@earvinpiamonte/pagasa-tcb-parser/dist/constants/patterns.js

A TypeScript library for parsing PAGASA weather bulletin PDF files

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.PATTERNS = exports.DIRECTIONS = void 0;
// Common cardinal/ordinal descriptors used in PAGASA bulletins
exports.DIRECTIONS = [
    "northwestern",
    "northeastern",
    "southeastern",
    "southwestern",
    "northern",
    "southern",
    "eastern",
    "western",
    "central",
];
const DIR_GROUP = exports.DIRECTIONS.join("|");
exports.PATTERNS = {
    tcws: /TROPICAL CYCLONE WIND SIGNALS.*?IN EFFECT(.*?)(?=OTHER HAZARDS|HAZARDS AFFECTING|$)/s,
    bulletinTitle: /(TROPICAL\s+CYCLONE\s+BULLETIN\s+NR\.\s*\d+[A-Z]?)/i,
    advisoryTitle: /(TROPICAL\s+CYCLONE\s+ADVISORY\s+NR\.\s*\d+[A-Z]?)/i,
    bulletinSubtitle: /(Tropical\s+Storm\s+[A-Z]+\s*\([^)]*\)|Typhoon\s+[A-Z]+\s*\([^)]*\)|Severe\s+Tropical\s+Storm\s+[A-Z]+\s*\([^)]*\)|Low\s+Pressure\s+Area\s*\([^)]*\))/i,
    // Classification header without trailing parentheses
    plainCycloneClassification: /(Tropical\s+Storm|Severe\s+Tropical\s+Storm|Typhoon)\s+[A-Z]{3,}(?!\s*\()/i,
    cycloneNames: /\b(Tropical\s+Storm|Typhoon|Severe\s+Tropical\s+Storm)\s+([A-Z]+)\s*\(([^)]+)\)/i,
    issued: /Issued\s+at\s+([A-Za-z]+\s+\d{1,2},\s*\d{4})\s*(\d{1,2}:\d{2})\s*(AM|PM)/i,
    validUntil: /Valid\s+Until\s*:?.{0,10}?([A-Za-z]+\s+\d{1,2},\s*\d{4})\s*(\d{1,2}:\d{2})\s*(AM|PM)/i,
    issuedAlt: /Issued\s+at\s+(\d{1,2}:\d{2})\s*(AM|PM),\s*(\d{1,2})\s+([A-Za-z]+)\s+(\d{4})/i, // time first then day Month Year
    validTodayTime: /Valid[^\n]*?at\s+(\d{1,2}:\d{2})\s*(AM|PM)\s+today\.?/i,
    signalNumber: /^[12345]\s*$/,
    tcwsNumber: /TCWS\s+No\.\s*([12345])/i,
    signalMatch: /^\s*([12345])\s*$/m,
    portionPattern: new RegExp(`^(the\\s+)?(${DIR_GROUP})\\s+portion\\s+of\\s+(.+)$`, // e.g. "northern portion of Cagayan"
    "i"),
    restPattern: /^(the\s+)?rest\s+of\s+/i,
    additionalPortion: new RegExp(`\\b(${DIR_GROUP})\\b`, "gi"),
    cleanPortion: new RegExp(`\\b(${DIR_GROUP})(\\s+portion\\s+of\\s+|\\s+)`, "gi"),
    parentheses: /\(([^)]+)\)/g,
    cleanExtra: /\s*-\s*-?\s*$/,
    normalizeSpace: /\s+/g,
    trailingDash: /\s*-\s*$/,
    trailingMultipleDash: /\s+(?:-\s*){1,3}$/g,
    dashOnly: /^-+$/,
    // skip generic metadata/noise lines commonly found in headers/footers
    skipMetadata: /^\s*\d+\s*$|bulletin|tropical|storm|issued|valid|broadcast|prepared|checked|tracking|weather|flood|forecasting|tel|senator|website|brgy|philippines|republic|department|science|technology|pagasa|atmospheric|geophysical|astronomical|services|administration|division|page\s+\d+/i,
    // skip lines for hazard descriptors and units anywhere in the line
    skipLine: /\b(Wind threat|Storm-force|Gale-force|Range of wind|Potential impacts|Warning lead time|Beaufort|km\/h|hours)\b/i,
    regionHeading: /^\s*(Luzon|Visayas|Mindanao)\s*[:\-]?\s*$/i,
    // keywords that often appear around area listings
    areaLineKeywords: /(portion\s+of|rest\s+of|mainland|islands?)/i,
    areaFiller: /^(?:winds|(?:strong|gale-force|storm-force)(?:\s+winds?)?)$/i,
};
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