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- /* Copyright (c) 2013, 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"
- #ifdef HAVE_FLOAT_H
- #include <float.h>
- #endif
- #ifdef HAVE_MATH_H
- #include <math.h>
- #endif
-
- /**
- * @file ucl_emitter.c
- * Serialise UCL object to various of output formats
- */
-
- static void ucl_emitter_common_elt (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool first, bool print_key, bool compact);
-
- #define UCL_EMIT_TYPE_OPS(type) \
- static void ucl_emit_ ## type ## _elt (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj, bool first, bool print_key); \
- static void ucl_emit_ ## type ## _start_obj (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj, bool print_key); \
- static void ucl_emit_ ## type## _start_array (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj, bool print_key); \
- static void ucl_emit_ ##type## _end_object (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj); \
- static void ucl_emit_ ##type## _end_array (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj)
-
- /*
- * JSON format operations
- */
- UCL_EMIT_TYPE_OPS(json);
- UCL_EMIT_TYPE_OPS(json_compact);
- UCL_EMIT_TYPE_OPS(config);
- UCL_EMIT_TYPE_OPS(yaml);
- UCL_EMIT_TYPE_OPS(msgpack);
-
- #define UCL_EMIT_TYPE_CONTENT(type) { \
- .ucl_emitter_write_elt = ucl_emit_ ## type ## _elt, \
- .ucl_emitter_start_object = ucl_emit_ ## type ##_start_obj, \
- .ucl_emitter_start_array = ucl_emit_ ## type ##_start_array, \
- .ucl_emitter_end_object = ucl_emit_ ## type ##_end_object, \
- .ucl_emitter_end_array = ucl_emit_ ## type ##_end_array \
- }
-
- static const struct ucl_emitter_operations ucl_standart_emitter_ops[] = {
- [UCL_EMIT_JSON] = UCL_EMIT_TYPE_CONTENT(json),
- [UCL_EMIT_JSON_COMPACT] = UCL_EMIT_TYPE_CONTENT(json_compact),
- [UCL_EMIT_CONFIG] = UCL_EMIT_TYPE_CONTENT(config),
- [UCL_EMIT_YAML] = UCL_EMIT_TYPE_CONTENT(yaml),
- [UCL_EMIT_MSGPACK] = UCL_EMIT_TYPE_CONTENT(msgpack)
- };
-
- /*
- * Utility to check whether we need a top object
- */
- #define UCL_EMIT_IDENT_TOP_OBJ(ctx, obj) ((ctx)->top != (obj) || \
- ((ctx)->id == UCL_EMIT_JSON_COMPACT || (ctx)->id == UCL_EMIT_JSON))
-
-
- /**
- * Add tabulation to the output buffer
- * @param buf target buffer
- * @param tabs number of tabs to add
- */
- static inline void
- ucl_add_tabs (const struct ucl_emitter_functions *func, unsigned int tabs,
- bool compact)
- {
- if (!compact && tabs > 0) {
- func->ucl_emitter_append_character (' ', tabs * 4, func->ud);
- }
- }
-
- /**
- * Print key for the element
- * @param ctx
- * @param obj
- */
- static void
- ucl_emitter_print_key (bool print_key, struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool compact)
- {
- const struct ucl_emitter_functions *func = ctx->func;
-
- if (!print_key) {
- return;
- }
-
- if (ctx->id == UCL_EMIT_CONFIG) {
- if (obj->flags & UCL_OBJECT_NEED_KEY_ESCAPE) {
- ucl_elt_string_write_json (obj->key, obj->keylen, ctx);
- }
- else {
- func->ucl_emitter_append_len (obj->key, obj->keylen, func->ud);
- }
-
- if (obj->type != UCL_OBJECT && obj->type != UCL_ARRAY) {
- func->ucl_emitter_append_len (" = ", 3, func->ud);
- }
- else {
- func->ucl_emitter_append_character (' ', 1, func->ud);
- }
- }
- else if (ctx->id == UCL_EMIT_YAML) {
- if (obj->keylen > 0 && (obj->flags & UCL_OBJECT_NEED_KEY_ESCAPE)) {
- ucl_elt_string_write_json (obj->key, obj->keylen, ctx);
- }
- else if (obj->keylen > 0) {
- func->ucl_emitter_append_len (obj->key, obj->keylen, func->ud);
