Add modules

Fix typo, convertor -> converter

.github/workflows/test.yml

@@ -0,0 +1,120 @@
+on: [push, pull_request]
+name: Test
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Setup cmake
+      uses: jwlawson/actions-setup-cmake@v1.13
+      with:
+        cmake-version: '3.27.x'
+
+    - name: Update apt-get
+      run: |
+        sudo apt-get update
+
+    - name: Wget libheif
+      uses: wei/wget@v1
+      with:
+        args: https://github.com/strukturag/libheif/releases/download/v1.15.2/libheif-1.15.2.tar.gz
+    - name: Unpack libheif
+      run: |
+        tar -xpf libheif-1.15.2.tar.gz
+    - name: Install libheif dependencies
+      run: |
+        sudo apt-get install libaom-dev -y
+    - name: Configure libheif
+      working-directory: libheif-1.15.2
+      run: |
+        ./configure --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static --disable-libde265 \
+        --disable-dav1d --disable-go --enable-aom --disable-gdk-pixbuf --disable-rav1e --disable-tests --disable-x265 --disable-examples
+    - name: Install libheif
+      working-directory: libheif-1.15.2
+      run: |
+        make -j3 && sudo make install
+
+    - name: Wget lcms2
+      uses: wei/wget@v1
+      with:
+        args: https://github.com/mm2/Little-CMS/releases/download/lcms2.15/lcms2-2.15.tar.gz
+    - name: Unpack lcms2
+      run: |
+        tar -xpf lcms2-2.15.tar.gz
+    - name: Configure lcms2
+      working-directory: lcms2-2.15
+      run: |
+        ./configure --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
+    - name: Install lcms2
+      working-directory: lcms2-2.15
+      run: |
+        make -j3 && sudo make install
+
+    - name: Wget highway
+      uses: wei/wget@v1
+      with:
+        args: -O highway-1.0.5.tar.gz https://github.com/google/highway/archive/refs/tags/1.0.5.tar.gz
+    - name: Unpack highway
+      run: |
+        tar -xpf highway-1.0.5.tar.gz && mkdir -p highway-1.0.5/build
+    - name: Configure highway
+      working-directory: highway-1.0.5/build
+      run: |
+        cmake -DCMAKE_INSTALL_PREFIX=/usr -DHWY_ENABLE_TESTS=OFF -DHWY_ENABLE_EXAMPLES=OFF -DHWY_WARNINGS_ARE_ERRORS=OFF ../
+    - name: Install highway
+      working-directory: highway-1.0.5/build
+      run: |
+        make -j3 && sudo make install
+
+    - name: Wget libjxl
+      uses: wei/wget@v1
+      with:
+        args: -O libjxl-0.8.2.tar.gz https://github.com/libjxl/libjxl/archive/refs/tags/v0.8.2.tar.gz
+    - name: Unpack libjxl
+      run: |
+        tar -xpf libjxl-0.8.2.tar.gz && mkdir -p libjxl-0.8.2/build
+    - name: Configure libjxl
+      working-directory: libjxl-0.8.2/build
+      run: |
+        cmake -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DJPEGXL_ENABLE_BENCHMARK=OFF \
+        -DJPEGXL_ENABLE_COVERAGE=OFF -DJPEGXL_ENABLE_FUZZERS=OFF -DJPEGXL_ENABLE_SJPEG=OFF -DJPEGXL_WARNINGS_AS_ERRORS=OFF \
+        -DJPEGXL_ENABLE_SKCMS=OFF -DJPEGXL_ENABLE_VIEWERS=OFF -DJPEGXL_ENABLE_PLUGINS=OFF -DJPEGXL_ENABLE_DOXYGEN=OFF \
+        -DJPEGXL_ENABLE_MANPAGES=OFF -DJPEGXL_ENABLE_JNI=OFF -DJPEGXL_ENABLE_JPEGLI_LIBJPEG=OFF -DJPEGXL_ENABLE_TCMALLOC=OFF \
+        -DJPEGXL_ENABLE_EXAMPLES=OFF -DJPEGXL_ENABLE_TOOLS=OFF -DJPEGXL_ENABLE_OPENEXR=OFF -DBUILD_TESTING=OFF \
+        -DJXL_HWY_DISABLED_TARGETS_FORCED=ON -DJPEGXL_FORCE_SYSTEM_BROTLI=ON -DJPEGXL_FORCE_SYSTEM_HWY=ON ../
+    - name: Install libjxl
+      working-directory: libjxl-0.8.2/build
+      run: |
+        make -j3 && sudo make install
+
+    - name: Wget ImageMagick
+      uses: wei/wget@v1
+      with:
+        args: -O ImageMagick-7.1.1-15.tar.gz https://github.com/ImageMagick/ImageMagick/archive/refs/tags/7.1.1-15.tar.gz
+    - name: Unpack ImageMagick
+      run: |
+        tar -xpf ImageMagick-7.1.1-15.tar.gz
+    - name: Configure ImageMagick
+      working-directory: ImageMagick-7.1.1-15
+      run: |
+        ./configure --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static --enable-zero-configuration \
+        --without-frozenpaths --without-utilities --disable-hdri --disable-opencl --without-modules --without-magick-plus-plus --without-perl \
+        --without-bzlib --without-x --without-zip --with-zlib --without-dps --without-djvu --without-autotrace --without-fftw \
+        --without-fpx --without-fontconfig --without-freetype --without-gslib --without-gvc --without-jbig --without-openjp2 \
+        --without-lcms --without-lqr --without-lzma --without-openexr --without-pango --without-raw --without-rsvg --without-wmf \
+        --without-xml --disable-openmp --with-jpeg --with-heic --with-jxl --with-png --with-tiff --with-webp
+    - name: Install ImageMagick
+      working-directory: ImageMagick-7.1.1-15
+      run: |
+        make -j3 && sudo make install
+
+    - name: Install Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.21
+
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Test
+      run: go test

README.md

@@ -1,156 +1,210 @@
-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
- - 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
+<img src="cmd/cbconvert-gui/screenshots/linux-01.jpg" width="700" alt="screenshot" />
 
