begin implementing separate metadata parsing

internal/builder/process.go

@@ -0,0 +1,73 @@
+package builder
+
+import (
+	"io/fs"
+	"path/filepath"
+
+	"github.com/ficcdaf/zona/internal/util"
+)
+
+type ProcessMemory struct {
+	// Pages holds all page data that may be
+	// needed while building *other* pages.
+	Pages []*Page
+	// Queue is a FIFO queue of Pages indexes to be built.
+	// queue should be constructed after all the Pages have been parsed
+	Queue []int
+	// Posts is an array of pointers to post pages
+	Posts []*Page
+}
+
+type Page struct {
+	Data    *PageData
+	Ext     string
+	InPath  string
+	OutPath string
+	Copy    bool
+}
+
+// processFile processes the metadata only
+// of each file
+func processFile(inPath string, entry fs.DirEntry, err error, outRoot string, settings *Settings, pm *ProcessMemory) error {
+	if err != nil {
+		return err
+	}
+	var toProcess bool
+	var outPath string
+	var ext string
+	if !entry.IsDir() {
+		ext = filepath.Ext(inPath)
+		outPath = util.ReplaceRoot(inPath, outRoot)
+		switch ext {
+		case ".md":
+			// fmt.Println("Processing markdown...")
+			toProcess = true
+			outPath = util.ChangeExtension(outPath, ".html")
+		// If it's not a file we need to process,
+		// we simply copy it to the destination path.
+		default:
+			toProcess = false
+		}
+	}
+	page := &Page{
+		nil,
+		ext,
+		inPath,
+		outPath,
+		!toProcess,
+	}
+	if toProcess {
+		// process its frontmatter here
+		m, err := processFrontmatter(inPath)
+		if err != nil {
+			return err
+		}
+		pd := buildPageData(m, inPath, outPath, settings)
+		if pd.Type == "post" {
+			pm.Posts = append(pm.Posts, page)
+		}
+		page.Data = pd
+	}
+	pm.Pages = append(pm.Pages, page)
+	return nil
+}