Add utils/git directory

Group git-related utilities under one directory.
The utils/git/run script runs git as the '_sourcezap'
user, and it is how we talk to git.

libexec/sourcezap/commands/sourcezap-checkout

@@ -12,7 +12,7 @@ branch=$2
 # functions
 git()
 {
-    "${libexec}"/utils/git "${@}"
+    "${libexec}"/utils/git/run "${@}"
 }
 
 printok()
@@ -38,7 +38,7 @@ if ! "${libexec}"/utils/issourcezap-member > /dev/null 2>&1; then
 fi
 
 if [ ! -e "${gitdir}/.git" ]; then
-    printerr "try 'portzap clone' instead"
+    printerr "try 'sourcezap clone' instead"
     exit 1
 fi
 

libexec/sourcezap/commands/sourcezap-clone

@@ -13,7 +13,7 @@ branch=$3
 # functions
 git()
 {
-    "${libexec}"/utils/git "${@}"
+    "${libexec}"/utils/git/run "${@}"
 }
 
 printok()

libexec/sourcezap/commands/sourcezap-install

@@ -15,8 +15,8 @@ revfile=$3
 perform_update()
 {
     rev=$(cat "${revfile}")
-    add=$("${libexec}"/utils/git-changed-files "${gitdir}" "${rev}")
-    del=$("${libexec}"/utils/git-removed-files "${gitdir}" "${rev}")
+    add=$("${libexec}"/utils/git/get-changed-files "${gitdir}" "${rev}")
+    del=$("${libexec}"/utils/git/get-removed-files "${gitdir}" "${rev}")
     for file in ${del}; do
         target="${installdir}/${file}"
         parent=$(dirname "${target}")
@@ -63,6 +63,11 @@ run_install()
     install -o root -g _sourcezap -m "${mode}" -v "$@"
 }
 
+git()
+{
+    "${libexec}"/utils/git/run "${@}"
+}
+
 printok()
 {
     "${libexec}"/utils/printok "${1}"
@@ -91,5 +96,5 @@ if [ -e "${revfile}" ]; then
 else
     perform_install
 fi
-"${libexec}"/utils/git-rev "${gitdir}" > "${revfile}"
+"${libexec}"/utils/git/run rev-parse HEAD > "${revfile}"
 printok "install complete"

libexec/sourcezap/commands/sourcezap-pull

@@ -11,7 +11,7 @@ gitdir=$1
 # functions
 git()
 {
-    "${libexec}"/utils/git "${@}"
+    "${libexec}"/utils/git/run "${@}"
 }
 
 printok()

libexec/sourcezap/utils/git-rev

@@ -1,20 +0,0 @@
-#!/bin/sh
-set -e
-
-##
-# variables
-localbase=${LOCALBASE:-$(realpath "$(dirname "$0")"/../../..)}
-libexec="${localbase}"/libexec/sourcezap
-gitdir=$1
-
-##
-# functions
-git()
-{
-    "${libexec}"/utils/git "${1}"
-}
-
-##
-# main
-cd "${gitdir}"
-git rev-parse HEAD

libexec/sourcezap/utils/git/get-changed-files

@@ -10,13 +10,13 @@ commit=$2
 
 ##
 # functions
-diff()
+git()
 {
-    "${libexec}"/utils/gitdiff ${@}
+    "${libexec}"/utils/git/run "${@}"
 }
 
 ##
 # main
 cd "${gitdir}"
-diff "--name-only" "--diff-filter=A" "${commit}" "HEAD"
-diff "--name-only" "--diff-filter=M" "${commit}" "HEAD"
+git diff -l0 --name-only --diff-filter=A "${commit}" "HEAD"
+git diff -l0 --name-only --diff-filter=M "${commit}" "HEAD"

libexec/sourcezap/utils/git/get-removed-files

@@ -10,12 +10,12 @@ commit=$2
 
 ##
 # functions
-diff()
+git()
 {
-    "${libexec}"/utils/gitdiff ${@}
+    "${libexec}"/utils/git/run "${@}"
 }
 
 ##
 # main
 cd "${gitdir}"
-diff "--name-only" "--diff-filter=D" "${commit}" "HEAD"
+git diff -l0 --name-only --diff-filter=D "${commit}" "HEAD"

libexec/sourcezap/utils/gitdiff

@@ -1,11 +0,0 @@
-#!/bin/sh
-set -e
-
-##
-# variables
-localbase=${LOCALBASE:-$(realpath "$(dirname "$0")"/../../..)}
-libexec="${localbase}"/libexec/sourcezap
-
-##
-# main
-"${libexec}"/utils/git diff -l0 ${@}