chore: implement vectors

also seems to address several of these:
https://github.com/javalsai/lidm/issues/3#issuecomment-2423933131

not sure about the issue itself, might be permission stuff

include/sessions.h

@@ -3,6 +3,8 @@
 
 #include <sys/types.h>
 
+#include <util.h>
+
 enum session_type {
   XORG,
   WAYLAND,
@@ -16,11 +18,6 @@ struct session {
   enum session_type type;
 };
 
-struct sessions_list {
-  u_int16_t length;
-  struct session *sessions;
-};
-
-struct sessions_list *get_avaliable_sessions();
+struct Vector get_avaliable_sessions();
 
 #endif

include/ui.h

@@ -2,9 +2,10 @@
 #define _UIH_
 
 #include <config.h>
+#include <util.h>
 
 void setup(struct config);
-int load(struct users_list *, struct sessions_list *);
+int load(struct Vector * users, struct Vector * sessions);
 void print_err(const char *);
 void print_errno(const char *);
 

include/users.h

@@ -3,17 +3,14 @@
 
 #include <sys/types.h>
 
+#include <util.h>
+
 struct user {
   char *shell;
   char *username;
   char *display_name;
 };
 
-struct users_list {
-  u_int16_t length;
-  struct user *users;
-};
-
-struct users_list *get_human_users();
+struct Vector get_human_users();
 
 #endif

src/main.c

@@ -9,6 +9,7 @@
 #include <sessions.h>
 #include <ui.h>
 #include <users.h>
+#include <util.h>
 
 int main(int argc, char *argv[]) {
   if (argc == 2)
@@ -23,10 +24,10 @@ int main(int argc, char *argv[]) {
   }
   setup(*config);
 
-  struct users_list *users = get_human_users();
-  struct sessions_list *sessions = get_avaliable_sessions();
+  struct Vector users = get_human_users();
+  struct Vector sessions = get_avaliable_sessions();
 
-  int ret = load(users, sessions);
+  int ret = load(&users, &sessions);
   if (ret == 0)
     execl(argv[0], argv[0], NULL);
 }

src/sessions.c

@@ -18,7 +18,6 @@ static const struct source_dir sources[] = {
     {XORG, "/usr/share/xsessions"},
     {WAYLAND, "/usr/share/wayland-sessions"},
 };
-static const size_t sources_size = sizeof(sources) / sizeof(sources[0]);
 
 static struct session __new_session(enum session_type type, char *name,
                                     const char *exec, const char *tryexec) {
@@ -31,24 +30,12 @@ static struct session __new_session(enum session_type type, char *name,
   return __session;
 }
 
-static const u_int8_t bs = 16;
-static const u_int8_t unit_size = sizeof(struct session);
-
-static u_int16_t alloc_size = bs;
-static u_int16_t used_size = 0;
-
-static struct session *sessions = NULL;
-static struct sessions_list *__sessions_list = NULL;
+static struct Vector *cb_sessions = NULL;
 
 // NOTE: commented printf's here would be nice to have debug logs if I ever
 // implement it
 static enum session_type session_type;
 static int fn(const char *fpath, const struct stat *sb, int typeflag) {
-  // practically impossible to reach this
-  // but will prevent break
-  if (used_size == 0xffff)
-    return 0;
-
   if (sb == NULL || !S_ISREG(sb->st_mode))
     return 0;
 
@@ -56,7 +43,7 @@ static int fn(const char *fpath, const struct stat *sb, int typeflag) {
   FILE *fd = fopen(fpath, "r");
   if (fd == NULL) {
     perror("fopen");
-    fprintf(stderr, "error opening file (r) %s\n", fpath);
+    fprintf(stderr, "error opening file (r) '%s'\n", fpath);
     return 0;
   }
 
@@ -66,8 +53,8 @@ static int fn(const char *fpath, const struct stat *sb, int typeflag) {
   char *name_buf = NULL;
   char *exec_buf = NULL;
   char *tryexec_buf = NULL;
+  // This should be made a specific function
   while (true) {
-    /*printf(".");*/
     char *buf = malloc(sb->st_blksize);
     ssize_t read_size = getline(&buf, &alloc_size, fd);
     if (read_size == -1) {
@@ -102,17 +89,10 @@ static int fn(const char *fpath, const struct stat *sb, int typeflag) {
 
