visual continunity

2026-06-17 22:07:18 -06:00
parent daa3010458
commit 89e14f8f9e
89 changed files with 19249 additions and 1367 deletions
@@ -0,0 +1,343 @@
+/**
+ * Incremental BLAKE3 hasher.
+ *
+ * ```js
+ * const h = new Blake3Hasher();
+ * h.update(chunkBytes);   // repeat per slice
+ * const hex = h.finalizeHex();
+ * ```
+ */
+export class Blake3Hasher {
+    __destroy_into_raw() {
+        const ptr = this.__wbg_ptr;
+        this.__wbg_ptr = 0;
+        Blake3HasherFinalization.unregister(this);
+        return ptr;
+    }
+    free() {
+        const ptr = this.__destroy_into_raw();
+        wasm.__wbg_blake3hasher_free(ptr, 0);
+    }
+    /**
+     * Bytes hashed so far — lets the worker report progress without
+     * tracking its own counter.
+     * @returns {number}
+     */
+    count() {
+        const ret = wasm.blake3hasher_count(this.__wbg_ptr);
+        return ret;
+    }
+    /**
+     * Finish and return the lowercase hex digest (64 chars). The hasher
+     * can keep receiving `update` calls afterwards (BLAKE3 finalization
+     * is non-destructive), but the frontend treats it as terminal.
+     * @returns {string}
+     */
+    finalizeHex() {
+        let deferred1_0;
+        let deferred1_1;
+        try {
+            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+            wasm.blake3hasher_finalizeHex(retptr, this.__wbg_ptr);
+            var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
+            var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
+            deferred1_0 = r0;
+            deferred1_1 = r1;
+            return getStringFromWasm0(r0, r1);
+        } finally {
+            wasm.__wbindgen_add_to_stack_pointer(16);
+            wasm.__wbindgen_export2(deferred1_0, deferred1_1, 1);
+        }
+    }
+    /**
+     * Create a fresh hasher.
+     */
+    constructor() {
+        const ret = wasm.blake3hasher_new();
+        this.__wbg_ptr = ret;
+        Blake3HasherFinalization.register(this, this.__wbg_ptr, this);
+        return this;
+    }
+    /**
+     * Feed one slice of the file.
+     * @param {Uint8Array} data
+     */
+    update(data) {
+        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export);
+        const len0 = WASM_VECTOR_LEN;
+        wasm.blake3hasher_update(this.__wbg_ptr, ptr0, len0);
+    }
+}
+if (Symbol.dispose) Blake3Hasher.prototype[Symbol.dispose] = Blake3Hasher.prototype.free;
+
+/**
+ * Incremental FastCDC chunker + whole-file BLAKE3, for the delta-upload
+ * worker. Feed the file in slices; every call returns the chunks that
+ * became FINAL; `finish()` flushes the tail and returns the file hash.
+ *
+ * ```js
+ * const c = new DeltaChunker();
+ * for (const slice of slices) {
+ *     for (const [h, s] of JSON.parse(c.update(bytes))) { … }
+ * }
+ * const { chunks, file_hash } = JSON.parse(c.finish());
+ * ```
+ *
+ * Correctness of the incremental split: FastCDC decides each cut by
+ * scanning at most `CDC_MAX_CHUNK` bytes from the chunk's start. When
+ * the chunker runs over the buffered prefix of a longer file, every
+ * produced chunk except the LAST ended on a content/max-size condition
+ * — its decision window was fully available, so the full-file chunker
+ * makes the same cut. Only the last chunk (cut by "end of buffer") is
+ * provisional: it stays buffered and is re-examined when more bytes
+ * arrive. By induction the emitted boundaries equal a single FastCDC
+ * pass over the whole file — the mirror test below proves it.
+ */
+export class DeltaChunker {
+    __destroy_into_raw() {
+        const ptr = this.__wbg_ptr;
+        this.__wbg_ptr = 0;
+        DeltaChunkerFinalization.unregister(this);
+        return ptr;
+    }
+    free() {
+        const ptr = this.__destroy_into_raw();
+        wasm.__wbg_deltachunker_free(ptr, 0);
+    }
+    /**
+     * Flush the provisional tail and return
+     * `{"chunks":[["<hex>",size]…],"file_hash":"<hex>","total":N}`.
