libphobos: Add scripts to update Makefile.am after an upstream merge

These two scripts have been used for updating Makefile.am whenever
there's been a file added/removed from either Druntime or Phobos since
the start, but never included in the source tree.

libphobos/ChangeLog:

	* libdruntime/Makefile.am: Update comment.
	* libdruntime/Makefile.in: Regenerate.
	* src/Makefile.am: Update comment.
	* src/Makefile.in: Regenerate.
	* scripts/.gitignore: New file.
	* scripts/README: New file.
	* scripts/gen_druntime_sources.d: New file.
	* scripts/gen_phobos_sources.d: New file.

libphobos/libdruntime/Makefile.am

@@ -167,7 +167,7 @@ install-data-local:
 	done
 
 # Source file definitions. Boring stuff, auto-generated with
-# https://gist.github.com/jpf91/8ad1dbc9902d6ad876313f134c6527d1
+# libphobos/scripts/gen_druntime_sources.d
 # Can't use wildcards here:
 # https://www.gnu.org/software/automake/manual/html_node/Wildcards.html
 

libphobos/libdruntime/Makefile.in

@@ -850,7 +850,7 @@ libgdruntime_convenience_la_DEPENDENCIES = $(libgdruntime_la_DEPENDENCIES)
 libgdruntime_convenience_la_LINK = $(libgdruntime_la_LINK)
 
 # Source file definitions. Boring stuff, auto-generated with
-# https://gist.github.com/jpf91/8ad1dbc9902d6ad876313f134c6527d1
+# libphobos/scripts/gen_druntime_sources.d
 # Can't use wildcards here:
 # https://www.gnu.org/software/automake/manual/html_node/Wildcards.html
 DRUNTIME_CSOURCES = core/stdc/errno_.c etc/valgrind/valgrind_.c

libphobos/scripts/.gitignore

@@ -0,0 +1,3 @@
+# Dub leaves built programs in this directory.
+gen_druntime_sources
+gen_phobos_sources

libphobos/scripts/README

@@ -0,0 +1,28 @@
+The D language scripts in this directory are used during the syncing of
+libphobos with upstream.  They can be built with the command:
+
+    dub build --single name-of-script.d
+
+Or when dub isn't available:
+
+    gdc -o name-of-script name-of-script.d [any other dependencies].d
+
+Scripts:
+
+gen_druntime_sources.d
+
+    Generates source file definitions for libphobos/libdruntime/Makefile.am.
+    Ran from the libdruntime directory and append output to Makefile.am.
+
+    Example:
+
+	cd libdruntime && ../scripts/gen_druntime_sources >> Makefile.am
+
+gen_phobos_sources.d
+
+    Generates source file definitions for libphobos/src/Makefile.am.  Ran from
+    the libphobos/src directory and append output to Makefile.am.
+
+    Example:
+
+	cd src && ../scripts/gen_phobos_sources >> Makefile.am

libphobos/scripts/gen_druntime_sources.d

@@ -0,0 +1,92 @@
+#!/usr/bin/env dub
+/++dub.sdl:
+name "gen_druntime_sources"
++/
+// Written in the D programming language.
+import std.stdio;
+import std.file;
+import std.path;
+import std.range;
+import std.string;
+import std.algorithm;
+
+string[] filterList = [
+    "./Makefile.in", "./Makefile.am",
+    "./gcc/config.d.in", "./gcc/libbacktrace.d.in", "./gcc/drtstuff.c",
+    "./LICENSE.txt", "./MERGE",
+    "./rt/dylib_fixes.c"
+];
+
+struct Files
+{
+    string[] baseList, cppList;
+    string[][string] sysList;
+}
+
+void main(string[] args)
+{
+    Files[string] fileMap;
+
+    foreach(entry; ".".dirEntries(SpanMode.depth).filter!(a => !filterList.canFind(a)))
+    {
+        if (entry.name.startsWith("./config/"))
+            continue;
+
+        if(entry.isFile)
+        {
+            auto ext = entry.extension.empty ? "" : entry.extension[1 .. $];
+            if(!(ext in fileMap))
+                fileMap[ext] = Files.init;
+
+            string sentry = entry[2 .. $];
+
+            if(entry.name.startsWith("./core/stdcpp/"))
+                fileMap[ext].cppList ~= sentry;
+            else if(entry.name.startsWith("./core/sys/"))
+            {
+                auto components = entry.pathSplitter;
+                components.popFrontN(3);
+                fileMap[ext].sysList[components.front] ~= sentry;
+            }
+            else
+                fileMap[ext].baseList ~= sentry;
+        }
+    }
+
+    foreach(extEntry; fileMap.byKeyValue.array.sort!"a.key < b.key")
+    {
+        auto ext = extEntry.key;
+        auto value = extEntry.value;
+        writeList("DRUNTIME_" ~ ext.toUpper() ~ "SOURCES", value.baseList);
+        writeList("DRUNTIME_" ~ ext.toUpper() ~ "SOURCES_STDCXX", value.cppList);
+        foreach(entry; value.sysList.byKeyValue.array.sort!"a.key < b.key")
+        {
+            writeList("DRUNTIME_" ~ ext.toUpper() ~ "SOURCES_" ~ entry.key.toUpper(), entry.value);
+        }
+    }
+}
+
+void writeList(string name, string[] values, bool force = false)
+{
+    if (!force && values.empty)
+        return;
+
+    values = sort(values).array();
+    writeln();
+    writef("%s =", name);
+    size_t line = name.length + 3;
+    foreach(entry; values)
+    {
+        if(line + entry.length > 70)
+        {
+            line = 0;
+            writeln(` \`);
+            write('\t');
+        }
+        else
+            write(" ");
+        write(entry);
+        line += entry.length + 1;
+    }
+    writeln();
+}

