| Index: ppapi/native_client/src/trusted/plugin/file_utils.cc
|
| diff --git a/ppapi/native_client/src/trusted/plugin/file_utils.cc b/ppapi/native_client/src/trusted/plugin/file_utils.cc
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..50600a2a201e1e5c6f3a16c0d5a9c12b26afe743
|
| --- /dev/null
|
| +++ b/ppapi/native_client/src/trusted/plugin/file_utils.cc
|
| @@ -0,0 +1,77 @@
|
| +// Copyright (c) 2013 The Chromium Authors. All rights reserved.
|
| +// Use of this source code is governed by a BSD-style license that can be
|
| +// found in the LICENSE file.
|
| +
|
| +// Some common file utilities for plugin code.
|
| +
|
| +#include "native_client/src/trusted/plugin/file_utils.h"
|
| +
|
| +#include <fcntl.h>
|
| +#include <stdio.h>
|
| +#include <stdlib.h>
|
| +
|
| +#include <sys/stat.h>
|
| +#include <sys/types.h>
|
| +
|
| +#include "native_client/src/include/nacl_scoped_ptr.h"
|
| +#include "native_client/src/include/portability_io.h"
|
| +#include "native_client/src/include/portability_string.h"
|
| +
|
| +
|
| +namespace plugin {
|
| +namespace file_utils {
|
| +
|
| +StatusCode SlurpFile(int32_t fd,
|
| + nacl::string& out_buf,
|
| + size_t max_size_to_read) {
|
| + struct stat stat_buf;
|
| + if (fstat(fd, &stat_buf) != 0) {
|
| + CLOSE(fd);
|
| + return PLUGIN_FILE_ERROR_STAT;
|
| + }
|
| +
|
| + // Figure out how large a buffer we need to slurp the whole file (with a
|
| + // '\0' at the end).
|
| + size_t bytes_to_read = static_cast<size_t>(stat_buf.st_size);
|
| + if (bytes_to_read > max_size_to_read - 1) {
|
| + CLOSE(fd);
|
| + return PLUGIN_FILE_ERROR_FILE_TOO_LARGE;
|
| + }
|
| +
|
| + FILE* input_file = fdopen(fd, "rb");
|
| + if (!input_file) {
|
| + CLOSE(fd);
|
| + return PLUGIN_FILE_ERROR_OPEN;
|
| + }
|
| + // From here on, closing input_file will automatically close fd.
|
| +
|
| + nacl::scoped_array<char> buffer(new char[bytes_to_read + 1]);
|
| + if (buffer == NULL) {
|
| + fclose(input_file);
|
| + return PLUGIN_FILE_ERROR_MEM_ALLOC;
|
| + }
|
| +
|
| + size_t total_bytes_read = 0;
|
| + while (bytes_to_read > 0) {
|
| + size_t bytes_this_read = fread(&buffer[total_bytes_read],
|
| + sizeof(char),
|
| + bytes_to_read,
|
| + input_file);
|
| + if (bytes_this_read < bytes_to_read && (feof(input_file) ||
|
| + ferror(input_file))) {
|
| + fclose(input_file);
|
| + return PLUGIN_FILE_ERROR_READ;
|
| + }
|
| + total_bytes_read += bytes_this_read;
|
| + bytes_to_read -= bytes_this_read;
|
| + }
|
| +
|
| + fclose(input_file);
|
| + buffer[total_bytes_read] = '\0';
|
| + out_buf = buffer.get();
|
| + return PLUGIN_FILE_SUCCESS;
|
| +}
|
| +
|
| +} // namespace file_utils
|
| +} // namespace plugin
|
| +
|
|
|