--- /dev/null
+/*
+ *
+ * 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 <grpc/support/port_platform.h>
+
+#include "src/core/lib/slice/slice_string_helpers.h"
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/gprpp/memory.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+char* grpc_dump_slice(const grpc_slice& s, uint32_t flags) {
+ return gpr_dump(reinterpret_cast<const char*> GRPC_SLICE_START_PTR(s),
+ GRPC_SLICE_LENGTH(s), flags);
+}
+
+grpc_slice grpc_dump_slice_to_slice(const grpc_slice& s, uint32_t flags) {
+ size_t len;
+ grpc_core::UniquePtr<char> ptr(
+ gpr_dump_return_len(reinterpret_cast<const char*> GRPC_SLICE_START_PTR(s),
+ GRPC_SLICE_LENGTH(s), flags, &len));
+ return grpc_slice_from_moved_buffer(std::move(ptr), len);
+}
+
+/** 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;
+}
+
+static void skip_leading_trailing_spaces(const uint8_t* str_buffer,
+ size_t* begin, size_t* end) {
+ while (*begin < *end && str_buffer[*begin] == ' ') {
+ (*begin)++;
+ }
+ while (*begin < *end && str_buffer[*end - 1] == ' ') {
+ (*end)--;
+ }
+}
+
+static void grpc_slice_split_inner(grpc_slice str, const char* sep,
+ grpc_slice_buffer* dst, bool no_space) {
+ const size_t sep_len = strlen(sep);
+ size_t begin, end;
+ const uint8_t* str_buffer = GRPC_SLICE_START_PTR(str);
+ size_t sep_pos;
+
+ GPR_ASSERT(sep_len > 0);
+
+ if (slice_find_separator_offset(str, sep, 0, &begin, &end) != 0) {
+ do {
+ sep_pos = end;
+ if (no_space) {
+ skip_leading_trailing_spaces(str_buffer, &begin, &end);
+ }
+ grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end));
+ } while (slice_find_separator_offset(str, sep, sep_pos + sep_len, &begin,
+ &end) != 0);
+ begin = sep_pos + sep_len;
+ end = GRPC_SLICE_LENGTH(str);
+ if (no_space) {
+ skip_leading_trailing_spaces(str_buffer, &begin, &end);
+ }
+ grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end));
+ } else { /* no sep found, add whole input */
+ begin = 0;
+ end = GRPC_SLICE_LENGTH(str);
+ if (no_space) {
+ skip_leading_trailing_spaces(str_buffer, &begin, &end);
+ }
+ grpc_slice_buffer_add_indexed(dst, grpc_slice_sub(str, begin, end));
+ }
+}
+
+void grpc_slice_split(grpc_slice str, const char* sep, grpc_slice_buffer* dst) {
+ grpc_slice_split_inner(str, sep, dst, false);
+}
+
+void grpc_slice_split_without_space(grpc_slice str, const char* sep,
+ grpc_slice_buffer* dst) {
+ grpc_slice_split_inner(str, sep, dst, true);
+}
+
+bool grpc_parse_slice_to_uint32(grpc_slice str, uint32_t* result) {
+ return gpr_parse_bytes_to_uint32(
+ reinterpret_cast<const char*> GRPC_SLICE_START_PTR(str),
+ GRPC_SLICE_LENGTH(str), result) != 0;
+}