Issue 80

src/error.rs

@@ -9,12 +9,18 @@ pub enum Error {
     #[error("The source for a vault must be a directory.")]
     /// Thrown by [`VaultBuilder`](crate::VaultBuilder) when the source is not a directory.
     VaultSourceNotDir,
+
     #[error("The path {0} was not found.")]
     /// An error stating a path does not exist in the filesystem.
     PathNotFound(PathBuf),
+
     #[error("Cannot find the destination for the internal link: {0}")]
     /// An error for when a destination for an internal link cannot be found.
     InvalidInternalLinkDestination(String),
+
+    #[error("Could not format the value: {0}")]
+    FormatError(#[from] serde_json::Error),
+
     #[error(transparent)]
     /// Represents all other errors, likely from another crate.
     Other(#[from] anyhow::Error),

src/lib.rs

@@ -6,7 +6,7 @@ extern crate pest_derive;
 
 pub mod error;
 pub mod note;
-mod utils;
+pub mod utils;
 mod vault;
 
 #[doc(inline)]

src/main.rs

@@ -1,6 +1,7 @@
 use anyhow::{bail, Result};
 use clap::Parser;
 use jql::walker;
+use mdzk::utils::string::format_json_value;
 use std::path::PathBuf;
 
 #[derive(Parser)]
@@ -29,6 +30,19 @@ struct Args {
     /// The ignore patterns are in the gitignore format.
     /// See https://git-scm.com/docs/gitignore#_pattern_format for a reference.
     ignore: Vec<String>,
+
+    #[clap(long = "pretty")]
+    /// Prettify the JSON output
+    ///
+    /// If both --pretty and --raw are specified, the --raw flag takes precedence for strings and arrays.
+    pretty: bool,
+
+    #[clap(short = 'r', long = "raw")]
+    /// Output shell-compatible raw strings and arrays
+    ///
+    /// If the output is a string, it will get formatted without quotes and if the output is an
+    /// array, it's values will get delimited by newlines and printed without square brackets.
+    raw: bool,
 }
 
 fn main() {
@@ -50,7 +64,7 @@ fn run() -> Result<()> {
     let json = serde_json::to_value(vault)?;
 
     match walker(&json, &args.query) {
-        Ok(out) => println!("{}", out),
+        Ok(out) => println!("{}", format_json_value(&out, args.raw, args.pretty)?),
         Err(msg) => bail!(msg),
     }
 

src/utils/string.rs

@@ -1,5 +1,6 @@
-use crate::NoteId;
+use crate::{error::Result, NoteId};
 use pulldown_cmark::escape::escape_href as ehref;
+use serde_json::{to_string, to_string_pretty, Value};
 
 /// Make kebab-cased string
 pub fn kebab(s: impl AsRef<str>) -> String {
@@ -32,3 +33,52 @@ pub fn escape_href(text: &str) -> String {
 pub fn hex(id: &NoteId) -> String {
     format!("{:x}", id)
 }
+
+pub fn format_json_value(val: &Value, raw: bool, pretty: bool) -> Result<String> {
+    Ok(match (pretty, raw, val) {
+        (_, true, Value::String(s)) => s.to_owned(),
+        (_, true, Value::Array(a)) => {
+            let mut acc: Vec<String> = Vec::new();
+            for val in a {
+                let val = format_json_value(val, true, false)?;
+                acc.push(val);
+            }
+            acc.join("\n")
+        }
+        (true, _, _) => to_string_pretty(val)?,
+        _ => to_string(val)?,
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_format_json_value() {
+        let want = r#"{
+  "key": "value",
+  "another-key": [
+    1,
+    2,
+    3
+  ]
+}"#
+        .to_string();
+        let object = json!({ "key": "value", "another-key": [1, 2, 3]});
+        assert_eq!(want, format_json_value(&object, false, true).unwrap());
+
+        use serde_json::json;
+        let string = json!("test");
+        assert_eq!(
+            "test".to_string(),
+            format_json_value(&string, true, false).unwrap()
+        );
+
+        let arr = json!(["el1", "el2", "el3"]);
+        assert_eq!(
+            "el1\nel2\nel3".to_string(),
+            format_json_value(&arr, true, false).unwrap()
+        )
+    }
+}

src/vault/mod.rs

@@ -161,7 +161,8 @@ struct VaultSerialized {
 impl From<&Vault> for VaultSerialized {
     fn from(vault: &Vault) -> Self {
         Self {
-            notes: vault.notes
+            notes: vault
+                .notes
                 .par_iter()
                 .map(|(id, note)| {
                     NoteSerialized::new(