-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)
- - [Linux 64bit static binary](https://github.com/gen2brain/cbconvert/releases/download/0.4.0/cbconvert-0.4.0-static.tar.gz)
+* reads CBR (RAR), CBZ (ZIP), CB7 (7Z), CBT (TAR), PDF, XPS, EPUB, MOBI and plain directory
+* 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, adjust levels (Photoshop-like) 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> ...]
+* [Windows x86_64](https://github.com/gen2brain/cbconvert/releases/latest/download/cbconvert-1.0.0-windows-x86_64.zip)
+* [Linux x86_64](https://github.com/gen2brain/cbconvert/releases/latest/download/cbconvert-1.0.0-linux-x86_64.tar.gz)
+* [macOS x86_64](https://github.com/gen2brain/cbconvert/releases/latest/download/cbconvert-1.0.0-darwin-x86_64.zip)
+* [macOS aarch64](https://github.com/gen2brain/cbconvert/releases/latest/download/cbconvert-1.0.0-darwin-aarch64.zip)
 
-    Comic Book convert tool.
+[![flathub](https://dl.flathub.org/assets/badges/flathub-badge-en.png)](https://flathub.org/apps/io.github.gen2brain.cbconvert)
 
-    Flags:
-      --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
+### Using cbconvert in file managers to generate FreeDesktop thumbnails
 
-    Args:
-      <args>  filename or directory
+Copy `cbconvert` cli binary to your PATH and create file `~/.local/share/thumbnailers/cbconvert.thumbnailer`:
 
-    Commands:
-      help [<command>...]
-        Show help.
+```
+[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;
+```
+
+This is what it looks like in the PCManFM file manager:
+
+<img src="cmd/cbconvert/screenshots/thumbnails.jpg" width="700" alt="thumbnails" />
 
 
-      convert [<flags>] <args>...
-        Convert archive or document (default command)
+### Using command line app
 
-        --width=0        Image width
-        --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
-        --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
+```
+    Usage: cbconvert <command> [<flags>] [file1 dir1 ... fileOrDirN]
 
-      cover [<flags>] <args>...
-        Extract cover
 
-        --width=0     Image width
-        --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
+    Commands:
 
-      thumbnail [<flags>] <args>...
-        Extract cover thumbnail (freedesktop spec.)
+      convert
+            Convert archive or document
 
-        --width=0   Image width
-        --height=0  Image height
-        --fit       Best fit for required width and height
-        --filter=2  0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
+        --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, 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 "")
+        --levels-inmin
+            Shadow input value (default "0")
+        --levels-gamma
+            Midpoint/Gamma (default "1")
+        --levels-inmax
+            Highlight input value (default "255")
+        --levels-outmin
+            Shadow output value (default "0")
+        --levels-outmax
+            Highlight output value (default "255")
+        --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
+        --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, jxl (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")
 
-Examples
---------
+      thumbnail
+            Extract cover thumbnail (freedesktop spec.)
 
-Rescale images to 1200px for all supported files found in directory with size larger then 60MB:
+        --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")
 
-    cbconvert --recursive --width 1200 --size 60 /media/comics/Thorgal/
+      meta
+            CBZ metadata
 
-Convert all images in pdf to 4bit BMP image and save result in ~/comics directory:
+        --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(s) from archive (glob pattern, i.e. *.xml) (default "")
 
-    cbconvert --bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.pdf
+```
 
-[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.
+### Examples
 
-Generate thumbnails by freedesktop specification in ~/.thumbnails/normal directory with width 512:
+* Rescale images to 1200px for all supported files found in a directory with a size larger than 60MB:
 
-    cbconvert thumbnail --width 512 --outdir ~/.thumbnails/normal /media/comics/GrooTheWanderer/
+`cbconvert --recursive --width 1200 --size 60 /media/comics/Thorgal/`
 
-Extract covers to ~/covers dir for all supported files found in directory, Lanczos algorithm is used for resizing:
+* Convert all images in pdf to 4bit BMP images and save the result in ~/comics directory:
 
-    cbconvert cover --outdir ~/covers --filter=7 /media/comics/GrooTheWanderer/
+`cbconvert --format bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.pdf`
 
-Compile
--------
+[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.
 
-Install imagemagick dev packages:
+* Extract covers to ~/covers dir for all supported files found in the directory, Lanczos algorithm is used for resizing:
 
-    apt-get install libmagickcore-dev libmagickwand-dev
+`cbconvert cover --outdir ~/covers --filter=7 /media/comics/GrooTheWanderer/`
 
-Compile latest MuPDF:
+* Convert all images to AVIF format:
 
-    git clone git://git.ghostscript.com/mupdf.git && cd mupdf
-    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
+`cbconvert --format avif --quality 50 --width 1280 --outdir ~/comics /media/comics/Misc/`
 
-Compile unarr library:
+### Quality settings
 
-    git clone https://github.com/zeniko/unarr && cd unarr
-    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
+This table maps quality settings for JPEG to the respective AVIF and WEBP quality settings:
 
-Install dependencies:
+|              |    |    |    |    |
+|--------------|----|----|----|----|
+| JPEG quality | 50 | 60 | 70 | 80 |
+| AVIF quality | 48 | 51 | 56 | 64 |
+| WEBP quality | 55 | 64 | 72 | 82 |
 
-    go get github.com/cheggaaa/pb
-    go get github.com/disintegration/imaging
-    go get github.com/gen2brain/go-fitz
-    go get github.com/gen2brain/go-unarr
-    go get github.com/gographics/imagick/imagick
-    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
+### Compile
 
-Install go package:
+Install ImageMagick7 (with libheif/libjxl support) and MuPDF libraries and headers and then install to GOBIN:
 
