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title: $:/plugins/local/org-gtd/library.js
type: application/javascript
module-type: library
/*\
title: $:/plugins/local/org-gtd/library.js
type: application/javascript
module-type: library
\*/
(function() {
"use strict";
var TODO_STATES = ["TODO","NEXT","WAIT","DONE"],
TODO_LOOKUP = Object.create(null),
HEADING_PATTERN = /^(\*+)\s+(?:(TODO|NEXT|WAIT|DONE)\s+)?(.*)$/,
TAG_PATTERN = /\s+:([A-Za-z0-9_@#%+.-]+(?::[A-Za-z0-9_@#%+.-]+)*):\s*$/,
DATE_PATTERN = /\b(SCHEDULED|DEADLINE):\s*<([0-9]{4}-[0-9]{2}-[0-9]{2})(?:\s+[^>]*)?>/g;
TODO_STATES.forEach(function(state) {
TODO_LOOKUP[state] = true;
});
function parseHeading(line,lineIndex) {
var match = HEADING_PATTERN.exec(line),
tagMatch,
title,
tags = [];
if(!match) {
return null;
}
title = match[3];
tagMatch = TAG_PATTERN.exec(title);
if(tagMatch) {
tags = tagMatch[1].split(":");
title = title.substring(0,tagMatch.index).trim();
}
return {
level: match[1].length,
state: match[2] || "",
title: title,
tags: tags,
line: lineIndex,
sourceLine: lineIndex + 1,
endLine: lineIndex,
scheduled: "",
deadline: ""
};
}
function parse(text) {
var lines = (text || "").split("\n"),
headings = [],
current = null;
lines.forEach(function(line,index) {
var heading = parseHeading(line,index),
match;
if(heading) {
if(current) {
current.endLine = index - 1;
}
headings.push(heading);
current = heading;
return;
}
if(current) {
DATE_PATTERN.lastIndex = 0;
while((match = DATE_PATTERN.exec(line)) !== null) {
if(match[1] === "SCHEDULED") {
current.scheduled = match[2];
} else {
current.deadline = match[2];
}
}
}
});
if(current) {
current.endLine = lines.length - 1;
}
for(var index = 0; index < headings.length; index++) {
var heading = headings[index],
nextIndex = index + 1;
while(nextIndex < headings.length && headings[nextIndex].level > heading.level) {
nextIndex++;
}
heading.subtreeEndLine = nextIndex < headings.length ? headings[nextIndex].line - 1 : lines.length - 1;
}
return {lines: lines,headings: headings};
}
function headingAtLine(parsed,line) {
var result = null;
parsed.headings.forEach(function(heading) {
if(heading.line <= line && heading.subtreeEndLine >= line) {
if(!result || heading.level >= result.level) {
result = heading;
}
}
});
return result;
}
function cycleState(line) {
var heading = parseHeading(line,0),
stars,
nextState,
rest;
if(!heading) {
return null;
}
stars = new Array(heading.level + 1).join("*");
if(heading.state) {
nextState = TODO_STATES[(TODO_STATES.indexOf(heading.state) + 1) % TODO_STATES.length];
rest = line.replace(/^(\*+)\s+(?:TODO|NEXT|WAIT|DONE)\s+/,"$1 " + nextState + " ");
} else {
rest = line.replace(/^(\*+)\s+/,"$1 TODO ");
}
return {line: rest,state: nextState || "TODO",level: stars.length};
}
function dateToTime(value) {
var match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(value || ""),
date;
if(!match) {
return NaN;
}
date = new Date(Number(match[1]),Number(match[2]) - 1,Number(match[3]));
if(date.getFullYear() !== Number(match[1]) || date.getMonth() !== Number(match[2]) - 1 || date.getDate() !== Number(match[3])) {
return NaN;
}
return date.getTime();
}
exports.TODO_STATES = TODO_STATES;
exports.TODO_LOOKUP = TODO_LOOKUP;
exports.parseHeading = parseHeading;
exports.parse = parse;
exports.headingAtLine = headingAtLine;
exports.cycleState = cycleState;
exports.dateToTime = dateToTime;
})();
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