20 files changed, 246 insertions, 0 deletions

diff --git a/entries/adirar111/c-filesystem/cache/0 b/entries/adirar111/c-filesystem/cache/0
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index 0000000..573541a
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+++ b/entries/adirar111/c-filesystem/cache/0
@@ -0,0 +1 @@
+0
diff --git a/entries/adirar111/c-filesystem/cache/1 b/entries/adirar111/c-filesystem/cache/1
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index 0000000..56a6051
--- /dev/null
+++ b/entries/adirar111/c-filesystem/cache/1
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/10 b/entries/adirar111/c-filesystem/cache/10
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index 0000000..7c6ba0f
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+++ b/entries/adirar111/c-filesystem/cache/10
@@ -0,0 +1 @@
+55
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/11 b/entries/adirar111/c-filesystem/cache/11
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index 0000000..8643cf6
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+++ b/entries/adirar111/c-filesystem/cache/11
@@ -0,0 +1 @@
+89
diff --git a/entries/adirar111/c-filesystem/cache/12 b/entries/adirar111/c-filesystem/cache/12
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index 0000000..70e1a64
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+144
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/13 b/entries/adirar111/c-filesystem/cache/13
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index 0000000..f937f7e
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+++ b/entries/adirar111/c-filesystem/cache/13
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+233
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diff --git a/entries/adirar111/c-filesystem/cache/2 b/entries/adirar111/c-filesystem/cache/2
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+++ b/entries/adirar111/c-filesystem/cache/2
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/3 b/entries/adirar111/c-filesystem/cache/3
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index 0000000..d8263ee
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+++ b/entries/adirar111/c-filesystem/cache/3
@@ -0,0 +1 @@
+2
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/4 b/entries/adirar111/c-filesystem/cache/4
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index 0000000..00750ed
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+++ b/entries/adirar111/c-filesystem/cache/4
@@ -0,0 +1 @@
+3
diff --git a/entries/adirar111/c-filesystem/cache/5 b/entries/adirar111/c-filesystem/cache/5
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index 0000000..7813681
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+5
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/6 b/entries/adirar111/c-filesystem/cache/6
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index 0000000..301160a
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+++ b/entries/adirar111/c-filesystem/cache/6
@@ -0,0 +1 @@
+8
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/7 b/entries/adirar111/c-filesystem/cache/7
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index 0000000..ca7bf83
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+++ b/entries/adirar111/c-filesystem/cache/7
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+13
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/8 b/entries/adirar111/c-filesystem/cache/8
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index 0000000..b5045cc
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+++ b/entries/adirar111/c-filesystem/cache/8
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+21
\ No newline at end of file
diff --git a/entries/adirar111/c-filesystem/cache/9 b/entries/adirar111/c-filesystem/cache/9
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index 0000000..3e932fe
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+++ b/entries/adirar111/c-filesystem/cache/9
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+34
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diff --git a/entries/adirar111/c-filesystem/fib-fs.c b/entries/adirar111/c-filesystem/fib-fs.c
new file mode 100644
index 0000000..73126b6
--- /dev/null
+++ b/entries/adirar111/c-filesystem/fib-fs.c
@@ -0,0 +1,134 @@
+/* fib, but the cache is a directory of files
+ *  cache/
+ *    0 -> 0
+ *    1 -> 1
+ *    2 -> 1
+ *    3 -> 2
+ *    ...
+ * unix filesystem required
+*/
+#include <dirent.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+static const char CACHE_DIR[] = "cache";
+static const int BUF_SIZE = 30;
+static const int PATH_SIZE = 30;
+static const int N_STR_SIZE = 30;
+static const int LOF_INITIAL_SIZE = 1;
+
+long read_from_cache(char* path) {
+	char buf[BUF_SIZE];
+	int fd = open(path, O_RDONLY);
+
+	if (fd == -1) {
+		close(fd);
+		return 0;
+	}
+
+	if (!read(fd, buf, BUF_SIZE)) {
+		close(fd);
+		return 0;
+	}
+
+	close(fd);
+	return strtol(buf, NULL, 10);
+}
+
+long write_to_cache(char* path, long result) {
+	char buf[BUF_SIZE];
+	int fd = open(path, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
+	sprintf(buf, "%ld", result);
+
+	if (fd == -1) {
+		close(fd);
+		return 0;
+	}
+
+	if (!write(fd, buf, strlen(buf))) {
