From c61c1ca3917f2377553df26a5290e5dfb8780631 Mon Sep 17 00:00:00 2001
From: Mike McLean <mikem@redhat.com>
Date: Jun 12 2014 20:36:41 +0000
Subject: handle detached branch case handle alternate directory name case cmdline args to override branch and source url


---

diff --git a/get_sources.sh b/get_sources.sh
index ab816f2..6451bd0 100755
--- a/get_sources.sh
+++ b/get_sources.sh
@@ -11,31 +11,91 @@
 
 surl="https://git.centos.org/sources/"
 
-pn=$(basename `pwd`)
-f=.${pn}.metadata
-
 # for setting any overrides, such as surl or f
 if [ -f /etc/centos-git-common ]; then
   . /etc/centos-git-common
 fi
 
-if [ ! -e ${f} ] ||  [ ! -d .git ] || [ ! -d SPECS ]; then
+#parse command line args
+BRANCH=''
+while (($# > 0))
+do
+  case $1 in
+    --branch)
+        #specify branch instead of asking git
+        BRANCH=$2
+        shift 2
+        ;;
+    --surl)
+        #override sources url
+        surl=$2
+        shift 2
+        ;;
+  esac
+done
+
+# check metadata file and extract package name
+found=0
+shopt -s nullglob
+for meta in .*.metadata
+do
+  pn=${meta%.metadata}
+  pn=${pn#.}
+  if [ -e "SPECS/$pn.spec" ]
+  then
+      found=1
+      break
+  fi
+done
+if (( $found != 1 ))
+then
+    echo 'Missing metadata or spec. Please run from inside a sources git repo'
+    exit 1
+fi
+
+if [ ! -d .git ] || [ ! -d SPECS ]; then
   echo 'You need to run this from inside a sources git repo'
   exit 1
 fi
 mkdir -p SOURCES
-br=$(cat .git/HEAD |awk -F'/' '{print $3}' )
-while read a ; do
-  fsha=$( echo ${a}  | cut -f1 -d\ )
-  fname=$( echo ${a} | cut -f2 -d\ )
-  if [ ${fsha} = "da39a3ee5e6b4b0d3255bfef95601890afd80709" ]; then
+
+# sort out our branch
+if [ -n "$BRANCH" ]
+then
+  branches=("$BRANCH")
+else
+  # generate a list of all branches containing current HEAD
+  branches=()
+  while IFS='' read -r line
+  do
+    # input from: git branch --contains HEAD
+    branch="${line:2}"
+    if [[ "$branch" =~ "detached from" ]]
+    then
+      # ignore detached heads
+      continue
+    fi
+    if [ ".${line:0:1}" = ".*" ]
+    then
+      # current branch, put it first
+      branches=("$branch" "${branches[@]}")
+    else
+      branches=("${branches[@]}" "$branch")
+    fi
+  done <<< "$(git branch --contains HEAD)"
+fi
+while read -r fsha fname ; do
+  if [ ".${fsha}" = ".da39a3ee5e6b4b0d3255bfef95601890afd80709" ]; then
     # zero byte file
     touch ${fname}
   else
-    if [ ! -e ${fname} ]; then
-      curl ${surl}/${pn}/${br}/${fsha} -o ${fname}
+    if [ ! -e "${fname}" ]; then
+      for br in "${branches[@]}"
+      do
+        curl -f "${surl}/${pn}/${br}/${fsha}" -o "${fname}" && break
+      done
     else
       echo "${fname} exists. skipping"
     fi
   fi
-done < ${f}
+done < "${meta}"