Move plugin/srpc contents to the more appropriately named plugin/common....

src/trusted/plugin/srpc/string_encoding.cc

-/*
- * Copyright 2010 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- */
-
-#include "native_client/src/trusted/plugin/srpc/string_encoding.h"
-
-#include "native_client/src/include/nacl_platform.h"
-
-
-namespace plugin {
-
-// NPAPI requires us to encode byte strings as UTF-8.  Unfortunately
-// this is rather inefficient, in terms of both space and time.
-
-bool ByteStringAsUTF8(const char* input, size_t input_byte_count,
-                      char** result, size_t* result_byte_count) {
-  // UTF-8 encoding may result in a 2x size increase at the most.
-  // TODO(mseaborn): We could do a pre-scan to get the real size.
-  // If we wanted to be faster, we could do a word-by-word pre-scan
-  // to check for top-bit-set characters.
-  size_t max_output_size = input_byte_count * 2;
-  // We include a null terminator for convenience.
-  char* output = reinterpret_cast<char*>(malloc(max_output_size + 1));
-  if (output == NULL) {
-    return false;
-  }
-  char* dest_ptr = output;
-  for(size_t i = 0; i < input_byte_count; i++) {
-    unsigned char ch = input[i];
-    if (ch < 128) {
-      // Code results in a one byte encoding.
-      *dest_ptr++ = ch;
-    } else {
-      // Code results in a two byte encoding.
-      *dest_ptr++ = 0xc0 | (ch >> 6);   /* Top 2 bits */
-      *dest_ptr++ = 0x80 | (ch & 0x3f); /* Bottom 6 bits */
-    }
-  }
-  *dest_ptr = 0;
-  *result = output;
-  *result_byte_count = dest_ptr - output;
-  return true;
-}
-
-bool ByteStringFromUTF8(const char* input, size_t input_byte_count,
-                        char** result, size_t* result_byte_count) {
-  // The output cannot be larger than the input.
-  char* output = reinterpret_cast<char*>(malloc(input_byte_count + 1));
-  if (output == NULL) {
-    return NULL;
-  }
-  char* dest_ptr = output;
-  size_t i;
-  for(i = 0; i < input_byte_count; ) {
-    unsigned char ch = input[i];
-    if ((ch & 0x80) == 0) {
-      // One byte encoding.
-      *dest_ptr++ = ch;
-      i++;
-    } else {
-      if (i == input_byte_count - 1) {
-        // Invalid UTF-8: incomplete sequence.
-        goto fail;
-      }
-      // Check that this is a two byte encoding.
-      // The first character must contain 110xxxxxb and the
-      // second must contain 10xxxxxxb.
-      unsigned char ch2 = input[i + 1];
-      if ((ch & 0xe0) != 0xc0) {
-        // >=2 byte encoding.
-        goto fail;
-      }
-      if ((ch2 & 0xc0) != 0x80) {
-        // Invalid UTF-8.
-        goto fail;
-      }
-      uint32_t value = (((uint32_t) ch & 0x1f) << 6) | ((uint32_t) ch2 & 0x3f);
-      if (value < 128) {
-        // Invalid UTF-8: overly long encoding.
-        goto fail;
-      }
-      if (value >= 0x100) {
-        // Overly large character.  Will not fit into a byte.
-        goto fail;
-      }
-      *dest_ptr++ = value;
-      i += 2;
-    }
-  }
-  *dest_ptr = 0;
-  *result = output;
-  *result_byte_count = dest_ptr - output;
-  return true;
- fail:
-  free(output);
-  return false;
-}
-
-}  // namespace plugin