| /* |
| * |
| * Copyright 2015, 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 "src/core/lib/slice/slice_string_helpers.h" |
| |
| #include <string.h> |
| |
| #include <grpc/support/log.h> |
| |
| #include "src/core/lib/support/string.h" |
| |
| char *grpc_dump_slice(grpc_slice s, uint32_t flags) { |
| return gpr_dump((const char *)GRPC_SLICE_START_PTR(s), GRPC_SLICE_LENGTH(s), |
| flags); |
| } |
| |
| /** Finds the initial (\a begin) and final (\a end) offsets of the next |
| * substring from \a str + \a read_offset until the next \a sep or the end of \a |
| * str. |
| * |
| * Returns 1 and updates \a begin and \a end. Returns 0 otherwise. */ |
| static int slice_find_separator_offset(const grpc_slice str, const char *sep, |
| const size_t read_offset, size_t *begin, |
| size_t *end) { |
| size_t i; |
| const uint8_t *str_ptr = GRPC_SLICE_START_PTR(str) + read_offset; |
| const size_t str_len = GRPC_SLICE_LENGTH(str) - read_offset; |
| const size_t sep_len = strlen(sep); |
| if (str_len < sep_len) { |
| return 0; |
| } |
| |
| for (i = 0; i <= str_len - sep_len; i++) { |
| if (memcmp(str_ptr + i, sep, sep_len) == 0) { |
| *begin = read_offset; |
| *end = read_offset + i; |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| void grpc_slice_split(grpc_slice str, const char *sep, grpc_slice_buffer *dst) { |
| const size_t sep_len = strlen(sep); |
| size_t begin, end; |
| |
| GPR_ASSERT(sep_len > 0); |
| |
| if (slice_find_separator_offset(str, sep, 0, &begin, &end) != 0) { |
| do { |
| grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end)); |
| } while (slice_find_separator_offset(str, sep, end + sep_len, &begin, |
| &end) != 0); |
| grpc_slice_buffer_add_indexed( |
| dst, grpc_slice_sub(str, end + sep_len, GRPC_SLICE_LENGTH(str))); |
| } else { /* no sep found, add whole input */ |
| grpc_slice_buffer_add_indexed(dst, grpc_slice_ref(str)); |
| } |
| } |