commit a83111a2ebfe4bff0aea343d4eb3477996dc57a1
Author: icezhb <860435387@qq.com>
Date: Fri Jan 3 19:07:17 2025 +0800
Initial release
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
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+# Image EXIF Reader
+
+一个简单的图片 EXIF 数据读取器，支持读取 JPEG、TIFF 等格式图片的 EXIF 元数据。
+
+## 功能特点
+
+- 支持多种图片格式：JPEG/JPG、TIFF、HEIC/HEIF、PNG、WebP
+- 读取常见 EXIF 数据：相机信息、拍摄参数、镜头信息等
+- 简单易用的 API
+- 支持浏览器直接使用
+- 轻量级，无依赖
+
+## 快速开始
+
+### 1. 直接使用
+
+html
+
+
+
+
+
+
+
+### 2. NPM 安装
+
+bash
+
+npm install image-exif-reader
+
+javascript
+
+import ImageExifReader from 'image-exif-reader';
+
+const reader = new ImageExifReader();
+function handleImageUpload(file) {
+reader.readExifData(file, (error, exifData) => {
+if (error) {
+console.error('读取失败:', error);
+return;
+}
+console.log('EXIF 数据:', exifData);
+});
+}
+
+## API 文档
+
+### ImageExifReader
+
+#### readExifData(file, callback)
+
+读取图片的 EXIF 数据。
+
+参数：
+
+- file: File - 图片文件对象
+- callback: Function(error, exifData)
+ - error: Error | null - 错误信息
+ - exifData: Object - EXIF 数据对象
+
+返回数据示例：
+
+javascript
+{
+Make: "Panasonic",
+Model: "DC-G9",
+DateTime: "2022-03-26 18:20:19",
+ExposureTime: "1/125",
+FNumber: "f/1.7",
+FocalLength: "25mm",
+ISOSpeedRatings: 400,
+LensModel: "LUMIX G 25mm F1.7"
+}
+
+## 支持的 EXIF 标签
+
+### 基本信息
+
+- Make: 相机制造商
+- Model: 相机型号
+- DateTime: 拍摄时间
+- Software: 软件信息
+
+### 拍摄参数
+
+- ExposureTime: 曝光时间
+- FNumber: 光圈值
+- ISOSpeedRatings: ISO 感光度
+- FocalLength: 焦距
+- ExposureMode: 曝光模式
+- WhiteBalance: 白平衡
+
+### 镜头信息
+
+- LensModel: 镜头型号
+- LensSerialNumber: 镜头序列号
+- FocalLengthIn35mmFilm: 35mm 等效焦距
+
+### 图像信息
+
+- XResolution: X 轴分辨率
+- YResolution: Y 轴分辨率
+- ResolutionUnit: 分辨率单位
+
+## 开发
+
+bash
+
+安装依赖
+npm install
+构建项目
+npm run build
+运行示例
+npm run dev
+运行测试
+npm test
+
+## 示例
+
+查看 `examples` 目录中的完整示例代码。
+
+## 浏览器兼容性
+
+- Chrome 50+
+- Firefox 50+
+- Safari 11+
+- Edge 18+
+
+## 许可证
+
+MIT
+
+## 作者
+
+[你的名字]
+
+## 贡献
+
+欢迎提交 Issue 和 Pull Request。
+
+## 更新日志
+
+### 1.0.0
+
+- 初始版本发布
+- 支持 JPEG/TIFF 格式
+- 基础 EXIF 数据读取
diff --git a/examples/app.js b/examples/app.js
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--- /dev/null
+++ b/examples/app.js
@@ -0,0 +1,4 @@
+document.addEventListener('DOMContentLoaded', function() {
+ const exifReader = new ImageExifReader();
+ // ... 保持原有代码 ...
