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 {
50 unsigned long VMS_context;
51 char filespec[NAMX_MAXRSS + 1];
52 char result[NAMX_MAXRSS + 1];
53 struct dsc$descriptor_d filespec_dsc;
54 struct dsc$descriptor_d result_dsc;
57 const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
62 unsigned long flags = 0;
64 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
65 #if __INITIAL_POINTER_SIZE == 64
66 # pragma pointer_size save
67 # pragma pointer_size 32
68 char *ctx_filespec_32p;
69 # pragma pointer_size restore
70 char ctx_filespec_32[NAMX_MAXRSS + 1];
71 #endif /* __INITIAL_POINTER_SIZE == 64 */
74 flags |= LIB$M_FIL_LONG_NAMES;
77 if (ctx == NULL || directory == NULL) {
84 size_t filespeclen = strlen(directory);
85 char *filespec = NULL;
87 if (filespeclen == 0) {
92 /* MUST be a VMS directory specification! Let's estimate if it is. */
93 if (directory[filespeclen - 1] != ']'
94 && directory[filespeclen - 1] != '>'
95 && directory[filespeclen - 1] != ':') {
100 filespeclen += 4; /* "*.*;" */
102 if (filespeclen > NAMX_MAXRSS) {
103 errno = ENAMETOOLONG;
107 *ctx = malloc(sizeof(**ctx));
112 memset(*ctx, 0, sizeof(**ctx));
114 strcpy((*ctx)->filespec, directory);
115 strcat((*ctx)->filespec, "*.*;");
117 /* Arrange 32-bit pointer to (copied) string storage, if needed. */
118 #if __INITIAL_POINTER_SIZE == 64
119 # define CTX_FILESPEC ctx_filespec_32p
120 /* Copy the file name to storage with a 32-bit pointer. */
121 ctx_filespec_32p = ctx_filespec_32;
122 strcpy(ctx_filespec_32p, (*ctx)->filespec);
123 #else /* __INITIAL_POINTER_SIZE == 64 */
124 # define CTX_FILESPEC (*ctx)->filespec
125 #endif /* __INITIAL_POINTER_SIZE == 64 [else] */
127 (*ctx)->filespec_dsc.dsc$w_length = filespeclen;
128 (*ctx)->filespec_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
129 (*ctx)->filespec_dsc.dsc$b_class = DSC$K_CLASS_S;
130 (*ctx)->filespec_dsc.dsc$a_pointer = CTX_FILESPEC;
133 (*ctx)->result_dsc.dsc$w_length = 0;
134 (*ctx)->result_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
135 (*ctx)->result_dsc.dsc$b_class = DSC$K_CLASS_D;
136 (*ctx)->result_dsc.dsc$a_pointer = 0;
138 status = lib$find_file(&(*ctx)->filespec_dsc, &(*ctx)->result_dsc,
139 &(*ctx)->VMS_context, 0, 0, 0, &flags);
141 if (status == RMS$_NMF) {
147 if (!$VMS_STATUS_SUCCESS(status)) {
154 * Quick, cheap and dirty way to discard any device and directory, since
155 * we only want file names
157 l = (*ctx)->result_dsc.dsc$w_length;
158 p = (*ctx)->result_dsc.dsc$a_pointer;
161 if (*p == '^' && p[1] != '\0') { /* Take care of ODS-5 escapes */
163 } else if (*p == ':' || *p == '>' || *p == ']') {
166 } else if (*p == ';') {
172 strncpy((*ctx)->result, r, l);
173 (*ctx)->result[l] = '\0';
174 str$free1_dx(&(*ctx)->result_dsc);
176 return (*ctx)->result;
179 int LP_find_file_end(LP_DIR_CTX **ctx)
181 if (ctx != NULL && *ctx != NULL) {
182 int status = lib$find_file_end(&(*ctx)->VMS_context);
186 if (!$VMS_STATUS_SUCCESS(status)) {