Press n or j to go to the next uncovered block, b, p or k for the previous block.
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const LINE_MAX = 4;
const LINE_MIN = 2;
const CHARS_PER_LINE = 18;
const CHARS_MAX_TOTAL = 18 + 18 + 16;
export const varRegex = new RegExp("\\$[VLT]?[0-9]+\\$", "g");
export const varCharRegex = new RegExp("#[VLT]?[0-9]+#", "g");
export const commandRegex = new RegExp("\\!S[0-5]\\!", "g");
export const newlineRegex = new RegExp("\n", "g");
export const dummyText = (text: string) => {
return text
.replace(varRegex, "$$$$$")
.replace(varCharRegex, "#")
.replace(commandRegex, "");
};
export const lineLength = (line: string) => {
return line
.replace(varRegex, "255")
.replace(varCharRegex, "C")
.replace(commandRegex, "").length;
};
export const totalLength = (line: string) => {
return line
.replace(newlineRegex, "")
.replace(varRegex, "255")
.replace(varCharRegex, "C")
.replace(commandRegex, "").length;
};
const cropLine = (line: string, maxLength: number): string => {
const len = lineLength(line);
if (len <= maxLength) {
return line;
}
const lenDiff = len - maxLength;
const cropped = line.substring(0, line.length - lenDiff);
return cropLine(cropped, maxLength);
};
const trimlines = (
string: string,
maxCharsPerLine = CHARS_PER_LINE,
maxLines = LINE_MAX,
maxTotal = CHARS_MAX_TOTAL
): string => {
let lengthCount = 0;
return (
string
.split("\n")
.map((line, lineIndex) => {
// Include whole line if under limits
if (lineLength(line) <= maxCharsPerLine) {
return line;
}
let cropped = line;
// If not last line
if (lineIndex < maxLines - 1) {
// Crop to last space if possible
if (cropped.indexOf(" ") > -1) {
while (cropped.indexOf(" ") > -1) {
const lastBreakSymbol = cropped.lastIndexOf(" ");
cropped = cropped.substring(0, lastBreakSymbol);
if (lineLength(cropped) <= maxCharsPerLine) {
return `${cropped}\n${trimlines(
line.substring(cropped.length + 1, line.length),
maxCharsPerLine,
maxLines
)}`;
}
}
}
}
// Fallback to just cropping the line to fit mid word
return cropLine(line, maxCharsPerLine);
})
.join("\n")
.split("\n")
.map((line) => {
lengthCount += lineLength(line);
if (lengthCount > maxTotal) {
const amountOver = lengthCount - maxTotal;
return line.substring(0, line.length - amountOver);
}
return line;
})
.slice(0, maxLines)
.join("\n")
// Crop to max 80 characters used in C string buffer
.substring(0, 80)
);
};
export const textNumLines = (string: string) =>
Math.max(LINE_MIN, (string || "").split("\n").length);
export const textNumNewlines = (input: string): number => {
// eslint-disable-next-line no-control-regex
return (input.match(/(\n|\r|\x0a|\x0d|\\012|\\015)/g)?.length ?? 0) + 1;
};
export default trimlines;
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