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166 lines
4.5 KiB
C
166 lines
4.5 KiB
C
/* Copyright (c) 2014, Vsevolod Stakhov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ucl.h"
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#include "ucl_internal.h"
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#include "ucl_chartable.h"
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struct ucl_emitter_streamline_stack {
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bool is_array;
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bool empty;
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const ucl_object_t *obj;
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struct ucl_emitter_streamline_stack *next;
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};
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struct ucl_emitter_context_streamline {
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/* Inherited from the main context */
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const char *name;
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int id;
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const struct ucl_emitter_functions *func;
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const struct ucl_emitter_operations *ops;
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unsigned int ident;
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const ucl_object_t *top;
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/* Streamline specific fields */
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struct ucl_emitter_streamline_stack *containers;
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};
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#define TO_STREAMLINE(ctx) (struct ucl_emitter_context_streamline *)(ctx)
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struct ucl_emitter_context*
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ucl_object_emit_streamline_new (const ucl_object_t *obj,
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enum ucl_emitter emit_type,
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struct ucl_emitter_functions *emitter)
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{
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const struct ucl_emitter_context *ctx;
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struct ucl_emitter_context_streamline *sctx;
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ctx = ucl_emit_get_standard_context (emit_type);
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if (ctx == NULL) {
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return NULL;
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}
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sctx = calloc (1, sizeof (*sctx));
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if (sctx == NULL) {
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return NULL;
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}
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memcpy (sctx, ctx, sizeof (*ctx));
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sctx->func = emitter;
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sctx->top = obj;
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ucl_object_emit_streamline_start_container ((struct ucl_emitter_context *)sctx,
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obj);
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return (struct ucl_emitter_context *)sctx;
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}
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void
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ucl_object_emit_streamline_start_container (struct ucl_emitter_context *ctx,
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const ucl_object_t *obj)
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{
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struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
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struct ucl_emitter_streamline_stack *st, *top;
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bool print_key = false;
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/* Check top object presence */
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if (sctx->top == NULL) {
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sctx->top = obj;
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}
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top = sctx->containers;
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st = malloc (sizeof (*st));
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if (st != NULL) {
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if (top != NULL && !top->is_array) {
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print_key = true;
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}
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st->empty = true;
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st->obj = obj;
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if (obj != NULL && obj->type == UCL_ARRAY) {
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st->is_array = true;
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sctx->ops->ucl_emitter_start_array (ctx, obj, print_key);
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}
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else {
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st->is_array = false;
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sctx->ops->ucl_emitter_start_object (ctx, obj, print_key);
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}
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LL_PREPEND (sctx->containers, st);
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}
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}
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void
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ucl_object_emit_streamline_add_object (
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struct ucl_emitter_context *ctx, const ucl_object_t *obj)
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{
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struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
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bool is_array = false, is_first = false;
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if (sctx->containers != NULL) {
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if (sctx->containers->is_array) {
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is_array = true;
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}
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if (sctx->containers->empty) {
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is_first = true;
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sctx->containers->empty = false;
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}
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}
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sctx->ops->ucl_emitter_write_elt (ctx, obj, is_first, !is_array);
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}
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void
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ucl_object_emit_streamline_end_container (struct ucl_emitter_context *ctx)
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{
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struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
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struct ucl_emitter_streamline_stack *st;
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if (sctx->containers != NULL) {
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st = sctx->containers;
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if (st->is_array) {
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sctx->ops->ucl_emitter_end_array (ctx, st->obj);
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}
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else {
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sctx->ops->ucl_emitter_end_object (ctx, st->obj);
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}
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sctx->containers = st->next;
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free (st);
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}
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}
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void
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ucl_object_emit_streamline_finish (struct ucl_emitter_context *ctx)
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{
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struct ucl_emitter_context_streamline *sctx = TO_STREAMLINE(ctx);
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while (sctx->containers != NULL) {
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ucl_object_emit_streamline_end_container (ctx);
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}
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free (sctx);
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}
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