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Support for custom version commands

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This patch adds support for customising the way in which rebar generates
version numbers for app.src files using the `{vsn,Spec}` approach.
Whilst the existing `{vsn,ScmName::atom()}` syntax will continue to
work, users can also pass `{vsn,{cmd,Cmd::string()}}` in which
case the provided *command* will be used. For example:

```erlang
{application, doodah,
 [
  {vsn, {cmd, "git rev-parse --short HEAD"}}]}.
```
This commit is contained in:
Tim Watson 2011-10-06 07:55:56 +01:00 committed by Tuncer Ayaz
parent 5a0aa04b20
commit 6dfcd8b9f2
1 changed files with 3 additions and 0 deletions
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3
src/rebar_app_utils.erl
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@ -139,6 +139,8 @@ vcs_vsn(Vcs, Dir) ->
{unknown, VsnString} ->
?DEBUG("vcs_vsn: Unknown VCS atom in vsn field: ~p\n", [Vcs]),
VsnString;
{cmd, CmdString} ->
vcs_vsn_invoke(CmdString, Dir);
Cmd ->
%% If there is a valid VCS directory in the application directory,
%% use that version info
@ -173,6 +175,7 @@ vcs_vsn_cmd(git) ->
vcs_vsn_cmd(hg) -> "hg identify -i";
vcs_vsn_cmd(bzr) -> "bzr revno";
vcs_vsn_cmd(svn) -> "svnversion";
vcs_vsn_cmd({cmd, _Cmd}=Custom) -> Custom;
vcs_vsn_cmd(Version) -> {unknown, Version}.
vcs_vsn_invoke(Cmd, Dir) ->