   // just add this to the list
   if (name_buf != NULL && exec_buf != NULL) {
-    /*printf("gonna add to session list\n");*/
-    if (used_size >= alloc_size) {
-      alloc_size += bs;
-      sessions = realloc(sessions, alloc_size * unit_size);
-    }
-
-    /*printf("n %s\ne %s\nte %s\n", name_buf, exec_buf, tryexec_buf);*/
-    sessions[used_size] = __new_session(session_type, name_buf, exec_buf,
-                                        tryexec_buf == NULL ? "" : tryexec_buf);
-
-    used_size++;
+    struct session *session_i = malloc(sizeof (struct session));
+    *session_i = __new_session(session_type, name_buf, exec_buf,
+                               tryexec_buf == NULL ? "" : tryexec_buf);
+    vec_push(cb_sessions, session_i);
   }
 
   if (name_buf != NULL)
@@ -125,23 +105,17 @@ static int fn(const char *fpath, const struct stat *sb, int typeflag) {
   return 0;
 }
 
-static struct sessions_list __list;
 // This code is designed to be run purely single threaded
-struct sessions_list *get_avaliable_sessions() {
-  if (sessions != NULL)
-    return __sessions_list;
-  else
-    sessions = malloc(alloc_size * unit_size);
+struct Vector get_avaliable_sessions() {
+  struct Vector sessions = vec_new();
 
-  for (uint i = 0; i < sources_size; i++) {
-    session_type = sources[i].type;
+  cb_sessions = &sessions;
+  for (uint i = 0; i < (sizeof(sources) / sizeof(sources[0])); i++) {
     /*printf("recurring into %s\n", sources[i].dir);*/
+    session_type = sources[i].type;
     ftw(sources[i].dir, &fn, 1);
   }
+  cb_sessions = NULL;
 
-  sessions = realloc(sessions, used_size * unit_size);
-
-  __list.length = used_size;
-  __list.sessions = sessions;
-  return __sessions_list = &__list;
+  return sessions;
 }

src/ui.c

@@ -179,8 +179,8 @@ struct opt_field of_session;
 struct opt_field of_user;
 struct opt_field of_passwd;
 
-struct users_list *gusers;
-struct sessions_list *gsessions;
+struct Vector *gusers;
+struct Vector *gsessions;
 
 // not *that* OF tho
 struct opt_field *get_of(enum input from) {
@@ -217,7 +217,7 @@ void ffield_cursor_focus() {
 
 struct user get_current_user() {
   if (of_user.current_opt != 0)
-    return gusers->users[of_user.current_opt - 1];
+    return *(struct user*)vec_get(gusers, of_user.current_opt - 1);
   else {
     struct user custom_user;
     custom_user.shell = "/usr/bin/bash";
@@ -237,7 +237,7 @@ struct session get_current_session() {
       shell_session.exec = shell_session.name = get_current_user().shell;
       return shell_session;
     } else
-      return gsessions->sessions[of_session.current_opt - 1];
+      return *(struct session*)vec_get(gsessions, of_session.current_opt - 1);
   } else {
     struct session custom_session;
     custom_session.type = SHELL;
@@ -320,7 +320,7 @@ void ffield_type(char *text) {
   print_ffield();
 }
 
-int load(struct users_list *users, struct sessions_list *sessions) {
+int load(struct Vector *users, struct Vector *sessions) {
   /// SETUP
   gusers = users;
   gsessions = sessions;

src/users.c

@@ -20,43 +20,19 @@ static struct user __new_user(struct passwd *p) {
   return __user;
 }
 
-static const u_int8_t bs = 16;
-static const u_int8_t unit_size = sizeof(struct user);
-
-static u_int16_t alloc_size = bs;
-static u_int16_t used_size = 0;
-
-static struct user *users = NULL;
-static struct users_list *__users_list = NULL;
-
-struct users_list __list;
 // This code is designed to be run purely single threaded
-struct users_list *get_human_users() {
-  if (users != NULL)
-    return __users_list;
-  else
-    users = malloc(alloc_size * unit_size);
+struct Vector get_human_users() {
+  struct Vector users = vec_new();
 
   struct passwd *pwd;
   while ((pwd = getpwent()) != NULL) {
-    // practically impossible to reach this (== 0xffff)
-    // but will prevent break
-    if (used_size == 0xffff ||
-        !(pwd->pw_dir && strncmp(pwd->pw_dir, "/home/", 6) == 0))
+    if (!(pwd->pw_dir && strncmp(pwd->pw_dir, "/home/", 6) == 0))
       continue;
 
-    if (used_size >= alloc_size) {
-      alloc_size += bs;
-      users = realloc(users, alloc_size * unit_size);
-    }
-
-    users[used_size] = __new_user(pwd);
-    used_size++;
+    struct user *user_i = malloc(sizeof(struct user));
+    *user_i = __new_user(pwd);
+    vec_push(&users, user_i);
   }
 
-  users = realloc(users, used_size * unit_size);
-
-  __list.length = used_size;
-  __list.users = users;
-  return __users_list = &__list;
+  return users;
 }