rename -D to -d, allow multiple occurrences

README.md

@@ -113,7 +113,7 @@ cat index.html | monolith -aIiFfcMv -b https://original.site/ - > result.html
  - `-b`: Use custom `base URL`
  - `-c`: Exclude CSS
  - `-C`: Save document using custom `charset`
- - `-D`: Allow retrieving assets only from specified `domain(s)`
+ - `-d`: Allow retrieving assets only from specified `domain(s)`
  - `-e`: Ignore network errors
  - `-E`: Exclude all assets located within domains specified in whitelist
  - `-f`: Omit frames

src/opts.rs

@@ -1,4 +1,4 @@
-use clap::{App, Arg};
+use clap::{App, Arg, ArgAction};
 use std::env;
 
 #[derive(Default)]
@@ -52,9 +52,17 @@ impl Options {
             .args_from_usage("-b, --base-url=[http://localhost/] 'Sets custom base URL'")
             .args_from_usage("-c, --no-css 'Removes CSS'")
             .args_from_usage("-C, --charset=[UTF-8] 'Enforces custom encoding'")
-            .args_from_usage("-D, --domains=[bad.org,ads.site] 'Whitelist of domains'")
+            .arg(
+                Arg::with_name("domains")
+                    .short('d')
+                    .long("domains")
+                    .takes_value(true)
+                    .value_name("DOMAINS")
+                    .action(ArgAction::Append)
+                    .help("Whitelist of domains"),
+            )
             .args_from_usage("-e, --ignore-errors 'Ignore network errors'")
-            .args_from_usage("-E, --exclude-domains 'Treat list of specified domains as blacklist'")
+            .args_from_usage("-E, --exclude-domains 'Treat specified domains as blacklist'")
             .args_from_usage("-f, --no-frames 'Removes frames and iframes'")
             .args_from_usage("-F, --no-fonts 'Removes fonts'")
             .args_from_usage("-i, --no-images 'Removes images'")
@@ -95,8 +103,16 @@ impl Options {
         if let Some(charset) = app.value_of("charset") {
             options.charset = Some(charset.to_string());
         }
-        if let Some(domains) = app.value_of("domains") {
-            options.domains = Some(domains.split(",").map(|s| s.to_string()).collect());
+        if let Some(domains) = app.get_many::<String>("domains") {
+            let mut final_list_of_domains: Vec<String> = Vec::new();
+            let provided_arguments: Vec<&str> = domains.map(|v| v.as_str()).collect::<Vec<_>>();
+            for provided_argument in provided_arguments {
+                let comma_separated_domains: Vec<&str> = provided_argument.split(",").collect();
+                for comma_separated_domain in comma_separated_domains {
+                    final_list_of_domains.push(comma_separated_domain.trim().to_string());
+                }
+            }
+            options.domains = Some(final_list_of_domains);
         }
         options.ignore_errors = app.is_present("ignore-errors");
         options.exclude_domains = app.is_present("exclude-domains");

src/utils.rs

@@ -266,23 +266,14 @@ pub fn retrieve_asset(
                 "".to_string(),
             ))
         } else {
-            if options.exclude_domains {
-                if let Some(domains) = &options.domains {
-                    if domains
-                        .iter()
-                        .any(|d| domain_is_within_domain(url.host_str().unwrap(), &d.trim()))
-                    {
-                        return Err(client.get("").send().unwrap_err());
-                    }
-                }
-            } else {
-                if let Some(domains) = &options.domains {
-                    if domains
-                        .iter()
-                        .any(|d| !domain_is_within_domain(url.host_str().unwrap(), &d.trim()))
-                    {
-                        return Err(client.get("").send().unwrap_err());
-                    }
+            if let Some(domains) = &options.domains {
+                let domain_matches = domains
+                    .iter()
+                    .any(|d| domain_is_within_domain(url.host_str().unwrap(), &d.trim()));
+                if (options.exclude_domains && domain_matches)
+                    || (!options.exclude_domains && !domain_matches)
+                {
+                    return Err(client.get("").send().unwrap_err());
                 }
             }