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218 lines
7.5 KiB
C++
218 lines
7.5 KiB
C++
/**
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* Copyright (c) 2013, Timothy Stack
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*
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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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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''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 THE REGENTS OR CONTRIBUTORS 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 ON
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* 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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* @file yajlpp.cc
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*/
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#include "config.h"
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#include "yajlpp.hh"
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int yajlpp_parse_context::map_start(void *ctx)
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{
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yajlpp_parse_context *ypc = (yajlpp_parse_context *)ctx;
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int retval = 1;
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ypc->ypc_path_index_stack.push_back(ypc->ypc_path.size() - 1);
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if (ypc->ypc_path.size() > 1 &&
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ypc->ypc_path[ypc->ypc_path.size() - 2] == '#') {
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ypc->ypc_array_index.back() += 1;
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}
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if (ypc->ypc_alt_callbacks.yajl_start_map != NULL) {
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retval = ypc->ypc_alt_callbacks.yajl_start_map(ypc);
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}
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return retval;
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}
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int yajlpp_parse_context::map_key(void *ctx,
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const unsigned char *key,
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size_t len)
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{
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yajlpp_parse_context *ypc = (yajlpp_parse_context *)ctx;
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int start, retval = 1;
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ypc->ypc_path.resize(ypc->ypc_path_index_stack.back());
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ypc->ypc_path.push_back('/');
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start = ypc->ypc_path.size();
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ypc->ypc_path.resize(ypc->ypc_path.size() + len);
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memcpy(&ypc->ypc_path[start], key, len);
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ypc->ypc_path.push_back('\0');
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if (ypc->ypc_alt_callbacks.yajl_map_key != NULL) {
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retval = ypc->ypc_alt_callbacks.yajl_map_key(ctx, key, len);
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}
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if (ypc->ypc_handlers != NULL) {
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ypc->update_callbacks();
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}
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return retval;
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}
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void yajlpp_parse_context::update_callbacks(void)
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{
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if (this->ypc_handlers == NULL) {
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return;
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}
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pcre_input pi(&this->ypc_path[0], 0, this->ypc_path.size() - 1);
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this->ypc_callbacks = DEFAULT_CALLBACKS;
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for (int lpc = 0; this->ypc_handlers[lpc].jph_path[0]; lpc++) {
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const json_path_handler &jph = this->ypc_handlers[lpc];
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pi.reset(&this->ypc_path[0], 0, this->ypc_path.size() - 1);
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if (jph.jph_regex.match(this->ypc_pcre_context, pi)) {
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if (jph.jph_callbacks.yajl_null != NULL)
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this->ypc_callbacks.yajl_null = jph.jph_callbacks.yajl_null;
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if (jph.jph_callbacks.yajl_boolean != NULL)
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this->ypc_callbacks.yajl_boolean = jph.jph_callbacks.yajl_boolean;
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if (jph.jph_callbacks.yajl_integer != NULL)
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this->ypc_callbacks.yajl_integer = jph.jph_callbacks.yajl_integer;
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if (jph.jph_callbacks.yajl_double != NULL)
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this->ypc_callbacks.yajl_double = jph.jph_callbacks.yajl_double;
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if (jph.jph_callbacks.yajl_string != NULL)
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this->ypc_callbacks.yajl_string = jph.jph_callbacks.yajl_string;
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}
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}
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}
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int yajlpp_parse_context::map_end(void *ctx)
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{
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yajlpp_parse_context *ypc = (yajlpp_parse_context *)ctx;
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int retval = 1;
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ypc->ypc_path.resize(ypc->ypc_path_index_stack.back());
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ypc->ypc_path.push_back('\0');
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ypc->ypc_path_index_stack.pop_back();
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if (ypc->ypc_alt_callbacks.yajl_end_map != NULL) {
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retval = ypc->ypc_alt_callbacks.yajl_end_map(ctx);
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}
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ypc->update_callbacks();
