mirror of
https://github.com/gradle/gradle-build-action.git
synced 2024-11-23 17:42:10 +00:00
270 lines
6.9 KiB
JavaScript
270 lines
6.9 KiB
JavaScript
|
module.exports = Buffers;
|
||
|
|
||
|
function Buffers (bufs) {
|
||
|
if (!(this instanceof Buffers)) return new Buffers(bufs);
|
||
|
this.buffers = bufs || [];
|
||
|
this.length = this.buffers.reduce(function (size, buf) {
|
||
|
return size + buf.length
|
||
|
}, 0);
|
||
|
}
|
||
|
|
||
|
Buffers.prototype.push = function () {
|
||
|
for (var i = 0; i < arguments.length; i++) {
|
||
|
if (!Buffer.isBuffer(arguments[i])) {
|
||
|
throw new TypeError('Tried to push a non-buffer');
|
||
|
}
|
||
|
}
|
||
|
|
||
|
for (var i = 0; i < arguments.length; i++) {
|
||
|
var buf = arguments[i];
|
||
|
this.buffers.push(buf);
|
||
|
this.length += buf.length;
|
||
|
}
|
||
|
return this.length;
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.unshift = function () {
|
||
|
for (var i = 0; i < arguments.length; i++) {
|
||
|
if (!Buffer.isBuffer(arguments[i])) {
|
||
|
throw new TypeError('Tried to unshift a non-buffer');
|
||
|
}
|
||
|
}
|
||
|
|
||
|
for (var i = 0; i < arguments.length; i++) {
|
||
|
var buf = arguments[i];
|
||
|
this.buffers.unshift(buf);
|
||
|
this.length += buf.length;
|
||
|
}
|
||
|
return this.length;
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.copy = function (dst, dStart, start, end) {
|
||
|
return this.slice(start, end).copy(dst, dStart, 0, end - start);
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.splice = function (i, howMany) {
|
||
|
var buffers = this.buffers;
|
||
|
var index = i >= 0 ? i : this.length - i;
|
||
|
var reps = [].slice.call(arguments, 2);
|
||
|
|
||
|
if (howMany === undefined) {
|
||
|
howMany = this.length - index;
|
||
|
}
|
||
|
else if (howMany > this.length - index) {
|
||
|
howMany = this.length - index;
|
||
|
}
|
||
|
|
||
|
for (var i = 0; i < reps.length; i++) {
|
||
|
this.length += reps[i].length;
|
||
|
}
|
||
|
|
||
|
var removed = new Buffers();
|
||
|
var bytes = 0;
|
||
|
|
||
|
var startBytes = 0;
|
||
|
for (
|
||
|
var ii = 0;
|
||
|
ii < buffers.length && startBytes + buffers[ii].length < index;
|
||
|
ii ++
|
||
|
) { startBytes += buffers[ii].length }
|
||
|
|
||
|
if (index - startBytes > 0) {
|
||
|
var start = index - startBytes;
|
||
|
|
||
|
if (start + howMany < buffers[ii].length) {
|
||
|
removed.push(buffers[ii].slice(start, start + howMany));
|
||
|
|
||
|
var orig = buffers[ii];
|
||
|
//var buf = new Buffer(orig.length - howMany);
|
||
|
var buf0 = new Buffer(start);
|
||
|
for (var i = 0; i < start; i++) {
|
||
|
buf0[i] = orig[i];
|
||
|
}
|
||
|
|
||
|
var buf1 = new Buffer(orig.length - start - howMany);
|
||
|
for (var i = start + howMany; i < orig.length; i++) {
|
||
|
buf1[ i - howMany - start ] = orig[i]
|
||
|
}
|
||
|
|
||
|
if (reps.length > 0) {
|
||
|
var reps_ = reps.slice();
|
||
|
reps_.unshift(buf0);
|
||
|
reps_.push(buf1);
|
||
|
buffers.splice.apply(buffers, [ ii, 1 ].concat(reps_));
|
||
|
ii += reps_.length;
|
||
|
reps = [];
|
||
|
}
|
||
|
else {
|
||
|
buffers.splice(ii, 1, buf0, buf1);
|
||
|
//buffers[ii] = buf;
|
||
|
ii += 2;
|
||
|
}
|
||
|
}
|
||
|
else {
|
||
|
removed.push(buffers[ii].slice(start));
|
||
|
buffers[ii] = buffers[ii].slice(0, start);
|
||
|
ii ++;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (reps.length > 0) {
|
||
|
buffers.splice.apply(buffers, [ ii, 0 ].concat(reps));
|
||
|
ii += reps.length;
|
||
|
}
|
||
|
|
||
|
while (removed.length < howMany) {
|
||
|
var buf = buffers[ii];
|
||
|
var len = buf.length;
|
||
|
var take = Math.min(len, howMany - removed.length);
|
||
|
|
||
|
if (take === len) {
|
||
|
removed.push(buf);
|
||
|
buffers.splice(ii, 1);
