Get nnn compile and run on Haiku (#403)

* Add support for Haiku OS

* Adjust DISTFILES and dist rule in haiku

4 files changed, 266 insertions, 0 deletions

diff --git a/misc/haiku/Makefile b/misc/haiku/Makefile
new file mode 100644
index 0000000..6fd576d
--- /dev/null
+++ b/misc/haiku/Makefile
@@ -0,0 +1,117 @@
+include VERSION.mk
+
+PREFIX ?= /boot/system/non-packaged
+MANPREFIX ?= /boot/system/non-packaged/documentation/man
+STRIP ?= strip
+PKG_CONFIG ?= pkg-config
+INSTALL ?= install
+CP ?= cp
+
+CFLAGS_OPTIMIZATION ?= -O3
+
+O_DEBUG := 0
+O_NORL := 0  # no readline support
+O_NOLOC := 0  # no locale support
+
+# convert targets to flags for backwards compatibility
+ifneq ($(filter debug,$(MAKECMDGOALS)),)
+	O_DEBUG := 1
+endif
+ifneq ($(filter norl,$(MAKECMDGOALS)),)
+	O_NORL := 1
+endif
+ifneq ($(filter noloc,$(MAKECMDGOALS)),)
+	O_NORL := 1
+	O_NOLOC := 1
+endif
+
+ifeq ($(O_DEBUG),1)
+	CPPFLAGS += -DDBGMODE
+	CFLAGS += -g
+	LDLIBS += -lrt
+endif
+
+ifeq ($(O_NORL),1)
+	CPPFLAGS += -DNORL
+else
+	LDLIBS += -lreadline
+endif
+
+ifeq ($(O_NOLOC),1)
+	CPPFLAGS += -DNOLOCALE
+endif
+
+ifeq ($(shell $(PKG_CONFIG) ncursesw && echo 1),1)
+	CFLAGS_CURSES ?= $(shell $(PKG_CONFIG) --cflags ncursesw)
+	LDLIBS_CURSES ?= $(shell $(PKG_CONFIG) --libs   ncursesw)
+else ifeq ($(shell $(PKG_CONFIG) ncurses && echo 1),1)
+	CFLAGS_CURSES ?= $(shell $(PKG_CONFIG) --cflags ncurses)
+	LDLIBS_CURSES ?= $(shell $(PKG_CONFIG) --libs   ncurses)
+else
+	LDLIBS_CURSES ?= -lncurses
+endif
+
+ifeq ($(shell uname -s), Haiku)
+	LDLIBS_HAIKU ?= -lstdc++ -lbe
+	SRC_HAIKU ?= misc/haiku/nm.cpp
+	OBJS_HAIKU ?= misc/haiku/nm.o
+endif
+
+CFLAGS += -Wall -Wextra
+CFLAGS += $(CFLAGS_OPTIMIZATION)
+CFLAGS += $(CFLAGS_CURSES)
+
+LDLIBS += $(LDLIBS_CURSES) $(LDLIBS_HAIKU)
+
+DISTFILES = src nnn.1 Makefile README.md LICENSE VERSION.mk
+SRC = src/nnn.c
+HEADERS = src/nnn.h
+BIN = nnn
+OBJS := nnn.o $(OBJS_HAIKU)
+
+all: $(BIN)
+
+ifeq ($(shell uname -s), Haiku)
+$(OBJS_HAIKU): $(SRC_HAIKU)
+	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+endif
+
+nnn.o: $(SRC) $(HEADERS)
+	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+
+$(BIN): $(OBJS)
+	$(CC) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+
+# targets for backwards compatibility
+debug: $(BIN)
+norl: $(BIN)
+noloc: $(BIN)
+
+install: all
+	$(INSTALL) -m 0755 -d $(DESTDIR)$(PREFIX)/bin
+	$(INSTALL) -m 0755 $(BIN) $(DESTDIR)$(PREFIX)/bin
+	$(INSTALL) -m 0755 -d $(DESTDIR)$(MANPREFIX)/man1
+	$(INSTALL) -m 0644 $(BIN).1 $(DESTDIR)$(MANPREFIX)/man1
+
+uninstall:
+	$(RM) $(DESTDIR)$(PREFIX)/bin/$(BIN)
+	$(RM) $(DESTDIR)$(MANPREFIX)/man1/$(BIN).1
+
+strip: $(BIN)
+	$(STRIP) $^
+
+dist:
+	mkdir -p nnn-$(VERSION)
+	$(CP) -r $(DISTFILES) nnn-$(VERSION)
+	mkdir -p nnn-$(VERSION)/misc
+	$(CP) -r misc/haiku nnn-$(VERSION)/misc
+	tar -cf nnn-$(VERSION).tar nnn-$(VERSION)
+	gzip nnn-$(VERSION).tar
+	$(RM) -r nnn-$(VERSION)
+
+clean:
+	$(RM) -f $(BIN) $(OBJS) nnn-$(VERSION).tar.gz
+
+skip: ;
+
+.PHONY: all debug install uninstall strip dist clean
diff --git a/misc/haiku/haiku_interop.h b/misc/haiku/haiku_interop.h
new file mode 100644
index 0000000..b422412
--- /dev/null
+++ b/misc/haiku/haiku_interop.h
@@ -0,0 +1,14 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct haiku_nm_t *haiku_nm_h;
+haiku_nm_h haiku_init_nm();
+void haiku_close_nm(haiku_nm_h hnd);
+int haiku_watch_dir(haiku_nm_h hnd, const char *path);
+int haiku_stop_watch(haiku_nm_h hnd);
