/*!
* Copyright (c) Squirrel Chat et al., All rights reserved.
* SPDX-License-Identifier: BSD-3-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import { TomlError } from './error.js';
export function indexOfNewline(str, start = 0, end = str.length) {
let idx = str.indexOf('\n', start);
if (str[idx - 1] === '\r')
idx--;
return idx <= end ? idx : -1;
}
export function skipComment(str, ptr) {
for (let i = ptr; i < str.length; i++) {
let c = str[i];
if (c === '\n')
return i;
if (c === '\r' && str[i + 1] === '\n')
return i + 1;
if ((c < '\x20' && c !== '\t') || c === '\x7f') {
throw new TomlError('control characters are not allowed in comments', {
toml: str,
ptr: ptr,
});
}
}
return str.length;
}
export function skipVoid(str, ptr, banNewLines, banComments) {
let c;
while (1) {
while ((c = str[ptr]) === ' ' || c === '\t' || (!banNewLines && (c === '\n' || (c === '\r' && str[ptr + 1] === '\n'))))
ptr++;
// Tucking the return statement here would save 5 characters >:)
// But TypeScript fails to detect there is no way to exit the loop so it complains about the lack of final return
if (banComments || c !== '#')
break;
ptr = skipComment(str, ptr);
}
return ptr;
}
export function skipUntil(str, ptr, sep, end, banNewLines = false) {
if (!end) {
ptr = indexOfNewline(str, ptr);
return ptr < 0 ? str.length : ptr;
}
for (let i = ptr; i < str.length; i++) {
let c = str[i];
if (c === '#') {
i = indexOfNewline(str, i);
}
else if (c === sep) {
return i + 1;
}
else if (c === end || (banNewLines && (c === '\n' || (c === '\r' && str[i + 1] === '\n')))) {
return i;
}
}
throw new TomlError('cannot find end of structure', {
toml: str,
ptr: ptr,
});
}
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