From 7be4af42648cc4d18f5eff4b7f99abaa24c5cb52 Mon Sep 17 00:00:00 2001
From: Elisabeth Henry <liz.henry@ouvaton.org>
Date: Tue, 1 Mar 2016 17:43:40 +0100
Subject: [PATCH] Add option --single to the binary

This option allows Crowbook to parse a single MarkDown file,
defaulting to hide the chapters' headings. This should allow to get
ride of `.book` file for short stories.

Resolves: #2, #3
---
 src/bin/helpers.rs | 5 +++--
 src/bin/main.rs    | 9 ++++++++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/bin/helpers.rs b/src/bin/helpers.rs
index 5ce0325..ea3f017 100644
--- a/src/bin/helpers.rs
+++ b/src/bin/helpers.rs
@@ -86,6 +86,7 @@ pub fn create_matches<'a>() -> ArgMatches<'a> {
         .setting(AppSettings::UnifiedHelpMessage)
         .version(env!("CARGO_PKG_VERSION"))
         .about("Render a markdown book in Epub, PDF or HTML.")
+        .arg_from_usage("-s, --single 'Create a book from a single MarkDown file'")
         .arg_from_usage("-v, --verbose 'Print warnings in parsing/rendering'")
         .arg_from_usage("-d, --debug 'Print additional information")
         .arg_from_usage("--create [FILES]... 'Creates a new book with existing markdown files.'")
@@ -93,10 +94,10 @@ pub fn create_matches<'a>() -> ArgMatches<'a> {
              .requires("to"))
         .arg(Arg::from_usage("-t, --to [FORMAT] 'Generate specific format'")
              .possible_values(&["epub", "pdf", "html", "tex", "odt"]))
-        .arg(Arg::from_usage("-s, --set [KEY_VALUES] 'Sets a list of book options'")
+        .arg(Arg::from_usage("--set [KEY_VALUES] 'Sets a list of book options'")
              .min_values(2))
         .arg(Arg::from_usage("-l --list-options 'Lists all possible options"))
-        .arg_from_usage("--list-options-md 'List all options, formatted in Markdown")
+        .arg_from_usage("--list-options-md 'List all options, formatted in Markdown.'")
         .arg_from_usage("--print-template [TEMPLATE] 'Displays the default value of a template.'")
         .arg(Arg::with_name("BOOK")
              .index(1)
diff --git a/src/bin/main.rs b/src/bin/main.rs
index accf8a5..1659f2b 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -137,7 +137,14 @@ fn main() {
     } else {
         InfoLevel::Info
     };
-    match Book::new_from_file(s, verbosity) {
+
+    let book_res = if matches.is_present("single") {
+        Book::new_from_markdown_file(s, verbosity)
+    } else {
+        Book::new_from_file(s, verbosity)
+    };
+            
+    match book_res {
         Err(err) => print_error(&format!("{}", err)),
         Ok(mut book) => {
             set_book_options(&mut book, &matches);