Use Table instead of List

Fix typo, convertor -> converter

.github/workflows/test.yml

@@ -0,0 +1,23 @@
+on: [push, pull_request]
+name: Test
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        go-version: [1.23.x]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    env:
+      CGO_ENABLED: 0
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    - name: Install Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Test
+      run: go test
+      env:
+        CGO_ENABLED: 1

.gitignore

@@ -0,0 +1,5 @@
+cmd/cbconvert-gui/cbconvert-gui
+cmd/cbconvert/cbconvert
+
+.idea
+.vscode

README.md

@@ -1,156 +1,201 @@
-CBconvert
+## CBconvert
-=========
 
-Introduction
+### Introduction
-------------
 
 CBconvert is a [Comic Book](http://en.wikipedia.org/wiki/Comic_Book_Archive_file) converter.
-It allows you to convert individual comics or bulk convert comics to different formats to fit your various devices.
 
-Features
+It can convert comics to different formats to fit your various devices.
---------
 
- - reads RAR, ZIP, 7Z, GZ, BZ2, CBR, CBZ, CB7, CBT, PDF, EPUB, XPS and plain directory
+<img src="cmd/cbconvert-gui/screenshots/linux-01.jpg" width="700" alt="screenshot" />
- - always saves processed comic in CBZ (ZIP) archive format
- - images can be converted to JPEG, PNG, GIF, TIFF or 4-Bit BMP (16 colors) file format
- - choose resize algorithm (NearestNeighbor, Box, Linear, MitchellNetravali, CatmullRom, Gaussian, Lanczos)
- - rotate, flip, adjust brightness/contrast or grayscale images
- - export covers from comics
- - create thumbnails from covers by [freedesktop](http://www.freedesktop.org/wiki/) specification
 
-Download
+See more [screenshots](https://github.com/gen2brain/cbconvert/blob/master/cmd/cbconvert-gui/screenshots/).
---------
 
- - [Windows binary](https://github.com/gen2brain/cbconvert/releases/download/0.4.0/cbconvert-0.4.0.zip)
+### Features
 
- - [Linux 64bit binary](https://github.com/gen2brain/cbconvert/releases/download/0.4.0/cbconvert-0.4.0.tar.gz)
+* reads CBR (RAR), CBZ (ZIP), CB7 (7Z), CBT (TAR), PDF, XPS, EPUB, MOBI, DOCX, PPTX and plain directory
- - [Linux 64bit static binary](https://github.com/gen2brain/cbconvert/releases/download/0.4.0/cbconvert-0.4.0-static.tar.gz)
+* saves processed files in ZIP archive format or TAR
+* images can be converted to JPEG, PNG, TIFF, WEBP, AVIF, JXL, or 4-Bit BMP (16 colors) image format
+* rotate, adjust brightness/contrast or grayscale images
+* resize filters (NearestNeighbor, Box, Linear, MitchellNetravali, CatmullRom, Gaussian, Lanczos)
+* export covers from comics
+* create thumbnails from covers by [FreeDesktop](http://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html) specification
 
-Using
+### Download
------
 
-    usage: cbconvert [<flags>] <command> [<args> ...]
+Download the latest binaries from the [releases](https://github.com/gen2brain/cbconvert/releases).
 
-    Comic Book convert tool.
+Linux Flatpak is available at [Flathub](https://flathub.org/apps/io.github.gen2brain.cbconvert).
 
-    Flags:
+### Compile
-      --help           Show context-sensitive help (also try --help-long and --help-man).
-      --version        Show application version.
-      --outdir="."     Output directory
-      --size=0         Process only files larger then size (in MB)
-      --recursive      Process subdirectories recursively
-      --quiet          Hide console output
 
-    Args:
+You must have `CGO_ENABLED=1`. Note that `Go` will disable cgo when cross-compiling.
-      <args>  filename or directory
 
-    Commands:
+Install to `GOBIN` (you can point `GOBIN` to e.g. `/usr/local/bin` or `~/.local/bin`):
-      help [<command>...]
+
-        Show help.
+`go install github.com/gen2brain/cbconvert/cmd/cbconvert@latest`
+
+For GUI app, check [IUP](https://github.com/gen2brain/iup-go) requirements, and then install:
+
+`go install github.com/gen2brain/cbconvert/cmd/cbconvert-gui@latest`
+
+### Build tags
+
+* `extlib` - use external `libmupdf` and `libunarr` libraries
+* `pkgconfig` - enable pkg-config (used with `extlib`)
+
+### Using cbconvert in file managers to generate FreeDesktop thumbnails
+
+Copy/install `cbconvert` cli binary to your `PATH`, create file `~/.local/share/thumbnailers/cbconvert.thumbnailer`
+and paste contents from [thumbnailer](https://github.com/gen2brain/cbconvert/tree/master/cmd/cbconvert-gui/dist/linux/io.github.gen2brain.cbconvert.thumbnailer).
+
+This is what it looks like in the `PCManFM` file manager:
+
+<img src="cmd/cbconvert-gui/screenshots/thumbnails.jpg" width="700" alt="thumbnails" />
 
 
-      convert [<flags>] <args>...
+### Using command line app
-        Convert archive or document (default command)
 
-        --width=0        Image width
+```
-        --height=0       Image height
+Usage: cbconvert <command> [<flags>] [file1 dir1 ... fileOrDirN]
-        --fit            Best fit for required width and height
-        --quality=75     JPEG image quality
-        --filter=2       0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
-        --png            Encode images to PNG instead of JPEG
-        --bmp            Encode images to 4-Bit BMP (16 colors) instead of JPEG
-        --gif            Encode images to GIF instead of JPEG
-        --tiff           Encode images to TIFF instead of JPEG
-        --rgb            Convert images that have RGB colorspace (use --no-rgb if you only want to convert grayscale images)
-        --nonimage       Leave non image files in archive (use --no-nonimage to remove non image files from archive)
-        --grayscale      Convert images to grayscale (monochromatic)
-        --rotate=0       Rotate images, valid values are 0, 90, 180, 270
-        --flip="none"    Flip images, valid values are none, horizontal, vertical
-        --brightness=0   Adjust brightness of the images, must be in range (-100, 100)
-        --contrast=0     Adjust contrast of the images, must be in range (-100, 100)
-        --suffix=SUFFIX  Add suffix to file basename
 
-      cover [<flags>] <args>...
-        Extract cover
 
-        --width=0     Image width
+Commands:
-        --height=0    Image height
-        --fit         Best fit for required width and height
-        --quality=75  JPEG image quality
-        --filter=2    0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
 
-      thumbnail [<flags>] <args>...
+  convert
-        Extract cover thumbnail (freedesktop spec.)
+    	Convert archive or document
 
-        --width=0   Image width
+    --width
-        --height=0  Image height
+    	Image width (default "0")
-        --fit       Best fit for required width and height
+    --height
-        --filter=2  0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
+    	Image height (default "0")
+    --fit
+    	Best fit for required width and height (default "false")
+    --format
+    	Image format, valid values are jpeg, png, tiff, bmp, webp, avif, jxl (default "jpeg")
+    --archive
+    	Archive format, valid values are zip, tar (default "zip")
+    --quality
+    	Image quality (default "75")
+    --filter
+    	0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos (default "2")
+    --no-cover
+    	Do not convert the cover image (default "false")
+    --no-rgb
+    	Do not convert images that have RGB colorspace (default "false")
+    --no-nonimage
+    	Remove non-image files from the archive (default "false")
+    --no-convert
+    	Do not transform or convert images (default "false")
+    --grayscale
+    	Convert images to grayscale (monochromatic) (default "false")
+    --rotate
+    	Rotate images, valid values are 0, 90, 180, 270 (default "0")
+    --brightness
+    	Adjust the brightness of the images, must be in the range (-100, 100) (default "0")
+    --contrast
+    	Adjust the contrast of the images, must be in the range (-100, 100) (default "0")
+    --suffix
+    	Add suffix to file basename (default "")
+    --outdir
+    	Output directory (default ".")
+    --size
+    	Process only files larger than size (in MB) (default "0")
+    --recursive
+    	Process subdirectories recursively (default "false")
+    --quiet
+    	Hide console output (default "false")
 
-[man page](https://en.wikipedia.org/wiki/Man_page) is also available:
+  cover
-    
+    	Extract cover
-    cbconvert --help-man | man /dev/stdin
 
-Examples
+    --width
---------
+    	Image width (default "0")
+    --height
+    	Image height (default "0")
+    --fit
+    	Best fit for required width and height (default "false")
+    --format
+    	Image format, valid values are jpeg, png, tiff, bmp, webp, avif (default "jpeg")
+    --quality
+    	Image quality (default "75")
+    --filter
+    	0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos (default "2")
+    --outdir
+    	Output directory (default ".")
+    --size
+    	Process only files larger than size (in MB) (default "0")
+    --recursive
+    	Process subdirectories recursively (default "false")
+    --quiet
+    	Hide console output (default "false")
 
-Rescale images to 1200px for all supported files found in directory with size larger then 60MB:
+  thumbnail
+    	Extract cover thumbnail (freedesktop spec.)
 
-    cbconvert --recursive --width 1200 --size 60 /media/comics/Thorgal/
+    --width
+    	Image width (default "0")
+    --height
+    	Image height (default "0")
+    --fit
+    	Best fit for required width and height (default "false")
+    --filter
+    	0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos (default "2")
+    --outdir
+    	Output directory (default ".")
+    --outfile
+    	Output file (default "")
+    --size
+    	Process only files larger than size (in MB) (default "0")
+    --recursive
+    	Process subdirectories recursively (default "false")
+    --quiet
+    	Hide console output (default "false")
 
-Convert all images in pdf to 4bit BMP image and save result in ~/comics directory:
+  meta
+    	CBZ metadata
 
-    cbconvert --bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.pdf
+    --cover
+    	Print cover name (default "false")
+    --comment
+    	Print zip comment (default "false")
+    --comment-body
+    	Set zip comment (default "")
+    --file-add
+    	Add file to archive (default "")
+    --file-remove
+    	Remove file from archive (glob pattern, i.e. *.xml) (default "")
 
-[BMP](http://en.wikipedia.org/wiki/BMP_file_format) format is very good choice for black&white pages. Archive size can be smaller 2-3x and file will be readable by comic readers.
+  version
+    	Print version
+```
 
-Generate thumbnails by freedesktop specification in ~/.thumbnails/normal directory with width 512:
+### Examples
 
-    cbconvert thumbnail --width 512 --outdir ~/.thumbnails/normal /media/comics/GrooTheWanderer/
+* Rescale images to 1200px for all supported files found in a directory with a size larger than 60MB:
 
-Extract covers to ~/covers dir for all supported files found in directory, Lanczos algorithm is used for resizing:
+`cbconvert --recursive --width 1200 --size 60 /media/comics/Thorgal/`
 
-    cbconvert cover --outdir ~/covers --filter=7 /media/comics/GrooTheWanderer/
+* Convert all images in pdf to 4bit BMP images and save the result in ~/comics directory:
 
-Compile
+`cbconvert --format bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.pdf`
--------
 
-Install imagemagick dev packages:
+[BMP](http://en.wikipedia.org/wiki/BMP_file_format) format is a very good choice for black&white pages. Archive size can be smaller 2-3x and the file will be readable by comic readers.
 
-    apt-get install libmagickcore-dev libmagickwand-dev
+* Extract covers to ~/covers dir for all supported files found in the directory, Lanczos algorithm is used for resizing:
 
-Compile latest MuPDF:
+`cbconvert cover --outdir ~/covers --filter=7 /media/comics/GrooTheWanderer/`
 
-    git clone git://git.ghostscript.com/mupdf.git && cd mupdf
+* Convert all images to AVIF format:
-    git submodule update --init --recursive
-    curl -L https://gist.githubusercontent.com/gen2brain/7869ac4c6db5933f670f/raw/1619394dc957ae10bcd73c713760993466b4bfea/mupdf-openssl-curl.patch | patch -p1
-    sed -e "1iHAVE_X11 = no" -e "1iWANT_OPENSSL = no" -e "1iWANT_CURL = no" -i Makerules
-    HAVE_X11=no HAVE_GLFW=no HAVE_GLUT=no WANT_OPENSSL=no WANT_CURL=no HAVE_MUJS=yes HAVE_JSCORE=no HAVE_V8=no make && make install
 
-Compile unarr library:
+`cbconvert --format avif --quality 50 --width 1280 --outdir ~/comics /media/comics/Misc/`
 
-    git clone https://github.com/zeniko/unarr && cd unarr
+### Quality settings
-    mkdir lzma920 && cd lzma920 && curl -L http://www.7-zip.org/a/lzma920.tar.bz2 | tar -xjvp && cd ..
-    curl -L http://zlib.net/zlib-1.2.8.tar.gz | tar -xzvp
-    curl -L http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz | tar -xzvp
-    curl -L https://gist.githubusercontent.com/gen2brain/89fe506863be3fb139e8/raw/8783a7d81e22ad84944d146c5e33beab6dffc641/unarr-makefile.patch | patch -p1
-    CFLAGS="-DHAVE_7Z -DHAVE_ZLIB -DHAVE_BZIP2 -I./lzma920/C -I./zlib-1.2.8 -I./bzip2-1.0.6" make
-    cp build/debug/libunarr.a /usr/lib64/ && cp unarr.h /usr/include
 
-Install dependencies:
+This table maps quality settings for JPEG to the respective AVIF and WEBP quality settings:
 
