X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/08aa8c17c3241bb5c6a997ed2e01e25a4d0089ce..1524cb8c0b86a854149d7859d6a2503d61dbaa36:/sbr/utils.c

diff --git a/sbr/utils.c b/sbr/utils.c
index 2a7a1ccf..64df443b 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -12,8 +12,15 @@
 #include <h/mh.h>
 #include <h/utils.h>
 #include <stdlib.h>
+#include <fcntl.h>
 #include <errno.h>
 
+/*
+ * We allocate space for messages (msgs array)
+ * this number of elements at a time.
+ */
+#define MAXMSGS 256
+
 /*
  * Safely call malloc
  */
@@ -141,3 +148,56 @@ void create_folder(char *folder, int autocreate, void (*done_callback)())
             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;
+}