log: add const qualifier to commands struct

[openocd.git] / guess-rev.sh

diff --git a/guess-rev.sh b/guess-rev.sh
index bd9a4a753d8841b1d6bfd31dff4c0825b1c3091e..7adbe2817a43f1bac90da1cb716f605fb9d7fe80 100755 (executable)
--- a/guess-rev.sh
+++ b/guess-rev.sh
@@ -1,8 +1,83 @@
-#!/bin/bash
+#!/bin/sh
+#
+# This scripts adds local version information from the version
+# control systems git, mercurial (hg) and subversion (svn).
+#
+# Copied from Linux 2.6.32 scripts/setlocalversion and modified
+# slightly to work better for OpenOCD.
+#
 
-REV=unknown
+usage() {
+       echo "Usage: $0 [srctree]" >&2
+       exit 1
+}
 
-which svnversion > /dev/null 2>&1 && REV=`svnversion -n`
+cd "${1:-.}" || usage
 
-echo -n $REV
+# Check for git and a git repo.
+if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
 
+       # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore it,
+       # because this version is defined in the top level Makefile.
+       if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
+
+               # If we are past a tagged commit (like "v2.6.30-rc5-302-g72357d5"),
+               # we pretty print it.
+               if atag="`git describe 2>/dev/null`"; then
+                       echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
+
+               # If we don't have a tag at all we print -g{commitish}.
+               else
+                       printf '%s%s' -g $head
+               fi
+       fi
+
+       # Is this git on svn?
+       if git config --get svn-remote.svn.url >/dev/null; then
+               printf -- '-svn%s' "`git svn find-rev $head`"
+       fi
+
+       # Update index only on r/w media
+       [ -w . ] && git update-index --refresh --unmerged > /dev/null
+
+       # Check for uncommitted changes
+       if git diff-index --name-only HEAD | grep -v "^scripts/package" \
+           | read dummy; then
+               printf '%s' -dirty
+       fi
+
+       # All done with git
+       exit
+fi
+
+# Check for mercurial and a mercurial repo.
+if hgid=`hg id 2>/dev/null`; then
+       tag=`printf '%s' "$hgid" | cut -d' ' -f2`
+
+       # Do we have an untagged version?
+       if [ -z "$tag" -o "$tag" = tip ]; then
+               id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
+               printf '%s%s' -hg "$id"
+       fi
+
+       # Are there uncommitted changes?
+       # These are represented by + after the changeset id.
+       case "$hgid" in
+               *+|*+\ *) printf '%s' -dirty ;;
+       esac
+
+       # All done with mercurial
+       exit
+fi
+
+# Check for svn and a svn repo.
+if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
+       rev=`echo $rev | awk '{print $NF}'`
+       printf -- '-svn%s' "$rev"
+
+       # All done with svn
+       exit
+fi
+
+# There's no reecognized repository; we must be a snapshot.
+printf -- '-snapshot'