-    go get github.com/cheggaaa/pb
+|              |    |    |    |    |
-    go get github.com/disintegration/imaging
+|--------------|----|----|----|----|
-    go get github.com/gen2brain/go-fitz
+| JPEG quality | 50 | 60 | 70 | 80 |
-    go get github.com/gen2brain/go-unarr
+| AVIF quality | 48 | 51 | 56 | 64 |
-    go get github.com/gographics/imagick/imagick
+| WEBP quality | 55 | 64 | 72 | 82 |
-    go get github.com/hotei/bmp
-    go get github.com/skarademir/naturalsort
-    go get golang.org/x/image/tiff
-    go get golang.org/x/image/webp    
-    go get gopkg.in/alecthomas/kingpin.v2
 
-Install go package:
-
-    go get github.com/gen2brain/cbconvert
-    go install github.com/gen2brain/cbconvert

cbconvert_archive.go

@@ -0,0 +1,517 @@
+package cbconvert
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"context"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/mholt/archives"
+)
+
+// archiveSave saves workdir to CBZ archive.
+func (c *Converter) archiveSave(fileName string) error {
+	if c.Opts.Archive == "zip" {
+		return c.archiveSaveZip(fileName)
+	} else if c.Opts.Archive == "tar" {
+		return c.archiveSaveTar(fileName)
+	}
+
+	return nil
+}
+
+// archiveSaveZip saves workdir to CBZ archive.
+func (c *Converter) archiveSaveZip(fileName string) error {
+	if c.OnCompress != nil {
+		c.OnCompress()
+	}
+
+	var zipName string
+	if c.Opts.Recursive {
+		fDir := strings.Split(filepath.Dir(fileName), string(os.PathSeparator))[1:]
+		err := os.MkdirAll(filepath.Join(c.Opts.OutDir, filepath.Join(fDir...)), 0755)
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+
+		zipName = filepath.Join(c.Opts.OutDir, filepath.Join(fDir...), fmt.Sprintf("%s%s.cbz", baseNoExt(fileName), c.Opts.Suffix))
+	} else {
+		zipName = filepath.Join(c.Opts.OutDir, fmt.Sprintf("%s%s.cbz", baseNoExt(fileName), c.Opts.Suffix))
+	}
+
+	zipFile, err := os.Create(zipName)
+	if err != nil {
+		return fmt.Errorf("archiveSaveZip: %w", err)
+	}
+
+	z := zip.NewWriter(zipFile)
+
+	files, err := os.ReadDir(c.Workdir)
+	if err != nil {
+		return fmt.Errorf("archiveSaveZip: %w", err)
+	}
+
+	for _, file := range files {
+		r, err := os.ReadFile(filepath.Join(c.Workdir, file.Name()))
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+
+		info, err := file.Info()
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+
+		zipInfo, err := zip.FileInfoHeader(info)
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+
+		zipInfo.Method = zip.Deflate
+		w, err := z.CreateHeader(zipInfo)
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+
+		_, err = w.Write(r)
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+	}
+
+	if err = z.Close(); err != nil {
+		return fmt.Errorf("archiveSaveZip: %w", err)
+	}
+
+	if err = zipFile.Close(); err != nil {
+		return fmt.Errorf("archiveSaveZip: %w", err)
+	}
+
+	err = os.RemoveAll(c.Workdir)
+	if err != nil {
+		return fmt.Errorf("archiveSaveZip: %w", err)
+	}
+
+	return nil
+}
+
+// archiveSaveTar saves workdir to CBT archive.
+func (c *Converter) archiveSaveTar(fileName string) error {
+	if c.OnCompress != nil {
+		c.OnCompress()
+	}
+
+	var tarName string
+	if c.Opts.Recursive {
+		fDir := strings.Split(filepath.Dir(fileName), string(os.PathSeparator))[1:]
+		err := os.MkdirAll(filepath.Join(c.Opts.OutDir, filepath.Join(fDir...)), 0755)
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+
+		tarName = filepath.Join(c.Opts.OutDir, filepath.Join(fDir...), fmt.Sprintf("%s%s.cbt", baseNoExt(fileName), c.Opts.Suffix))
+	} else {
+		tarName = filepath.Join(c.Opts.OutDir, fmt.Sprintf("%s%s.cbt", baseNoExt(fileName), c.Opts.Suffix))
+	}
+
+	tarFile, err := os.Create(tarName)
+	if err != nil {
+		return fmt.Errorf("archiveSaveTar: %w", err)
+	}
+
+	tw := tar.NewWriter(tarFile)
+
+	files, err := os.ReadDir(c.Workdir)
+	if err != nil {
+		return fmt.Errorf("archiveSaveTar: %w", err)
+	}
+
+	for _, file := range files {
+		r, err := os.ReadFile(filepath.Join(c.Workdir, file.Name()))
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+
+		info, err := file.Info()
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+
+		header, err := tar.FileInfoHeader(info, info.Name())
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+
+		err = tw.WriteHeader(header)
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+
+		_, err = tw.Write(r)
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+	}
+
+	if err = tw.Close(); err != nil {
+		return fmt.Errorf("archiveSaveTar: %w", err)
+	}
+
+	if err = tarFile.Close(); err != nil {
+		return fmt.Errorf("archiveSaveTar: %w", err)
+	}
+
+	err = os.RemoveAll(c.Workdir)
+	if err != nil {
+		return fmt.Errorf("archiveSaveTar: %w", err)
+	}
+
+	return nil
+}
+
+// archiveOpen identifies the archive and returns its extractor and a reader positioned at the start.
+func archiveOpen(ctx context.Context, fileName string) (io.ReadCloser, archives.Extractor, io.Reader, error) {
+	file, err := os.Open(fileName)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	format, input, err := archives.Identify(ctx, fileName, file)
+	if err != nil {
+		file.Close()
+		return nil, nil, nil, err
+	}
+
+	ex, ok := format.(archives.Extractor)
+	if !ok {
+		file.Close()
+		return nil, nil, nil, fmt.Errorf("%s: unsupported archive format", fileName)
+	}
+
+	return file, ex, input, nil
+}
+
+// FileType returns the detected archive container, document extension, or "DIR".
+func FileType(path string) string {
+	if isArchive(path) {
+		file, err := os.Open(path)
+		if err == nil {
+			defer file.Close()
+
+			format, _, err := archives.Identify(context.Background(), path, file)
+			if err == nil {
+				return strings.ToUpper(strings.TrimPrefix(format.Extension(), "."))
+			}
+		}
+	}
+
+	if info, err := os.Stat(path); err == nil && info.IsDir() {
+		return "DIR"
+	}
+
+	return strings.ToUpper(strings.TrimPrefix(filepath.Ext(path), "."))
+}
+
+// archiveList lists contents of archive.
+func (c *Converter) archiveList(fileName string) ([]string, error) {
+	var contents []string
+
+	ctx := context.Background()
+
+	file, ex, input, err := archiveOpen(ctx, fileName)
+	if err != nil {
+		return contents, fmt.Errorf("archiveList: %w", err)
+	}
+	defer file.Close()
+
+	err = ex.Extract(ctx, input, func(ctx context.Context, f archives.FileInfo) error {
+		if f.IsDir() {
+			return nil
+		}
+
+		contents = append(contents, f.NameInArchive)
+
+		return nil
+	})
+	if err != nil {
+		return contents, fmt.Errorf("archiveList: %w", err)
+	}
+
+	return contents, nil
+}
+
+// archiveFile returns the contents of a single named file from the archive.
+func (c *Converter) archiveFile(fileName, name string) ([]byte, error) {
+	var data []byte
+
+	ctx := context.Background()
+
+	file, ex, input, err := archiveOpen(ctx, fileName)
+	if err != nil {
+		return nil, fmt.Errorf("archiveFile: %w", err)
+	}
+	defer file.Close()
+
+	err = ex.Extract(ctx, input, func(ctx context.Context, f archives.FileInfo) error {
+		if f.NameInArchive != name {
+			return nil
+		}
+
+		rc, err := f.Open()
+		if err != nil {
+			return err
+		}
+		defer rc.Close()
+
+		data, err = io.ReadAll(rc)
+		if err != nil {
+			return err
+		}
+
+		return fs.SkipAll
+	})
+	if err != nil {
+		return nil, fmt.Errorf("archiveFile: %w", err)
+	}
+
+	return data, nil
+}
+
+// archiveComment returns ZIP comment.
+func (c *Converter) archiveComment(fileName string) (string, error) {
+	zr, err := zip.OpenReader(fileName)
+	if err != nil {
+		return "", fmt.Errorf("archiveComment: %w", err)
+	}
+	defer zr.Close()
+
+	return zr.Comment, nil
+}
+
+// archiveSetComment sets ZIP comment.
+func (c *Converter) archiveSetComment(fileName, commentBody string) error {
+	zr, err := zip.OpenReader(fileName)
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+	defer zr.Close()
+
+	zf, err := os.CreateTemp(os.TempDir(), "cbc")
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+
+	tmpName := zf.Name()
+	defer os.Remove(tmpName)
+
+	zw := zip.NewWriter(zf)
+	err = zw.SetComment(commentBody)
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+
+	for _, item := range zr.File {
+		ir, err := item.OpenRaw()
+		if err != nil {
+			return fmt.Errorf("archiveSetComment: %w", err)
+		}
+
+		item := item
+
+		it, err := zw.CreateRaw(&item.FileHeader)
+		if err != nil {
+			return fmt.Errorf("archiveSetComment: %w", err)
+		}
+
+		_, err = io.Copy(it, ir)
+		if err != nil {
+			return fmt.Errorf("archiveSetComment: %w", err)
+		}
+	}
+
+	err = zw.Close()
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+
+	err = zf.Close()
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+
+	data, err := os.ReadFile(tmpName)
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+
+	err = os.WriteFile(fileName, data, 0644)
+	if err != nil {
+		return fmt.Errorf("archiveSetComment: %w", err)
+	}
+
+	return nil
+}
+
+// archiveFileAdd adds a file to the archive.
+func (c *Converter) archiveFileAdd(fileName, newFileName string) error {
+	zr, err := zip.OpenReader(fileName)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+	defer zr.Close()
+
+	zf, err := os.CreateTemp(os.TempDir(), "cbc")
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	tmpName := zf.Name()
+	defer os.Remove(tmpName)
+
+	zw := zip.NewWriter(zf)
+
+	for _, item := range zr.File {
+		if item.Name == newFileName {
+			continue
+		}
+
+		ir, err := item.OpenRaw()
+		if err != nil {
+			return fmt.Errorf("archiveFileAdd: %w", err)
+		}
+
+		item := item
+
+		it, err := zw.CreateRaw(&item.FileHeader)
+		if err != nil {
+			return fmt.Errorf("archiveFileAdd: %w", err)
+		}
+
+		_, err = io.Copy(it, ir)
+		if err != nil {
+			return fmt.Errorf("archiveFileAdd: %w", err)
+		}
+	}
+
+	info, err := os.Stat(newFileName)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	newData, err := os.ReadFile(newFileName)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	zipInfo, err := zip.FileInfoHeader(info)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	zipInfo.Method = zip.Deflate
+	w, err := zw.CreateHeader(zipInfo)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	_, err = w.Write(newData)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	err = zw.Close()
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	err = zf.Close()
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	data, err := os.ReadFile(tmpName)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	err = os.WriteFile(fileName, data, 0644)
+	if err != nil {
+		return fmt.Errorf("archiveFileAdd: %w", err)
+	}
+
+	return nil
+}
+
+// archiveFileRemove removes files from archive.
+func (c *Converter) archiveFileRemove(fileName, pattern string) error {
+	zr, err := zip.OpenReader(fileName)
+	if err != nil {
+		return fmt.Errorf("archiveFileRemove: %w", err)
+	}
+	defer zr.Close()
+
+	zf, err := os.CreateTemp(os.TempDir(), "cbc")
+	if err != nil {
+		return fmt.Errorf("archiveFileRemove: %w", err)
+	}
+
+	tmpName := zf.Name()
+	defer os.Remove(tmpName)
+
+	zw := zip.NewWriter(zf)
+
+	for _, item := range zr.File {
+		matched, err := filepath.Match(pattern, item.Name)
+		if err != nil {
+			return fmt.Errorf("archiveFileRemove: %w", err)
+		}
+
+		if matched {
+			continue
+		}
+
+		ir, err := item.OpenRaw()
+		if err != nil {
+			return fmt.Errorf("archiveFileRemove: %w", err)
+		}
+
+		item := item
+
+		it, err := zw.CreateRaw(&item.FileHeader)
+		if err != nil {
+			return fmt.Errorf("archiveFileRemove: %w", err)
+		}
+
+		_, err = io.Copy(it, ir)
+		if err != nil {
+			return fmt.Errorf("archiveFileRemove: %w", err)
+		}
+	}
+
+	err = zw.Close()
+	if err != nil {
+		return fmt.Errorf("archiveFileRemove: %w", err)
+	}
+
+	err = zf.Close()
+	if err != nil {
+		return fmt.Errorf("archiveFileRemove: %w", err)
+	}
+
+	data, err := os.ReadFile(tmpName)
+	if err != nil {
+		return fmt.Errorf("archiveFileRemove: %w", err)
+	}
+
+	err = os.WriteFile(fileName, data, 0644)
+	if err != nil {
+		return fmt.Errorf("archiveFileRemove: %w", err)
+	}
+
+	return nil
+}