- }
- else {
- func->ucl_emitter_append_len ("null", 4, func->ud);
- }
-
- func->ucl_emitter_append_len (": ", 2, func->ud);
- }
- else {
- if (obj->keylen > 0) {
- ucl_elt_string_write_json (obj->key, obj->keylen, ctx);
- }
- else {
- func->ucl_emitter_append_len ("null", 4, func->ud);
- }
-
- if (compact) {
- func->ucl_emitter_append_character (':', 1, func->ud);
- }
- else {
- func->ucl_emitter_append_len (": ", 2, func->ud);
- }
- }
- }
-
- static void
- ucl_emitter_finish_object (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool compact, bool is_array)
- {
- const struct ucl_emitter_functions *func = ctx->func;
-
- if (ctx->id == UCL_EMIT_CONFIG && obj != ctx->top) {
- if (obj->type != UCL_OBJECT && obj->type != UCL_ARRAY) {
- if (!is_array) {
- /* Objects are split by ';' */
- func->ucl_emitter_append_len (";\n", 2, func->ud);
- }
- else {
- /* Use commas for arrays */
- func->ucl_emitter_append_len (",\n", 2, func->ud);
- }
- }
- else {
- func->ucl_emitter_append_character ('\n', 1, func->ud);
- }
- }
- }
-
- /**
- * End standard ucl object
- * @param ctx emitter context
- * @param compact compact flag
- */
- static void
- ucl_emitter_common_end_object (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool compact)
- {
- const struct ucl_emitter_functions *func = ctx->func;
-
- if (UCL_EMIT_IDENT_TOP_OBJ(ctx, obj)) {
- ctx->indent --;
- if (compact) {
- func->ucl_emitter_append_character ('}', 1, func->ud);
- }
- else {
- if (ctx->id != UCL_EMIT_CONFIG) {
- /* newline is already added for this format */
- func->ucl_emitter_append_character ('\n', 1, func->ud);
- }
- ucl_add_tabs (func, ctx->indent, compact);
- func->ucl_emitter_append_character ('}', 1, func->ud);
- }
- }
-
- ucl_emitter_finish_object (ctx, obj, compact, false);
- }
-
- /**
- * End standard ucl array
- * @param ctx emitter context
- * @param compact compact flag
- */
- static void
- ucl_emitter_common_end_array (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool compact)
- {
- const struct ucl_emitter_functions *func = ctx->func;
-
- ctx->indent --;
- if (compact) {
- func->ucl_emitter_append_character (']', 1, func->ud);
- }
- else {
- if (ctx->id != UCL_EMIT_CONFIG) {
- /* newline is already added for this format */
- func->ucl_emitter_append_character ('\n', 1, func->ud);
- }
- ucl_add_tabs (func, ctx->indent, compact);
- func->ucl_emitter_append_character (']', 1, func->ud);
- }
-
- ucl_emitter_finish_object (ctx, obj, compact, true);
- }
-
- /**
- * Start emit standard UCL array
- * @param ctx emitter context
- * @param obj object to write
- * @param compact compact flag
- */
- static void
- ucl_emitter_common_start_array (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool print_key, bool compact)
- {
- const ucl_object_t *cur;
- ucl_object_iter_t iter = NULL;
- const struct ucl_emitter_functions *func = ctx->func;
- bool first = true;
-
- ucl_emitter_print_key (print_key, ctx, obj, compact);
-
- if (compact) {
- func->ucl_emitter_append_character ('[', 1, func->ud);
- }
- else {
- func->ucl_emitter_append_len ("[\n", 2, func->ud);
- }
-
- ctx->indent ++;
-
- if (obj->type == UCL_ARRAY) {
- /* explicit array */
- while ((cur = ucl_object_iterate (obj, &iter, true)) != NULL) {
- ucl_emitter_common_elt (ctx, cur, first, false, compact);
- first = false;
- }
- }
- else {
- /* implicit array */
- cur = obj;
- while (cur) {
- ucl_emitter_common_elt (ctx, cur, first, false, compact);
- first = false;
- cur = cur->next;
- }
- }
