/*
- * 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;
}