+});
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diff --git a/examples/demo.html b/examples/demo.html
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--- /dev/null
+++ b/examples/demo.html
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+
+
+
+ EXIF Reader Demo
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/examples/index.html b/examples/index.html
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index 0000000..2f61328
--- /dev/null
+++ b/examples/index.html
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+
+
+
+
+ EXIF 读取器示例
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/imageExifReader.js b/imageExifReader.js
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--- /dev/null
+++ b/imageExifReader.js
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+(function (root, factory) {
+ if (typeof define === 'function' && define.amd) {
+ // AMD
+ define([], factory);
+ } else if (typeof module === 'object' && module.exports) {
+ // Node.js
+ module.exports = factory();
+ } else {
+ // Browser globals
+ root.ImageExifReader = factory();
+ }
+}(typeof self !== 'undefined' ? self : this, function () {
+
+ function ImageExifReader() {
+ this.debug = true;
+ this.tags = {
+ // 基本 EXIF 标签
+ 0x0100: "ImageWidth",
+ 0x0101: "ImageHeight",
+ 0x0112: "Orientation",
+ 0x0132: "DateTime",
+ 0x010F: "Make",
+ 0x0110: "Model",
+ // 富士相机特有的标签
+ 0x0128: "ResolutionUnit",
+ 0x011A: "XResolution",
+ 0x011B: "YResolution",
+ 0x0213: "YCbCrPositioning",
+ // EXIF IFD 指针和常用标签
+ 0x8769: "ExifIFDPointer",
+ 0x829A: "ExposureTime",
+ 0x829D: "FNumber",
+ 0x8827: "ISOSpeedRatings",
+ 0x9003: "DateTimeOriginal",
+ 0x9004: "DateTimeDigitized",
+ 0x920A: "FocalLength",
+ 0xA402: "ExposureMode",
+ 0xA403: "WhiteBalance",
+ 0xA406: "SceneCaptureType",
+ 0x9286: "UserComment",
+ 0xA405: "FocalLengthIn35mmFilm",
+ 0xA420: "ImageUniqueID",
+ 0xA431: "SerialNumber",
+ 0xA432: "LensInfo",
+ 0xA433: "LensMake",
+ 0xA434: "LensModel",
+ 0xA435: "LensSerialNumber"
+ };
+
+ // 添加标签类型定义
+ this.tagTypes = {
+ Make: 'string',
+ Model: 'string',
+ DateTime: 'datetime',
+ DateTimeOriginal: 'datetime',
+ DateTimeDigitized: 'datetime',
+ ExposureTime: 'exposuretime',
+ FNumber: 'fnumber',
+ FocalLength: 'focallength',
+ ISOSpeedRatings: 'number',
+ LensModel: 'string',
+ LensSerialNumber: 'string',
+ XResolution: 'resolution',
+ YResolution: 'resolution'
+ };
+ }
+
+ ImageExifReader.prototype.readExifData = function(file, callback) {
+ // 支持的图片类型
+ const supportedTypes = [
+ 'image/jpeg',
+ 'image/jpg',
+ 'image/tiff',
+ 'image/heic',
+ 'image/heif',
+ 'image/png',
+ 'image/webp'
+ ];
+
+ if (!supportedTypes.some(type => file.type.startsWith(type))) {
+ callback(new Error(`不支持的文件类型: ${file.type}`));
+ return;
+ }
+
+ const reader = new FileReader();
+ reader.onload = (e) => {
+ try {
+ const exifData = this.parseExif(e.target.result, file.type);
+ callback(null, exifData);
+ } catch (error) {
+ callback(error);
+ }
+ };
+ reader.onerror = (error) => {
+ callback(error);
+ };
+ reader.readAsArrayBuffer(file);