cbconvert_convert.go

@@ -0,0 +1,429 @@
+package cbconvert
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"image"
+	"image/png"
+	"io"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync/atomic"
+
+	"github.com/gen2brain/avif"
+	"github.com/gen2brain/go-fitz"
+	"github.com/gen2brain/jpegli"
+	"github.com/gen2brain/jpegxl"
+	"github.com/gen2brain/webp"
+	"github.com/jsummers/gobmp"
+	"github.com/mholt/archives"
+	"golang.org/x/image/tiff"
+	"golang.org/x/sync/errgroup"
+)
+
+// convertDocument converts PDF/EPUB document to CBZ.
+func (c *Converter) convertDocument(ctx context.Context, fileName string) error {
+	var err error
+
+	c.Workdir, err = os.MkdirTemp(os.TempDir(), "cbc")
+	if err != nil {
+		return fmt.Errorf("convertDocument: %w", err)
+	}
+
+	doc, err := fitz.New(fileName)
+	if err != nil {
+		return fmt.Errorf("convertDocument: %w", err)
+	}
+
+	defer doc.Close()
+
+	c.Ncontents = doc.NumPage()
+	c.CurrContent = 0
+
+	if c.OnStart != nil {
+		c.OnStart()
+	}
+
+	eg, ctx := errgroup.WithContext(ctx)
+	eg.SetLimit(runtime.NumCPU() + 1)
+
+	for n := 0; n < c.Ncontents; n++ {
+		if ctx.Err() != nil {
+			return fmt.Errorf("convertDocument: %w", ctx.Err())
+		}
+
+		img, err := doc.Image(n)
+		if err != nil {
+			return fmt.Errorf("convertDocument: %w", err)
+		}
+
+		if img != nil {
+			eg.Go(func() error {
+				return c.imageConvert(ctx, img, n, "")
+			})
+		}
+	}
+
+	err = eg.Wait()
+	if err != nil {
+		return fmt.Errorf("convertDocument: %w", err)
+	}
+
+	return nil
+}
+
+// convertArchive converts archive to CBZ.
+func (c *Converter) convertArchive(ctx context.Context, fileName string) error {
+	var err error
+
+	c.Workdir, err = os.MkdirTemp(os.TempDir(), "cbc")
+	if err != nil {
+		return fmt.Errorf("convertArchive: %w", err)
+	}
+
+	contents, err := c.archiveList(fileName)
+	if err != nil {
+		return fmt.Errorf("convertArchive: %w", err)
+	}
+
+	images := imagesFromSlice(contents)
+
+	c.Ncontents = len(images)
+	c.CurrContent = 0
+
+	if c.OnStart != nil {
+		c.OnStart()
+	}
+
+	cover := c.coverName(images)
+
+	eg, ctx := errgroup.WithContext(ctx)
+	eg.SetLimit(runtime.NumCPU() + 1)
+
+	file, ex, input, err := archiveOpen(ctx, fileName)
+	if err != nil {
+		return fmt.Errorf("convertArchive: %w", err)
+	}
+	defer file.Close()
+
+	err = ex.Extract(ctx, input, func(ctx context.Context, f archives.FileInfo) error {
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+
+		if f.IsDir() {
+			return nil
+		}
+
+		pathName := f.NameInArchive
+
+		rc, err := f.Open()
+		if err != nil {
+			return fmt.Errorf("convertArchive: %w", err)
+		}
+
+		data, err := io.ReadAll(rc)
+		if err != nil {
+			rc.Close()
+			return fmt.Errorf("convertArchive: %w", err)
+		}
+
+		if err = rc.Close(); err != nil {
+			return fmt.Errorf("convertArchive: %w", err)
+		}
+
+		if isImage(pathName) {
+			if c.Opts.NoConvert {
+				if err = copyFile(bytes.NewReader(data), filepath.Join(c.Workdir, filepath.Base(pathName))); err != nil {
+					return fmt.Errorf("convertArchive: %w", err)
+				}
+
+				return nil
+			}
+
+			if cover == pathName && c.Opts.NoCover {
+				if err = copyFile(bytes.NewReader(data), filepath.Join(c.Workdir, filepath.Base(pathName))); err != nil {
+					return fmt.Errorf("convertArchive: %w", err)
+				}
+
+				return nil
+			}
+
+			var img image.Image
+			img, err = c.imageDecode(bytes.NewReader(data))
+			if err != nil {
+				return fmt.Errorf("convertArchive: %w", err)
+			}
+
+			if c.Opts.NoRGB && !isGrayScale(img) {
+				if err = copyFile(bytes.NewReader(data), filepath.Join(c.Workdir, filepath.Base(pathName))); err != nil {
+					return fmt.Errorf("convertArchive: %w", err)
+				}
+
+				return nil
+			}
+
+			if img != nil {
+				eg.Go(func() error {
+					return c.imageConvert(ctx, img, 0, pathName)
+				})
+			}
+		} else {
+			if filepath.Ext(pathName) == ".DS_Store" || strings.Contains(pathName, "__MACOSX") {
+				return nil
+			}
+
+			if !c.Opts.NoNonImage {
+				if err = copyFile(bytes.NewReader(data), filepath.Join(c.Workdir, filepath.Base(pathName))); err != nil {
+					return fmt.Errorf("convertArchive: %w", err)
+				}
+			}
+		}
+
+		return nil
+	})
+
+	if werr := eg.Wait(); werr != nil {
+		return fmt.Errorf("convertArchive: %w", werr)
+	}
+
+	if err != nil {
+		return fmt.Errorf("convertArchive: %w", err)
+	}
+
+	return nil
+}
+
+// convertDirectory converts directory to CBZ.
+func (c *Converter) convertDirectory(ctx context.Context, dirPath string) error {
+	var err error
+
+	c.Workdir, err = os.MkdirTemp(os.TempDir(), "cbc")
+	if err != nil {
+		return fmt.Errorf("convertDirectory: %w", err)
+	}
+
+	contents, err := imagesFromPath(dirPath)
+	if err != nil {
+		return fmt.Errorf("convertDirectory: %w", err)
+	}
+
+	images := imagesFromSlice(contents)
+	c.Ncontents = len(images)
+	c.CurrContent = 0
+
+	if c.OnStart != nil {
+		c.OnStart()
+	}
+
+	eg, ctx := errgroup.WithContext(ctx)
+	eg.SetLimit(runtime.NumCPU() + 1)
+
+	for index, img := range contents {
+		if ctx.Err() != nil {
+			return fmt.Errorf("convertDirectory: %w", ctx.Err())
+		}
+
+		file, err := os.Open(img)
+		if err != nil {
+			return fmt.Errorf("convertDirectory: %w", err)
+		}
+
+		if isNonImage(img) && !c.Opts.NoNonImage {
+			if err = copyFile(file, filepath.Join(c.Workdir, filepath.Base(img))); err != nil {
+				return fmt.Errorf("convertDirectory: %w", err)
+			}
+
+			if err = file.Close(); err != nil {
+				return fmt.Errorf("convertDirectory: %w", err)
+			}
+
+			continue
+		} else if isImage(img) {
+			if c.Opts.NoConvert {
+				if err = copyFile(file, filepath.Join(c.Workdir, filepath.Base(img))); err != nil {
+					return fmt.Errorf("convertDirectory: %w", err)
+				}
+
+				if err = file.Close(); err != nil {
+					return fmt.Errorf("convertDirectory: %w", err)
+				}
+
+				continue
+			}
+
+			var i image.Image
+			i, err = c.imageDecode(file)
+			if err != nil {
+				return fmt.Errorf("convertDirectory: %w", err)
+			}
+
+			if c.Opts.NoRGB && !isGrayScale(i) {
+				if err = copyFile(file, filepath.Join(c.Workdir, filepath.Base(img))); err != nil {
+					return fmt.Errorf("convertDirectory: %w", err)
+				}
+
+				if err = file.Close(); err != nil {
+					return fmt.Errorf("convertDirectory: %w", err)
+				}
+
+				continue
+			}
+
+			if err = file.Close(); err != nil {
+				return fmt.Errorf("convertDirectory: %w", err)
+			}
+
+			if i != nil {
+				eg.Go(func() error {
+					return c.imageConvert(ctx, i, index, img)
+				})
+			}
+		}
+	}
+
+	err = eg.Wait()
+	if err != nil {
+		return fmt.Errorf("convertDirectory: %w", err)
+	}
+
+	return nil
+}
+
+// imageConvert converts image.Image.
+func (c *Converter) imageConvert(ctx context.Context, img image.Image, index int, pathName string) error {
+	err := ctx.Err()
+	if err != nil {
+		return fmt.Errorf("imageConvert: %w", err)
+	}
+
+	atomic.AddInt32(&c.CurrContent, 1)
+	if c.OnProgress != nil {
+		c.OnProgress()
+	}
+
+	ext := c.Opts.Format
+	if ext == "jpeg" {
+		ext = "jpg"
+	}
+
+	var fileName string
+	if pathName != "" {
+		fileName = filepath.Join(c.Workdir, fmt.Sprintf("%s.%s", baseNoExt(pathName), ext))
+	} else {
+		fileName = filepath.Join(c.Workdir, fmt.Sprintf("%03d.%s", index, ext))
+	}
+
+	img = c.imageTransform(img)
+
+	w, err := os.Create(fileName)
+	if err != nil {
+		return fmt.Errorf("imageConvert: %w", err)
+	}
+	defer w.Close()
+
+	if err := c.imageEncode(img, w); err != nil {
+		return fmt.Errorf("imageConvert: %w", err)
+	}
+
+	return nil
+}
+
+// imageTransform transforms image (resize, rotate, brightness, contrast).
+func (c *Converter) imageTransform(img image.Image) image.Image {
+	var i = img
+
+	if c.Opts.Width > 0 || c.Opts.Height > 0 {
+		if c.Opts.Fit {
+			i = fit(i, c.Opts.Width, c.Opts.Height, filters[c.Opts.Filter])
+		} else {
+			i = resize(i, c.Opts.Width, c.Opts.Height, filters[c.Opts.Filter])
+		}
+	}
+
+	if c.Opts.Rotate > 0 {
+		switch c.Opts.Rotate {
+		case 90:
+			i = rotate(i, 90)
+		case 180:
+			i = rotate(i, 180)
+		case 270:
+			i = rotate(i, 270)
+		}
+	}
+
+	if c.Opts.Brightness != 0 {
+		i = brightness(i, float64(c.Opts.Brightness))
+	}
+
+	if c.Opts.Contrast != 0 {
+		i = contrast(i, float64(c.Opts.Contrast))
+	}
+
+	if c.Opts.Grayscale {
+		i = imageToGray(i)
+	}
+
+	return i
+}
+
+// imageDecode decodes image from reader.
+func (c *Converter) imageDecode(reader io.Reader) (image.Image, error) {
+	img, _, err := image.Decode(reader)
+	if err != nil {
+		return img, fmt.Errorf("imageDecode: %w", err)
+	}
+
+	return img, nil
+}
+
+// imageEncode encodes image to file.
+func (c *Converter) imageEncode(img image.Image, w io.Writer) error {
+	var err error
+
+	switch c.Opts.Format {
+	case "png":
+		err = png.Encode(w, img)
+	case "tiff":
+		err = tiff.Encode(w, img, &tiff.Options{Compression: tiff.Uncompressed})
+	case "jpeg":
+		opts := &jpegli.EncodingOptions{}
+		opts.Quality = c.Opts.Quality
+		opts.ChromaSubsampling = image.YCbCrSubsampleRatio420
+		opts.ProgressiveLevel = 2
+		opts.AdaptiveQuantization = true
+		opts.DCTMethod = jpegli.DefaultDCTMethod
+		err = jpegli.Encode(w, img, opts)
+	case "webp":
+		method := webp.DefaultMethod
+		if c.Opts.Effort >= 0 {
+			method = min(max(c.Opts.Effort, 0), 6)
+		}
+		err = webp.Encode(w, img, webp.Options{Quality: c.Opts.Quality, Method: method, Lossless: c.Opts.Lossless})
+	case "avif":
+		speed := avif.DefaultSpeed
+		if c.Opts.Effort >= 0 {
+			speed = min(max(c.Opts.Effort, 0), 10)
+		}
+		err = avif.Encode(w, img, avif.Options{Quality: c.Opts.Quality, Speed: speed, Lossless: c.Opts.Lossless})
+	case "jxl":
+		effort := jpegxl.DefaultEffort
+		if c.Opts.Effort >= 0 {
+			effort = min(max(c.Opts.Effort, 1), 10)
+		}
+		err = jpegxl.Encode(w, img, jpegxl.Options{Quality: c.Opts.Quality, Effort: effort, Lossless: c.Opts.Lossless})
+	case "bmp":
+		opts := &gobmp.EncoderOptions{}
+		opts.SupportTransparency(false)
+		err = gobmp.EncodeWithOptions(w, imageToPaletted(img), opts)
+	}
+
+	if err != nil {
+		return fmt.Errorf("imageEncode: %w", err)
+	}
+
+	return nil
+}

