║│ • file │║
║│ • find │║
║│ • git (optional) │║
+║│ • ln │║
║│ • mkdir (requires support for `-p´) │║
║│ • mv │║
║│ • od (requires support for `-t x1´) │║
FILE := file
FIND := find
GIT := git
+LN := ln
MKDIR := mkdir
MV := mv
OD := od
# By default, this is inferred from the variable `MAKEFILE_LIST´.
THISDIR := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
-# The location of the magic files to use when determining media types.
-#
-# One is provided as part of this repository, but you can override it if you need different media type detection.
-#
-# Your computer probably has a more comprehensive one installed at `/usr/share/file/magic´, but it is not recommended that you use this directly.
-# Instead, link or copy just the files you expect to need for your project.
-MAGICDIR := $(patsubst ./%,%,$(THISDIR)/magic)
-
# Configuration of `find´.
#
# By default, `find´ will ignore files which begin with a period and those which are likely to cause problems for `make´.
FINDRULES := ! '(' '(' -name '[.-]*' -o -name '*[][*?:|$$%\#\\; ]*' ')' -a -prune ')'$(if $(EXTRAFINDRULES), -a $(EXTRAFINDRULES),)
FINDINCLUDERULES := $(FINDRULES)$(if $(EXTRAFINDINCLUDERULES), -a $(EXTRAFINDINCLUDERULES),)
+# The list of magic files to use when determining media types.
+#
+# Some are provided as part of this repository, but you can add more if you need different media type detection.
+#
+# Your computer probably has several already installed at `/usr/share/file/magic´.
+EXTRAMAGIC :=
+MAGIC := $(sort $(patsubst ./%,%,$(wildcard $(THISDIR)/magic/*)) $(EXTRAMAGIC))
+
# The list of parsers for plaintext file types.
#
# Which parsers are provided will influence which kinds of files are recognized as plaintext.
# (callable) Get the identifier for the given parser or transform.
override id = $(or $(shell $(XMLLINT) --xpath '/*/*[local-name()="id" and namespace-uri()="urn:fdc:ladys.computer:20231231:Shu1She4"]/text()[1]' $1 2> /dev/null),about:shushe?$(or $2,unknown)=$(call pathenc,$(basename $(notdir $1))))
+# Pair each source magic file with its location in the build directory.
+override magicpair := $(foreach magicfile,$(MAGIC),$(magicfile)|$(BUILDDIR)/magic/$(notdir $(magicfile)))
+
+# (callable) Get the source file for the given magic files.
+override magicsource = $(foreach magicpath,$1,$(patsubst %|$(magicpath),%,$(firstword $(filter %|$(magicpath),$(magicpair)))))
+
+# (callable) Get the build file for the given magic files.
+override magicfile = $(foreach file,$1,$(patsubst $(file)|%,%,$(filter $(file)|%,$(magicpair))))
+
# (callable) Get the local path for the given source file.
override sourcepath = $(firstword $(foreach directory,$(SRCDIR),$(if $(filter $(directory)/%,$1),$(patsubst $(directory)/%,%,$1),)))
# ─ ¶ Build Targets ───────────────────────────────────────────────────
+# Create symbolic links from the build directory’s store of magic files
+# to their corresponding sources.
+$(call magicfile,$(MAGIC)): $(BUILDDIR)/magic/%: $$(call magicsource,$$@)
+ $(silent)$(call ensuredirectory,$(dir $@))
+ $(silent)$(LN) -sf $(call quote,$(realpath $<)) $(call quote,$@)
+
# Generate the compiled magic file from its sources.
#
# It must be updated if any of the files in the magic directory change.
# It ⁜also⁜ should be updated if any of the files in the magic directory are deleted, but this isn’t tracked presently.
-$(BUILDDIR)/magic.mgc: $(wildcard $(MAGICDIR)/*)
+$(BUILDDIR)/magic.mgc: $(call magicfile,$(MAGIC))
+ $(foreach outdated,$(filter-out $^,$(wildcard $(BUILDDIR)/magic/*)),$(silent)$(RM) $(call quote,$(outdated))$(newline))
@$(ECHO) "Compiling new magic…"
$(silent)$(call ensuredirectory,$(dir $@))
- $(silent)cd $(call quote,$(BUILDDIR)) && $(FILE) -C -m $(call quote,$(realpath $(MAGICDIR)))
+ $(silent)cd $(call quote,$(BUILDDIR)) && $(FILE) -C -m $(call quote,$(realpath $(BUILDDIR)/magic))
# Generate the main parser.
$(BUILDDIR)/parser.catalog: $(PARSERS)