1#!/bin/sh
2#
3# Sets the nano version according to the number of commits on this branch, as
4# well as the branch offset.
5#
6# To have git run this script on commit, first make sure you change
7# BRANCH_OFFSET to 60000 or higher, then create a "pre-commit" text file in
8# .git/hooks/ with the following content:
9# #!/bin/sh
10# if [ -x .private/pre-commit.sh ]; then
11#   source .private/pre-commit.sh
12# fi
13#
14# NOTE: These versioning hooks are intended to be used *INTERNALLY* by the
15# libusb development team and are NOT intended to solve versioning for any
16# derivative branch, such as one you would create for private development.
17#
18# Should you wish to reuse these scripts for your own versioning, in your own
19# private branch, we kindly ask you to first set BRANCH_OFFSET to 60000, or
20# higher, as any offset below below 60000 is *RESERVED* for libusb official
21# usage.
22
23################################################################################
24##  YOU *MUST* SET THE FOLLOWING TO 60000 OR HIGHER IF YOU REUSE THIS SCRIPT  ##
25################################################################################
26BRANCH_OFFSET=10000
27################################################################################
28
29if [ -n "$LIBUSB_SKIP_NANO" ]; then
30  exit 0
31fi
32
33if [ "$BASH_VERSION" = '' ]; then
34  TYPE_CMD="type git >/dev/null 2>&1"
35else
36  TYPE_CMD="type -P git &>/dev/null"
37fi
38
39eval $TYPE_CMD || { echo "git command not found. Aborting." >&2; exit 1; }
40
41NANO=`git log --oneline | wc -l`
42NANO=`expr $NANO + $BRANCH_OFFSET`
43# Amended commits need to have the nano corrected. Current versions of git hooks
44# only allow detection of amending post commit, so we require a .amend file,
45# which will be created post commit with a user warning if none exists when an
46# amend is detected.
47if [ -f .amend ]; then
48  NANO=`expr $NANO - 1`
49fi
50echo "setting nano to $NANO"
51echo "#define LIBUSB_NANO $NANO" > libusb/version_nano.h
52git add libusb/version_nano.h
53