use autogen for command line options

libopts/boolean.c

@@ -0,0 +1,94 @@
+
+/**
+ * \file boolean.c
+ *
+ * Time-stamp:      "2012-03-31 13:46:19 bkorb"
+ *
+ *   Automated Options Paged Usage module.
+ *
+ *  This routine will run run-on options through a pager so the
+ *  user may examine, print or edit them at their leisure.
+ *
+ *  This file is part of AutoOpts, a companion to AutoGen.
+ *  AutoOpts is free software.
+ *  AutoOpts is Copyright (c) 1992-2012 by Bruce Korb - all rights reserved
+ *
+ *  AutoOpts is available under any one of two licenses.  The license
+ *  in use must be one of these two and the choice is under the control
+ *  of the user of the license.
+ *
+ *   The GNU Lesser General Public License, version 3 or later
+ *      See the files "COPYING.lgplv3" and "COPYING.gplv3"
+ *
+ *   The Modified Berkeley Software Distribution License
+ *      See the file "COPYING.mbsd"
+ *
+ *  These files have the following md5sums:
+ *
+ *  43b91e8ca915626ed3818ffb1b71248b pkg/libopts/COPYING.gplv3
+ *  06a1a2e4760c90ea5e1dad8dfaac4d39 pkg/libopts/COPYING.lgplv3
+ *  66a5cedaf62c4b2637025f049f9b826f pkg/libopts/COPYING.mbsd
+ */
+
+/*=export_func  optionBooleanVal
+ * private:
+ *
+ * what:  Decipher a boolean value
+ * arg:   + tOptions* + pOpts    + program options descriptor +
+ * arg:   + tOptDesc* + pOptDesc + the descriptor for this arg +
+ *
+ * doc:
+ *  Decipher a true or false value for a boolean valued option argument.
+ *  The value is true, unless it starts with 'n' or 'f' or "#f" or
+ *  it is an empty string or it is a number that evaluates to zero.
+=*/
+void
+optionBooleanVal(tOptions * pOpts, tOptDesc * pOD )
+{
+    char* pz;
+    bool  res = true;
+
+    (void)pOpts;
+
+    if ((pOD->fOptState & OPTST_RESET) != 0)
+        return;
+
+    if (pOD->optArg.argString == NULL) {
+        pOD->optArg.argBool = false;
+        return;
+    }
+
+    switch (*(pOD->optArg.argString)) {
+    case '0':
+    {
+        long  val = strtol( pOD->optArg.argString, &pz, 0 );
+        if ((val != 0) || (*pz != NUL))
+            break;
+        /* FALLTHROUGH */
+    }
+    case 'N':
+    case 'n':
+    case 'F':
+    case 'f':
+    case NUL:
+        res = false;
+        break;
+    case '#':
+        if (pOD->optArg.argString[1] != 'f')
+            break;
+        res = false;
+    }
+
+    if (pOD->fOptState & OPTST_ALLOC_ARG) {
+        AGFREE(pOD->optArg.argString);
+        pOD->fOptState &= ~OPTST_ALLOC_ARG;
+    }
+    pOD->optArg.argBool = res;
+}
+/*
+ * Local Variables:
+ * mode: C
+ * c-file-style: "stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * end of autoopts/boolean.c */