added silly xml serializing

3 files changed, 14 insertions, 4 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 103576e..3dfc17d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,6 +31,7 @@ pest_derive = { git = 'https://github.com/pest-parser/pest' }
 serde = '1.0.80'
 serde_derive = '1.0.80'
 serde_json = '1.0.33'
+serde-xml-rs = '0.2.1'
 
 quicli = '0.3.1'
 structopt = '0.2.13'
diff --git a/src/bin.rs b/src/bin.rs
index e203356..0422032 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -6,18 +6,21 @@ use structopt::StructOpt;
 use clap::{_clap_count_exprs, arg_enum};
 use quicli::{main, fs::read_file, prelude::Verbosity};
 
-use self::parser::serialize_json;
+use self::parser::{
+    serialize_json,
+    serialize_xml,
+};
 
 arg_enum! {
     #[derive(Debug)]
-    enum Format { json }
+    enum Format { json, xml }
 }
 
 #[derive(Debug, StructOpt)]
 #[structopt(raw(setting = "structopt::clap::AppSettings::ColoredHelp"))]
 struct Cli {
     #[structopt(
-        long = "format", short = "f", default_value = "json",
+        long = "format", short = "f", default_value = "json",  // xml is pretty defunct…
         raw(possible_values = "&Format::variants()", case_insensitive = "true"),
     )]
     format: Format,
@@ -31,5 +34,6 @@ main!(|args: Cli, log_level: verbosity| {
     let stdout = std::io::stdout();
     match args.format {
         Format::json => serialize_json(&content, stdout)?,
+        Format::xml  => serialize_xml (&content, stdout)?,
     }
 });
diff --git a/src/parser.rs b/src/parser.rs
index 69ead45..a75d2a1 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -125,9 +125,14 @@ pub fn parse(source: &str) -> Result<Document, Error> {
 }
 
 
-/// only until we can serialize DocumentTrees
 pub fn serialize_json<W>(source: &str, stream: W) -> Result<(), Error> where W: Write {
     let parsed = parse(source)?;
     serde_json::to_writer(stream, &parsed)?;
     Ok(())
 }
+
+pub fn serialize_xml<W>(source: &str, stream: W) -> Result<(), Error> where W: Write {
+    let parsed = parse(source)?;
+    serde_xml_rs::serialize(&parsed, stream)?;
+    Ok(())
+}