|
||
|
}
|
||
|
else {
|
||
|
removed.push(buf.slice(0, take));
|
||
|
buffers[ii] = buffers[ii].slice(take);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
this.length -= removed.length;
|
||
|
|
||
|
return removed;
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.slice = function (i, j) {
|
||
|
var buffers = this.buffers;
|
||
|
if (j === undefined) j = this.length;
|
||
|
if (i === undefined) i = 0;
|
||
|
|
||
|
if (j > this.length) j = this.length;
|
||
|
|
||
|
var startBytes = 0;
|
||
|
for (
|
||
|
var si = 0;
|
||
|
si < buffers.length && startBytes + buffers[si].length <= i;
|
||
|
si ++
|
||
|
) { startBytes += buffers[si].length }
|
||
|
|
||
|
var target = new Buffer(j - i);
|
||
|
|
||
|
var ti = 0;
|
||
|
for (var ii = si; ti < j - i && ii < buffers.length; ii++) {
|
||
|
var len = buffers[ii].length;
|
||
|
|
||
|
var start = ti === 0 ? i - startBytes : 0;
|
||
|
var end = ti + len >= j - i
|
||
|
? Math.min(start + (j - i) - ti, len)
|
||
|
: len
|
||
|
;
|
||
|
|
||
|
buffers[ii].copy(target, ti, start, end);
|
||
|
ti += end - start;
|
||
|
}
|
||
|
|
||
|
return target;
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.pos = function (i) {
|
||
|
if (i < 0 || i >= this.length) throw new Error('oob');
|
||
|
var l = i, bi = 0, bu = null;
|
||
|
for (;;) {
|
||
|
bu = this.buffers[bi];
|
||
|
if (l < bu.length) {
|
||
|
return {buf: bi, offset: l};
|
||
|
} else {
|
||
|
l -= bu.length;
|
||
|
}
|
||
|
bi++;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.get = function get (i) {
|
||
|
var pos = this.pos(i);
|
||
|
|
||
|
return this.buffers[pos.buf].get(pos.offset);
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.set = function set (i, b) {
|
||
|
var pos = this.pos(i);
|
||
|
|
||
|
return this.buffers[pos.buf].set(pos.offset, b);
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.indexOf = function (needle, offset) {
|
||
|
if ("string" === typeof needle) {
|
||
|
needle = new Buffer(needle);
|
||
|
} else if (needle instanceof Buffer) {
|
||
|
// already a buffer
|
||
|
} else {
|
||
|
throw new Error('Invalid type for a search string');
|
||
|
}
|
||
|
|
||
|
if (!needle.length) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (!this.length) {
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
var i = 0, j = 0, match = 0, mstart, pos = 0;
|
||
|
|
||
|
// start search from a particular point in the virtual buffer
|
||
|
if (offset) {
|
||
|
var p = this.pos(offset);
|
||
|
i = p.buf;
|
||
|
j = p.offset;
|
||
|
pos = offset;
|
||
|
}
|
||
|
|
||
|
// for each character in virtual buffer
|
||
|
for (;;) {
|
||
|
while (j >= this.buffers[i].length) {
|
||
|
j = 0;
|
||
|
i++;
|
||
|
|
||
|
if (i >= this.buffers.length) {
|
||
|
// search string not found
|
||
|
return -1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
var char = this.buffers[i][j];
|
||
|
|
||
|
if (char == needle[match]) {
|
||
|
// keep track where match started
|
||
|
if (match == 0) {
|
||
|
mstart = {
|
||
|
i: i,
|
||
|
j: j,
|
||
|
pos: pos
|
||
|
};
|
||
|
}
|
||
|
match++;
|
||
|
if (match == needle.length) {
|
||
|
// full match
|
||
|
return mstart.pos;
|
||
|
}
|
||
|
} else if (match != 0) {
|
||
|
// a partial match ended, go back to match starting position
|
||
|
// this will continue the search at the next character
|
||
|
i = mstart.i;
|
||
|
j = mstart.j;
|
||
|
pos = mstart.pos;
|
||
|
match = 0;
|
||
|
}
|
||
|
|
||
|
j++;
|
||
|
pos++;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
Buffers.prototype.toBuffer = function() {
|
||
|
return this.slice();
|
||
|
}
|
||
|
|
||
|
Buffers.prototype.toString = function(encoding, start, end) {
|
||
|
return this.slice(start, end).toString(encoding);
|
||
|
}
|