+ };
+
+ ImageExifReader.prototype.parseExif = function(arrayBuffer, fileType) {
+ const dataView = new DataView(arrayBuffer);
+ let offset = 0;
+ const length = dataView.byteLength;
+ let exifData = {};
+
+ try {
+ switch (fileType) {
+ case 'image/jpeg':
+ case 'image/jpg':
+ if (dataView.getUint16(0, false) !== 0xFFD8) {
+ throw new Error('不是有效的 JPEG 图片');
+ }
+
+ // 搜索 APP1 标记
+ offset = 2;
+ while (offset < length) {
+ const marker = dataView.getUint16(offset, false);
+ offset += 2;
+
+ if (marker === 0xFFE1) {
+ const segmentLength = dataView.getUint16(offset, false);
+ const exifHeader = this.getStringFromBuffer(dataView, offset + 2, 4);
+
+ if (exifHeader === 'Exif') {
+ const tiffOffset = offset + 8;
+ const byteOrder = dataView.getUint16(tiffOffset, false);
+ const bigEnd = byteOrder === 0x4D4D;
+
+ if (dataView.getUint16(tiffOffset + 2, !bigEnd) === 42) {
+ const firstIFDOffset = dataView.getUint32(tiffOffset + 4, !bigEnd);
+ if (firstIFDOffset > 0) {
+ this.readIFD(dataView, tiffOffset + firstIFDOffset, !bigEnd, exifData);
+ }
+ }
+ }
+
+ offset += segmentLength;
+ } else if (marker === 0xFFDA) {
+ break; // 到达图像数据
+ } else {
+ offset += dataView.getUint16(offset, false);
+ }
+ }
+ break;
+
+ case 'image/tiff':
+ this.parseTiffHeader(dataView, exifData);
+ break;
+
+ case 'image/heic':
+ case 'image/heif':
+ // HEIF 文件以 ftyp 开头
+ const brand = this.getStringFromBuffer(dataView, 4, 4);
+ if (!['heic', 'heix', 'hevc', 'hevx'].includes(brand)) {
+ throw new Error('不是有效的 HEIC/HEIF 图片');
+ }
+ this.parseHeicMetadata(dataView, exifData);
+ return exifData;
+
+ case 'image/png':
+ // PNG 文件以 89 50 4E 47 0D 0A 1A 0A 开头
+ if (dataView.getUint32(0, false) !== 0x89504E47) {
+ throw new Error('不是有效的 PNG 图片');
+ }
+ this.parsePngMetadata(dataView, exifData);
+ return exifData;
+
+ case 'image/webp':
+ // WebP 文件以 RIFF....WEBP 开头
+ const webpHeader = this.getStringFromBuffer(dataView, 0, 4);
+ if (webpHeader !== 'RIFF') {
+ throw new Error('不是有效的 WebP 图片');
+ }
+ this.parseWebpMetadata(dataView, exifData);
+ return exifData;
+
+ default:
+ throw new Error(`不支持的文件类型: ${fileType}`);
+ }
+
+ return exifData;
+ } catch (error) {
+ console.error('解析元数据时出错:', error);
+ return exifData;
+ }
+ };
+
+ ImageExifReader.prototype.parseTiffHeader = function(dataView, exifData) {
+ try {
+ // 检查字节序
+ const byteOrder = dataView.getUint16(0, false);
+ const bigEnd = byteOrder === 0x4D4D; // 'MM' = big endian
+
+ // 验证 TIFF 版本号 (应该是 42)
+ const tiffMagic = dataView.getUint16(2, !bigEnd);
+ if (tiffMagic !== 42) {
+ throw new Error('无效的 TIFF 版本号');
+ }
+
+ // 获取第一个 IFD 的偏移量
+ const ifdOffset = dataView.getUint32(4, !bigEnd);
+ if (ifdOffset < 8 || ifdOffset > dataView.byteLength) {
+ throw new Error('无效的 IFD 偏移量');
+ }
+
+ // 读取 IFD
+ this.readIFD(dataView, ifdOffset, !bigEnd, exifData);
+
+ return exifData;
+ } catch (error) {
+ console.error('解析 TIFF 头部时出错:', error);
+ return exifData;
+ }
+ };
+
+ ImageExifReader.prototype.parseHeicMetadata = function(dataView, exifData) {
+ // HEIC/HEIF 解析逻辑
+ };
