implement device probe in C

It's an attempt to build auto-completion for the dive-computers
based on unpublished code inside libdivecomputer[1]

[1] -
http://git.libdivecomputer.org/?p=libdivecomputer.git;a=commitdiff;h=d44053a99435fb9fc1f408fb3f1629a54c938afc

Signed-off-by: Danilo Cesar Lemes de Paula <danilo.eu@gmail.com>

1 files changed, 42 insertions, 2 deletions

diff --git a/macos.c b/macos.c
index 75c86edf2..f5f883e5c 100644
--- a/macos.c
+++ b/macos.c
@@ -106,8 +106,8 @@ int subsurface_fill_device_list(GtkListStore *store)
 
 	dev = g_dir_open("/dev", 0, NULL);
 	while (dev && (name = g_dir_read_name(dev)) != NULL) {
-		if (strstr(name, "usbserial") ||
-		    (strstr(name, "SerialPort") && strstr(name, "cu"))) {
+	    if (strstr(name, "usbserial") ||
+			(strstr(name, "SerialPort") && strstr(name, "cu"))) {
 			int len = strlen(name) + 6;
 			char *devicename = malloc(len);
 			snprintf(devicename, len, "/dev/%s", name);
@@ -263,3 +263,43 @@ gboolean subsurface_launch_for_uri(const char* uri)
 		return FALSE;
 	return TRUE;
 }
+
+int enumerate_devices (device_callback_t callback, void *userdata)
+{
+	int index = -1;
+	DIR *dp = NULL;
+	struct dirent *ep = NULL;
+	size_t i;
+	const char *dirname = "/dev";
+	const char *patterns[] = {
+		"tty.*",
+		"usbserial",
+		NULL
+	};
+
+	dp = opendir (dirname);
+	if (dp == NULL) {
+		return -1;
+	}
+
+	while ((ep = readdir (dp)) != NULL) {
+		for (i = 0; patterns[i] != NULL; ++i) {
+			if (fnmatch (patterns[i], ep->d_name, 0) == 0) {
+				char filename[1024];
+				int n = snprintf (filename, sizeof (filename), "%s/%s", d	irname, ep->d_name);
+				if (n >= sizeof (filename)) {
+					closedir (dp);
+					return -1;
+				}
+				callback (filename, userdata);
+				if (is_default_dive_computer_device(filename))
+					index = i;
+				break;
+			}
+		}
+	}
+	// TODO: list UEMIS mount point from /proc/mounts
+
+	closedir (dp);
+	return index;
+}