M libthingplugins/include/plugins.h → libthingplugins/include/plugins.h

@@ -1,1 +1,1 @@
-int readplugins(void);
+int readplugins(char **plugins);

M libthingplugins/src/plugins.c → libthingplugins/src/plugins.c

@@ -1,29 +1,44 @@
 #include <dirent.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
-int readplugins(void) {
+int readplugins(char **plugins) {
   struct dirent *de;
 
   DIR *dr = opendir("/usr/share/thing/plugins/");
 
   if (dr == NULL) {
-    printf("Could not open plugin capability directory "
+    perror("Could not open plugin capability directory "
            "(/usr/share/thing/plugins/)");
     return 1;
   }
 
+  int i = 0; // plugin counter
   while ((de = readdir(dr)) != NULL) {
-    // if filename shorter than  x.toml -> 6
-    if (sizeof(de->d_name) / sizeof(de->d_name[0]) - 1 < 6)
+    // find actual name end, as d_name is fixed length 256 bytes
+    char *nend = strchr(de->d_name, '\0');
+    if (nend - de->d_name < 7)
+      continue;
+
+    // only match toml files
+    char ext[6];
+    strncpy(ext, nend - 5, 6);
+    if ((strcmp(ext, ".toml")))
       continue;
 
-    // if it ends with toml
-    char *ext = strrchr(de->d_name, '.');
-    if (!(strcmp(ext, ".toml")))
-      printf("%s\n", de->d_name);
+    // retrieve only plugin name from filename
+    // add it to plugins[]
+    int nlen = nend - de->d_name - 5;
+    plugins[i] = malloc(nlen);
+    strncpy(plugins[i], de->d_name, nlen);
+    i++;
   }
-
   closedir(dr);
+
+  // add end signal
+  if (i < 256)
+    plugins[i] = "";
+
   return 0;
 }

M thing/src/thing.c → thing/src/thing.c

@@ -3,12 +3,27 @@ #include <libthingterm/menu.h>
 #include <libthingterm/term.h>
 
 #include <stdio.h>
+#include <string.h>
 #include <termios.h>
 
 int main(void) {
   uint8_t ret = 0;
   struct termios old_term;
-  readplugins();
+
+  // scan for plugins
+  char *plugins[256]; // hardcoded limit of 255 for plugins
+  if (readplugins(plugins))
+    return 1;
+  int i;
+  printf("found plugins:\n");
+  for (i = 0; i < 256; i++) {
+    if (!strcmp(plugins[i], ""))
+      goto plugins_done;
+    printf("  %s\n", plugins[i]);
+  }
+plugins_done:
+
+  // setup term
   setup_term(&old_term);
 
   static char *elements[] = {"hi", "hello", "what's up", "dang",