Adds a better way to manage LaTeX resources for the book template

compiler/book.go

@@ -33,6 +33,8 @@ func MakeBook(path string, opts *settings.Settings) {
 	// Sort scores
 	sort.Sort(settings.ScoresByName{scores})
 
+	getBookResources(opts)
+
 	templ, err := parseBookTemplate(opts)
 
 	texPath := filepath.Join(opts.OutputDir, opts.Name+".tex")
@@ -62,18 +64,7 @@ func MakeBook(path string, opts *settings.Settings) {
 		}).Fatal("songbook failed to compile")
 	}
 
-	cmd = exec.Command("latexmk", "-c", "-cd", texPath)
-	out, err = cmd.CombinedOutput()
-	if err != nil {
-		log.WithFields(log.Fields{
-			"message": string(out),
-			"error":   err,
-		}).Error("failed to clean songbook latex files")
-	}
-	if !opts.KeepBookTemplate {
-		err = os.Remove(texPath)
-	}
-	helpers.Check(err, "could not remove songbook latex template")
+	cleanBookResources(texPath, opts)
 }
 
 // scoreCategories returns a sorted slice of all categories used
@@ -103,3 +94,44 @@ func unknownCategories(scores *[]settings.Score) bool {
 	}
 	return false
 }
+
+// getBookResources copies the LaTeX resources to the compile directory
+func getBookResources(opts *settings.Settings) {
+	for i := range opts.LatexResources {
+		log.WithFields(log.Fields{"path": opts.LatexResources[i]}).Debug("copying latex resource")
+
+		err := os.Link(opts.LatexResources[i], filepath.Join(opts.OutputDir, filepath.Base(opts.LatexResources[i])))
+
+		if err != nil {
+			log.WithError(err).Warning("could not link LaTeX resource")
+		}
+	}
+}
+
+// cleanBookResources removes both LaTeX generated files and copied resources
+func cleanBookResources(bookpath string, opts *settings.Settings) {
+	var err error
+	log.Debug("removing LaTeX resources")
+	for i := range opts.LatexResources {
+		err = os.RemoveAll(filepath.Join(opts.OutputDir, filepath.Base(opts.LatexResources[i])))
+		if err != nil {
+			helpers.Check(err, "could not remove latex resource")
+		}
+	}
+
+	log.Debug("removing LaTeX generated files")
+	cmd := exec.Command("latexmk", "-c", "-cd", bookpath)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		log.WithFields(log.Fields{
+			"message": string(out),
+			"error":   err,
+		}).Error("failed to clean songbook latex files")
+	}
+
+	if !opts.KeepBookTemplate {
+		log.Debug("removing LaTeX template")
+		err = os.Remove(bookpath)
+	}
+	helpers.Check(err, "could not remove songbook latex template")
+}

helpers/error_utils.go

@@ -18,9 +18,7 @@ import log "github.com/Sirupsen/logrus"
 
 // Crash outputs it's arguments to the log and stops the program
 func Crash(err error, msg string) {
-	log.WithFields(log.Fields{
-		"error": err,
-	}).Fatal(msg)
+	log.WithError(err).Fatal(msg)
 }
 
 // Check calls Crash if the error is not nil

settings/settings.go

@@ -36,6 +36,7 @@ type Settings struct {
 	BookTitleTempl       string   // Override for the partial book template creating the title page
 	BookCategoryTempl    string   // Override for the partial book template creating category pages
 	BookScoreTempl       string   // Override for the partial book template placing scores
+	LatexResources       []string // Files to be copied to compile the book template
 	KeepBookTemplate     bool     // Leave the LaTeX source for the book in the output directory
 }
 
@@ -64,5 +65,8 @@ func (s *Settings) AbsolutePaths(root string) {
 	for i := range s.LilypondIncludes {
 		s.LilypondIncludes[i] = helpers.AbsolutePath(s.LilypondIncludes[i], root)
 	}
+	for i := range s.LatexResources {
+		s.LatexResources[i] = helpers.AbsolutePath(s.LatexResources[i], root)
+	}
 	s.OutputDir = helpers.AbsolutePath(s.OutputDir, root)
 }