Mercurial > dovecot > core-2.2
view src/lib/hex-binary.c @ 1741:9df02b1533b3 HEAD
Removed most of the license comments from src/lib/*.c. It's just fine to
keep them in a single COPYING.MIT file. Changed a few other comments as well.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Wed, 27 Aug 2003 00:18:16 +0300 |
parents | fd8888f6f037 |
children | 05b8b6963b02 |
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/* Copyright (c) 2002-2003 Timo Sirainen */ #include "lib.h" #include "buffer.h" #include "hex-binary.h" const char *binary_to_hex(const unsigned char *data, size_t size) { char *buf, *p; size_t i; int value; /* @UNSAFE */ buf = p = t_malloc(size * 2 + 1); for (i = 0; i < size; i++) { value = data[i] >> 4; *p++ = value < 10 ? value + '0' : value - 10 + 'a'; value = data[i] & 0x0f; *p++ = value < 10 ? value + '0' : value - 10 + 'a'; } *p = '\0'; return buf; } int hex_to_binary(const char *data, buffer_t *dest) { int value; while (*data != '\0') { if (*data >= '0' && *data <= '9') value = (*data - '0') << 4; else if (*data >= 'a' && *data <= 'f') value = (*data - 'a' + 10) << 4; else if (*data >= 'A' && *data <= 'F') value = (*data - 'A' + 10) << 4; else return -1; data++; if (*data >= '0' && *data <= '9') value |= *data - '0'; else if (*data >= 'a' && *data <= 'f') value |= *data - 'a' + 10; else if (*data >= 'A' && *data <= 'F') value |= *data - 'A' + 10; else return -1; if (buffer_append_c(dest, value) != 1) return 0; data++; } return 1; }