-
-
- }
-
- /**
- * Start emit standard UCL object
- * @param ctx emitter context
- * @param obj object to write
- * @param compact compact flag
- */
- static void
- ucl_emitter_common_start_object (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool print_key, bool compact)
- {
- ucl_hash_iter_t it = NULL;
- const ucl_object_t *cur, *elt;
- const struct ucl_emitter_functions *func = ctx->func;
- bool first = true;
-
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- /*
- * Print <ident_level>{
- * <ident_level + 1><object content>
- */
- if (UCL_EMIT_IDENT_TOP_OBJ(ctx, obj)) {
- if (compact) {
- func->ucl_emitter_append_character ('{', 1, func->ud);
- }
- else {
- func->ucl_emitter_append_len ("{\n", 2, func->ud);
- }
- ctx->indent ++;
- }
-
- while ((cur = ucl_hash_iterate (obj->value.ov, &it))) {
-
- if (ctx->id == UCL_EMIT_CONFIG) {
- LL_FOREACH (cur, elt) {
- ucl_emitter_common_elt (ctx, elt, first, true, compact);
- }
- }
- else {
- /* Expand implicit arrays */
- if (cur->next != NULL) {
- if (!first) {
- if (compact) {
- func->ucl_emitter_append_character (',', 1, func->ud);
- }
- else {
- func->ucl_emitter_append_len (",\n", 2, func->ud);
- }
- }
- ucl_add_tabs (func, ctx->indent, compact);
- ucl_emitter_common_start_array (ctx, cur, true, compact);
- ucl_emitter_common_end_array (ctx, cur, compact);
- }
- else {
- ucl_emitter_common_elt (ctx, cur, first, true, compact);
- }
- }
-
- first = false;
- }
- }
-
- /**
- * Common choice of object emitting
- * @param ctx emitter context
- * @param obj object to print
- * @param first flag to mark the first element
- * @param print_key print key of an object
- * @param compact compact output
- */
- static void
- ucl_emitter_common_elt (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool first, bool print_key, bool compact)
- {
- const struct ucl_emitter_functions *func = ctx->func;
- bool flag;
- struct ucl_object_userdata *ud;
- const ucl_object_t *comment = NULL, *cur_comment;
- const char *ud_out = "";
-
- if (ctx->id != UCL_EMIT_CONFIG && !first) {
- if (compact) {
- func->ucl_emitter_append_character (',', 1, func->ud);
- }
- else {
- if (ctx->id == UCL_EMIT_YAML && ctx->indent == 0) {
- func->ucl_emitter_append_len ("\n", 1, func->ud);
- } else {
- func->ucl_emitter_append_len (",\n", 2, func->ud);
- }
- }
- }
-
- ucl_add_tabs (func, ctx->indent, compact);
-
- if (ctx->comments && ctx->id == UCL_EMIT_CONFIG) {
- comment = ucl_object_lookup_len (ctx->comments, (const char *)&obj,
- sizeof (void *));
-
- if (comment) {
- if (!(comment->flags & UCL_OBJECT_INHERITED)) {
- DL_FOREACH (comment, cur_comment) {
- func->ucl_emitter_append_len (cur_comment->value.sv,
- cur_comment->len,
- func->ud);
- func->ucl_emitter_append_character ('\n', 1, func->ud);
- ucl_add_tabs (func, ctx->indent, compact);
- }
-
- comment = NULL;
- }
- }
- }
-
- switch (obj->type) {
- case UCL_INT:
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- func->ucl_emitter_append_int (ucl_object_toint (obj), func->ud);
- ucl_emitter_finish_object (ctx, obj, compact, !print_key);
- break;
- case UCL_FLOAT:
- case UCL_TIME:
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- func->ucl_emitter_append_double (ucl_object_todouble (obj), func->ud);
- ucl_emitter_finish_object (ctx, obj, compact, !print_key);
- break;
- case UCL_BOOLEAN:
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- flag = ucl_object_toboolean (obj);
- if (flag) {
- func->ucl_emitter_append_len ("true", 4, func->ud);
- }
