1:   2:   3:   4:   5:   6:   7:   8:   9:  10:  11:  12:  13:  14:  15:  16:  17:  18:  19:  20:  21:  22:  23:  24:  25:  26:  27:  28:  29:  30:  31:  32:  33:  34:  35:  36:  37:  38:  39:  40:  41:  42:  43:  44:  45:  46:  47:  48:  49:  50:  51:  52:  53:  54:  55:  56:  57:  58:  59:  60:  61:  62:  63:  64:  65:  66:  67:  68:  69:  70:  71:  72:  73:  74:  75:  76:  77:  78:  79:  80:  81:  82:  83:  84:  85:  86:  87:  88:  89:  90:  91:  92:  93:  94:  95:  96:  97:  98:  99: 100: 101: 102: 103: 104: 105: 106: 107: 108: 109: 110: 111: 112: 113: 114: 115: 116: 117: 118: 119: 120: 121: 122: 123: 124: 125: 126: 127: 128: 129: 130: 131: 132: 133: 134: 135: 136: 137: 138: 139: 140: 141: 142: 143: 144: 145: 146: 147: 148: 149: 150: 151: 152: 153: 154: 155: 156: 157: 158: 159: 160: 161: 162: 163: 164: 165: 166: 167: 168: 169: 170: 171: 172: 173: 174: 175: 176: 177: 

<?php

/**
 * MvcCore
 *
 * This source file is subject to the BSD 3 License
 * For the full copyright and license information, please view
 * the LICENSE.md file that are distributed with this source code.
 *
 * @copyright   Copyright (c) 2016 Tom Flidr (https://github.com/mvccore)
 * @license  https://mvccore.github.io/docs/mvccore/5.0.0/LICENCE.md
 */

namespace MvcCore\Response;

trait Content {

    /**
     * @inheritDocs
     * @param string $body
     * @return \MvcCore\Response
     */
    public function SetBody ($body) {
        /** @var $this \MvcCore\Response */
        $this->body = & $body;
        return $this;
    }

    /**
     * @inheritDocs
     * @param string $body
     * @return \MvcCore\Response
     */
    public function PrependBody ($body) {
        /** @var $this \MvcCore\Response */
        $this->body = $body . $this->body;
        return $this;
    }

    /**
     * @inheritDocs
     * @param string $body
     * @return \MvcCore\Response
     */
    public function AppendBody ($body) {
        /** @var $this \MvcCore\Response */
        $this->body .= $body;
        return $this;
    }

    /**
     * @inheritDocs
     * @return string|NULL
     */
    public function & GetBody () {
        /** @var $this \MvcCore\Response */
        return $this->body;
    }

    /**
     * @inheritDocs
     * @return bool
     */
    public function IsHtmlOutput () {
        /** @var $this \MvcCore\Response */
        if (isset($this->headers['Content-Type'])) {
            $value = $this->headers['Content-Type'];
            return strpos($value, 'text/html') !== FALSE || strpos($value, 'application/xhtml+xml') !== FALSE;
        }
        return FALSE;
    }

    /**
     * @inheritDocs
     * @return bool
     */
    public function IsXmlOutput () {
        /** @var $this \MvcCore\Response */
        if (isset($this->headers['Content-Type'])) {
            $value = $this->headers['Content-Type'];
            return strpos($value, 'xml') !== FALSE;
        }
        return FALSE;
    }

    /**
     * @inheritDocs
     * @return bool
     */
    public function IsSentBody () {
        /** @var $this \MvcCore\Response */
        return $this->bodySent;
    }

    /**
     * @inheritDocs
     * @return \MvcCore\Response
     */
    public function Send () {
        /** @var $this \MvcCore\Response */
        return $this
            ->SendHeaders()
            ->SendBody();
    }

    /**
     * @inheritDocs
     * @return \MvcCore\Response
     */
    public function SendHeaders () {
        /** @var $this \MvcCore\Response */
        if (headers_sent()) return $this;
        $httpVersion = $this->GetHttpVersion();
        $code = $this->GetCode();
        $status = $this->codeMessage !== NULL
            ? ' '.$this->codeMessage
            : (isset(static::$codeMessages[$code])
                ? ' '.static::$codeMessages[$code]
                : '');
        $this->UpdateHeaders();
        if (!isset($this->headers['Content-Encoding']))
            $this->headers['Content-Encoding'] = $this->GetEncoding();
        //http_response_code($code);
        header($httpVersion . ' ' . $code . $status);
        header('Host: ' . $this->request->GetHost());
        foreach ($this->headers as $name => $value) {
            if ($name == 'Content-Type') {
                $charsetMatched = FALSE;
                $charsetPos = strpos($value, 'charset');
                if ($charsetPos !== FALSE) {
                    $equalPos = strpos($value, '=', $charsetPos);
                    if ($equalPos !== FALSE) $charsetMatched = TRUE;
                }
                if (!$charsetMatched) $value .= ';charset=' . $this->encoding;
            }
            if (isset($this->disabledHeaders[$name])) {
                header_remove($name);
            } else {
                header($name . ": " . $value);
            }
        }
        foreach ($this->disabledHeaders as $name => $b)
            header_remove($name);
        $this->addTimeAndMemoryHeader();
        return $this;
    }

    /**
     * @inheritDocs
     * @return \MvcCore\Response
     */
    public function SendBody () {
        /** @var $this \MvcCore\Response */
        if ($this->bodySent) return $this;
        echo $this->body;
        if (ob_get_level())
            ob_end_flush();
        flush();
        $this->bodySent = TRUE;
        return $this;
    }

    /**
     * Add CPU and RAM usage header at HTML/JSON response end.
     * @return void
     */
    protected function addTimeAndMemoryHeader () {
        /** @var $this \MvcCore\Response */
        $headerName = static::HEADER_X_MVCCORE_CPU_RAM;
        if (isset($this->disabledHeaders[$headerName])) return;
        $mtBegin = $this->request->GetStartTime();
        $time = number_format((microtime(TRUE) - $mtBegin) * 1000, 1, '.', ' ');
        $ram = function_exists('memory_get_peak_usage') ? number_format(memory_get_peak_usage() / 1000000, 2, '.', ' ') : 'n/a';
        header("{$headerName}: {$time} ms, {$ram} MB");
    }
}