support FreeBSD

* Instead of relying on `man -`, we call Groff directly.
* Naturally, we must depend on Groff as well.
* man-db is not available on FreeBSD

3 files changed, 26 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 8fe3880..8d51ea3 100644
--- a/Makefile
+++ b/Makefile
@@ -47,7 +47,7 @@ install : openrussian openrussian-sqlite3.db \
 	cp openrussian-completion.bash $(DESTDIR)$(COMPLETIONSDIR)/openrussian
 	mkdir -p $(DESTDIR)$(PREFIX)/man/man1
 	cp openrussian.1 $(DESTDIR)$(PREFIX)/man/man1
-	mandb
+	mandb || true
 
 clean:
 	$(RM) openrussian openrussian-sqlite3.db
diff --git a/README.md b/README.md
index 31b49b5..89fd84d 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,8 @@ Possible future features:
 * Be tolerant to typing mistakes.
 * Accented characters are still broken in nroff tables
   (see https://lists.gnu.org/archive/html/groff/2018-08/msg00000.html).
+  We could and probably should of translate most vowel-accent combinations to single precomposed codepoints,
+  but that might cause problems when copying text from the terminal.
 
 ## Installation
 
@@ -72,6 +74,21 @@ If it returns lots of errors, you should probably stay with the original databas
 Otherwise, the error messages might help in fixing/upgrading the script.
 You are of course welcome to contribute patches. :-)
 
+### FreeBSD
+
+Build-time dependencies:
+
+    pkg install gmake pkgconf groff lua52 lua52-luasql-sqlite3 lua52-luarocks wget sqlite3
+
+Installing [luautf8](https://github.com/starwing/luautf8) using LuaRocks:
+
+    luarocks52 install luautf8
+
+Building is straight forward:
+
+    gmake LUA=lua52 LUAC=luac52
+    gmake install
+
 ### NixOS
 
 `openrussian-cli` is part of the `nixos-unstable` (and soon `nixos-21.05`) channels.
diff --git a/openrussian.lua b/openrussian.lua
index 961efdc..6ee5628 100755
--- a/openrussian.lua
+++ b/openrussian.lua
@@ -600,7 +600,14 @@ end
 
 -- Open stream only now, after no more messages have to be written to
 -- stdout/stderr.
-out_stream = assert(use_stdout and io.stdout or io.popen("man /dev/stdin", "w"))
+if use_stdout then
+	out_stream = io.stdout
+else
+	local size_stream = io.popen("stty size")
+	local columns = size_stream and size_stream:read("*a"):match("%d+ (%d+)") or 80
+	out_stream = io.popen("nroff -Kutf8 -Tutf8 -t -man -rLL="..columns.."n -rLT="..columns.."n | less -r", "w")
+end
+assert(out_stream)
 
 -- NOTE: The headers and footers shouldn't contain critical information
 -- since they might not be printed at all.