Class: LibXML::XML::HTMLParser::Context
- Inherits:
-
Parser::Context
- Object
- Parser::Context
- LibXML::XML::HTMLParser::Context
- Defined in:
- ext/libxml/ruby_xml_html_parser_context.c,
ext/libxml/ruby_xml_html_parser_context.c
Overview
The XML::HTMLParser::Context class provides in-depth control over how a document is parsed.
Class Method Summary collapse
-
.XML::HTMLParser::Context.file(file) ⇒ XML::HTMLParser::Context
Creates a new parser context based on the specified file or uri.
-
.XML::HTMLParser::Context.io(io) ⇒ XML::HTMLParser::Context
Creates a new parser context based on the specified io object.
-
.XML::HTMLParser::Context.string(string) ⇒ XML::HTMLParser::Context
Creates a new parser context based on the specified string.
Instance Method Summary collapse
-
#disable_cdata=(bool) ⇒ Object
Control whether the CDATA nodes will be created in this context.
-
#options=(options) ⇒ Object
Provides control over the execution of a parser.
Methods inherited from Parser::Context
#base_uri, #base_uri=, #data_directory, #depth, #disable_cdata?, #disable_sax?, #docbook?, document, #encoding, #encoding=, #errno, #html?, #io_max_num_streams, #io_num_streams, #keep_blanks?, #name_depth, #name_depth_max, #name_node, #name_tab, #node, #node_depth, #node_depth_max, #num_chars, #options, #recovery=, #recovery?, #replace_entities=, #replace_entities?, #space_depth, #space_depth_max, #standalone?, #stats?, #subset_external?, #subset_external_system_id, #subset_external_uri, #subset_internal?, #subset_internal_name, #valid, #validate?, #version, #well_formed?
Class Method Details
.XML::HTMLParser::Context.file(file) ⇒ XML::HTMLParser::Context
Creates a new parser context based on the specified file or uri.
Parameters:
file - A filename or uri.
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# File 'ext/libxml/ruby_xml_html_parser_context.c', line 152
static VALUE rxml_html_parser_context_file(VALUE klass, VALUE file)
{
htmlParserCtxtPtr ctxt = htmlCreateFileParserCtxt(StringValuePtr(file), NULL);
if (!ctxt)
rxml_raise(&xmlLastError);
/* This is annoying, but xmlInitParserCtxt (called indirectly above) and
xmlCtxtUseOptionsInternal (called below) initialize slightly different
context options, in particular XML_PARSE_NODICT which xmlInitParserCtxt
sets to 0 and xmlCtxtUseOptionsInternal sets to 1. So we have to call both. */
htmlCtxtUseOptions(ctxt, rxml_libxml_default_options());
return rxml_html_parser_context_wrap(ctxt);
}
|
.XML::HTMLParser::Context.io(io) ⇒ XML::HTMLParser::Context
Creates a new parser context based on the specified io object.
Parameters:
io - A ruby IO object.
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# File 'ext/libxml/ruby_xml_html_parser_context.c', line 176
static VALUE rxml_html_parser_context_io(VALUE klass, VALUE io)
{
VALUE result;
htmlParserCtxtPtr ctxt;
xmlParserInputBufferPtr input;
xmlParserInputPtr stream;
if (NIL_P(io))
rb_raise(rb_eTypeError, "Must pass in an IO object");
input = xmlParserInputBufferCreateIO((xmlInputReadCallback) rxml_read_callback, NULL,
(void*)io, XML_CHAR_ENCODING_NONE);
ctxt = htmlNewParserCtxt();
if (!ctxt)
{
xmlFreeParserInputBuffer(input);
rxml_raise(&xmlLastError);
}
/* This is annoying, but xmlInitParserCtxt (called indirectly above) and
xmlCtxtUseOptionsInternal (called below) initialize slightly different
context options, in particular XML_PARSE_NODICT which xmlInitParserCtxt
sets to 0 and xmlCtxtUseOptionsInternal sets to 1. So we have to call both. */
htmlCtxtUseOptions(ctxt, rxml_libxml_default_options());
stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
if (!stream)
{
xmlFreeParserInputBuffer(input);
xmlFreeParserCtxt(ctxt);
rxml_raise(&xmlLastError);
}
inputPush(ctxt, stream);
result = rxml_html_parser_context_wrap(ctxt);
/* Attach io object to parser so it won't get freed.*/
rb_ivar_set(result, IO_ATTR, io);
return result;
}
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.XML::HTMLParser::Context.string(string) ⇒ XML::HTMLParser::Context
Creates a new parser context based on the specified string.
Parameters:
string - A string that contains the data to parse.
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# File 'ext/libxml/ruby_xml_html_parser_context.c', line 228
static VALUE rxml_html_parser_context_string(VALUE klass, VALUE string)
{
htmlParserCtxtPtr ctxt;
Check_Type(string, T_STRING);
if (RSTRING_LEN(string) == 0)
rb_raise(rb_eArgError, "Must specify a string with one or more characters");
ctxt = xmlCreateMemoryParserCtxt(StringValuePtr(string),
RSTRING_LEN(string));
if (!ctxt)
rxml_raise(&xmlLastError);
/* This is annoying, but xmlInitParserCtxt (called indirectly above) and
xmlCtxtUseOptionsInternal (called below) initialize slightly different
context options, in particular XML_PARSE_NODICT which xmlInitParserCtxt
sets to 0 and xmlCtxtUseOptionsInternal sets to 1. So we have to call both. */
htmlCtxtUseOptions(ctxt, rxml_libxml_default_options());
htmlDefaultSAXHandlerInit();
if (ctxt->sax != NULL)
memcpy(ctxt->sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
return rxml_html_parser_context_wrap(ctxt);
}
|
Instance Method Details
#disable_cdata=(bool) ⇒ Object
Control whether the CDATA nodes will be created in this context.
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# File 'ext/libxml/ruby_xml_html_parser_context.c', line 260
static VALUE rxml_html_parser_context_disable_cdata_set(VALUE self, VALUE bool)
{
htmlParserCtxtPtr ctxt;
Data_Get_Struct(self, htmlParserCtxt, ctxt);
if (ctxt->sax == NULL)
rb_raise(rb_eRuntimeError, "Sax handler is not yet set");
/* LibXML controls this internally with the default SAX handler. */
if (bool)
ctxt->sax->cdataBlock = NULL;
else
ctxt->sax->cdataBlock = htmlDefaultSAXHandler.cdataBlock;
return bool;
}
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#options=(XML) ⇒ Object #XML::Parser::Options::NOCDATA ⇒ Object
Provides control over the execution of a parser. Valid values are the constants defined on XML::Parser::Options. Multiple options can be combined by using Bitwise OR (|).
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# File 'ext/libxml/ruby_xml_html_parser_context.c', line 286
static VALUE rxml_html_parser_context_options_set(VALUE self, VALUE options)
{
int result;
htmlParserCtxtPtr ctxt;
Check_Type(options, T_FIXNUM);
Data_Get_Struct(self, htmlParserCtxt, ctxt);
result = htmlCtxtUseOptions(ctxt, NUM2INT(options));
return self;
}
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