IMPORTANT: print-general-metadata new name for print-copyright

Summary:
 - Use the new name of this variable in your Makefiles.
 - In 'metadata.conf', remove fixed URL prefixes for DOIs
   ('https://doi.org/') or arXiv ('https://arxiv.org/abs').

Until now, the Make variable that would print the general metadata (of
whole project) into each to-be-published dataset was called
'print-copyright'! But it now does much more than simply printing the
copyright, it will also print a lot of metadata like arXiv ID, Zenodo DOI
and etc into plain-text outputs. The out-dated name could thus be
misleading and cause confusions.

With this commit, the variable is therefore called
'print-general-metadata'. After merging your project with the Maneage
branch, please replace any usage of 'print-copyright' to
'print-general-metadata'.

Also with this commit, 'README-hacking.md' mentions 'metadata.conf' and
'print-general-metadata' in the "Publication checklist" section and reminds
you to keep the first up to date, and use the second in your
to-be-published datasets.

3 files changed, 36 insertions, 13 deletions

diff --git a/reproduce/analysis/config/metadata.conf b/reproduce/analysis/config/metadata.conf
index e92a057..aaf2ca0 100644
--- a/reproduce/analysis/config/metadata.conf
+++ b/reproduce/analysis/config/metadata.conf
@@ -1,6 +1,19 @@
-# Project meta-data that can be used in a project's output datasets and
+# Project meta-data that will be used in a project's output datasets and
 # final paper. Please set the values here and use them in your analysis or
-# paper, don't repeat them
+# paper, don't repeat them.
+#
+# These variables are used in 'reproduce/analysis/make/initialize.mk': 1)
+# to create a Make variable called 'print-general-metadata'. You can simply
+# print this variable's value in any plain-text output.
+#
+# Why add a Copyright for the data? people need to know if they can "use"
+# the dataset (i.e., modify it), or possibly re-distribute it and their
+# derived products. They also need to know how they can contact the creator
+# of the datset (who is usually also the copyright owner). So take this
+# seriously and add your name and email-address (or the name of the person
+# and email of the person who was in charge of that part of the project),
+# and the copyright license name and standard link to the fully copyright
+# license.
 #
 # Copyright (C) 2020-2021 Mohammad Akhlaghi <mohammad@akhlaghi.org>
 #
@@ -12,7 +25,9 @@
 # Project information
 metadata-title = The project title goes here
 
-# DOIs and identifiers.
+# DOIs and identifiers (don't include fixed URL prefixes like
+# 'https://doi.org/' or 'https://arxiv.org/abs'), they will be added
+# automatically where necessary.
 metadata-arxiv =
 metadata-doi-zenodo =
 metadata-doi-journal =
diff --git a/reproduce/analysis/make/delete-me.mk b/reproduce/analysis/make/delete-me.mk
index f275051..c160e51 100644
--- a/reproduce/analysis/make/delete-me.mk
+++ b/reproduce/analysis/make/delete-me.mk
@@ -48,7 +48,7 @@ $(dm-squared): $(pconfdir)/delete-me-squared-num.conf | $(tex-publish-dir)
 	echo "# Column 2: X_POW2  [arbitrary, f32] The horizontal axis to the power of two." \
 	     >> $@.tmp
 	echo "# " >> $@.tmp
-	$(call print-copyright, $@.tmp)
+	$(call print-general-metadata, $@.tmp)
 
         # Generate the table of random values.
 	awk 'BEGIN {for(i=1;i<=$(delete-me-squared-num);i+=0.5) \
@@ -107,7 +107,7 @@ $(dm-img-histogram): $(tex-publish-dir)/%-histogram.txt: $(indir)/%.fits \
 	echo "# " >> $@.tmp
 	awk '/^# Column .:/' $@.data >> $@.tmp
 	echo "# " >> $@.tmp
-	$(call print-copyright, $@.tmp)
+	$(call print-general-metadata, $@.tmp)
 
         # Add the column numbers in a formatted manner, rename it to the
         # output and clean up.
diff --git a/reproduce/analysis/make/initialize.mk b/reproduce/analysis/make/initialize.mk
index 15a4dbf..744ecbf 100644
--- a/reproduce/analysis/make/initialize.mk
+++ b/reproduce/analysis/make/initialize.mk
@@ -461,19 +461,27 @@ $(data-publish-dir):; mkdir $@
 # Print Copyright statement
 # -------------------------
 #
-# This statement can be used in published datasets that are in plain-text
-# format. It assumes you have already put the data-specific statements in
-# its first argument, it will supplement them with general project links.
-print-copyright = \
+# The 'print-general-metadata' can be used to print the general metadata in
+# published datasets that are in plain-text format. It should be called
+# with make's 'call' function like this (where 'FILENAME' is the name of
+# the file it will append this content to):
+#
+#    $(call print-general-metadata, FILENAME)
+#
+# See 'reproduce/analysis/make/delete-me.mk' (in the Maneage branch) for a
+# real-world usage of this variable.
+doi-prefix-url   = https://doi.org
+arxiv-prefix-url = https://arxiv.org/abs
+print-general-metadata = \
 	echo "\# Project title: $(metadata-title)" >> $(1); \
 	echo "\# Git commit (that produced this dataset): $(project-commit-hash)" >> $(1); \
-	echo "\# Project's Git repository: $(metadata-git-repository)" >> $(1); \
+	echo "\# Git repository: $(metadata-git-repository)" >> $(1); \
 	if [ x$(metadata-arxiv) != x ]; then \
-	  echo "\# Pre-print server: https://arxiv.org/abs/$(metadata-arxiv)" >> $(1); fi; \
+	  echo "\# Pre-print: $(arxiv-prefix-url)/abs/$(metadata-arxiv)" >> $(1); fi; \
 	if [ x$(metadata-doi-journal) != x ]; then \
-	  echo "\# DOI (Journal): $(metadata-doi-journal)" >> $(1); fi; \
+	  echo "\# DOI (Journal): $(doi-prefix-url)/$(metadata-doi-journal)" >> $(1); fi; \
 	if [ x$(metadata-doi-zenodo) != x ]; then \
-	echo "\# DOI (Zenodo): $(metadata-doi-zenodo)" >> $(1); fi; \
+	echo "\# DOI (Zenodo): $(doi-prefix-url)/$(metadata-doi-zenodo)" >> $(1); fi; \
 	echo "\#" >> $(1); \
 	echo "\# Copyright (C) $$(date +%Y) $(metadata-copyright-owner)" >> $(1); \
 	echo "\# Dataset is available under $(metadata-copyright)." >> $(1); \