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| Viewing file: Select action/file-type: /*
* utrie 1.0.2 <https://github.com/niklasvh/utrie>
* Copyright (c) 2022 Niklas von Hertzen <https://hertzen.com>
* Released under MIT License
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.utrie = {}));
}(this, (function (exports) { 'use strict';
var chars$1 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
// Use a lookup table to find the index.
var lookup$1 = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
for (var i$1 = 0; i$1 < chars$1.length; i$1++) {
lookup$1[chars$1.charCodeAt(i$1)] = i$1;
}
var decode = function (base64) {
var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;
if (base64[base64.length - 1] === '=') {
bufferLength--;
if (base64[base64.length - 2] === '=') {
bufferLength--;
}
}
var buffer = typeof ArrayBuffer !== 'undefined' &&
typeof Uint8Array !== 'undefined' &&
typeof Uint8Array.prototype.slice !== 'undefined'
? new ArrayBuffer(bufferLength)
: new Array(bufferLength);
var bytes = Array.isArray(buffer) ? buffer : new Uint8Array(buffer);
for (i = 0; i < len; i += 4) {
encoded1 = lookup$1[base64.charCodeAt(i)];
encoded2 = lookup$1[base64.charCodeAt(i + 1)];
encoded3 = lookup$1[base64.charCodeAt(i + 2)];
encoded4 = lookup$1[base64.charCodeAt(i + 3)];
bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
}
return buffer;
};
var polyUint16Array = function (buffer) {
var length = buffer.length;
var bytes = [];
for (var i = 0; i < length; i += 2) {
bytes.push((buffer[i + 1] << 8) | buffer[i]);
}
return bytes;
};
var polyUint32Array = function (buffer) {
var length = buffer.length;
var bytes = [];
for (var i = 0; i < length; i += 4) {
bytes.push((buffer[i + 3] << 24) | (buffer[i + 2] << 16) | (buffer[i + 1] << 8) | buffer[i]);
}
return bytes;
};
/** Shift size for getting the index-2 table offset. */
var UTRIE2_SHIFT_2 = 5;
/** Shift size for getting the index-1 table offset. */
var UTRIE2_SHIFT_1 = 6 + 5;
/**
* Shift size for shifting left the index array values.
* Increases possible data size with 16-bit index values at the cost
* of compactability.
* This requires data blocks to be aligned by UTRIE2_DATA_GRANULARITY.
*/
var UTRIE2_INDEX_SHIFT = 2;
/**
* Difference between the two shift sizes,
* for getting an index-1 offset from an index-2 offset. 6=11-5
*/
var UTRIE2_SHIFT_1_2 = UTRIE2_SHIFT_1 - UTRIE2_SHIFT_2;
/**
* The part of the index-2 table for U+D800..U+DBFF stores values for
* lead surrogate code _units_ not code _points_.
* Values for lead surrogate code _points_ are indexed with this portion of the table.
* Length=32=0x20=0x400>>UTRIE2_SHIFT_2. (There are 1024=0x400 lead surrogates.)
*/
var UTRIE2_LSCP_INDEX_2_OFFSET = 0x10000 >> UTRIE2_SHIFT_2;
/** Number of entries in a data block. 32=0x20 */
var UTRIE2_DATA_BLOCK_LENGTH = 1 << UTRIE2_SHIFT_2;
/** Mask for getting the lower bits for the in-data-block offset. */
var UTRIE2_DATA_MASK = UTRIE2_DATA_BLOCK_LENGTH - 1;
var UTRIE2_LSCP_INDEX_2_LENGTH = 0x400 >> UTRIE2_SHIFT_2;
/** Count the lengths of both BMP pieces. 2080=0x820 */
var UTRIE2_INDEX_2_BMP_LENGTH = UTRIE2_LSCP_INDEX_2_OFFSET + UTRIE2_LSCP_INDEX_2_LENGTH;
/**
* The 2-byte UTF-8 version of the index-2 table follows at offset 2080=0x820.
* Length 32=0x20 for lead bytes C0..DF, regardless of UTRIE2_SHIFT_2.
*/
var UTRIE2_UTF8_2B_INDEX_2_OFFSET = UTRIE2_INDEX_2_BMP_LENGTH;
var UTRIE2_UTF8_2B_INDEX_2_LENGTH = 0x800 >> 6; /* U+0800 is the first code point after 2-byte UTF-8 */
/**
* The index-1 table, only used for supplementary code points, at offset 2112=0x840.
* Variable length, for code points up to highStart, where the last single-value range starts.
* Maximum length 512=0x200=0x100000>>UTRIE2_SHIFT_1.
* (For 0x100000 supplementary code points U+10000..U+10ffff.)
*
* The part of the index-2 table for supplementary code points starts
* after this index-1 table.
*
* Both the index-1 table and the following part of the index-2 table
* are omitted completely if there is only BMP data.
*/
var UTRIE2_INDEX_1_OFFSET = UTRIE2_UTF8_2B_INDEX_2_OFFSET + UTRIE2_UTF8_2B_INDEX_2_LENGTH;
/**
* Number of index-1 entries for the BMP. 32=0x20
* This part of the index-1 table is omitted from the serialized form.
*/
var UTRIE2_OMITTED_BMP_INDEX_1_LENGTH = 0x10000 >> UTRIE2_SHIFT_1;
/** Number of entries in an index-2 block. 64=0x40 */
var UTRIE2_INDEX_2_BLOCK_LENGTH = 1 << UTRIE2_SHIFT_1_2;
/** Mask for getting the lower bits for the in-index-2-block offset. */
var UTRIE2_INDEX_2_MASK = UTRIE2_INDEX_2_BLOCK_LENGTH - 1;
var slice16 = function (view, start, end) {
if (view.slice) {
return view.slice(start, end);
}
return new Uint16Array(Array.prototype.slice.call(view, start, end));
};
var slice32 = function (view, start, end) {
if (view.slice) {
return view.slice(start, end);
}
return new Uint32Array(Array.prototype.slice.call(view, start, end));
};
var createTrieFromBase64 = function (base64, _byteLength) {
var buffer = decode(base64);
var view32 = Array.isArray(buffer) ? polyUint32Array(buffer) : new Uint32Array(buffer);
var view16 = Array.isArray(buffer) ? polyUint16Array(buffer) : new Uint16Array(buffer);
var headerLength = 24;
var index = slice16(view16, headerLength / 2, view32[4] / 2);
var data = view32[5] === 2
? slice16(view16, (headerLength + view32[4]) / 2)
: slice32(view32, Math.ceil((headerLength + view32[4]) / 4));
return new Trie(view32[0], view32[1], view32[2], view32[3], index, data);
};
var Trie = /** @class */ (function () {
function Trie(initialValue, errorValue, highStart, highValueIndex, index, data) {
this.initialValue = initialValue;
this.errorValue = errorValue;
this.highStart = highStart;
this.highValueIndex = highValueIndex;
this.index = index;
this.data = data;
}
/**
* Get the value for a code point as stored in the Trie.
