[lcd4linux @ 2000-03-10 11:40:47 by reinelt]

1 files changed, 172 insertions, 0 deletions

diff --git a/cfg.c b/cfg.c
new file mode 100644
index 0000000..c0245a7
--- /dev/null
+++ b/cfg.c
@@ -0,0 +1,172 @@
+/* $Id: cfg.c,v 1.1 2000/03/10 11:40:47 reinelt Exp $
+ *
+ * config file stuff
+ *
+ * Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at)
+ *
+ * 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, 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.
+ *
+ *
+ * $Log: cfg.c,v $
+ * Revision 1.1  2000/03/10 11:40:47  reinelt
+ * *** empty log message ***
+ *
+ * Revision 1.3  2000/03/07 11:01:34  reinelt
+ *
+ * system.c cleanup
+ *
+ * Revision 1.2  2000/03/06 06:04:06  reinelt
+ *
+ * minor cleanups
+ *
+ *
+ */
+
+/* 
+ * exported functions:
+ *
+ * cfg_set (key, value)
+ *   pre-set key's value
+ *   should be called before cfg_read()
+ *   so we can specify 'default values'
+ *
+ * cfg_get (key) 
+ *   return the a value for a given key 
+ *   or NULL if key does not exist
+ *
+ * cfg_read (file)
+ *   read configuration from file   
+ *   returns  0 if successful
+ *   returns -1 in case of an error
+ * 
+ * cfg_file (void)
+ *   returns the file the configuration was read from
+ * 
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "cfg.h"
+
+typedef struct {
+  char *key;
+  char *val;
+} ENTRY;
+
+static char  *Config_File=NULL;
+static ENTRY *Config=NULL;
+static int   nConfig=0;
+
+
+static char *strip (char *s)
+{
+  char *p;
+  
+  while (isblank(*s)) s++;
+  for (p=s; *p; p++) {
+    if (*p=='"') do p++; while (*p && *p!='\n' && *p!='"');
+    if (*p=='\'') do p++; while (*p && *p!='\n' && *p!='\'');
+    if (*p=='#' || *p=='\n') {
+      *p='\0';
+      break;
+    }
+  }
+  for (p--; p>s && isblank(*p); p--) *p='\0';
+  return s;
+}
+
+
+void cfg_set (char *key, char *val)
+{
+  int i;
+  
+  for (i=0; i<nConfig; i++) {
+    if (strcasecmp(Config[i].key, key)==0) {
+      if (Config[i].val) free (Config[i].val);
+      Config[i].val=strdup(val);
+      return;
+    }
+  }
+  nConfig++;
+  Config=realloc(Config, nConfig*sizeof(ENTRY));
+  Config[i].key=strdup(key);
+  Config[i].val=strdup(val);
+}
+
+
+char *cfg_get (char *key)
+{
+  int i;
+
+  for (i=0; i<nConfig; i++) {
+    if (strcasecmp(Config[i].key, key)==0) {
+      return Config[i].val;
+    }
+  }
+  return NULL;
+}
+
+
+int cfg_read (char *file)
+{
+  FILE *stream;
+  char buffer[256];
+  char *line, *p, *s;
+  
+  stream=fopen (file, "r");
+  if (stream==NULL) {
+    fprintf (stderr, "open(%s) failed: %s\n", file, strerror(errno));
+    return-1;
+  }
+
+  if (Config_File) free (Config_File);
+  Config_File=strdup(file);
+    
+  while ((line=fgets(buffer,256,stream))!=NULL) {
+    if (*(line=strip(line))=='\0') continue;
+    for (p=line; *p; p++) {
+      if (isblank(*p)) {
+	*p++='\0';
+	break;
+      }
+    }
+    p=strip(p);
+    if (*p) for (s=p; *(s+1); s++);
+    else s=p;
+    if (*p=='"' && *s=='"') {
+      *s='\0';
+      p++;
+    }
+    else if (*p=='\'' && *s=='\'') {
+      *s='\0';
+      p++;
+    }
+    cfg_set (line, p);
+  }
+  fclose (stream);
+  return 0;
+}
+
+
+char *cfg_file (void)
+{
+  if (Config_File)
+    return Config_File;
+  else
+    return "";
+}