Create xxd clone for build time gst scripts.

.gitignore

@@ -3,7 +3,10 @@
 gst
 
 # Generated files
-*.genh
+*.gen.h
+
+# Tools
+xxd
 
 # Tags
 tags

Makefile

@@ -8,18 +8,32 @@ PREFIX?=/usr/local
 BINDIR=$(PREFIX)/bin
 VERSION=\"0.0.0-beta\"
 
-CFLAGS=-std=c99 -Wall -Wextra -I./include -g -DGST_VERSION=$(VERSION)
+CFLAGS=-std=c99 -Wall -Wextra -I./include -I./libs -g -DGST_VERSION=$(VERSION)
 PREFIX=/usr/local
 GST_TARGET=gst
-GST_CORELIB=core/libgst.a
+GST_XXD=xxd
+# Use gdb. On mac use lldb
+DEBUGGER=gdb
 GST_INTERNAL_HEADERS=$(addprefix core/, cache.h)
 GST_HEADERS=$(addprefix include/gst/, gst.h)
 
-# Use gdb. On mac use lldb
+#############################
-DEBUGGER=gdb
+##### Generated headers #####
+#############################
+GST_LANG_SOURCES=$(addprefix libs/, bootstrap.gst)
+GST_LANG_HEADERS=$(patsubst %.gst,%.gen.h,$(GST_LANG_SOURCES))
 
 all: $(GST_TARGET)
 
+#######################
+##### Build tools #####
+#######################
+$(GST_XXD): libs/xxd.c
+	$(CC) -o $(GST_XXD) libs/xxd.c
+
+%.gen.h : %.gst $(GST_XXD)
+	./$(GST_XXD) $< $@ $(basename $(notdir $<))
+
 ###################################
 ##### The core vm and runtime #####
 ###################################
@@ -34,11 +48,11 @@ GST_CORE_OBJECTS=$(patsubst %.c,%.o,$(GST_CORE_SOURCES))
 ######################
 GST_CLIENT_SOURCES=client/main.c
 GST_CLIENT_OBJECTS=$(patsubst %.c,%.o,$(GST_CLIENT_SOURCES))
-$(GST_TARGET): $(GST_CLIENT_OBJECTS) $(GST_CORE_OBJECTS)
+$(GST_TARGET): $(GST_CLIENT_OBJECTS) $(GST_CORE_OBJECTS) $(GST_LANG_HEADERS)
 	$(CC) $(CFLAGS) -o $(GST_TARGET) $(GST_CLIENT_OBJECTS) $(GST_CORE_OBJECTS)
 
 # Compile all .c to .o
-%.o : %.c $(GST_HEADERS) $(GST_INTERNAL_HEADERS)
+%.o : %.c $(GST_HEADERS) $(GST_INTERNAL_HEADERS) $(GST_LANG_HEADERS)
 	$(CC) $(CFLAGS) -o $@ -c $<
 
 run: $(GST_TARGET)
@@ -52,10 +66,11 @@ valgrind: $(GST_TARGET)
 
 clean:
 	rm $(GST_TARGET) || true
-	rm $(GST_CORELIB) || true
 	rm $(GST_CORE_OBJECTS) || true
 	rm $(GST_CLIENT_OBJECTS) || true
+	rm $(GST_LANG_HEADERS) || true
 	rm vgcore.* || true
+	rm $(GST_XXD) || true
 
 test: $(GST_TARGET)
 	@ ./$(GST_TARGET) gsttests/basic.gst

libs/xxd.c

@@ -0,0 +1,98 @@
+/*
+* Copyright (c) 2017 Calvin Rose
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to
+* deal in the Software without restriction, including without limitation the
+* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+* sell copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+* IN THE SOFTWARE.
+*/
+
+/* Simple clone of the xxd tool used at build time. Used to
+ * create headers out of source files. Only used for core libraries
+ * like the bootstrapping code and the stl. */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#define BUFSIZE 1024
+#define PERLINE 16
+
+int main(int argc, const char **argv) {
+
+	static const char hex[] = "0123456789ABCDEF";
+	char buf[BUFSIZE];
+	size_t bytesRead = 0;
+	int lineIndex = 0;
+	int line = 0;
+
+	if (argc != 4) {
+		fprintf(stderr, "Usage: %s infile outfile symbol\n", argv[0]);
+		return 1;
+	}
+
+	/* Open the files */
+	FILE *in = fopen(argv[1], "rb");
+	FILE *out = fopen(argv[2], "wb");
+
+	/* Check if files open successfully */
+	if (in == NULL) {
+		fprintf(stderr, "Could not open input file %s\n", argv[1]);
+		return 1;
+	} else if (out == NULL) {
+		fprintf(stderr, "Could not open output file %s\n", argv[2]);
+		return 1;
+	}
+
+	/* Write the header */
+	fprintf(out, "/* Auto generated - DO NOT EDIT */\n\n");
+	fprintf(out, "#include <stdint.h>\n\n");
+	fprintf(out, "const uint8_t gst_gen_%s[] = {", argv[3]);
+
+	/* Read in chunks from buffer */
+	while ((bytesRead = fread(buf, 1, sizeof(buf), in)) > 0) {
+		int i;
+		for (i = 0; i < bytesRead; ++i) {
+			int byte = ((uint8_t *)buf) [i];
+
+			/* Write the byte */
+			if (lineIndex++ == 0) {
+				if (line++)
+					fputc(',', out);
+				fputs("\n\t", out);
+			} else {
+				fputs(", ", out);
+			}
+			fputs("0x", out);
+			fputc(hex[byte & 0xF], out);
+			fputc(hex[byte >> 4], out);
+
+			/* Make line index wrap */
+			if (lineIndex >= PERLINE)
+				lineIndex = 0;
+
+		}
+  	}
+
+  	/* Write the tail */
+	fputs("\n};\n", out);
+
+	/* Close the file handles */
+	fclose(in);
+	fclose(out);
+
+	return 0;
+}