is encountered, default: :strict

      • :strict - raise an NotImplementedError if an undumpable object is encountered

      • :tolerant - replaces undumplable objects with nil

Note that an indent of less than zero will result in a tight one line output unless the text in the XML fields contain new line characters.

static VALUE
to_file(int argc, VALUE *argv, VALUE self) {
    struct _options     copts = ox_default_options;

    if (3 == argc) {
        parse_dump_options(argv[2], &copts);
    }
    Check_Type(*argv, T_STRING);
    ox_write_obj_to_file(argv[1], StringValuePtr(*argv), &copts);

    return Qnil;
}
dump(obj, options) → xml-string click to toggle source

Dumps an Object (obj) to a string.

  • obj [Object] Object to serialize as an XML document String

  • options [Hash] formating options

    • :indent [Fixnum] format expected

    • :no_empty [true|false] if true don't output empty elements

    • :xsd_date [true|false] use XSD date format if true, default: false

    • :circular [true|false] allow circular references, default: false

    • *:strict|:tolerant]* [ :effort effort to use when an undumpable object (e.g., IO) is encountered, default: :strict

      • :strict - raise an NotImplementedError if an undumpable object is encountered

      • :tolerant - replaces undumplable objects with nil

Note that an indent of less than zero will result in a tight one line output unless the text in the XML fields contain new line characters.

static VALUE
dump(int argc, VALUE *argv, VALUE self) {
    char                *xml;
    struct _options     copts = ox_default_options;
    VALUE               rstr;

    if (2 == argc) {
        parse_dump_options(argv[1], &copts);
    }
    if (0 == (xml = ox_write_obj_to_str(*argv, &copts))) {
        rb_raise(rb_eNoMemError, "Not enough memory.\n");
    }
    rstr = rb_str_new2(xml);
#if HAVE_RB_ENC_ASSOCIATE
    if ('\0' != *copts.encoding) {
        rb_enc_associate(rstr, rb_enc_find(copts.encoding));
    }
#endif
    xfree(xml);

    return rstr;
}