-    go get github.com/gen2brain/cbconvert
-    go install github.com/gen2brain/cbconvert
+`go install -tags extlib github.com/gen2brain/cbconvert/cmd/cbconvert@latest`
+
+For GUI app, check [IUP requirements](https://github.com/gen2brain/iup-go), and then install:
+
+`go install -tags extlib github.com/gen2brain/cbconvert/cmd/cbconvert-gui@latest`

cbconvert_arch.go

@@ -0,0 +1,422 @@
+package cbconvert
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+
+	"github.com/gen2brain/go-unarr"
+)
+
+// 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 {
+		err := os.MkdirAll(filepath.Join(c.Opts.OutDir, filepath.Dir(fileName)), 0755)
+		if err != nil {
+			return fmt.Errorf("archiveSaveZip: %w", err)
+		}
+
+		zipName = filepath.Join(c.Opts.OutDir, filepath.Dir(fileName), 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 {
+		err := os.MkdirAll(filepath.Join(c.Opts.OutDir, filepath.Dir(fileName)), 0755)
+		if err != nil {
+			return fmt.Errorf("archiveSaveTar: %w", err)
+		}
+
+		tarName = filepath.Join(c.Opts.OutDir, filepath.Dir(fileName), 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
+}
+
+// archiveList lists contents of archive.
+func (c *Converter) archiveList(fileName string) ([]string, error) {
+	var contents []string
+
+	archive, err := unarr.NewArchive(fileName)
+	if err != nil {
+		return contents, fmt.Errorf("archiveList: %w", err)
+	}
+	defer archive.Close()
+
+	contents, err = archive.List()
+	if err != nil {
+		return contents, fmt.Errorf("archiveList: %w", err)
+	}
+
+	return contents, 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 file to 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_func.go

@@ -0,0 +1,184 @@
+package cbconvert
+
+import (
+	"fmt"
+	"image"
+	"image/color"
+	"image/draw"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// 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
+}
+
+// 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 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"}
+	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
+}
+
+// isGrayScale checks if image is grayscale.
+func isGrayScale(img image.Image) bool {
+	model := img.ColorModel()
+	if model == color.GrayModel || model == color.Gray16Model {
+		return true
+	}
+
+	return false
+}
+
+// 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_test.go

@@ -0,0 +1,110 @@
+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)
+
+	conv.Initialize()
+	defer conv.Terminate()
+
+	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)
+
+	conv.Initialize()
+	defer conv.Terminate()
+
+	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)
+
+	conv.Initialize()
+	defer conv.Terminate()
+
+	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/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=cbconvert
+Terminal=false
+Type=Application
+StartupNotify=true
+Categories=Graphics;Utility;

cmd/cbconvert-gui/dist/linux/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;

cmd/cbconvert-gui/dist/linux/flatpak/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
+Icon=io.github.gen2brain.cbconvert
+Terminal=false
+Type=Application
+StartupNotify=true
+Categories=Graphics;

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

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <id>io.github.gen2brain.cbconvert</id>
+  
+  <name>CBconvert</name>
+  <developer_name>Milan Nikolic</developer_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>
+  
+  <launchable type="desktop-id">io.github.gen2brain.cbconvert.desktop</launchable>
+  <screenshots>
+    <screenshot type="default">
+      <image>https://raw.githubusercontent.com/gen2brain/cbconvert/master/cmd/cbconvert-gui/screenshots/linux-02.jpg</image>
+    </screenshot>
+    <screenshot>
+      <image>https://raw.githubusercontent.com/gen2brain/cbconvert/master/cmd/cbconvert-gui/screenshots/linux-01.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="1.0.4" 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/flatpak/modules.txt

@@ -0,0 +1,105 @@
+# git.sr.ht/~jackmordaunt/go-libwebp v1.1.0
+## explicit; go 1.21
+git.sr.ht/~jackmordaunt/go-libwebp/lib/common
+git.sr.ht/~jackmordaunt/go-libwebp/lib/dynamic/webp
+git.sr.ht/~jackmordaunt/go-libwebp/lib/transpiled/webp
+git.sr.ht/~jackmordaunt/go-libwebp/webp
+# github.com/disintegration/imaging v1.6.2
+## explicit
+github.com/disintegration/imaging
+# github.com/dustin/go-humanize v1.0.1
+## explicit; go 1.16
+github.com/dustin/go-humanize
+# github.com/ebitengine/purego v0.5.2
+## 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/cbconvert v1.0.4-0.20240208144735-a8084ed89758
+## explicit; go 1.21
+github.com/gen2brain/cbconvert
+# github.com/gen2brain/go-fitz v1.23.7
+## explicit; go 1.20
+github.com/gen2brain/go-fitz
+# github.com/gen2brain/go-unarr v0.2.0
+## explicit; go 1.19
+github.com/gen2brain/go-unarr
+github.com/gen2brain/go-unarr/unarrc
+# github.com/gen2brain/iup-go/iup v0.0.0-20230906093706-8b037fe6a7bd
+## explicit; go 1.19
+github.com/gen2brain/iup-go/iup
+github.com/gen2brain/iup-go/iup/manifest
+# github.com/godbus/dbus/v5 v5.1.0
+## explicit; go 1.12
+github.com/godbus/dbus/v5
+# github.com/google/uuid v1.6.0
+## explicit
+github.com/google/uuid
+# github.com/mattn/go-isatty v0.0.20
+## explicit; go 1.15
+github.com/mattn/go-isatty
+# github.com/ncruces/go-strftime v0.1.9
+## explicit; go 1.17
+github.com/ncruces/go-strftime
+# github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec
+## explicit; go 1.12
+github.com/remyoudompheng/bigfft
+# golang.org/x/image v0.15.0
+## explicit; go 1.18
+golang.org/x/image/bmp
+golang.org/x/image/ccitt
+golang.org/x/image/riff
+golang.org/x/image/tiff
+golang.org/x/image/tiff/lzw
+golang.org/x/image/vp8
+golang.org/x/image/vp8l
+golang.org/x/image/webp
+# golang.org/x/sync v0.6.0
+## explicit; go 1.18
+golang.org/x/sync/errgroup
+# golang.org/x/sys v0.17.0
+## explicit; go 1.18
+golang.org/x/sys/unix
+golang.org/x/sys/windows
+# gopkg.in/gographics/imagick.v3 v3.5.1
+## explicit; go 1.13
+gopkg.in/gographics/imagick.v3/imagick
+gopkg.in/gographics/imagick.v3/imagick/types
+# modernc.org/libc v1.41.0
+## explicit; go 1.20
+modernc.org/libc
+modernc.org/libc/errno
+modernc.org/libc/fcntl
+modernc.org/libc/fts
+modernc.org/libc/grp
+modernc.org/libc/honnef.co/go/netdb
+modernc.org/libc/langinfo
+modernc.org/libc/limits
+modernc.org/libc/netdb
+modernc.org/libc/netinet/in
+modernc.org/libc/poll
+modernc.org/libc/pthread
+modernc.org/libc/pwd
+modernc.org/libc/signal
+modernc.org/libc/stdio
+modernc.org/libc/stdlib
+modernc.org/libc/sys/socket
+modernc.org/libc/sys/stat
+modernc.org/libc/sys/types
+modernc.org/libc/termios
+modernc.org/libc/time
+modernc.org/libc/unistd
+modernc.org/libc/utime
+modernc.org/libc/uuid
+modernc.org/libc/uuid/uuid
+modernc.org/libc/wctype
+# modernc.org/mathutil v1.6.0
+## explicit; go 1.18
+modernc.org/mathutil
+# modernc.org/memory v1.7.2
+## explicit; go 1.18
+modernc.org/memory