- else {
- func->ucl_emitter_append_len ("false", 5, func->ud);
- }
- ucl_emitter_finish_object (ctx, obj, compact, !print_key);
- break;
- case UCL_STRING:
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- if (ctx->id == UCL_EMIT_CONFIG) {
- if (ucl_maybe_long_string (obj)) {
- ucl_elt_string_write_multiline (obj->value.sv, obj->len, ctx);
- } else {
- if (obj->flags & UCL_OBJECT_SQUOTED) {
- ucl_elt_string_write_squoted (obj->value.sv, obj->len, ctx);
- } else {
- ucl_elt_string_write_json (obj->value.sv, obj->len, ctx);
- }
- }
- }
- else {
- ucl_elt_string_write_json (obj->value.sv, obj->len, ctx);
- }
- ucl_emitter_finish_object (ctx, obj, compact, !print_key);
- break;
- case UCL_NULL:
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- func->ucl_emitter_append_len ("null", 4, func->ud);
- ucl_emitter_finish_object (ctx, obj, compact, !print_key);
- break;
- case UCL_OBJECT:
- ucl_emitter_common_start_object (ctx, obj, print_key, compact);
- ucl_emitter_common_end_object (ctx, obj, compact);
- break;
- case UCL_ARRAY:
- ucl_emitter_common_start_array (ctx, obj, print_key, compact);
- ucl_emitter_common_end_array (ctx, obj, compact);
- break;
- case UCL_USERDATA:
- ud = (struct ucl_object_userdata *)obj;
- ucl_emitter_print_key (print_key, ctx, obj, compact);
- if (ud->emitter) {
- ud_out = ud->emitter (obj->value.ud);
- if (ud_out == NULL) {
- ud_out = "null";
- }
- }
- ucl_elt_string_write_json (ud_out, strlen (ud_out), ctx);
- ucl_emitter_finish_object (ctx, obj, compact, !print_key);
- break;
- }
-
- if (comment) {
- DL_FOREACH (comment, cur_comment) {
- func->ucl_emitter_append_len (cur_comment->value.sv,
- cur_comment->len,
- func->ud);
- func->ucl_emitter_append_character ('\n', 1, func->ud);
-
- if (cur_comment->next) {
- ucl_add_tabs (func, ctx->indent, compact);
- }
- }
- }
- }
-
- /*
- * Specific standard implementations of the emitter functions
- */
- #define UCL_EMIT_TYPE_IMPL(type, compact) \
- static void ucl_emit_ ## type ## _elt (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj, bool first, bool print_key) { \
- ucl_emitter_common_elt (ctx, obj, first, print_key, (compact)); \
- } \
- static void ucl_emit_ ## type ## _start_obj (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj, bool print_key) { \
- ucl_emitter_common_start_object (ctx, obj, print_key, (compact)); \
- } \
- static void ucl_emit_ ## type## _start_array (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj, bool print_key) { \
- ucl_emitter_common_start_array (ctx, obj, print_key, (compact)); \
- } \
- static void ucl_emit_ ##type## _end_object (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj) { \
- ucl_emitter_common_end_object (ctx, obj, (compact)); \
- } \
- static void ucl_emit_ ##type## _end_array (struct ucl_emitter_context *ctx, \
- const ucl_object_t *obj) { \
- ucl_emitter_common_end_array (ctx, obj, (compact)); \
- }
-
- UCL_EMIT_TYPE_IMPL(json, false)
- UCL_EMIT_TYPE_IMPL(json_compact, true)
- UCL_EMIT_TYPE_IMPL(config, false)
- UCL_EMIT_TYPE_IMPL(yaml, false)
-
- static void
- ucl_emit_msgpack_elt (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool first, bool print_key)
- {
- ucl_object_iter_t it;
- struct ucl_object_userdata *ud;
- const char *ud_out;
- const ucl_object_t *cur, *celt;
-
- switch (obj->type) {
- case UCL_INT:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
- ucl_emitter_print_int_msgpack (ctx, ucl_object_toint (obj));
- break;
-
- case UCL_FLOAT:
