From 418543ed8d974b06b71694da5c71059eb45897b5 Mon Sep 17 00:00:00 2001
From: c
Date: Sat, 25 Nov 2023 22:52:11 -0500
Subject: Initial commit.

---
 src/bf.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/bf.c

(limited to 'src/bf.c')

diff --git a/src/bf.c b/src/bf.c
new file mode 100644
index 0000000..dec7aa3
--- /dev/null
+++ b/src/bf.c
@@ -0,0 +1,38 @@
+#include "include/util.h"
+#include "include/bf.h"
+
+void bf_run(char* src, FILE* out) {
+   fprintf(out, "#include <stdio.h>\n");
+   fprintf(out, "#include <stdlib.h>\n");
+
+   fprintf(out, "int main(){\n");
+   fprintf(out, "char b[30000];\n");   // create memory buffer
+   fprintf(out, "char*p=b;\n");        // create pointer
+
+   while (*src != '\0') {
+      switch (*src) {
+         case '>': fprintf(out, "p++;\n");         break;   // move pointer right
+         case '<': fprintf(out, "p--;\n");         break;   // move pointer left
+         case '+': fprintf(out, "++*p;\n");        break;   // increment cell
+         case '-': fprintf(out, "--*p;\n");        break;   // decrement cell
+         case '[': fprintf(out, "while(*p){\n");   break;   // begin loop
+         case ']': fprintf(out, "}\n");            break;   // end loop
+         case '.': fprintf(out, "putchar(*p);\n"); break;   // print cell
+         case ',': fprintf(out, "*p=getchar();\n");break;   // set cell from stdin
+         // ignore all other chars
+      }
+      src++;
+   }
+
+   fprintf(out, "exit(0);\nreturn 0;\n}\n");
+}
+
+int main(int argc, char** argv) {
+   char* src = (argc - 1)?
+      util_src_from_fpath(fopen(argv[1], "rb")):
+      util_src_from_stdin();
+
+   bf_run(src, stdout);
+   free(src);
+   return 0;
+}
-- 
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