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import { isWhiteSpace } from './characterClasses.mjs';
/**
* Produces the value of a block string from its parsed raw value, similar to
* CoffeeScript's block string, Python's docstring trim or Ruby's strip_heredoc.
*
* This implements the GraphQL spec's BlockStringValue() static algorithm.
*
* @internal
*/
export function dedentBlockStringLines(lines) {
var _firstNonEmptyLine2;
let commonIndent = Number.MAX_SAFE_INTEGER;
let firstNonEmptyLine = null;
let lastNonEmptyLine = -1;
for (let i = 0; i < lines.length; ++i) {
var _firstNonEmptyLine;
const line = lines[i];
const indent = leadingWhitespace(line);
if (indent === line.length) {
continue; // skip empty lines
}
firstNonEmptyLine =
(_firstNonEmptyLine = firstNonEmptyLine) !== null &&
_firstNonEmptyLine !== void 0
? _firstNonEmptyLine
: i;
lastNonEmptyLine = i;
if (i !== 0 && indent < commonIndent) {
commonIndent = indent;
}
}
return lines // Remove common indentation from all lines but first.
.map((line, i) => (i === 0 ? line : line.slice(commonIndent))) // Remove leading and trailing blank lines.
.slice(
(_firstNonEmptyLine2 = firstNonEmptyLine) !== null &&
_firstNonEmptyLine2 !== void 0
? _firstNonEmptyLine2
: 0,
lastNonEmptyLine + 1,
);
}
function leadingWhitespace(str) {
let i = 0;
while (i < str.length && isWhiteSpace(str.charCodeAt(i))) {
++i;
}
return i;
}
/**
* @internal
*/
export function isPrintableAsBlockString(value) {
if (value === '') {
return true; // empty string is printable
}
let isEmptyLine = true;
let hasIndent = false;
let hasCommonIndent = true;
let seenNonEmptyLine = false;
for (let i = 0; i < value.length; ++i) {
switch (value.codePointAt(i)) {
case 0x0000:
case 0x0001:
case 0x0002:
case 0x0003:
case 0x0004:
case 0x0005:
case 0x0006:
case 0x0007:
case 0x0008:
case 0x000b:
case 0x000c:
case 0x000e:
case 0x000f:
return false;
// Has non-printable characters
case 0x000d:
// \r
return false;
// Has \r or \r\n which will be replaced as \n
case 10:
// \n
if (isEmptyLine && !seenNonEmptyLine) {
return false; // Has leading new line
}
seenNonEmptyLine = true;
isEmptyLine = true;
hasIndent = false;
break;
case 9: // \t
case 32:
// <space>
hasIndent || (hasIndent = isEmptyLine);
break;
default:
hasCommonIndent && (hasCommonIndent = hasIndent);
isEmptyLine = false;
}
}
if (isEmptyLine) {
return false; // Has trailing empty lines
}
if (hasCommonIndent && seenNonEmptyLine) {
return false; // Has internal indent
}
return true;
}
/**
* Print a block string in the indented block form by adding a leading and
* trailing blank line. However, if a block string starts with whitespace and is
* a single-line, adding a leading blank line would strip that whitespace.
*
* @internal
*/
export function printBlockString(value, options) {
const escapedValue = value.replace(/"""/g, '\\"""'); // Expand a block string's raw value into independent lines.
const lines = escapedValue.split(/\r\n|[\n\r]/g);
const isSingleLine = lines.length === 1; // If common indentation is found we can fix some of those cases by adding leading new line
const forceLeadingNewLine =
lines.length > 1 &&
lines
.slice(1)
.every((line) => line.length === 0 || isWhiteSpace(line.charCodeAt(0))); // Trailing triple quotes just looks confusing but doesn't force trailing new line
const hasTrailingTripleQuotes = escapedValue.endsWith('\\"""'); // Trailing quote (single or double) or slash forces trailing new line
const hasTrailingQuote = value.endsWith('"') && !hasTrailingTripleQuotes;
const hasTrailingSlash = value.endsWith('\\');
const forceTrailingNewline = hasTrailingQuote || hasTrailingSlash;
const printAsMultipleLines =
!(options !== null && options !== void 0 && options.minimize) && // add leading and trailing new lines only if it improves readability
(!isSingleLine ||
value.length > 70 ||
forceTrailingNewline ||
forceLeadingNewLine ||
hasTrailingTripleQuotes);
let result = ''; // Format a multi-line block quote to account for leading space.
const skipLeadingNewLine = isSingleLine && isWhiteSpace(value.charCodeAt(0));
if ((printAsMultipleLines && !skipLeadingNewLine) || forceLeadingNewLine) {
result += '\n';
}
result += escapedValue;
if (printAsMultipleLines || forceTrailingNewline) {
result += '\n';
}
return '"""' + result + '"""';
}