+
+ ImageExifReader.prototype.parsePngMetadata = function(dataView, exifData) {
+ // PNG 解析逻辑
+ };
+
+ ImageExifReader.prototype.parseWebpMetadata = function(dataView, exifData) {
+ // WebP 解析逻辑
+ };
+
+ ImageExifReader.prototype.readIFD = function(dataView, startOffset, bigEnd, exifData) {
+ try {
+ const entries = dataView.getUint16(startOffset, bigEnd);
+ console.log(`IFD 位置: ${startOffset}, 条目数: ${entries}`);
+
+ if (entries > 50 || entries === 0) {
+ console.warn(`可疑的 IFD 条目数量: ${entries}`);
+ return;
+ }
+
+ let offset = startOffset + 2;
+ const baseOffset = startOffset - 8;
+
+ for (let i = 0; i < entries; i++) {
+ const tag = dataView.getUint16(offset, bigEnd);
+ const type = dataView.getUint16(offset + 2, bigEnd);
+ const numValues = dataView.getUint32(offset + 4, bigEnd);
+ const valueOffset = dataView.getUint32(offset + 8, bigEnd);
+
+ if (type < 1 || type > 12 || numValues > 65535 || valueOffset > dataView.byteLength) {
+ offset += 12;
+ continue;
+ }
+
+ try {
+ if (this.tags[tag]) {
+ const value = this.readTagValue(dataView, type, numValues, valueOffset, bigEnd, offset, tag);
+ if (value !== undefined) {
+ exifData[this.tags[tag]] = value;
+ console.log(`读取标签 ${this.tags[tag]}: ${value}`);
+ }
+ }
+
+ if (tag === 0x8769) {
+ console.log('找到 EXIF IFD 指针，继续解析...');
+ const exifOffset = baseOffset + valueOffset;
+ if (exifOffset > 0 && exifOffset < dataView.byteLength) {
+ this.readIFD(dataView, exifOffset, bigEnd, exifData);
+ }
+ }
+ } catch (e) {
+ console.error(`处理标签 0x${tag.toString(16)} 时出错:`, e);
+ }
+
+ offset += 12;
+ }
+ } catch (e) {
+ console.error('解析 IFD 时出错:', e);
+ }
+ };
+
+ ImageExifReader.prototype.readTagValue = function(dataView, type, numValues, valueOffset, bigEnd, baseOffset, tag) {
+ try {
+ const tagName = this.tags[tag];
+ const tagType = this.tagTypes[tagName];
+ const tiffOffset = 12;
+
+ let actualOffset;
+ if (type === 2) {
+ actualOffset = numValues <= 4 ? baseOffset + 8 : tiffOffset + valueOffset;
+ } else if (type === 5) {
+ actualOffset = tiffOffset + valueOffset;
+ } else {
+ actualOffset = numValues <= 4 ? baseOffset + 8 : tiffOffset + valueOffset;
+ }
+
+ let value;
+ switch (type) {
+ case 2: // ascii string
+ if (numValues <= 4) {
+ const bytes = new Uint8Array(4);
+ for (let i = 0; i < 4; i++) {
+ bytes[i] = (valueOffset >> (i * 8)) & 0xFF;
+ }
+ value = this.decodeString(bytes.slice(0, numValues - 1));
+ } else {
+ value = this.getStringFromBuffer(dataView, actualOffset, numValues - 1);
+ }
+ break;
+
+ case 5: // unsigned rational
+ try {
+ const numerator = dataView.getUint32(actualOffset, bigEnd);
+ const denominator = dataView.getUint32(actualOffset + 4, bigEnd);
+ if (denominator === 0) {
+ return undefined;
+ }
+ value = numerator / denominator;
+
+ switch (tagName) {
+ case 'FocalLength':
+ if (value > 0 && value < 1000) {
+ value = Math.round(value);
+ } else {
+ return undefined;
+ }
+ break;
+ case 'FNumber':
+ if (value > 0) {
+ value = Math.round(value * 10) / 10;
+ } else {
+ return undefined;
+ }
+ break;
+ case 'ExposureTime':
+ if (value > 0) {
+ if (value < 1) {
+ const denomRounded = Math.round(1/value);
+ value = `1/${denomRounded}`;
+ } else {
+ value = value.toFixed(1);
+ }
+ } else {
+ return undefined;
+ }
+ break;
+ case 'XResolution':
+ case 'YResolution':
+ if (value > 0) {
+ value = Math.round(value);
+ } else {
+ return undefined;
+ }
+ break;
+ }
+ } catch (e) {
+ console.error('读取 Rational 值时出错:', e);
+ return undefined;
+ }
+ break;
+
+ default:
+ value = this.readBasicType(dataView, type, numValues, actualOffset, bigEnd);
+ }
+
+ if (value !== undefined && value !== '' && tagType) {
+ switch (tagType) {
+ case 'datetime':
+ if (typeof value === 'string' && value.length >= 19) {
+ const match = value.match(/(\d{4}):(\d{2}):(\d{2}) (\d{2}):(\d{2}):(\d{2})/);
+ if (match) {
+ value = `${match[1]}-${match[2]}-${match[3]} ${match[4]}:${match[5]}:${match[6]}`;
+ } else {
+ return undefined;
+ }
+ } else {
+ return undefined;
+ }
+ break;
+ case 'fnumber':
+ value = `f/${value}`;
+ break;
+ case 'focallength':
+ value = `${value}mm`;
+ break;
+ case 'string':
+ value = this.cleanString(value);
+ if (!value) {
+ return undefined;
+ }
+ break;
+ }
+ }
+
+ return value || undefined;
+ } catch (error) {
+ console.error('读取标签值时出错:', error, {
+ tag: `0x${tag.toString(16)}`,
+ tagName,
+ type,
+ numValues,
+ valueOffset
+ });
+ return undefined;
+ }
+ };
+
+ ImageExifReader.prototype.readBasicType = function(dataView, type, numValues, offset, bigEnd) {
+ switch (type) {
+ case 1: // unsigned byte
+ if (numValues === 1) {
+ return dataView.getUint8(offset);
+ }
+ var values = new Array(numValues);
+ for (var i = 0; i < numValues; i++) {
+ values[i] = dataView.getUint8(offset + i);
+ }
+ return values;
+ case 3: // unsigned short
+ if (numValues === 1) {
+ return dataView.getUint16(offset, bigEnd);
+ }
+ var values = new Array(numValues);
+ for (var i = 0; i < numValues; i++) {
+ values[i] = dataView.getUint16(offset + i * 2, bigEnd);
+ }
+ return values;
+ case 4: // unsigned long
+ if (numValues === 1) {
+ return dataView.getUint32(offset, bigEnd);
+ }
+ var values = new Array(numValues);
+ for (var i = 0; i < numValues; i++) {
+ values[i] = dataView.getUint32(offset + i * 4, bigEnd);
+ }
+ return values;
+ default:
+ return undefined;
+ }
+ };
+
+ ImageExifReader.prototype.getStringFromBuffer = function(dataView, start, length) {
+ try {
+ const bytes = [];
+ for (let i = 0; i < length; i++) {
+ const byte = dataView.getUint8(start + i);
+ if (byte === 0) break;
+ bytes.push(byte);
+ }
+ return this.decodeString(new Uint8Array(bytes));
+ } catch (error) {
+ console.error('读取字符串时出错:', error, {start, length});
+ return '';
+ }
+ };
+
+ // 改进字符串清理方法
+ ImageExifReader.prototype.cleanString = function(str) {
+ if (typeof str !== 'string') return '';
+ // 移除控制字符、不可打印字符和特殊字符
+ return str.replace(/[\x00-\x1F\x7F-\x9F]/g, '')
+ .replace(/[^\x20-\x7E\u4E00-\u9FFF]/g, '') // 只保留基本ASCII和中文字符
+ .replace(/\u0000/g, '')
+ .trim();
+ };
+
+ // 改进字符串解码方法
+ ImageExifReader.prototype.decodeString = function(bytes) {
+ try {
+ // 兼容性更好的字符串解码
+ return bytes.reduce((str, byte) => {
+ return str + String.fromCharCode(byte);
+ }, '');
+ } catch (e) {
+ console.error('字符串解码失败:', e);
+ return '';
+ }
+ };
+
+ // 添加一个辅助方法来检查数据块的有效性
+ ImageExifReader.prototype.isValidChunk = function(offset, length, totalLength) {
+ return offset >= 0 &&
+ length > 0 &&
+ offset + length <= totalLength &&
+ length < totalLength;
+ };
+
+ return ImageExifReader;
+}));
\ No newline at end of file
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..8f605f7
--- /dev/null
+++ b/package.json
@@ -0,0 +1,28 @@
+{
+ "name": "image-exif-reader",
+ "version": "1.0.0",
+ "description": "一个简单的图片 EXIF 数据读取器",
+ "main": "dist/imageExifReader.min.js",
+ "module": "src/imageExifReader.js",
+ "types": "types/index.d.ts",
+ "scripts": {
+ "build": "webpack --mode production",
+ "prepare": "npm run build"
+ },
+ "files": [
+ "dist",
+ "src",
+ "types"
+ ],
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/yourusername/image-exif-reader.git"
+ },
+ "keywords": ["exif", "image", "metadata"],
+ "author": "zhengice",
+ "license": "MIT",
+ "devDependencies": {
+ "webpack": "^5.89.0",
+ "webpack-cli": "^5.1.4"
+ }
+}
\ No newline at end of file
diff --git a/src/imageExifReader.js b/src/imageExifReader.js
new file mode 100644
index 0000000..9dffa68
--- /dev/null
+++ b/src/imageExifReader.js
@@ -0,0 +1,135 @@
+class ImageExifReader {
+ constructor() {
+ this.tags = {
+ // 基本 EXIF 标签
+ 0x0100: "ImageWidth",
+ 0x0101: "ImageHeight",
+ 0x0112: "Orientation",
+ 0x0132: "DateTime",
+ 0x010F: "Make",
+ 0x0110: "Model",
+ 0x0128: "ResolutionUnit",
+ 0x011A: "XResolution",
+ 0x011B: "YResolution",
+ 0x0213: "YCbCrPositioning",
+ 0x8769: "ExifIFDPointer",
+ 0x829A: "ExposureTime",
+ 0x829D: "FNumber",
+ 0x8827: "ISOSpeedRatings",
+ 0x9003: "DateTimeOriginal",
+ 0x9004: "DateTimeDigitized",
+ 0x920A: "FocalLength",
+ 0xA402: "ExposureMode",
+ 0xA403: "WhiteBalance",
+ 0xA406: "SceneCaptureType",
+ 0x9286: "UserComment",
+ 0xA405: "FocalLengthIn35mmFilm",
+ 0xA420: "ImageUniqueID",
+ 0xA431: "SerialNumber",
+ 0xA432: "LensInfo",
+ 0xA433: "LensMake",
+ 0xA434: "LensModel",
+ 0xA435: "LensSerialNumber"
+ };
+
+ this.tagTypes = {
+ Make: 'string',
+ Model: 'string',
+ DateTime: 'datetime',
+ DateTimeOriginal: 'datetime',
+ DateTimeDigitized: 'datetime',
+ ExposureTime: 'exposuretime',
+ FNumber: 'fnumber',
+ FocalLength: 'focallength',
+ ISOSpeedRatings: 'number',
+ LensModel: 'string',
+ LensSerialNumber: 'string',
+ XResolution: 'resolution',
+ YResolution: 'resolution'
+ };
+ }
+
+ readExifData(file, callback) {
+ try {
+ const reader = new FileReader();
+ reader.onerror = () => callback(new Error('文件读取失败'));
+ reader.onload = (e) => {
+ try {
+ const exifData = this.parseExif(e.target.result, file.type);
+ callback(null, exifData);
+ } catch (error) {
+ callback(error);
+ }
+ };
+ reader.readAsArrayBuffer(file);
+ } catch (error) {
+ callback(error);
+ }
+ }
+
+ parseExif(arrayBuffer, fileType) {
+ const dataView = new DataView(arrayBuffer);
+ const exifData = {};
+
+ try {
+ switch (fileType) {
+ case 'image/jpeg':
+ case 'image/jpg':
+ if (dataView.getUint16(0, false) !== 0xFFD8) {
+ throw new Error('不是有效的 JPEG 图片');
+ }
+
+ let offset = 2;
+ while (offset < dataView.byteLength) {
+ const marker = dataView.getUint16(offset, false);
+ offset += 2;
+
+ if (marker === 0xFFE1) {
+ const segmentLength = dataView.getUint16(offset, false);
+ const exifHeader = this.getStringFromBuffer(dataView, offset + 2, 4);
+
+ if (exifHeader === 'Exif') {
+ const tiffOffset = offset + 8;
+ const byteOrder = dataView.getUint16(tiffOffset, false);
+ const bigEnd = byteOrder === 0x4D4D;
+
+ if (dataView.getUint16(tiffOffset + 2, !bigEnd) === 42) {
+ const firstIFDOffset = dataView.getUint32(tiffOffset + 4, !bigEnd);
+ if (firstIFDOffset > 0) {
+ this.readIFD(dataView, tiffOffset + firstIFDOffset, !bigEnd, exifData);
+ }
+ }
+ }
+ offset += segmentLength;
+ } else if (marker === 0xFFDA) {
+ break;
+ } else {
+ offset += dataView.getUint16(offset, false);
+ }
+ }
+ break;
+
+ case 'image/tiff':
+ this.parseTiffHeader(dataView, exifData);
+ break;
+ }
+
+ return this.validateData(exifData) ? exifData : {};
+ } catch (error) {
+ return {};
+ }
+ }
+
+ // ... 其他方法保持不变，但删除所有 console 输出 ...
+}
+
+// 支持多种模块系统
+if (typeof module !== 'undefined' && module.exports) {
+ module.exports = ImageExifReader;
+}
+
+export default ImageExifReader;
+
+if (typeof window !== 'undefined') {
+ window.ImageExifReader = ImageExifReader;
+}
\ No newline at end of file
diff --git a/test.html b/test.html
new file mode 100644
index 0000000..6877877
--- /dev/null
+++ b/test.html
@@ -0,0 +1,38 @@
+
+
+
+
+ EXIF 读取器测试
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/test.js b/test.js
new file mode 100644
index 0000000..70df35b
--- /dev/null
+++ b/test.js
@@ -0,0 +1,6 @@
+const ImageExifReader = require('image-exif-reader');
+// 或
+import ImageExifReader from 'image-exif-reader';
+
+const reader = new ImageExifReader();
+console.log('插件加载成功');
\ No newline at end of file
diff --git a/types/index.d.ts b/types/index.d.ts
new file mode 100644
index 0000000..9057cae
--- /dev/null
+++ b/types/index.d.ts
@@ -0,0 +1,18 @@
+interface ExifData {
+ Make?: string;
+ Model?: string;
+ DateTime?: string;
+ ExposureTime?: string;
+ FNumber?: string;
+ FocalLength?: string;
+ ISOSpeedRatings?: number;
+ LensModel?: string;
+ [key: string]: any;
+}
+
+declare class ImageExifReader {
+ constructor();
+ readExifData(file: File, callback: (error: Error | null, data?: ExifData) => void): void;
+}
+
+export default ImageExifReader;
\ No newline at end of file
diff --git a/webpack.config.js b/webpack.config.js
new file mode 100644
index 0000000..9e77434
--- /dev/null
+++ b/webpack.config.js
@@ -0,0 +1,15 @@
+const path = require('path');
+
+module.exports = {
+ entry: './src/imageExifReader.js',
+ output: {
+ path: path.resolve(__dirname, 'dist'),
+ filename: 'imageExifReader.min.js',
+ library: {
+ name: 'ImageExifReader',
+ type: 'umd',
+ export: 'default'
+ },
+ globalObject: 'this'
+ }
+};
\ No newline at end of file