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return retval;
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}
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int yajlpp_parse_context::array_start(void *ctx)
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{
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yajlpp_parse_context *ypc = (yajlpp_parse_context *)ctx;
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int retval = 1;
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ypc->ypc_path_index_stack.push_back(ypc->ypc_path.size() - 1);
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ypc->ypc_path[ypc->ypc_path.size() - 1] = '#';
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ypc->ypc_path.push_back('\0');
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ypc->ypc_array_index.push_back(-1);
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if (ypc->ypc_alt_callbacks.yajl_start_array != NULL) {
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retval = ypc->ypc_alt_callbacks.yajl_start_array(ctx);
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}
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ypc->update_callbacks();
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return retval;
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}
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int yajlpp_parse_context::array_end(void *ctx)
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{
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yajlpp_parse_context *ypc = (yajlpp_parse_context *)ctx;
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int retval = 1;
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ypc->ypc_path.resize(ypc->ypc_path_index_stack.back());
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ypc->ypc_path.push_back('\0');
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ypc->ypc_path_index_stack.pop_back();
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ypc->ypc_array_index.pop_back();
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if (ypc->ypc_alt_callbacks.yajl_end_array != NULL) {
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retval = ypc->ypc_alt_callbacks.yajl_end_array(ctx);
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}
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ypc->update_callbacks();
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return retval;
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}
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int yajlpp_parse_context::handle_unused(void *ctx)
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{
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yajlpp_parse_context *ypc = (yajlpp_parse_context *)ctx;
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if (ypc->ypc_ignore_unused) {
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return 1;
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}
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fprintf(stderr, "warning:%s:%s:unexpected data, expecting one of the following data types --\n",
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ypc->ypc_source.c_str(),
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&ypc->ypc_path[0]);
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if (ypc->ypc_callbacks.yajl_boolean != (int (*)(void *, int))yajlpp_parse_context::handle_unused) {
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fprintf(stderr, "warning:%s:%s: boolean\n",
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ypc->ypc_source.c_str(), &ypc->ypc_path[0]);
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}
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if (ypc->ypc_callbacks.yajl_integer != (int (*)(void *, long long))yajlpp_parse_context::handle_unused) {
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fprintf(stderr, "warning:%s:%s: integer\n",
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ypc->ypc_source.c_str(), &ypc->ypc_path[0]);
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}
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if (ypc->ypc_callbacks.yajl_double != (int (*)(void *, double))yajlpp_parse_context::handle_unused) {
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fprintf(stderr, "warning:%s:%s: float\n",
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ypc->ypc_source.c_str(), &ypc->ypc_path[0]);
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}
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if (ypc->ypc_callbacks.yajl_string != (int (*)(void *, const unsigned char *, size_t))yajlpp_parse_context::handle_unused) {
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fprintf(stderr, "warning:%s:%s: string\n",
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ypc->ypc_source.c_str(), &ypc->ypc_path[0]);
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}
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fprintf(stderr, "warning:%s:%s:accepted paths --\n",
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ypc->ypc_source.c_str(), &ypc->ypc_path[0]);
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for (int lpc = 0; ypc->ypc_handlers[lpc].jph_path[0]; lpc++) {
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fprintf(stderr, "warning:%s:%s: %s\n",
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ypc->ypc_source.c_str(),
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&ypc->ypc_path[0],
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ypc->ypc_handlers[lpc].jph_path);
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}
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return 1;
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}
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const yajl_callbacks yajlpp_parse_context::DEFAULT_CALLBACKS = {
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yajlpp_parse_context::handle_unused,
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(int (*)(void *, int))yajlpp_parse_context::handle_unused,
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(int (*)(void *, long long))yajlpp_parse_context::handle_unused,
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(int (*)(void *, double))yajlpp_parse_context::handle_unused,
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NULL,
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(int (*)(void *, const unsigned char *, size_t))
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yajlpp_parse_context::handle_unused,
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yajlpp_parse_context::map_start,
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yajlpp_parse_context::map_key,
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yajlpp_parse_context::map_end,
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yajlpp_parse_context::array_start,
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yajlpp_parse_context::array_end,
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};
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