--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/share/delvs-master/delvs.h	Wed Sep 25 13:47:14 2013 +0000
@@ -0,0 +1,111 @@
+#include <stdio.h>
+#include <unistd.h>
+#define c g->code
+#define p g->pointer
+#define f g->file
+#define b g->bit
+
+struct Data {
+  const char *code;
+  char vars[30000];
+  char *pointer;
+  char bit;
+  FILE *file;
+};
+
+void lexer(struct Data *g) {
+  const char *cc = c;
+  while(*c)
+    switch (*c++) {
+      case '>':
+        ++p;
+        break;
+
+      case '<':
+        --p;
+        break;
+
+      case '+':
+        ++*p;
+        break;
+
+      case '-':
+        --*p;
+        break;
+
+      case '.':
+        putchar(*p);
+        break;
+
+      case ',':
+        *p = getchar();
+        break;
+
+      case '[':
+        cc = c;
+        if(!*p) while(*c++ != ']');
+        while(*p) {
+          c = cc; // restore char position to start of loop
+          lexer(g);
+        }
+        break;
+
+      case ']':
+        return;
+
+      case ':':
+        printf("%hhd", *p);
+        break;
+
+      case ';':
+        scanf("%hhd", p);
+        break;
+
+      case '#':
+        // open in read mode unless the cell is 1
+        if(f) fclose(f);
+        f = fopen(p + 1, *p == 1 ? "w" : "r");
+        break;
+
+      case '`':
+        *p = fgetc(f);
+        break;
+
+      case '!':
+        fputc(*p, f);
+        break;
+
+      case '\'':
+        *p ^= (1 << b);
+        b <= 0 ? b = 7 : b--;
+        break;
+
+      case '"':
+        b <= 0 ? b = 7 : b--;
+        break;
+
+      case '\\':
+        while(*c++ != '\n');
+        break;
+
+      case '@':
+        printf("%hhd : %hhd : %hhd : %hhd : %hhd", *(p - 2), *(p - 1), *p, *(p + 1), *(p + 2));
+        break;
+
+      case '$':
+        sleep(*p);
+        break;
+
+      default:
+        // everything else is comments
+        break;
+    }
+}
+/*
+ * Usage:
+ *  struct Data g;
+ *  g.code = "code here";
+ *  g.bit = 7;
+ *  g.pointer = &g.data[15000];
+ *  lexer(&g);
+ */