From 35633f3dc606541bb17788d492460feae4b2f946 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lucio=20Andr=C3=A9s=20Illanes=20Albornoz=20=28arab=2C=20vx?=
 =?UTF-8?q?p=29?= <l.illanes@gmx.de>
Date: Tue, 15 Nov 2016 21:04:53 +0100
Subject: build.sh: adds -N (offline mode) flag.

---
 build.sh        |  1 +
 etc/build.usage |  3 ++-
 subr/pkg.subr   | 23 +++++++++++++----------
 3 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/build.sh b/build.sh
index 2d616f54..f0a00483 100755
--- a/build.sh
+++ b/build.sh
@@ -15,6 +15,7 @@ while [ ${#} -gt 0 ]; do
 case ${1} in
 -c)	export ARG_CLEAN=1; ;;
 -n)	export ARG_DRYRUN=1 ARG_VERBOSE=1; ;;
+-N)	export ARG_OFFLINE=1; ;;
 -t*)	export ARG_TARBALL=1; [ "${1#-t.}" != "${1}" ] && TARBALL_SUFFIX=${1#-t.}; ;;
 -v)	export ARG_VERBOSE=1; ;;
 -x)	export ARG_XTRACE=1; set -o xtrace; ;;
diff --git a/etc/build.usage b/etc/build.usage
index c513c82c..ecfd16ba 100644
--- a/etc/build.usage
+++ b/etc/build.usage
@@ -1,5 +1,5 @@
 usage: ./build.sh [-x] [-a nt32|nt64] [-b debug|release] [-c] [-h] [-n]
-                  [-r package[,...][:step]] [-t[.gz|.bz2|.xz] [-v]
+                  [-N] [-r package[,...][:step]] [-t[.gz|.bz2|.xz] [-v]
                   [<target>[ ...]]
         -x                      Set the xtrace sh(1)ell option for debugging purposes.
         -a nt32|nt64            Selects 32-bit or 64-bit architecture; defaults to nt64.
@@ -8,6 +8,7 @@ usage: ./build.sh [-x] [-a nt32|nt64] [-b debug|release] [-c] [-h] [-n]
         -c                      Clean ${PREFIX} before processing build scripts.
         -h                      Show this screen.
         -n                      Perform dry run.
+        -N                      Offline mode: no {wget,git-{clone,pull}}(1) calls.
         -r package[,...][:step] Restart the specified comma-separated build(s) completely or at
                                 the optionally specified step. Currently defined steps are:
                                 fetch extract build_dir autoconf patch configure clean build install
diff --git a/subr/pkg.subr b/subr/pkg.subr
index 2e0e36ae..accdd333 100644
--- a/subr/pkg.subr
+++ b/subr/pkg.subr
@@ -7,7 +7,8 @@
 fetch() {
 	_f_url="${1}"; _f_sha256sum_src="${2}";
 	_f_url_dst="${DLCACHEDIR}/$(basename "${_f_url}")";
-	if [ -e ${_f_url_dst}.fetched ]; then
+	if [ ${ARG_OFFLINE:-0} -eq 1 ]\
+	|| [ -e ${_f_url_dst}.fetched ]; then
 		unset _f_url _f_sha256sum_src _f_url_dst;
 		return 0;
 	else
@@ -25,16 +26,18 @@ fetch() {
 
 fetch_git() {
 	_fg_subdir="${1}"; _fg_url="${2}"; _fg_branch="${3}";
-	if [ -e "${DLCACHEDIR}/${_fg_subdir}" ]; then
-		cd ${DLCACHEDIR}/${_fg_subdir} &&\
-			git pull origin ${_fg_branch:-main} && cd ${OLDPWD};
-	else
-		git clone ${_fg_url} ${DLCACHEDIR}/${_fg_subdir};
-		if [ -n "${_fg_branch}" -a		\
-		     \( -z "${_fg_branch#main}" \) -a	\
-		     \( -z "${_fg_branch#master}" \) ]; then
+	if [ ${ARG_OFFLINE:-0} -eq 0 ]; then
+		if [ -e "${DLCACHEDIR}/${_fg_subdir}" ]; then
 			cd ${DLCACHEDIR}/${_fg_subdir} &&\
-				git checkout -b ${_fg_branch} && cd ${OLDPWD};
+				git pull origin ${_fg_branch:-main} && cd ${OLDPWD};
+		else
+			git clone ${_fg_url} ${DLCACHEDIR}/${_fg_subdir};
+			if [ -n "${_fg_branch}" -a		\
+			     \( -z "${_fg_branch#main}" \) -a	\
+			     \( -z "${_fg_branch#master}" \) ]; then
+				cd ${DLCACHEDIR}/${_fg_subdir} &&\
+					git checkout -b ${_fg_branch} && cd ${OLDPWD};
+			fi;
 		fi;
 	fi;
 	secure_rm ${_fg_subdir};
-- 
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