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>com.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 +1,30 @@
+module github.com/gen2brain/cbconvert/cmd/cbconvert-gui
+
+go 1.21
+
+require (
+	github.com/gen2brain/cbconvert v1.0.4-0.20240208144735-a8084ed89758
+	github.com/gen2brain/iup-go/iup v0.0.0-20230906093706-8b037fe6a7bd
+	github.com/godbus/dbus/v5 v5.1.0
+)
+
+require (
+	git.sr.ht/~jackmordaunt/go-libwebp v1.1.0 // indirect
+	github.com/disintegration/imaging v1.6.2 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/ebitengine/purego v0.5.2 // indirect
+	github.com/fvbommel/sortorder v1.1.0 // indirect
+	github.com/gen2brain/go-fitz v1.23.7 // indirect
+	github.com/gen2brain/go-unarr v0.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/image v0.15.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.17.0 // indirect
+	gopkg.in/gographics/imagick.v3 v3.5.1 // indirect
+	modernc.org/libc v1.41.0 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.7.2 // indirect
+)

cmd/cbconvert-gui/go.sum

@@ -0,0 +1,45 @@
+git.sr.ht/~jackmordaunt/go-libwebp v1.1.0 h1:rfDv89tb6OuNp8f1TyprOZWaeC/TxqaYvLCI6nHKBY8=
+git.sr.ht/~jackmordaunt/go-libwebp v1.1.0/go.mod h1:8557wZRj8KWRPBM+osAuAXVVR5nVURZ3SCG5rnACBdE=
+github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
+github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
+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 v0.5.2 h1:r2MQEtkGzZ4LRtFZVAg5bjYKnUbxxloaeuGxH0t7qfs=
+github.com/ebitengine/purego v0.5.2/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
+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/cbconvert v1.0.4-0.20240208144735-a8084ed89758 h1:VXWir2Nq5qkXuIeoCTavOlQ7j2Yab0vIJe1mvKsLe3I=
+github.com/gen2brain/cbconvert v1.0.4-0.20240208144735-a8084ed89758/go.mod h1:jtc/vKGuG66vIemtQc6Ge69FXo33hX+gFvGtEP/z/SM=
+github.com/gen2brain/go-fitz v1.23.7 h1:HPhzEVzmOINvCKqQgB/DwMzYh4ArIgy3tMwq1eJTcbg=
+github.com/gen2brain/go-fitz v1.23.7/go.mod h1:HU04vc+RisUh/kvEd2pB0LAxmK1oyXdN4ftyshUr9rQ=
+github.com/gen2brain/go-unarr v0.2.0 h1:sYKSjbeNSuZgudd59iGAbMbr113XRFoA7Rt9XWA+QVE=
+github.com/gen2brain/go-unarr v0.2.0/go.mod h1:hoHheVuf0KT8/hfvkEL7GMwj2h7fq0lF72NdyySdr3c=
+github.com/gen2brain/iup-go/iup v0.0.0-20230906093706-8b037fe6a7bd h1:k1EaRqSEu/2eahOBY44uYZevryE1HQBz0t7RYCufnHI=
+github.com/gen2brain/iup-go/iup v0.0.0-20230906093706-8b037fe6a7bd/go.mod h1:HeMeojpQFldBWCMmU5dkmU640AdEcS+SPyEVLMJjjrw=
+github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
+github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
+github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
+golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
+golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/gographics/imagick.v3 v3.5.1 h1:58JqK0UCx5RfvbRggF5FKuK6jHwAtTQopUxK8mzFa40=
+gopkg.in/gographics/imagick.v3 v3.5.1/go.mod h1:+Q9nyA2xRZXrDyTtJ/eko+8V/5E7bWYs08ndkZp8UmA=
+modernc.org/libc v1.41.0 h1:g9YAc6BkKlgORsUWj+JwqoB1wU3o4DE3bM3yvA3k+Gk=
+modernc.org/libc v1.41.0/go.mod h1:w0eszPsiXoOnoMJgrXjglgLuDy/bt5RR4y3QzUUeodY=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.7.2 h1:Klh90S215mmH8c9gO98QxQFsY+W451E8AnzjoE2ee1E=
+modernc.org/memory v1.7.2/go.mod h1:NO4NVCQy0N7ln+T9ngWqOQfi7ley4vpwvARR+Hjw95E=

cmd/cbconvert-gui/main_filedlg.go

@@ -0,0 +1,65 @@
+//go:build !portal
+
+package main
+
+import (
+	"path/filepath"
+	"strings"
+
+	"github.com/gen2brain/iup-go/iup"
+)
+
+func fileDlg(title string, multiple, directory bool) ([]string, error) {
+	ret := make([]string, 0)
+
+	dlg := iup.FileDlg()
+	defer dlg.Destroy()
+
+	if !directory {
+		mf := "YES"
+		if !multiple {
+			mf = "NO"
+		}
+
+		dlg.SetAttributes(map[string]string{
+			"DIALOGTYPE":    "OPEN",
+			"MULTIPLEFILES": mf,
+			"EXTFILTER":     "Comic Files|*.rar;*.zip;*.7z;*.tar;*.cbr;*.cbz;*.cb7;*.cbt;*.pdf;*.epub;*.mobi;*.xps|",
+			"FILTER":        "*.cb*", // for Motif
+			"TITLE":         title,
+		})
+	} else {
+		dlg.SetAttributes(map[string]string{
+			"DIALOGTYPE": "DIR",
+			"TITLE":      title,
+		})
+	}
+
+	iup.Popup(dlg, iup.CENTERPARENT, iup.CENTERPARENT)
+
+	if dlg.GetInt("STATUS") == 0 {
+		if !directory {
+			value := dlg.GetAttribute("VALUE")
+			sp := strings.Split(value, "|")
+
+			if strings.ToLower(iup.GetGlobal("DRIVER")) == "cocoa" {
+				for _, file := range sp {
+					ret = append(ret, file)
+				}
+			} else {
+				if len(sp) > 1 {
+					for _, file := range sp[1 : len(sp)-1] {
+						ret = append(ret, filepath.Join(sp[0], file))
+					}
+				} else {
+					ret = append(ret, value)
+				}
+			}
+		} else {
+			value := dlg.GetAttribute("VALUE")
+			ret = append(ret, value)
+		}
+	}
+
+	return ret, nil
+}