+		close(fd);
+		return 0;
+	}
+
+	close(fd);
+	return 1;
+}
+
+long init_cache() {
+	char path_to_0[PATH_SIZE];
+	char path_to_1[PATH_SIZE];
+	sprintf(path_to_0, "%s/%s", CACHE_DIR, "0");
+	sprintf(path_to_1, "%s/%s", CACHE_DIR, "1");
+
+	if (!write_to_cache(path_to_0, 0)) {
+		return 0;
+	}
+
+	if (!write_to_cache(path_to_1, 1)) {
+		return 0;
+	}
+
+	return 1;
+}
+
+long get_list_of_files(long** list_of_files, long curr_size) {
+	mkdir("cache", 0777);
+	struct dirent *d;
+	DIR* cache_dir = opendir(CACHE_DIR);
+
+	if (!cache_dir) {
+		closedir(cache_dir);
+		return 0;
+	}
+
+	init_cache();
+
+	while ((d = readdir(cache_dir)) != NULL) {
+		if (d->d_type == DT_REG) {
+			*((*list_of_files) + curr_size - 1) = strtol(d->d_name, NULL, 10);
+			curr_size++;
+			*list_of_files = realloc(*list_of_files, curr_size * sizeof(long));
+		}
+	}
+
+	closedir(cache_dir);
+	return curr_size - 1;
+}
+
+
+int is_in_cache(long* list_of_files, long size_of_lof, long n) {
+	for (int i = 0; i < size_of_lof; i++) {
+		if (list_of_files[i] == n) return 1;
+	}
+	return 0;
+}
+
+long fib(long n) {
+	char n_str[N_STR_SIZE];
+	char path[PATH_SIZE];
+	long* list_of_files = malloc(sizeof(long));
+	long size_of_lof = get_list_of_files(&list_of_files, LOF_INITIAL_SIZE);
+
+	sprintf(n_str, "%ld", n);
+	sprintf(path, "%s/%s", CACHE_DIR, n_str);
+
+	if (is_in_cache(list_of_files, size_of_lof, n)) {
+		free(list_of_files);
+		return read_from_cache(path);
+	}
+
+	free(list_of_files);
+	long to_cache = fib(n-1) + fib(n-2);
+	write_to_cache(path,  to_cache);
+	return to_cache;
+}
+
+
+int main() {
+	printf("FIB RESULT: %ld\n", fib(13));
+}
diff --git a/entries/adirar111/wasm/fib.wasm b/entries/adirar111/wasm/fib.wasm
new file mode 100644
index 0000000..6a93250
--- /dev/null
+++ b/entries/adirar111/wasm/fib.wasm
diff --git a/entries/adirar111/wasm/fib.wat b/entries/adirar111/wasm/fib.wat
new file mode 100644
index 0000000..6ec9b69
--- /dev/null
+++ b/entries/adirar111/wasm/fib.wat
@@ -0,0 +1,27 @@
+;; iterative fib(n) in web assembly text format (wat)
+;; this gets compiled to the fib.wasm binary
+;; and gets fetched via a data URL in index.js
+(module
+	(export "fib" (func $fib))
+	(func $fib (param $n i32) (result i32)
+		(local $last i32)
+		(local $sum i32)
+		(local $i i32)
+		(local $tmp i32)
+		(if (i32.lt_s (local.get $n) (i32.const 2))
+			(return (local.get $n))
+		)
+		(local.set $last (i32.const 0))
+		(local.set $sum (i32.const 1))
+		(local.set $i (i32.const 2))
+		(local.set $n (i32.add (local.get $n) (i32.const 1)))
+		(loop $loop
+			(local.set $tmp (local.get $sum))
+			(local.set $sum (i32.add (local.get $sum) (local.get $last)))
+			(local.set $last (local.get $tmp))
+			(local.set $i (i32.add (local.get $i) (i32.const 1)))
+			(br_if $loop (i32.lt_s (local.get $i) (local.get $n)))
+		)
+		(return (local.get $sum))
+	)
+)
diff --git a/entries/adirar111/wasm/index.html b/entries/adirar111/wasm/index.html
new file mode 100644
index 0000000..8357a55
--- /dev/null
+++ b/entries/adirar111/wasm/index.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<title>wasm fib</title>
+		<link
+			href="https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@600;700&display=swap"
+			rel="stylesheet"
+		/>
+		<link rel="stylesheet" href="style.css" />
+	</head>
+	<body>
+		<p>go ahead, type a number</p>
+		<div id="input-area">
+			<input id="input" type="text" autocomplete="off" />
+			<button id="compute">compute!</button>
+		</div>
+		<p>fib.wasm says:</p>
+		<span id="result"></span>
+		<script src="index.js"></script>
+	</body>
+</html>
diff --git a/entries/adirar111/wasm/index.js b/entries/adirar111/wasm/index.js
new file mode 100644
index 0000000..667ff82
--- /dev/null
+++ b/entries/adirar111/wasm/index.js
@@ -0,0 +1,23 @@
+const wasmBinaryBase64 = "AGFzbQEAAAABBgFgAX8BfwMCAQAHBwEDZmliAAAKRwFFAQR/IABBAkgEQCAADwtBACEBQQEhAkECIQMgAEEBaiEAA0AgAiEEIAIgAWohAiAEIQEgA0EBaiEDIAMgAEgNAAsgAg8LACgEbmFtZQEGAQADZmliAhkBAAUAAW4BBGxhc3QCA3N1bQMBaQQDdG1w"
+const wasmBinaryDataURL = `data:application/wasm;base64,${wasmBinaryBase64}`;
+
+WebAssembly.instantiateStreaming(fetch(wasmBinaryDataURL)).then(
+	(wasmObj) => {
+		const {fib: fibWasm} = wasmObj.instance.exports
+		const fib = (event) => {
+			event.preventDefault()
+			const input = document.getElementById("input")
+			const result = document.getElementById("result")
+			const n = parseInt(input.value)
+			if (isNaN(n)) {
+				return result.textContent = "that wasn't very wasm of you"
+			}
+			if (n < 0) {
+				return result.textContent = "why are you being so negative"
+			}
+			result.textContent = fibWasm(n)
+		}
+		const button = document.getElementById("compute")
+		button.onclick = fib
+	}
+);
diff --git a/entries/adirar111/wasm/style.css b/entries/adirar111/wasm/style.css
new file mode 100644
index 0000000..8ab403f
--- /dev/null
+++ b/entries/adirar111/wasm/style.css
@@ -0,0 +1,27 @@
+html {
+	background: #5a46ee;
+	color: #fff;
+	font-family: "Source Code Pro"
+}
+
+body {
+	display: flex;
+	flex-direction: column;
+	justify-content: center;
+	align-items: center;
+}
+
+#input-area {
+	display: flex;
+	flex-direction: row;
+	justify-content: space-between;
+}
+
+#input {
+	height: 40px;
+	font-size: 30px
+}
+
+#result {
+	font-size: 50px
+}