Parametrize names of llc and ld nexes by reading them from the resource info JSON file.

ppapi/native_client/src/trusted/plugin/file_utils.cc

+// 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
+