Continue #29 Check that the rust file exists and read to string

Author: azerupi

src/renderer/html_handlebars/hbs_renderer.rs

@@ -71,8 +71,12 @@ impl Renderer for HtmlHandlebars {
                         debug!("[*]: Reading file");
                         try!(f.read_to_string(&mut content));
 
+                        // Parse for playpen links
+                        if let Some(p) = path.parent() {
+                            helpers::playpen::render_playpen(&mut content, p);
+                        }
+
                         // Render markdown using the pulldown-cmark crate
-                        helpers::playpen::render_playpen(&mut content);
                         content = utils::render_markdown(&content);
                         print_content.push_str(&content);
 

src/renderer/html_handlebars/helpers/playpen.rs

@@ -1,9 +1,26 @@
 use std::path::{Path, PathBuf};
+use std::fs::File;
+use std::io::Read;
 
-pub fn render_playpen(s: &mut str) {
+pub fn render_playpen(s: &mut str, path: &Path) {
+    // When replacing one thing in a string by something with a different length, the indices
+    // after that will not correspond, we therefore have to store the difference to correct this
+    let difference_index = 0;
 
-    for playpen in find_playpens(s) {
-        println!("Playpen{{ {}, {}, {:?}, {} }}", playpen.start_index, playpen.end_index, playpen.rust_file, playpen.editable);
+    for playpen in find_playpens(s, path) {
+
+        // Check if the file exists
+        if !playpen.rust_file.exists() || !playpen.rust_file.is_file() {
+            output!("[-] No file exists for {{{{#playpen }}}}\n    {}", playpen.rust_file.to_str().unwrap());
+            continue
+        }
+
+        // Open file & read file
+        let mut file = if let Ok(f) = File::open(&playpen.rust_file) { f } else { continue };
+        let mut file_content = String::new();
+        if let Err(_) = file.read_to_string(&mut file_content) { continue };
+
+        //println!("Playpen{{ {}, {}, {:?}, {} }}", playpen.start_index, playpen.end_index, playpen.rust_file, playpen.editable);
     }
 
 }
@@ -16,21 +33,21 @@ struct Playpen{
     editable: bool
 }
 
-fn find_playpens(s: &str) -> Vec<Playpen> {
+fn find_playpens(s: &str, base_path: &Path) -> Vec<Playpen> {
     let mut playpens = vec![];
     for (i, _) in s.match_indices("{{#playpen") {
-        println!("[*]: find_playpen");
+        debug!("[*]: find_playpen");
 
         // DON'T forget the "+ i" else you have an index out of bounds error !!
         let end_i = if let Some(n) = s[i..].find("}}") { n } else { continue } + i + 2;
 
-        println!("s[{}..{}] = {}", i, end_i, s[i..end_i].to_string());
+        debug!("s[{}..{}] = {}", i, end_i, s[i..end_i].to_string());
 
         // If there is nothing between "{{#playpen" and "}}" skip
         if end_i-2 - (i+10) < 1 { continue }
         if s[i+10..end_i-2].trim().len() == 0 { continue }
 
-        println!("{}", s[i+10..end_i-2].to_string());
+        debug!("{}", s[i+10..end_i-2].to_string());
 
         // Split on whitespaces
         let params: Vec<&str> = s[i+10..end_i-2].split_whitespace().collect();
@@ -44,7 +61,7 @@ fn find_playpens(s: &str) -> Vec<Playpen> {
             Playpen{
                 start_index: i as u32,
                 end_index: end_i as u32,
-                rust_file: PathBuf::from(params[0]),
+                rust_file: base_path.join(PathBuf::from(params[0])),
                 editable: editable,
             }
         )
@@ -64,28 +81,28 @@ fn find_playpens(s: &str) -> Vec<Playpen> {
 #[test]
 fn test_find_playpens_no_playpen() {
     let s = "Some random text without playpen...";
-    assert!(find_playpens(s) == vec![]);
+    assert!(find_playpens(s, Path::new("")) == vec![]);
 }
 
 #[test]
 fn test_find_playpens_partial_playpen() {
     let s = "Some random text with {{#playpen...";
-    assert!(find_playpens(s) == vec![]);
+    assert!(find_playpens(s, Path::new("")) == vec![]);
 }
 
 #[test]
 fn test_find_playpens_empty_playpen() {
     let s = "Some random text with {{#playpen}} and {{#playpen   }}...";
-    assert!(find_playpens(s) == vec![]);
+    assert!(find_playpens(s, Path::new("")) == vec![]);
 }
 
 #[test]
 fn test_find_playpens_simple_playpen() {
     let s = "Some random text with {{#playpen file.rs}} and {{#playpen test.rs }}...";
 
-    println!("\nOUTPUT: {:?}\n", find_playpens(s));
+    println!("\nOUTPUT: {:?}\n", find_playpens(s, Path::new("")));
 
-    assert!(find_playpens(s) == vec![
+    assert!(find_playpens(s, Path::new("")) == vec![
         Playpen{start_index: 22, end_index: 42, rust_file: PathBuf::from("file.rs"), editable: false},
         Playpen{start_index: 47, end_index: 68, rust_file: PathBuf::from("test.rs"), editable: false}
     ]);
@@ -95,10 +112,10 @@ fn test_find_playpens_simple_playpen() {
 fn test_find_playpens_complex_playpen() {
     let s = "Some random text with {{#playpen file.rs editable}} and {{#playpen test.rs editable }}...";
 
-    println!("\nOUTPUT: {:?}\n", find_playpens(s));
+    println!("\nOUTPUT: {:?}\n", find_playpens(s, Path::new("dir")));
 
-    assert!(find_playpens(s) == vec![
-        Playpen{start_index: 22, end_index: 51, rust_file: PathBuf::from("file.rs"), editable: true},
-        Playpen{start_index: 56, end_index: 86, rust_file: PathBuf::from("test.rs"), editable: true}
+    assert!(find_playpens(s, Path::new("dir")) == vec![
+        Playpen{start_index: 22, end_index: 51, rust_file: PathBuf::from("dir/file.rs"), editable: true},
+        Playpen{start_index: 56, end_index: 86, rust_file: PathBuf::from("dir/test.rs"), editable: true}
     ]);
 }