HFSCatalogNodeID newFile()

in hfs/catalog.c [1021:1114]
77 lines of code
6 McCabe index (conditional complexity)

HFSCatalogNodeID newFile(const char* pathName, Volume* volume) {
  HFSPlusCatalogFolder* parentFolder;
  HFSPlusCatalogFile file;
  HFSPlusCatalogKey key;
  HFSPlusCatalogThread thread;
  
  uint32_t newFileID;
  
  int threadLength;
  
  char* path;
  char* name;
  char* curChar;
  char* lastSeparator;
  
  path = strdup(pathName);
  
  curChar = path;
  lastSeparator = NULL;
  
  while((*curChar) != '\0') {
    if((*curChar) == '/')
      lastSeparator = curChar;
    curChar++;
  }
  
  if(lastSeparator == NULL) {
    parentFolder = (HFSPlusCatalogFolder*) getRecordFromPath("/", volume, NULL, NULL);
    name = path;
  } else {
    name = lastSeparator + 1;
    *lastSeparator = '\0';
    parentFolder = (HFSPlusCatalogFolder*) getRecordFromPath(path, volume, NULL, NULL);
  }

  if(parentFolder == NULL || parentFolder->recordType != kHFSPlusFolderRecord) {
    free(path);
    free(parentFolder);
    return FALSE;
  }
  
  newFileID = volume->volumeHeader->nextCatalogID++;
  volume->volumeHeader->fileCount++;
  
  file.recordType = kHFSPlusFileRecord;
  file.flags = kHFSThreadExistsMask;
  file.reserved1 = 0;
  file.fileID = newFileID;
  file.createDate = UNIX_TO_APPLE_TIME(time(NULL));
  file.contentModDate = file.createDate;
  file.attributeModDate = file.createDate;
  file.accessDate = file.createDate;
  file.backupDate = file.createDate;
  file.permissions.ownerID = parentFolder->permissions.ownerID;
  file.permissions.groupID = parentFolder->permissions.groupID;
  file.permissions.adminFlags = 0;
  file.permissions.ownerFlags = 0;
  file.permissions.fileMode = S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
  file.permissions.special.iNodeNum = 0;
  memset(&file.userInfo, 0, sizeof(file.userInfo));
  memset(&file.finderInfo, 0, sizeof(file.finderInfo));
  file.textEncoding = 0;
  file.reserved2 = 0;
  memset(&file.dataFork, 0, sizeof(file.dataFork));
  memset(&file.resourceFork, 0, sizeof(file.resourceFork));
  
  key.parentID = parentFolder->folderID;
  ASCIIToUnicode(name, &key.nodeName);
  key.keyLength = sizeof(key.parentID) + STR_SIZE(key.nodeName);
  
  thread.recordType = kHFSPlusFileThreadRecord;
  thread.reserved = 0;
  thread.parentID = parentFolder->folderID;
  ASCIIToUnicode(name, &thread.nodeName);
  threadLength = sizeof(thread.recordType) + sizeof(thread.reserved) + sizeof(thread.parentID) + STR_SIZE(thread.nodeName);
  flipCatalogThread(&thread, TRUE);
  flipCatalogFile(&file);
  
  ASSERT(addToBTree(volume->catalogTree, (BTKey*)(&key), sizeof(HFSPlusCatalogFile), (unsigned char *)(&file)), "addToBTree");
  key.nodeName.length = 0;
  key.parentID = newFileID;
  key.keyLength = sizeof(key.parentID) + sizeof(key.nodeName.length);
  ASSERT(addToBTree(volume->catalogTree, (BTKey*)(&key), threadLength, (unsigned char *)(&thread)), "addToBTree");
  
  parentFolder->valence++;
  updateCatalog(volume, (HFSPlusCatalogRecord*) parentFolder);
  
  updateVolume(volume);
  
  free(parentFolder);
  free(path);
  
  return newFileID;
}