Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / lib / slice / slice_string_helpers.cc

diff --git a/legacy-libs/grpc/deps/grpc/src/core/lib/slice/slice_string_helpers.cc b/legacy-libs/grpc/deps/grpc/src/core/lib/slice/slice_string_helpers.cc
new file mode 100644 (file)
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+++ b/legacy-libs/grpc/deps/grpc/src/core/lib/slice/slice_string_helpers.cc
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+/*
+ *
+ * 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;
+}