+     * `chunks` holds at most one entry (the tail); an empty file has none
+     * and its `file_hash` is BLAKE3 of the empty input.
+     * @returns {string}
+     */
+    finish() {
+        let deferred1_0;
+        let deferred1_1;
+        try {
+            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+            wasm.deltachunker_finish(retptr, this.__wbg_ptr);
+            var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
+            var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
+            deferred1_0 = r0;
+            deferred1_1 = r1;
+            return getStringFromWasm0(r0, r1);
+        } finally {
+            wasm.__wbindgen_add_to_stack_pointer(16);
+            wasm.__wbindgen_export2(deferred1_0, deferred1_1, 1);
+        }
+    }
+    /**
+     * Create a chunker with the server's CDC parameters.
+     */
+    constructor() {
+        const ret = wasm.deltachunker_new();
+        this.__wbg_ptr = ret;
+        DeltaChunkerFinalization.register(this, this.__wbg_ptr, this);
+        return this;
+    }
+    /**
+     * Feed one slice. Returns a JSON array of the chunks that became
+     * final: `[["<blake3-hex>", size], …]` (possibly empty).
+     * @param {Uint8Array} data
+     * @returns {string}
+     */
+    update(data) {
+        let deferred2_0;
+        let deferred2_1;
+        try {
+            const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+            const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export);
+            const len0 = WASM_VECTOR_LEN;
+            wasm.deltachunker_update(retptr, this.__wbg_ptr, ptr0, len0);
+            var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
+            var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
+            deferred2_0 = r0;
+            deferred2_1 = r1;
+            return getStringFromWasm0(r0, r1);
+        } finally {
+            wasm.__wbindgen_add_to_stack_pointer(16);
+            wasm.__wbindgen_export2(deferred2_0, deferred2_1, 1);
+        }
+    }
+}
+if (Symbol.dispose) DeltaChunker.prototype[Symbol.dispose] = DeltaChunker.prototype.free;
+
+/**
+ * One-shot convenience for small buffers.
+ * @param {Uint8Array} data
+ * @returns {string}
+ */
+export function blake3Hex(data) {
+    let deferred2_0;
+    let deferred2_1;
+    try {
+        const retptr = wasm.__wbindgen_add_to_stack_pointer(-16);
+        const ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_export);
+        const len0 = WASM_VECTOR_LEN;
+        wasm.blake3Hex(retptr, ptr0, len0);
+        var r0 = getDataViewMemory0().getInt32(retptr + 4 * 0, true);
+        var r1 = getDataViewMemory0().getInt32(retptr + 4 * 1, true);
+        deferred2_0 = r0;
+        deferred2_1 = r1;
+        return getStringFromWasm0(r0, r1);
+    } finally {
+        wasm.__wbindgen_add_to_stack_pointer(16);
+        wasm.__wbindgen_export2(deferred2_0, deferred2_1, 1);
+    }
+}
+function __wbg_get_imports() {
+    const import0 = {
+        __proto__: null,
+        __wbg___wbindgen_throw_bbadd78c1bac3a77: function(arg0, arg1) {
+            throw new Error(getStringFromWasm0(arg0, arg1));
+        },
+    };
+    return {
+        __proto__: null,
+        "./oxicloud_hash_wasm_bg.js": import0,
+    };
+}
+
+const Blake3HasherFinalization = (typeof FinalizationRegistry === 'undefined')
+    ? { register: () => {}, unregister: () => {} }
+    : new FinalizationRegistry(ptr => wasm.__wbg_blake3hasher_free(ptr, 1));
+const DeltaChunkerFinalization = (typeof FinalizationRegistry === 'undefined')
+    ? { register: () => {}, unregister: () => {} }
+    : new FinalizationRegistry(ptr => wasm.__wbg_deltachunker_free(ptr, 1));
+
+let cachedDataViewMemory0 = null;
+function getDataViewMemory0() {
+    if (cachedDataViewMemory0 === null || cachedDataViewMemory0.buffer.detached === true || (cachedDataViewMemory0.buffer.detached === undefined && cachedDataViewMemory0.buffer !== wasm.memory.buffer)) {
+        cachedDataViewMemory0 = new DataView(wasm.memory.buffer);
+    }
+    return cachedDataViewMemory0;
+}
+
+function getStringFromWasm0(ptr, len) {
+    return decodeText(ptr >>> 0, len);
+}
+