cbconvert_cover.go

@@ -0,0 +1,142 @@
+package cbconvert
+
+import (
+	"bytes"
+	"fmt"
+	"image"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"github.com/fvbommel/sortorder"
+	"github.com/gen2brain/go-fitz"
+)
+
+// coverArchive extracts cover from archive.
+func (c *Converter) coverArchive(fileName string) (image.Image, error) {
+	var images []string
+
+	contents, err := c.archiveList(fileName)
+	if err != nil {
+		return nil, fmt.Errorf("coverArchive: %w", err)
+	}
+
+	for _, ct := range contents {
+		if isImage(ct) {
+			images = append(images, ct)
+		}
+	}
+
+	cover := c.coverName(images)
+
+	data, err := c.archiveFile(fileName, cover)
+	if err != nil {
+		return nil, fmt.Errorf("coverArchive: %w", err)
+	}
+
+	var img image.Image
+	img, err = c.imageDecode(bytes.NewReader(data))
+	if err != nil {
+		return nil, fmt.Errorf("coverArchive: %w", err)
+	}
+
+	return img, nil
+}
+
+// coverDocument extracts cover from document.
+func (c *Converter) coverDocument(fileName string) (image.Image, error) {
+	doc, err := fitz.New(fileName)
+	if err != nil {
+		return nil, fmt.Errorf("coverDocument: %w", err)
+	}
+	defer doc.Close()
+
+	img, err := doc.Image(0)
+	if err != nil {
+		return nil, fmt.Errorf("coverDocument: %w", err)
+	}
+
+	return img, nil
+}
+
+// coverDirectory extracts cover from directory.
+func (c *Converter) coverDirectory(dir string) (image.Image, error) {
+	contents, err := imagesFromPath(dir)
+	if err != nil {
+		return nil, fmt.Errorf("coverDirectory: %w", err)
+	}
+
+	images := imagesFromSlice(contents)
+	cover := c.coverName(images)
+
+	file, err := os.Open(cover)
+	if err != nil {
+		return nil, fmt.Errorf("coverDirectory: %w", err)
+	}
+	defer file.Close()
+
+	var img image.Image
+	img, err = c.imageDecode(file)
+	if err != nil {
+		return nil, fmt.Errorf("coverDirectory: %w", err)
+	}
+
+	return img, nil
+}
+
+// coverName returns the filename that is the most likely to be the cover.
+func (c *Converter) coverName(images []string) string {
+	if len(images) == 0 {
+		return ""
+	}
+
+	lower := make([]string, 0)
+	for idx, img := range images {
+		img = strings.ToLower(img)
+		lower = append(lower, img)
+		ext := baseNoExt(img)
+
+		if strings.HasPrefix(img, "cover") || strings.HasPrefix(img, "front") ||
+			strings.HasSuffix(ext, "cover") || strings.HasSuffix(ext, "front") {
+			return filepath.ToSlash(images[idx])
+		}
+	}
+
+	sort.Sort(sortorder.Natural(lower))
+	cover := lower[0]
+
+	for idx, img := range images {
+		img = strings.ToLower(img)
+		if img == cover {
+			return filepath.ToSlash(images[idx])
+		}
+	}
+
+	return ""
+}
+
+// coverImage returns cover as image.Image.
+func (c *Converter) coverImage(fileName string, fileInfo os.FileInfo) (image.Image, error) {
+	var err error
+	var cover image.Image
+
+	switch {
+	case fileInfo.IsDir():
+		cover, err = c.coverDirectory(fileName)
+	case isDocument(fileName):
+		cover, err = c.coverDocument(fileName)
+	case isArchive(fileName):
+		cover, err = c.coverArchive(fileName)
+	}
+
+	if c.OnProgress != nil {
+		c.OnProgress()
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("coverImage: %w", err)
+	}
+
+	return cover, nil
+}

cbconvert_func.go

@@ -0,0 +1,145 @@
+package cbconvert
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// imagesFromPath returns list of found image files for given directory.
+func imagesFromPath(path string) ([]string, error) {
+	var images []string
+
+	walkFiles := func(fp string, f os.FileInfo, err error) error {
+		if !f.IsDir() && f.Mode()&os.ModeType == 0 {
+			if f.Size() > 0 && (isImage(fp)) {
+				images = append(images, fp)
+			}
+		}
+
+		return nil
+	}
+
+	f, err := filepath.Abs(path)
+	if err != nil {
+		return images, fmt.Errorf("imagesFromPath: %w", err)
+	}
+
+	stat, err := os.Stat(f)
+	if err != nil {
+		return images, fmt.Errorf("imagesFromPath: %w", err)
+	}
+
+	if !stat.IsDir() && stat.Mode()&os.ModeType == 0 {
+		if isImage(f) {
+			images = append(images, f)
+		}
+	} else {
+		err = filepath.Walk(f, walkFiles)
+		if err != nil {
+			return images, fmt.Errorf("imagesFromPath: %w", err)
+		}
+	}
+
+	return images, nil
+}
+
+// imagesFromSlice returns list of found image files for given slice of files.
+func imagesFromSlice(files []string) []string {
+	var images []string
+
+	for _, f := range files {
+		if isImage(f) {
+			images = append(images, f)
+		}
+	}
+
+	return images
+}
+
+// isArchive checks if a file is archive.
+func isArchive(f string) bool {
+	var types = []string{".rar", ".zip", ".7z", ".tar", ".cbr", ".cbz", ".cb7", ".cbt"}
+	for _, t := range types {
+		if strings.ToLower(filepath.Ext(f)) == t {
+			return true
+		}
+	}
+
+	return false
+}
+
+// isDocument checks if file is document.
+func isDocument(f string) bool {
+	var types = []string{".pdf", ".xps", ".epub", ".mobi", ".docx", ".pptx", ".xlsx"}
+	for _, t := range types {
+		if strings.ToLower(filepath.Ext(f)) == t {
+			return true
+		}
+	}
+
+	return false
+}
+
+// isImage checks if file is image.
+func isImage(f string) bool {
+	var types = []string{".jpg", ".jpeg", ".png", ".gif", ".bmp", ".tiff", ".tif", ".webp", ".avif", ".jxl"}
+	for _, t := range types {
+		if strings.ToLower(filepath.Ext(f)) == t {
+			return true
+		}
+	}
+
+	return false
+}
+
+// isNonImage checks for allowed files in archive.
+func isNonImage(f string) bool {
+	var types = []string{".nfo", ".xml", ".txt"}
+	for _, t := range types {
+		if strings.ToLower(filepath.Ext(f)) == t {
+			return true
+		}
+	}
+
+	return false
+}
+
+// isSize checks size of file.
+func isSize(a, b int64) bool {
+	if a > 0 {
+		if b < int64(a)*(1024*1024) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// baseNoExt returns base name without extension.
+func baseNoExt(filename string) string {
+	return strings.TrimSuffix(filepath.Base(filename), filepath.Ext(filename))
+}
+
+// copyFile copies reader to file.
+func copyFile(reader io.Reader, filename string) error {
+	err := os.MkdirAll(filepath.Dir(filename), 0755)
+	if err != nil {
+		return fmt.Errorf("copyFile: %w", err)
+	}
+
+	file, err := os.Create(filename)
+	if err != nil {
+		return fmt.Errorf("copyFile: %w", err)
+	}
+	defer file.Close()
+
+	_, err = io.Copy(file, reader)
+	if err != nil {
+		return fmt.Errorf("copyFile: %w", err)
+	}
+
+	return nil
+}

cbconvert_image.go

@@ -0,0 +1,163 @@
+package cbconvert
+
+import (
+	"image"
+	"image/color"
+	"image/draw"
+	"math"
+
+	"github.com/anthonynsimon/bild/adjust"
+	"github.com/anthonynsimon/bild/transform"
+)
+
+// Resample filters.
+const (
+	// NearestNeighbor is the fastest resampling filter, no antialiasing.
+	nearestNeighbor int = iota
+	// Box filter (averaging pixels).
+	box
+	// Linear is the bilinear filter, smooth and reasonably fast.
+	linear
+	// MitchellNetravali is a smooth bicubic filter.
+	mitchellNetravali
+	// CatmullRom is a sharp bicubic filter.
+	catmullRom
+	// Gaussian is a blurring filter, which uses gaussian function, useful for noise removal.
+	gaussian
+	// Lanczos is a high-quality resampling filter, it's slower than cubic filters.
+	lanczos
+)
+
+var filters = map[int]transform.ResampleFilter{
+	nearestNeighbor:   transform.NearestNeighbor,
+	box:               transform.Box,
+	linear:            transform.Linear,
+	mitchellNetravali: transform.MitchellNetravali,
+	catmullRom:        transform.CatmullRom,
+	gaussian:          transform.Gaussian,
+	lanczos:           transform.Lanczos,
+}
+
+func resize(img image.Image, width, height int, filter transform.ResampleFilter) *image.RGBA {
+	dstW, dstH := width, height
+
+	srcW := img.Bounds().Dx()
+	srcH := img.Bounds().Dy()
+
+	if dstW == 0 {
+		tmpW := float64(dstH) * float64(srcW) / float64(srcH)
+		dstW = int(math.Max(1.0, math.Floor(tmpW+0.5)))
+	}
+	if dstH == 0 {
+		tmpH := float64(dstW) * float64(srcH) / float64(srcW)
+		dstH = int(math.Max(1.0, math.Floor(tmpH+0.5)))
+	}
+
+	if srcW == dstW && srcH == dstH {
+		return imageToRGBA(img)
+	}
+
+	return transform.Resize(img, dstW, dstH, filter)
+}
+
+func fit(img image.Image, width, height int, filter transform.ResampleFilter) *image.RGBA {
+	maxW, maxH := width, height
+
+	b := img.Bounds()
+	srcW := b.Dx()
+	srcH := b.Dy()
+
+	if srcW <= maxW && srcH <= maxH {
+		return imageToRGBA(img)
+	}
+
+	srcAspectRatio := float64(srcW) / float64(srcH)
+	maxAspectRatio := float64(maxW) / float64(maxH)
+
+	var dstW, dstH int
+	if srcAspectRatio > maxAspectRatio {
+		dstW = maxW
+		dstH = int(float64(dstW) / srcAspectRatio)
+	} else {
+		dstH = maxH
+		dstW = int(float64(dstH) * srcAspectRatio)
+	}
+
+	return resize(img, dstW, dstH, filter)
+}
+
+func rotate(img image.Image, angle float64) *image.RGBA {
+	return transform.Rotate(img, angle, &transform.RotationOptions{ResizeBounds: true, Pivot: &image.Point{}})
+}
+
+func brightness(img image.Image, change float64) *image.RGBA {
+	return adjust.Brightness(img, change/100)
+}
+
+func contrast(img image.Image, change float64) *image.RGBA {
+	return adjust.Contrast(img, change/100)
+}
+
+// imageToRGBA converts an image.Image to *image.RGBA.
+func imageToRGBA(src image.Image) *image.RGBA {
+	if dst, ok := src.(*image.RGBA); ok {
+		return dst
+	}
+
+	b := src.Bounds()
+	dst := image.NewRGBA(b)
+	draw.Draw(dst, dst.Bounds(), src, b.Min, draw.Src)
+
+	return dst
+}
+
+// imageToGray converts an image.Image to *image.Gray.
+func imageToGray(src image.Image) *image.Gray {
+	if dst, ok := src.(*image.Gray); ok {
+		return dst
+	}
+
+	b := src.Bounds()
+	dst := image.NewGray(b)
+	draw.Draw(dst, dst.Bounds(), src, b.Min, draw.Src)
+
+	return dst
+}
+
+// isGrayScale checks if the image is grayscale.
+func isGrayScale(img image.Image) bool {
+	model := img.ColorModel()
+	if model == color.GrayModel || model == color.Gray16Model {
+		return true
+	}
+
+	return false
+}
+
+var colors16 = []color.Color{
+	color.RGBA{A: 255},
+	color.RGBA{R: 17, G: 17, B: 17, A: 255},
+	color.RGBA{R: 34, G: 34, B: 34, A: 255},
+	color.RGBA{R: 51, G: 51, B: 51, A: 255},
+	color.RGBA{R: 68, G: 68, B: 68, A: 255},
+	color.RGBA{R: 85, G: 85, B: 85, A: 255},
+	color.RGBA{R: 102, G: 102, B: 102, A: 255},
+	color.RGBA{R: 119, G: 119, B: 119, A: 255},
+	color.RGBA{R: 136, G: 136, B: 136, A: 255},
+	color.RGBA{R: 153, G: 153, B: 153, A: 255},
+	color.RGBA{R: 170, G: 170, B: 170, A: 255},
+	color.RGBA{R: 187, G: 187, B: 187, A: 255},
+	color.RGBA{R: 204, G: 204, B: 204, A: 255},
+	color.RGBA{R: 221, G: 221, B: 221, A: 255},
+	color.RGBA{R: 238, G: 238, B: 238, A: 255},
+	color.RGBA{R: 255, G: 255, B: 255, A: 255},
+}
+
+// imageToPaletted converts an image.Image to *image.Paletted using 16-color palette.
+func imageToPaletted(src image.Image) *image.Paletted {
+	b := src.Bounds()
+	dst := image.NewPaletted(b, colors16)
+	draw.FloydSteinberg.Draw(dst, b, imageToGray(src), b.Min)
+
+	return dst
+}

cbconvert_test.go

@@ -0,0 +1,101 @@
+package cbconvert
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestConvert(t *testing.T) {
+	tmpDir, err := os.MkdirTemp(os.TempDir(), "cbc")
+	if err != nil {
+		t.Error(err)
+	}
+
+	opts := NewOptions()
+	opts.OutDir = tmpDir
+
+	conv := New(opts)
+
+	files, err := conv.Files([]string{"testdata/test", "testdata"})
+	if err != nil {
+		t.Error(err)
+	}
+
+	for _, format := range []string{"jpeg", "png", "tiff", "bmp", "webp", "avif", "jxl"} {
+		conv.Opts.Format = format
+
+		for _, file := range files {
+			conv.Opts.Suffix = fmt.Sprintf("_%s%s", format, filepath.Ext(file.Path))
+
+			err = conv.Convert(file.Path, file.Stat)
+			if err != nil {
+				t.Errorf("format %s: file %s: %v", format, file.Name, err)
+			}
+		}
+	}
+
+	err = os.RemoveAll(tmpDir)
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func TestCover(t *testing.T) {
+	tmpDir, err := os.MkdirTemp(os.TempDir(), "cbc")
+	if err != nil {
+		t.Error(err)
+	}
+
+	opts := NewOptions()
+	opts.OutDir = tmpDir
+
+	conv := New(opts)
+
+	files, err := conv.Files([]string{"testdata/test.cbt"})
+	if err != nil {
+		t.Error(err)
+	}
+
+	for _, file := range files {
+		err = conv.Cover(file.Path, file.Stat)
+		if err != nil {
+			t.Error(err)
+		}
+	}
+
+	err = os.RemoveAll(tmpDir)
+	if err != nil {
+		t.Error(err)
+	}
+}
+
+func TestThumbnail(t *testing.T) {
+	tmpDir, err := os.MkdirTemp(os.TempDir(), "cbc")
+	if err != nil {
+		t.Error(err)
+	}
+
+	opts := NewOptions()
+	opts.OutDir = tmpDir
+
+	conv := New(opts)
+
+	files, err := conv.Files([]string{"testdata/test.pdf"})
+	if err != nil {
+		t.Error(err)
+	}
+
+	for _, file := range files {
+		err = conv.Thumbnail(file.Path, file.Stat)
+		if err != nil {
+			t.Error(err)
+		}
+	}
+
+	err = os.RemoveAll(tmpDir)
+	if err != nil {
+		t.Error(err)
+	}
+}

