initproj

#!/bin/bash
#   initproj is free software: you can redistribute it and/or
#   modify it under the terms of the GNU General Public License
#   as published by the Free Software Foundation, either version
#   3 of the License, or (at your option) any later version.
#
#   initproj is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty
#   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#   See the GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public
#   License along with initproj. If not, see
#   <https://www.gnu.org/licenses/>.

! getopt --test > /dev/null 
if [[ ${PIPESTATUS[0]} -ne 4 ]]; then
    echo 'I’m sorry, `getopt --test` failed in this environment.'
    exit 1
fi

LONGOPTS=verbose,help
OPTIONS=vh

! PARSED=$(getopt --options=$OPTIONS --longoptions=?,$LONGOPTS --name "$0" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
    exit 2
fi

eval set -- "$PARSED"

v=n
while true; do
    case "$1" in
        -v|--verbose)
            v=y
            shift
            ;;
        -h|--help)
            echo "usage: $0 <project name> [arguments]"
            echo ""
            echo "arguments:"
            echo -e "  -v, --verbose\t\tverbose output"
            echo -e "  -h, --help\t\t\tshow this help message"
            exit 0
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "invalid option: -$1"
            exit 3
            ;;
    esac
done

# vlog function for verbose logging
vlog() {
    if [[ $v == y ]]; then
        echo "V: $@"
    fi
}

# handle non-option arguments
if [[ $# -ne 1 ]]; then
    echo "$0: A project name is required. If the project name contains spaces, surround it with quotes."
    exit 4
fi

proj=$1

vlog Changing cwd to ~
cd ~
vlog Creating $proj
mkdir $proj
vlog Changing cwd to $proj
cd $proj
vlog Downloading GPLv3
wget https://www.gnu.org/licenses/gpl-3.0.txt -O LICENSE -q
vlog Creating README.md and .gitignore
touch README.md .gitignore
IFS=
read -p "Enter a short description: " desc
vlog Writing description to README.md
printf "# "$proj"\n"$desc"\n" > README.md
vlog Creating src
mkdir src
read -p "Enter a main file extension (${proj,,}.?): " ext
vlog Creating src/${proj,,}.$ext and src/Makefile
touch src/${proj,,}.$ext src/Makefile
case "$ext" in
    c)
        echo "Writing hello world program to src/${proj,,}.$ext"
        cat > src/${proj,,}.$ext <<EOF
#include <stdio.h>

int main(void) {
    printf("Hello, World!\n");
    return 0;
}
EOF
        cat > src/Makefile <<EOF
CC=gcc
SOURCES=*.$ext
OUTPUT=${proj,,}
CFLAGS=-Wall -Wextra -Werror

build: \$(OBJECTS)
	\$(CC) -o \$(OUTPUT) \$(SOURCES) \$(CFLAGS)

install:
	cp \$(OUTPUT) /usr/local/bin/\$(OUTPUT)

clean:
	rm -f \$(OBJECTS) \$(OUTPUT)
EOF
        echo "src/${proj,,}" >> .gitignore
        ;;
    cpp)
        echo "Writing hello world program to src/${proj,,}.$ext"
        cat > src/${proj,,}.$ext <<EOF
#include <iostream>

int main(void) {
    std::cout << "Hello, World!" << std::endl;
    return 0;
}
EOF
        cat > src/Makefile <<EOF
CC=g++
SOURCES=*.$ext
OUTPUT=${proj,,}
CFLAGS=-Wall -Wextra -Werror

build: \$(OBJECTS)
	\$(CC) -o \$(OUTPUT) \$(SOURCES) \$(CFLAGS)

install:
	cp \$(OUTPUT) /usr/local/bin/\$(OUTPUT)

clean:
	rm -f \$(OBJECTS) \$(OUTPUT)
EOF
        echo "src/${proj,,}" >> .gitignore
        ;;
    java)
        echo "Writing hello world program to src/${proj,,}.$ext"
        cat > src/${proj,,}.$ext <<EOF
import java.io.PrintStream;

public class ${proj,,} {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}
EOF
        ;;
    python)
        echo "Writing hello world program to src/${proj,,}.$ext"
        cat > src/${proj,,}.$ext <<EOF
print("Hello, World!")
EOF
        ;;
    rb)
        echo "Writing hello world program to src/${proj,,}.$ext"
        cat > src/${proj,,}.$ext <<EOF 
puts "Hello, World!"
EOF
        ;;
    *)
        echo "Couldn't recognize language $ext, not writing a hello world program."
        ;;
esac
git init >/dev/null 2>&1
git add * .gitignore >/dev/null 2>&1
git commit -m "Initial commit by initproj" >/dev/null 2>&1
echo Initialized a project named $proj for you! Run \`cd $proj\` to start working on it.