Function dtdCopy

Utilities/cmexpat/lib/xmlparse.c:7592–7726

Do a deep copy of the DTD. Return 0 for out of memory, non-zero otherwise. The new DTD has already been initialized. */

   The new DTD has already been initialized.
*/
static int
dtdCopy(XML_Parser oldParser, DTD *newDtd, const DTD *oldDtd,
        XML_Parser parser) {
  HASH_TABLE_ITER iter;

  /* Copy the prefix table. */

  hashTableIterInit(&iter, &(oldDtd->prefixes));
  for (;;) {
    const XML_Char *name;
    const PREFIX *oldP = (PREFIX *)hashTableIterNext(&iter);
    if (! oldP)
      break;
    name = poolCopyString(&(newDtd->pool), oldP->name);
    if (! name)
      return 0;
    if (! lookup(oldParser, &(newDtd->prefixes), name, sizeof(PREFIX)))
      return 0;
  }

  hashTableIterInit(&iter, &(oldDtd->attributeIds));

  /* Copy the attribute id table. */

  for (;;) {
    ATTRIBUTE_ID *newA;
    const XML_Char *name;
    const ATTRIBUTE_ID *oldA = (ATTRIBUTE_ID *)hashTableIterNext(&iter);

    if (! oldA)
      break;
    /* Remember to allocate the scratch byte before the name. */
    if (! poolAppendChar(&(newDtd->pool), XML_T('\0')))
      return 0;
    name = poolCopyString(&(newDtd->pool), oldA->name);
    if (! name)
      return 0;
    ++name;
    newA = (ATTRIBUTE_ID *)lookup(oldParser, &(newDtd->attributeIds), name,
                                  sizeof(ATTRIBUTE_ID));
    if (! newA)
      return 0;
    newA->maybeTokenized = oldA->maybeTokenized;
    if (oldA->prefix) {
      newA->xmlns = oldA->xmlns;
      if (oldA->prefix == &oldDtd->defaultPrefix)
        newA->prefix = &newDtd->defaultPrefix;
      else
        newA->prefix = (PREFIX *)lookup(oldParser, &(newDtd->prefixes),
                                        oldA->prefix->name, 0);
    }
  }

  /* Copy the element type table. */

  hashTableIterInit(&iter, &(oldDtd->elementTypes));

  for (;;) {