diff options
Diffstat (limited to 'test/core/util/parse_hexstring.c')
-rw-r--r-- | test/core/util/parse_hexstring.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/test/core/util/parse_hexstring.c b/test/core/util/parse_hexstring.c new file mode 100644 index 0000000000..888d03bc68 --- /dev/null +++ b/test/core/util/parse_hexstring.c @@ -0,0 +1,70 @@ +/* + * + * Copyright 2014, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "test/core/util/parse_hexstring.h" +#include <grpc/support/log.h> + +gpr_slice parse_hexstring(const char *hexstring) { + int nibbles = 0; + const char *p = 0; + gpr_uint8 *out; + gpr_uint8 temp; + gpr_slice slice; + + for (p = hexstring; *p; p++) { + nibbles += (*p >= '0' && *p <= '9') || (*p >= 'a' && *p <= 'f'); + } + + GPR_ASSERT((nibbles & 1) == 0); + + slice = gpr_slice_malloc(nibbles / 2); + out = GPR_SLICE_START_PTR(slice); + + nibbles = 0; + temp = 0; + for (p = hexstring; *p; p++) { + if (*p >= '0' && *p <= '9') { + temp = (temp << 4) | (*p - '0'); + nibbles++; + } else if (*p >= 'a' && *p <= 'f') { + temp = (temp << 4) | (*p - 'a' + 10); + nibbles++; + } + if (nibbles == 2) { + *out++ = temp; + nibbles = 0; + } + } + + return slice; +} |