Git: show number of lines and commits per contributor, count only files: php|js|css|sass|scss

git-show-contributors-details.sh

#!/bin/bash

# provide directory of the repo
cd $1;

echo "------------- COMMITS ------------";
echo " ";

git log --pretty=format:"%an" | sort | uniq -c | sort -nr | awk '
BEGIN { total_commits=0 }
{
  author = ""
  for (i=2; i<=NF; i++) author = author " " $i
  author = substr(author, 2)
  commits[author] = $1
  total_commits += $1
  ordered_authors[NR] = author
}
END {
  for (i=1; i<=length(ordered_authors); i++) {
    author = ordered_authors[i]
    percent = (commits[author] / total_commits) * 100
    printf "%-6d %-20s %.1f%%\n", commits[author], author, percent
  }
}
'

echo " ";
echo "------------- LINES OF CODE CHANGED ------------";
echo " ";

git log --numstat --pretty=format:"%an" | awk '
BEGIN { total_lines = 0 }
{
  if ($0 ~ /^[a-zA-Z]/) {
    author = ""
    for (i=1; i<=NF; i++) author = author " " $i
    author = substr(author, 2)
  } else if (NF == 3 && $3 ~ /\.(php|js|css|sass|scss)$/) {
    lines_changed[author] += $1 + $2
    total_lines += $1 + $2
  }
}
END {
  for (author in lines_changed) {
    percent = (lines_changed[author] / total_lines) * 100
    printf "%-6d %-20s %.1f%%\n", lines_changed[author], author, percent
  }
}
' | sort -nr

echo " ";
echo "------------- LINES OF CODE ADDED ------------";
echo " ";

git log --numstat --pretty=format:"%an" | awk '
BEGIN { total_lines_added = 0 }
{
  if ($0 ~ /^[a-zA-Z]/) {
    author = ""
    for (i=1; i<=NF; i++) author = author " " $i
    author = substr(author, 2)
  } else if (NF == 3 && $3 ~ /\.(php|js|css|sass|scss)$/) {
    lines_added[author] += $1
    total_lines_added += $1
  }
}
END {
  for (author in lines_added) {
    percent = (lines_added[author] / total_lines_added) * 100
    printf "%-6d %-20s %.1f%%\n", lines_added[author], author, percent
  }
}
' | sort -nr


echo " ";
echo "------------- CONTRIBUTORS ACTIVITY PERIOD (time worked on the project) ------------";
echo " ";

git log --pretty=format:'%an %ad' --date=short | sort -k1,1 -k2,2 | awk '
{
    name = $1;
    for (i = 2; i <= NF-1; i++) {
        name = name " " $i;
    }
    date = $NF;
    if (!(name in first)) {
        first[name] = date;
    }
    last[name] = date;
}
END {
    for (author in first) {
        print author "\t" first[author] "\t" last[author];
    }
}' | sort | awk -F'\t' '
{
    print "Author:", $1;
    print "First Commit:", $1, $2;
    print "Last Commit:", $1, $3;
    print "";
}'


cd -;