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/* Copyright (c) 2014, Vsevolod Stakhov
* 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.
*
* THIS SOFTWARE IS PROVIDED ''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 AUTHOR 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ucl.h"
#include "ucl_internal.h"
#include "ucl_chartable.h"
struct ucl_emitter_streamline_stack {
bool is_array;
bool empty;
const ucl_object_t *obj;
struct ucl_emitter_streamline_stack *next;
};
struct ucl_emitter_context_streamline {
/* Inherited from the main context */
/** Name of emitter (e.g. json, compact_json) */
const char *name;
/** Unique id (e.g. UCL_EMIT_JSON for standard emitters */
int id;
/** A set of output functions */
const struct ucl_emitter_functions *func;
/** A set of output operations */
const struct ucl_emitter_operations *ops;
/** Current amount of indent tabs */
unsigned int indent;
/** Top level object */
const ucl_object_t *top;
/** Optional comments */
const ucl_object_t *comments;
/* Streamline specific fields */
struct ucl_emitter_streamline_stack *containers;
};
#define TO_STREAMLINE(ctx) (struct ucl_emitter_context_streamline *)(ctx)
struct ucl_emitter_context*
ucl_object_emit_streamline_new (const ucl_object_t *obj,
enum ucl_emitter emit_type,
struct ucl_emitter_functions *emitter)
{
const struct ucl_emitter_context *ctx;
struct ucl_emitter_context_streamline *sctx;
ctx = ucl_emit_get_standard_context (emit_type);
if (ctx == NULL) {
return NULL;
}
sctx = calloc (1, sizeof (*sctx));
if (sctx == NULL) {
return NULL;
}
memcpy (sctx, ctx, sizeof (*ctx));
sctx->func = emitter;
sctx->top = obj;
ucl_object_emit_streamline_start_container ((struct ucl_emitter_context *)sctx,
obj);
return (struct ucl_emitter_context *)sctx;
}
void
ucl_object_emit_streamline_start_container (struct ucl_emitter_context *ctx,
const ucl_object_t *obj)
{
struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
struct ucl_emitter_streamline_stack *st, *top;
bool print_key = false;
/* Check top object presence */
if (sctx->top == NULL) {
sctx->top = obj;
}
top = sctx->containers;
st = malloc (sizeof (*st));
if (st != NULL) {
if (top != NULL && !top->is_array) {
print_key = true;
}
st->empty = true;
st->obj = obj;
if (obj != NULL && obj->type == UCL_ARRAY) {
st->is_array = true;
sctx->ops->ucl_emitter_start_array (ctx, obj, print_key);
}
else {
st->is_array = false;
sctx->ops->ucl_emitter_start_object (ctx, obj, print_key);
}
LL_PREPEND (sctx->containers, st);
}
}
void
ucl_object_emit_streamline_add_object (
struct ucl_emitter_context *ctx, const ucl_object_t *obj)
{
struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
bool is_array = false, is_first = false;
if (sctx->containers != NULL) {
if (sctx->containers->is_array) {
is_array = true;
}
if (sctx->containers->empty) {
is_first = true;
sctx->containers->empty = false;
}
}
sctx->ops->ucl_emitter_write_elt (ctx, obj, is_first, !is_array);
}
void
ucl_object_emit_streamline_end_container (struct ucl_emitter_context *ctx)
{
struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
struct ucl_emitter_streamline_stack *st;
if (sctx->containers != NULL) {
st = sctx->containers;
if (st->is_array) {
sctx->ops->ucl_emitter_end_array (ctx, st->obj);
}
else {
sctx->ops->ucl_emitter_end_object (ctx, st->obj);
}
sctx->containers = st->next;
free (st);
}
}
void
ucl_object_emit_streamline_finish (struct ucl_emitter_context *ctx)
{
struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
while (sctx->containers != NULL) {
ucl_object_emit_streamline_end_container (ctx);
}
free (sctx);
}
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