fix #36 rewrite base_ur l at local server startup

In addition, replace Optional with Result.
https://github.com/vlang/v/blob/master/doc/docs.md#optionresult-types-and-error-handling

commands/build.v

@@ -32,6 +32,8 @@ mut:
 fn new_builder(logger log.Log) Builder {
 	return Builder{
 		logger: logger
+		dist: commands.default_dist
+		static_dir: commands.defautl_static
 	}
 }
 
@@ -40,10 +42,11 @@ fn new_build_cmd() cli.Command {
 		name: 'build'
 		description: 'build your site'
 		usage: 'vss build'
-		execute: fn (cmd cli.Command) ? {
+		execute: fn (cmd cli.Command) ! {
 			mut logger := log.Log{}
 			logger.set_level(log.Level.info)
-			build(mut logger) or {
+			config := load_config(commands.default_config)!
+			build(config, mut logger) or {
 				logger.error(err.msg())
 				println('Build failed')
 			}
@@ -51,11 +54,6 @@ fn new_build_cmd() cli.Command {
 	}
 }
 
-fn read_file(filename string) ?string {
-	contents := os.read_file(filename.trim_space())?
-	return contents
-}
-
 fn get_html_path(md_path string) string {
 	mut file_name := os.file_name(md_path)
 	file_name = file_name.replace('.md', '.html')
@@ -75,10 +73,10 @@ fn normalise_paths(paths []string) []string {
 }
 
 // pre_proc_md_to_html convert markdown relative links to html relative links
-fn pre_proc_md_to_html(contents string) ?string {
+fn pre_proc_md_to_html(contents string) !string {
 	lines := contents.split_into_lines()
 	mut parsed_lines := []string{len: lines.len}
-	mut re := regex.regex_opt(r'\[.+\]\(.+\.md\)')?
+	mut re := regex.regex_opt(r'\[.+\]\(.+\.md\)') or { return err }
 
 	for i, line in contents.split_into_lines() {
 		start, end := re.find(line)
@@ -91,56 +89,52 @@ fn pre_proc_md_to_html(contents string) ?string {
 	return parsed_lines.join('\n')
 }
 
-fn get_md_content(path string) ?string {
-	md := os.read_file(path)?
+fn get_md_content(path string) !string {
+	md := os.read_file(path)!
 	return pre_proc_md_to_html(md)
 }
 
-fn get_content(path string) ?string {
-	md := get_md_content(path)?
+fn get_content(path string) !string {
+	md := get_md_content(path)!
 	return markdown.to_html(md)
 }
 
-fn (mut b Builder) md2html(md_path string) ? {
+fn (mut b Builder) md2html(md_path string) ! {
 	// get html body content from md
-	content := get_content(md_path)?
+	content := get_content(md_path)!
 	// want to change from contents to content
 	b.config_map['contents'] = content
 	html := template.parse(b.template_content, b.config_map)
 	html_path := get_html_path(md_path)
 	dist_path := os.join_path(b.dist, html_path)
 	if !os.exists(os.dir(dist_path)) {
-		os.mkdir_all(os.dir(dist_path))?
+		os.mkdir_all(os.dir(dist_path))!
 	}
-	os.write_file(dist_path, html)?
+	os.write_file(dist_path, html)!
 }
 
-fn (mut b Builder) load_config() ? {
-	toml_text := read_file(commands.default_config)?
-	config := config.load(toml_text)?
-	template_content := os.read_file(commands.default_template)?
-
-	b.config = config
-	b.dist = commands.default_dist
-	b.static_dir = commands.defautl_static
-	b.template_content = template_content
-	b.config_map = config.as_map()
+// load_config loads a toml config file
+fn load_config(toml_file string) !config.Config {
+	toml_text := os.read_file(toml_file)!
+	return config.load(toml_text)
 }
 
-fn (b Builder) copy_static() ? {
+// copy_static copy static files to dist
+fn (b Builder) copy_static() ! {
 	if os.exists(b.static_dir) {
-		os.cp_all(b.static_dir, b.dist, false)?
+		os.cp_all(b.static_dir, b.dist, false)!
 	}
 }
 
