dtamind-components
Version:
Apps integration for Dtamind. Contain Nodes and Credentials.
228 lines • 8.96 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const lodash_1 = require("lodash");
const pdf_1 = require("@langchain/community/document_loaders/fs/pdf");
const src_1 = require("../../../src");
class Pdf_DocumentLoaders {
constructor() {
this.label = 'Pdf File';
this.name = 'pdfFile';
this.version = 2.0;
this.type = 'Document';
this.icon = 'pdf.svg';
this.category = 'Document Loaders';
this.description = `Load data from PDF files`;
this.baseClasses = [this.type];
this.inputs = [
{
label: 'Pdf File',
name: 'pdfFile',
type: 'file',
fileType: '.pdf'
},
{
label: 'Text Splitter',
name: 'textSplitter',
type: 'TextSplitter',
optional: true
},
{
label: 'Usage',
name: 'usage',
type: 'options',
options: [
{
label: 'One document per page',
name: 'perPage'
},
{
label: 'One document per file',
name: 'perFile'
}
],
default: 'perPage'
},
{
label: 'Use Legacy Build',
name: 'legacyBuild',
type: 'boolean',
optional: true,
additionalParams: true
},
{
label: 'Additional Metadata',
name: 'metadata',
type: 'json',
description: 'Additional metadata to be added to the extracted documents',
optional: true,
additionalParams: true
},
{
label: 'Omit Metadata Keys',
name: 'omitMetadataKeys',
type: 'string',
rows: 4,
description: 'Each document loader comes with a default set of metadata keys that are extracted from the document. You can use this field to omit some of the default metadata keys. The value should be a list of keys, seperated by comma. Use * to omit all metadata keys execept the ones you specify in the Additional Metadata field',
placeholder: 'key1, key2, key3.nestedKey1',
optional: true,
additionalParams: true
}
];
this.outputs = [
{
label: 'Document',
name: 'document',
description: 'Array of document objects containing metadata and pageContent',
baseClasses: [...this.baseClasses, 'json']
},
{
label: 'Text',
name: 'text',
description: 'Concatenated string from pageContent of documents',
baseClasses: ['string', 'json']
}
];
}
async init(nodeData, _, options) {
const textSplitter = nodeData.inputs?.textSplitter;
const pdfFileBase64 = nodeData.inputs?.pdfFile;
const usage = nodeData.inputs?.usage;
const metadata = nodeData.inputs?.metadata;
const legacyBuild = nodeData.inputs?.legacyBuild;
const _omitMetadataKeys = nodeData.inputs?.omitMetadataKeys;
const output = nodeData.outputs?.output;
let omitMetadataKeys = [];
if (_omitMetadataKeys) {
omitMetadataKeys = _omitMetadataKeys.split(',').map((key) => key.trim());
}
let docs = [];
let files = [];
//FILE-STORAGE::["CONTRIBUTING.md","LICENSE.md","README.md"]
if (pdfFileBase64.startsWith('FILE-STORAGE::')) {
const fileName = pdfFileBase64.replace('FILE-STORAGE::', '');
if (fileName.startsWith('[') && fileName.endsWith(']')) {
files = JSON.parse(fileName);
}
else {
files = [fileName];
}
const orgId = options.orgId;
const chatflowid = options.chatflowid;
for (const file of files) {
if (!file)
continue;
const fileData = await (0, src_1.getFileFromStorage)(file, orgId, chatflowid);
const bf = Buffer.from(fileData);
await this.extractDocs(usage, bf, legacyBuild, textSplitter, docs);
}
}
else {
if (pdfFileBase64.startsWith('[') && pdfFileBase64.endsWith(']')) {
files = JSON.parse(pdfFileBase64);
}
else {
files = [pdfFileBase64];
}
for (const file of files) {
if (!file)
continue;
const splitDataURI = file.split(',');
splitDataURI.pop();
const bf = Buffer.from(splitDataURI.pop() || '', 'base64');
await this.extractDocs(usage, bf, legacyBuild, textSplitter, docs);
}
}
if (metadata) {
const parsedMetadata = typeof metadata === 'object' ? metadata : JSON.parse(metadata);
docs = docs.map((doc) => ({
...doc,
metadata: _omitMetadataKeys === '*'
? {
...parsedMetadata
}
: (0, lodash_1.omit)({
...doc.metadata,
...parsedMetadata
}, omitMetadataKeys)
}));
}
else {
docs = docs.map((doc) => ({
...doc,
metadata: _omitMetadataKeys === '*'
? {}
: (0, lodash_1.omit)({
...doc.metadata
}, omitMetadataKeys)
}));
}
if (output === 'document') {
return docs;
}
else {
let finaltext = '';
for (const doc of docs) {
finaltext += `${doc.pageContent}\n`;
}
return (0, src_1.handleEscapeCharacters)(finaltext, false);
}
}
async extractDocs(usage, bf, legacyBuild, textSplitter, docs) {
if (usage === 'perFile') {
const loader = new pdf_1.PDFLoader(new Blob([bf]), {
splitPages: false,
pdfjs: () =>
// @ts-ignore
legacyBuild ? Promise.resolve().then(() => __importStar(require('pdfjs-dist/legacy/build/pdf.js'))) : Promise.resolve().then(() => __importStar(require('pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js')))
});
if (textSplitter) {
let splittedDocs = await loader.load();
splittedDocs = await textSplitter.splitDocuments(splittedDocs);
docs.push(...splittedDocs);
}
else {
docs.push(...(await loader.load()));
}
}
else {
const loader = new pdf_1.PDFLoader(new Blob([bf]), {
pdfjs: () =>
// @ts-ignore
legacyBuild ? Promise.resolve().then(() => __importStar(require('pdfjs-dist/legacy/build/pdf.js'))) : Promise.resolve().then(() => __importStar(require('pdf-parse/lib/pdf.js/v1.10.100/build/pdf.js')))
});
if (textSplitter) {
let splittedDocs = await loader.load();
splittedDocs = await textSplitter.splitDocuments(splittedDocs);
docs.push(...splittedDocs);
}
else {
docs.push(...(await loader.load()));
}
}
}
}
module.exports = { nodeClass: Pdf_DocumentLoaders };
//# sourceMappingURL=Pdf.js.map