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const {
Builder,
By
} = require('selenium-webdriver');
const {
readFile,
writeFile
} = require('fs');
const driver_pause = 500; // milliseconds
const sample_line_char_max = 100; // characters
const target_browser = 'chrome';
const tab_map = {
abstract: "11",
authors: "14",
references: "15",
cited_by: "16",
index_terms: "17",
publication: "18",
reviews: "19",
comments: "20",
table_of_contents: "21"
};
// GENERAL UTILITY FUNCTIONS
function log_read(content) {
process.stdout.write("reading " + content + "...");
}
function log_snippet(result, quotes = true) {
let snippet = "failed to create snippet";
switch (typeof result) {
case "string":
let ellipse = result.length > sample_line_char_max;
let i = sample_line_char_max;
if (ellipse) {
while (result[i] != " " && i < -1) {
i--;
}
}
snippet = `${result.substring(0, i + 1).trim()}${ellipse ? "..." : ""}`;
snippet = quotes ? `"${snippet}"` : snippet;
break;
case "object":
if (Array.isArray(result)) {
snippet = result.map(res => {
switch (typeof res) {
case "string":
return res.substring(0, sample_line_char_max / result.length);
case "object":
return res[Object.keys(res)[0]];
}
}).join(', ');
} else {
snippet = result[Object.keys(result)[0]];
}
}
console.log(snippet);
return result;
}
// DRIVER UTILITY FUNCTIONS
async function navigate_to(url) {
await driver.get(url);
await driver.sleep(driver_pause);
}
async function click_on(ref) {
await (await locate(ref)).click();
await driver.sleep(driver_pause);
}
async function click_on_acm_tab(target) {
await click_on(`//*[@id="tab-10${tab_map[target]}-btnInnerEl"]/span`);
}
async function locate(ref, multiple = false) {
let locator = ref.startsWith("//") ? By.xpath(ref) : By.id(ref);
return await multiple ? driver.findElements(locator) : driver.findElement(locator);
}
async function text_of(ref) {
let element = await locate(ref);
return await element.getText();
}
async function text_of_all(ref) {
let elements = await locate(ref, true);
let results = [];
for (let element of elements) {
results.push(await element.getText());
}
return results;
}
async function logged_assign(key, value) {
log_read(key);
result[key] = log_snippet(value);
}
// TEXT SCRAPING
async function read_authors() {
let authors = await text_of('//*[@id="tabpanel-1009-body"]');
let sanitize = line => line.length > 0 && !(line.startsWith("No contact information") || line.startsWith("View colleagues of") || line.startsWith("Bibliometrics:"));
let author_lines = authors.split("\n").map(line => line.trim()).filter(sanitize);
let all_authors = [];
let i = 0;
while (i < author_lines.length) {
let individual = [];
while (!author_lines[i].startsWith("Average citations")) {
individual.push(author_lines[i]);
i++;
}
individual.push(author_lines[i]);
all_authors.push(individual);
i++;
}
return all_authors;
}
async function read_publication() {
let publciation_elements = (await text_of("source-body")).split("\n");
let publication_module = {};
for (let element of publciation_elements) {
if (element.startsWith("Title")) {
publication_module.title = element.substring(6);
}
}
return publication_module;
}
// JSON / DASH CONVERSION AND EXPORT
function parse_authors(metadata) {
let publicationYears = metadata[1].substring(18).split("-");
author = {
name: metadata[0],
publication_start: parseInt(publicationYears[0]),
publication_end: parseInt(publicationYears[1])
};
for (let count = 2; count < metadata.length; count++) {
let attr = metadata[count];
let char = attr.length - 1;
while (attr[char] != " ") {
char--;
}
let key = attr.substring(0, char).toLowerCase().replace(/ /g, "_").replace(/[\(\)]/g, "");
let value = parseFloat(attr.substring(char + 1).replace(/,/g, ""));
author[key] = value;
}
return author;
}
function write_results() {
console.log();
let output = "";
results.forEach(res => output += (JSON.stringify(res, null, 4) + "\n"));
writeFile("./results.txt", output, function errorHandler(exception) {
console.log(exception || "scraped references successfully written as JSON to ./results.txt");
});
}
async function scrape_targets(error, data) {
if (error) {
console.log("\nUnable to collect target citations from a citations.txt file stored in this directory.\nPlease make sure one is provided.");
return;
}
let references = data.split("\n").map(entry => entry.replace("\r", "")).filter(line => line.match(/\d+/g));
let quota = references.length;
log_snippet(`found ${quota} references to scrape`, false);
driver = await new Builder().forBrowser(target_browser).build();
for (let i = 0; i < quota; i++) {
try {
result = {};
let id = references[i];
let url = `https://dl.acm.org/citation.cfm?id=${id}`;
console.log(`\nscraping ${i + 1}/${quota} (${id})`);
await navigate_to(url);
logged_assign("url", url);
logged_assign("title", await text_of('//*[@id="divmain"]/div/h1'));
logged_assign("abstract", (await text_of_all("abstract-body")).join(" "));
await click_on_acm_tab("authors");
logged_assign("authors", (await read_authors()).map(parse_authors));
await click_on_acm_tab("publication");
logged_assign("publication", await read_publication());
} catch (e) {
console.log(e);
await driver.quit();
}
results.push(result);
}
write_results();
await driver.quit();
}
let driver;
let results = [];
let result = {};
log_read("target references");
readFile("./citations.txt", {
encoding: "utf8"
}, scrape_targets);
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