ghost-writer

alphabet.txt

A,111111010011111
B,111111010101110
C,111111000110001
D,111111000101110
E,111111010110101
F,111111010010000
G,011101010110010
H,111110010011111
I,100011111110001
J,100111111110000
K,111110010011011
L,111110000100001
M,1111101000001100100011111
N,11111010000010011111
O,111111000111111
P,111111010011100
Q,0
R,111111011011101
S,010011010110010
T,100001111110000
U,111100000111110
V,111100000111110
W,1111100010011000001011111
X,100010111010001
Y,111000011111100
Z,0
0,111111000111111
1,1000011111
2,101111010111101
3,101011010111111
4,111000010011111
5,111011010110111
6,111111010110111
7,100001000011111
8,111111010111111
9,111001010011111
!,0000011101
?,010001010101100

ghost-writer.sh

#!/usr/bin/env bash

# Number of commits to make for an OFF square
OFF_COMMITS=1

# Number of commits for an ON square - increase this number if
# you have many commits in the time period so the text stands out from
# your other commits
ON_COMMITS=10

# Date to start writing squares - must be a Sunday
d="2001-01-07"

gitEmail=yours@you.com
gitUsername=your_username

if [ $# -eq 0 ]; then
    echo "No message supplied"
    exit 1
fi

if ((${#1} > 15)); then
    echo "The message is longer than 15 characters"
    exit 1
fi

if [[ ! $1 =~ ^[A-Z0-9!?[:space:]]+$ ]]; then
    echo "The message contains invalid characters"
    exit 1
fi

declare -A font_map
while IFS=',' read -r key value; do
    font_map["$key"]="$value"
done <alphabet.txt

write_date() {
    commitDate=$1
    for ((commit = 0; commit < $ON_COMMITS; commit++)); do
        echo "$commitDate-$commit" >commit.txt
        git add .
        GIT_COMMITTER_DATE="$commitDate 03:0$commit" git commit --date="$commitDate 03:0$commit" -m "commit $commit on $commitDate" &>/dev/null
    done
}

write_empty_date() {
    commitDate=$1
    for ((commit = 0; commit < $OFF_COMMITS; commit++)); do
        echo "$commitDate-$commit" >commit.txt
        git add .
        GIT_COMMITTER_DATE="$commitDate 03:0$commit" git commit --date="$commitDate 03:0$commit" -m "commit $commit on $commitDate" &>/dev/null
    done
}

add_space() {
    spaceDate=$1
    for ((blankRow = 0; blankRow < 15; blankRow++)); do
        write_empty_date $spaceDate
        spaceDate=$(date -j -v+1d -f "%Y-%m-%d" "$spaceDate" "+%Y-%m-%d")
    done
}

reinit_git() {
    rm -rf .git
    git init &>/dev/null
    git config user.name $gitUsername
    git config user.email $gitEmail
}

process_char() {
    map=$1
    targetDate=$2
    length=$3

    for ((c = 0; c < length; c++)); do
        write_empty_date $targetDate

        # if we are at the top of a column, add 1 day space
        if [ $((c % 5)) -eq 0 ]; then
            targetDate=$(date -j -v+1d -f "%Y-%m-%d" "$targetDate" "+%Y-%m-%d")
        fi

        if [ ${map:$c:1} -eq 1 ]; then
            write_date $targetDate
        else
            write_empty_date $targetDate
        fi

        # add one day to date
        targetDate=$(date -j -v+1d -f "%Y-%m-%d" "$targetDate" "+%Y-%m-%d")

        # bottom row + loop around
        if [ $((c % 5)) -eq 4 ]; then
            write_empty_date $targetDate
            targetDate=$(date -j -v+1d -f "%Y-%m-%d" "$targetDate" "+%Y-%m-%d")
        fi

        # if last column, add 1 column of space
        if [ $c -eq $((length - 1)) ]; then
            for ((blankRow = 0; blankRow < 7; blankRow++)); do
                write_empty_date $targetDate
                targetDate=$(date -j -v+1d -f "%Y-%m-%d" "$targetDate" "+%Y-%m-%d")
            done
        fi
    done
}

text=$1

#replace spaces with underscores
text=${text// /_}

#Create a repo
mkdir $text &>/dev/null
cd $text
reinit_git

echo "text is $text"
add_space $d
d=$(date -j -v+7d -f "%Y-%m-%d" "$d" "+%Y-%m-%d")

for ((charIndex = 0; charIndex < ${#text}; charIndex++)); do

    char=${text:$charIndex:1}
    if [ $char == "_" ]; then
        add_space $d
        d=$(date -j -v+7d -f "%Y-%m-%d" "$d" "+%Y-%m-%d")
        continue
    fi

    echo "processing $char"
    map=${font_map["$char"]}
    n=${#map}
    cols=$((n / 5))

    process_char $map $d $n

    git remote add origin git@github.com:gitffiti/studio.git
    git push -u origin main --force

    reinit_git

    # add 7 days for each col
    for ((col = 0; col <= cols; col++)); do
        d=$(date -j -v+7d -f "%Y-%m-%d" "$d" "+%Y-%m-%d")
    done
done

bash script and alphabet for writing text to github contribution graphs

i was too lazy to do Q and Z

i also only used this on a fresh github account