cmd/cbconvert-gui/main_filedlg_portal.go

@@ -0,0 +1,105 @@
+//go:build portal
+
+package main
+
+import (
+	"net/url"
+
+	"github.com/godbus/dbus/v5"
+)
+
+func fileDlg(title string, multiple, directory bool) ([]string, error) {
+	ret := make([]string, 0)
+
+	conn, err := dbus.ConnectSessionBus()
+	if err != nil {
+		return ret, err
+	}
+	defer conn.Close()
+
+	dest := "org.freedesktop.portal.Desktop"
+	path := "/org/freedesktop/portal/desktop"
+	resp := "org.freedesktop.portal.Request.Response"
+
+	if err = conn.AddMatchSignal(
+		dbus.WithMatchInterface(dest),
+		dbus.WithMatchObjectPath(dbus.ObjectPath(path)),
+		dbus.WithMatchSender(conn.Names()[0]),
+	); err != nil {
+		return ret, err
+	}
+
+	c := make(chan *dbus.Signal, 10)
+	conn.Signal(c)
+
+	type Item struct {
+		Index  uint32
+		Filter string
+	}
+
+	type Filter struct {
+		Title   string
+		Filters []Item
+	}
+
+	filters := []Filter{
+		{
+			"Comic Files",
+			[]Item{
+				Item{0, "*.rar"},
+				Item{0, "*.zip"},
+				Item{0, "*.7z"},
+				Item{0, "*.tar"},
+				Item{0, "*.cbr"},
+				Item{0, "*.cbz"},
+				Item{0, "*.cb7"},
+				Item{0, "*.cbt"},
+				Item{0, "*.pdf"},
+				Item{0, "*.epub"},
+				Item{0, "*.mobi"},
+				Item{0, "*.xps"},
+			},
+		},
+	}
+
+	opts := map[string]any{
+		"multiple":  multiple,
+		"directory": directory,
+	}
+
+	if !directory {
+		opts["filters"] = filters
+	}
+
+	obj := conn.Object(dest, dbus.ObjectPath(path))
+	call := obj.Call("org.freedesktop.portal.FileChooser.OpenFile", 0, "", title, opts)
+	if call.Err != nil {
+		return ret, call.Err
+	}
+
+	for v := range c {
+		if v.Name != resp {
+			continue
+		}
+
+		status := v.Body[0].(uint32)
+
+		if status == 0 {
+			m := v.Body[1].(map[string]dbus.Variant)
+			uris := m["uris"].Value().([]string)
+
+			for _, uri := range uris {
+				u, err := url.ParseRequestURI(uri)
+				if err != nil {
+					return ret, err
+				}
+
+				ret = append(ret, u.Path)
+			}
+		}
+
+		break
+	}
+
+	return ret, nil
+}