- case UCL_TIME:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
- ucl_emitter_print_double_msgpack (ctx, ucl_object_todouble (obj));
- break;
-
- case UCL_BOOLEAN:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
- ucl_emitter_print_bool_msgpack (ctx, ucl_object_toboolean (obj));
- break;
-
- case UCL_STRING:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
-
- if (obj->flags & UCL_OBJECT_BINARY) {
- ucl_emitter_print_binary_string_msgpack (ctx, obj->value.sv,
- obj->len);
- }
- else {
- ucl_emitter_print_string_msgpack (ctx, obj->value.sv, obj->len);
- }
- break;
-
- case UCL_NULL:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
- ucl_emitter_print_null_msgpack (ctx);
- break;
-
- case UCL_OBJECT:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
- ucl_emit_msgpack_start_obj (ctx, obj, print_key);
- it = NULL;
-
- while ((cur = ucl_object_iterate (obj, &it, true)) != NULL) {
- LL_FOREACH (cur, celt) {
- ucl_emit_msgpack_elt (ctx, celt, false, true);
- /* XXX:
- * in msgpack the length of objects is encoded within a single elt
- * so in case of multi-value keys we are using merely the first
- * element ignoring others
- */
- break;
- }
- }
-
- break;
-
- case UCL_ARRAY:
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
- ucl_emit_msgpack_start_array (ctx, obj, print_key);
- it = NULL;
-
- while ((cur = ucl_object_iterate (obj, &it, true)) != NULL) {
- ucl_emit_msgpack_elt (ctx, cur, false, false);
- }
-
- break;
-
- case UCL_USERDATA:
- ud = (struct ucl_object_userdata *)obj;
- ucl_emitter_print_key_msgpack (print_key, ctx, obj);
-
- if (ud->emitter) {
- ud_out = ud->emitter (obj->value.ud);
- if (ud_out == NULL) {
- ud_out = "null";
- }
- }
- ucl_emitter_print_string_msgpack (ctx, obj->value.sv, obj->len);
- break;
- }
- }
-
- static void
- ucl_emit_msgpack_start_obj (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool print_key)
- {
- ucl_emitter_print_object_msgpack (ctx, obj->len);
- }
-
- static void
- ucl_emit_msgpack_start_array (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj, bool print_key)
- {
- ucl_emitter_print_array_msgpack (ctx, obj->len);
- }
-
- static void
- ucl_emit_msgpack_end_object (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj)
- {
-
- }
-
- static void
- ucl_emit_msgpack_end_array (struct ucl_emitter_context *ctx,
- const ucl_object_t *obj)
- {
-
- }
-
- unsigned char *
- ucl_object_emit (const ucl_object_t *obj, enum ucl_emitter emit_type)
- {
- return ucl_object_emit_len (obj, emit_type, NULL);
- }
-
- unsigned char *
- ucl_object_emit_len (const ucl_object_t *obj, enum ucl_emitter emit_type,
- size_t *outlen)
- {
- unsigned char *res = NULL;
- struct ucl_emitter_functions *func;
- UT_string *s;
-
- if (obj == NULL) {
- return NULL;
- }
-
- func = ucl_object_emit_memory_funcs ((void **)&res);
-
- if (func != NULL) {
- s = func->ud;
- ucl_object_emit_full (obj, emit_type, func, NULL);
-
- if (outlen != NULL) {
- *outlen = s->i;
- }
-
- ucl_object_emit_funcs_free (func);
- }
-
- return res;
- }
-
- bool
- ucl_object_emit_full (const ucl_object_t *obj, enum ucl_emitter emit_type,
- struct ucl_emitter_functions *emitter,
- const ucl_object_t *comments)
- {
- const struct ucl_emitter_context *ctx;
- struct ucl_emitter_context my_ctx;
- bool res = false;
-
- ctx = ucl_emit_get_standard_context (emit_type);
- if (ctx != NULL) {
- memcpy (&my_ctx, ctx, sizeof (my_ctx));
- my_ctx.func = emitter;
- my_ctx.indent = 0;
- my_ctx.top = obj;
- my_ctx.comments = comments;
-
