Pipe id function instead of calling in subshell

diff --git a/GNUmakefile b/GNUmakefile
index f173dba33fbec773bde1f805191cf2271194c321..357b3bc25d2c397388aa4681eac564d968857d58 100644 (file)
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -265,11 +265,6 @@ override assetfiles := $(filter-out $(xmlfiles) $(plaintextfiles),$(sourcefiles)
 # (callable) Get the types of the given files.
 override typeoffile = $(patsubst $(foreach file,$1,$(file)|%),%,$(filter $(foreach file,$1,$(file)|%),$(types)))
 
-# (callable) Get the identifier for the given parser or transform.
-#
-# ☡ This variable creates a subshell every time it is computed.
-override id = $(or $(shell $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $1 2> /dev/null),about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
-
 # Pair each source magic file with its location in the build directory.
 override magicpair := $(foreach magicfile,$(MAGIC),$(magicfile)|$(BUILDDIR)/magic/$(notdir $(magicfile)))
 
@@ -377,6 +372,9 @@ endif
 # (callable) Check to see if the given directory exists and create it if not.
 override ensuredirectory = if $(TEST) ! -d $(call quote,$1); then $(MKDIR) -p $(call quote,$1); fi
 
+# (callable) Get the identifier for the given parser or transform.
+override id = $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $(call quote,$1) 2> /dev/null || $(PRINTF) '%s\n' $(call quote,about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
+
 # (callable) Sanitize and wrap the provided plaintext file in X·M·L, printing to `stdout´.
 override wrapplaintext = $(PRINTF) '%s\n' "$$($(PRINTF) '%b' '<?xml version=\042\061.0\042?>\n<script xmlns=\042http://www.w3.org/1999/xhtml\042 type=\042$(call typeoffile,$1)\042><![CDATA['; $(CAT) $(call quote,$1) | $(TR) '\000\013\014' '\032\011\012' | $(SED) $$($(PRINTF) '%s%b' 's/]]>/]]]]><!\[CDATA\[>/g;s/\xEF\xBF\xBE/�/g;s/\xEF\xBF\xBF/�/g;$$!s/\r$$//g;s/\r/\n/g;$$!s/\xC2\x85$$//g;s/\xC2\x85/\n/g;s/\xE2\x80\xA8/\n/g;' 's/[\0001-\0010]/�/g;s/[\0016-\0037]/�/g'); $(PRINTF) '%s' ']]></script>')"
 
@@ -470,7 +468,7 @@ $(BUILDDIR)/magic.mgc : $(call magicfile,$(MAGIC))
 $(BUILDDIR)/parser.catalog : $(PARSERS)
        @$(ECHO) "Generating catalog of parsers…"
        $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
-       $(foreach parser,$(PARSERS),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call id,$(parser),parser)) $(call quote,$(call fileuri,$(parser))) --noout $(call quote,$@)$(newline))
+       $(foreach parser,$(PARSERS),$(silent)( $(call id,$(parser)) ) | $(XARGS) -I %% $(XMLCATALOG) --add uri %% $(call quote,$(call fileuri,$(parser))) --noout $(call quote,$@)$(newline))
 $(BUILDDIR)/parser.xslt: $(BUILDDIR)/parser.catalog $(THISDIR)/lib/catalog2parser.xslt
        @$(ECHO) "Generating main parser…"
        $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2parser.xslt) $(call quote,$<)
@@ -509,7 +507,7 @@ $(BUILDDIR)/destinations : $(BUILDDIR)/catalog $(call parsed,$(filter-out $(asse
 $(BUILDDIR)/transform.catalog : $(TRANSFORMS)
        @$(ECHO) "Generating catalog of transforms…"
        $(silent)$(XMLCATALOG) --create --noout $(call quote,$@)
-       $(foreach transform,$(TRANSFORMS),$(silent)$(XMLCATALOG) --add uri $(call quote,$(call id,$(transform),transform)) $(call quote,$(call fileuri,$(transform))) --noout $(call quote,$@)$(newline))
+       $(foreach transform,$(TRANSFORMS),$(silent)( $(call id,$(transform)) ) | $(XARGS) -I %% $(XMLCATALOG) --add uri %% $(call quote,$(call fileuri,$(transform))) --noout $(call quote,$@)$(newline))
 $(BUILDDIR)/transform.xslt : $(BUILDDIR)/transform.catalog $(THISDIR)/lib/catalog2transform.xslt
        @$(ECHO) "Generating main transform…"
        $(silent)$(XSLTPROC) -o $(call quote,$@) $(call quote,$(THISDIR)/lib/catalog2transform.xslt) $(call quote,$<)