posix

bootstrap.sh

@@ -24,21 +24,33 @@ grep=$(PATH=$PH command -v grep)
 iconv=$(PATH=$PH command -v iconv)
 ls=$(PATH=$PH command -v ls)
 mkdir=$(PATH=$PH command -v mkdir)
-printf=$(PATH=$PH command -v printf)
 ps=$(PATH=$PH command -v ps)
 rm=$(PATH=$PH command -v rm)
 sed=$(PATH=$PH command -v sed)
 sort=$(PATH=$PH command -v sort)
 tr=$(PATH=$PH command -v tr)
 uname=$(PATH=$PH command -v uname)
-uniq=$(PATH=$PH command -v uniq)
-xargs=$(PATH=$PH command -v xargs)
+
+# check command options
+check_echo_opt () {
+  # check the echo's "-n" option and "\c" capability
+  echo_c='\c'
+  if echo "test\c" | grep -q c; then
+    echo_c=
+  fi
+  echo_n=-n
+  if echo -n test | tr '\n' _ | grep -q _; then
+    echo_n=
+  fi
+}
+check_echo_opt
 
 bootstrap_path () {
-  local p="$($dirname $0)"
-  local n="$(pwd)/.nore"
+  local p="`dirname $0`"
+  local n="${PWD}/.nore"
 
   if [ -d "${p}" ]; then
+    p="`( cd \"${p}\" && pwd )`"
     if [ -z "$p" -o "/dev/fd" = "$p" ]; then
       echo "$n"
     elif [ ! -f "${p}/auto/configure" ]; then
@@ -51,10 +63,10 @@ bootstrap_path () {
   fi
 }
 
-ROOT="${ROOT:-$(bootstrap_path)}"
-NORE_WORK="$(pwd)"
+ROOT="${ROOT:-`bootstrap_path`}"
+NORE_WORK="$PWD"
 
-PLATFORM="$($uname -s 2>/dev/null)"
+PLATFORM="`uname -s 2>/dev/null`"
 GITHUB_R="${GITHUB_R:-https://raw.githubusercontent.com/junjiemars}"
 GITHUB_H="${GITHUB_H:-https://github.com/junjiemars}"
 
@@ -64,7 +76,7 @@ NORE_BRANCH=master
 for option
 do
   case "$option" in
-    -*=*) value=$(echo "$option" | $sed -e 's/[-_a-zA-Z0-9]*=//') ;;
+    -*=*) value=`echo "$option" | sed -e 's/[-_a-zA-Z0-9]*=//'` ;;
     *) value="" ;;
   esac
 
@@ -74,7 +86,7 @@ do
     --work=*)                NORE_WORK="$value"         ;;
 
     *)
-      command="$(echo "$option" | tr '[:upper:]' '[:lower:]')"
+      command="`echo $option | tr '[:upper:]' '[:lower:]'`"
       ;;
   esac
 done
@@ -108,9 +120,10 @@ on_linux () {
 
 check_nore () {
   local r="junjiemars/nore"
-  if $git -C "${ROOT}" remote -v 2>/dev/null | $grep -q ${r}; then
-    if [ "$(check_nore_branch)" != "${NORE_BRANCH}" -a "${ROOT}" != "$(pwd)/.nore" ]; then
-      ROOT="$(pwd)/.nore"
+  if $(git -C "${ROOT}" remote -v 2>/dev/null | grep -q "${r}"); then
+    if [ "`check_nore_branch`" != "${NORE_BRANCH}" ] \
+         && [ "${ROOT}" != "${PWD}/.nore" ]; then
+      ROOT="${PWD}/.nore"
       test -d "${ROOT}" && rm -rf "${ROOT}"
       return 1
     else
@@ -154,6 +167,22 @@ cat_configure () {
 # generated by Nore (${GITHUB_H}/nore)
 #------------------------------------------------
 
+check_echo_opt () {
+  # check the echo's "-n" option and "\c" capability
+  if echo "test\c" | grep -q c; then
+    echo_c=
+    if echo -n test | tr '\n' _ | grep -q _; then
+      echo_n=
+    else
+      echo_n=-n
+    fi
+  else
+    echo_n=
+    echo_c='\c'
+  fi
+}
+check_echo_opt
+
 NORE_ROOT="${ROOT%/}"
 NORE_BRANCH="${b}"
 NORE_L_BOOT="\${NORE_ROOT}/bootstrap.sh"
@@ -181,7 +210,7 @@ do
   esac
 done
 