+let cachedUint8ArrayMemory0 = null;
+function getUint8ArrayMemory0() {
+    if (cachedUint8ArrayMemory0 === null || cachedUint8ArrayMemory0.byteLength === 0) {
+        cachedUint8ArrayMemory0 = new Uint8Array(wasm.memory.buffer);
+    }
+    return cachedUint8ArrayMemory0;
+}
+
+function passArray8ToWasm0(arg, malloc) {
+    const ptr = malloc(arg.length * 1, 1) >>> 0;
+    getUint8ArrayMemory0().set(arg, ptr / 1);
+    WASM_VECTOR_LEN = arg.length;
+    return ptr;
+}
+
+let cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+cachedTextDecoder.decode();
+const MAX_SAFARI_DECODE_BYTES = 2146435072;
+let numBytesDecoded = 0;
+function decodeText(ptr, len) {
+    numBytesDecoded += len;
+    if (numBytesDecoded >= MAX_SAFARI_DECODE_BYTES) {
+        cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+        cachedTextDecoder.decode();
+        numBytesDecoded = len;
+    }
+    return cachedTextDecoder.decode(getUint8ArrayMemory0().subarray(ptr, ptr + len));
+}
+
+let WASM_VECTOR_LEN = 0;
+
+let wasmModule, wasmInstance, wasm;
+function __wbg_finalize_init(instance, module) {
+    wasmInstance = instance;
+    wasm = instance.exports;
+    wasmModule = module;
+    cachedDataViewMemory0 = null;
+    cachedUint8ArrayMemory0 = null;
+    return wasm;
+}
+
+async function __wbg_load(module, imports) {
+    if (typeof Response === 'function' && module instanceof Response) {
+        if (typeof WebAssembly.instantiateStreaming === 'function') {
+            try {
+                return await WebAssembly.instantiateStreaming(module, imports);
+            } catch (e) {
+                const validResponse = module.ok && expectedResponseType(module.type);
+
+                if (validResponse && module.headers.get('Content-Type') !== 'application/wasm') {
+                    console.warn("`WebAssembly.instantiateStreaming` failed because your server does not serve Wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
+
+                } else { throw e; }
+            }
+        }
+
+        const bytes = await module.arrayBuffer();
+        return await WebAssembly.instantiate(bytes, imports);
+    } else {
+        const instance = await WebAssembly.instantiate(module, imports);
+
+        if (instance instanceof WebAssembly.Instance) {
+            return { instance, module };
+        } else {
+            return instance;
+        }
+    }
+
+    function expectedResponseType(type) {
+        switch (type) {
+            case 'basic': case 'cors': case 'default': return true;
+        }
+        return false;
+    }
+}
+
+function initSync(module) {
+    if (wasm !== undefined) return wasm;
+
+
+    if (module !== undefined) {
+        if (Object.getPrototypeOf(module) === Object.prototype) {
+            ({module} = module)
+        } else {
+            console.warn('using deprecated parameters for `initSync()`; pass a single object instead')
+        }
+    }
+
+    const imports = __wbg_get_imports();
+    if (!(module instanceof WebAssembly.Module)) {
+        module = new WebAssembly.Module(module);
+    }
+    const instance = new WebAssembly.Instance(module, imports);
+    return __wbg_finalize_init(instance, module);
+}
+
+async function __wbg_init(module_or_path) {
+    if (wasm !== undefined) return wasm;
+
+
+    if (module_or_path !== undefined) {
+        if (Object.getPrototypeOf(module_or_path) === Object.prototype) {
+            ({module_or_path} = module_or_path)
+        } else {
+            console.warn('using deprecated parameters for the initialization function; pass a single object instead')
+        }
+    }
+
+    if (module_or_path === undefined) {
+        module_or_path = new URL('oxicloud_hash_wasm_bg.wasm', import.meta.url);
+    }
+    const imports = __wbg_get_imports();
+
+    if (typeof module_or_path === 'string' || (typeof Request === 'function' && module_or_path instanceof Request) || (typeof URL === 'function' && module_or_path instanceof URL)) {
+        module_or_path = fetch(module_or_path);
+    }
+
+    const { instance, module } = await __wbg_load(await module_or_path, imports);
+
+    return __wbg_finalize_init(instance, module);
+}
+
+export { initSync, __wbg_init as default };