Core: Add get_version() call

* Also some formatting/typo improvements

examples/xusb.c

@@ -758,9 +758,7 @@ int main(int argc, char** argv)
 {
 	bool show_help = false;
 	bool debug_mode = false;
-#ifdef HAS_GETVERSION
 	const struct libusb_version* version;
-#endif
 	int j, r;
 	size_t i, arglen;
 	unsigned tmp_vid, tmp_pid;
@@ -859,10 +857,8 @@ int main(int argc, char** argv)
 		return 0;
 	}
 
-#ifdef HAS_GETVERSION
-	version = libusb_getversion(); */
+	version = libusb_get_version();
 	printf("Using libusbx v%d.%d.%d.%d\n\n", version->major, version->minor, version->micro, version->nano);
-#endif
 	r = libusb_init(NULL);
 	if (r < 0)
 		return r;

libusb/core.c

@@ -42,6 +42,8 @@ const struct usbi_os_backend * const usbi_backend = &windows_backend;
 #endif
 
 struct libusb_context *usbi_default_context = NULL;
+const struct libusb_version libusb_version_internal =
+	{ LIBUSB_MAJOR, LIBUSB_MINOR, LIBUSB_MICRO, LIBUSB_NANO};
 static int default_context_refcnt = 0;
 static usbi_mutex_static_t default_context_lock = USBI_MUTEX_INITIALIZER;
 
@@ -577,7 +579,7 @@ struct libusb_device *usbi_get_device_by_session_id(struct libusb_context *ctx,
  * \param ctx the context to operate on, or NULL for the default context
  * \param list output location for a list of devices. Must be later freed with
  * libusb_free_device_list().
- * \returns The number of devices in the outputted list, or any
+ * \returns the number of devices in the outputted list, or any
  * \ref libusb_error according to errors encountered by the backend.
  */
 ssize_t API_EXPORTED libusb_get_device_list(libusb_context *ctx,
@@ -1760,3 +1762,13 @@ DEFAULT_VISIBILITY const char * LIBUSB_CALL libusb_error_name(int error_code)
 	}
 	return "**UNKNOWN**";
 }
+
+/** \ingroup misc
+ * Fills a libusb_version struct with the full version (major, minor,
+ * micro, nano) of this library
+ */
+DEFAULT_VISIBILITY
+const struct libusb_version * LIBUSB_CALL libusb_get_version(void)
+{
+	return &libusb_version_internal;
+}

libusb/libusb-1.0.def

@@ -62,6 +62,8 @@ EXPORTS
   libusb_get_pollfds@4 = libusb_get_pollfds
   libusb_get_string_descriptor_ascii
   libusb_get_string_descriptor_ascii@16 = libusb_get_string_descriptor_ascii
+  libusb_get_version
+  libusb_get_version@0 = libusb_get_version
   libusb_handle_events
   libusb_handle_events@4 = libusb_handle_events
   libusb_handle_events_completed

libusb/libusb-1.0.rc

@@ -12,9 +12,13 @@
 #define LU_STR(s) #s
 #define LU_XSTR(s) LU_STR(s)
 #if LIBUSB_NANO > 0
-#define LIBUSB_VERSIONSTRING LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." LU_XSTR(LIBUSB_MICRO) "." LU_XSTR(LIBUSB_NANO) LIBUSB_RC "\0"
+#define LIBUSB_VERSIONSTRING \
+	LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." \
+	LU_XSTR(LIBUSB_MICRO) "." LU_XSTR(LIBUSB_NANO) LIBUSB_RC "\0"
 #else
-#define LIBUSB_VERSIONSTRING LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." LU_XSTR(LIBUSB_MICRO) LIBUSB_RC "\0"
+#define LIBUSB_VERSIONSTRING \
+	LU_XSTR(LIBUSB_MAJOR) "." LU_XSTR(LIBUSB_MINOR) "." \
+	LU_XSTR(LIBUSB_MICRO) LIBUSB_RC "\0"
 #endif
 #endif
 
@@ -35,7 +39,6 @@ BEGIN
 	BEGIN
 		BLOCK "040904b0"
 		BEGIN
-			VALUE "Comments", "\0"
 			VALUE "CompanyName", "libusbx.org\0"
 			VALUE "FileDescription", "C library for writing portable USB drivers in userspace\0"
 			VALUE "FileVersion", LIBUSB_VERSIONSTRING

libusb/libusb.h

@@ -638,6 +638,16 @@ struct libusb_context;
 struct libusb_device;
 struct libusb_device_handle;
 
+/** \ingroup lib
+ * Structure providing the version of libusbx currently in use
+ */
+struct libusb_version {
+	uint16_t major;
+	uint16_t minor;
+	uint16_t micro;
+	uint16_t nano;
+};
+
 /** \ingroup lib
  * Structure representing a libusbx session. The concept of individual libusbx
  * sessions allows for your program to use two libraries (or dynamically
@@ -929,6 +939,7 @@ enum libusb_capability {
 int LIBUSB_CALL libusb_init(libusb_context **ctx);
 void LIBUSB_CALL libusb_exit(libusb_context *ctx);
 void LIBUSB_CALL libusb_set_debug(libusb_context *ctx, int level);
+const struct libusb_version * LIBUSB_CALL libusb_get_version(void);
 int LIBUSB_CALL libusb_has_capability(uint32_t capability);
 const char * LIBUSB_CALL libusb_error_name(int errcode);
 

libusb/libusbi.h

@@ -32,6 +32,7 @@
 #endif
 
 #include <libusb.h>
+#include "version.h"
 
 /* Inside the libusbx code, mark all public functions as follows:
  *   return_type API_EXPORTED function_name(params) { ... }