[lcd4linux @ 2004-01-13 10:03:01 by reinelt]

new util 'hash' for associative arrays
new plugin 'cpuinfo'

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@309 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

plugin_cpuinfo.c

@@ -0,0 +1,115 @@
+/* $Id: plugin_cpuinfo.c,v 1.1 2004/01/13 10:03:01 reinelt Exp $
+ *
+ * plugin for /proc/cpuinfo parsing
+ *
+ * Copyright 2003 Michael Reinelt <reinelt@eunet.at>
+ * Copyright 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.
+ *
+ *
+ * $Log: plugin_cpuinfo.c,v $
+ * Revision 1.1  2004/01/13 10:03:01  reinelt
+ * new util 'hash' for associative arrays
+ * new plugin 'cpuinfo'
+ *
+ */
+
+/* 
+ * exported functions:
+ *
+ * int plugin_init_cpuinfo (void)
+ *  adds functions to access /proc/cpuinfo
+ *
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <time.h>
+
+#include "debug.h"
+#include "plugin.h"
+#include "hash.h"
+
+
+static void my_cpuinfo (RESULT *result, RESULT *arg1)
+{
+  static HASH CPUinfo = { 0, 0, NULL };
+  
+  static time_t now=0;
+  char *key, *val;
+  
+  // reread every second only
+  if (time(NULL)!=now) {
+    FILE *stream;
+    
+    // destroy previous hash table
+    hash_destroy (&CPUinfo);
+
+    stream=fopen("/proc/cpuinfo", "r");
+    if (stream==NULL) {
+      error ("fopen(/proc/cpuinfo) failed: %s", strerror(errno));
+      goto error;
+    }
+    
+    while (!feof(stream)) {
+      char buffer[256];
+      char *c;
+      fgets (buffer, sizeof(buffer), stream);
+      c=strchr(buffer, ':');
+      if (c==NULL) continue;
+      key=buffer; val=c+1;
+      // strip leading blanks from key
+      while (isspace(*key)) *key++='\0';
+      // strip trailing blanks from key
+      while (isspace(*--c)) *c='\0';
+      // strip leading blanks from value
+      while (isspace(*val)) *val++='\0';
+      // strip trailing blanks from value
+      for (c=val; *c!='\0';c++);
+      while (isspace(*--c)) *c='\0';
+      
+      // add entry to hash table
+      hash_set (&CPUinfo, key, val);
+      
+    }
+    
+    fclose (stream);
+	   
+    time(&now);
+  }
+  
+  key=R2S(arg1);
+  val=hash_get(&CPUinfo, key);
+  if (val==NULL) val="";
+
+ error:
+  // val="";
+  SetResult(&result, R_STRING, val); 
+}
+
+
+int plugin_init_cpuinfo (void)
+{
+  AddFunction ("cpuinfo", 1, my_cpuinfo);
+  return 0;
+}
+