101 lines
3.8 KiB
JavaScript
101 lines
3.8 KiB
JavaScript
/*!
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* Copyright (c) Squirrel Chat et al., All rights reserved.
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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import { TomlError } from './error.js';
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export function indexOfNewline(str, start = 0, end = str.length) {
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let idx = str.indexOf('\n', start);
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if (str[idx - 1] === '\r')
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idx--;
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return idx <= end ? idx : -1;
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}
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export function skipComment(str, ptr) {
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for (let i = ptr; i < str.length; i++) {
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let c = str[i];
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if (c === '\n')
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return i;
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if (c === '\r' && str[i + 1] === '\n')
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return i + 1;
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if ((c < '\x20' && c !== '\t') || c === '\x7f') {
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throw new TomlError('control characters are not allowed in comments', {
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toml: str,
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ptr: ptr,
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});
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}
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}
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return str.length;
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}
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export function skipVoid(str, ptr, banNewLines, banComments) {
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let c;
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while ((c = str[ptr]) === ' ' || c === '\t' || (!banNewLines && (c === '\n' || c === '\r' && str[ptr + 1] === '\n')))
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ptr++;
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return banComments || c !== '#'
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? ptr
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: skipVoid(str, skipComment(str, ptr), banNewLines);
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}
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export function skipUntil(str, ptr, sep, end, banNewLines = false) {
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if (!end) {
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ptr = indexOfNewline(str, ptr);
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return ptr < 0 ? str.length : ptr;
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}
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for (let i = ptr; i < str.length; i++) {
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let c = str[i];
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if (c === '#') {
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i = indexOfNewline(str, i);
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}
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else if (c === sep) {
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return i + 1;
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}
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else if (c === end || (banNewLines && (c === '\n' || (c === '\r' && str[i + 1] === '\n')))) {
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return i;
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}
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}
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throw new TomlError('cannot find end of structure', {
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toml: str,
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ptr: ptr
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});
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}
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export function getStringEnd(str, seek) {
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let first = str[seek];
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let target = first === str[seek + 1] && str[seek + 1] === str[seek + 2]
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? str.slice(seek, seek + 3)
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: first;
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seek += target.length - 1;
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do
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seek = str.indexOf(target, ++seek);
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while (seek > -1 && first !== "'" && str[seek - 1] === '\\' && (str[seek - 2] !== '\\' || str[seek - 3] === '\\'));
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if (seek > -1) {
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seek += target.length;
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if (target.length > 1) {
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if (str[seek] === first)
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seek++;
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if (str[seek] === first)
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seek++;
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}
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}
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return seek;
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}
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