-case "\$(echo \${NORE_L_CONF_COMMAND} | tr '[:upper:]' '[:lower:]')" in
+case "\`echo \${NORE_L_CONF_COMMAND} | tr '[:upper:]' '[:lower:]'\`" in
   upgrade)
     if [ -f \${NORE_L_BOOT} ]; then
       \$NORE_L_BOOT --branch=\${NORE_BRANCH} upgrade
@@ -271,6 +300,8 @@ else
   echo
 fi
 
+# eof
+
 END
 
   chmod u+x "$new_conf"
@@ -440,17 +471,18 @@ END
 echo_yes_or_no () {
   local c="$1"
   if [ 0 -eq $c ]; then
-    $printf "yes\n"
+    echo "yes"
   else
-    $printf "no\n"
+    echo "no"
   fi
   return $c
 }
 
 echo_elapsed_seconds () {
   local begin=$1
   local end="`date +%s`"
-  $printf "\n... elpased %d seconds\n" $(( ${end}-${begin} ))
+  echo
+  echo "... elpased $(( ${end}-${begin} )) seconds."
 }
 
 exit_checking () {
@@ -465,7 +497,7 @@ exit_checking () {
 download_gmake () {
   local env_dir="${1:-${HOME}/.nore}"
   local ver="4.2.90"
-  local tgz="gnumake-${ver}-$($uname -m).tar.gz"
+  local tgz="gnumake-${ver}-`uname -m`.tar.gz"
   local url="${GITHUB_H}/make/releases/download/${ver}/${tgz}"
   local bin="${env_dir}/make.exe"
   local t=0
@@ -492,39 +524,39 @@ echo
 echo "configure Nore on $PLATFORM ..."
 echo
 
-$printf " + checking make ... "
-if $(make -v 1>/dev/null 2>&1); then
+echo $echo_n " + checking make ... $echo_c"
+if `make -v 1>/dev/null 2>&1`; then
   echo_yes_or_no $?
 else
   echo_yes_or_no $?
-  if on_windows_nt; then
-    $printf " + downloading make ... "
-    echo_yes_or_no $(download_gmake "${HOME}/.nore"; echo $?)
+  if `on_windows_nt`; then
+    echo $echo_n " + downloading make ... $echo_c"
+    echo_yes_or_no `download_gmake "${HOME}/.nore"; echo $?`
   fi
 fi
 
-[ -d "${ROOT}" ] || mkdir -p "${ROOT}"
+# [ -d "${ROOT}" ] || mkdir -p "${ROOT}"
 
-$printf " + checking nore ... "
+echo $echo_n " + checking nore ... $echo_c"
 if check_nore; then
   echo_yes_or_no $?
   if [ "yes" = "$NORE_UPGRADE" ]; then
-    $printf " + upgrading nore ... "
+    echo $echo_n " + upgrading nore ... $echo_c"
     echo_yes_or_no `upgrade_nore ; echo $?`
     exit_checking $? $BEGIN
   fi
 else
   echo_yes_or_no $?
-  $printf $echo_n " + cloning nore ... "
-  echo_yes_or_no $(clone_nore ; echo $?)
+  echo $echo_n " + cloning nore ... $echo_c"
+  echo_yes_or_no `clone_nore ; echo $?`
   exit_checking $? $BEGIN
 fi
 
-$printf " + generating configure ... "
-echo_yes_or_no $(cat_configure ; echo $?)
+echo $echo_n " + generating configure ... $echo_c"
+echo_yes_or_no `cat_configure ; echo $?`
 exit_checking $? $BEGIN
 
-$printf " + generating ~/.nore/cc-env.sh ... "
+echo $echo_n " + generating ~/.nore/cc-env.sh ... $echo_c"
 echo_yes_or_no $(cat_cc_env "${HOME}/.nore/cc-env.sh"; echo $?)
 exit_checking $? $BEGIN