+
+/*
+ * Return the present working directory, if the current directory does not
+ * exist, or is too long, make / the pwd.
+ */
+char *
+pwd(void)
+{
+ register char *cp;
+ static char curwd[PATH_MAX];
+
+ if (!getcwd (curwd, PATH_MAX)) {
+ admonish (NULL, "unable to determine working directory");
+ if (!mypath || !*mypath
+ || (strcpy (curwd, mypath), chdir (curwd)) == -1) {
+ strcpy (curwd, "/");
+ chdir (curwd);
+ }
+ return curwd;
+ }
+
+ if ((cp = curwd + strlen (curwd) - 1) > curwd && *cp == '/')
+ *cp = '\0';
+
+ return curwd;
+}
+
+/*
+ * add -- If "s1" is NULL, this routine just creates a
+ * -- copy of "s2" into newly malloc'ed memory.
+ * --
+ * -- If "s1" is not NULL, then copy the concatenation
+ * -- of "s1" and "s2" (note the order) into newly
+ * -- malloc'ed memory. Then free "s1".
+ */
+char *
+add (char *s2, char *s1)
+{
+ char *cp;
+ size_t len1 = 0, len2 = 0;
+
+ if (s1)
+ len1 = strlen (s1);
+ if (s2)
+ len2 = strlen (s2);
+
+ cp = mh_xmalloc (len1 + len2 + 1);
+
+ /* Copy s1 and free it */
+ if (s1) {
+ memcpy (cp, s1, len1);
+ free (s1);
+ }
+
+ /* Copy s2 */
+ if (s2)
+ memcpy (cp + len1, s2, len2);
+
+ /* Now NULL terminate the string */
+ cp[len1 + len2] = '\0';
+
+ return cp;
+}
+
+/*
+ * folder_exists
+ * Check to see if a folder exists.
+ */
+int folder_exists(char *folder)
+{
+ struct stat st;
+ int exists = 0;
+
+ if (stat (folder, &st) == -1) {
+ /* The folder either doesn't exist, or we hit an error. Either way
+ * return a failure.
+ */
+ exists = 0;
+ } else {
+ /* We can see a folder with the right name */
+ exists = 1;
+ }
+
+ return exists;
+}
+
+
+/*
+ * create_folder
+ * Check to see if a folder exists, if not, prompt the user to create
+ * it.
+ */
+void create_folder(char *folder, int autocreate, void (*done_callback)(int))
+{
+ struct stat st;
+ extern int errno;
+ char *cp;
+
+ if (stat (folder, &st) == -1) {
+ if (errno != ENOENT)
+ adios (folder, "error on folder");
+ if (autocreate == 0) {
+ /* ask before creating folder */
+ cp = concat ("Create folder \"", folder, "\"? ", NULL);
+ if (!getanswer (cp))
+ done_callback (1);
+ free (cp);
+ } else if (autocreate == -1) {
+ /* do not create, so exit */
+ done_callback (1);
+ }
+ if (!makedir (folder))
+ adios (NULL, "unable to create folder %s", folder);
+ }
+}
+
+/*
+ * num_digits
+ * Return the number of digits in a nonnegative integer.
+ */
+int
+num_digits (int n)
+{
+ int ndigits = 0;
+
+ /* Sanity check */
+ if (n < 0)
+ adios (NULL, "oops, num_digits called with negative value");
+
+ if (n == 0)
+ return 1;
+
+ while (n) {
+ n /= 10;
+ ndigits++;
+ }
+
+ return ndigits;
+}
+
+/*
+ * Append a message arg to an array of them, resizing it if necessary.
+ * The function is written to suit the arg parsing code it was extracted
+ * from, and will probably be changed when the other code is cleaned up.
+ */
+void
+app_msgarg(struct msgs_array *msgs, char *cp)
+{
+ if(msgs->size >= msgs->max)
+ msgs->msgs = mh_xrealloc(msgs->msgs, (msgs->max+=MAXMSGS)*sizeof(*msgs->msgs));
+ msgs->msgs[msgs->size++] = cp;
+}
+
+/* Open a form or components file */
+int
+open_form(char **form, char *def)
+{
+ int in;
+ if (*form) {
+ if ((in = open (etcpath (*form), O_RDONLY)) == NOTOK)
+ adios (*form, "unable to open form file");
+ } else {
+ if ((in = open (etcpath (def), O_RDONLY)) == NOTOK)
+ adios (def, "unable to open default components file");
+ *form = def;
+ }
+ return in;
+}