From da2255557fa395eeabeff9a4f2949582f8811980 Mon Sep 17 00:00:00 2001
From: Andinus <andinus@nand.sh>
Date: Mon, 6 Apr 2020 22:11:15 +0530
Subject: Initial grus version

---
 cmd/grus/grus.go | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 cmd/grus/grus.go

(limited to 'cmd/grus/grus.go')

diff --git a/cmd/grus/grus.go b/cmd/grus/grus.go
new file mode 100644
index 0000000..a68db97
--- /dev/null
+++ b/cmd/grus/grus.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+
+	"tildegit.org/andinus/grus/lexical"
+	"tildegit.org/andinus/grus/search"
+	"tildegit.org/andinus/grus/storage"
+)
+
+func grus() {
+	version := "v0.1.0"
+
+	// Early Check: If command was not passed then print usage and
+	// exit. Later command & service both are checked, this check
+	// is for version command. If not checked then running grus
+	// without any args will fail because os.Args[1] will panic
+	// the program & produce runtime error.
+	if len(os.Args) == 1 || len(os.Args[1]) == 0 {
+		printUsage()
+		os.Exit(0)
+	}
+
+	// Running just `grus` would've paniced the program here if
+	// length of os.Args was not checked beforehand because there
+	// would be no os.Args[1].
+	switch os.Args[1] {
+	case "version", "v", "-version", "--version", "-v":
+		fmt.Printf("Grus %s\n", version)
+		os.Exit(0)
+	case "help", "-help", "--help", "-h":
+		printUsage()
+		os.Exit(0)
+	case "init", "i":
+		db := storage.Init()
+		db.Conn.Close()
+		os.Exit(0)
+	}
+
+	// Initialize the database connection.
+	db := storage.InitConn()
+	defer db.Conn.Close()
+
+	word := os.Args[1]
+	sorted := lexical.Sort(word)
+
+	out, err := search.Word(sorted, db)
+	if err == sql.ErrNoRows {
+		fmt.Println("Word not found in database.")
+		return
+	} else if err != nil {
+		log.Fatalf("grus: Search failed :: %s", err)
+	}
+	fmt.Println(out)
+}
-- 
cgit 1.4.1-2-gfad0