cmd/cbconvert-gui/dist/linux/io.github.gen2brain.cbconvert.desktop

@@ -0,0 +1,10 @@
+[Desktop Entry]
+Name=CBconvert
+GenericName=A Comic Book converter
+Comment=A comic converter with support for .cb*, .pdf, .xps, .epub, .mobi and directories.
+Exec=cbconvert-gui
+Icon=io.github.gen2brain.cbconvert
+Terminal=false
+Type=Application
+StartupNotify=true
+Categories=Graphics;Utility;

cmd/cbconvert-gui/dist/linux/io.github.gen2brain.cbconvert.metainfo.xml

@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <id>io.github.gen2brain.cbconvert</id>
+
+  <name>CBconvert</name>
+  <summary>A Comic Book converter</summary>
+
+  <metadata_license>MIT</metadata_license>
+  <project_license>GPL-3</project_license>
+
+  <description>
+    <p>
+      A comic book converter with support for .cb*, .pdf, .xps, .epub, .mobi and directories.
+      Images can be converted to JPEG, PNG, TIFF, WEBP, AVIF, JXL or 4-Bit BMP (16 colors) file format.
+    </p>
+  </description>
+
+  <developer id="com.github.gen2brain">
+    <name>Milan Nikolic</name>
+  </developer>
+
+  <launchable type="desktop-id">io.github.gen2brain.cbconvert.desktop</launchable>
+
+  <screenshots>
+    <screenshot type="default">
+      <caption>Options</caption>
+      <image>https://raw.githubusercontent.com/gen2brain/cbconvert/master/cmd/cbconvert-gui/screenshots/linux-01.jpg</image>
+    </screenshot>
+    <screenshot>
+      <caption>Converting</caption>
+      <image>https://raw.githubusercontent.com/gen2brain/cbconvert/master/cmd/cbconvert-gui/screenshots/linux-02.jpg</image>
+    </screenshot>
+  </screenshots>
+
+  <url type="homepage">https://github.com/gen2brain/cbconvert</url>
+  <url type="bugtracker">https://github.com/gen2brain/cbconvert/issues</url>
+
+  <content_rating type="oars-1.1"/>
+
+  <releases>
+    <release version="1.1.0" date="2024-11-06" type="stable">
+      <description>
+        <ul>
+          <li>Use jpegli for smaller files</li>
+          <li>Remove ImageMagick dependency</li>
+          <li>Wayland support</li>
+          <li>Support for DOCX and PPTX</li>
+        </ul>
+      </description>
+      <url type="details">https://github.com/gen2brain/cbconvert/releases/tag/v1.1.0</url>
+    </release>
+    <release version="1.0.4" date="2024-02-08" type="stable">
+      <description>
+        <ul>
+          <li>Update modules and dependencies</li>
+        </ul>
+      </description>
+      <url type="details">https://github.com/gen2brain/cbconvert/releases/tag/v1.0.4</url>
+    </release>
+    <release version="1.0.3" date="2023-09-14" type="stable">
+      <description>
+        <ul>
+          <li>Add content rating</li>
+        </ul>
+      </description>
+      <url type="details">https://github.com/gen2brain/cbconvert/releases/tag/v1.0.3</url>
+    </release>
+    <release version="1.0.2" date="2023-09-14" type="stable">
+      <description>
+        <ul>
+          <li>Change flatpak exec/command name to cbconvert</li>
+        </ul>
+      </description>
+      <url type="details">https://github.com/gen2brain/cbconvert/releases/tag/v1.0.2</url>
+    </release>
+    <release version="1.0.1" date="2023-09-14" type="stable">
+      <description>
+        <ul>
+          <li>Add flatpak manifest</li>
+        </ul>
+      </description>
+      <url type="details">https://github.com/gen2brain/cbconvert/releases/tag/v1.0.1</url>
+    </release>
+    <release version="1.0.0" date="2023-09-14" type="stable">
+      <description>
+        <ul>
+          <li>Add GUI</li>
+          <li>Add support for JPEG XL</li>
+        </ul>
+      </description>
+      <url type="details">https://github.com/gen2brain/cbconvert/releases/tag/v1.0.0</url>
+    </release>
+  </releases>
+
+</component>

cmd/cbconvert-gui/dist/linux/io.github.gen2brain.cbconvert.thumbnailer

@@ -0,0 +1,4 @@
+[Thumbnailer Entry]
+TryExec=cbconvert
+Exec=cbconvert thumbnail --quiet --width %s --outfile %o %i
+MimeType=application/pdf;application/x-cb7;application/x-cbt;application/epub+zip;application/vnd.comicbook-rar;application/vnd.comicbook+zip;application/x-mobipocket-ebook;application/vnd.ms-xpsdocument;application/vnd.openxmlformats-officedocument.wordprocessingml.document;application/vnd.openxmlformats-officedocument.presentationml.presentation;application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;

cmd/cbconvert-gui/dist/linux/modules.txt

@@ -0,0 +1,156 @@
+# github.com/anthonynsimon/bild v0.14.0
+## explicit; go 1.21
+github.com/anthonynsimon/bild/adjust
+github.com/anthonynsimon/bild/clone
+github.com/anthonynsimon/bild/math/f64
+github.com/anthonynsimon/bild/parallel
+github.com/anthonynsimon/bild/transform
+github.com/anthonynsimon/bild/util
+# github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d
+## explicit; go 1.13
+github.com/dsoprea/go-exif/v2
+github.com/dsoprea/go-exif/v2/common
+github.com/dsoprea/go-exif/v2/undefined
+# github.com/dsoprea/go-logging v0.0.0-20200710184922-b02d349568dd
+## explicit; go 1.13
+github.com/dsoprea/go-logging
+# github.com/dsoprea/go-png-image-structure v0.0.0-20210512210324-29b889a6093d
+## explicit; go 1.13
+github.com/dsoprea/go-png-image-structure
+# github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349
+## explicit; go 1.12
+github.com/dsoprea/go-utility/image
+# github.com/dustin/go-humanize v1.0.1
+## explicit; go 1.16
+github.com/dustin/go-humanize
+# github.com/ebitengine/purego v0.8.1
+## explicit; go 1.18
+github.com/ebitengine/purego
+github.com/ebitengine/purego/internal/cgo
+github.com/ebitengine/purego/internal/fakecgo
+github.com/ebitengine/purego/internal/strings
+# github.com/fvbommel/sortorder v1.1.0
+## explicit; go 1.13
+github.com/fvbommel/sortorder
+# github.com/gen2brain/avif v0.4.1
+## explicit; go 1.21
+github.com/gen2brain/avif
+# github.com/gen2brain/cbconvert v1.0.5-0.20241106181414-0dee611bf1de
+## explicit; go 1.23
+github.com/gen2brain/cbconvert
+# github.com/gen2brain/go-fitz v1.24.14
+## explicit; go 1.22
+github.com/gen2brain/go-fitz
+github.com/gen2brain/go-fitz/include/mupdf
+github.com/gen2brain/go-fitz/include/mupdf/fitz
+github.com/gen2brain/go-fitz/libs
+# github.com/gen2brain/go-unarr v0.2.4
+## explicit; go 1.21
+github.com/gen2brain/go-unarr
+github.com/gen2brain/go-unarr/unarrc
+github.com/gen2brain/go-unarr/unarrc/external
+github.com/gen2brain/go-unarr/unarrc/external/bzip2
+github.com/gen2brain/go-unarr/unarrc/external/unarr
+github.com/gen2brain/go-unarr/unarrc/external/unarr/_7z
+github.com/gen2brain/go-unarr/unarrc/external/unarr/common
+github.com/gen2brain/go-unarr/unarrc/external/unarr/lzmasdk
+github.com/gen2brain/go-unarr/unarrc/external/unarr/rar
+github.com/gen2brain/go-unarr/unarrc/external/unarr/tar
+github.com/gen2brain/go-unarr/unarrc/external/unarr/zip
+github.com/gen2brain/go-unarr/unarrc/external/zlib
+# github.com/gen2brain/iup-go/iup v0.0.0-20241106050025-0f971ac33ed4
+## explicit; go 1.22
+github.com/gen2brain/iup-go/iup
+github.com/gen2brain/iup-go/iup/external
+github.com/gen2brain/iup-go/iup/external/include
+github.com/gen2brain/iup-go/iup/external/src
+github.com/gen2brain/iup-go/iup/external/src/cocoa
+github.com/gen2brain/iup-go/iup/external/src/gtk
+github.com/gen2brain/iup-go/iup/external/src/mot
+github.com/gen2brain/iup-go/iup/external/src/win
+github.com/gen2brain/iup-go/iup/external/src/win/wdl
+github.com/gen2brain/iup-go/iup/external/src/win/wdl/dummy
+github.com/gen2brain/iup-go/iup/external/srcgl
+github.com/gen2brain/iup-go/iup/manifest
+# github.com/gen2brain/jpegli v0.3.3
+## explicit; go 1.22
+github.com/gen2brain/jpegli
+# github.com/gen2brain/jpegxl v0.4.2
+## explicit; go 1.22
+github.com/gen2brain/jpegxl
+# github.com/gen2brain/webp v0.5.1
+## explicit; go 1.22
+github.com/gen2brain/webp
+# github.com/go-errors/errors v1.5.1
+## explicit; go 1.14
+github.com/go-errors/errors
+# github.com/godbus/dbus/v5 v5.1.0
+## explicit; go 1.12
+github.com/godbus/dbus/v5
+# github.com/golang/geo v0.0.0-20230421003525-6adc56603217
+## explicit; go 1.18
+github.com/golang/geo/r1
+github.com/golang/geo/r2
+github.com/golang/geo/r3
+github.com/golang/geo/s1
+github.com/golang/geo/s2
+# github.com/google/uuid v1.6.0
+## explicit
+github.com/google/uuid
+# github.com/jsummers/gobmp v0.0.0-20230614200233-a9de23ed2e25
+## explicit
+github.com/jsummers/gobmp
+# github.com/jupiterrider/ffi v0.2.1
+## explicit; go 1.18
+github.com/jupiterrider/ffi
+# github.com/tetratelabs/wazero v1.8.1
+## explicit; go 1.21
+github.com/tetratelabs/wazero
+github.com/tetratelabs/wazero/api
+github.com/tetratelabs/wazero/experimental
+github.com/tetratelabs/wazero/experimental/sys
+github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1
+github.com/tetratelabs/wazero/internal/descriptor
+github.com/tetratelabs/wazero/internal/engine/interpreter
+github.com/tetratelabs/wazero/internal/engine/wazevo
+github.com/tetratelabs/wazero/internal/engine/wazevo/backend
+github.com/tetratelabs/wazero/internal/engine/wazevo/backend/isa/amd64
+github.com/tetratelabs/wazero/internal/engine/wazevo/backend/isa/arm64
+github.com/tetratelabs/wazero/internal/engine/wazevo/backend/regalloc
+github.com/tetratelabs/wazero/internal/engine/wazevo/frontend
+github.com/tetratelabs/wazero/internal/engine/wazevo/ssa
+github.com/tetratelabs/wazero/internal/engine/wazevo/wazevoapi
+github.com/tetratelabs/wazero/internal/expctxkeys
+github.com/tetratelabs/wazero/internal/filecache
+github.com/tetratelabs/wazero/internal/fsapi
+github.com/tetratelabs/wazero/internal/ieee754
+github.com/tetratelabs/wazero/internal/internalapi
+github.com/tetratelabs/wazero/internal/leb128
+github.com/tetratelabs/wazero/internal/moremath
+github.com/tetratelabs/wazero/internal/platform
+github.com/tetratelabs/wazero/internal/sock
+github.com/tetratelabs/wazero/internal/sys
+github.com/tetratelabs/wazero/internal/sysfs
+github.com/tetratelabs/wazero/internal/u32
+github.com/tetratelabs/wazero/internal/u64
+github.com/tetratelabs/wazero/internal/version
+github.com/tetratelabs/wazero/internal/wasip1
+github.com/tetratelabs/wazero/internal/wasm
+github.com/tetratelabs/wazero/internal/wasm/binary
+github.com/tetratelabs/wazero/internal/wasmdebug
+github.com/tetratelabs/wazero/internal/wasmruntime
+github.com/tetratelabs/wazero/sys
+# golang.org/x/image v0.21.0
+## explicit; go 1.18
+golang.org/x/image/ccitt
+golang.org/x/image/tiff
+golang.org/x/image/tiff/lzw
+# golang.org/x/net v0.30.0
+## explicit; go 1.18
+golang.org/x/net/context
+# golang.org/x/sync v0.8.0
+## explicit; go 1.18
+golang.org/x/sync/errgroup
+# gopkg.in/yaml.v2 v2.4.0
+## explicit; go 1.15
+gopkg.in/yaml.v2

