1 files changed, 90 insertions, 0 deletions
diff --git a/build_tools/style.fish b/build_tools/style.fish
new file mode 100755
index 00000000..76cf920d
--- /dev/null
+++ b/build_tools/style.fish
@@ -0,0 +1,90 @@
+#!/usr/bin/env fish
+#
+# This is meant to be run by "make style" or "make style-all". It is not meant to
+# be run directly from a shell prompt although it can be.
+#
+# This runs C++ files and fish scripts (*.fish) through their respective code
+# formatting programs.
+#
+set c_files
+set f_files
+set all no
+
+if test "$argv[1]" = "--all"
+    set all yes
+    set -e argv[1]
+end
+
+if set -q argv[1]
+    echo "Unexpected arguments: '$argv'"
+    exit 1
+end
+
+if test $all = yes
+    set c_files src/*.h src/*.cpp
+    set f_files ***.fish
+else
+    # We haven't been asked to reformat all the source. If there are uncommitted
+    # changes reformat those, else reformat the files in the most recent commit.
+    set pending (git status --porcelain --short --untracked-files=all | sed -e 's/^ *//')
+    if count $pending > /dev/null
+        # There are pending changes so lint those files.
+        for arg in $pending
+            set files $files (string split -m 1 ' ' $arg)[2]
+        end
+    else
+        # No pending changes so lint the files in the most recent commit.
+        set files (git show --name-only --pretty=oneline head | tail --lines=+2)
+    end
+
+    # Extract just the C/C++ files.
+    set c_files (string match -r '^.*\.(?:c|cpp|h)$' -- $files)
+    # Extract just the fish files.
+    set f_files (string match -r '^.*\.fish$' -- $files)
+end
+
+# Run the C++ reformatter if we have any C++ files.
+if set -q c_files[1]
+    if type -q clang-format
+        echo
+        echo ========================================
+        echo Running clang-format
+        echo ========================================
+        for file in $c_files
+            clang-format $file > $file.new
+            if cmp --quiet $file $file.new
+                echo $file was correctly formatted
+                rm $file.new
+            else
+                echo $file was NOT correctly formatted
+                mv $file.new $file
+            end
+        end
+    else
+        echo
+        echo 'WARNING: Cannot find clang-format command'
+        echo
+    end
+end
+
+# Run the fish reformatter if we have any fish files.
+if set -q f_files[1]
+    if not type -q fish_indent
+        make fish_indent
+        set PATH . $PATH
+    end
+    echo
+    echo ========================================
+    echo Running fish_indent
+    echo ========================================
+    for file in $f_files
+        fish_indent < $file > $file.new
+        if cmp --quiet $file $file.new
+            echo $file was correctly formatted
+            rm $file.new
+        else
+            echo $file was NOT correctly formatted
+            mv $file.new $file
+        end
+    end
+end