*
* @param codePoint the code point
* @return the value
*/
Trie.prototype.get = function (codePoint) {
var ix;
if (codePoint >= 0) {
if (codePoint < 0x0d800 || (codePoint > 0x0dbff && codePoint <= 0x0ffff)) {
// Ordinary BMP code point, excluding leading surrogates.
// BMP uses a single level lookup. BMP index starts at offset 0 in the Trie2 index.
// 16 bit data is stored in the index array itself.
ix = this.index[codePoint >> UTRIE2_SHIFT_2];
ix = (ix << UTRIE2_INDEX_SHIFT) + (codePoint & UTRIE2_DATA_MASK);
return this.data[ix];
}
if (codePoint <= 0xffff) {
// Lead Surrogate Code Point. A Separate index section is stored for
// lead surrogate code units and code points.
// The main index has the code unit data.
// For this function, we need the code point data.
// Note: this expression could be refactored for slightly improved efficiency, but
// surrogate code points will be so rare in practice that it's not worth it.
ix = this.index[UTRIE2_LSCP_INDEX_2_OFFSET + ((codePoint - 0xd800) >> UTRIE2_SHIFT_2)];
ix = (ix << UTRIE2_INDEX_SHIFT) + (codePoint & UTRIE2_DATA_MASK);
return this.data[ix];
}
if (codePoint < this.highStart) {
// Supplemental code point, use two-level lookup.
ix = UTRIE2_INDEX_1_OFFSET - UTRIE2_OMITTED_BMP_INDEX_1_LENGTH + (codePoint >> UTRIE2_SHIFT_1);
ix = this.index[ix];
ix += (codePoint >> UTRIE2_SHIFT_2) & UTRIE2_INDEX_2_MASK;
ix = this.index[ix];
ix = (ix << UTRIE2_INDEX_SHIFT) + (codePoint & UTRIE2_DATA_MASK);
return this.data[ix];
}
if (codePoint <= 0x10ffff) {
return this.data[this.highValueIndex];
}
}
// Fall through. The code point is outside of the legal range of 0..0x10ffff.
return this.errorValue;
};
return Trie;
}());
/*
* base64-arraybuffer 1.0.2 <https://github.com/niklasvh/base64-arraybuffer>
* Copyright (c) 2022 Niklas von Hertzen <https://hertzen.com>
* Released under MIT License
*/
var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
// Use a lookup table to find the index.
var lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
for (var i = 0; i < chars.length; i++) {
lookup[chars.charCodeAt(i)] = i;
}
var encode = function (arraybuffer) {
var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';
for (i = 0; i < len; i += 3) {
base64 += chars[bytes[i] >> 2];
base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
base64 += chars[bytes[i + 2] & 63];
}
if (len % 3 === 2) {
base64 = base64.substring(0, base64.length - 1) + '=';
}
else if (len % 3 === 1) {
base64 = base64.substring(0, base64.length - 2) + '==';
}
return base64;
};
/**
* Trie2 constants, defining shift widths, index array lengths, etc.
*
* These are needed for the runtime macros but users can treat these as
* implementation details and skip to the actual public API further below.
*/
// const UTRIE2_OPTIONS_VALUE_BITS_MASK = 0x000f;
/** Number of code points per index-1 table entry. 2048=0x800 */
var UTRIE2_CP_PER_INDEX_1_ENTRY = 1 << UTRIE2_SHIFT_1;
/** The alignment size of a data block. Also the granularity for compaction. */
var UTRIE2_DATA_GRANULARITY = 1 << UTRIE2_INDEX_SHIFT;
/* Fixed layout of the first part of the index array. ------------------- */
/**
* The BMP part of the index-2 table is fixed and linear and starts at offset 0.
* Length=2048=0x800=0x10000>>UTRIE2_SHIFT_2.
*/
var UTRIE2_INDEX_2_OFFSET = 0;
var UTRIE2_MAX_INDEX_1_LENGTH = 0x100000 >> UTRIE2_SHIFT_1;
/*
* Fixed layout of the first part of the data array. -----------------------
* Starts with 4 blocks (128=0x80 entries) for ASCII.
*/
/**
* The illegal-UTF-8 data block follows the ASCII block, at offset 128=0x80.
* Used with linear access for single bytes 0..0xbf for simple error handling.
* Length 64=0x40, not UTRIE2_DATA_BLOCK_LENGTH.
*/
var UTRIE2_BAD_UTF8_DATA_OFFSET = 0x80;
/** The start of non-linear-ASCII data blocks, at offset 192=0xc0. */
var UTRIE2_DATA_START_OFFSET = 0xc0;
/* Building a Trie2 ---------------------------------------------------------- */
/*
* These definitions are mostly needed by utrie2_builder.c, but also by
* utrie2_get32() and utrie2_enum().
*/
/*
* At build time, leave a gap in the index-2 table,
* at least as long as the maximum lengths of the 2-byte UTF-8 index-2 table
* and the supplementary index-1 table.
* Round up to UTRIE2_INDEX_2_BLOCK_LENGTH for proper compacting.
*/
var UNEWTRIE2_INDEX_GAP_OFFSET = UTRIE2_INDEX_2_BMP_LENGTH;
var UNEWTRIE2_INDEX_GAP_LENGTH = (UTRIE2_UTF8_2B_INDEX_2_LENGTH + UTRIE2_MAX_INDEX_1_LENGTH + UTRIE2_INDEX_2_MASK) & ~UTRIE2_INDEX_2_MASK;
/**
* Maximum length of the build-time index-2 array.