- my_ctx.ops->ucl_emitter_write_elt (&my_ctx, obj, true, false);
- res = true;
- }
-
- return res;
- }
-
- static const struct ucl_emitter_context ucl_standard_emitters[] = {
- [UCL_EMIT_JSON] = {
- .name = "json",
- .id = UCL_EMIT_JSON,
- .func = NULL,
- .ops = &ucl_standart_emitter_ops[UCL_EMIT_JSON]
- },
- [UCL_EMIT_JSON_COMPACT] = {
- .name = "json_compact",
- .id = UCL_EMIT_JSON_COMPACT,
- .func = NULL,
- .ops = &ucl_standart_emitter_ops[UCL_EMIT_JSON_COMPACT]
- },
- [UCL_EMIT_CONFIG] = {
- .name = "config",
- .id = UCL_EMIT_CONFIG,
- .func = NULL,
- .ops = &ucl_standart_emitter_ops[UCL_EMIT_CONFIG]
- },
- [UCL_EMIT_YAML] = {
- .name = "yaml",
- .id = UCL_EMIT_YAML,
- .func = NULL,
- .ops = &ucl_standart_emitter_ops[UCL_EMIT_YAML]
- },
- [UCL_EMIT_MSGPACK] = {
- .name = "msgpack",
- .id = UCL_EMIT_MSGPACK,
- .func = NULL,
- .ops = &ucl_standart_emitter_ops[UCL_EMIT_MSGPACK]
- }
- };
-
- /**
- * Get standard emitter context for a specified emit_type
- * @param emit_type type of emitter
- * @return context or NULL if input is invalid
- */
- const struct ucl_emitter_context *
- ucl_emit_get_standard_context (enum ucl_emitter emit_type)
- {
- if (emit_type >= UCL_EMIT_JSON && emit_type < UCL_EMIT_MAX) {
- return &ucl_standard_emitters[emit_type];
- }
-
- return NULL;
- }
-
- /**
- * Serialise string
- * @param str string to emit
- * @param buf target buffer
- */
- void
- ucl_elt_string_write_json (const char *str, size_t size,
- struct ucl_emitter_context *ctx)
- {
- const char *p = str, *c = str;
- size_t len = 0;
- const struct ucl_emitter_functions *func = ctx->func;
-
- func->ucl_emitter_append_character ('"', 1, func->ud);
-
- while (size) {
- if (ucl_test_character (*p, (UCL_CHARACTER_JSON_UNSAFE|
- UCL_CHARACTER_DENIED|
- UCL_CHARACTER_WHITESPACE_UNSAFE))) {
- if (len > 0) {
- func->ucl_emitter_append_len (c, len, func->ud);
- }
- switch (*p) {
- case '\0':
- func->ucl_emitter_append_len ("\\u0000", 6, func->ud);
- break;
- case '\n':
- func->ucl_emitter_append_len ("\\n", 2, func->ud);
- break;
- case '\r':
- func->ucl_emitter_append_len ("\\r", 2, func->ud);
- break;
- case '\b':
- func->ucl_emitter_append_len ("\\b", 2, func->ud);
- break;
- case '\t':
- func->ucl_emitter_append_len ("\\t", 2, func->ud);
- break;
- case '\f':
- func->ucl_emitter_append_len ("\\f", 2, func->ud);
- break;
- case '\v':
- func->ucl_emitter_append_len ("\\u000B", 6, func->ud);
- break;
- case '\\':
- func->ucl_emitter_append_len ("\\\\", 2, func->ud);
- break;
- case ' ':
- func->ucl_emitter_append_character (' ', 1, func->ud);
- break;
- case '"':
- func->ucl_emitter_append_len ("\\\"", 2, func->ud);
- break;
- default:
- /* Emit unicode unknown character */
- func->ucl_emitter_append_len ("\\uFFFD", 6, func->ud);
- break;
- }
- len = 0;
- c = ++p;
- }
- else {
- p ++;
- len ++;
- }
- size --;
- }
-
- if (len > 0) {
- func->ucl_emitter_append_len (c, len, func->ud);
- }
-
- func->ucl_emitter_append_character ('"', 1, func->ud);
- }
-
- void
- ucl_elt_string_write_squoted (const char *str, size_t size,
- struct ucl_emitter_context *ctx)
- {
- const char *p = str, *c = str;
- size_t len = 0;
- const struct ucl_emitter_functions *func = ctx->func;
-
- func->ucl_emitter_append_character ('\'', 1, func->ud);
-
- while (size) {
- if (*p == '\'') {
- if (len > 0) {
- func->ucl_emitter_append_len (c, len, func->ud);
- }
-
- len = 0;
- c = ++p;
- func->ucl_emitter_append_len ("\\\'", 2, func->ud);
- }
- else {
- p ++;
- len ++;
- }
- size --;
- }
-
- if (len > 0) {
