/* ox.h
 * Copyright (c) 2011, Peter Ohler
 * 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.
 * 
 * - Neither the name of Peter Ohler nor the names of its contributors may 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 HOLDER 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.
 */

#ifndef __OX_H__
#define __OX_H__

#if defined(__cplusplus)
extern "C" {
#if 0
} /* satisfy cc-mode */
#endif
#endif

#define RSTRING_NOT_MODIFIED

#include "ruby.h"
#if HAS_ENCODING_SUPPORT
#include "ruby/encoding.h"
#endif

#ifdef RUBINIUS_RUBY
#undef T_COMPLEX
enum st_retval {ST_CONTINUE = 0, ST_STOP = 1, ST_DELETE = 2, ST_CHECK};
#else
#if HAS_TOP_LEVEL_ST_H
/* Only on travis, local is where it is for all others. Seems to vary depending on the travis machine picked up. */
#include "st.h"
#else
#include "ruby/st.h"
#endif
#endif

#include "cache.h"

#define raise_error(msg, xml, current) _ox_raise_error(msg, xml, current, __FILE__, __LINE__)

#define MAX_TEXT_LEN	4096
#define MAX_ATTRS	1024
#define MAX_DEPTH	1024

#define SILENT		0
#define TRACE		1
#define DEBUG		2

#define XSD_DATE	0x0001
#define WITH_XML	0x0002
#define WITH_INST	0x0004
#define WITH_DTD	0x0008
#define CIRCULAR	0x0010

#define XSD_DATE_SET	0x0100
#define WITH_XML_SET	0x0200
#define WITH_INST_SET	0x0400
#define WITH_DTD_SET	0x0800
#define CIRCULAR_SET	0x1000

typedef enum {
    UseObj	= 1,
    UseAttr	= 2,
    UseAttrSet	= 3,
    UseArray	= 4,
    UseAMember	= 5,
    UseHash	= 6,
    UseHashKey	= 7,
    UseHashVal	= 8,
    UseRange	= 9,
    UseRangeAttr= 10,
    UseRaw	= 11,
} Use;

typedef enum {
    StrictEffort    = 's',
    TolerantEffort  = 't',
    AutoEffort	    = 'a',
    NoEffort	    = 0,
} Effort;

typedef enum {
    Yes	   = 'y',
    No	   = 'n',
    NotSet = 0
} YesNo;

typedef enum {
    ObjMode  = 'o',
    GenMode  = 'g',
    LimMode  = 'l',
    NoMode   = 0
} LoadMode;

typedef enum {
    NoCode	   = 0,
    ArrayCode	   = 'a',
    String64Code   = 'b', /* base64 encoded String */
    ClassCode	   = 'c',
    Symbol64Code   = 'd', /* base64 encoded Symbol */
    DateCode	   = 'D',
    ExceptionCode  = 'e',
    FloatCode	   = 'f',
    RegexpCode	   = 'g',
    HashCode	   = 'h',
    FixnumCode	   = 'i',
    BignumCode	   = 'j',
    KeyCode	   = 'k', /* indicates the value is a hash key, kind of a hack */
    RationalCode   = 'l',
    SymbolCode	   = 'm',
    FalseClassCode = 'n',
    ObjectCode	   = 'o',
    RefCode	   = 'p',
    RangeCode	   = 'r',
    StringCode	   = 's',
    TimeCode	   = 't',
    StructCode	   = 'u',
    ComplexCode	   = 'v',
    RawCode	   = 'x',
    TrueClassCode  = 'y',
    NilClassCode   = 'z',
} Type;

typedef struct _Attr {
    const char	*name;
    const char	*value;
} *Attr;

typedef struct _Helper {
    ID		var;	/* Object var ID */
    VALUE	obj;	/* object created or Qundef if not appropriate */
    Type	type;	/* type of object in obj */
} *Helper;

typedef struct _PInfo	*PInfo;

typedef struct _ParseCallbacks {
    void	(*instruct)(PInfo pi, const char *target, Attr attrs, const char *content);
    void	(*add_doctype)(PInfo pi, const char *docType);
    void	(*add_comment)(PInfo pi, const char *comment);
    void	(*add_cdata)(PInfo pi, const char *cdata, size_t len);
    void	(*add_text)(PInfo pi, char *text, int closed);
    void	(*add_element)(PInfo pi, const char *ename, Attr attrs, int hasChildren);
    void	(*end_element)(PInfo pi, const char *ename);
} *ParseCallbacks;

typedef struct _CircArray {
    VALUE		obj_array[1024];
    VALUE		*objs;
    unsigned long	size; /* allocated size or initial array size */
    unsigned long	cnt;
} *CircArray;

