--- /dev/null
+/*
+ * 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
+#include "vms_rms.h"
+
+/* Some compiler options hide EVMSERR. */
+#ifndef EVMSERR
+# define EVMSERR 65535 /* error for non-translatable VMS errors */
+#endif
+
+struct LP_dir_context_st
+{
+ unsigned long VMS_context;
+ char filespec[ NAMX_MAXRSS+ 1];
+ char result[ NAMX_MAXRSS+ 1];
+ 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;
+
+/* Arrange 32-bit pointer to (copied) string storage, if needed. */
+#if __INITIAL_POINTER_SIZE == 64
+# pragma pointer_size save
+# pragma pointer_size 32
+ char *ctx_filespec_32p;
+# pragma pointer_size restore
+ char ctx_filespec_32[ NAMX_MAXRSS+ 1];
+#endif /* __INITIAL_POINTER_SIZE == 64 */
+
+#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;
+
+ if (filespeclen == 0)
+ {
+ errno = ENOENT;
+ return 0;
+ }
+
+ /* 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 > NAMX_MAXRSS)
+ {
+ 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,"*.*;");
+
+/* Arrange 32-bit pointer to (copied) string storage, if needed. */
+#if __INITIAL_POINTER_SIZE == 64
+# define CTX_FILESPEC ctx_filespec_32p
+ /* Copy the file name to storage with a 32-bit pointer. */
+ ctx_filespec_32p = ctx_filespec_32;
+ strcpy( ctx_filespec_32p, (*ctx)->filespec);
+#else /* __INITIAL_POINTER_SIZE == 64 */
+# define CTX_FILESPEC (*ctx)->filespec
+#endif /* __INITIAL_POINTER_SIZE == 64 [else] */
+
+ (*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;
+
+ 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;
+}
+
projects / cassiopeia.git / blobdiff