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[md5] Optimize MD5::get_hex() to eliminate sprintf dependency (#10710)

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This commit is contained in:
J. Nick Koston
2025-09-14 17:35:18 -05:00
committed by Jesse Hills
parent 24f9550ce5
commit 2d9152d9b9
1 changed files with 3 additions and 2 deletions
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5
esphome/components/md5/md5.cpp
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@@ -1,4 +1,3 @@
#include <cstdio>
#include <cstring> #include <cstring>
#include "md5.h" #include "md5.h"
#ifdef USE_MD5 #ifdef USE_MD5
@@ -44,7 +43,9 @@ void MD5Digest::get_bytes(uint8_t *output) { memcpy(output, this->digest_, 16);
void MD5Digest::get_hex(char *output) { void MD5Digest::get_hex(char *output) {
for (size_t i = 0; i < 16; i++) { for (size_t i = 0; i < 16; i++) {
sprintf(output + i * 2, "%02x", this->digest_[i]); uint8_t byte = this->digest_[i];
output[i * 2] = format_hex_char(byte >> 4);
output[i * 2 + 1] = format_hex_char(byte & 0x0F);
} }
} }