98 lines
3.7 KiB
Plaintext
98 lines
3.7 KiB
Plaintext
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
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const require_utils_buffer = require("./buffer.js");
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//#region src/utils/body.ts
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const MAX_NESTED_OBJECTS = 1e4;
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const isRawRequest = (request) => "headers" in request;
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const parseBody = async (request, options = Object.create(null)) => {
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const { all = false, dot = false } = options;
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const mediaType = (isRawRequest(request) ? request.headers : request.raw.headers).get("Content-Type")?.split(";")[0].trim().toLowerCase();
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if (mediaType === "multipart/form-data" || mediaType === "application/x-www-form-urlencoded") return parseFormData(request, {
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all,
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dot
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});
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return {};
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};
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/**
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* Parses form data from a request.
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*
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* @template T - The type of the parsed body data.
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* @param {HonoRequest | Request} request - The request object containing form data.
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* @param {ParseBodyOptions} options - Options for parsing the form data.
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* @returns {Promise<T>} The parsed body data.
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*/
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async function parseFormData(request, options) {
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if (!isRawRequest(request) && request.bodyCache.formData) return convertFormDataToBodyData(await request.bodyCache.formData, options);
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const headers = isRawRequest(request) ? request.headers : request.raw.headers;
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const arrayBuffer = await request.arrayBuffer();
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const formDataPromise = require_utils_buffer.bufferToFormData(arrayBuffer, headers.get("Content-Type") || "");
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if (!isRawRequest(request)) request.bodyCache.formData = formDataPromise;
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const formData = await formDataPromise;
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if (formData) return convertFormDataToBodyData(formData, options);
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return {};
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}
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/**
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* Converts form data to body data based on the provided options.
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*
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* @template T - The type of the parsed body data.
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* @param {FormData} formData - The form data to convert.
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* @param {ParseBodyOptions} options - Options for parsing the form data.
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* @returns {T} The converted body data.
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*/
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function convertFormDataToBodyData(formData, options) {
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const form = Object.create(null);
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const nestingState = { count: 0 };
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formData.forEach((value, key) => {
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if (!(options.all || key.endsWith("[]"))) form[key] = value;
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else handleParsingAllValues(form, key, value);
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});
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if (options.dot) Object.entries(form).forEach(([key, value]) => {
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if (key.includes(".")) {
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handleParsingNestedValues(form, key, value, nestingState);
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delete form[key];
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}
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});
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return form;
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}
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/**
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* Handles parsing all values for a given key, supporting multiple values as arrays.
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*
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* @param {BodyData} form - The form data object.
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* @param {string} key - The key to parse.
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* @param {FormDataEntryValue} value - The value to assign.
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*/
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const handleParsingAllValues = (form, key, value) => {
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if (form[key] !== void 0) {
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if (Array.isArray(form[key])) form[key].push(value);
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else form[key] = [form[key], value];
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} else if (!key.endsWith("[]")) form[key] = value;
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else form[key] = [value];
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};
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/**
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* Handles parsing nested values using dot notation keys.
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*
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* @param {BodyData} form - The form data object.
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* @param {string} key - The dot notation key.
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* @param {BodyDataValue} value - The value to assign.
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*/
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const handleParsingNestedValues = (form, key, value, state) => {
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if (/(?:^|\.)__proto__\./.test(key)) return;
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let nestedForm = form;
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const keys = key.split(".", 34);
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if (keys.length > 33) throwNestingLimitExceeded();
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keys.forEach((key, index) => {
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if (index === keys.length - 1) nestedForm[key] = value;
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else {
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if (!nestedForm[key] || typeof nestedForm[key] !== "object" || Array.isArray(nestedForm[key]) || nestedForm[key] instanceof File) {
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if (state.count++ >= MAX_NESTED_OBJECTS) throwNestingLimitExceeded();
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nestedForm[key] = Object.create(null);
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}
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nestedForm = nestedForm[key];
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}
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});
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};
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const throwNestingLimitExceeded = () => {
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throw new Error("Nesting limit exceeded");
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};
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//#endregion
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exports.parseBody = parseBody;
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