Write bf2c and add a little optimisation

.gitignore

@@ -0,0 +1,2 @@
+dist/
+package/

Makefile

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+sourcefiles := $(shell find src/ -name *.c)
+
+
+all:
+	make build-main
+
+build-main:
+	mkdir -p dist/ && \
+	gcc -o dist/bf2c ${sourcefiles}
+
+package:
+	./scripts/package-bf2c.sh
+
+deb:
+	make clean && \
+	make all && \
+	make package
+
+clean:
+	rm -rf dist/ && \
+	rm -rf package/
+
+
+.PHONY: run
+run:
+	cd ./dist/ && \
+	./bf2c

project.json

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+{
+  "Package": "bf2c",
+  "Version": "1.0-1",
+  "Section": "base",
+  "Priority": "optional",
+  "Architecture": "amd64",
+  "Maintainer": "MrMelon54 <github@onpointcoding.net>",
+  "Description": "bf2c - convert brainfuck to c"
+}

scripts/package-bf2c.sh

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+#!/bin/bash
+SCRIPT=$(readlink -f $0)
+SCRIPTPATH=`dirname $SCRIPT`
+PROJECT_DIR=`dirname $SCRIPTPATH`
+PROJECT_DAT=`cat $PROJECT_DIR/project.json`
+PROJECT_NAM=`echo $PROJECT_DAT | jq .Package -r`
+PROJECT_VER=`echo $PROJECT_DAT | jq .Version -r`
+
+echo
+echo "Packaging $PROJECT_NAM v$PROJECT_VER"
+echo
+
+INSTALL_DIR="/usr/bin"
+INSTALL_DIR=$(realpath -sm "$INSTALL_DIR")
+
+echo "Using the following folders for install"
+echo "PROJECT_DIR: $PROJECT_DIR"
+echo "INSTALL_DIR: $INSTALL_DIR"
+
+PACK="${PROJECT_DIR}/package/${PROJECT_NAM}_${PROJECT_VER}"
+PACK_BIN=$(realpath -sm "$PACK/$INSTALL_DIR")
+PACK_DEB=$(realpath -sm "$PACK/DEBIAN")
+mkdir -p "$PACK"
+mkdir -p "$PACK_BIN"
+mkdir -p "$PACK_DEB"
+
+# Copying files
+echo "Copying binary files"
+cp dist/bf2c "$PACK_BIN"
+
+echo "Generating meta data"
+PACK_CON=$(realpath -sm "$PACK_DEB/control")
+echo "" > "$PACK_CON"
+for row in $(echo "$PROJECT_DAT" | jq -r 'keys[]'); do
+  value=`echo "$PROJECT_DAT" | jq -r ".[\"$row\"]"`
+  echo "$row: $value" >> "$PACK_CON"
+done
+
+echo "Building package"
+dpkg-deb --build "$PACK"
+echo "Signing package"
+dpkg-sig -k OnPointCoding --sign repo "$PACK.deb"
+echo "Package complete:"

src/main.c

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+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+
+int is_arg(int ac, char **argv, char *arg) {
+  if (ac < 2) {
+    return 0;
+  }
+  for(int x=1; x < ac; x++) {
+    if (0 == strcmp(argv[x], arg)) {
+      return x;  // return position of arg
+    }
+  }
+  return 0;  // arg not present
+}
+
+void addValueChange(FILE *out, char *variable, bool increment, int value) {
+  if(increment) {
+    if(value==1) fprintf(out, "++%s;", variable);
+    else fprintf(out, "%s+=%d;", variable, value);
+  } else {
+    if(value==1) fprintf(out, "--%s;", variable);
+    else fprintf(out, "%s-=%d;", variable);
+  }
+}
+
+int main(int argc, char **argv)
+{
+  FILE *in = stdin, *out = stdout;
+  int a;
+  int b;
+  int c;
+  int cellsize = 30000;
+  bool optimise = false;
+
+  if(is_arg(argc, argv, "-o")) optimise = true;
+
+  fprintf(out,
+    "#include <stdio.h>\n"
+    "#include <stdlib.h>\n\n"
+    "int main(int argc, char **argv) {\n"
+    "unsigned char *cell = calloc(%d, 1);\n"
+    "unsigned char *cells = cell;\n"
+    "if (!cell) {\n"
+    "fprintf(stderr, \"Error allocating memory.\\n\");\n"
+    "return 1;\n"
+    "}\n\n", cellsize
+  );
+
+  a=1;
+
+  while (b!=EOF) {
+    c = getc(in);
+    switch (c) {
+      case '>':
+      case '<':
+      case '+':
+      case '-':
+      case '.':
+      case ',':
+      case '[':
+      case ']':
+      case EOF:
+        if (c!=EOF && b==c && optimise) a++;
+        else {
+          switch (b) {
+            case '>': addValueChange(out, "cell", true, a); break;
+            case '<': addValueChange(out, "cell", false, a); break;
+            case '+': addValueChange(out, "*cell", true, a); break;
+            case '-': addValueChange(out, "*cell", false, a); break;
+            case '.':
+              for (int i = 0; i < a; i++) fprintf(out, "putchar(*cell);\n");
+              break;
+            case ',':
+              for (int i = 0; i < a; i++) fprintf(out, "*cell = getchar();\n");
+              break;
+            case '[':
+              for (int i = 0; i < a; i++) fprintf(out, "while (*cell) {\n");
+              break;
+            case ']':
+              for (int i = 0; i < a; i++) fprintf(out, "}\n");
+              break;
+            default: break;
+          }
+
+          // Reset for next loop
+          a=1;
+          b = c;
+        }
+        break;
+    }
+  }
+
+  fprintf(out, "\nfree(cells);\nreturn 0;\n}\n");
+}