cmd/cbconvert-gui/dist/macos/CBconvert.app/Contents/Info.plist

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+
+	<key>CFBundleExecutable</key>
+	<string>cbconvert-gui</string>
+
+	<key>CFBundleIconFile</key>
+	<string>icon</string>
+
+	<key>CFBundleIdentifier</key>
+	<string>io.github.gen2brain.cbconvert</string>
+
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+
+	<key>CFBundleName</key>
+	<string>CBconvert</string>
+
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+
+	<key>CFBundleShortVersionString</key>
+	<string>1.0.0</string>
+
+	<key>CFBundleVersion</key>
+	<string>1</string>
+
+	<key>NSHighResolutionCapable</key>
+	<string>True</string>
+</dict>
+</plist>

cmd/cbconvert-gui/dist/macos/CBconvert.app/Contents/Resources/Info.plist

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>19H2</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>iup</string>
+	<key>CFBundleIdentifier</key>
+	<string>br.puc-rio.tecgraf.iup</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>iup</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>DTCompiler</key>
+	<string>com.apple.compilers.llvm.clang.1_0</string>
+	<key>DTPlatformBuild</key>
+	<string>12D4e</string>
+	<key>DTPlatformName</key>
+	<string>macosx</string>
+	<key>DTPlatformVersion</key>
+	<string>11.1</string>
+	<key>DTSDKBuild</key>
+	<string>20C63</string>
+	<key>DTSDKName</key>
+	<string>macosx11.1</string>
+	<key>DTXcode</key>
+	<string>1240</string>
+	<key>DTXcodeBuild</key>
+	<string>12D4e</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.14</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2015 Tecgraf, PUC-Rio, Brazil. All rights reserved.</string>
+</dict>
+</plist>

cmd/cbconvert-gui/go.mod

@@ -0,0 +1,56 @@
+module github.com/gen2brain/cbconvert/cmd/cbconvert-gui
+
+go 1.26
+
+require (
+	github.com/gen2brain/cbconvert v1.0.5-0.20260623161611-a5817c3ba5de
+	github.com/gen2brain/iup-go/iup v0.32.1-0.20260604112206-a19da6654449
+)
+
+require (
+	github.com/STARRY-S/zip v0.2.3 // indirect
+	github.com/andybalholm/brotli v1.2.1 // indirect
+	github.com/anthonynsimon/bild v0.15.0 // indirect
+	github.com/bodgit/plumbing v1.3.0 // indirect
+	github.com/bodgit/sevenzip v1.6.4 // indirect
+	github.com/bodgit/windows v1.0.1 // indirect
+	github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 // indirect
+	github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d // indirect
+	github.com/dsoprea/go-logging v0.0.0-20200710184922-b02d349568dd // indirect
+	github.com/dsoprea/go-png-image-structure v0.0.0-20210512210324-29b889a6093d // indirect
+	github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/ebitengine/purego v0.10.1 // indirect
+	github.com/fvbommel/sortorder v1.1.0 // indirect
+	github.com/gen2brain/avif v0.5.1 // indirect
+	github.com/gen2brain/go-fitz v1.24.15 // indirect
+	github.com/gen2brain/jpegli v0.4.0 // indirect
+	github.com/gen2brain/jpegxl v0.5.1 // indirect
+	github.com/gen2brain/webp v0.6.1 // indirect
+	github.com/go-errors/errors v1.5.1 // indirect
+	github.com/golang/geo v0.0.0-20260622181633-f80708c60e82 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/jsummers/gobmp v0.0.0-20230614200233-a9de23ed2e25 // indirect
+	github.com/jupiterrider/ffi v0.7.0 // indirect
+	github.com/klauspost/compress v1.18.6 // indirect
+	github.com/klauspost/pgzip v1.2.6 // indirect
+	github.com/mholt/archives v0.1.5 // indirect
+	github.com/mikelolasagasti/xz v1.0.1 // indirect
+	github.com/minio/minlz v1.1.1 // indirect
+	github.com/nwaples/rardecode/v2 v2.2.5 // indirect
+	github.com/pierrec/lz4/v4 v4.1.27 // indirect
+	github.com/sorairolake/lzip-go v0.3.8 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/stangelandcl/ppmd v0.1.1 // indirect
+	github.com/tetratelabs/wazero v1.12.0 // indirect
+	github.com/ulikunitz/xz v0.5.15 // indirect
+	go4.org v0.0.0-20260112195520-a5071408f32f // indirect
+	golang.org/x/image v0.43.0 // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sync v0.21.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)
+
+replace github.com/gen2brain/cbconvert => ../..

cmd/cbconvert-gui/go.sum

@@ -0,0 +1,143 @@
+github.com/STARRY-S/zip v0.2.3 h1:luE4dMvRPDOWQdeDdUxUoZkzUIpTccdKdhHHsQJ1fm4=
+github.com/STARRY-S/zip v0.2.3/go.mod h1:lqJ9JdeRipyOQJrYSOtpNAiaesFO6zVDsE8GIGFaoSk=
+github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/anthonynsimon/bild v0.15.0 h1:FzvaNLuNlAPKw1Xz7V2WYOcGIEBMj8Y6ZyAk7CI+HzA=
+github.com/anthonynsimon/bild v0.15.0/go.mod h1:qIgJ9FldkCn0iy5Ad24fzUkz5R+iJ0WfhiV+6FeCB5A=
+github.com/bodgit/plumbing v1.3.0 h1:pf9Itz1JOQgn7vEOE7v7nlEfBykYqvUYioC61TwWCFU=
+github.com/bodgit/plumbing v1.3.0/go.mod h1:JOTb4XiRu5xfnmdnDJo6GmSbSbtSyufrsyZFByMtKEs=
+github.com/bodgit/sevenzip v1.6.4 h1:iHiVJfxbrB6RF4X+snI2MpVgNBKmVfGaTqZGNlMQIU0=
+github.com/bodgit/sevenzip v1.6.4/go.mod h1:ZtNi5KNgHXeXg1G7WiF0IWSuFE2eG6lt/cTGlvuirO0=
+github.com/bodgit/windows v1.0.1 h1:tF7K6KOluPYygXa3Z2594zxlkbKPAOvqr97etrGNIz4=
+github.com/bodgit/windows v1.0.1/go.mod h1:a6JLwrB4KrTR5hBpp8FI9/9W9jJfeQ2h4XDXU74ZCdM=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 h1:2tV76y6Q9BB+NEBasnqvs7e49aEBFI8ejC89PSnWH+4=
+github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707/go.mod h1:qssHWj60/X5sZFNxpG4HBPDHVqxNm4DfnCKgrbZOT+s=
+github.com/dsnet/golib v0.0.0-20171103203638-1ea166775780/go.mod h1:Lj+Z9rebOhdfkVLjJ8T6VcRQv3SXugXy999NBtR9aFY=
+github.com/dsoprea/go-exif/v2 v2.0.0-20200321225314-640175a69fe4/go.mod h1:Lm2lMM2zx8p4a34ZemkaUV95AnMl4ZvLbCUbwOvLC2E=
+github.com/dsoprea/go-exif/v2 v2.0.0-20200604193436-ca8584a0e1c4/go.mod h1:9EXlPeHfblFFnwu5UOqmP2eoZfJyAZ2Ri/Vki33ajO0=
+github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d h1:yeH8wrJa3+8uKKDAdURHUK1ds2UvKhMqX2MiOdVeKPs=
+github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d/go.mod h1:oKrjk2kb3rAR5NbtSTLUMvMSbc+k8ZosI3MaVH47noc=
+github.com/dsoprea/go-exif/v3 v3.0.0-20200717053412-08f1b6708903/go.mod h1:0nsO1ce0mh5czxGeLo4+OCZ/C6Eo6ZlMWsz7rH/Gxv8=
+github.com/dsoprea/go-exif/v3 v3.0.0-20210512043655-120bcdb2a55e/go.mod h1:cg5SNYKHMmzxsr9X6ZeLh/nfBRHHp5PngtEPcujONtk=
+github.com/dsoprea/go-logging v0.0.0-20190624164917-c4f10aab7696/go.mod h1:Nm/x2ZUNRW6Fe5C3LxdY1PyZY5wmDv/s5dkPJ/VB3iA=
+github.com/dsoprea/go-logging v0.0.0-20200517223158-a10564966e9d/go.mod h1:7I+3Pe2o/YSU88W0hWlm9S22W7XI1JFNJ86U0zPKMf8=
+github.com/dsoprea/go-logging v0.0.0-20200710184922-b02d349568dd h1:l+vLbuxptsC6VQyQsfD7NnEC8BZuFpz45PgY+pH8YTg=
+github.com/dsoprea/go-logging v0.0.0-20200710184922-b02d349568dd/go.mod h1:7I+3Pe2o/YSU88W0hWlm9S22W7XI1JFNJ86U0zPKMf8=
+github.com/dsoprea/go-png-image-structure v0.0.0-20210512210324-29b889a6093d h1:8+qI8ant/vZkNSsbwSjIR6XJfWcDVTg/qx/3pRUUZNA=
+github.com/dsoprea/go-png-image-structure v0.0.0-20210512210324-29b889a6093d/go.mod h1:yTR3tKgyk20phAFg6IE9ulMA5NjEDD2wyx+okRFLVtw=
+github.com/dsoprea/go-utility v0.0.0-20200711062821-fab8125e9bdf/go.mod h1:95+K3z2L0mqsVYd6yveIv1lmtT3tcQQ3dVakPySffW8=
+github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349 h1:/py11NlxDaOxkT9OKN+gXgT+QOH5xj1ZRoyusfRIlo4=
+github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349/go.mod h1:KVK+/Hul09ujXAGq+42UBgCTnXkiJZRnLYdURGjQUwo=
+github.com/dsoprea/go-utility/v2 v2.0.0-20200717064901-2fccff4aa15e/go.mod h1:uAzdkPTub5Y9yQwXe8W4m2XuP0tK4a9Q/dantD0+uaU=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/ebitengine/purego v0.10.1 h1:dewVBCBT2GaMu1SrNTYxQhgQBethzfhiwvZiLGP/qyY=
+github.com/ebitengine/purego v0.10.1/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
+github.com/fvbommel/sortorder v1.1.0 h1:fUmoe+HLsBTctBDoaBwpQo5N+nrCp8g/BjKb/6ZQmYw=
+github.com/fvbommel/sortorder v1.1.0/go.mod h1:uk88iVf1ovNn1iLfgUVU2F9o5eO30ui720w+kxuqRs0=
+github.com/gen2brain/avif v0.5.1 h1:LQzLsJpWyGlsa4wuZ3D57qEbCiICIK7Yidz5ZPEwzTk=
+github.com/gen2brain/avif v0.5.1/go.mod h1:QgrYqdVE9y40PCfArK9VakcMIpYeDYpZmCSLkW6C1n8=
+github.com/gen2brain/go-fitz v1.24.15 h1:sJNB1MOWkqnzzENPHggFpgxTwW0+S5WF/rM5wUBpJWo=
+github.com/gen2brain/go-fitz v1.24.15/go.mod h1:SftkiVbTHqF141DuiLwBBM65zP7ig6AVDQpf2WlHamo=
+github.com/gen2brain/iup-go/iup v0.32.1-0.20260604112206-a19da6654449 h1:HPqLUcspf4aPnyQIgeFKlLmphFVpFP34fzr1ZdnNyfc=
+github.com/gen2brain/iup-go/iup v0.32.1-0.20260604112206-a19da6654449/go.mod h1:V4f7tHOJAeHtjQ+ju795QKv6DGdLEb4L5cmWB1sjSzU=
+github.com/gen2brain/jpegli v0.4.0 h1:TnmAO8EcekS/XCboyLPjP6cqz025tkhdaFkiYNd3wH8=
+github.com/gen2brain/jpegli v0.4.0/go.mod h1:zJ++s4symmKCN1CLkrY0dGXTY3s0NWbd94Rz9KLdCzk=
+github.com/gen2brain/jpegxl v0.5.1 h1:UuBUIkZ35DErImU3bTA6rltfV5zSgVNOA/K5a6JibfE=
+github.com/gen2brain/jpegxl v0.5.1/go.mod h1:Wlc6lqx03RJfhiQRyHa2e+8VQwT4/qv7zSRsNv9T+yE=
+github.com/gen2brain/webp v0.6.1 h1:ei7Y1SWpQcdqz3YNDNyn4y2nQanxs9WLzwW5/2DKS64=
+github.com/gen2brain/webp v0.6.1/go.mod h1:iGWMaCSw7t3I/Cv9llzEKmpnR36S8lS8VL/ZVjxU0JE=
+github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
+github.com/go-errors/errors v1.0.2/go.mod h1:psDX2osz5VnTOnFWbDeWwS7yejl+uV3FEWEp4lssFEs=
+github.com/go-errors/errors v1.1.1/go.mod h1:psDX2osz5VnTOnFWbDeWwS7yejl+uV3FEWEp4lssFEs=
+github.com/go-errors/errors v1.5.1 h1:ZwEMSLRCapFLflTpT7NKaAc7ukJ8ZPEjzlxt8rPN8bk=
+github.com/go-errors/errors v1.5.1/go.mod h1:sIVyrIiJhuEF+Pj9Ebtd6P/rEYROXFi3BopGUQ5a5Og=
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+github.com/golang/geo v0.0.0-20200319012246-673a6f80352d/go.mod h1:QZ0nwyI2jOfgRAoBvP+ab5aRr7c9x7lhGEJrKvBwjWI=
+github.com/golang/geo v0.0.0-20260622181633-f80708c60e82 h1:q100v18oYIaE4p5myLFqDyfXTOxivzwGyLjGCEfv8x4=
+github.com/golang/geo v0.0.0-20260622181633-f80708c60e82/go.mod h1:Mymr9kRGDc64JPr03TSZmuIBODZ3KyswLzm1xL0HFA8=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
+github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
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cmd/cbconvert-gui/screenshots/README.md

