| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include "src/core/lib/slice/slice_string_helpers.h" |
| |
| #include <string.h> |
| |
| #include <grpc/support/log.h> |
| |
| #include "src/core/lib/slice/slice_internal.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_internal(str)); |
| } |
| } |
| |
| bool grpc_parse_slice_to_uint32(grpc_slice str, uint32_t *result) { |
| return gpr_parse_bytes_to_uint32((const char *)GRPC_SLICE_START_PTR(str), |
| GRPC_SLICE_LENGTH(str), result) != 0; |
| } |