From b5783dacf216af9bb70ad2eab95d555277e204a1 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Mon, 21 Nov 2022 14:46:24 +0200
Subject: Reformat

---
 README      |  8 +++-----
 brainfuck.c | 59 ++++++++++++++---------------------------------------------
 2 files changed, 17 insertions(+), 50 deletions(-)

diff --git a/README b/README
index 98c184a..4022180 100644
--- a/README
+++ b/README
@@ -1,14 +1,12 @@
 ./brainfuck: Brainfuck programming language interpreter
-See <http://en.wikipedia.org/wiki/Brainfuck> for more details
-
 Usage: ./brainfuck [options] [file]
 
 Size of each data cell is 4 byte(s)
 All data cells are zeros initially
 
-Options (defaults are in brackets):
-   -s num         stack size (128)
-   -d num         data size (1024)
+Options:
+   -s num         stack size (default 128)
+   -d num         data size (default 1024)
    -t             trace execution for debugging
    -O             optimize code
    -C             translate into C (to stdout)
diff --git a/brainfuck.c b/brainfuck.c
index fb15282..6279668 100644
--- a/brainfuck.c
+++ b/brainfuck.c
@@ -1,4 +1,3 @@
-
 /*
  * gcc -ansi -pedantic -Wall -Wextra -Werror -o brainfuck brainfuck.c
  */
@@ -9,41 +8,27 @@
 #include <string.h>
 #include <getopt.h>
 
+#define xstr(a) str(a)
+#define str(a) #a
 #define DATATYPE int
-#define DATATYPE_STR "int"
+#define DATATYPE_STR xstr(DATATYPE)
 
 FILE *prog;
-
 char *print_as = NULL;
-
 char *code = NULL;
-
 DATATYPE *data = NULL;
-
 unsigned int *stack = NULL;
-
 unsigned int data_size = 1024;
-
 unsigned int stack_size = 128;
-
 char fmt = 'u';
-
 char format[9] = "%u";
-
 int trace = 0;
-
 int compile = 0;
-
 int optimize = 0;
-
 unsigned int cp = 0;
-
 unsigned int dp = 0;
-
 unsigned int max_dp = 0;
-
 unsigned int sp = 0;
-
 char commands[] = "+-<>,.[]cioux";
 
 void
@@ -404,9 +389,9 @@ optimize_code ()
           else if (d != 0)
             {
               if (d < 0)
-                sprintf (tmp, "L%u", -d); /* move left by d */
+                sprintf (tmp, "L%u", -d);       /* move left by d */
               else
-                sprintf (tmp, "R%u", d);  /* move right by d */
+                sprintf (tmp, "R%u", d);        /* move right by d */
               k = 0;
               while (tmp[k])
                 new_code[j++] = tmp[k++];
@@ -422,14 +407,10 @@ optimize_code ()
    */
   substr = new_code;
   while (NULL != (substr = strstr (substr, "[-]")))
-    {
-      memcpy (substr, "Z  ", 3); /* [-] set current cell to 0 */
-    }
+    memcpy (substr, "Z  ", 3);  /* [-] set current cell to 0 */
   substr = new_code;
   while (NULL != (substr = strstr (substr, "[+]")))
-    {
-      memcpy (substr, "Z  ", 3); /* [-] set current cell to 0 */
-    }
+    memcpy (substr, "Z  ", 3);  /* [-] set current cell to 0 */
 
   free (code);
   code = new_code;
@@ -619,17 +600,15 @@ void
 usage (char *self)
 {
   printf ("%s: Brainfuck programming language interpreter\n", self);
-  printf
-    ("See <http://en.wikipedia.org/wiki/Brainfuck> for more details\n\n");
 
   printf ("Usage: %s [options] [file]\n\n", self);
 
   printf ("Size of each data cell is %lu byte(s)\n",
           (long unsigned int) sizeof (DATATYPE));
   printf ("All data cells are zeros initially\n\n");
-  printf ("Options (defaults are in brackets):\n");
-  printf ("   -s num         stack size (%u)\n", stack_size);
-  printf ("   -d num         data size (%u)\n", data_size);
+  printf ("Options:\n");
+  printf ("   -s num         stack size (default %u)\n", stack_size);
+  printf ("   -d num         data size (default %u)\n", data_size);
   printf ("   -t             trace execution for debugging\n");
   printf ("   -O             optimize code\n");
   printf ("   -C             translate into C (to stdout)\n");
@@ -673,9 +652,7 @@ int
 main (int argc, char **argv)
 {
   char *filename;
-
   char *self = argv[0];
-
   int opt;
 
   while (-1 != (opt = getopt (argc, argv, "p:OCts:d:h?iucox")))
@@ -724,9 +701,7 @@ main (int argc, char **argv)
         }
     }
   else
-    {
-      prog = stdin;
-    }
+    prog = stdin;
 
   read_code ();
 
@@ -737,19 +712,13 @@ main (int argc, char **argv)
     optimize_code ();
 
   if (compile)
-    {
-      bf2c ();
-    }
+    bf2c ();
   else if (print_as != NULL)
     {
       if (strcmp (print_as, "cow") == 0)
-        {
-          bf2moo ();
-        }
+        bf2moo ();
       else
-        {
-          fprintf (stderr, "Unknown argument to -p: %s\n", print_as);
-        }
+        fprintf (stderr, "Unknown argument to -p: %s\n", print_as);
     }
   else
     {
-- 
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