30d2e54dab
o copy component audio_board from ADF and create custom component from it o copy component audio_hal from ADF and create custom component from it o copy component audio_sal from ADF and create custom component from it o copy component esp_peripherals from ADF and create custom component from it - add fLaC support through xiph's original repository as a git module
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
#include "audio_error.h"
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#include "audio_mem.h"
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#include "esp_log.h"
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#include <ctype.h>
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#include <string.h>
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static char *TAG = "AUDIO_URL";
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static unsigned char
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char_to_hex (unsigned char x)
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{
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return x > 9 ? x + 0x37 : x + 0x30;
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}
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char *
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audio_url_encode (const char *str)
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{
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int out_len = (strlen (str) + 1) * 3;
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char *final = audio_malloc (out_len);
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AUDIO_MEM_CHECK (TAG, final, return NULL);
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char *tmp = final;
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for (size_t i = 0; i < strlen (str); i++)
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{
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if (isalnum ((unsigned char)str[i]) || (str[i] == '-') || (str[i] == '_')
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|| (str[i] == '.') || (str[i] == '!') || (str[i] == '@')
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|| (str[i] == '#') || (str[i] == '$') || (str[i] == '&')
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|| (str[i] == '*') || (str[i] == '(') || (str[i] == ')')
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|| (str[i] == '=') || (str[i] == ':') || (str[i] == '/')
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|| (str[i] == ',') || (str[i] == ';') || (str[i] == '?')
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|| (str[i] == '+') || (str[i] == '\'') || (str[i] == '~'))
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{
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*final++ = str[i];
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}
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else
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{
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*final++ = '%';
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*final++ = char_to_hex ((unsigned char)str[i] >> 4);
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*final++ = char_to_hex ((unsigned char)str[i] % 16);
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}
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}
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*final = 0;
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return tmp;
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}
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char *
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audio_url_decode (const char *str)
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{
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char *final = audio_malloc (strlen (str) + 1);
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AUDIO_MEM_CHECK (TAG, final, return NULL);
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char *tmp = final;
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while (*str)
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{
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if (*str == '%')
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{
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char buffer[3] = { str[1], str[2], 0 };
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*final++ = strtol (buffer, NULL, 16);
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str += 3;
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}
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else
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{
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*final++ = *str++;
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}
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}
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*final = 0;
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return tmp;
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}
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