@@ -0,0 +1,10 @@
+## Screenshots
+
+Windows  
+<img src="windows-01.jpg" width="700" title="Windows" alt="Windows" />
+
+Linux  
+<img src="linux-01.jpg" width="700" title="Linux" alt="Linux" />
+
+macOS  
+<img src="macos-01.jpg" width="700" title="macOS" alt="macOS" />

cmd/cbconvert/go.mod

@@ -0,0 +1,60 @@
+module github.com/gen2brain/cbconvert/cmd/cbconvert
+
+go 1.26
+
+require (
+	github.com/gen2brain/cbconvert v1.0.5-0.20260623161611-a5817c3ba5de
+	github.com/schollz/progressbar/v3 v3.19.0
+)
+
+require (
+	github.com/STARRY-S/zip v0.2.3 // indirect
+	github.com/andybalholm/brotli v1.2.1 // indirect
+	github.com/anthonynsimon/bild v0.15.0 // indirect
+	github.com/bodgit/plumbing v1.3.0 // indirect
+	github.com/bodgit/sevenzip v1.6.4 // indirect
+	github.com/bodgit/windows v1.0.1 // indirect
+	github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 // indirect
+	github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d // indirect
+	github.com/dsoprea/go-logging v0.0.0-20200710184922-b02d349568dd // indirect
+	github.com/dsoprea/go-png-image-structure v0.0.0-20210512210324-29b889a6093d // indirect
+	github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/ebitengine/purego v0.10.1 // indirect
+	github.com/fvbommel/sortorder v1.1.0 // indirect
+	github.com/gen2brain/avif v0.5.1 // indirect
+	github.com/gen2brain/go-fitz v1.24.15 // indirect
+	github.com/gen2brain/jpegli v0.4.0 // indirect
+	github.com/gen2brain/jpegxl v0.5.1 // indirect
+	github.com/gen2brain/webp v0.6.1 // indirect
+	github.com/go-errors/errors v1.5.1 // indirect
+	github.com/golang/geo v0.0.0-20260622181633-f80708c60e82 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/jsummers/gobmp v0.0.0-20230614200233-a9de23ed2e25 // indirect
+	github.com/jupiterrider/ffi v0.7.0 // indirect
+	github.com/klauspost/compress v1.18.6 // indirect
+	github.com/klauspost/pgzip v1.2.6 // indirect
+	github.com/mattn/go-runewidth v0.0.24 // indirect
+	github.com/mholt/archives v0.1.5 // indirect
+	github.com/mikelolasagasti/xz v1.0.1 // indirect
+	github.com/minio/minlz v1.1.1 // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/nwaples/rardecode/v2 v2.2.5 // indirect
+	github.com/pierrec/lz4/v4 v4.1.27 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sorairolake/lzip-go v0.3.8 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/stangelandcl/ppmd v0.1.1 // indirect
+	github.com/tetratelabs/wazero v1.12.0 // indirect
+	github.com/ulikunitz/xz v0.5.15 // indirect
+	go4.org v0.0.0-20260112195520-a5071408f32f // indirect
+	golang.org/x/image v0.43.0 // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sync v0.21.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/term v0.44.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)
+
+replace github.com/gen2brain/cbconvert => ../..

cmd/cbconvert/go.sum

@@ -0,0 +1,155 @@
+github.com/STARRY-S/zip v0.2.3 h1:luE4dMvRPDOWQdeDdUxUoZkzUIpTccdKdhHHsQJ1fm4=
+github.com/STARRY-S/zip v0.2.3/go.mod h1:lqJ9JdeRipyOQJrYSOtpNAiaesFO6zVDsE8GIGFaoSk=
+github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/anthonynsimon/bild v0.15.0 h1:FzvaNLuNlAPKw1Xz7V2WYOcGIEBMj8Y6ZyAk7CI+HzA=
+github.com/anthonynsimon/bild v0.15.0/go.mod h1:qIgJ9FldkCn0iy5Ad24fzUkz5R+iJ0WfhiV+6FeCB5A=
+github.com/bodgit/plumbing v1.3.0 h1:pf9Itz1JOQgn7vEOE7v7nlEfBykYqvUYioC61TwWCFU=
+github.com/bodgit/plumbing v1.3.0/go.mod h1:JOTb4XiRu5xfnmdnDJo6GmSbSbtSyufrsyZFByMtKEs=
+github.com/bodgit/sevenzip v1.6.4 h1:iHiVJfxbrB6RF4X+snI2MpVgNBKmVfGaTqZGNlMQIU0=
+github.com/bodgit/sevenzip v1.6.4/go.mod h1:ZtNi5KNgHXeXg1G7WiF0IWSuFE2eG6lt/cTGlvuirO0=
+github.com/bodgit/windows v1.0.1 h1:tF7K6KOluPYygXa3Z2594zxlkbKPAOvqr97etrGNIz4=
+github.com/bodgit/windows v1.0.1/go.mod h1:a6JLwrB4KrTR5hBpp8FI9/9W9jJfeQ2h4XDXU74ZCdM=
+github.com/chengxilo/virtualterm v1.0.4 h1:Z6IpERbRVlfB8WkOmtbHiDbBANU7cimRIof7mk9/PwM=
+github.com/chengxilo/virtualterm v1.0.4/go.mod h1:DyxxBZz/x1iqJjFxTFcr6/x+jSpqN0iwWCOK1q10rlY=
+github.com/clipperhouse/uax29/v2 v2.2.0 h1:ChwIKnQN3kcZteTXMgb1wztSgaU+ZemkgWdohwgs8tY=
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+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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+github.com/dsnet/golib v0.0.0-20171103203638-1ea166775780/go.mod h1:Lj+Z9rebOhdfkVLjJ8T6VcRQv3SXugXy999NBtR9aFY=
+github.com/dsoprea/go-exif/v2 v2.0.0-20200321225314-640175a69fe4/go.mod h1:Lm2lMM2zx8p4a34ZemkaUV95AnMl4ZvLbCUbwOvLC2E=
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cmd/cbconvert/main.go

@@ -0,0 +1,329 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"runtime/debug"
+	"syscall"
+
+	"github.com/gen2brain/cbconvert"
+	pb "github.com/schollz/progressbar/v3"
+)
+
+var appVersion string
+
+func init() {
+	if appVersion != "" {
+		return
+	}
+
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return
+	}
+
+	if info.Main.Version != "" {
+		appVersion = info.Main.Version
+	}
+
+	for _, kv := range info.Settings {
+		if kv.Value == "" {
+			continue
+		}
+		if kv.Key == "vcs.revision" {
+			appVersion = kv.Value
+			if len(appVersion) > 10 {
+				appVersion = kv.Value[:10]
+			}
+		}
+	}
+}
+
+func main() {
+	opts, args := parseFlags()
+
+	if opts.Version {
+		fmt.Println(filepath.Base(os.Args[0]), appVersion)
+		os.Exit(0)
+	}
+
+	conv := cbconvert.New(opts)
+
+	c := make(chan os.Signal, 2)
+	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		for range c {
+			if err := os.RemoveAll(conv.Workdir); err != nil {
+				fmt.Println(err)
+			}
+			os.Exit(1)
+		}
+	}()
+
+	if _, err := os.Stat(opts.OutDir); err != nil {
+		if err := os.MkdirAll(opts.OutDir, 0775); err != nil {
+			fmt.Println(err)
+		}
+		os.Exit(1)
+	}
+
+	files, err := conv.Files(args)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	var bar *pb.ProgressBar
+	if opts.Cover || opts.Thumbnail || opts.Meta {
+		if !opts.Quiet {
+			bar = pb.NewOptions(conv.Nfiles,
+				pb.OptionShowCount(),
+				pb.OptionClearOnFinish(),
+				pb.OptionUseANSICodes(true),
+				pb.OptionSetPredictTime(false),
+			)
+		}
+	}
+
+	conv.OnStart = func() {
+		if !opts.Quiet {
+			bar = pb.NewOptions(conv.Ncontents,
+				pb.OptionShowCount(),
+				pb.OptionClearOnFinish(),
+				pb.OptionUseANSICodes(true),
+				pb.OptionSetDescription(fmt.Sprintf("Converting %d of %d:", conv.CurrFile, conv.Nfiles)),
+				pb.OptionSetPredictTime(false),
+			)
+		}
+	}
+
+	conv.OnProgress = func() {
+		if !opts.Quiet {
+			_ = bar.Add(1)
+		}
+	}
+
+	conv.OnCompress = func() {
+		if !opts.Quiet {
+			fmt.Fprintf(os.Stderr, "Compressing %d of %d...\r", conv.CurrFile, conv.Nfiles)
+		}
+	}
+
+	for _, file := range files {
+		switch {
+		case opts.Meta:
+			ret, err := conv.Meta(file.Path)
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+
+			if opts.Cover {
+				fmt.Println(ret)
+			} else if opts.Comment {
+				fmt.Println(ret)
+			}
+
+			continue
+		case opts.Cover:
+			if err := conv.Cover(file.Path, file.Stat); err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+
+			continue
+		case opts.Thumbnail:
+			if err = conv.Thumbnail(file.Path, file.Stat); err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+
+			continue
+		}
+
+		if err := conv.Convert(file.Path, file.Stat); err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+	}
+
+	fmt.Fprintf(os.Stderr, "\r")
+}
+
+// parseFlags parses command line flags.
+func parseFlags() (cbconvert.Options, []string) {
+	opts := cbconvert.Options{}
+	var args []string
+
+	convert := flag.NewFlagSet("convert", flag.ExitOnError)
+	convert.IntVar(&opts.Width, "width", 0, "Image width")
+	convert.IntVar(&opts.Height, "height", 0, "Image height")
+	convert.BoolVar(&opts.Fit, "fit", false, "Best fit for required width and height")
+	convert.StringVar(&opts.Format, "format", "jpeg", "Image format, valid values are jpeg, png, tiff, bmp, webp, avif, jxl")
+	convert.StringVar(&opts.Archive, "archive", "zip", "Archive format, valid values are zip, tar")
+	convert.IntVar(&opts.Quality, "quality", 75, "Image quality")
+	convert.IntVar(&opts.Effort, "effort", -1, "Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-10), -1 uses the format default")
+	convert.BoolVar(&opts.Lossless, "lossless", false, "Lossless compression (webp, avif, jxl), ignores quality")
+	convert.IntVar(&opts.Filter, "filter", 2, "0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos")
+	convert.BoolVar(&opts.NoCover, "no-cover", false, "Do not convert the cover image")
+	convert.BoolVar(&opts.NoRGB, "no-rgb", false, "Do not convert images that have RGB colorspace")
+	convert.BoolVar(&opts.NoNonImage, "no-nonimage", false, "Remove non-image files from the archive")
+	convert.BoolVar(&opts.NoConvert, "no-convert", false, "Do not transform or convert images")
+	convert.BoolVar(&opts.Grayscale, "grayscale", false, "Convert images to grayscale (monochromatic)")
+	convert.IntVar(&opts.Rotate, "rotate", 0, "Rotate images, valid values are 0, 90, 180, 270")
+	convert.IntVar(&opts.Brightness, "brightness", 0, "Adjust the brightness of the images, must be in the range (-100, 100)")
+	convert.IntVar(&opts.Contrast, "contrast", 0, "Adjust the contrast of the images, must be in the range (-100, 100)")
+	convert.StringVar(&opts.Suffix, "suffix", "", "Add suffix to file basename")
+	convert.StringVar(&opts.OutDir, "outdir", ".", "Output directory")
+	convert.IntVar(&opts.Size, "size", 0, "Process only files larger than size (in MB)")
+	convert.BoolVar(&opts.Recursive, "recursive", false, "Process subdirectories recursively")
+	convert.BoolVar(&opts.Quiet, "quiet", false, "Hide console output")
+
+	cover := flag.NewFlagSet("cover", flag.ExitOnError)
+	cover.IntVar(&opts.Width, "width", 0, "Image width")
+	cover.IntVar(&opts.Height, "height", 0, "Image height")
+	cover.BoolVar(&opts.Fit, "fit", false, "Best fit for required width and height")
+	cover.StringVar(&opts.Format, "format", "jpeg", "Image format, valid values are jpeg, png, tiff, bmp, webp, avif")
+	cover.IntVar(&opts.Quality, "quality", 75, "Image quality")
+	cover.IntVar(&opts.Effort, "effort", -1, "Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-10), -1 uses the format default")
+	cover.BoolVar(&opts.Lossless, "lossless", false, "Lossless compression (webp, avif, jxl), ignores quality")
+	cover.IntVar(&opts.Filter, "filter", 2, "0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos")
+	cover.StringVar(&opts.OutDir, "outdir", ".", "Output directory")
+	cover.IntVar(&opts.Size, "size", 0, "Process only files larger than size (in MB)")
+	cover.BoolVar(&opts.Recursive, "recursive", false, "Process subdirectories recursively")
+	cover.BoolVar(&opts.Quiet, "quiet", false, "Hide console output")
+
+	thumbnail := flag.NewFlagSet("thumbnail", flag.ExitOnError)
+	thumbnail.IntVar(&opts.Width, "width", 0, "Image width")
+	thumbnail.IntVar(&opts.Height, "height", 0, "Image height")
+	thumbnail.BoolVar(&opts.Fit, "fit", false, "Best fit for required width and height")
+	thumbnail.IntVar(&opts.Filter, "filter", 2, "0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos")
+	thumbnail.StringVar(&opts.OutDir, "outdir", ".", "Output directory")
+	thumbnail.StringVar(&opts.OutFile, "outfile", "", "Output file")
+	thumbnail.IntVar(&opts.Size, "size", 0, "Process only files larger than size (in MB)")
+	thumbnail.BoolVar(&opts.Recursive, "recursive", false, "Process subdirectories recursively")
+	thumbnail.BoolVar(&opts.Quiet, "quiet", false, "Hide console output")
+
+	meta := flag.NewFlagSet("meta", flag.ExitOnError)
+	meta.BoolVar(&opts.Cover, "cover", false, "Print cover name")
+	meta.BoolVar(&opts.Comment, "comment", false, "Print zip comment")
+	meta.StringVar(&opts.CommentBody, "comment-body", "", "Set zip comment")
+	meta.StringVar(&opts.FileAdd, "file-add", "", "Add file to archive")
+	meta.StringVar(&opts.FileRemove, "file-remove", "", "Remove file from archive (glob pattern, i.e. *.xml)")
+
+	flag.NewFlagSet("version", flag.ExitOnError)
+
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage: %s <command> [<flags>] [file1 dir1 ... fileOrDirN]\n\n", filepath.Base(os.Args[0]))
+		fmt.Fprintf(os.Stderr, "\nCommands:\n")
+		fmt.Fprintf(os.Stderr, "\n  convert\n    \tConvert archive or document\n\n")
+		order := []string{"width", "height", "fit", "format", "archive", "quality", "effort", "lossless", "filter", "no-cover", "no-rgb",
+			"no-nonimage", "no-convert", "grayscale", "rotate", "brightness", "contrast", "suffix", "outdir", "size", "recursive", "quiet"}
+		for _, name := range order {
+			f := convert.Lookup(name)
+			fmt.Fprintf(os.Stderr, "    --%s\n    \t", f.Name)
+			fmt.Fprintf(os.Stderr, "%v (default %q)\n", f.Usage, f.DefValue)
+		}
+		fmt.Fprintf(os.Stderr, "\n  cover\n    \tExtract cover\n\n")
+		order = []string{"width", "height", "fit", "format", "quality", "effort", "lossless", "filter", "outdir", "size", "recursive", "quiet"}
+		for _, name := range order {
+			f := cover.Lookup(name)
+			fmt.Fprintf(os.Stderr, "    --%s\n    \t", f.Name)
+			fmt.Fprintf(os.Stderr, "%v (default %q)\n", f.Usage, f.DefValue)
+		}
+		fmt.Fprintf(os.Stderr, "\n  thumbnail\n    \tExtract cover thumbnail (freedesktop spec.)\n\n")
+		order = []string{"width", "height", "fit", "filter", "outdir", "outfile", "size", "recursive", "quiet"}
+		for _, name := range order {
+			f := thumbnail.Lookup(name)
+			fmt.Fprintf(os.Stderr, "    --%s\n    \t", f.Name)
+			fmt.Fprintf(os.Stderr, "%v (default %q)\n", f.Usage, f.DefValue)
+		}
+		fmt.Fprintf(os.Stderr, "\n  meta\n    \tCBZ metadata\n\n")
+		order = []string{"cover", "comment", "comment-body", "file-add", "file-remove"}
+		for _, name := range order {
+			f := meta.Lookup(name)
+			fmt.Fprintf(os.Stderr, "    --%s\n    \t", f.Name)
+			fmt.Fprintf(os.Stderr, "%v (default %q)\n", f.Usage, f.DefValue)
+		}
+		fmt.Fprintf(os.Stderr, "\n  version\n    \tPrint version\n\n")
+	}
+
+	if len(os.Args) < 2 {
+		flag.Usage()
+		fmt.Fprintf(os.Stderr, "no command\n")
+		os.Exit(1)
+	}
+
+	pipe := piped()
+	if pipe {
+		args = lines(os.Stdin)
+	}
+
+	switch os.Args[1] {
+	case "convert":
+		_ = convert.Parse(os.Args[2:])
+		if !pipe {
+			args = convert.Args()
+		}
+	case "cover":
+		opts.Cover = true
+		_ = cover.Parse(os.Args[2:])
+		if !pipe {
+			args = cover.Args()
+		}
+	case "thumbnail":
+		opts.Thumbnail = true
+		_ = thumbnail.Parse(os.Args[2:])
+		if !pipe {
+			args = thumbnail.Args()
+		}
+	case "meta":
+		opts.Meta = true
+		_ = meta.Parse(os.Args[2:])
+		if !pipe {
+			args = meta.Args()
+		}
+	case "version":
+		opts.Version = true
+	}
+
+	if len(args) == 0 && !opts.Version {
+		flag.Usage()
+		_, _ = fmt.Fprintf(os.Stderr, "no arguments\n")
+		os.Exit(1)
+	}
+
+	return opts, args
+}
+
+// piped checks if we have piped stdin.
+func piped() bool {
+	f, err := os.Stdin.Stat()
+	if err != nil {
+		return false
+	}
+
+	if f.Mode()&os.ModeNamedPipe == 0 {
+		return false
+	}
+
+	return true
+}
+
+// lines returns slice of lines from the reader.
+func lines(r io.Reader) []string {
+	data := make([]string, 0)
+	scanner := bufio.NewScanner(r)
+
+	for scanner.Scan() {
+		text := scanner.Text()
+		data = append(data, text)
+	}
+
+	return data
+}

