From e55b10a8352256aa5c1e5b83b83f9f5887f00424 Mon Sep 17 00:00:00 2001
From: Ben Harris <ben@tilde.team>
Date: Fri, 14 May 2021 16:17:51 -0400
Subject: [PATCH] add c

---
 bin/bin/c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100755 bin/bin/c

diff --git a/bin/bin/c b/bin/bin/c
new file mode 100755
index 0000000..153a2f9
--- /dev/null
+++ b/bin/bin/c
@@ -0,0 +1,84 @@
+#!/bin/sh
+set -eu
+
+temp=$(mktemp -d)
+trap 'rm -r "$temp"' EXIT
+
+exec 3>>"${temp}/run.c"
+
+cat >&3 <<EOF
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include <fcntl.h>
+#include <strings.h>
+#include <unistd.h>
+EOF
+
+while getopts 'e:i:' opt; do
+	case "$opt" in
+		(e) expr=$OPTARG;;
+		(i) echo "#include <${OPTARG}>" >&3;;
+		(?) exit 1;;
+	esac
+done
+shift $((OPTIND - 1))
+
+cat >&3 <<EOF
+int main(int argc, char *argv[]) {
+	(void)argc;
+	(void)argv;
+	$*;
+EOF
+
+if [ -n "${expr:-}" ]; then
+	cat >&3 <<EOF
+	printf(
+		_Generic(
+			${expr},
+			char: "%c\n",
+			char *: "%s\n",
+			wchar_t *: "%ls\n",
+			signed char: "%hhd\n",
+			short: "%hd\n",
+			int: "%d\n",
+			long: "%ld\n",
+			long long: "%lld\n",
+			unsigned char: "%hhu\n",
+			unsigned short: "%hu\n",
+			unsigned int: "%u\n",
+			unsigned long: "%lu\n",
+			unsigned long long: "%llu\n",
+			double: "%g\n",
+			default: "%p\n"
+		),
+		${expr}
+	);
+EOF
+fi
+
+if [ $# -eq 0 -a -z "${expr:-}" ]; then
+	cat >&3
+fi
+
+echo '}' >&3
+
+cat >"${temp}/Makefile" <<EOF
+CFLAGS += -Wall -Wextra -Wpedantic
+EOF
+
+make -s -C "${temp}" run
+"${temp}/run"