Merge pull request #13 from rudychung/issue-12

Added config option for #12

README.md

@@ -21,9 +21,11 @@ Or `go install` to install globally.
 
 ## Usage
 
-- `ssgo --input [in] --output [out[` - Generate HTML from .txt or .md file at `in` path (can be a single .txt or .md file, or directory) to `out` path.  
+- `ssgo --input [in] --output [out]` - Generate HTML from .txt or .md file at `in` path (can be a single .txt or .md file, or directory) to `out` path.  
 `--output` is optional, the default out is `dist` folder in the current directory
 
+- `ssgo --config [cfg]` - Uses the options from .json configuration file at `cfg` path to specify options. 
+
 - `ssgo --version` - Display installed version of SSGo
 
 - `ssgo --help` - Display detailed help message
@@ -50,6 +52,8 @@ Also, please be aware that shorthand flags, like `-i`, take as the argument ever
 
 - If `--output` is specified, the directory at path will not be erased like with `dist` folder. Just in case someone specifies `--output C:\...`
 
+- If `--config' is specified, SSG options can be supplied through a .json configuration file instead of through the command-line.
+
 ### Markdown Features
 These feaures are supported for files with an extension of '.md'
 

ssgo.go

@@ -19,21 +19,25 @@ func main() {
 		output string = defaultOutput
 		displayHelp bool = false
 		displayVersion bool = false
+		config string = ""
 	)
 
 	// Flag initialization
 	flag.StringVarP(&input, "input", "i", "", utils.InputHelpMessage)
 	flag.StringVarP(&output, "output", "o", defaultOutput, utils.OutputHelpMessage)
 	flag.BoolVarP(&displayHelp, "help", "h", false, utils.HelpHelpMessage)
 	flag.BoolVarP(&displayVersion, "version", "v", false, utils.VersionHelpMessage)
+	flag.StringVarP(&config, "config", "c", "", utils.ConfigHelpMessage)
 
 	flag.Parse()
 
 	if len(os.Args) == 1 {
 		fmt.Println("Usage: ssgo -i [path] -o [out path]\nHelp: ssgo [-h | --help]")
 		os.Exit(1)
 	} else {
-		if input != "" {
+		if config != "" {
+			utils.ProcessConfig(config)
+		}else if input != "" {
 			utils.ProcessInput(input, output)
 		} else if displayHelp {
 			utils.PrintHelp()

utils/utils.go

@@ -2,6 +2,7 @@ package utils
 
 import (
 	"bufio"
+	"encoding/json"
 	"fmt"
 	"log"
 	"os"
@@ -27,6 +28,7 @@ const (
 	OutputHelpMessage string = "Optional. Additionaly changes the output path of generated HTML"
 	HelpHelpMessage string = "Display detailed help message"
 	VersionHelpMessage string = "Display installed version of SSGo"
+	ConfigHelpMessage  string = "Path to a .json file containing SSGo configuration options"
 )
 
 func PrintHelp() {
@@ -39,6 +41,7 @@ func PrintHelp() {
 	fmt.Println("\t[-o | --output] [out path] \t- " + OutputHelpMessage)
 	fmt.Println("\n\t[-v | --version]           \t- " + HelpHelpMessage)
 	fmt.Println("\t[-h | --help]              \t- " + VersionHelpMessage)
+	fmt.Println("\t[-c | --config]              \t- " + ConfigHelpMessage)
 }
 
 
@@ -155,6 +158,27 @@ func ProcessInput(input string, output string) {
 	fmt.Println("Done! Check '" + output + "' directory to see generated HTML.")
 }
 
+// Takes path to .json file, reads it, and calls ProcessInput using contained options
+func ProcessConfig(config string) {
+
+	// Read config .json file
+	configFile, err := os.ReadFile(config)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Assign json values to options struct
+	options := struct {
+		Input  string `json:"input"`
+		Output string `json:"output"`
+	}{
+		Output: "dist",
+	}
+	json.Unmarshal(configFile, &options)
+
+	// Call ProcessInput using config file options
+	ProcessInput(options.Input, options.Output)
+}
 
 // Takes path to .txt file as an input, reads it, and creates name.html in output folder
 func GenerateHTML(input string, output string, name string) {