/* $LP: LPlib/source/LPdir_vms.c,v 1.20 2004/08/26 13:36:05 _cvs_levitte Exp $ */ /* * Copyright (c) 2004, Richard Levitte <richard@levitte.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <stddef.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <descrip.h> #include <namdef.h> #include <rmsdef.h> #include <libfildef.h> #include <lib$routines.h> #include <strdef.h> #include <str$routines.h> #include <stsdef.h> #ifndef LPDIR_H #include "LPdir.h" #endif /* Because some compiler options hide this macor */ #ifndef EVMSERR #define EVMSERR 65535 /* error for non-translatable VMS errors */ #endif struct LP_dir_context_st { unsigned long VMS_context; #ifdef NAML$C_MAXRSS char filespec[NAML$C_MAXRSS+1]; char result[NAML$C_MAXRSS+1]; #else char filespec[256]; char result[256]; #endif struct dsc$descriptor_d filespec_dsc; struct dsc$descriptor_d result_dsc; }; const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory) { int status; char *p, *r; size_t l; unsigned long flags = 0; #ifdef NAML$C_MAXRSS flags |= LIB$M_FIL_LONG_NAMES; #endif if (ctx == NULL || directory == NULL) { errno = EINVAL; return 0; } errno = 0; if (*ctx == NULL) { size_t filespeclen = strlen(directory); char *filespec = NULL; /* MUST be a VMS directory specification! Let's estimate if it is. */ if (directory[filespeclen-1] != ']' && directory[filespeclen-1] != '>' && directory[filespeclen-1] != ':') { errno = EINVAL; return 0; } filespeclen += 4; /* "*.*;" */ if (filespeclen > #ifdef NAML$C_MAXRSS NAML$C_MAXRSS #else 255 #endif ) { errno = ENAMETOOLONG; return 0; } *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX)); if (*ctx == NULL) { errno = ENOMEM; return 0; } memset(*ctx, '\0', sizeof(LP_DIR_CTX)); strcpy((*ctx)->filespec,directory); strcat((*ctx)->filespec,"*.*;"); (*ctx)->filespec_dsc.dsc$w_length = filespeclen; (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T; (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S; (*ctx)->filespec_dsc.dsc$a_pointer = (*ctx)->filespec; (*ctx)->result_dsc.dsc$w_length = 0; (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T; (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D; (*ctx)->result_dsc.dsc$a_pointer = 0; } (*ctx)->result_dsc.dsc$w_length = 0; (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T; (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D; (*ctx)->result_dsc.dsc$a_pointer = 0; status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc, &(*ctx)->VMS_context, 0, 0, 0, &flags); if (status == RMS$_NMF) { errno = 0; vaxc$errno = status; return NULL; } if(!$VMS_STATUS_SUCCESS(status)) { errno = EVMSERR; vaxc$errno = status; return NULL; } /* Quick, cheap and dirty way to discard any device and directory, since we only want file names */ l = (*ctx)->result_dsc.dsc$w_length; p = (*ctx)->result_dsc.dsc$a_pointer; r = p; for (; *p; p++) { if (*p == '^' && p[1] != '\0') /* Take care of ODS-5 escapes */ { p++; } else if (*p == ':' || *p == '>' || *p == ']') { l -= p + 1 - r; r = p + 1; } else if (*p == ';') { l = p - r; break; } } strncpy((*ctx)->result, r, l); (*ctx)->result[l] = '\0'; str$free1_dx(&(*ctx)->result_dsc); return (*ctx)->result; } int LP_find_file_end(LP_DIR_CTX **ctx) { if (ctx != NULL && *ctx != NULL) { int status = lib$find_file_end(&(*ctx)->VMS_context); free(*ctx); if(!$VMS_STATUS_SUCCESS(status)) { errno = EVMSERR; vaxc$errno = status; return 0; } return 1; } errno = EINVAL; return 0; }