From 2e9da53ed3fce705df82defec5944981aae1e74c Mon Sep 17 00:00:00 2001
From: Nickolay Ponomarev <asqueella@gmail.com>
Date: Wed, 30 Jan 2019 15:41:50 +0300
Subject: [PATCH] Small CLI app that can be used to test parsing an external
 SQL file

---
 Cargo.toml      |  3 +++
 examples/cli.rs | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 examples/cli.rs

diff --git a/Cargo.toml b/Cargo.toml
index 7106111a..99e49b17 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,3 +21,6 @@ path = "src/lib.rs"
 log = "0.4.5"
 chrono = "0.4.6"
 uuid = "0.7.1"
+
+[dev-dependencies]
+simple_logger = "1.0.1"
diff --git a/examples/cli.rs b/examples/cli.rs
new file mode 100644
index 00000000..545e8218
--- /dev/null
+++ b/examples/cli.rs
@@ -0,0 +1,46 @@
+extern crate simple_logger;
+extern crate sqlparser;
+///! A small command-line app to run the parser.
+/// Run with `cargo run --example cli`
+use std::fs;
+
+use sqlparser::dialect::GenericSqlDialect;
+use sqlparser::sqlparser::Parser;
+
+fn main() {
+    simple_logger::init().unwrap();
+
+    let filename = std::env::args()
+        .nth(1)
+        .expect("No arguments provided!\n\nUsage: cargo run --example cli FILENAME.sql");
+
+    let contents =
+        fs::read_to_string(&filename).expect(&format!("Unable to read the file {}", &filename));
+    let without_bom = if contents.chars().nth(0).unwrap() as u64 != 0xfeff {
+        contents.as_str()
+    } else {
+        let mut chars = contents.chars();
+        chars.next();
+        chars.as_str()
+    };
+    println!("Input:\n'{}'", &without_bom);
+    let parse_result = Parser::parse_sql(&GenericSqlDialect {}, without_bom.to_owned());
+    match parse_result {
+        Ok(statements) => {
+            println!(
+                "Round-trip:\n'{}'",
+                statements
+                    .iter()
+                    .map(|s| s.to_string())
+                    .collect::<Vec<_>>()
+                    .join("\n")
+            );
+            println!("Parse results:\n{:#?}", statements);
+            std::process::exit(0);
+        }
+        Err(e) => {
+            println!("Error during parsing: {:?}", e);
+            std::process::exit(1);
+        }
+    }
+}