+int haiku_is_update_needed(haiku_nm_h hnd);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/misc/haiku/nm.cpp b/misc/haiku/nm.cpp
new file mode 100644
index 0000000..ede1d37
--- /dev/null
+++ b/misc/haiku/nm.cpp
@@ -0,0 +1,83 @@
+#include <Directory.h>
+#include <Looper.h>
+#include <NodeMonitor.h>
+#include <MessageFilter.h>
+
+#include "haiku_interop.h"
+
+filter_result dir_mon_flt(BMessage *message, BHandler **hnd, BMessageFilter *fltr) {
+	(void) hnd;
+	(void) fltr;
+
+	if (message->what == B_NODE_MONITOR) {
+		int32 val;
+		message->FindInt32("opcode", &val);
+
+		switch (val) {
+			case B_ENTRY_CREATED:
+			case B_ENTRY_MOVED:
+			case B_ENTRY_REMOVED:
+				return B_DISPATCH_MESSAGE;
+		}
+	}
+
+	return B_SKIP_MESSAGE;
+}
+
+class DirectoryListener : public BLooper {
+public:
+	bool recv_reset() {
+		Lock();
+		bool val = _ev_on;
+		_ev_on = false;
+		Unlock();
+
+		return val;
+	}
+private:
+	void MessageReceived(BMessage * message) override {
+		Lock();
+		_ev_on = true;
+		Unlock();
+		BLooper::MessageReceived(message);
+	}
+
+	bool _ev_on = false;
+};
+
+struct haiku_nm_t {
+	haiku_nm_t() {
+		dl = new DirectoryListener();
+		flt = new BMessageFilter(B_PROGRAMMED_DELIVERY, B_LOCAL_SOURCE, dir_mon_flt);
+		dl->AddCommonFilter(flt);
+		dl->Run();
+	}
+
+	DirectoryListener *dl;
+	BMessageFilter *flt;
+	node_ref nr;
+};
+
+haiku_nm_h haiku_init_nm() {
+	return new haiku_nm_t();
+}
+
+void haiku_close_nm(haiku_nm_h hnd) {
+	delete hnd->flt;
+	// This is the way of deleting a BLooper
+	hnd->dl->PostMessage(B_QUIT_REQUESTED);
+	delete hnd;
+}
+int haiku_watch_dir(haiku_nm_h hnd, const char *path) {
+	BDirectory dir(path);
+	dir.GetNodeRef(&(hnd->nr));
+
+	return watch_node(&(hnd->nr), B_WATCH_DIRECTORY, nullptr, hnd->dl);
+}
+int haiku_stop_watch(haiku_nm_h hnd) {
+	return watch_node(&(hnd->nr), B_STOP_WATCHING, nullptr, hnd->dl);
+}
+
+int haiku_is_update_needed(haiku_nm_h hnd) {
+	return hnd->dl->recv_reset();
+}
diff --git a/misc/haiku/nnn-master.recipe b/misc/haiku/nnn-master.recipe
new file mode 100644
index 0000000..7e2e463
--- /dev/null
+++ b/misc/haiku/nnn-master.recipe
@@ -0,0 +1,52 @@
+SUMMARY="The missing terminal file manager for X"
+DESCRIPTION="
+nnn is a full-featured terminal file manager. It's tiny and nearly 0-config with an incredible performance.
+
+nnn is also a du analyzer, an app launcher, a batch renamer and a file picker. The plugin repository has tons of plugins and documentation to extend the capabilities further. You can plug new functionality and play with a custom keybind instantly. There's an independent (neo)vim plugin.
+
+It runs smoothly on the Raspberry Pi, Termux on Android, Linux, macOS, BSD, Cygwin, WSL and works seamlessly with DEs and GUI utilities.
+
+Visit the Wiki for concepts, program usage, how-tos and troubleshooting.
+"
+HOMEPAGE="https://github.com/jarun/nnn"
+COPYRIGHT="2016-2019 Arun Prakash Jana"
+LICENSE="BSD (2-clause)"
+REVISION="1"
+SOURCE_URI="git://github.com/jarun/nnn.git"
+
+ARCHITECTURES="x86 x86_64"
+
+PROVIDES="
+	nnn = $portVersion
+	cmd:nnn = $portVersion
+	"
+REQUIRES="
+        haiku
+	lib:libncurses
+	lib:libreadline
+        "
+
+BUILD_REQUIRES="
+        haiku_devel
+	pkgconfig
+	devel:libncurses
+	devel:libreadline
+        "
+
+BUILD_PREREQUIRES="
+	cmd:make
+	cmd:gcc
+	cmd:g++
+	cmd:ld
+	cmd:install
+"
+
+BUILD()
+{
+	make -f misc/haiku/Makefile
+}
+
+INSTALL()
+{
+	make -f misc/haiku/Makefile PREFIX=$prefix MANPREFIX=$manDir install
+}