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Small function to make formatting into memory of uint easier

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This commit is contained in:
Alexandre Paillier
2022-03-24 15:19:41 +01:00
parent e3a8e4ccd2
commit 420afdf958
1 changed files with 24 additions and 7 deletions
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31
src_features/signMessageEIP712/entrypoint.c
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@@ -334,6 +334,28 @@ bool set_struct_field(const uint8_t *const data)
return true;
}
/**
* Format an unsigned number up to 32-bit into memory into an ASCII string.
*
* @param[in] value Value to write in memory
* @param[in] max_chars Maximum number of characters that could be written
*
* @return how many characters have been written in memory
*/
uint8_t format_uint_into_mem(uint32_t value, uint8_t max_chars)
{
char *ptr;
uint8_t written_chars;
if ((ptr = mem_alloc(sizeof(char) * max_chars)) == NULL)
{
return 0;
}
written_chars = sprintf(ptr, "%u", value);
mem_dealloc(max_chars - written_chars); // in case it ended up being less
return written_chars;
}
void get_struct_type_string(const uint8_t *const ptr,
const uint8_t *const struct_name,
uint8_t struct_name_length)
@@ -351,7 +373,6 @@ void get_struct_type_string(const uint8_t *const ptr,
uint8_t lvls_count;
const uint8_t *lvl_ptr;
uint8_t array_size;
uint8_t formatted_length;
// set length
typestr_length = mem_alloc(sizeof(uint16_t));
@@ -394,9 +415,7 @@ void get_struct_type_string(const uint8_t *const ptr,
break;
}
// max value = 256, 3 characters max
formatted_length = sprintf(mem_alloc(sizeof(char) * 3), "%u", field_size);
mem_dealloc(3 - formatted_length); // in case it used less
*typestr_length += formatted_length;
*typestr_length += format_uint_into_mem(field_size, 3);
}
if (struct_field_is_array(field_ptr))
@@ -412,9 +431,7 @@ void get_struct_type_string(const uint8_t *const ptr,
break;
case ARRAY_FIXED_SIZE:
// max value = 255, 3 characters max
formatted_length = sprintf(mem_alloc(sizeof(char) * 3), "%u", array_size);
mem_dealloc(3 - formatted_length);
*typestr_length += formatted_length;
*typestr_length += format_uint_into_mem(array_size, 3);
break;
default:
// should not be in here :^)