2 * Copyright (c) 2004, Richard Levitte <richard@levitte.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <libfildef.h>
35 #include <lib$routines.h>
37 #include <str$routines.h>
44 /* Some compiler options hide EVMSERR. */
46 # define EVMSERR 65535 /* error for non-translatable VMS errors */
49 struct LP_dir_context_st
51 unsigned long VMS_context;
52 char filespec[ NAMX_MAXRSS+ 1];
53 char result[ NAMX_MAXRSS+ 1];
54 struct dsc$descriptor_d filespec_dsc;
55 struct dsc$descriptor_d result_dsc;
58 const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
63 unsigned long flags = 0;
65 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
66 #if __INITIAL_POINTER_SIZE == 64
67 # pragma pointer_size save
68 # pragma pointer_size 32
69 char *ctx_filespec_32p;
70 # pragma pointer_size restore
71 char ctx_filespec_32[ NAMX_MAXRSS+ 1];
72 #endif /* __INITIAL_POINTER_SIZE == 64 */
75 flags |= LIB$M_FIL_LONG_NAMES;
78 if (ctx == NULL || directory == NULL)
87 size_t filespeclen = strlen(directory);
88 char *filespec = NULL;
96 /* MUST be a VMS directory specification! Let's estimate if it is. */
97 if (directory[filespeclen-1] != ']'
98 && directory[filespeclen-1] != '>'
99 && directory[filespeclen-1] != ':')
105 filespeclen += 4; /* "*.*;" */
107 if (filespeclen > NAMX_MAXRSS)
109 errno = ENAMETOOLONG;
113 *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX));
119 memset(*ctx, '\0', sizeof(LP_DIR_CTX));
121 strcpy((*ctx)->filespec,directory);
122 strcat((*ctx)->filespec,"*.*;");
124 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
125 #if __INITIAL_POINTER_SIZE == 64
126 # define CTX_FILESPEC ctx_filespec_32p
127 /* Copy the file name to storage with a 32-bit pointer. */
128 ctx_filespec_32p = ctx_filespec_32;
129 strcpy( ctx_filespec_32p, (*ctx)->filespec);
130 #else /* __INITIAL_POINTER_SIZE == 64 */
131 # define CTX_FILESPEC (*ctx)->filespec
132 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
134 (*ctx)->filespec_dsc.dsc$w_length = filespeclen;
135 (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
136 (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S;
137 (*ctx)->filespec_dsc.dsc$a_pointer = CTX_FILESPEC;
140 (*ctx)->result_dsc.dsc$w_length = 0;
141 (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
142 (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
143 (*ctx)->result_dsc.dsc$a_pointer = 0;
145 status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc,
146 &(*ctx)->VMS_context, 0, 0, 0, &flags);
148 if (status == RMS$_NMF)
155 if(!$VMS_STATUS_SUCCESS(status))
162 /* Quick, cheap and dirty way to discard any device and directory,
163 since we only want file names */
164 l = (*ctx)->result_dsc.dsc$w_length;
165 p = (*ctx)->result_dsc.dsc$a_pointer;
169 if (*p == '^' && p[1] != '\0') /* Take care of ODS-5 escapes */
173 else if (*p == ':' || *p == '>' || *p == ']')
185 strncpy((*ctx)->result, r, l);
186 (*ctx)->result[l] = '\0';
187 str$free1_dx(&(*ctx)->result_dsc);
189 return (*ctx)->result;
192 int LP_find_file_end(LP_DIR_CTX **ctx)
194 if (ctx != NULL && *ctx != NULL)
196 int status = lib$find_file_end(&(*ctx)->VMS_context);
200 if(!$VMS_STATUS_SUCCESS(status))