From 5811bf4d79f23864c99a96a4320c5d135cd7aebf Mon Sep 17 00:00:00 2001
From: nishi <nishi@0f02c867-ac3d-714e-8a88-971ba1f6efcf>
Date: Tue, 23 Apr 2024 02:55:26 +0000
Subject: [PATCH] configgen works

git-svn-id: file:///raid/svn-main/nishi-serenade/trunk@8 0f02c867-ac3d-714e-8a88-971ba1f6efcf
---
 Makefile         |  6 +++++-
 Tool/configgen.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 59 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 3f0f096..3c117fe 100644
--- a/Makefile
+++ b/Makefile
@@ -10,17 +10,21 @@ SUFFIX =
 
 .PHONY: all ./Serenade ./Tool replace
 
-all: ./Tool ./Serenade
+all: ./Tool ./config.h ./Serenade
 
 ./Tool::
 	$(MAKE) -C ./Tool CC="$(CC)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" LIBS="$(LIBS)" SUFFIX="$(SUFFIX)"
 
+./config.h:
+	./Tool/configgen $@
+
 ./Serenade::
 	$(MAKE) -C ./Serenade CC="$(CC)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" LIBS="$(LIBS)" SUFFIX="$(SUFFIX)"
 
 clean:
 	$(MAKE) -C ./Tool clean
 	$(MAKE) -C ./Serenade clean
+	rm -f config.h
 
 FILES = `find . -name "*.c" -or -name "*.h"`
 
diff --git a/Tool/configgen.c b/Tool/configgen.c
index 0d84d51..c39df45 100644
--- a/Tool/configgen.c
+++ b/Tool/configgen.c
@@ -29,5 +29,58 @@
 /* --- END LICENSE --- */
 
 #include <stdio.h>
+#include <stdbool.h>
+#include <ctype.h>
 
-int main(){}
+const char* asks[] = {
+	"y",
+	"HAS_REPL_SUPPORT",
+	"Do you want the REPL support?",
+	"n",
+	"HAS_FFI_SUPPORT",
+	"Do you want the FFI support?",
+	NULL
+};
+
+void show_dialog(int n){
+	fprintf(stderr, "[default is %c] %s ", asks[n * 3][0], asks[n * 3 + 2]);
+	fflush(stderr);
+}
+
+int main(int argc, char** argv){
+	FILE* out = stdout;
+	bool load = false;
+	if(argv[1] != NULL){
+		out = fopen(argv[1], "w");
+		if(out != NULL){
+			load = true;
+		}else{
+			fprintf(stderr, "%s: %s: couldn't open the file\n", argv[0], argv[1]);
+			return 1;
+		}
+	}
+	fprintf(out, "/* Autogenerated config */\n");
+	char c;
+	char oldc;
+	bool nl = false;
+	int n = 0;
+	show_dialog(n);
+	while(true){
+		oldc = c;
+		if(fread(&c, 1, 1, stdin) <= 0) break;
+		if(c == '\n'){
+			char ch = asks[n * 3][0];
+			if(nl){
+				ch = tolower(oldc);
+			}
+			fprintf(out, "#%s %s\n", ch == 'y' ? "define" : "undef", asks[n * 3 + 1]);
+			n++;
+			nl = false;
+			if(asks[n * 3] == NULL) break;
+			show_dialog(n);
+		}else{
+			nl = true;
+		}
+	}
+	if(load) fclose(out);
+}
-- 
2.43.0