go.mod

@@ -0,0 +1,52 @@
+module github.com/gen2brain/cbconvert
+
+go 1.26
+
+require (
+	github.com/anthonynsimon/bild v0.15.0
+	github.com/dsoprea/go-png-image-structure v0.0.0-20210512210324-29b889a6093d
+	github.com/dustin/go-humanize v1.0.1
+	github.com/fvbommel/sortorder v1.1.0
+	github.com/gen2brain/avif v0.5.1
+	github.com/gen2brain/go-fitz v1.24.15
+	github.com/gen2brain/jpegli v0.4.0
+	github.com/gen2brain/jpegxl v0.5.1
+	github.com/gen2brain/webp v0.6.1
+	github.com/jsummers/gobmp v0.0.0-20230614200233-a9de23ed2e25
+	github.com/mholt/archives v0.1.5
+	golang.org/x/image v0.43.0
+	golang.org/x/sync v0.21.0
+)
+
+require (
+	github.com/STARRY-S/zip v0.2.3 // indirect
+	github.com/andybalholm/brotli v1.2.1 // indirect
+	github.com/bodgit/plumbing v1.3.0 // indirect
+	github.com/bodgit/sevenzip v1.6.4 // indirect
+	github.com/bodgit/windows v1.0.1 // indirect
+	github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 // indirect
+	github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d // indirect
+	github.com/dsoprea/go-logging v0.0.0-20200710184922-b02d349568dd // indirect
+	github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349 // indirect
+	github.com/ebitengine/purego v0.10.1 // indirect
+	github.com/go-errors/errors v1.5.1 // indirect
+	github.com/golang/geo v0.0.0-20260622181633-f80708c60e82 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/jupiterrider/ffi v0.7.0 // indirect
+	github.com/klauspost/compress v1.18.6 // indirect
+	github.com/klauspost/pgzip v1.2.6 // indirect
+	github.com/mikelolasagasti/xz v1.0.1 // indirect
+	github.com/minio/minlz v1.1.1 // indirect
+	github.com/nwaples/rardecode/v2 v2.2.5 // indirect
+	github.com/pierrec/lz4/v4 v4.1.27 // indirect
+	github.com/sorairolake/lzip-go v0.3.8 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/stangelandcl/ppmd v0.1.1 // indirect
+	github.com/tetratelabs/wazero v1.12.0 // indirect
+	github.com/ulikunitz/xz v0.5.15 // indirect
+	go4.org v0.0.0-20260112195520-a5071408f32f // indirect
+	golang.org/x/net v0.56.0 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)

go.sum

@@ -0,0 +1,141 @@
+github.com/STARRY-S/zip v0.2.3 h1:luE4dMvRPDOWQdeDdUxUoZkzUIpTccdKdhHHsQJ1fm4=
+github.com/STARRY-S/zip v0.2.3/go.mod h1:lqJ9JdeRipyOQJrYSOtpNAiaesFO6zVDsE8GIGFaoSk=
+github.com/andybalholm/brotli v1.2.1 h1:R+f5xP285VArJDRgowrfb9DqL18yVK0gKAW/F+eTWro=
+github.com/andybalholm/brotli v1.2.1/go.mod h1:rzTDkvFWvIrjDXZHkuS16NPggd91W3kUSvPlQ1pLaKY=
+github.com/anthonynsimon/bild v0.15.0 h1:FzvaNLuNlAPKw1Xz7V2WYOcGIEBMj8Y6ZyAk7CI+HzA=
+github.com/anthonynsimon/bild v0.15.0/go.mod h1:qIgJ9FldkCn0iy5Ad24fzUkz5R+iJ0WfhiV+6FeCB5A=
+github.com/bodgit/plumbing v1.3.0 h1:pf9Itz1JOQgn7vEOE7v7nlEfBykYqvUYioC61TwWCFU=
+github.com/bodgit/plumbing v1.3.0/go.mod h1:JOTb4XiRu5xfnmdnDJo6GmSbSbtSyufrsyZFByMtKEs=
+github.com/bodgit/sevenzip v1.6.4 h1:iHiVJfxbrB6RF4X+snI2MpVgNBKmVfGaTqZGNlMQIU0=
+github.com/bodgit/sevenzip v1.6.4/go.mod h1:ZtNi5KNgHXeXg1G7WiF0IWSuFE2eG6lt/cTGlvuirO0=
+github.com/bodgit/windows v1.0.1 h1:tF7K6KOluPYygXa3Z2594zxlkbKPAOvqr97etrGNIz4=
+github.com/bodgit/windows v1.0.1/go.mod h1:a6JLwrB4KrTR5hBpp8FI9/9W9jJfeQ2h4XDXU74ZCdM=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 h1:2tV76y6Q9BB+NEBasnqvs7e49aEBFI8ejC89PSnWH+4=
+github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707/go.mod h1:qssHWj60/X5sZFNxpG4HBPDHVqxNm4DfnCKgrbZOT+s=
+github.com/dsnet/golib v0.0.0-20171103203638-1ea166775780/go.mod h1:Lj+Z9rebOhdfkVLjJ8T6VcRQv3SXugXy999NBtR9aFY=
+github.com/dsoprea/go-exif/v2 v2.0.0-20200321225314-640175a69fe4/go.mod h1:Lm2lMM2zx8p4a34ZemkaUV95AnMl4ZvLbCUbwOvLC2E=
+github.com/dsoprea/go-exif/v2 v2.0.0-20200604193436-ca8584a0e1c4/go.mod h1:9EXlPeHfblFFnwu5UOqmP2eoZfJyAZ2Ri/Vki33ajO0=
+github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d h1:yeH8wrJa3+8uKKDAdURHUK1ds2UvKhMqX2MiOdVeKPs=
+github.com/dsoprea/go-exif/v2 v2.0.0-20230826092837-6579e82b732d/go.mod h1:oKrjk2kb3rAR5NbtSTLUMvMSbc+k8ZosI3MaVH47noc=
+github.com/dsoprea/go-exif/v3 v3.0.0-20200717053412-08f1b6708903/go.mod h1:0nsO1ce0mh5czxGeLo4+OCZ/C6Eo6ZlMWsz7rH/Gxv8=
+github.com/dsoprea/go-exif/v3 v3.0.0-20210512043655-120bcdb2a55e/go.mod h1:cg5SNYKHMmzxsr9X6ZeLh/nfBRHHp5PngtEPcujONtk=
+github.com/dsoprea/go-logging v0.0.0-20190624164917-c4f10aab7696/go.mod h1:Nm/x2ZUNRW6Fe5C3LxdY1PyZY5wmDv/s5dkPJ/VB3iA=
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+github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349 h1:/py11NlxDaOxkT9OKN+gXgT+QOH5xj1ZRoyusfRIlo4=
+github.com/dsoprea/go-utility v0.0.0-20221003172846-a3e1774ef349/go.mod h1:KVK+/Hul09ujXAGq+42UBgCTnXkiJZRnLYdURGjQUwo=
+github.com/dsoprea/go-utility/v2 v2.0.0-20200717064901-2fccff4aa15e/go.mod h1:uAzdkPTub5Y9yQwXe8W4m2XuP0tK4a9Q/dantD0+uaU=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/ebitengine/purego v0.10.1 h1:dewVBCBT2GaMu1SrNTYxQhgQBethzfhiwvZiLGP/qyY=
+github.com/ebitengine/purego v0.10.1/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
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make.bash

@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-
-mkdir -p build
-
-CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -o build/cbconvert
-strip build/cbconvert
-
-CGO_LDFLAGS="-ldl -lltdl -lfreetype -lm -lz -static-libgcc" CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -o build/cbconvert-static --ldflags '-extldflags "-static"'
-strip build/cbconvert-static
-
-CGO_LDFLAGS="-L/usr/i686-pc-mingw32/usr/lib" \
-CGO_CFLAGS="-I/usr/i686-pc-mingw32/usr/include -Wno-poison-system-directories" \
-CGO_CXXFLAGS="-I/usr/i686-pc-mingw32/usr/include -Wno-poison-system-directories" \
-CGO_CPPFLAGS="-I/usr/i686-pc-mingw32/usr/include -Wno-poison-system-directories" \
-PKG_CONFIG=/usr/bin/i686-pc-mingw32-pkg-config \
-PKG_CONFIG_PATH=/usr/i686-pc-mingw32/usr/lib/pkgconfig \
-PKG_CONFIG_LIBDIR=/usr/i686-pc-mingw32/usr/lib/pkgconfig \
-CC="i686-pc-mingw32-gcc" CXX="i686-pc-mingw32-g++" \
-CC_FOR_TARGET=i686-pc-mingw32-gcc CXX_FOR_TARGET=i686-pc-mingw32-g++ \
-CGO_ENABLED=1 GOOS=windows GOARCH=386 go build -o build/cbconvert.exe -ldflags "-linkmode external -extldflags -static"
-i686-pc-mingw32-strip build/cbconvert.exe