* Maximum number of Unicode code points (0x110000) shifted right by UTRIE2_SHIFT_2,
* plus the part of the index-2 table for lead surrogate code points,
* plus the build-time index gap,
* plus the null index-2 block.
*/
var UNEWTRIE2_MAX_INDEX_2_LENGTH = (0x110000 >> UTRIE2_SHIFT_2) +
UTRIE2_LSCP_INDEX_2_LENGTH +
UNEWTRIE2_INDEX_GAP_LENGTH +
UTRIE2_INDEX_2_BLOCK_LENGTH;
var UNEWTRIE2_INDEX_1_LENGTH = 0x110000 >> UTRIE2_SHIFT_1;
/**
* Maximum length of the build-time data array.
* One entry per 0x110000 code points, plus the illegal-UTF-8 block and the null block,
* plus values for the 0x400 surrogate code units.
*/
var UNEWTRIE2_MAX_DATA_LENGTH = 0x110000 + 0x40 + 0x40 + 0x400;
/* Start with allocation of 16k data entries. */
var UNEWTRIE2_INITIAL_DATA_LENGTH = 1 << 14;
/* Grow about 8x each time. */
var UNEWTRIE2_MEDIUM_DATA_LENGTH = 1 << 17;
/** The null index-2 block, following the gap in the index-2 table. */
var UNEWTRIE2_INDEX_2_NULL_OFFSET = UNEWTRIE2_INDEX_GAP_OFFSET + UNEWTRIE2_INDEX_GAP_LENGTH;
/** The start of allocated index-2 blocks. */
var UNEWTRIE2_INDEX_2_START_OFFSET = UNEWTRIE2_INDEX_2_NULL_OFFSET + UTRIE2_INDEX_2_BLOCK_LENGTH;
/**
* The null data block.
* Length 64=0x40 even if UTRIE2_DATA_BLOCK_LENGTH is smaller,
* to work with 6-bit trail bytes from 2-byte UTF-8.
*/
var UNEWTRIE2_DATA_NULL_OFFSET = UTRIE2_DATA_START_OFFSET;
/** The start of allocated data blocks. */
var UNEWTRIE2_DATA_START_OFFSET = UNEWTRIE2_DATA_NULL_OFFSET + 0x40;
/**
* The start of data blocks for U+0800 and above.
* Below, compaction uses a block length of 64 for 2-byte UTF-8.
* From here on, compaction uses UTRIE2_DATA_BLOCK_LENGTH.
* Data values for 0x780 code points beyond ASCII.
*/
var UNEWTRIE2_DATA_0800_OFFSET = UNEWTRIE2_DATA_START_OFFSET + 0x780;
/**
* Maximum length of the runtime index array.
* Limited by its own 16-bit index values, and by uint16_t UTrie2Header.indexLength.
* (The actual maximum length is lower,
* (0x110000>>UTRIE2_SHIFT_2)+UTRIE2_UTF8_2B_INDEX_2_LENGTH+UTRIE2_MAX_INDEX_1_LENGTH.)
*/
var UTRIE2_MAX_INDEX_LENGTH = 0xffff;
/**
* Maximum length of the runtime data array.
* Limited by 16-bit index values that are left-shifted by UTRIE2_INDEX_SHIFT,
* and by uint16_t UTrie2Header.shiftedDataLength.
*/
var UTRIE2_MAX_DATA_LENGTH = 0xffff << UTRIE2_INDEX_SHIFT;
var BITS_16 = 16;
var BITS_32 = 32;
var isHighSurrogate = function (c) { return c >= 0xd800 && c <= 0xdbff; };
var equalInt = function (a, s, t, length) {
for (var i = 0; i < length; i++) {
if (a[s + i] !== a[t + i]) {
return false;
}
}
return true;
};
var TrieBuilder = /** @class */ (function () {
function TrieBuilder(initialValue, errorValue) {
if (initialValue === void 0) { initialValue = 0; }
if (errorValue === void 0) { errorValue = 0; }
this.initialValue = initialValue;
this.errorValue = errorValue;
this.highStart = 0x110000;
this.data = new Uint32Array(UNEWTRIE2_INITIAL_DATA_LENGTH);
this.dataCapacity = UNEWTRIE2_INITIAL_DATA_LENGTH;
this.highStart = 0x110000;
this.firstFreeBlock = 0; /* no free block in the list */
this.isCompacted = false;
this.index1 = new Uint32Array(UNEWTRIE2_INDEX_1_LENGTH);
this.index2 = new Uint32Array(UNEWTRIE2_MAX_INDEX_2_LENGTH);
/*
* Multi-purpose per-data-block table.
*
* Before compacting:
*
* Per-data-block reference counters/free-block list.
* 0: unused
* >0: reference counter (number of index-2 entries pointing here)
* <0: next free data block in free-block list
*
* While compacting:
*
* Map of adjusted indexes, used in compactData() and compactIndex2().
* Maps from original indexes to new ones.
*/
this.map = new Uint32Array(UNEWTRIE2_MAX_DATA_LENGTH >> UTRIE2_SHIFT_2);
/*
* preallocate and reset
* - ASCII
* - the bad-UTF-8-data block
* - the null data block
*/
var i, j;
for (i = 0; i < 0x80; ++i) {
this.data[i] = initialValue;
}
for (; i < 0xc0; ++i) {
this.data[i] = errorValue;
}
for (i = UNEWTRIE2_DATA_NULL_OFFSET; i < UNEWTRIE2_DATA_START_OFFSET; ++i) {
this.data[i] = initialValue;
}
this.dataNullOffset = UNEWTRIE2_DATA_NULL_OFFSET;
this.dataLength = UNEWTRIE2_DATA_START_OFFSET;
/* set the index-2 indexes for the 2=0x80>>UTRIE2_SHIFT_2 ASCII data blocks */
for (i = 0, j = 0; j < 0x80; ++i, j += UTRIE2_DATA_BLOCK_LENGTH) {
this.index2[i] = j;
this.map[i] = 1;
}
/* reference counts for the bad-UTF-8-data block */
for (; j < 0xc0; ++i, j += UTRIE2_DATA_BLOCK_LENGTH) {
this.map[i] = 0;
}
/*
* Reference counts for the null data block: all blocks except for the ASCII blocks.
