Merge pull request #51 from mandolyte/support-scandir

Support scandir

README.md

@@ -86,6 +86,11 @@ To benefit from Syntax highlighting, invoke thusly:
 $ go run md2pdf.go -i syn_test.md -s /path/to/syntax_files -o test.pdf
 ```
 
+To convert multiple MD files into a single PDF, use:
+```
+$ go run md2pdf.go -i /path/to/md/directory -o test.pdf
+```
+
 This repo has the [gohighlight module](https://github.com/jessp01/gohighlight) configured as a submodule so if you clone
 with `--recursive`, you will have the `highlight` dir in its root. Alternatively, you may issue the below to update an
 existing clone:
@@ -106,7 +111,7 @@ annotation name must match syntax base filename.*
 
 ```sh
   -i string
-    	Input text filename; default is os.Stdin
+	Input filename, dir consisting of .md|.markdown files or HTTP(s) URL; default is os.Stdin
   -o string
     	Output PDF filename; required
   -s string

cmd/md2pdf/md2pdf.go

@@ -13,10 +13,12 @@ import (
 	"runtime"
 	"strings"
 
+	"github.com/gomarkdown/markdown/parser"
 	"github.com/mandolyte/mdtopdf"
+	"golang.org/x/exp/slices"
 )
 
-var input = flag.String("i", "", "Input filename or HTTP(s) URL; default is os.Stdin")
+var input = flag.String("i", "", "Input filename, dir consisting of .md|.markdown files or HTTP(s) URL; default is os.Stdin")
 var output = flag.String("o", "", "Output PDF filename; required")
 var pathToSyntaxFiles = flag.String("s", "", "Path to github.com/jessp01/gohighlight/syntax_files")
 var title = flag.String("title", "", "Presentation title")
@@ -49,6 +51,18 @@ func processRemoteInputFile(url string) ([]byte, error) {
 	return content, rerr
 }
 
+func glob(dir string, validExts []string) ([]string, error) {
+	files := []string{}
+	err := filepath.Walk(dir, func(path string, f os.FileInfo, err error) error {
+		if slices.Contains(validExts, filepath.Ext(path)) {
+			files = append(files, path)
+		}
+		return nil
+	})
+
+	return files, err
+}
+
 func main() {
 	log.SetFlags(log.LstdFlags | log.Lshortfile)
 	flag.Parse()
@@ -94,10 +108,34 @@ func main() {
 			// get the base URL so we can adjust relative links and images
 			inputBaseURL = strings.Replace(filepath.Dir(*input), ":/", "://", 1)
 		} else {
-			content, err = ioutil.ReadFile(*input)
+			fileInfo, err := os.Stat(*input)
 			if err != nil {
 				log.Fatal(err)
 			}
+
+			if fileInfo.IsDir() {
+				opts = append(opts, mdtopdf.IsHorizontalRuleNewPage(true))
+				validExts := []string{".md", ".markdown"}
+				files, err := glob(*input, validExts)
+				if err != nil {
+					log.Fatal(err)
+				}
+				for i, filePath := range files {
+					fileContents, err := ioutil.ReadFile(filePath)
+					if err != nil {
+						log.Fatal(err)
+					}
+					content = append(content, fileContents...)
+					if i < len(files)-1 {
+						content = append(content, []byte("---\n")...)
+					}
+				}
+			} else {
+				content, err = ioutil.ReadFile(*input)
+				if err != nil {
+					log.Fatal(err)
+				}
+			}
 		}
 	}
 
@@ -119,6 +157,7 @@ func main() {
 	pf.Pdf.SetSubject(*title, true)
 	pf.Pdf.SetTitle(*title, true)
 	pf.BackgroundColor = mdtopdf.Colorlookup(backgroundColor)
+	pf.Extensions = parser.NoIntraEmphasis | parser.Tables | parser.FencedCode | parser.Autolink | parser.Strikethrough | parser.SpaceHeadings | parser.HeadingIDs | parser.BackslashLineBreak | parser.DefinitionLists
 
 	if *fontFile != "" && *fontName != "" {
 		pf.Pdf.AddFont(*fontName, "", *fontFile)

go.mod

@@ -10,4 +10,6 @@ require (
 	github.com/jessp01/gohighlight v0.21.1-7
 	github.com/mcuadros/go-version v0.0.0-20190830083331-035f6764e8d2 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/stretchr/testify v1.8.4 // indirect
+	golang.org/x/exp v0.0.0-20231108232855-2478ac86f678
 )

go.sum

@@ -10,10 +10,9 @@ github.com/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q
 github.com/gabriel-vasile/mimetype v1.4.2/go.mod h1:zApsH/mKG4w07erKIaJPFiX0Tsq9BFQgN3qGY5GnNgA=
 github.com/go-pdf/fpdf v0.9.0 h1:PPvSaUuo1iMi9KkaAn90NuKi+P4gwMedWPHhj8YlJQw=
 github.com/go-pdf/fpdf v0.9.0/go.mod h1:oO8N111TkmKb9D7VvWGLvLJlaZUQVPM+6V42pp3iV4Y=
-github.com/gomarkdown/markdown v0.0.0-20230716120725-531d2d74bc12 h1:uK3X/2mt4tbSGoHvbLBHUny7CKiuwUip3MArtukol4E=
-github.com/gomarkdown/markdown v0.0.0-20230716120725-531d2d74bc12/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
 github.com/gomarkdown/markdown v0.0.0-20230922105210-14b16010c2ee h1:gvsnG+uIVkOue7HrYAG2ZnOdLoJTqsLyuBFJaU0kX4M=
 github.com/gomarkdown/markdown v0.0.0-20230922105210-14b16010c2ee/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/jessp01/gohighlight v0.21.1-7 h1:u1CurHm8ogal3AFeDMF97pDJ4aPlPdgZg5PL6ULeTb0=
 github.com/jessp01/gohighlight v0.21.1-7/go.mod h1:52r0Yxd1+T9f7uLenaO2/34K3gPOejxCxXwdNc/2Z8Y=
 github.com/jung-kurt/gofpdf v1.0.0/go.mod h1:7Id9E/uU8ce6rXgefFLlgrJj/GYY22cpxn+r32jIOes=
@@ -34,25 +33,41 @@ github.com/ruudk/golang-pdf417 v0.0.0-20201230142125-a7e3863a1245/go.mod h1:pQAZ
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
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 golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
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 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ=
 golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
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 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -61,26 +76,37 @@ golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
+golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
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mdtopdf.go

@@ -123,6 +123,7 @@ type PdfRenderer struct {
 	Theme                     Theme
 	BackgroundColor           Color
 	documentMatter            ast.DocumentMatters // keep track of front/main/back matter.
+	Extensions                parser.Extensions
 }
 
 // SetLightTheme sets theme to 'light'
@@ -338,9 +339,7 @@ func (r *PdfRenderer) Run(content []byte) error {
 		s = []byte(r.unicodeTranslator(string(s)))
 	}
 
-	// exts := parser.CommonExtensions // parser.OrderedListStart | parser.NoEmptyLineBeforeBlock
-	exts := parser.NoIntraEmphasis | parser.Tables | parser.FencedCode | parser.Autolink | parser.Strikethrough | parser.SpaceHeadings | parser.HeadingIDs | parser.BackslashLineBreak | parser.DefinitionLists
-	p := parser.NewWithExtensions(exts)
+	p := parser.NewWithExtensions(r.Extensions)
 	doc := markdown.Parse(s, p)
 	_ = markdown.Render(doc, r)