cleanup and bashify install hooks

No logical code changes -- this is purely a syntactical cleanup and
standardization across the build hooks along with ensuring that help
messages are wrapped to 80 columns or less. All hooks get the same
treatment, adhering to the following style:

  #!/bin/bash

  build() {
      COMMANDS
  }

  help() {
      cat <<HELPEOF
  This is a help message.
  HELPEOF
  }

  # vim: set ft=sh ts=4 sw=4 et:

Signed-off-by: Dave Reisner <dreisner@archlinux.org>

1 files changed, 12 insertions, 18 deletions

diff --git a/install/usbinput b/install/usbinput
index e4bf27e..aa4e1a6 100644
--- a/install/usbinput
+++ b/install/usbinput
@@ -1,24 +1,18 @@
-# vim: set ft=sh:
+#!/bin/bash
 
-build()
-{
-    MODULES=" $(checked_modules "/usb/host" | grep -ve "_cs" -e "sl811_hcd" -e "isp116x_hcd") "
-    MODULES=" $(echo ${MODULES}) $(all_modules "/hid/hid-") "
+build() {
+    MODULES=" $(checked_modules "/usb/host" | grep -ve "_cs" -e "sl811_hcd" -e "isp116x_hcd")"
+    MODULES+=" $(all_modules "/hid/hid-")"
 
-    MODULES=$(echo ${MODULES}) #trim whitespace
-    if [ -n "${MODULES}" ]; then
-        MODULES="${MODULES} usbhid"
-    fi
-    BINARIES=""
-    FILES=""
-    SCRIPT=""
+    [[ $MODULES ]] && MODULES+=" usbhid"
 }
 
-help ()
-{
-cat<<HELPEOF
-  This hook loads the necessary modules for an usb input device.
-  Detection will take place at runtime. To minimize the modules
-  in the image, add the autodetect hook too.
+help() {
+    cat <<HELPEOF
+This hook loads the necessary modules for an usb input device.  Detection
+will take place at runtime. To minimize the modules in the image, add the
+autodetect hook too.
 HELPEOF
 }
+
+# vim: set ft=sh ts=4 sw=4 et: