From 898851a391ba076ddfef94113f222274f89f74c8 Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers3@gmail.com>
Date: Sat, 24 Nov 2012 13:10:30 -0600
Subject: [PATCH 1/1] Add wimapply.c (not compiled by default)

---
 Makefile.am         |  1 +
 programs/wimapply.c | 89 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 programs/wimapply.c

diff --git a/Makefile.am b/Makefile.am
index 60c3af3c..da603f21 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -103,6 +103,7 @@ EXTRA_DIST =					\
 	debian					\
 	rpm					\
 	programs/install.cmd			\
+	programs/wimapply.c			\
 	tests/common_tests.sh			\
 	tests/tests-common.sh			\
 	tests/security_descriptor_1.base64	\
diff --git a/programs/wimapply.c b/programs/wimapply.c
new file mode 100644
index 00000000..1271d332
--- /dev/null
+++ b/programs/wimapply.c
@@ -0,0 +1,89 @@
+/*
+ * wimapply.c
+ *
+ * This is a "minimal" program to apply an image from a stand-alone WIM file.
+ * It's intended to be statically linked to the WIM library to create a small
+ * executable containing only the functions needed to apply a WIM file.
+ *
+ * This is not installed by default since the 'apply' subcommand of 'imagex'
+ * covers all this functionality and more.
+ *
+ * Compile with something like:
+ * 	$ cd wimlib-1.2.0
+ * 	$ ./configure --without-fuse --disable-error-messages \
+ * 	  --disable-assertions --disable-custom-memory-allocator
+ * 	$ cd programs
+ * 	$ gcc -O2 -fwhole-program -flto -s wimapply.c -o wimapply \
+ * 	  ../src/*.c -I/usr/include/libxml2 -I.. -D_FILE_OFFSET_BITS=64 \
+ * 	  -D_GNU_SOURCE -std=gnu99 -lxml2 -lcrypto -lpthread -lntfs-3g
+ * 	$ stat -c %s wimapply
+ *	48592
+ *
+ * Compare this to:
+ * 	$ stat -c %s /usr/lib/libwim.so.1.0.0
+ * 	196720
+ * 	$ stat -c %s /usr/bin/imagex
+ * 	35384
+ *
+ * Use with:
+ * 	$ wimapply install.wim 5 /dev/sda2
+ */
+
+#include "wimlib.h"
+#include <stdio.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+int main(int argc, char **argv)
+{
+	const char *wimfile;
+	const char *image_num;
+	const char *target;
+	int image;
+	int ret;
+	WIMStruct *w;
+	struct stat stbuf;
+	int extract_flags = WIMLIB_EXTRACT_FLAG_SEQUENTIAL;
+
+	if (argc != 4) {
+		fprintf(stderr, "Usage: wimapply WIMFILE IMAGE_NUM TARGET\n");
+		return 2;
+	}
+
+	wimfile = argv[1];
+	image_num = argv[2];
+	target = argv[3];
+
+	image = atoi(image_num);
+
+	ret = stat(target, &stbuf);
+	if (ret != 0) {
+		fprintf(stderr, "Cannot stat `%s': %s\n",
+			target, strerror(errno));
+		return -1;
+	}
+
+	if (!S_ISDIR(stbuf.st_mode))
+		extract_flags |= WIMLIB_EXTRACT_FLAG_NTFS;
+
+	ret = wimlib_open_wim(wimfile, 0, &w, NULL);
+	if (ret != 0) {
+		fprintf(stderr, "Failed to open `%s'!\n", wimfile);
+		fprintf(stderr, "Error code: %s\n", wimlib_get_error_string(ret));
+		return ret;
+	}
+
+	ret = wimlib_extract_image(w, image, target,
+				   WIMLIB_EXTRACT_FLAG_SEQUENTIAL,
+				   NULL, 0, NULL);
+	if (ret != 0) {
+		fputs("Failed to apply WIM image\n", stderr);
+		fprintf(stderr, "Error code: %s\n", wimlib_get_error_string(ret));
+	}
+
+	/* Not calling wimlib_free() because the process is ending anyway. */
+
+	return ret;
+}
-- 
2.43.0