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/*
* fy-emit.h - internal YAML emitter header
*
* Copyright (c) 2019 Pantelis Antoniou <pantelis.antoniou@konsulko.com>
*
* SPDX-License-Identifier: MIT
*/
#ifndef FY_EMIT_H
#define FY_EMIT_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <libfyaml.h>
#include "fy-utf8.h"
#include "fy-event.h"
#include "fy-emit-accum.h"
#define FYEF_WHITESPACE 0x0001
#define FYEF_INDENTATION 0x0002
#define FYEF_OPEN_ENDED 0x0004
#define FYEF_HAD_DOCUMENT_START 0x0008
#define FYEF_HAD_DOCUMENT_END 0x0010
#define FYEF_HAD_DOCUMENT_OUTPUT 0x0020
struct fy_document;
struct fy_emitter;
struct fy_document_state;
enum fy_emitter_state {
FYES_NONE, /* when not using the raw emitter interface */
FYES_STREAM_START,
FYES_FIRST_DOCUMENT_START,
FYES_DOCUMENT_START,
FYES_DOCUMENT_CONTENT,
FYES_DOCUMENT_END,
FYES_SEQUENCE_FIRST_ITEM,
FYES_SEQUENCE_ITEM,
FYES_MAPPING_FIRST_KEY,
FYES_MAPPING_KEY,
FYES_MAPPING_SIMPLE_VALUE,
FYES_MAPPING_VALUE,
FYES_END,
};
struct fy_emit_save_ctx {
bool flow_token : 1;
bool flow : 1;
bool empty : 1;
int old_indent;
int flags;
int indent;
struct fy_token *fyt_last_key;
struct fy_token *fyt_last_value;
int s_flags;
int s_indent;
};
/* internal flags */
#define DDNF_ROOT 0x0001
#define DDNF_SEQ 0x0002
#define DDNF_MAP 0x0004
#define DDNF_SIMPLE 0x0008
#define DDNF_FLOW 0x0010
#define DDNF_INDENTLESS 0x0020
#define DDNF_SIMPLE_SCALAR_KEY 0x0040
struct fy_emitter {
int line;
int column;
int flow_level;
unsigned int flags;
bool output_error : 1;
bool source_json : 1; /* the source was json */
bool force_json : 1; /* force JSON mode unconditionally */
bool suppress_recycling_force : 1;
bool suppress_recycling : 1;
/* current document */
struct fy_emitter_cfg cfg; /* yeah, it isn't worth just to save a few bytes */
struct fy_document *fyd;
struct fy_document_state *fyds; /* fyd->fyds when fyd != NULL */
struct fy_emit_accum ea;
char ea_inplace_buf[256]; /* the in place accumulator buffer before allocating */
struct fy_diag *diag;
/* streaming event mode */
enum fy_emitter_state state;
enum fy_emitter_state *state_stack;
unsigned int state_stack_alloc;
unsigned int state_stack_top;
enum fy_emitter_state state_stack_inplace[64];
struct fy_eventp_list queued_events;
int s_indent;
int s_flags;
struct fy_emit_save_ctx s_sc;
struct fy_emit_save_ctx *sc_stack;
unsigned int sc_stack_alloc;
unsigned int sc_stack_top;
struct fy_emit_save_ctx sc_stack_inplace[16];
/* recycled */
struct fy_eventp_list recycled_eventp;
struct fy_token_list recycled_token;
struct fy_eventp_list *recycled_eventp_list; /* NULL when suppressing */
struct fy_token_list *recycled_token_list; /* NULL when suppressing */
/* for special needs */
void (*finalizer)(struct fy_emitter *emit);
};
int fy_emit_setup(struct fy_emitter *emit, const struct fy_emitter_cfg *cfg);
void fy_emit_cleanup(struct fy_emitter *emit);
void fy_emit_write(struct fy_emitter *emit, enum fy_emitter_write_type type, const char *str, int len);
static inline bool fy_emit_whitespace(struct fy_emitter *emit)
{
return !!(emit->flags & FYEF_WHITESPACE);
}
static inline bool fy_emit_indentation(struct fy_emitter *emit)
{
return !!(emit->flags & FYEF_INDENTATION);
}
static inline bool fy_emit_open_ended(struct fy_emitter *emit)
{
return !!(emit->flags & FYEF_OPEN_ENDED);
}
static inline void
fy_emit_output_accum(struct fy_emitter *emit, enum fy_emitter_write_type type, struct fy_emit_accum *ea)
{
const char *text;
size_t len;
text = fy_emit_accum_get(ea, &len);
if (text && len > 0)
fy_emit_write(emit, type, text, len);
fy_emit_accum_reset(ea);
}
#endif
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