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Code Issues Releases Wiki Activity

Add WOFF, WOFF2 to file sniffer

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This commit is contained in:
Jeff Schiller 2023-02-16 20:51:25 -08:00
parent 244dfed5d9
commit 2eb77ef59c
2 changed files with 8 additions and 2 deletions
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8
file/sniffer.js
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@ -8,7 +8,7 @@
*/ */
// A Container Format is a file that embeds multiple data streams into a single file. // A Container Format is a file that embeds multiple data streams into a single file.
// Relevant examples: // Examples:
// 1) the ISO-BMFF family (MP4, HEVC, AVIF, MOV/QT, etc) // 1) the ISO-BMFF family (MP4, HEVC, AVIF, MOV/QT, etc)
// 2) the Matroska family (MKV, WebM) // 2) the Matroska family (MKV, WebM)
// 3) the RIFF family (WAV, AVI, WebP) // 3) the RIFF family (WAV, AVI, WebP)
@ -66,6 +66,10 @@ const fileSignatures = {
], ],
'audio/wav': [[0x52, 0x49, 0x46, 0x46, '??', '??', '??', '??', 0x57, 0x41, 0x56, 0x45]], // 'RIFF....WAVE' 'audio/wav': [[0x52, 0x49, 0x46, 0x46, '??', '??', '??', '??', 0x57, 0x41, 0x56, 0x45]], // 'RIFF....WAVE'
'video/avi': [[0x52, 0x49, 0x46, 0x46, '??', '??', '??', '??', 0x41, 0x56, 0x49, 0x20]], // 'RIFF....AVI ' 'video/avi': [[0x52, 0x49, 0x46, 0x46, '??', '??', '??', '??', 0x41, 0x56, 0x49, 0x20]], // 'RIFF....AVI '
// Miscellaneous.
'font/woff': [[0x77, 0x4F, 0x46, 0x46]], // 'wOFF'
'font/woff2': [[0x77, 0x4F, 0x46, 0x32]], // 'wOF2'
}; };
// TODO: Eventually add support for various container formats so that: // TODO: Eventually add support for various container formats so that:
@ -102,7 +106,7 @@ let maxDepth = 0;
export function initialize() { export function initialize() {
root = new Node(); root = new Node();
// Construct the tree, erroring if overlapping mime types are possible. // Construct the tree, erroring if overlapping mime types are found.
for (const mimeType in fileSignatures) { for (const mimeType in fileSignatures) {
for (const signature of fileSignatures[mimeType]) { for (const signature of fileSignatures[mimeType]) {
let curNode = root; let curNode = root;

2
tests/file-sniffer.spec.js
View file

@ -40,4 +40,6 @@ describe('bitjs.file.sniffer', () => {
it('FLAC', () => { sniffTest('audio/flac', [0x66, 0x4C, 0x61, 0x43]); }); it('FLAC', () => { sniffTest('audio/flac', [0x66, 0x4C, 0x61, 0x43]); });
it('WAV', () => { sniffTest('audio/wav', [0x52, 0x49, 0x46, 0x46, 0x01, 0x02, 0x03, 0x04, 0x57, 0x41, 0x56, 0x45, 0x81]); }); it('WAV', () => { sniffTest('audio/wav', [0x52, 0x49, 0x46, 0x46, 0x01, 0x02, 0x03, 0x04, 0x57, 0x41, 0x56, 0x45, 0x81]); });
it('AVI', () => { sniffTest('video/avi', [0x52, 0x49, 0x46, 0x46, 0x01, 0x02, 0x03, 0x04, 0x41, 0x56, 0x49, 0x20, 0x81]); }); it('AVI', () => { sniffTest('video/avi', [0x52, 0x49, 0x46, 0x46, 0x01, 0x02, 0x03, 0x04, 0x41, 0x56, 0x49, 0x20, 0x81]); });
it('WOFF', () => { sniffTest('font/woff', [0x77, 0x4F, 0x46, 0x46, 0x80]); });
it('WOFF2', () => { sniffTest('font/woff2', [0x77, 0x4F, 0x46, 0x32, 0x80]); });
}); });