Merge topic branch t/gui into pu

[gsu.git] / common

diff --git a/common b/common
index eaa5751b43a9133fba3e497b5d45babe1e46b0e9..374b81e0498defc0d6895d3617fe3970f06a3cd3 100644 (file)
--- a/common
+++ b/common
@@ -1,5 +1,6 @@
 #!/bin/bash
-# (C) 2006-2011 Andre Noll
+# Copyright (C) 2006 Andre Noll
+# Licensed under the LGPL, version 3. See COPYING and COPYING.LESSER.
 
 _gsu_init_errors()
 {
@@ -13,9 +14,14 @@ E_GSU_BAD_BOOL                       bad value for boolian option
 E_GSU_BAD_OPTION_TYPE          invalid option type
 E_GSU_BAD_ARG_COUNT            invalid number of arguments
 E_GSU_EDITOR                   failed to execute editor
+E_GSU_INVAL                    invalid argument
 E_GSU_MKDIR                    failed to create directory
 E_GSU_GETOPTS                  getopts error
-$gsu_errors
+E_GSU_DIALOG                   dialog error
+E_GSU_MKTEMP                   mktemp error
+E_GSU_MENU_TREE                        invalid menu tree
+E_GSU_XCMD                     external command failed
+${gsu_errors:-}
 "
        local a b i=0
        while read a b; do
@@ -25,7 +31,7 @@ $gsu_errors
                #echo "a:$a,  b: $b"
                gsu_error_txt[i]="$b"
                eval $a=$i
-               i=$(($i + 1))
+               i=$((i + 1))
        done << EOF
        $gsu_errors
 EOF
@@ -35,7 +41,7 @@ EOF
 gsu_is_a_number()
 {
        result="$1"
-       if (("$1" == "$1")) &> /dev/null; then
+       if [ "$1" -eq "$1" ] &> /dev/null; then
                ret=$GSU_SUCCESS
        else
                ret=-$E_GSU_NOT_A_NUMBER
@@ -62,15 +68,15 @@ gsu_err_msg()
        local txt="$result" err
 
        gsu_is_a_number "$ret"
-       if (($ret < 0)); then
+       if ((ret < 0)); then
                gsu_msg "unknown error ($ret:$txt)"
                exit 1
        fi
-       if (($result >= 0)); then
+       if ((result >= 0)); then
                gsu_msg "unknown error ($result:$txt)"
                exit 1
        fi
-       err=$((0 - $result))
+       err=$((0 - result))
        if test -n "$txt"; then
                txt="$txt: ${gsu_error_txt[$err]}"
        else
@@ -86,3 +92,35 @@ _gsu_setup()
        gsu_banner_txt="${gsu_banner_txt:-set \$gsu_banner_txt to customize this message}"
        _gsu_init_errors
 }
+
+# We'd love to use mktemp -t here, but on Linux -t is deprecated in favor of
+# --tempdir, which is not supported on *BSD. Hence we have to implement our own
+# logic for -t.
+#
+# The second parameter to this function is optional. It is ignored if the
+# template ($1) is an absolute path. Conversely, if the template is a relative
+# path and a second parameter is given, $2 is assumed to be the directory in
+# which the temporary file should be created.
+gsu_make_tempfile()
+{
+       local template="$1"
+       local dir
+
+       if [[ "${template:0:1}" != '/' ]]; then # relative path
+               if (($# > 1)); then
+                       dir="$2"
+               elif [[ -n "${TMPDIR:-}" ]]; then
+                       dir="$TMPDIR"
+               else
+                       dir="/tmp"
+               fi
+               template="$dir/$template"
+       fi
+       result="$(mktemp "$template")"
+       if (($? != 0)); then
+               ret=-$E_GSU_MKTEMP
+               result="template: $template"
+               return
+       fi
+       ret=$GSU_SUCCESS
+}