* Plus 1 so that we don't drop this block during compaction.
* Plus as many as needed for lead surrogate code points.
*/
/* i==newTrie->dataNullOffset */
this.map[i++] = (0x110000 >> UTRIE2_SHIFT_2) - (0x80 >> UTRIE2_SHIFT_2) + 1 + UTRIE2_LSCP_INDEX_2_LENGTH;
j += UTRIE2_DATA_BLOCK_LENGTH;
for (; j < UNEWTRIE2_DATA_START_OFFSET; ++i, j += UTRIE2_DATA_BLOCK_LENGTH) {
this.map[i] = 0;
}
/*
* set the remaining indexes in the BMP index-2 block
* to the null data block
*/
for (i = 0x80 >> UTRIE2_SHIFT_2; i < UTRIE2_INDEX_2_BMP_LENGTH; ++i) {
this.index2[i] = UNEWTRIE2_DATA_NULL_OFFSET;
}
/*
* Fill the index gap with impossible values so that compaction
* does not overlap other index-2 blocks with the gap.
*/
for (i = 0; i < UNEWTRIE2_INDEX_GAP_LENGTH; ++i) {
this.index2[UNEWTRIE2_INDEX_GAP_OFFSET + i] = -1;
}
/* set the indexes in the null index-2 block */
for (i = 0; i < UTRIE2_INDEX_2_BLOCK_LENGTH; ++i) {
this.index2[UNEWTRIE2_INDEX_2_NULL_OFFSET + i] = UNEWTRIE2_DATA_NULL_OFFSET;
}
this.index2NullOffset = UNEWTRIE2_INDEX_2_NULL_OFFSET;
this.index2Length = UNEWTRIE2_INDEX_2_START_OFFSET;
/* set the index-1 indexes for the linear index-2 block */
for (i = 0, j = 0; i < UTRIE2_OMITTED_BMP_INDEX_1_LENGTH; ++i, j += UTRIE2_INDEX_2_BLOCK_LENGTH) {
this.index1[i] = j;
}
/* set the remaining index-1 indexes to the null index-2 block */
for (; i < UNEWTRIE2_INDEX_1_LENGTH; ++i) {
this.index1[i] = UNEWTRIE2_INDEX_2_NULL_OFFSET;
}
/*
* Preallocate and reset data for U+0080..U+07ff,
* for 2-byte UTF-8 which will be compacted in 64-blocks
* even if UTRIE2_DATA_BLOCK_LENGTH is smaller.
*/
for (i = 0x80; i < 0x800; i += UTRIE2_DATA_BLOCK_LENGTH) {
this.set(i, initialValue);
}
}
/**
* Set a value for a code point.
*
* @param c the code point
* @param value the value
*/
TrieBuilder.prototype.set = function (c, value) {
if (c < 0 || c > 0x10ffff) {
throw new Error('Invalid code point.');
}
this._set(c, true, value);
return this;
};
/**
* Set a value in a range of code points [start..end].
* All code points c with start<=c<=end will get the value if
* overwrite is TRUE or if the old value is the initial value.
*
* @param start the first code point to get the value
* @param end the last code point to get the value (inclusive)
* @param value the value
* @param overwrite flag for whether old non-initial values are to be overwritten
*/
TrieBuilder.prototype.setRange = function (start, end, value, overwrite) {
if (overwrite === void 0) { overwrite = false; }
/*
* repeat value in [start..end]
* mark index values for repeat-data blocks by setting bit 31 of the index values
* fill around existing values if any, if(overwrite)
*/
var block, rest, repeatBlock;
if (start > 0x10ffff || start < 0 || end > 0x10ffff || end < 0 || start > end) {
throw new Error('Invalid code point range.');
}
if (!overwrite && value === this.initialValue) {
return this; /* nothing to do */
}
if (this.isCompacted) {
throw new Error('Trie was already compacted');
}
var limit = end + 1;
if ((start & UTRIE2_DATA_MASK) !== 0) {
/* set partial block at [start..following block boundary[ */
block = this.getDataBlock(start, true);
var nextStart = (start + UTRIE2_DATA_BLOCK_LENGTH) & ~UTRIE2_DATA_MASK;
if (nextStart <= limit) {
this.fillBlock(block, start & UTRIE2_DATA_MASK, UTRIE2_DATA_BLOCK_LENGTH, value, this.initialValue, overwrite);
start = nextStart;
}
else {
this.fillBlock(block, start & UTRIE2_DATA_MASK, limit & UTRIE2_DATA_MASK, value, this.initialValue, overwrite);
return this;
}
}
/* number of positions in the last, partial block */
rest = limit & UTRIE2_DATA_MASK;
/* round down limit to a block boundary */
limit &= ~UTRIE2_DATA_MASK;
/* iterate over all-value blocks */
repeatBlock = value === this.initialValue ? this.dataNullOffset : -1;
while (start < limit) {
var i2 = void 0;
var setRepeatBlock = false;
if (value === this.initialValue && this.isInNullBlock(start, true)) {
start += UTRIE2_DATA_BLOCK_LENGTH; /* nothing to do */
continue;
}
/* get index value */
i2 = this.getIndex2Block(start, true);
i2 += (start >> UTRIE2_SHIFT_2) & UTRIE2_INDEX_2_MASK;
block = this.index2[i2];
if (this.isWritableBlock(block)) {
/* already allocated */
if (overwrite && block >= UNEWTRIE2_DATA_0800_OFFSET) {
/*
* We overwrite all values, and it's not a
* protected (ASCII-linear or 2-byte UTF-8) block:
* replace with the repeatBlock.
