X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=examples%2Fapplywim.c;h=824752b0e349b566e3df6bbaca407ee25f742056;hp=6d34a432f57578c896e69e3307c0939fe9f30ba6;hb=4dd45340f9fe3a533e0f1a9d6b79f8118e45ca2a;hpb=799b86d9a6db3b581caa895fc786f6a38286fa0f

diff --git a/examples/applywim.c b/examples/applywim.c
index 6d34a432..824752b0 100644
--- a/examples/applywim.c
+++ b/examples/applywim.c
@@ -1,41 +1,76 @@
 /*
- * applywim.c - A simple program to extract all images from a WIM file to a
- * directory.
+ * applywim.c - A program to extract the first image from a WIM file.
+ *
+ * The author dedicates this file to the public domain.
+ * You can do whatever you want with this file.
  */
 
 #include <wimlib.h>
 #include <stdio.h>
 
+#define TO_PERCENT(numerator, denominator) \
+	((float)(((denominator) == 0) ? 0 : ((numerator) * 100 / (float)(denominator))))
+
+static enum wimlib_progress_status
+extract_progress(enum wimlib_progress_msg msg,
+		 union wimlib_progress_info *info, void *progctx)
+{
+	switch (msg) {
+	case WIMLIB_PROGRESS_MSG_EXTRACT_STREAMS:
+		printf("Extracting files: %.2f%% complete\n",
+		       TO_PERCENT(info->extract.completed_bytes,
+				  info->extract.total_bytes));
+		break;
+	default:
+		break;
+	}
+	return WIMLIB_PROGRESS_STATUS_CONTINUE;
+}
+
 int main(int argc, char **argv)
 {
 	int ret;
-	WIMStruct *wim;
+	WIMStruct *wim = NULL;
+	const char *wimpath;
+	const char *destdir;
 
+	/* Check for the correct number of arguments.  */
 	if (argc != 3) {
 		fprintf(stderr, "Usage: applywim WIM DIR\n");
-		ret = 2;
-		goto out;
+		return 2;
 	}
 
-	/* Initialize the library. */
-	ret = wimlib_global_init(0);
-	if (ret)
+	wimpath = argv[1];
+	destdir = argv[2];
+
+	/* Open the WIM file as a WIMStruct.  */
+	ret = wimlib_open_wim(wimpath,  /* Path of WIM file to open  */
+			      0,        /* WIMLIB_OPEN_FLAG_* flags (0 means all defaults)  */
+			      &wim);    /* Return the WIMStruct pointer in this location  */
+	if (ret != 0) /* Always should check the error codes.  */
 		goto out;
 
-	/* Open the WIM file. */
-	ret = wimlib_open_wim(argv[1], 0, &wim, NULL);
-	if (ret)
-		goto out_wimlib_global_cleanup;
+	/* Register our progress function.  */
+	wimlib_register_progress_function(wim, extract_progress, NULL);
 
-	/* Extract all the images. */
-	ret = wimlib_extract_image(wim, WIMLIB_ALL_IMAGES, argv[2], 0, NULL);
+	/* Extract the first image.  */
+	ret = wimlib_extract_image(wim,     /* WIMStruct from which to extract the image  */
+				   1,       /* Image to extract  */
+				   destdir, /* Directory to extract the image to  */
+				   0);      /* WIMLIB_EXTRACT_FLAG_* flags (0 means all defaults)  */
 
-	/* Free the WIM file */
+out:
+	/* Free the WIMStruct.  Has no effect if the pointer to it is NULL.  */
 	wimlib_free(wim);
 
-out_wimlib_global_cleanup:
-	/* Finalize the library */
+	/* Check for error status.  */
+	if (ret != 0) {
+		fprintf(stderr, "wimlib error %d: %s\n",
+			ret, wimlib_get_error_string(ret));
+	}
+
+	/* Free global memory (optional).  */
 	wimlib_global_cleanup();
-out:
+
 	return ret;
 }