cmd/cbconvert-gui/make.bash

@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+
+GLIBC_x86_64="/usr/x86_64-pc-linux-gnu-static"
+MINGW_x86_64="/usr/x86_64-w64-mingw32"
+MACOS_x86_64="/usr/x86_64-apple-darwin"
+MACOS_aarch64="/usr/aarch64-apple-darwin"
+
+VERSION="$(git --git-dir ../../.git describe --tags --abbrev=0 2>/dev/null || echo '1.0.0')"
+
+BUILDDIR="cbconvert-gui-${VERSION}"
+
+mkdir -p "${BUILDDIR}"
+CC=x86_64-pc-linux-gnu-gcc \
+PKG_CONFIG="x86_64-pc-linux-gnu-pkg-config" \
+PKG_CONFIG_PATH="$GLIBC_x86_64/usr/lib64/pkgconfig" \
+PKG_CONFIG_LIBDIR="$GLIBC_x86_64/usr/lib64/pkgconfig" \
+CGO_CFLAGS="-I$GLIBC_x86_64/usr/include" \
+CGO_LDFLAGS="-L$GLIBC_x86_64/usr/lib64" \
+CGO_ENABLED=1 GOOS=linux GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -x -o "${BUILDDIR}"/cbconvert-gui -ldflags "-s -w -X main.appVersion=${VERSION}" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && tar -czf "${BUILDDIR}-linux-x86_64.tar.gz" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+mkdir -p "${BUILDDIR}"
+CC=x86_64-pc-linux-gnu-gcc \
+PKG_CONFIG="x86_64-pc-linux-gnu-pkg-config" \
+PKG_CONFIG_PATH="$GLIBC_x86_64/usr/lib64/pkgconfig" \
+PKG_CONFIG_LIBDIR="$GLIBC_x86_64/usr/lib64/pkgconfig" \
+CGO_CFLAGS="-I$GLIBC_x86_64/usr/include" \
+CGO_LDFLAGS="-L$GLIBC_x86_64/usr/lib64 -lxcb -lICE -lXdmcp -lXau -lSM" \
+CGO_ENABLED=1 GOOS=linux GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig motif' -v -o "${BUILDDIR}"/cbconvert-gui-motif -ldflags "-s -w -linkmode external -X main.appVersion=${VERSION} '-extldflags=-static'" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && tar -czf "${BUILDDIR}-linux-x86_64-motif.tar.gz" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+mkdir -p "${BUILDDIR}"
+CC=x86_64-w64-mingw32-gcc \
+PKG_CONFIG="/usr/bin/x86_64-w64-mingw32-pkg-config" \
+PKG_CONFIG_PATH="$MINGW_x86_64/usr/lib/pkgconfig" \
+PKG_CONFIG_LIBDIR="$MINGW_x86_64/usr/lib/pkgconfig" \
+CGO_CFLAGS="-I$MINGW_x86_64/usr/include" \
+CGO_LDFLAGS="-L$MINGW_x86_64/usr/lib" \
+CGO_ENABLED=1 GOOS=windows GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/cbconvert-gui.exe -ldflags "-s -w -X main.appVersion=${VERSION} -H=windowsgui '-extldflags=-static -Wl,--allow-multiple-definition'" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && zip -rq "${BUILDDIR}-windows-x86_64.zip" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+export OSXCROSS_PKG_CONFIG_USE_NATIVE_VARIABLES=1
+mkdir -p "${BUILDDIR}"
+cp -r dist/macos/CBconvert.app "${BUILDDIR}"
+PATH=${PATH}:${MACOS_x86_64}/bin \
+CC=x86_64-apple-darwin21.1-clang \
+PKG_CONFIG="x86_64-apple-darwin21.1-pkg-config" \
+PKG_CONFIG_PATH="$MACOS_x86_64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+PKG_CONFIG_LIBDIR="$MACOS_x86_64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+CGO_CFLAGS="-I$MACOS_x86_64/usr/include -I$MACOS_x86_64/macports/pkgs/opt/local/include" \
+CGO_LDFLAGS="-L$MACOS_x86_64/SDK/MacOSX12.1.sdk/usr/lib -L$MACOS_x86_64/macports/pkgs/opt/local/lib -mmacosx-version-min=10.15" \
+CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/CBconvert.app/Contents/MacOS/cbconvert-gui -ldflags "-linkmode external -s -w -X main.appVersion=${VERSION}" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && zip -rq "${BUILDDIR}-darwin-x86_64.zip" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+export OSXCROSS_PKG_CONFIG_USE_NATIVE_VARIABLES=1
+mkdir -p "${BUILDDIR}"
+cp -r dist/macos/CBconvert.app "${BUILDDIR}"
+PATH=${PATH}:${MACOS_aarch64}/bin \
+CC=aarch64-apple-darwin21.1-clang \
+PKG_CONFIG="aarch64-apple-darwin21.1-pkg-config" \
+PKG_CONFIG_PATH="$MACOS_aarch64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+PKG_CONFIG_LIBDIR="$MACOS_aarch64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+CGO_CFLAGS="-I$MACOS_aarch64/usr/include -I$MACOS_aarch64/macports/pkgs/opt/local/include" \
+CGO_LDFLAGS="-L$MACOS_aarch64/SDK/MacOSX12.1.sdk/usr/lib -L$MACOS_aarch64/macports/pkgs/opt/local/lib -mmacosx-version-min=10.15" \
+CGO_ENABLED=1 GOOS=darwin GOARCH=arm64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/CBconvert.app/Contents/MacOS/cbconvert-gui -ldflags "-linkmode external -s -w -X main.appVersion=${VERSION}" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && zip -rq "${BUILDDIR}-darwin-aarch64.zip" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"

cmd/cbconvert-gui/screenshots/README.md

@@ -0,0 +1,13 @@
+## Screenshots
+
+Windows  
+<img src="windows-01.jpg" width="700" title="Windows" alt="Windows" />
+
+Linux  
+<img src="linux-02.jpg" width="700" title="Linux" alt="Linux" />
+
+macOS  
+<img src="macos-01.jpg" width="700" title="macOS" alt="macOS" />
+
+Linux Motif  
+<img src="motif-01.jpg" width="700" title="Linux Motif" alt="Linux Motif" />

cmd/cbconvert/go.mod

@@ -0,0 +1,34 @@
+module github.com/gen2brain/cbconvert/cmd/cbconvert
+
+go 1.21
+
+require (
+	github.com/gen2brain/cbconvert v1.0.4-0.20240208144735-a8084ed89758
+	github.com/schollz/progressbar/v3 v3.13.1
+	github.com/spf13/pflag v1.0.5
+)
+
+require (
+	git.sr.ht/~jackmordaunt/go-libwebp v1.1.0 // indirect
+	github.com/disintegration/imaging v1.6.2 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/ebitengine/purego v0.5.2 // indirect
+	github.com/fvbommel/sortorder v1.1.0 // indirect
+	github.com/gen2brain/go-fitz v1.23.7 // indirect
+	github.com/gen2brain/go-unarr v0.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	github.com/rivo/uniseg v0.3.4 // indirect
+	golang.org/x/image v0.15.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.17.0 // indirect
+	golang.org/x/term v0.6.0 // indirect
+	gopkg.in/gographics/imagick.v3 v3.5.1 // indirect
+	modernc.org/libc v1.41.0 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.7.2 // indirect
+)