*/
setRepeatBlock = true;
}
else {
/* !overwrite, or protected block: just write the values into this block */
this.fillBlock(block, 0, UTRIE2_DATA_BLOCK_LENGTH, value, this.initialValue, overwrite);
}
}
else if (this.data[block] !== value && (overwrite || block === this.dataNullOffset)) {
/*
* Set the repeatBlock instead of the null block or previous repeat block:
*
* If !isWritableBlock() then all entries in the block have the same value
* because it's the null block or a range block (the repeatBlock from a previous
* call to utrie2_setRange32()).
* No other blocks are used multiple times before compacting.
*
* The null block is the only non-writable block with the initialValue because
* of the repeatBlock initialization above. (If value==initialValue, then
* the repeatBlock will be the null data block.)
*
* We set our repeatBlock if the desired value differs from the block's value,
* and if we overwrite any data or if the data is all initial values
* (which is the same as the block being the null block, see above).
*/
setRepeatBlock = true;
}
if (setRepeatBlock) {
if (repeatBlock >= 0) {
this.setIndex2Entry(i2, repeatBlock);
}
else {
/* create and set and fill the repeatBlock */
repeatBlock = this.getDataBlock(start, true);
this.writeBlock(repeatBlock, value);
}
}
start += UTRIE2_DATA_BLOCK_LENGTH;
}
if (rest > 0) {
/* set partial block at [last block boundary..limit[ */
block = this.getDataBlock(start, true);
this.fillBlock(block, 0, rest, value, this.initialValue, overwrite);
}
return this;
};
/**
* Get the value for a code point as stored in the Trie2.
*
* @param codePoint the code point
* @return the value
*/
TrieBuilder.prototype.get = function (codePoint) {
if (codePoint < 0 || codePoint > 0x10ffff) {
return this.errorValue;
}
else {
return this._get(codePoint, true);
}
};
TrieBuilder.prototype._get = function (c, fromLSCP) {
var i2;
if (c >= this.highStart && (!(c >= 0xd800 && c < 0xdc00) || fromLSCP)) {
return this.data[this.dataLength - UTRIE2_DATA_GRANULARITY];
}
if (c >= 0xd800 && c < 0xdc00 && fromLSCP) {
i2 = UTRIE2_LSCP_INDEX_2_OFFSET - (0xd800 >> UTRIE2_SHIFT_2) + (c >> UTRIE2_SHIFT_2);
}
else {
i2 = this.index1[c >> UTRIE2_SHIFT_1] + ((c >> UTRIE2_SHIFT_2) & UTRIE2_INDEX_2_MASK);
}
var block = this.index2[i2];
return this.data[block + (c & UTRIE2_DATA_MASK)];
};
TrieBuilder.prototype.freeze = function (valueBits) {
if (valueBits === void 0) { valueBits = BITS_32; }
var i;
var allIndexesLength;
var dataMove; /* >0 if the data is moved to the end of the index array */
/* compact if necessary */
if (!this.isCompacted) {
this.compactTrie();
}
allIndexesLength = this.highStart <= 0x10000 ? UTRIE2_INDEX_1_OFFSET : this.index2Length;
if (valueBits === BITS_16) {
// dataMove = allIndexesLength;
dataMove = 0;
}
else {
dataMove = 0;
}
/* are indexLength and dataLength within limits? */
if (
/* for unshifted indexLength */
allIndexesLength > UTRIE2_MAX_INDEX_LENGTH ||
/* for unshifted dataNullOffset */
dataMove + this.dataNullOffset > 0xffff ||
/* for unshifted 2-byte UTF-8 index-2 values */
dataMove + UNEWTRIE2_DATA_0800_OFFSET > 0xffff ||
/* for shiftedDataLength */
dataMove + this.dataLength > UTRIE2_MAX_DATA_LENGTH) {
throw new Error('Trie data is too large.');
}
var index = new Uint16Array(allIndexesLength);
/* write the index-2 array values shifted right by UTRIE2_INDEX_SHIFT, after adding dataMove */
var destIdx = 0;
for (i = 0; i < UTRIE2_INDEX_2_BMP_LENGTH; i++) {
index[destIdx++] = (this.index2[i] + dataMove) >> UTRIE2_INDEX_SHIFT;
}
/* write UTF-8 2-byte index-2 values, not right-shifted */
for (i = 0; i < 0xc2 - 0xc0; ++i) {
/* C0..C1 */
index[destIdx++] = dataMove + UTRIE2_BAD_UTF8_DATA_OFFSET;
}
for (; i < 0xe0 - 0xc0; ++i) {
/* C2..DF */
index[destIdx++] = dataMove + this.index2[i << (6 - UTRIE2_SHIFT_2)];
}
if (this.highStart > 0x10000) {
var index1Length = (this.highStart - 0x10000) >> UTRIE2_SHIFT_1;
var index2Offset = UTRIE2_INDEX_2_BMP_LENGTH + UTRIE2_UTF8_2B_INDEX_2_LENGTH + index1Length;
/* write 16-bit index-1 values for supplementary code points */
for (i = 0; i < index1Length; i++) {
index[destIdx++] = UTRIE2_INDEX_2_OFFSET + this.index1[i + UTRIE2_OMITTED_BMP_INDEX_1_LENGTH];
}
/*
* write the index-2 array values for supplementary code points,
* shifted right by UTRIE2_INDEX_SHIFT, after adding dataMove
*/
for (i = 0; i < this.index2Length - index2Offset; i++) {
index[destIdx++] = (dataMove + this.index2[index2Offset + i]) >> UTRIE2_INDEX_SHIFT;
}
}
/* write the 16/32-bit data array */
switch (valueBits) {
case BITS_16:
/* write 16-bit data values */
var data16 = new Uint16Array(this.dataLength);
for (i = 0; i < this.dataLength; i++) {
data16[i] = this.data[i];
}
return new Trie(this.initialValue, this.errorValue, this.highStart, dataMove + this.dataLength - UTRIE2_DATA_GRANULARITY, index, data16);
case BITS_32:
/* write 32-bit data values */
var data32 = new Uint32Array(this.dataLength);
for (i = 0; i < this.dataLength; i++) {
data32[i] = this.data[i];
}
return new Trie(this.initialValue, this.errorValue, this.highStart, dataMove + this.dataLength - UTRIE2_DATA_GRANULARITY, index, data32);
default:
throw new Error('Bits should be either 16 or 32');
}
};
/*
* Find the start of the last range in the trie by enumerating backward.
