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Implement generic Sed rule

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Ingo Weinhold 2014-01-18 21:10:00 +01:00
parent e5ebc99d20
commit d4bfbab374
1 changed files with 88 additions and 0 deletions
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build/jam/FileRules
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@ -480,6 +480,94 @@ actions ChecksumFileSHA256
} }
rule Sed target : source : substitutions : targetMap
{
# Sed <target> : [ <source> ] : <substitutions> [ : <targetMap> ] ;
#
# Performs substitutions in a text file. If <source> is given, that is the
# input, otherwise the substitutions are performed in place on <target>. The
# caller is responsible for locating <target>, <source>, and any other used
# target.
#
# <target> - The target file.
# <source> - The source file. If not given, the substitutions are performed
# in place on <target>. If given, a dependency of <target> to <source>
# will be established.
# <substitutions> - List of substitutions to be performed. Each element
# specifies a substitution. It's a partial sed "s" command of the form
# "<pattern>,<replacement>".
# <targetMap> - A list of elements of the form "<variable>=<mappedTarget>".
# <variable> specifies a name of a shell variable, <mappedTarget> a jam
# target whose bound name will be assigned to the shell variable. The
# variable can be used in <substitutions>. A dependency of <target> to
# <mappedTarget> will be established.
# We need a temporary (shell) file to which we write the target variable
# mappings and the sed invocations. This is necessary, since multiple rule
# invocations are allowed for a target, so that we cannot use on-target
# variables.
local script = [ NextID ] ;
script = temp-sed-script-$(target:BS)-$(script) ;
# process the target variable mappings
local mappedTargets ;
local targetMapElement ;
for targetMapElement in $(targetMap) {
local split = [ Match ([^=]+)=(.*) : $(targetMapElement) ] ;
HAIKU_SED_SCRIPT_VARIABLE on $(script) += $(split[1]) ;
local mappedTarget = $(split[2]) ;
mappedTargets += $(mappedTarget) ;
}
HAIKU_SED_SCRIPT_SUBSTITUTIONS on $(script)
= "-e \"s,$(substitutions),g\"" ;
HAIKU_SED_SCRIPT_SOURCE on $(script) = $(source) ;
if $(source) {
HAIKU_SED_SCRIPT_SOURCE_ARGUMENTS on $(script) = ">" ;
} else {
HAIKU_SED_SCRIPT_SOURCE_ARGUMENTS on $(script) = -i ;
}
# build the script
MakeLocate $(script) : $(HAIKU_TMP_DIR) ;
Depends $(script) : $(mappedTargets) $(source) ;
SedCreateScript $(script) : $(mappedTargets) ;
# build the target
Depends $(target) : $(script) ;
Sed1 $(target) : $(script) ;
RmTemps $(target) : $(script) ;
}
actions SedCreateScript bind HAIKU_SED_SCRIPT_SOURCE
{
set -o errexit
$(RM) "$(1)"
touch "$(1)"
set -- $(2)
for variable in "$(HAIKU_SED_SCRIPT_VARIABLE)" ; do
echo "$variable=\"$1\"" >> "$(1)"
shift
done
echo sed '$(HAIKU_SED_SCRIPT_SUBSTITUTIONS)' \
'"$(HAIKU_SED_SCRIPT_SOURCE)"' "$(HAIKU_SED_SCRIPT_SOURCE_ARGUMENTS)" \
'"$target"' >> "$(1)"
}
actions Sed1
{
set -o errexit
target="$(1)"
. "$(2)"
}
rule StripFile target : source rule StripFile target : source
{ {
# Note: The caller is reponsible for matching TARGET_PACKAGING_ARCH with # Note: The caller is reponsible for matching TARGET_PACKAGING_ARCH with