libphobos/scripts/gen_phobos_sources.d

@@ -0,0 +1,116 @@
+#!/usr/bin/env dub
+/++dub.sdl:
+name "gen_phobos_sources"
++/
+// Written in the D programming language.
+import std.stdio;
+import std.file;
+import std.path;
+import std.range;
+import std.string;
+import std.algorithm;
+
+string[] filterList = [
+    "./Makefile.in", "./Makefile.am",
+    "./index.dd",
+    "./libgphobos.spec.in", "./drtstuff.spec",
+    "./LICENSE_1_0.txt", "./MERGE",
+    "./std/experimental/note.md"
+];
+
+struct Files
+{
+    string[] baseList;
+    string[][string] sysList;
+}
+
+void main(string[] args)
+{
+    Files[string] fileMap;
+
+    foreach (entry; "."
+                    .dirEntries(SpanMode.depth)
+                    .filter!(a => !filterList.canFind(a)))
+    {
+        if (entry.isFile)
+        {
+            auto ext = entry.extension.empty ? "" : entry.extension[1 .. $];
+            if (!(ext in fileMap))
+                fileMap[ext] = Files.init;
+
+            string sentry = entry[2 .. $];
+
+            if (entry.name.startsWith("./std/c/"))
+            {
+                if (entry.dirName == "./std/c")
+                {
+                    fileMap[ext].sysList["stdc"] ~= sentry;
+                }
+                else
+                {
+                    auto components = entry.pathSplitter;
+                    components.popFrontN(3);
+                    fileMap[ext].sysList[components.front] ~= sentry;
+                }
+            }
+            else
+                fileMap[ext].baseList ~= sentry;
+        }
+    }
+
+    writeln("if ENABLE_LIBDRUNTIME_ONLY");
+    foreach (extEntry; fileMap.byKeyValue.array.sort!"a.key < b.key")
+    {
+        auto ext = extEntry.key;
+        auto value = extEntry.value;
+        writeList("PHOBOS_" ~ ext.toUpper() ~ "SOURCES", [],
+                  !value.baseList.empty);
+        foreach (entry; value.sysList.byKeyValue.array.sort!"a.key < b.key")
+        {
+            string name = "PHOBOS_" ~ ext.toUpper() ~ "SOURCES_"
+                ~ entry.key.toUpper();
+            writeList(name, [], !entry.value.empty);
+        }
+    }
+    writeln();
+    writeln("else");
+    foreach (extEntry; fileMap.byKeyValue.array.sort!"a.key < b.key")
+    {
+        auto ext = extEntry.key;
+        auto value = extEntry.value;
+        writeList("PHOBOS_" ~ ext.toUpper() ~ "SOURCES", value.baseList);
+        foreach (entry; value.sysList.byKeyValue.array.sort!"a.key < b.key")
+        {
+            string name = "PHOBOS_" ~ ext.toUpper() ~ "SOURCES_"
+                ~ entry.key.toUpper();
+            writeList(name, entry.value);
+        }
+    }
+    writeln();
+    writeln("endif");
+}
+
+void writeList(string name, string[] values, bool force = false)
+{
+    if (!force && values.empty)
+        return;
+
+    values = sort(values).array();
+    writeln();
+    writef("%s =", name);
+    size_t line = name.length + 3;
+    foreach (entry; values)
+    {
+        if (line + entry.length > 70)
+        {
+            line = 0;
+            writeln(` \`);
+            write('\t');
+        }
+        else
+            write(" ");
+        write(entry);
+        line += entry.length + 1;
+    }
+    writeln();
+}

libphobos/src/Makefile.am

@@ -78,7 +78,7 @@ install-data-local:
 	done
 
 # Source file definitions. Boring stuff, auto-generated with
-# https://gist.github.com/jpf91/8744acebc9dcf1e9d1a35cdff20afbb2
+# libphobos/scripts/gen_phobos_sources.d
 # Can't use wildcards here:
 # https://www.gnu.org/software/automake/manual/html_node/Wildcards.html
 if ENABLE_LIBDRUNTIME_ONLY

libphobos/src/Makefile.in

@@ -624,7 +624,7 @@ libgphobos_la_LINK = $(LIBTOOL) --tag=D $(libgphobos_la_LIBTOOLFLAGS) \
 
 
 # Source file definitions. Boring stuff, auto-generated with
-# https://gist.github.com/jpf91/8744acebc9dcf1e9d1a35cdff20afbb2
+# libphobos/scripts/gen_phobos_sources.d
 # Can't use wildcards here:
 # https://www.gnu.org/software/automake/manual/html_node/Wildcards.html
 @ENABLE_LIBDRUNTIME_ONLY_TRUE@PHOBOS_DSOURCES =