Kicad diff action (#1691)

* add kicad diff workflow

* download KiCad-Diff and fix path

* add wildcards

* wat me

* not capitalized as in the help menu grrr

* run script instead of all in workflow

* actually it is supposed to be capitalized

* upload results

* check for dir existence

* check RUSEFI_FTP_SERVER

* fix indentation

* we dont actually need xvfb

* make directory

* remove extension from dir name

* use find exec

* export and use bash

* fix quotes

.github/workflows/gen-diffs.yaml

@@ -0,0 +1,37 @@
+name: Generate Kicad Diffs
+
+on:
+  push:
+    paths:
+    - 'hardware/**'
+
+jobs:
+  generate:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: recursive
+        fetch-depth: 0
+
+    - name: Install ncftp, kicad, and tk bindings
+      run: |
+        sudo add-apt-repository ppa:js-reynaud/kicad-5.1
+        sudo apt-get update
+        sudo apt-get install ncftp kicad python3-tk
+
+    - name: Get KiCad-Diff
+      run: git clone https://github.com/Gasman2014/KiCad-Diff.git
+
+    - name: Set FTP variables
+      run: |
+        if [ "${{github.event_name}}" = "push" ] && [ "${{github.ref}}" = "refs/heads/master" ]; then
+          echo "::set-env name=RUSEFI_FTP_SERVER::${{secrets.RUSEFI_FTP_SERVER}}";
+          echo "::set-env name=RUSEFI_DOXYGEN_FTP_USER::${{secrets.RUSEFI_DOXYGEN_FTP_USER}}";
+          echo "::set-env name=RUSEFI_DOXYGEN_FTP_PASS::${{secrets.RUSEFI_DOXYGEN_FTP_PASS}}";
+        fi
+
+    - name: Generate diffs
+      working-directory: ./hardware
+      run: bash generate_diffs.sh

hardware/generate_diffs.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+function gendiffs() {
+  ../KiCad-Diff/kidiff_linux.py -w -s Git -b $(git rev-parse --short HEAD~1) -a $(git rev-parse --short HEAD) -d :0 $1
+  if [ -d $(dirname "$1")/plots ] && [ -n "$RUSEFI_FTP_SERVER" ]; then
+    echo "mkdir diffs/plots_$(basename "$1" .kicad_pcb)" | ncftp -u "$RUSEFI_DOXYGEN_FTP_USER" -p "$RUSEFI_DOXYGEN_FTP_PASS" "$RUSEFI_FTP_SERVER"
+    ncftpput -R -v -u "$RUSEFI_DOXYGEN_FTP_USER" -p "$RUSEFI_DOXYGEN_FTP_PASS" "$RUSEFI_FTP_SERVER" /diffs/plots_$(basename "$1" .kicad_pcb) $(dirname "$1")/plots
+  fi
+}
+export -f gendiffs
+
+find . -name "*.kicad_pcb" -exec bash -c 'gendiffs "$0"' {} \;