-fn (mut b Builder) create_dist_dir() ? {
+// create_dist_dir create build output destination
+fn (mut b Builder) create_dist_dir() ! {
 	if os.exists(b.dist) {
 		b.logger.info('re-create dist dir')
-		os.rmdir_all(b.dist)?
-		os.mkdir_all(b.dist)?
+		os.rmdir_all(b.dist)!
+		os.mkdir_all(b.dist)!
 	} else {
 		b.logger.info('create dist dir')
-		os.mkdir_all(b.dist)?
+		os.mkdir_all(b.dist)!
 	}
 }
 
@@ -154,15 +148,19 @@ fn (mut b Builder) is_ignore(path string) bool {
 	return false
 }
 
-fn build(mut logger log.Log) ? {
+fn build(config config.Config, mut logger log.Log) ! {
 	println('Start building')
 	mut sw := time.new_stopwatch()
 	mut b := new_builder(logger)
-	b.load_config()?
-	b.create_dist_dir()?
+	template_content := os.read_file(commands.default_template)!
+	b.template_content = template_content
+	b.config = config
+	b.config_map = config.as_map()
+
+	b.create_dist_dir()!
 	// copy static dir files
 	logger.info('copy static files')
-	b.copy_static()?
+	b.copy_static()!
 
 	mds := normalise_paths(os.walk_ext('.', '.md'))
 	logger.info('start md to html')
@@ -171,7 +169,7 @@ fn build(mut logger log.Log) ? {
 			logger.info('$path is included in ignore_files, skip build')
 			continue
 		}
-		b.md2html(path)?
+		b.md2html(path)!
 	}
 	logger.info('end md to html')
 

commands/serve.v

@@ -4,6 +4,7 @@ import cli
 import log
 import net.http
 import os
+import internal.config
 
 const cport = 8080
 
@@ -12,7 +13,7 @@ fn new_serve_cmd() cli.Command {
 		name: 'serve'
 		description: 'serve dist'
 		usage: 'vss serve'
-		execute: fn (cmd cli.Command) ? {
+		execute: fn (cmd cli.Command) ! {
 			mut logger := log.Log{}
 			logger.set_level(log.Level.info)
 			serve(mut logger) or {
@@ -72,7 +73,7 @@ mut:
 	time_stamp i64
 }
 
-fn watch(path string, mut logger log.Log) {
+fn watch(path string, config config.Config, mut logger log.Log) {
 	mut res := []string{}
 	os.walk_with_context(path, &res, fn (mut res []string, fpath string) {
 		res << fpath
@@ -98,7 +99,7 @@ fn watch(path string, mut logger log.Log) {
 				println('modified file: $w.path')
 				w.time_stamp = now
 
-				build(mut logger) or {
+				build(config, mut logger) or {
 					logger.error(err.msg())
 					println('Build failed')
 				}
@@ -107,7 +108,7 @@ fn watch(path string, mut logger log.Log) {
 	}
 }
 
-fn serve(mut logger log.Log) ? {
+fn serve(mut logger log.Log) ! {
 	mut handler := MyHttpHandler{
 		root: 'dist'
 	}
@@ -115,9 +116,20 @@ fn serve(mut logger log.Log) ? {
 		handler: handler
 		port: commands.cport
 	}
-	println('http://localhost:$commands.cport')
-	w := go watch('.', mut logger)
-	server.listen_and_serve() or { panic(err) }
+
+	local_base_url := 'http://localhost:$commands.cport/'
+	mut config := load_config(default_config)!
+	config.base_url = local_base_url
+	println(local_base_url)
+
+	// build before server startup
+	build(config, mut logger) or {
+		logger.error(err.msg())
+		println('Build failed')
+	}
+
+	w := go watch('.', config, mut logger)
+	server.listen_and_serve()
 
 	w.wait()
 }

commands/vss.v

@@ -8,7 +8,7 @@ pub fn execute() {
 		name: 'vss'
 		version: '0.0.12'
 		description: 'static site generator'
-		execute: fn (cmd cli.Command) ? {
+		execute: fn (cmd cli.Command) ! {
 			println(cmd.help_message())
 		}
 	}

internal/config/config.v

@@ -21,8 +21,8 @@ pub mut:
 }
 
 // load
-pub fn load(toml_text string) ?Config {
-	doc := toml.parse_text(toml_text)?
+pub fn load(toml_text string) !Config {
+	doc := toml.parse_text(toml_text)!
 
 	mut config := doc.reflect<Config>()
 	config.build = doc.value('build').reflect<Build>()