neovim/scripts/update_version_stamp.lua
Daniel Hahler 6768c43e21 update_version_stamp: redirect stderr on first try, --first-parent #11186
Avoid noise during builds:

> fatal: No annotated tags can describe '417449f468c4ba186954f6295b3338fb55ee7b4a'.
> However, there were unannotated tags: try --tags.

This might be useful in general, but is expected to not happen - and
falling back is OK then.  The fallback command would still display
errors then.

It also uses `--first-parent`, which is important for when a release
branch gets merged back.
2019-10-10 01:38:15 -07:00

51 lines
1.5 KiB
Lua
Executable File

#!/usr/bin/env lua
--
-- Script to update the Git version stamp during build.
-- This is called via the custom update_version_stamp target in
-- src/nvim/CMakeLists.txt.
--
-- arg[1]: file in which to update the version string
-- arg[2]: prefix to use always ("vX.Y.Z")
local function die(msg)
io.stderr:write(string.format('%s: %s\n', arg[0], msg))
-- No error, fall back to using generated "-dev" version.
os.exit(0)
end
if #arg ~= 2 then
die(string.format("Expected two args, got %d", #arg))
end
local versiondeffile = arg[1]
local prefix = arg[2]
local described = io.popen('git describe --first-parent --dirty 2>/dev/null'):read('*l')
if not described then
described = io.popen('git describe --first-parent --tags --always --dirty'):read('*l')
end
if not described then
io.open(versiondeffile, 'w'):write('\n')
die('git-describe failed, using empty include file.')
end
-- `git describe` annotates the most recent tagged release; for pre-release
-- builds we must replace that with the unreleased version.
local with_prefix = described:gsub("^v%d+%.%d+%.%d+", prefix)
if described == with_prefix then
-- Prepend the prefix always, e.g. with "nightly-12208-g4041b62b9".
with_prefix = prefix .. "-" .. described
end
-- Read existing include file.
local current = io.open(versiondeffile, 'r')
if current then
current = current:read('*l')
end
-- Write new include file, if different.
local new = '#define NVIM_VERSION_MEDIUM "'..with_prefix..'"'
if current ~= new then
io.open(versiondeffile, 'w'):write(new .. '\n')
end