cmd/cbconvert/go.sum

@@ -0,0 +1,66 @@
+git.sr.ht/~jackmordaunt/go-libwebp v1.1.0 h1:rfDv89tb6OuNp8f1TyprOZWaeC/TxqaYvLCI6nHKBY8=
+git.sr.ht/~jackmordaunt/go-libwebp v1.1.0/go.mod h1:8557wZRj8KWRPBM+osAuAXVVR5nVURZ3SCG5rnACBdE=
+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/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
+github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
+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 v0.5.2 h1:r2MQEtkGzZ4LRtFZVAg5bjYKnUbxxloaeuGxH0t7qfs=
+github.com/ebitengine/purego v0.5.2/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
+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/cbconvert v1.0.4-0.20240208144735-a8084ed89758 h1:VXWir2Nq5qkXuIeoCTavOlQ7j2Yab0vIJe1mvKsLe3I=
+github.com/gen2brain/cbconvert v1.0.4-0.20240208144735-a8084ed89758/go.mod h1:jtc/vKGuG66vIemtQc6Ge69FXo33hX+gFvGtEP/z/SM=
+github.com/gen2brain/go-fitz v1.23.7 h1:HPhzEVzmOINvCKqQgB/DwMzYh4ArIgy3tMwq1eJTcbg=
+github.com/gen2brain/go-fitz v1.23.7/go.mod h1:HU04vc+RisUh/kvEd2pB0LAxmK1oyXdN4ftyshUr9rQ=
+github.com/gen2brain/go-unarr v0.2.0 h1:sYKSjbeNSuZgudd59iGAbMbr113XRFoA7Rt9XWA+QVE=
+github.com/gen2brain/go-unarr v0.2.0/go.mod h1:hoHheVuf0KT8/hfvkEL7GMwj2h7fq0lF72NdyySdr3c=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213/go.mod h1:vNUNkEQ1e29fT/6vq2aBdFsgNPmy8qMdSay1npru+Sw=
+github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db h1:62I3jR2EmQ4l5rM/4FEfDWcRD+abF5XlKShorW5LRoQ=
+github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw=
+github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
+github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.3.4 h1:3Z3Eu6FGHZWSfNKJTOUiPatWwfc7DzJRU04jFUqJODw=
+github.com/rivo/uniseg v0.3.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/schollz/progressbar/v3 v3.13.1 h1:o8rySDYiQ59Mwzy2FELeHY5ZARXZTVJC7iHD6PEFUiE=
+github.com/schollz/progressbar/v3 v3.13.1/go.mod h1:xvrbki8kfT1fzWzBT/UZd9L6GA+jdL7HAgq2RFnO6fQ=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
+golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
+golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.6.0 h1:clScbb1cHjoCkyRbWwBEUZ5H/tIFu5TAXIqaZD0Gcjw=
+golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/gographics/imagick.v3 v3.5.1 h1:58JqK0UCx5RfvbRggF5FKuK6jHwAtTQopUxK8mzFa40=
+gopkg.in/gographics/imagick.v3 v3.5.1/go.mod h1:+Q9nyA2xRZXrDyTtJ/eko+8V/5E7bWYs08ndkZp8UmA=
+modernc.org/libc v1.41.0 h1:g9YAc6BkKlgORsUWj+JwqoB1wU3o4DE3bM3yvA3k+Gk=
+modernc.org/libc v1.41.0/go.mod h1:w0eszPsiXoOnoMJgrXjglgLuDy/bt5RR4y3QzUUeodY=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.7.2 h1:Klh90S215mmH8c9gO98QxQFsY+W451E8AnzjoE2ee1E=
+modernc.org/memory v1.7.2/go.mod h1:NO4NVCQy0N7ln+T9ngWqOQfi7ley4vpwvARR+Hjw95E=

cmd/cbconvert/main.go

@@ -0,0 +1,328 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"runtime/debug"
+	"syscall"
+
+	"github.com/gen2brain/cbconvert"
+	pb "github.com/schollz/progressbar/v3"
+	flag "github.com/spf13/pflag"
+)
+
+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)
+	}
+
+	conv.Initialize()
+	defer conv.Terminate()
+
+	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.SortFlags = false
+	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.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.IntVar(&opts.LevelsInMin, "levels-inmin", 0, "Shadow input value")
+	convert.Float64Var(&opts.LevelsGamma, "levels-gamma", 1.0, "Midpoint/Gamma")
+	convert.IntVar(&opts.LevelsInMax, "levels-inmax", 255, "Highlight input value")
+	convert.IntVar(&opts.LevelsOutMin, "levels-outmin", 0, "Shadow output value")
+	convert.IntVar(&opts.LevelsOutMax, "levels-outmax", 255, "Highlight output value")
+	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.SortFlags = false
+	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.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.SortFlags = false
+	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.SortFlags = false
+	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")
+		convert.VisitAll(func(f *flag.Flag) {
+			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")
+		cover.VisitAll(func(f *flag.Flag) {
+			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")
+		thumbnail.VisitAll(func(f *flag.Flag) {
+			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")
+		meta.VisitAll(func(f *flag.Flag) {
+			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 a 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 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
+}

cmd/cbconvert/make.bash

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+
+GLIBC_x86_64="/usr/x86_64-pc-linux-gnu-static"
+MINGW_x86_64="/usr/x86_64-w64-mingw32"
+MACOS_x86_64="/usr/x86_64-apple-darwin"
+MACOS_aarch64="/usr/aarch64-apple-darwin"
+
+VERSION="$(git --git-dir ../../.git describe --tags --abbrev=0 2>/dev/null || echo '1.0.0')"
+
+BUILDDIR="cbconvert-${VERSION}"
+
+mkdir -p "${BUILDDIR}"
+CC=x86_64-pc-linux-gnu-gcc \
+PKG_CONFIG="x86_64-pc-linux-gnu-pkg-config" \
+PKG_CONFIG_PATH="$GLIBC_x86_64/usr/lib64/pkgconfig" \
+PKG_CONFIG_LIBDIR="$GLIBC_x86_64/usr/lib64/pkgconfig" \
+CGO_CFLAGS="-I$GLIBC_x86_64/usr/include" \
+CGO_LDFLAGS="-L$GLIBC_x86_64/usr/lib64" \
+CGO_ENABLED=1 GOOS=linux GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/cbconvert -ldflags "-linkmode external -s -w -X main.appVersion=${VERSION} '-extldflags=-static'" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && tar -czf "${BUILDDIR}-linux-x86_64.tar.gz" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+mkdir -p "${BUILDDIR}"
+CC=x86_64-w64-mingw32-gcc \
+PKG_CONFIG="/usr/bin/x86_64-w64-mingw32-pkg-config" \
+PKG_CONFIG_PATH="$MINGW_x86_64/usr/lib/pkgconfig" \
+PKG_CONFIG_LIBDIR="$MINGW_x86_64/usr/lib/pkgconfig" \
+CGO_CFLAGS="-I$MINGW_x86_64/usr/include" \
+CGO_LDFLAGS="-L$MINGW_x86_64/usr/lib -ljxl -ljxl_dec -ljxl_profiler -ljxl_threads" \
+CGO_ENABLED=1 GOOS=windows GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/cbconvert.exe -ldflags "-s -w -X main.appVersion=${VERSION} '-extldflags=-static -Wl,--allow-multiple-definition'" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && zip -rq "${BUILDDIR}-windows-x86_64.zip" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+export OSXCROSS_PKG_CONFIG_USE_NATIVE_VARIABLES=1
+mkdir -p "${BUILDDIR}"
+PATH=${PATH}:${MACOS_x86_64}/bin \
+CC=x86_64-apple-darwin21.1-clang \
+PKG_CONFIG="x86_64-apple-darwin21.1-pkg-config" \
+PKG_CONFIG_PATH="$MACOS_x86_64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+PKG_CONFIG_LIBDIR="$MACOS_x86_64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+CGO_CFLAGS="-I$MACOS_x86_64/usr/include -I$MACOS_x86_64/macports/pkgs/opt/local/include" \
+CGO_LDFLAGS="-L$MACOS_x86_64/SDK/MacOSX12.1.sdk/usr/lib -L$MACOS_x86_64/macports/pkgs/opt/local/lib -mmacosx-version-min=10.15" \
+CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/cbconvert -ldflags "-linkmode external -s -w -X main.appVersion=${VERSION}" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && zip -rq "${BUILDDIR}-darwin-x86_64.zip" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"
+
+export OSXCROSS_PKG_CONFIG_USE_NATIVE_VARIABLES=1
+mkdir -p "${BUILDDIR}"
+PATH=${PATH}:${MACOS_aarch64}/bin \
+CC=aarch64-apple-darwin21.1-clang \
+PKG_CONFIG="aarch64-apple-darwin21.1-pkg-config" \
+PKG_CONFIG_PATH="$MACOS_aarch64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+PKG_CONFIG_LIBDIR="$MACOS_aarch64/SDK/MacOSX12.1.sdk/usr/lib/pkgconfig" \
+CGO_CFLAGS="-I$MACOS_aarch64/usr/include -I$MACOS_aarch64/macports/pkgs/opt/local/include" \
+CGO_LDFLAGS="-L$MACOS_aarch64/SDK/MacOSX12.1.sdk/usr/lib -L$MACOS_aarch64/macports/pkgs/opt/local/lib -mmacosx-version-min=10.15" \
+CGO_ENABLED=1 GOOS=darwin GOARCH=arm64 \
+go build -trimpath -tags 'extlib pkgconfig' -v -o "${BUILDDIR}"/cbconvert -ldflags "-linkmode external -s -w -X main.appVersion=${VERSION}" && \
+cp ../../README.md ../../AUTHORS ../../COPYING "${BUILDDIR}" && zip -rq "${BUILDDIR}-darwin-aarch64.zip" "${BUILDDIR}"
+rm -rf "${BUILDDIR}"

