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Different components of the AGL layers are under different licenses (a mix
of MIT and GPLv2). See LICENSE.GPL-2.0-only and LICENSE.MIT for further
details of the individual licenses.

All metadata (e.g. .bb, .bbappend, .bbclass, .inc, templates/* and similar)
is MIT licensed unless otherwise stated.
Source code included in tree for individual recipes (e.g. patches) are under
the LICENSE stated in the associated recipe (.bb file) unless otherwise stated.

License information for any other files (scripts) is either explicitly stated
or defaults to GPL version 2 only.

Individual files can contain the following style tags instead of the full
license text to identify their license:

    SPDX-License-Identifier: GPL-2.0-only
    SPDX-License-Identifier: MIT

This enables machine processing of license information based on the SPDX
License Identifiers that are here available: http://spdx.org/licenses/
0; background-color: #ffdddd } /* Generic.Deleted */ .highlight .ge { font-style: italic } /* Generic.Emph */ .highlight .gr { color: #aa0000 } /* Generic.Error */ .highlight .gh { color: #333333 } /* Generic.Heading */ .highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */ .highlight .go { color: #888888 } /* Generic.Output */ .highlight .gp { color: #555555 } /* Generic.Prompt */ .highlight .gs { font-weight: bold } /* Generic.Strong */ .highlight .gu { color: #666666 } /* Generic.Subheading */ .highlight .gt { color: #aa0000 } /* Generic.Traceback */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ } 
'use strict';

var utils = require('./utils');
var support = require('./support');
var nodeBuffer = require('./nodeBuffer');

/**
 * The following functions come from pako, from pako/lib/utils/strings
 * released under the MIT license, see pako https://github.com/nodeca/pako/
 */

// Table with utf8 lengths (calculated by first byte of sequence)
// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
// because max possible codepoint is 0x10ffff
var _utf8len = new Array(256);
for (var i=0; i<256; i++) {
  _utf8len[i] = (i >= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1);
}
_utf8len[254]=_utf8len[254]=1; // Invalid sequence start

// convert string to array (typed, when possible)
var string2buf = function (str) {
    var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;

    // count binary size
    for (m_pos = 0; m_pos < str_len; m_pos++) {
        c = str.charCodeAt(m_pos);
        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
            c2 = str.charCodeAt(m_pos+1);
            if ((c2 & 0xfc00) === 0xdc00) {
                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
                m_pos++;
            }
        }
        buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
    }

    // allocate buffer
    if (support.uint8array) {
        buf = new Uint8Array(buf_len);
    } else {
        buf = new Array(buf_len);
    }

    // convert
    for (i=0, m_pos = 0; i < buf_len; m_pos++) {
        c = str.charCodeAt(m_pos);
        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {
            c2 = str.charCodeAt(m_pos+1);
            if ((c2 & 0xfc00) === 0xdc00) {
                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
                m_pos++;
            }
        }
        if (c < 0x80) {
            /* one byte */
            buf[i++] = c;
        } else if (c < 0x800) {
            /* two bytes */
            buf[i++] = 0xC0 | (c >>> 6);
            buf[i++] = 0x80 | (c & 0x3f);
        } else if (c < 0x10000) {
            /* three bytes */
            buf[i++] = 0xE0 | (c >>> 12);
            buf[i++] = 0x80 | (c >>> 6 & 0x3f);
            buf[i++] = 0x80 | (c & 0x3f);
        } else {
            /* four bytes */
            buf[i++] = 0xf0 | (c >>> 18);
            buf[i++] = 0x80 | (c >>> 12 & 0x3f);
            buf[i++] = 0x80 | (c >>> 6 & 0x3f);
            buf[i++] = 0x80 | (c & 0x3f);
        }
    }

    return buf;
};

// Calculate max possible position in utf8 buffer,
// that will not break sequence. If that's not possible
// - (very small limits) return max size as is.
//
// buf[] - utf8 bytes array
// max   - length limit (mandatory);
var utf8border = function(buf, max) {
    var pos;

    max = max || buf.length;
    if (max > buf.length) { max = buf.length; }

    // go back from last position, until start of sequence found
    pos = max-1;
    while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }

    // Fuckup - very small and broken sequence,
    // return max, because we should return something anyway.
    if (pos < 0) { return max; }

    // If we came to start of buffer - that means vuffer is too small,
    // return max too.
    if (pos === 0) { return max; }

    return (pos + _utf8len[buf[pos]] > max) ? pos : max;
};

// convert array to string
var buf2string = function (buf) {
    var str, i, out, c, c_len;
    var len = buf.length;

    // Reserve max possible length (2 words per char)
    // NB: by unknown reasons, Array is significantly faster for
    //     String.fromCharCode.apply than Uint16Array.
    var utf16buf = new Array(len*2);

    for (out=0, i=0; i<len;) {
        c = buf[i++];
        // quick process ascii
        if (c < 0x80) { utf16buf[out++] = c; continue; }

        c_len = _utf8len[c];
        // skip 5 & 6 byte codes
        if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }

        // apply mask on first byte
        c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
        // join the rest
        while (c_len > 1 && i < len) {
            c = (c << 6) | (buf[i++] & 0x3f);
            c_len--;
        }

        // terminated by end of string?
        if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }

        if (c < 0x10000) {
            utf16buf[out++] = c;
        } else {
            c -= 0x10000;
            utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
            utf16buf[out++] = 0xdc00 | (c & 0x3ff);
        }
    }

    // shrinkBuf(utf16buf, out)
    if (utf16buf.length !== out) {
        if(utf16buf.subarray) {
            utf16buf = utf16buf.subarray(0, out);
        } else {
            utf16buf.length = out;
        }
    }

    // return String.fromCharCode.apply(null, utf16buf);
    return utils.applyFromCharCode(utf16buf);
};


// That's all for the pako functions.


/**
 * Transform a javascript string into an array (typed if possible) of bytes,
 * UTF-8 encoded.
 * @param {String} str the string to encode
 * @return {Array|Uint8Array|Buffer} the UTF-8 encoded string.
 */
exports.utf8encode = function utf8encode(str) {
    if (support.nodebuffer) {
        return nodeBuffer(str, "utf-8");
    }

    return string2buf(str);
};


/**
 * Transform a bytes array (or a representation) representing an UTF-8 encoded
 * string into a javascript string.
 * @param {Array|Uint8Array|Buffer} buf the data de decode
 * @return {String} the decoded string.
 */
exports.utf8decode = function utf8decode(buf) {
    if (support.nodebuffer) {
        return utils.transformTo("nodebuffer", buf).toString("utf-8");
    }

    buf = utils.transformTo(support.uint8array ? "uint8array" : "array", buf);

    // return buf2string(buf);
    // Chrome prefers to work with "small" chunks of data
    // for the method buf2string.
    // Firefox and Chrome has their own shortcut, IE doesn't seem to really care.
    var result = [], k = 0, len = buf.length, chunk = 65536;
    while (k < len) {
        var nextBoundary = utf8border(buf, Math.min(k + chunk, len));
        if (support.uint8array) {
            result.push(buf2string(buf.subarray(k, nextBoundary)));
        } else {
            result.push(buf2string(buf.slice(k, nextBoundary)));
        }
        k = nextBoundary;
    }
    return result.join("");

};
// vim: set shiftwidth=4 softtabstop=4: