56 lines
2.0 KiB
JavaScript
56 lines
2.0 KiB
JavaScript
import { Image, Platform } from 'react-native';
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import RNFS from 'react-native-fs';
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import { ensurePngFile, toPngFileName } from './pngImage';
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/** 将 require() 资源解析为 PNG 本地路径（OpenCV / RNFS 可读） */
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export async function resolveAssetPath(assetModule, cacheFileName) {
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const pngCacheName = toPngFileName(cacheFileName);
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const source = Image.resolveAssetSource(assetModule);
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if (!source?.uri) {
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throw new Error('Cannot resolve image resource');
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}
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const { uri } = source;
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if (uri.startsWith('file://')) {
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return ensurePngFile(uri, pngCacheName);
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}
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if (Platform.OS === 'ios' && uri.startsWith('/')) {
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return ensurePngFile(uri, pngCacheName);
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}
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if (Platform.OS === 'ios' && uri.startsWith('/')) {
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return ensurePngFile(uri, pngCacheName);
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}
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if (uri.startsWith('http://') || uri.startsWith('https://')) {
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const tmpDest = `${RNFS.CachesDirectoryPath}/tmp_${Date.now()}_${pngCacheName}`;
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const { statusCode } = await RNFS.downloadFile({
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fromUrl: uri,
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toFile: tmpDest,
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}).promise;
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if (statusCode !== 200) {
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throw new Error(`Download resource failed: ${pngCacheName}`);
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}
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try {
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return await ensurePngFile(tmpDest, pngCacheName);
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}
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finally {
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if (await RNFS.exists(tmpDest)) {
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await RNFS.unlink(tmpDest);
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}
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}
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}
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if (Platform.OS === 'android') {
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const assetPath = uri
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.replace('asset:/', '')
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.replace('file:///android_asset/', '');
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const tmpDest = `${RNFS.CachesDirectoryPath}/tmp_${Date.now()}_${pngCacheName}`;
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await RNFS.copyFileAssets(assetPath, tmpDest);
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try {
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return await ensurePngFile(tmpDest, pngCacheName);
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}
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finally {
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if (await RNFS.exists(tmpDest)) {
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await RNFS.unlink(tmpDest);
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}
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}
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}
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return ensurePngFile(uri, pngCacheName);
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}
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//# sourceMappingURL=resolveAssetPath.js.map
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