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the_information_nexus/smma/imagemagick.md
2024-05-31 02:33:07 +00:00

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# Image Converter
This project provides a script to convert WEBP and HEIC images to PNG and JPG formats using ImageMagick.
## Setup Instructions
### Prerequisites
#### Install Homebrew
To install Homebrew, run the following command:
```bash
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
```
After installation, add Homebrew to your PATH:
- For **zsh** (default for macOS Catalina and later):
```bash
echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zshrc
source ~/.zshrc
```
- For **bash**:
```bash
echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.bash_profile
source ~/.bash_profile
```
#### Install ImageMagick
With Homebrew installed, run the following command to install ImageMagick:
```bash
brew install imagemagick
```
Verify the installation by checking the version:
```bash
magick --version
```
### Project Setup
1. **Clone the repository**:
```bash
git clone https://github.com/yourusername/image-converter.git
cd image-converter
```
2. **Make the script executable**:
```bash
chmod +x convert_images.sh
```
3. **Add an alias to your shell configuration file**:
```bash
echo "alias convert='~/path_to_your_script_directory/convert_images.sh'" >> ~/.zshrc
source ~/.zshrc
```
Replace `~/path_to_your_script_directory` with the actual path where you cloned the repository.
### Usage
To convert a WEBP or HEIC file to PNG and JPG, use the following command:
```bash
convert filename.webp
```
or
```bash
convert filename.heic
```
The converted files will be saved in `~/Pictures/Converted`.
### Maintenance Commands
Keep Homebrew and its packages up-to-date with the following commands:
- **Update Homebrew**:
```bash
brew update
```
- **Upgrade installed packages**:
```bash
brew upgrade
```
- **Cleanup old versions**:
```bash
brew cleanup
```
## Complete Project Code
### Project Directory Structure
```
image-converter/
├── convert_images.sh
├── README.md
└── .gitignore
```
### convert_images.sh
```bash
#!/bin/bash
# Check if the magick command is available
if ! command -v magick &> /dev/null; then
echo "ImageMagick is not installed or not in your PATH."
exit 1
fi
# Get the input file from the command line argument
input_file=$1
# Check if input file is provided
if [ -z "$input_file" ]; then
echo "Error: No input file specified. Usage: convert file1.webp or convert file1.heic"
exit 1
fi
# Extract the base name and extension of the input file
base_name=$(basename "$input_file" | cut -d. -f1)
extension=$(basename "$input_file" | cut -d. -f2)
# Define the output directory
output_dir="$HOME/Pictures/Converted"
# Check if the output directory exists, create if it does not
if [ ! -d "$output_dir" ]; then
mkdir -p "$output_dir"
fi
# Function to convert images
convert_images() {
local input_file=$1
local base_name=$2
local output_dir=$3
# Convert to PNG
magick "$input_file" "$output_dir/${base_name}.png"
echo "Converted $input_file to $output_dir/${base_name}.png"
# Convert to JPG
magick "$input_file" "$output_dir/${base_name}.jpg"
echo "Converted $input_file to $output_dir/${base_name}.jpg"
}
# Check the file extension and convert if it is .webp or .heic
if [ "$extension" = "webp" ] || [ "$extension" = "heic" ]; then
convert_images "$input_file" "$base_name" "$output_dir"
else
echo "Error: The file must be either .webp or .heic."
exit 1
fi
```
### .gitignore
```gitignore
# Ignore log files and temp files
*.log
*.tmp
```
## Final Steps
1. **Initialize Git Repository**:
```bash
cd image-converter
git init
git add .
git commit -m "Initial commit with image conversion script"
```
2. **Push to GitHub**:
- Create a new repository on GitHub.
- Add the remote repository and push your code:
```bash
git remote add origin https://github.com/yourusername/image-converter.git
git branch -M main
git push -u origin main
```