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128 lines
4.6 KiB
C
128 lines
4.6 KiB
C
// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <expat.h>
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#include <string.h>
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#include "unity.h"
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typedef struct {
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int depth;
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char output[512];
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int output_off;
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} user_data_t;
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static void insert_space(user_data_t *user_data)
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{
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const char align_str[] = " ";
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TEST_ASSERT(sizeof(user_data->output) >= user_data->output_off);
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user_data->output[user_data->output_off++] = '\n';
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for (int i = 0; i < user_data->depth; i++) {
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for (int j = 0; j < strlen(align_str); ++j) {
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TEST_ASSERT(sizeof(user_data->output) >= user_data->output_off);
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user_data->output[user_data->output_off++] = align_str[j];
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}
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}
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}
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static void XMLCALL start_element(void *userData, const XML_Char *name, const XML_Char **atts)
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{
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user_data_t *user_data = (user_data_t *) userData;
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insert_space(user_data);
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const int ret = snprintf(user_data->output + user_data->output_off,
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sizeof(user_data->output) - user_data->output_off,
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"<%s>", name);
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TEST_ASSERT_EQUAL(strlen(name) + 2, ret); // 2 are the tag characters: "<>"
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user_data->output_off += ret;
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++user_data->depth;
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}
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static void XMLCALL end_element(void *userData, const XML_Char *name)
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{
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user_data_t *user_data = (user_data_t *) userData;
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--user_data->depth;
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insert_space(user_data);
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int ret = snprintf(user_data->output + user_data->output_off, sizeof(user_data->output) - user_data->output_off,
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"</%s>", name);
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TEST_ASSERT_EQUAL(strlen(name) + 3, ret); // 3 are the tag characters: "</>"
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user_data->output_off += ret;
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}
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static void data_handler(void *userData, const XML_Char *s, int len)
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{
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user_data_t *user_data = (user_data_t *) userData;
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insert_space(user_data);
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// s is not zero-terminated
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char tmp_str[len+1];
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strlcpy(tmp_str, s, len+1);
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int ret = snprintf(user_data->output + user_data->output_off, sizeof(user_data->output) - user_data->output_off,
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"%s", tmp_str);
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TEST_ASSERT_EQUAL(strlen(tmp_str), ret);
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user_data->output_off += ret;
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}
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TEST_CASE("Expat parses XML", "[expat]")
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{
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const char test_in[] = "<html><title>Page title</title><body><h>header</h><ol><li>A</li>"\
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"<li>B</li><li>C</li></ol></body></html>";
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const char test_expected[] = "\n"\
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"<html>\n"\
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" <title>\n"\
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" Page title\n"\
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" </title>\n"\
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" <body>\n"\
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" <h>\n"\
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" header\n"\
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" </h>\n"\
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" <ol>\n"\
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" <li>\n"\
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" A\n"\
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" </li>\n"\
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" <li>\n"\
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" B\n"\
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" </li>\n"\
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" <li>\n"\
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" C\n"\
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" </li>\n"\
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" </ol>\n"\
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" </body>\n"\
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"</html>";
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user_data_t user_data = {
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.depth = 0,
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.output = { '\0' },
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.output_off = 0
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};
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XML_Parser parser = XML_ParserCreate(NULL);
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XML_SetUserData(parser, &user_data);
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XML_SetElementHandler(parser, start_element, end_element);
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XML_SetCharacterDataHandler(parser, data_handler);
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TEST_ASSERT_NOT_EQUAL(XML_STATUS_ERROR, XML_Parse(parser, test_in, strlen(test_in), 1));
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XML_ParserFree(parser);
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TEST_ASSERT_EQUAL(0, user_data.depth); // all closing tags have been found
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TEST_ASSERT_EQUAL(strlen(test_expected), strlen(user_data.output));
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TEST_ASSERT_EQUAL_STRING(test_expected, user_data.output);
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}
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