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asciiarmor.js
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107 lines (54 loc) · 1.76 KB
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// From @codemirror/legacy-modes
function errorIfNotEmpty(stream) {
var nonWS = stream.match(/^\s*\S/);
stream.skipToEnd();
return nonWS ? "error" : null;
}
export const asciiArmor = {
name: "asciiarmor",
token: function(stream, state) {
var m;
if (state.state == "top") {
if (stream.sol() && (m = stream.match(/^-----BEGIN (.*)?-----\s*$/))) {
state.state = "headers";
state.type = m[1];
return "tag";
}
return errorIfNotEmpty(stream);
} else if (state.state == "headers") {
if (stream.sol() && stream.match(/^\w+:/)) {
state.state = "header";
return "atom";
} else {
var result = errorIfNotEmpty(stream);
if (result) state.state = "body";
return result;
}
} else if (state.state == "header") {
stream.skipToEnd();
state.state = "headers";
return "string";
} else if (state.state == "body") {
if (stream.sol() && (m = stream.match(/^-----END (.*)?-----\s*$/))) {
if (m[1] != state.type) return "error";
state.state = "end";
return "tag";
} else {
if (stream.eatWhile(/[A-Za-z0-9+\/=]/)) {
return null;
} else {
stream.next();
return "error";
}
}
} else if (state.state == "end") {
return errorIfNotEmpty(stream);
}
},
blankLine: function(state) {
if (state.state == "headers") state.state = "body";
},
startState: function() {
return {state: "top", type: null};
}
};