init

index.php

@@ -0,0 +1,111 @@
+<?php
+
+require("./lib//config.php");
+require("./lib//helpers.php");
+require("./lib//validation.php");
+
+session_start();
+
+setup_locale();
+
+validate_get_parameter();
+
+$id = $_GET["id"];
+$tempo = $_GET["tempo"];
+$time = $_GET["time"];
+$bars = intval($_GET["bars"]);
+
+$dynamic_beat = $_GET["dynamic_beat"];
+$dynamic_rhythm = $_GET["dynamic_rhythm"];
+
+$notes_final = [];
+$notes_modifiers = [];
+$bars_count = 0;
+$rhythm_length = 0;
+
+$time_explode = explode("/", $time, 2);
+$rhythm_length_max = MAX_FRACTION * (intval($time_explode[0]) / intval($time_explode[1]));
+
+$id_hashed = md5($id);
+do {
+    $notes_input = [];
+    for($i = 0; $i < strlen($id_hashed); $i+=2)
+    {
+        $notes_input[] = strval(pow(2, (ord(substr($id_hashed, $i)) % intval(log(MAX_FRACTION, 2))) + 1));
+        $notes_modifiers[] = ord(substr($id_hashed, $i + 1));
+    }
+    for($i = 0; $i < count($notes_input); $i++)
+    {
+        if($bars_count == $bars)
+        {
+            continue;
+        }
+        $note_val = intval($notes_input[$i]);
+        if(($note_val == 0) || ($note_val > MAX_FRACTION) || (!is_valid_note($note_val)))
+        {
+            continue;
+        }
+        if($rhythm_length + (MAX_FRACTION / $note_val) > $rhythm_length_max)
+        {
+            continue;
+        }
+        $rhythm_length += MAX_FRACTION / $note_val;
+
+        if($notes_modifiers[$i] & 0b0111)
+        {
+            $notes_final[] = PERCUSSION_CLAP . $note_val;
+        }
+        else
+        {
+            $notes_final[] = PERCUSSION_REST . $note_val;
+        }
+
+        if($rhythm_length == $rhythm_length_max)
+        {
+            $notes_final[] = "|";
+            $rhythm_length = 0;
+            $bars_count++;
+        }
+    }
+    $id_hashed = md5($id_hashed);
+} while($bars_count < $bars);
+
+$notes_final = implode(" ", $notes_final);
+
+$rest_padding = array_fill(0, $time_explode[0], PERCUSSION_REST . $time_explode[1]);
+$rest_padding[0] = $rest_padding[0] . "\\$dynamic_rhythm";
+$rest_padding = implode(" ", $rest_padding);
+
+$beats_one_bar = array_fill(1, $time_explode[0] - 1, PERCUSSION_BEAT . $time_explode[1]);
+array_unshift($beats_one_bar, PERCUSSION_BEAT_ACCENT . $time_explode[1] . "\\$dynamic_beat");
+array_push($beats_one_bar, "|");
+$beats = implode(" ", array_fill(0, $bars_count + 2, implode(" ", $beats_one_bar)));
+
+$file_content = sprintf(
+    LILYPOND_FORMAT,
+    $time,
+    $tempo,
+    $notes_final,
+    $rest_padding,
+    $beats
+);
+$file_name = md5($file_content);
+
+file_put_contents( OUTPUT_FOLDER . $file_name . ".ly", $file_content);
+exec(sprintf("lilypond --png -o %1\$s %1\$s$file_name.ly && convert %1\$s$file_name.png -trim %1\$s$file_name.png", OUTPUT_FOLDER));
+
+echo(render(
+    "./templates/index.tpl.php",
+    $locale,
+    array(
+        "id" => $id,
+        "time" => $time,
+        "tempo" => $tempo,
+        "bars" => $bars,
+        "file_name" => $file_name,
+        "dynamic_beat" => $dynamic_beat,
+        "dynamic_rhythm" => $dynamic_rhythm,
+    )
+));
+
+?>