Function unzGetGlobalComment

src/Setup/unzip.cpp:3696–3711

Get the global comment string of the ZipFile, in the szComment buffer. uSizeBuf is the size of the szComment buffer. return the number of byte copied or an error code <0

//  uSizeBuf is the size of the szComment buffer.
//  return the number of byte copied or an error code <0
int unzGetGlobalComment (unzFile file, char *szComment, uLong uSizeBuf)
{ //int err=UNZ_OK;
  unz_s* s;
  uLong uReadThis ;
  if (file==NULL) return UNZ_PARAMERROR;
  s=(unz_s*)file;
  uReadThis = uSizeBuf;
  if (uReadThis>s->gi.size_comment) uReadThis = s->gi.size_comment;
  if (lufseek(s->file,s->central_pos+22,SEEK_SET)!=0) return UNZ_ERRNO;
  if (uReadThis>0)
  { *szComment='\0';
    if (lufread(szComment,(uInt)uReadThis,1,s->file)!=1) return UNZ_ERRNO;
  }
  if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) *(szComment+s->gi.size_comment)='\0';
  return (int)uReadThis;
}