- func->ucl_emitter_append_len (c, len, func->ud);
- }
-
- func->ucl_emitter_append_character ('\'', 1, func->ud);
- }
-
- void
- ucl_elt_string_write_multiline (const char *str, size_t size,
- struct ucl_emitter_context *ctx)
- {
- const struct ucl_emitter_functions *func = ctx->func;
-
- func->ucl_emitter_append_len ("<<EOD\n", sizeof ("<<EOD\n") - 1, func->ud);
- func->ucl_emitter_append_len (str, size, func->ud);
- func->ucl_emitter_append_len ("\nEOD", sizeof ("\nEOD") - 1, func->ud);
- }
-
- /*
- * Generic utstring output
- */
- static int
- ucl_utstring_append_character (unsigned char c, size_t len, void *ud)
- {
- UT_string *buf = ud;
-
- if (len == 1) {
- utstring_append_c (buf, c);
- }
- else {
- utstring_reserve (buf, len + 1);
- memset (&buf->d[buf->i], c, len);
- buf->i += len;
- buf->d[buf->i] = '\0';
- }
-
- return 0;
- }
-
- static int
- ucl_utstring_append_len (const unsigned char *str, size_t len, void *ud)
- {
- UT_string *buf = ud;
-
- utstring_append_len (buf, str, len);
-
- return 0;
- }
-
- static int
- ucl_utstring_append_int (int64_t val, void *ud)
- {
- UT_string *buf = ud;
-
- utstring_printf (buf, "%jd", (intmax_t)val);
- return 0;
- }
-
- static int
- ucl_utstring_append_double (double val, void *ud)
- {
- UT_string *buf = ud;
- const double delta = 0.0000001;
-
- if (val == (double)(int)val) {
- utstring_printf (buf, "%.1lf", val);
- }
- else if (fabs (val - (double)(int)val) < delta) {
- /* Write at maximum precision */
- utstring_printf (buf, "%.*lg", DBL_DIG, val);
- }
- else {
- utstring_printf (buf, "%lf", val);
- }
-
- return 0;
- }
-
- /*
- * Generic file output
- */
- static int
- ucl_file_append_character (unsigned char c, size_t len, void *ud)
- {
- FILE *fp = ud;
-
- while (len --) {
- fputc (c, fp);
- }
-
- return 0;
- }
-
- static int
- ucl_file_append_len (const unsigned char *str, size_t len, void *ud)
- {
- FILE *fp = ud;
-
- fwrite (str, len, 1, fp);
-
- return 0;
- }
-
- static int
- ucl_file_append_int (int64_t val, void *ud)
- {
- FILE *fp = ud;
-
- fprintf (fp, "%jd", (intmax_t)val);
-
- return 0;
- }
-
- static int
- ucl_file_append_double (double val, void *ud)
- {
- FILE *fp = ud;
- const double delta = 0.0000001;
-
- if (val == (double)(int)val) {
- fprintf (fp, "%.1lf", val);
- }
- else if (fabs (val - (double)(int)val) < delta) {
- /* Write at maximum precision */
- fprintf (fp, "%.*lg", DBL_DIG, val);
- }
- else {
- fprintf (fp, "%lf", val);
- }
-
- return 0;
- }
-
- /*
- * Generic file descriptor writing functions
- */
- static int
- ucl_fd_append_character (unsigned char c, size_t len, void *ud)
- {
- int fd = *(int *)ud;
- unsigned char *buf;
-
- if (len == 1) {
- return write (fd, &c, 1);
- }
- else {
- buf = malloc (len);
- if (buf == NULL) {
- /* Fallback */
- while (len --) {
- if (write (fd, &c, 1) == -1) {
- return -1;
- }
- }
- }
- else {
- memset (buf, c, len);
- if (write (fd, buf, len) == -1) {
- free(buf);
- return -1;
- }
- free (buf);
- }
- }
-
- return 0;
- }
-
- static int
- ucl_fd_append_len (const unsigned char *str, size_t len, void *ud)
- {
- int fd = *(int *)ud;
-
- return write (fd, str, len);
- }
-
- static int
- ucl_fd_append_int (int64_t val, void *ud)
- {
- int fd = *(int *)ud;
- char intbuf[64];
-
- snprintf (intbuf, sizeof (intbuf), "%jd", (intmax_t)val);
- return write (fd, intbuf, strlen (intbuf));
- }
-
- static int
- ucl_fd_append_double (double val, void *ud)
- {
- int fd = *(int *)ud;
- const double delta = 0.0000001;
- char nbuf[64];
