[Xen-devel] [PATCH] xen/tools/get-fields.sh: Use printf for POSIX compat

[Alex Xu <alex_y_xu@xxxxxxxx>]

xen/tools/get-fields.sh used echo -n which is not POSIX compatible and
breaks building with dash (shell). Change it to use printf '%s' which
is usable everywhere.

Signed-off-by: Alex Xu <alex_y_xu@xxxxxxxx>
---
 xen/tools/get-fields.sh | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/xen/tools/get-fields.sh b/xen/tools/get-fields.sh
index 4547dc2..9c0b286 100644
--- a/xen/tools/get-fields.sh
+++ b/xen/tools/get-fields.sh
@@ -130,9 +130,9 @@ handle_field ()
                echo " \\"
                if [ -z "$4" ]
                then
-                       echo -n "$1(_d_)->$3 = (_s_)->$3;"
+                       printf "%s" "$1(_d_)->$3 = (_s_)->$3;"
                else
-                       echo -n "$1XLAT_${2}_HNDL_$(echo $3 | $SED 
's,\.,_,g')(_d_, _s_);"
+                       printf "%s" "$1XLAT_${2}_HNDL_$(echo $3 | $SED 
's,\.,_,g')(_d_, _s_);"
                fi
        elif [ -z "$(echo "$5" | $SED 's,[^{}],,g')" ]
        then
@@ -142,7 +142,7 @@ for line in sys.stdin.readlines():
     print re.subn(r"\s*(struct|union)\s+(compat_)?(\w+)\s.*", r"\3", 
line)[0].rstrip()
 ')
                echo " \\"
-               echo -n "${1}XLAT_$tag(&(_d_)->$3, &(_s_)->$3);"
+               printf "%s" "${1}XLAT_$tag(&(_d_)->$3, &(_s_)->$3);"
        else
                local level=1 kind= fields= id= array= arrlvl=1 array_type= 
type= token
                for token in $5
@@ -156,7 +156,7 @@ for line in sys.stdin.readlines():
                                        if [ $kind = union ]
                                        then
                                                echo " \\"
-                                               echo -n "${1}switch ($(echo $3 
| $SED 's,\.,_,g')) {"
+                                               printf "%s" "${1}switch ($(echo 
$3 | $SED 's,\.,_,g')) {"
                                        fi
                                fi
                                ;;
@@ -168,7 +168,7 @@ for line in sys.stdin.readlines():
                                if [ $level = 1 -a $kind = union ]
                                then
                                        echo " \\"
-                                       echo -n "$1}"
+                                       printf "%s" "$1}"
                                fi
                                ;;
                        "[")
@@ -223,7 +223,7 @@ for line in sys.stdin.readlines():
                                        if [ $kind = union ]
                                        then
                                                echo " \\"
-                                               echo -n "${1}case 
XLAT_${2}_$(echo $3.$id | $SED 's,\.,_,g'):"
+                                               printf "%s" "${1}case 
XLAT_${2}_$(echo $3.$id | $SED 's,\.,_,g'):"
                                                handle_field "$1    " $2 $3.$id 
"$type" "$fields"
                                        elif [ -z "$array" -a -z "$array_type" ]
                                        then
@@ -239,7 +239,7 @@ for line in sys.stdin.readlines():
                                        if [ $kind = union ]
                                        then
                                                echo " \\"
-                                               echo -n "$1    break;"
+                                               printf "%s" "$1    break;"
                                        fi
                                fi
                                ;;
@@ -259,7 +259,7 @@ copy_array ()
 {
        echo " \\"
        echo "${1}if ((_d_)->$2 != (_s_)->$2) \\"
-       echo -n "$1    memcpy((_d_)->$2, (_s_)->$2, sizeof((_d_)->$2));"
+       printf "%s" "$1    memcpy((_d_)->$2, (_s_)->$2, sizeof((_d_)->$2));"
 }
 
 handle_array ()
@@ -268,7 +268,7 @@ handle_array ()
        echo " \\"
        echo "$1{ \\"
        echo "$1    unsigned int $i; \\"
-       echo -n "$1    for ($i = 0; $i < "${4%%;*}"; ++$i) {"
+       printf "%s" "$1    for ($i = 0; $i < "${4%%;*}"; ++$i) {"
        if [ "$4" = "${4#*;}" ]
        then
                handle_field "$1        " $2 $3[$i] "$5" "$6"
@@ -277,13 +277,13 @@ handle_array ()
        fi
        echo " \\"
        echo "$1    } \\"
-       echo -n "$1}"
+       printf "%s" "$1}"
 }
 
 build_body ()
 {
        echo
-       echo -n "#define XLAT_$1(_d_, _s_) do {"
+       printf "%s" "#define XLAT_$1(_d_, _s_) do {"
        local level=1 fields= id= array= arrlvl=1 array_type= type= token
        for token in $2
        do
@@ -389,7 +389,7 @@ check_field ()
                                struct|union)
                                        ;;
                                [a-zA-Z_]*)
-                                       echo -n "    CHECK_${n#xen_}"
+                                       printf "%s" "    CHECK_${n#xen_}"
                                        break
                                        ;;
                                *)
@@ -400,9 +400,9 @@ check_field ()
                        done
                elif [ $n = 0 ]
                then
-                       echo -n "    CHECK_FIELD_($1, $2, $3)"
+                       printf "%s" "    CHECK_FIELD_($1, $2, $3)"
                else
-                       echo -n "    CHECK_SUBFIELD_${n}_($1, $2, $(echo $3 | 
$SED 's!\.!, !g'))"
+                       printf "%s" "    CHECK_SUBFIELD_${n}_($1, $2, $(echo $3 
| $SED 's!\.!, !g'))"
                fi
        else
                local level=1 fields= id= token
@@ -446,7 +446,7 @@ build_check ()
                        if [ $level = 1 ]
                        then
                                kind=$token
-                               echo -n "    CHECK_SIZE_($kind, $1)"
+                               printf "%s" "    CHECK_SIZE_($kind, $1)"
                        elif [ $level = 2 ]
                        then
                                fields=" "
-- 
2.6.4


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