exiftool-vendored
Version:
Efficient, cross-platform access to ExifTool
62 lines • 2.38 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.BinaryToBufferTask = void 0;
const node_path_1 = __importDefault(require("node:path"));
const ExifToolTask_1 = require("./ExifToolTask");
const FilenameCharsetArgs_1 = require("./FilenameCharsetArgs");
const String_1 = require("./String");
/**
* Task that returns an error string (to prevent retries), or undefined if
* everything seems to have worked.
*/
class BinaryToBufferTask extends ExifToolTask_1.ExifToolTask {
tagname;
constructor(tagname, args, options) {
super(args, options);
this.tagname = tagname;
}
static for(tagname, imgSrc, options) {
// NOTE TO FUTURE ME: we don't need to escape these arguments, because
// ExifTool separates them via newlines.
const args = [...FilenameCharsetArgs_1.Utf8FilenameCharsetArgs, "-json", "-b", "-" + tagname];
args.push(node_path_1.default.resolve(imgSrc));
return new BinaryToBufferTask(tagname, args, options);
}
parse(data, err) {
try {
const obj = JSON.parse(data)?.[0];
// did they get the casing right?
{
const result = decode(obj[this.tagname]);
if (result != null)
return result;
} // hmm, incorrect casing. Check the other keys.
for (const k of Object.keys(obj)) {
if (k.toLowerCase() === this.tagname.toLowerCase()) {
const result = decode(obj[k]);
if (result != null)
return result;
}
}
}
catch (caught) {
err ??= (0, String_1.notBlank)(data)
? new Error(data)
: caught instanceof Error
? caught
: new Error(String(caught));
}
return err ?? new Error(this.tagname + " not found");
}
}
exports.BinaryToBufferTask = BinaryToBufferTask;
const B64Prefix = "base64:";
function decode(data) {
return !data?.startsWith(B64Prefix)
? undefined
: Buffer.from(data.substring(B64Prefix.length), "base64");
}
//# sourceMappingURL=BinaryToBufferTask.js.map