-
- if (val == (double)(int)val) {
- snprintf (nbuf, sizeof (nbuf), "%.1lf", val);
- }
- else if (fabs (val - (double)(int)val) < delta) {
- /* Write at maximum precision */
- snprintf (nbuf, sizeof (nbuf), "%.*lg", DBL_DIG, val);
- }
- else {
- snprintf (nbuf, sizeof (nbuf), "%lf", val);
- }
-
- return write (fd, nbuf, strlen (nbuf));
- }
-
- struct ucl_emitter_functions*
- ucl_object_emit_memory_funcs (void **pmem)
- {
- struct ucl_emitter_functions *f;
- UT_string *s;
-
- f = calloc (1, sizeof (*f));
-
- if (f != NULL) {
- f->ucl_emitter_append_character = ucl_utstring_append_character;
- f->ucl_emitter_append_double = ucl_utstring_append_double;
- f->ucl_emitter_append_int = ucl_utstring_append_int;
- f->ucl_emitter_append_len = ucl_utstring_append_len;
- f->ucl_emitter_free_func = free;
- utstring_new (s);
- f->ud = s;
- *pmem = s->d;
- s->pd = pmem;
- }
-
- return f;
- }
-
- struct ucl_emitter_functions*
- ucl_object_emit_file_funcs (FILE *fp)
- {
- struct ucl_emitter_functions *f;
-
- f = calloc (1, sizeof (*f));
-
- if (f != NULL) {
- f->ucl_emitter_append_character = ucl_file_append_character;
- f->ucl_emitter_append_double = ucl_file_append_double;
- f->ucl_emitter_append_int = ucl_file_append_int;
- f->ucl_emitter_append_len = ucl_file_append_len;
- f->ucl_emitter_free_func = NULL;
- f->ud = fp;
- }
-
- return f;
- }
-
- struct ucl_emitter_functions*
- ucl_object_emit_fd_funcs (int fd)
- {
- struct ucl_emitter_functions *f;
- int *ip;
-
- f = calloc (1, sizeof (*f));
-
- if (f != NULL) {
- ip = malloc (sizeof (fd));
- if (ip == NULL) {
- free (f);
- return NULL;
- }
-
- memcpy (ip, &fd, sizeof (fd));
- f->ucl_emitter_append_character = ucl_fd_append_character;
- f->ucl_emitter_append_double = ucl_fd_append_double;
- f->ucl_emitter_append_int = ucl_fd_append_int;
- f->ucl_emitter_append_len = ucl_fd_append_len;
- f->ucl_emitter_free_func = free;
- f->ud = ip;
- }
-
- return f;
- }
-
- void
- ucl_object_emit_funcs_free (struct ucl_emitter_functions *f)
- {
- if (f != NULL) {
- if (f->ucl_emitter_free_func != NULL) {
- f->ucl_emitter_free_func (f->ud);
- }
- free (f);
- }
- }
-
-
- unsigned char *
- ucl_object_emit_single_json (const ucl_object_t *obj)
- {
- UT_string *buf = NULL;
- unsigned char *res = NULL;
-
- if (obj == NULL) {
- return NULL;
- }
-
- utstring_new (buf);
-
- if (buf != NULL) {
- switch (obj->type) {
- case UCL_OBJECT:
- ucl_utstring_append_len ("object", 6, buf);
- break;
- case UCL_ARRAY:
- ucl_utstring_append_len ("array", 5, buf);
- break;
- case UCL_INT:
- ucl_utstring_append_int (obj->value.iv, buf);
- break;
- case UCL_FLOAT:
- case UCL_TIME:
- ucl_utstring_append_double (obj->value.dv, buf);
- break;
- case UCL_NULL:
- ucl_utstring_append_len ("null", 4, buf);
- break;
- case UCL_BOOLEAN:
- if (obj->value.iv) {
- ucl_utstring_append_len ("true", 4, buf);
- }
- else {
- ucl_utstring_append_len ("false", 5, buf);
- }
- break;
- case UCL_STRING:
- ucl_utstring_append_len (obj->value.sv, obj->len, buf);
- break;
- case UCL_USERDATA:
- ucl_utstring_append_len ("userdata", 8, buf);
- break;
- }
- res = utstring_body (buf);
- free (buf);
- }
-
- return res;
- }
-
- #define LONG_STRING_LIMIT 80
-
- bool
- ucl_maybe_long_string (const ucl_object_t *obj)
- {
- if (obj->len > LONG_STRING_LIMIT || (obj->flags & UCL_OBJECT_MULTILINE)) {
- /* String is long enough, so search for newline characters in it */
- if (memchr (obj->value.sv, '\n', obj->len) != NULL) {
- return true;
- }
- }
-
- return false;
- }
|