1 files changed, 106 insertions, 0 deletions
diff --git a/scripts/history.sh b/scripts/history.sh
new file mode 100755
index 0000000..1594714
--- /dev/null
+++ b/scripts/history.sh
@@ -0,0 +1,106 @@
+#!/usr/bin/bash
+function main () {
+  local file="${1}"
+  local template="${2}"
+
+  tmp_file=$(mktemp)
+  generate_json ${file} > ${tmp_file}
+  haskell-mustache ${template} ${tmp_file}
+  rm ${tmp_file}
+}
+
+function gitlog () {
+  local file="${1}"
+  git --no-pager log \
+      --follow \
+      --stat=10000 \
+      --pretty=format:'%s%n%h%n%H%n%cs%n' \
+      "${file}"
+}
+
+function parse_filename () {
+  local line="${1}"
+  local shrink='s/ *\(.*\) \+|.*/\1/'
+  local unfold='s/\(.*\){\(.*\) => \(.*\)}/\1\3/'
+
+  echo ${line} | sed -e "${shrink}" | sed -e "${unfold}"
+}
+
+function generate_json () {
+  local input="${1}"
+  local logs="$(gitlog ${input})"
+
+  if [ ! $? -eq 0 ]; then
+      exit 1
+  fi
+
+  let "idx=0"
+  let "last_entry=$(echo "${logs}" | wc -l) / 8"
+
+  local subject=""
+  local abbr_hash=""
+  local hash=""
+  local date=""
+  local file=""
+  local created="true"
+  local modified="false"
+
+  echo -n "{"
+  echo -n "\"file\": \"${input}\""
+  echo -n ",\"history\": ["
+
+  while read -r subject; do
+    read -r abbr_hash
+    read -r hash
+    read -r date
+    read -r # empty line
+    read -r file
+    read -r # short log
+    read -r # empty line
+
+    if [ ${idx} -ne 0 ]; then
+      echo -n ","
+    fi
+
+    if [ ${idx} -eq ${last_entry} ]; then
+      created="true"
+      modified="false"
+    else
+      created="false"
+      modified="true"
+    fi
+
+    output_json_entry "${subject}" \
+                      "${abbr_hash}" \
+                      "${hash}" \
+                      "${date}" \
+                      "$(parse_filename "${file}")" \
+                      "${created}" \
+                      "${modified}"
+
+    let idx++
+  done < <(echo "${logs}")
+
+  echo -n "]}"
+}
+
+function output_json_entry () {
+  local subject="${1}"
+  local abbr_hash="${2}"
+  local hash="${3}"
+  local date="${4}"
+  local file="${5}"
+  local created="${6}"
+  local last_entry="${7}"
+
+  echo -n "{\"subject\": \"${subject}\""
+  echo -n ",\"created\":${created}"
+  echo -n ",\"modified\":${modified}"
+  echo -n ",\"abbr_hash\":\"${abbr_hash}\""
+  echo -n ",\"hash\":\"${hash}\""
+  echo -n ",\"date\":\"${date}\""
+  echo -n ",\"filename\":\"${file}\""
+  echo -n "}"
+}
+
+main "$(cat)" "${1}"