ESP-IDF
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Outline
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include "http_utils.h"
#define mem_check
http_utils_join_string(const char *, size_t, const char *, size_t)
http_utils_assign_string(char **, const char *, int)
http_utils_append_string(char **, const char *, int)
http_utils_trim_whitespace(char **)
http_utils_get_string_between(const char *, const char *, const char *)
http_utils_get_string_after(const char *, const char *)
http_utils_str_starts_with(const char *, const char *)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_http_client/lib/http_utils.c
 
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/* * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <string.h> #include <ctype.h> #include <stdlib.h> #include <stdio.h> #include <assert.h> #include "http_utils.h"6 includes #ifndef mem_check #define mem_check(x) assert(x) #endif char *http_utils_join_string(const char *first_str, size_t len_first, const char *second_str, size_t len_second) { size_t first_str_len = len_first > 0 ? len_first : strlen(first_str); size_t 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; }{ ... } char *http_utils_append_string(char **str, const char *new_str, int len) { int l = len; int old_len = 0; char *old_str = *str; if (new_str != NULL) { if (l < 0) { l = strlen(new_str); }{...} if (old_str) { old_len = strlen(old_str); old_str = realloc(old_str, old_len + l + 1); mem_check(old_str); old_str[old_len + l] = 0; }{...} else { old_str = calloc(1, l + 1); mem_check(old_str); }{...} memcpy(old_str + old_len, 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 = strcasestr(str, begin); char *ret = NULL; if (found) { found += strlen(begin); char *found_end = strcasestr(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; }{ ... } char *http_utils_get_string_after(const char *str, const char *begin) { char *found = strcasestr(str, begin); char *ret = NULL; if (found) { found += strlen(begin); char *found_end = (char *)str + strlen(str); 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 (tolower(str[i]) != tolower(start[i])) { return 1; }{...} }{...} return 0; }{ ... }
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