go.mod

@@ -0,0 +1,26 @@
+module github.com/gen2brain/cbconvert
+
+go 1.21
+
+require (
+	git.sr.ht/~jackmordaunt/go-libwebp v1.1.0
+	github.com/disintegration/imaging v1.6.2
+	github.com/dustin/go-humanize v1.0.1
+	github.com/fvbommel/sortorder v1.1.0
+	github.com/gen2brain/go-fitz v1.23.7
+	github.com/gen2brain/go-unarr v0.2.0
+	golang.org/x/image v0.15.0
+	golang.org/x/sync v0.6.0
+	gopkg.in/gographics/imagick.v3 v3.5.1
+)
+
+require (
+	github.com/ebitengine/purego v0.5.1 // indirect
+	github.com/google/uuid v1.3.1 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	modernc.org/libc v1.24.1 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.7.2 // indirect
+)

go.sum

@@ -0,0 +1,37 @@
+git.sr.ht/~jackmordaunt/go-libwebp v1.1.0 h1:rfDv89tb6OuNp8f1TyprOZWaeC/TxqaYvLCI6nHKBY8=
+git.sr.ht/~jackmordaunt/go-libwebp v1.1.0/go.mod h1:8557wZRj8KWRPBM+osAuAXVVR5nVURZ3SCG5rnACBdE=
+github.com/disintegration/imaging v1.6.2 h1:w1LecBlG2Lnp8B3jk5zSuNqd7b4DXhcjwek1ei82L+c=
+github.com/disintegration/imaging v1.6.2/go.mod h1:44/5580QXChDfwIclfc/PCwrr44amcmDAg8hxG0Ewe4=
+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 v0.5.1 h1:hNunhThpOf1vzKl49v6YxIsXLhl92vbBEv1/2Ez3ZrY=
+github.com/ebitengine/purego v0.5.1/go.mod h1:ah1In8AOtksoNK6yk5z1HTJeUkC1Ez4Wk2idgGslMwQ=
+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/go-fitz v1.23.7 h1:HPhzEVzmOINvCKqQgB/DwMzYh4ArIgy3tMwq1eJTcbg=
+github.com/gen2brain/go-fitz v1.23.7/go.mod h1:HU04vc+RisUh/kvEd2pB0LAxmK1oyXdN4ftyshUr9rQ=
+github.com/gen2brain/go-unarr v0.2.0 h1:sYKSjbeNSuZgudd59iGAbMbr113XRFoA7Rt9XWA+QVE=
+github.com/gen2brain/go-unarr v0.2.0/go.mod h1:hoHheVuf0KT8/hfvkEL7GMwj2h7fq0lF72NdyySdr3c=
+github.com/google/uuid v1.3.1 h1:KjJaJ9iWZ3jOFZIf1Lqf4laDRCasjl0BCmnEGxkdLb4=
+github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.15.0 h1:kOELfmgrmJlw4Cdb7g/QGuB3CvDrXbqEIww/pNtNBm8=
+golang.org/x/image v0.15.0/go.mod h1:HUYqC05R2ZcZ3ejNQsIHQDQiwWM4JBqmm6MKANTp4LE=
+golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+gopkg.in/gographics/imagick.v3 v3.5.1 h1:58JqK0UCx5RfvbRggF5FKuK6jHwAtTQopUxK8mzFa40=
+gopkg.in/gographics/imagick.v3 v3.5.1/go.mod h1:+Q9nyA2xRZXrDyTtJ/eko+8V/5E7bWYs08ndkZp8UmA=
+modernc.org/libc v1.24.1 h1:uvJSeCKL/AgzBo2yYIPPTy82v21KgGnizcGYfBHaNuM=
+modernc.org/libc v1.24.1/go.mod h1:FmfO1RLrU3MHJfyi9eYYmZBfi/R+tqZ6+hQ3yQQUkak=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.7.2 h1:Klh90S215mmH8c9gO98QxQFsY+W451E8AnzjoE2ee1E=
+modernc.org/memory v1.7.2/go.mod h1:NO4NVCQy0N7ln+T9ngWqOQfi7ley4vpwvARR+Hjw95E=

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