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- // Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- #include <string.h>
- #include <ctype.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <assert.h>
- #include "http_utils.h"
- #ifndef mem_check
- #define mem_check(x) assert(x)
- #endif
- char *http_utils_join_string(const char *first_str, int len_first, const char *second_str, int len_second)
- {
- int first_str_len = len_first > 0 ? len_first : strlen(first_str);
- int second_str_len = len_second > 0 ? len_second : strlen(second_str);
- char *ret = NULL;
- if (first_str_len + second_str_len > 0) {
- ret = calloc(1, first_str_len + second_str_len + 1);
- mem_check(ret);
- memcpy(ret, first_str, first_str_len);
- memcpy(ret + first_str_len, second_str, second_str_len);
- }
- return ret;
- }
- char *http_utils_assign_string(char **str, const char *new_str, int len)
- {
- int l = len;
- if (new_str == NULL) {
- return NULL;
- }
- char *old_str = *str;
- if (l <= 0) {
- l = strlen(new_str);
- }
- if (old_str) {
- old_str = realloc(old_str, l + 1);
- mem_check(old_str);
- old_str[l] = 0;
- } else {
- old_str = calloc(1, l + 1);
- mem_check(old_str);
- }
- memcpy(old_str, new_str, l);
- *str = old_str;
- return old_str;
- }
- void http_utils_trim_whitespace(char **str)
- {
- char *end, *start;
- if (str == NULL) {
- return;
- }
- start = *str;
- if (start == NULL) {
- return;
- }
- // Trim leading space
- while (isspace((unsigned char)*start)) start ++;
- if (*start == 0) { // All spaces?
- **str = 0;
- return;
- }
- // Trim trailing space
- end = (char *)(start + strlen(start) - 1);
- while (end > start && isspace((unsigned char)*end)) {
- end--;
- }
- // Write new null terminator
- *(end + 1) = 0;
- memmove(*str, start, strlen(start) + 1);
- }
- char *http_utils_get_string_between(const char *str, const char *begin, const char *end)
- {
- char *found = strstr(str, begin);
- char *ret = NULL;
- if (found) {
- found += strlen(begin);
- char *found_end = strstr(found, end);
- if (found_end) {
- ret = calloc(1, found_end - found + 1);
- mem_check(ret);
- memcpy(ret, found, found_end - found);
- return ret;
- }
- }
- return NULL;
- }
- int http_utils_str_starts_with(const char *str, const char *start)
- {
- int i;
- int match_str_len = strlen(str);
- int start_len = strlen(start);
- if (start_len > match_str_len) {
- return -1;
- }
- for (i = 0; i < start_len; i++) {
- if (str[i] != start[i]) {
- return 1;
- }
- }
- return 0;
- }
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