1 files changed, 145 insertions, 0 deletions
diff --git a/plugin_string.c b/plugin_string.c
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+++ b/plugin_string.c
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+/* $Id: plugin_string.c 840 2007-09-09 12:17:42Z michael $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/plugin_string.c $
+ *
+ * string plugin
+ *
+ * Copyright (C) 2003, 2004 Michael Reinelt <michael@reinelt.co.at>
+ * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux 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, or (at your option)
+ * any later version.
+ *
+ * LCD4Linux 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.
+ *
+ */
+
+/* 
+ * exported functions:
+ *
+ * int plugin_init_string (void)
+ *  adds some handy string functions
+ *
+ */
+
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "debug.h"
+#include "plugin.h"
+
+
+static void my_strlen(RESULT * result, RESULT * arg1)
+{
+    double value = strlen(R2S(arg1));
+    SetResult(&result, R_NUMBER, &value);
+}
+
+/* 'upcase' function (shamelessly stolen from plugin_sample.c)*/
+/* returns the string in upper case letters */
+static void my_strupper(RESULT * result, RESULT * arg1)
+{
+    char *value, *p;
+
+    value = strdup(R2S(arg1));
+
+    for (p = value; *p != '\0'; p++)
+	*p = toupper(*p);
+
+    SetResult(&result, R_STRING, value);
+    free(value);
+}
+
+static void my_strstr(RESULT * result, RESULT * arg1, RESULT * arg2)
+{
+    char *p;
+    double value;
+
+    char *haystack = R2S(arg1);
+    char *needle = R2S(arg2);
+
+    p = strstr(haystack, needle);
+
+    if (p == NULL) {
+	value = -1;
+    } else {
+	value = p - haystack;
+    }
+
+    SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_substr(RESULT * result, int argc, RESULT * argv[])
+{
+    char *str, *p1, *p2;
+    int pos, len;
+
+    if (argc < 2 || argc > 3) {
+	error("substr(): wrong number of parameters");
+	SetResult(&result, R_STRING, "");
+	return;
+    }
+
+    str = strdup(R2S(argv[0]));
+
+    pos = R2N(argv[1]);
+    if (pos < 0)
+	pos = 0;
+
+    if (argc == 3) {
+	len = R2N(argv[2]);
+	if (len < 0)
+	    len = 0;
+    } else {
+	len = -1;
+    }
+
+    p1 = str;
+    while (pos > 0 && *p1 != '\0') {
+	p1++;
+	pos--;
+    }
+
+    if (len >= 0) {
+	p2 = p1;
+	while (len > 0 && *p2 != '\0') {
+	    p2++;
+	    len--;
+	}
+	*p2 = '\0';
+    }
+
+    SetResult(&result, R_STRING, p1);
+    free(str);
+}
+
+int plugin_init_string(void)
+{
+
+    /* register some basic string functions */
+    AddFunction("strlen", 1, my_strlen);
+    AddFunction("strupper", 1, my_strupper);
+    AddFunction("strstr", 2, my_strstr);
+    AddFunction("substr", -1, my_substr);
+    return 0;
+}
+
+void plugin_exit_string(void)
+{
+    /* empty */
+}