Maintenance

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x, 16x]
 
     steps:
     - uses: actions/checkout@v2

src/encoding/index.ts

@@ -7,10 +7,10 @@ export interface Recogniser {
 }
 
 export interface Context {
-  fByteStats: number[];
-  fC1Bytes: boolean;
-  fRawInput: Uint8Array;
-  fRawLength: number;
-  fInputBytes: Uint8Array;
-  fInputLen: number;
+  byteStats: number[];
+  c1Bytes: boolean;
+  rawInput: Uint8Array;
+  rawLen: number;
+  inputBytes: Uint8Array;
+  inputLen: number;
 }

src/encoding/iso2022.ts

@@ -36,8 +36,8 @@ class ISO_2022 implements Recogniser {
     let quality;
 
     // TODO: refactor me
-    const text = det.fInputBytes;
-    const textLen = det.fInputLen;
+    const text = det.inputBytes;
+    const textLen = det.inputLen;
 
     scanInput: for (i = 0; i < textLen; i++) {
       if (text[i] == 0x1b) {

src/encoding/mbcs.ts

@@ -64,11 +64,11 @@ class IteratedChar {
   }
 
   nextByte(det: Context) {
-    if (this.nextIndex >= det.fRawLength) {
+    if (this.nextIndex >= det.rawLen) {
       this.done = true;
       return -1;
     }
-    const byteValue = det.fRawInput[this.nextIndex++] & 0x00ff;
+    const byteValue = det.rawInput[this.nextIndex++] & 0x00ff;
     return byteValue;
   }
 }

src/encoding/sbcs.ts

@@ -58,9 +58,9 @@ class NGramParser {
   }
 
   nextByte(det: Context) {
-    if (this.byteIndex >= det.fInputLen) return -1;
+    if (this.byteIndex >= det.inputLen) return -1;
 
-    return det.fInputBytes[this.byteIndex++] & 0xff;
+    return det.inputBytes[this.byteIndex++] & 0xff;
   }
 
   parse(det: Context, spaceCh: number) {
@@ -1080,7 +1080,7 @@ export class ISO_8859_1 extends sbcs {
   }
 
   name(input: Context): string {
-    return input && input.fC1Bytes ? 'windows-1252' : 'ISO-8859-1';
+    return input && input.c1Bytes ? 'windows-1252' : 'ISO-8859-1';
   }
 }
 
@@ -1616,7 +1616,7 @@ export class ISO_8859_2 extends sbcs {
   }
 
   name(det: Context): string {
-    return det && det.fC1Bytes ? 'windows-1250' : 'ISO-8859-2';
+    return det && det.c1Bytes ? 'windows-1250' : 'ISO-8859-2';
   }
 }
 
@@ -2632,7 +2632,7 @@ export class ISO_8859_7 extends sbcs {
   }
 
   name(det: Context): string {
-    return det && det.fC1Bytes ? 'windows-1253' : 'ISO-8859-7';
+    return det && det.c1Bytes ? 'windows-1253' : 'ISO-8859-7';
   }
 
   language() {
@@ -3040,7 +3040,7 @@ export class ISO_8859_8 extends sbcs {
   }
 
   name(det: Context): string {
-    return det && det.fC1Bytes ? 'windows-1255' : 'ISO-8859-8';
+    return det && det.c1Bytes ? 'windows-1255' : 'ISO-8859-8';
   }
 
   language() {
@@ -3380,7 +3380,7 @@ export class ISO_8859_9 extends sbcs {
   }
 
   name(det: Context): string {
-    return det && det.fC1Bytes ? 'windows-1254' : 'ISO-8859-9';
+    return det && det.c1Bytes ? 'windows-1254' : 'ISO-8859-9';
   }
 
   language() {
@@ -4425,7 +4425,7 @@ module.exports.ISO_8859_7 = function() {
   this.name = function(det) {
     if (typeof det == 'undefined')
       return 'ISO-8859-7';
-    return det.fC1Bytes ? 'windows-1253' : 'ISO-8859-7';
+    return det.c1Bytes ? 'windows-1253' : 'ISO-8859-7';
   };
 
   language() {

src/encoding/unicode.ts

@@ -11,7 +11,7 @@ export class UTF_16BE implements Recogniser {
   }
 
   match(det: Context): Match | null {
-    const input = det.fRawInput;
+    const input = det.rawInput;
 
     if (
       input.length >= 2 &&
@@ -31,7 +31,7 @@ export class UTF_16LE implements Recogniser {
     return 'UTF-16LE';
   }
   match(det: Context): Match | null {
-    const input = det.fRawInput;
+    const input = det.rawInput;
 
     if (
       input.length >= 2 &&
@@ -69,8 +69,8 @@ class UTF_32 implements Recogniser, WithGetChar {
       numInvalid = 0,
       hasBOM = false,
       confidence = 0;
-    const limit = (det.fRawLength / 4) * 4;
-    const input = det.fRawInput;
+    const limit = (det.rawLen / 4) * 4;
+    const input = det.rawInput;
 
     if (limit == 0) {
       return null;

src/encoding/utf8.ts

@@ -12,10 +12,10 @@ export default class Utf8 implements Recogniser {
       numInvalid = 0,
       trailBytes = 0,
       confidence;
-    const input = det.fRawInput;
+    const input = det.rawInput;
 
     if (
-      det.fRawLength >= 3 &&
+      det.rawLen >= 3 &&
       (input[0] & 0xff) == 0xef &&
       (input[1] & 0xff) == 0xbb &&
       (input[2] & 0xff) == 0xbf
@@ -24,7 +24,7 @@ export default class Utf8 implements Recogniser {
     }
 
     // Scan for multi-byte sequences
-    for (let i = 0; i < det.fRawLength; i++) {
+    for (let i = 0; i < det.rawLen; i++) {
       const b = input[i];
       if ((b & 0x80) == 0) continue; // ASCII
 
@@ -44,7 +44,7 @@ export default class Utf8 implements Recogniser {
       // Verify that we've got the right number of trail bytes in the sequence
       for (;;) {
         i++;
-        if (i >= det.fRawLength) break;
+        if (i >= det.rawLen) break;
 
         if ((input[i] & 0xc0) != 0x080) {
           numInvalid++;

src/index.ts

@@ -50,26 +50,26 @@ export const detect = (buffer: Uint8Array): string | null => {
 
 export const analyse = (buffer: Uint8Array): Match[] => {
   // Tally up the byte occurrence statistics.
-  const fByteStats = [];
-  for (let i = 0; i < 256; i++) fByteStats[i] = 0;
+  const byteStats = [];
+  for (let i = 0; i < 256; i++) byteStats[i] = 0;
 
-  for (let i = buffer.length - 1; i >= 0; i--) fByteStats[buffer[i] & 0x00ff]++;
+  for (let i = buffer.length - 1; i >= 0; i--) byteStats[buffer[i] & 0x00ff]++;
 
-  let fC1Bytes = false;
+  let c1Bytes = false;
   for (let i = 0x80; i <= 0x9f; i += 1) {
-    if (fByteStats[i] !== 0) {
-      fC1Bytes = true;
+    if (byteStats[i] !== 0) {
+      c1Bytes = true;
       break;
     }
   }
 
   const context: Context = {
-    fByteStats,
-    fC1Bytes,
-    fRawInput: buffer,
-    fRawLength: buffer.length,
-    fInputBytes: buffer,
-    fInputLen: buffer.length,
+    byteStats,
+    c1Bytes,
+    rawInput: buffer,
+    rawLen: buffer.length,
+    inputBytes: buffer,
+    inputLen: buffer.length,
   };
 
   const matches = recognisers