* Indexes for supplementary code points higher than this will be omitted.
*/
TrieBuilder.prototype.findHighStart = function (highValue) {
var value;
var i2, j, i2Block, prevI2Block, block, prevBlock;
/* set variables for previous range */
if (highValue === this.initialValue) {
prevI2Block = this.index2NullOffset;
prevBlock = this.dataNullOffset;
}
else {
prevI2Block = -1;
prevBlock = -1;
}
var prev = 0x110000;
/* enumerate index-2 blocks */
var i1 = UNEWTRIE2_INDEX_1_LENGTH;
var c = prev;
while (c > 0) {
i2Block = this.index1[--i1];
if (i2Block === prevI2Block) {
/* the index-2 block is the same as the previous one, and filled with highValue */
c -= UTRIE2_CP_PER_INDEX_1_ENTRY;
continue;
}
prevI2Block = i2Block;
if (i2Block === this.index2NullOffset) {
/* this is the null index-2 block */
if (highValue !== this.initialValue) {
return c;
}
c -= UTRIE2_CP_PER_INDEX_1_ENTRY;
}
else {
/* enumerate data blocks for one index-2 block */
for (i2 = UTRIE2_INDEX_2_BLOCK_LENGTH; i2 > 0;) {
block = this.index2[i2Block + --i2];
if (block === prevBlock) {
/* the block is the same as the previous one, and filled with highValue */
c -= UTRIE2_DATA_BLOCK_LENGTH;
continue;
}
prevBlock = block;
if (block === this.dataNullOffset) {
/* this is the null data block */
if (highValue !== this.initialValue) {
return c;
}
c -= UTRIE2_DATA_BLOCK_LENGTH;
}
else {
for (j = UTRIE2_DATA_BLOCK_LENGTH; j > 0;) {
value = this.data[block + --j];
if (value !== highValue) {
return c;
}
--c;
}
}
}
}
}
/* deliver last range */
return 0;
};
/*
* Compact a build-time trie.
*
* The compaction
* - removes blocks that are identical with earlier ones
* - overlaps adjacent blocks as much as possible (if overlap==TRUE)
* - moves blocks in steps of the data granularity
* - moves and overlaps blocks that overlap with multiple values in the overlap region
*
* It does not
* - try to move and overlap blocks that are not already adjacent
*/
TrieBuilder.prototype.compactData = function () {
var start, movedStart;
var blockLength, overlap;
var i, mapIndex, blockCount;
/* do not compact linear-ASCII data */
var newStart = UTRIE2_DATA_START_OFFSET;
for (start = 0, i = 0; start < newStart; start += UTRIE2_DATA_BLOCK_LENGTH, ++i) {
this.map[i] = start;
}
/*
* Start with a block length of 64 for 2-byte UTF-8,
* then switch to UTRIE2_DATA_BLOCK_LENGTH.
*/
blockLength = 64;
blockCount = blockLength >> UTRIE2_SHIFT_2;
for (start = newStart; start < this.dataLength;) {
/*
* start: index of first entry of current block
* newStart: index where the current block is to be moved
* (right after current end of already-compacted data)
*/
if (start === UNEWTRIE2_DATA_0800_OFFSET) {
blockLength = UTRIE2_DATA_BLOCK_LENGTH;
blockCount = 1;
}
/* skip blocks that are not used */
if (this.map[start >> UTRIE2_SHIFT_2] <= 0) {
/* advance start to the next block */
start += blockLength;
/* leave newStart with the previous block! */
continue;
}
/* search for an identical block */
movedStart = this.findSameDataBlock(newStart, start, blockLength);
if (movedStart >= 0) {
/* found an identical block, set the other block's index value for the current block */
for (i = blockCount, mapIndex = start >> UTRIE2_SHIFT_2; i > 0; --i) {
this.map[mapIndex++] = movedStart;
movedStart += UTRIE2_DATA_BLOCK_LENGTH;
}
/* advance start to the next block */
start += blockLength;
/* leave newStart with the previous block! */
continue;
}
/* see if the beginning of this block can be overlapped with the end of the previous block */
/* look for maximum overlap (modulo granularity) with the previous, adjacent block */
for (overlap = blockLength - UTRIE2_DATA_GRANULARITY; overlap > 0 && !equalInt(this.data, newStart - overlap, start, overlap); overlap -= UTRIE2_DATA_GRANULARITY) { }
if (overlap > 0 || newStart < start) {
/* some overlap, or just move the whole block */
movedStart = newStart - overlap;
for (i = blockCount, mapIndex = start >> UTRIE2_SHIFT_2; i > 0; --i) {
this.map[mapIndex++] = movedStart;
movedStart += UTRIE2_DATA_BLOCK_LENGTH;
}
/* move the non-overlapping indexes to their new positions */
start += overlap;
for (i = blockLength - overlap; i > 0; --i) {
this.data[newStart++] = this.data[start++];
}
}
else {
/* no overlap && newStart==start */
for (i = blockCount, mapIndex = start >> UTRIE2_SHIFT_2; i > 0; --i) {
this.map[mapIndex++] = start;
start += UTRIE2_DATA_BLOCK_LENGTH;
}
newStart = start;
}
}
/* now adjust the index-2 table */
for (i = 0; i < this.index2Length; ++i) {
if (i === UNEWTRIE2_INDEX_GAP_OFFSET) {
/* Gap indexes are invalid (-1). Skip over the gap. */
i += UNEWTRIE2_INDEX_GAP_LENGTH;
}
this.index2[i] = this.map[this.index2[i] >> UTRIE2_SHIFT_2];
}
this.dataNullOffset = this.map[this.dataNullOffset >> UTRIE2_SHIFT_2];
/* ensure dataLength alignment */
while ((newStart & (UTRIE2_DATA_GRANULARITY - 1)) !== 0) {
this.data[newStart++] = this.initialValue;
}
this.dataLength = newStart;
};
TrieBuilder.prototype.findSameDataBlock = function (dataLength, otherBlock, blockLength) {
var block = 0;
/* ensure that we do not even partially get past dataLength */
dataLength -= blockLength;
for (; block <= dataLength; block += UTRIE2_DATA_GRANULARITY) {
if (equalInt(this.data, block, otherBlock, blockLength)) {
return block;
}
}
return -1;
};
TrieBuilder.prototype.compactTrie = function () {
var highValue = this.get(0x10ffff);
/* find highStart and round it up */
var localHighStart = this.findHighStart(highValue);
localHighStart = (localHighStart + (UTRIE2_CP_PER_INDEX_1_ENTRY - 1)) & ~(UTRIE2_CP_PER_INDEX_1_ENTRY - 1);
if (localHighStart === 0x110000) {
highValue = this.errorValue;
}
/*
* Set trie->highStart only after utrie2_get32(trie, highStart).
