From 7edc30ad40cd5dc033bc8f0e914b951abf6d0527 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Tue, 25 Feb 2020 15:51:34 +0100
Subject: Add the query-deps family of targets

The query-deps, query-doc-deps, query-rel-deps, query-test-deps
and query-shell-deps targets go through dependencies and print
some information about them:

  $ make query-deps
  ...
  cowboy: cowlib git https://github.com/ninenines/cowlib 2.7.3
  cowboy: ranch git https://github.com/ninenines/ranch 1.7.1

  $ make query-deps QUERY="name repo version absolute_path"
  ...
  cowboy: cowlib https://github.com/ninenines/cowlib 2.7.3 /path/to/deps/cowlib
  cowboy: ranch https://github.com/ninenines/ranch 1.7.1 /path/to/deps/ranch

The query-deps target is recursive; the others aren't. This
mirrors the behavior when fetching and building dependencies.

The full list of options is:

  QUERY="fetch_method name repo version extra absolute_path"

When an option has no corresponding value, "-" will be printed.
For example most fetch methods do not have extra information to
print. When there is extra information, the value will be prefixed
with a descriptive name. For example: package-name=uuid_erl

This commit also introduces changes to deps handling: some of
the functions for querying will now be used directly. In the
future the goal is to remove the old dep_name, dep_commit, etc.
functions and replace their usage with the new query functions.

Custom fetch methods should implement query functions in order
to have information about the relevant dependencies printed
properly.
---
 core/deps-tools.mk | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'core/deps-tools.mk')

diff --git a/core/deps-tools.mk b/core/deps-tools.mk
index e3eb913..2a632e4 100644
--- a/core/deps-tools.mk
+++ b/core/deps-tools.mk
@@ -97,3 +97,43 @@ list-shell-deps: $(ERLANG_MK_RECURSIVE_SHELL_DEPS_LIST)
 
 list-deps list-doc-deps list-rel-deps list-test-deps list-shell-deps:
 	$(verbose) cat $^
+
+# Query dependencies recursively.
+
+.PHONY: query-deps query-doc-deps query-rel-deps query-test-deps \
+	query-shell-deps
+
+QUERY ?= name fetch_method repo version
+
+define query_target
+$(1): $(2) clean-tmp-query.log
+ifeq ($(IS_APP)$(IS_DEP),)
+	$(verbose) rm -f $(4)
+endif
+	$(verbose) $(foreach dep,$(3),\
+		echo $(PROJECT): $(foreach q,$(QUERY),$(call query_$(q),$(dep))) >> $(4) ;)
+	$(if $(filter-out query-deps,$(1)),,\
+		$(verbose) set -e; for dep in $(3) ; do \
+			if grep -qs ^$$$$dep$$$$ $(ERLANG_MK_TMP)/query.log; then \
+				:; \
+			else \
+				echo $$$$dep >> $(ERLANG_MK_TMP)/query.log; \
+				$(MAKE) -C $(DEPS_DIR)/$$$$dep $$@ QUERY="$(QUERY)" IS_DEP=1 || true; \
+			fi \
+		done)
+ifeq ($(IS_APP)$(IS_DEP),)
+	$(verbose) touch $(4)
+	$(verbose) cat $(4)
+endif
+endef
+
+clean-tmp-query.log:
+ifeq ($(IS_DEP),)
+	$(verbose) rm -f $(ERLANG_MK_TMP)/query.log
+endif
+
+$(eval $(call query_target,query-deps,$(ERLANG_MK_RECURSIVE_DEPS_LIST),$(BUILD_DEPS) $(DEPS),$(ERLANG_MK_QUERY_DEPS_FILE)))
+$(eval $(call query_target,query-doc-deps,$(ERLANG_MK_RECURSIVE_DOC_DEPS_LIST),$(DOC_DEPS),$(ERLANG_MK_QUERY_DOC_DEPS_FILE)))
+$(eval $(call query_target,query-rel-deps,$(ERLANG_MK_RECURSIVE_REL_DEPS_LIST),$(REL_DEPS),$(ERLANG_MK_QUERY_REL_DEPS_FILE)))
+$(eval $(call query_target,query-test-deps,$(ERLANG_MK_RECURSIVE_TEST_DEPS_LIST),$(TEST_DEPS),$(ERLANG_MK_QUERY_TEST_DEPS_FILE)))
+$(eval $(call query_target,query-shell-deps,$(ERLANG_MK_RECURSIVE_SHELL_DEPS_LIST),$(SHELL_DEPS),$(ERLANG_MK_QUERY_SHELL_DEPS_FILE)))
-- 
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