typedef struct _Options {
    char	encoding[64];	/* encoding, stored in the option to avoid GC invalidation in default values */
    int		indent;		/* indention for dump, default 2 */
    int		trace;		/* trace level */
    char	with_dtd;	/* YesNo */
    char	with_xml;	/* YesNo */
    char	with_instruct;	/* YesNo */
    char	circular;	/* YesNo */
    char	xsd_date;	/* YesNo */
    char	mode;		/* LoadMode */
    char	effort;		/* Effort */
    char	sym_keys;	/* symbolize keys */
#ifdef HAVE_RUBY_ENCODING_H
    rb_encoding	*rb_enc;
#elif HAS_PRIVATE_ENCODING
    VALUE	rb_enc;
#else
    void	*rb_enc;
#endif
} *Options;

/* parse information structure */
struct _PInfo {
    struct _Helper	helpers[MAX_DEPTH];
    Helper		h;		/* current helper or 0 if not set */
    char		*str;		/* buffer being read from */
    char		*s;		/* current position in buffer */
    VALUE		obj;
    ParseCallbacks	pcb;
    CircArray		circ_array;
    unsigned long	id;		/* set for text types when cirs_array is set */
    Options		options;
};

extern VALUE	ox_parse(char *xml, ParseCallbacks pcb, char **endp, Options options);
extern void	_ox_raise_error(const char *msg, const char *xml, const char *current, const char* file, int line);

extern void	ox_sax_parse(VALUE handler, VALUE io, int convert);
extern void	ox_sax_define(void);


extern char*	ox_write_obj_to_str(VALUE obj, Options copts);
extern void	ox_write_obj_to_file(VALUE obj, const char *path, Options copts);

extern struct _Options	ox_default_options;

extern VALUE	Ox;

extern ID	ox_at_column_id;
extern ID	ox_at_content_id;
extern ID	ox_at_id;
extern ID	ox_at_line_id;
extern ID	ox_at_value_id;
extern ID	ox_attr_id;
extern ID	ox_attr_value_id;
extern ID	ox_attributes_id;
extern ID	ox_beg_id;
extern ID	ox_cdata_id;
extern ID	ox_comment_id;
extern ID	ox_den_id;
extern ID	ox_doctype_id;
extern ID	ox_end_element_id;
extern ID	ox_end_id;
extern ID	ox_end_instruct_id;
extern ID	ox_error_id;
extern ID	ox_excl_id;
extern ID	ox_external_encoding_id;
extern ID	ox_fileno_id;
extern ID	ox_force_encoding_id;
extern ID	ox_inspect_id;
extern ID	ox_instruct_id;
extern ID	ox_jd_id;
extern ID	ox_keys_id;
extern ID	ox_local_id;
extern ID	ox_mesg_id;
extern ID	ox_message_id;
extern ID	ox_nodes_id;
extern ID	ox_num_id;
extern ID	ox_parse_id;
extern ID	ox_read_id;
extern ID	ox_readpartial_id;
extern ID	ox_start_element_id;
extern ID	ox_string_id;
extern ID	ox_text_id;
extern ID	ox_to_c_id;
extern ID	ox_to_s_id;
extern ID	ox_to_sym_id;
extern ID	ox_tv_sec_id;
extern ID	ox_tv_nsec_id;
extern ID	ox_tv_usec_id;
extern ID	ox_value_id;

#if HAS_ENCODING_SUPPORT
extern rb_encoding	*ox_utf8_encoding;
#elif HAS_PRIVATE_ENCODING
extern VALUE		ox_utf8_encoding;
#else
extern void		*ox_utf8_encoding;
#endif

extern VALUE	ox_arg_error_class;
extern VALUE	ox_date_class;
extern VALUE	ox_empty_string;
extern VALUE	ox_encoding_sym;
extern VALUE	ox_parse_error_class;
extern VALUE	ox_stringio_class;
extern VALUE	ox_struct_class;
extern VALUE	ox_time_class;
extern VALUE	ox_zero_fixnum;

extern VALUE	ox_document_clas;
extern VALUE	ox_element_clas;
extern VALUE	ox_instruct_clas;
extern VALUE	ox_bag_clas;
extern VALUE	ox_comment_clas;
extern VALUE	ox_doctype_clas;
extern VALUE	ox_cdata_clas;

extern Cache	ox_symbol_cache;
extern Cache	ox_class_cache;
extern Cache	ox_attr_cache;

#if defined(__cplusplus)
#if 0
{ /* satisfy cc-mode */
#endif
}  /* extern "C" { */
#endif
#endif /* __OX_H__ */