* Otherwise utrie2_get32(trie, highStart) would try to read the highValue.
*/
this.highStart = localHighStart;
if (this.highStart < 0x110000) {
/* Blank out [highStart..10ffff] to release associated data blocks. */
var suppHighStart = this.highStart <= 0x10000 ? 0x10000 : this.highStart;
this.setRange(suppHighStart, 0x10ffff, this.initialValue, true);
}
this.compactData();
if (this.highStart > 0x10000) {
this.compactIndex2();
}
/*
* Store the highValue in the data array and round up the dataLength.
* Must be done after compactData() because that assumes that dataLength
* is a multiple of UTRIE2_DATA_BLOCK_LENGTH.
*/
this.data[this.dataLength++] = highValue;
while ((this.dataLength & (UTRIE2_DATA_GRANULARITY - 1)) !== 0) {
this.data[this.dataLength++] = this.initialValue;
}
this.isCompacted = true;
};
TrieBuilder.prototype.compactIndex2 = function () {
var i, start, movedStart, overlap;
/* do not compact linear-BMP index-2 blocks */
var newStart = UTRIE2_INDEX_2_BMP_LENGTH;
for (start = 0, i = 0; start < newStart; start += UTRIE2_INDEX_2_BLOCK_LENGTH, ++i) {
this.map[i] = start;
}
/* Reduce the index table gap to what will be needed at runtime. */
newStart += UTRIE2_UTF8_2B_INDEX_2_LENGTH + ((this.highStart - 0x10000) >> UTRIE2_SHIFT_1);
for (start = UNEWTRIE2_INDEX_2_NULL_OFFSET; start < this.index2Length;) {
/*
* start: index of first entry of current block
* newStart: index where the current block is to be moved
* (right after current end of already-compacted data)
*/
/* search for an identical block */
if ((movedStart = this.findSameIndex2Block(newStart, start)) >= 0) {
/* found an identical block, set the other block's index value for the current block */
this.map[start >> UTRIE2_SHIFT_1_2] = movedStart;
/* advance start to the next block */
start += UTRIE2_INDEX_2_BLOCK_LENGTH;
/* leave newStart with the previous block! */
continue;
}
/* see if the beginning of this block can be overlapped with the end of the previous block */
/* look for maximum overlap with the previous, adjacent block */
for (overlap = UTRIE2_INDEX_2_BLOCK_LENGTH - 1; overlap > 0 && !equalInt(this.index2, newStart - overlap, start, overlap); --overlap) { }
if (overlap > 0 || newStart < start) {
/* some overlap, or just move the whole block */
this.map[start >> UTRIE2_SHIFT_1_2] = newStart - overlap;
/* move the non-overlapping indexes to their new positions */
start += overlap;
for (i = UTRIE2_INDEX_2_BLOCK_LENGTH - overlap; i > 0; --i) {
this.index2[newStart++] = this.index2[start++];
}
}
else {
/* no overlap && newStart==start */ this.map[start >> UTRIE2_SHIFT_1_2] = start;
start += UTRIE2_INDEX_2_BLOCK_LENGTH;
newStart = start;
}
}
/* now adjust the index-1 table */
for (i = 0; i < UNEWTRIE2_INDEX_1_LENGTH; ++i) {
this.index1[i] = this.map[this.index1[i] >> UTRIE2_SHIFT_1_2];
}
this.index2NullOffset = this.map[this.index2NullOffset >> UTRIE2_SHIFT_1_2];
/*
* Ensure data table alignment:
* Needs to be granularity-aligned for 16-bit trie
* (so that dataMove will be down-shiftable),
* and 2-aligned for uint32_t data.
