From 1030dc837b10a03a02a85d5504cbeec168ce49e2 Mon Sep 17 00:00:00 2001
From: Bernie Innocenti <bernie@codewiz.org>
Date: Mon, 03 May 2010 21:53:47 +0000
Subject: Import XaoS r489 (trunk after version 3.5)

---
(limited to 'src/ui/param.c')

diff --git a/src/ui/param.c b/src/ui/param.c
new file mode 100644
index 0000000..eb10a9d
--- /dev/null
+++ b/src/ui/param.c
@@ -0,0 +1,172 @@
+/* 
+ *     XaoS, a fast portable realtime fractal zoomer 
+ *                  Copyright (C) 1996,1997 by
+ *
+ *      Jan Hubicka          (hubicka@paru.cas.cz)
+ *      Thomas Marsh         (tmarsh@austin.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#ifdef _plan9_
+#include <u.h>
+#include <libc.h>
+#else
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#endif
+#include <config.h>
+#include <param.h>
+#include <xmenu.h>
+#include <version.h>
+#include <xerror.h>
+#define MAXPARAMS 40
+static CONST struct params *params[40];
+int nparams;
+
+int params_parser(int argc, char **argv)
+{
+    int i, p = 0, d;
+    int ie = 0;
+    int is;
+    CONST struct params *par = NULL;
+    int error = 0;
+    int found;
+    for (i = 1; i < argc && !error; i++) {
+	found = 0;
+#ifdef MACOSX
+	if (strncmp("-psn", argv[i], 4) == 0)
+	    continue;
+#endif
+	if (!strcmp("-help", argv[i])) {
+	    error = 1;
+	    break;
+	}
+	for (d = 0; d < nparams; d++) {
+	    par = params[d];
+	    for (p = 0; par[p].name != NULL && !error; p++) {
+		if (!strcmp(par[p].name, argv[i])) {
+		    found = 1;
+		    is = i;
+		    switch (par[p].type) {
+		    case P_SWITCH:
+			*((int *) par[p].value) = 1;
+			break;
+		    case P_NUMBER:
+			{
+			    int n;
+			    if (i == argc - 1) {
+				x_error
+				    ("parameter %s requires numeric value.",
+				     argv[i]);
+				error = 1;
+				break;
+			    }
+			    if (sscanf(argv[i + 1], "%i", &n) != 1) {
+				x_error("parameter for %s is not number.",
+					argv[i]);
+				error = 1;
+				break;
+			    }
+			    *((int *) par[p].value) = n;
+			    i++;
+			}
+			break;
+		    case P_FLOAT:
+			{
+			    float n;
+			    if (i == argc - 1) {
+				x_error
+				    ("parameter %s requires floating point numeric value.",
+				     argv[i]);
+				error = 1;
+				break;
+			    }
+			    if (sscanf(argv[i + 1], "%f", &n) != 1) {
+				x_error
+				    ("parameter for %s is not floating point number.",
+				     argv[i]);
+				error = 1;
+				break;
+			    }
+			    *((float *) par[p].value) = n;
+			    i++;
+			}
+			break;
+		    case P_STRING:
+			{
+			    if (i == argc - 1) {
+				x_error
+				    ("parameter %s requires string value.",
+				     argv[i]);
+				error = 1;
+				break;
+			    }
+			    i++;
+			    *((char **) par[p].value) = *(argv + i);
+			}
+		    }
+		    ie = i;
+		    i = is;
+		}
+	    }
+	}
+	if (d == nparams && !found) {
+	    i = menu_processargs(i, argc, argv);
+	    if (i < 0) {
+		error = 1;
+		break;
+	    } else
+		i++;
+	} else
+	    i = ie;
+    }
+    if (error) {
+	const char *name[] = {
+	    "",
+	    "number",
+	    "string",
+	    "f.point"
+	};
+#ifndef _plan9_
+	printf("                 XaoS" XaoS_VERSION " help text\n");
+	printf
+	    (" (This help is genereated automagically. I am sorry for all inconvencies)\n\n");
+#endif
+	printf("option string   param   description\n\n");
+	for (d = 0; d < nparams; d++) {
+	    par = params[d];
+	    for (p = 0; par[p].name != NULL; p++) {
+		if (par[p].type == P_HELP)
+		    printf("\n%s\n\n", par[p].help);
+		else if (!par[p].type)
+		    printf(" %-14s   %s\n", par[p].name, par[p].help);
+		else
+		    printf(" %-14s  %s\n%14s    %s\n", par[p].name,
+			   name[par[p].type], "", par[p].help);
+	    }
+	    if (p == 0)
+		printf(" No options avaiable for now\n");
+	}
+	menu_printhelp();
+	return 0;
+    }
+    return (1);
+}
+
+void params_register(CONST struct params *par)
+{
+    params[nparams++] = par;
+}
--
cgit v0.9.1