reformat source code, add build rule to check formatting

.travis.yml

@@ -3,13 +3,17 @@ sudo: required
 services:
   - docker
 
+env:
+  global:
+    - BUILD_CMD=./build_all_configs.sh
+    - BUILD_DIR=/workdir
+    - DOCKER_IMAGE=multiarch/crossbuild
+
 matrix:
   include:
     - env:
       - TARGET_OS=linux64
-      - DOCKER_IMAGE=multiarch/crossbuild
       - CROSS_TRIPLE=x86_64-linux-gnu
-      - BUILD_DIR=/workdir
     - env:
       - TARGET_OS=linux32
       # multiarch/crossbuild doesn't come with 32-bit compilers, use a different image
@@ -18,25 +22,18 @@ matrix:
       - BUILD_DIR=/work
     - env:
       - TARGET_OS=linux-armhf
-      - DOCKER_IMAGE=multiarch/crossbuild
       - CROSS_TRIPLE=arm-linux-gnueabihf
-      - BUILD_DIR=/workdir
-      - EXTRA_ARGS="-e SKIP_TESTS=1"
+      - EXTRA_ARGS='-e SKIP_TESTS=1'
     - env:
       - TARGET_OS=win32
-      - DOCKER_IMAGE=multiarch/crossbuild
       - CROSS_TRIPLE=i686-w64-mingw32
-      - BUILD_DIR=/workdir
       # multiarch/crossbuild doesn't come with 'zip',
       # so we build a tgz archive in the container, and re-package it later in the script.
       - EXTRA_ARGS='-e ARCHIVE=tar -e SKIP_TESTS=1'
     - env:
       - TARGET_OS=osx
-      - DOCKER_IMAGE=multiarch/crossbuild
       - CROSS_TRIPLE=x86_64-apple-darwin
-      - BUILD_DIR=/workdir
-      - EXTRA_ARGS="-e SKIP_TESTS=1 -e CXX=c++"
-
+      - EXTRA_ARGS='-e SKIP_TESTS=1 -e CXX=c++'
 
 script:
   - export VER=$(git describe)
@@ -49,7 +46,7 @@ script:
     -e CROSS_TRIPLE=${CROSS_TRIPLE}
     ${EXTRA_ARGS}
     ${DOCKER_IMAGE}
-    ./build_all_configs.sh
+    ${BUILD_CMD}
 
   # Diagnostics
   - ls -l

Makefile

@@ -66,6 +66,10 @@ OBJ		:= main.o \
 
 INCLUDES := -Itclap -Iinclude -Ispiffs/src -I.
 
+FILES_TO_FORMAT := $(shell find . -not -path './spiffs/*' \( -name '*.c' -o -name '*.cpp' \))
+
+DIFF_FILES := $(addsuffix .diff,$(FILES_TO_FORMAT))
+
 # clang doesn't seem to handle -D "ARG=\"foo bar\"" correctly, so replace spaces with \x20:
 BUILD_CONFIG_STR := $(shell echo $(CPPFLAGS) | sed 's- -\\\\x20-')
 
@@ -86,8 +90,6 @@ DIST_NAME := mkspiffs-$(VERSION)$(BUILD_CONFIG_NAME)-$(TARGET_OS)
 DIST_DIR := $(DIST_NAME)
 DIST_ARCHIVE := $(DIST_NAME).$(ARCHIVE_EXTENSION)
 
-.PHONY: all clean dist
-
 all: $(TARGET)
 
 dist: $(DIST_ARCHIVE)
@@ -108,7 +110,7 @@ $(DIST_DIR):
 	@mkdir -p $@
 
 clean:
-	@rm -f $(TARGET) $(OBJ)
+	@rm -f $(TARGET) $(OBJ) $(DIFF_FILES)
 
 SPIFFS_TEST_FS_CONFIG := -s 0x100000 -p 512 -b 0x2000
 
@@ -132,3 +134,19 @@ test: $(TARGET)
 	diff spiffs_t spiffs_u
 	rm -f out.{list0,list1,list2,list_u,spiffs_t}
 	rm -R spiffs_u spiffs_t
+
+format-check: $(DIFF_FILES)
+	@rm -f $(DIFF_FILES)
+
+$(DIFF_FILES): %.diff: %
+	@./format.sh < $< >$<.new
+	@diff $<.new $< >$@ || ( \
+		echo "File $^ not formatted correctly. Please use format.sh to re-format it." && \
+		echo "Here's the diff that caused an error:" && \
+		echo "" && \
+		cat $@ && \
+		rm $@ $<.new && \
+		exit 1 )
+	@rm -f $@ $<.new
+
+.PHONY: all clean dist format-check

format.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+# Runs astyle with the full set of formatting options
+astyle \
+	--style=otbs \
+	--indent=spaces=4 \
+	--convert-tabs \
+	--keep-one-line-statements \
+	--pad-header \
+	--pad-oper \
+	"$@"