*/
while ((newStart & ((UTRIE2_DATA_GRANULARITY - 1) | 1)) !== 0) {
/* Arbitrary value: 0x3fffc not possible for real data. */
this.index2[newStart++] = 0x0000ffff << UTRIE2_INDEX_SHIFT;
}
this.index2Length = newStart;
};
TrieBuilder.prototype.findSameIndex2Block = function (index2Length, otherBlock) {
/* ensure that we do not even partially get past index2Length */
index2Length -= UTRIE2_INDEX_2_BLOCK_LENGTH;
for (var block = 0; block <= index2Length; ++block) {
if (equalInt(this.index2, block, otherBlock, UTRIE2_INDEX_2_BLOCK_LENGTH)) {
return block;
}
}
return -1;
};
TrieBuilder.prototype._set = function (c, forLSCP, value) {
if (this.isCompacted) {
throw new Error('Trie was already compacted');
}
var block = this.getDataBlock(c, forLSCP);
this.data[block + (c & UTRIE2_DATA_MASK)] = value;
return this;
};
TrieBuilder.prototype.writeBlock = function (block, value) {
var limit = block + UTRIE2_DATA_BLOCK_LENGTH;
while (block < limit) {
this.data[block++] = value;
}
};
TrieBuilder.prototype.isInNullBlock = function (c, forLSCP) {
var i2 = isHighSurrogate(c) && forLSCP
? UTRIE2_LSCP_INDEX_2_OFFSET - (0xd800 >> UTRIE2_SHIFT_2) + (c >> UTRIE2_SHIFT_2)
: this.index1[c >> UTRIE2_SHIFT_1] + ((c >> UTRIE2_SHIFT_2) & UTRIE2_INDEX_2_MASK);
var block = this.index2[i2];
return block === this.dataNullOffset;
};
TrieBuilder.prototype.fillBlock = function (block, start, limit, value, initialValue, overwrite) {
var pLimit = block + limit;
if (overwrite) {
for (var i = block + start; i < pLimit; i++) {
this.data[i] = value;
}
}
else {
for (var i = block + start; i < pLimit; i++) {
if (this.data[i] === initialValue) {
this.data[i] = value;
}
}
}
};
TrieBuilder.prototype.setIndex2Entry = function (i2, block) {
++this.map[block >> UTRIE2_SHIFT_2]; /* increment first, in case block==oldBlock! */
var oldBlock = this.index2[i2];
if (0 === --this.map[oldBlock >> UTRIE2_SHIFT_2]) {
this.releaseDataBlock(oldBlock);
}
this.index2[i2] = block;
};
TrieBuilder.prototype.releaseDataBlock = function (block) {
/* put this block at the front of the free-block chain */
this.map[block >> UTRIE2_SHIFT_2] = -this.firstFreeBlock;
this.firstFreeBlock = block;
};
TrieBuilder.prototype.getDataBlock = function (c, forLSCP) {
var i2 = this.getIndex2Block(c, forLSCP);
i2 += (c >> UTRIE2_SHIFT_2) & UTRIE2_INDEX_2_MASK;
var oldBlock = this.index2[i2];
if (this.isWritableBlock(oldBlock)) {
return oldBlock;
}
/* allocate a new data block */
var newBlock = this.allocDataBlock(oldBlock);
this.setIndex2Entry(i2, newBlock);
return newBlock;
};
TrieBuilder.prototype.isWritableBlock = function (block) {
return block !== this.dataNullOffset && 1 === this.map[block >> UTRIE2_SHIFT_2];
};
TrieBuilder.prototype.getIndex2Block = function (c, forLSCP) {
if (c >= 0xd800 && c < 0xdc00 && forLSCP) {
return UTRIE2_LSCP_INDEX_2_OFFSET;
}
var i1 = c >> UTRIE2_SHIFT_1;
var i2 = this.index1[i1];
if (i2 === this.index2NullOffset) {
i2 = this.allocIndex2Block();
this.index1[i1] = i2;
}
return i2;
};
TrieBuilder.prototype.allocDataBlock = function (copyBlock) {
var newBlock;
if (this.firstFreeBlock !== 0) {
/* get the first free block */
newBlock = this.firstFreeBlock;
this.firstFreeBlock = -this.map[newBlock >> UTRIE2_SHIFT_2];
}
else {
/* get a new block from the high end */
newBlock = this.dataLength;
var newTop = newBlock + UTRIE2_DATA_BLOCK_LENGTH;
if (newTop > this.dataCapacity) {
var capacity = void 0;
/* out of memory in the data array */
if (this.dataCapacity < UNEWTRIE2_MEDIUM_DATA_LENGTH) {
capacity = UNEWTRIE2_MEDIUM_DATA_LENGTH;
}
else if (this.dataCapacity < UNEWTRIE2_MAX_DATA_LENGTH) {
capacity = UNEWTRIE2_MAX_DATA_LENGTH;
}
else {
/*
* Should never occur.
* Either UNEWTRIE2_MAX_DATA_LENGTH is incorrect,
* or the code writes more values than should be possible.
*/
throw new Error('Internal error in Trie creation.');
}
var newData = new Uint32Array(capacity);
newData.set(this.data.subarray(0, this.dataLength));
this.data = newData;
this.dataCapacity = capacity;
}
this.dataLength = newTop;
}
this.data.set(this.data.subarray(copyBlock, copyBlock + UTRIE2_DATA_BLOCK_LENGTH), newBlock);
this.map[newBlock >> UTRIE2_SHIFT_2] = 0;
return newBlock;
};
TrieBuilder.prototype.allocIndex2Block = function () {
var newBlock = this.index2Length;
var newTop = newBlock + UTRIE2_INDEX_2_BLOCK_LENGTH;
if (newTop > this.index2.length) {
throw new Error('Internal error in Trie creation.');
/*
* Should never occur.
* Either UTRIE2_MAX_BUILD_TIME_INDEX_LENGTH is incorrect,
* or the code writes more values than should be possible.
*/
}
this.index2Length = newTop;
this.index2.set(this.index2.subarray(this.index2NullOffset, this.index2NullOffset + UTRIE2_INDEX_2_BLOCK_LENGTH), newBlock);
return newBlock;
};
return TrieBuilder;
}());
var serializeBase64 = function (trie) {
var index = trie.index;
var data = trie.data;
if (!(index instanceof Uint16Array) || !(data instanceof Uint16Array || data instanceof Uint32Array)) {
throw new Error('TrieBuilder serializer only support TypedArrays');
}
var headerLength = Uint32Array.BYTES_PER_ELEMENT * 6;
var bufferLength = headerLength + index.byteLength + data.byteLength;
var buffer = new ArrayBuffer(Math.ceil(bufferLength / 4) * 4);
var view32 = new Uint32Array(buffer);
var view16 = new Uint16Array(buffer);
view32[0] = trie.initialValue;
view32[1] = trie.errorValue;
view32[2] = trie.highStart;
view32[3] = trie.highValueIndex;
view32[4] = index.byteLength;
// $FlowFixMe
view32[5] = data.BYTES_PER_ELEMENT;
view16.set(index, headerLength / Uint16Array.BYTES_PER_ELEMENT);
if (data.BYTES_PER_ELEMENT === Uint16Array.BYTES_PER_ELEMENT) {
view16.set(data, (headerLength + index.byteLength) / Uint16Array.BYTES_PER_ELEMENT);
}
else {
view32.set(data, Math.ceil((headerLength + index.byteLength) / Uint32Array.BYTES_PER_ELEMENT));
}
return [encode(new Uint8Array(buffer)), buffer.byteLength];
};
exports.Trie = Trie;
exports.TrieBuilder = TrieBuilder;
exports.createTrieFromBase64 = createTrieFromBase64;
exports.serializeBase64 = serializeBase64;
Object.defineProperty(exports, '__esModule', { value: true });
})));
//# sourceMappingURL=utrie.umd.js.map
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