Added espfs.c testbed code

espfstest/Makefile

@@ -0,0 +1,10 @@
+CFLAGS=-I../lib/heatshrink -I../user -I../include -std=gnu99 
+
+espfs.o: espfs.c ../user/espfs.c
+
+espfstest: main.o espfs.o heatshrink_decoder.o
+	$(CC) -o $@ $^
+
+
+clean:
+	rm -f *.o espfstest

espfstest/espfs.c

@@ -0,0 +1,3 @@
+
+#include <stdint.h>
+#include "../user/espfs.c"

espfstest/heatshrink_decoder.c

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+#include "httpdconfig.h"
+#ifdef EFS_HEATSHRINK
+//Stupid wrapper so we don't have to move c-files around
+//Also loads httpd-specific config.
+
+#include "../lib/heatshrink/heatshrink_decoder.c"
+
+#endif

espfstest/main.c

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+/*
+Simple and stupid file decompressor for an espfs image. Mostly used as a testbed for espfs.c and 
+the decompressors: code compiled natively is way easier to debug using gdb et all :)
+*/
+#include <stdio.h>
+#include <stdint.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+#include "espfs.h"
+
+char *espFsData;
+
+int main(int argc, char **argv) {
+	int f, out;
+	int len;
+	char buff[128];
+	EspFsFile *ef;
+	off_t size;
+
+	if (argc!=3) {
+		printf("Usage: %s espfs-image file\nExpands file from the espfs-image archive.\n", argv[0]);
+		exit(0);
+	}
+
+	f=open(argv[1], O_RDONLY);
+	if (f<=0) {
+		perror(argv[1]);
+		exit(1);
+	}
+	size=lseek(f, 0, SEEK_END);
+	espFsData=mmap(NULL, size, PROT_READ, MAP_SHARED, f, 0);
+	if (espFsData==MAP_FAILED) {
+		perror("mmap");
+		exit(1);
+	}
+
+	ef=espFsOpen(argv[2]);
+	if (ef==NULL) {
+		printf("Couldn't find %s in image.\n", argv[2]);
+		exit(1);
+	}
+
+	out=open(argv[2], O_WRONLY|O_CREAT|O_TRUNC, 0644);
+	if (out<=0) {
+		perror(argv[2]);
+		exit(1);
+	}
+	
+	while ((len=espFsRead(ef, buff, 128))!=0) {
+		write(out, buff, len);
+	}
+	espFsClose(ef);
+	//munmap, close, ... I can't be bothered.
+}