From d39eee7a5e6f66289f91c0519f92203dd1b7469e Mon Sep 17 00:00:00 2001
From: Riley Beckett <rbeckettvt@gmail.com>
Date: Mon, 20 Oct 2025 17:12:32 -0400
Subject: generate list of executables and cache faster

---
 .gitignore   |  1 +
 Makefile     | 25 ++++++++++++++++---------
 array.h      |  1 +
 swenu-exes.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 swenu-path   | 14 ++++++++++----
 5 files changed, 89 insertions(+), 13 deletions(-)
 create mode 100644 swenu-exes.c

diff --git a/.gitignore b/.gitignore
index 96bdd0c..2c3cd6b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 swenu
+swenu-exes
 
 objs/
 
diff --git a/Makefile b/Makefile
index fcd9772..d5b6a44 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+PREFIX=/usr
 BIN=swenu
 CC=gcc
 OBJDIR=objs
@@ -8,13 +9,13 @@ VPATH=/usr/share/wayland-protocols/staging/cursor-shape/:/usr/share/wayland-prot
 WLPROT=cursor-shape-v1.xml tablet-v2.xml wlr-layer-shell-unstable-v1.xml xdg-shell.xml
 WLC=$(patsubst %.xml,$(OBJDIR)/%.c, $(WLPROT))
 WLH=$(patsubst %.xml,$(OBJDIR)/%.h, $(WLPROT))
-SRC=$(WLC) $(wildcard *.c) $(wildcard glad/*.c)
+SRC=$(WLC) $(filter-out swenu-exes.c , $(wildcard *.c)) $(wildcard glad/*.c)
 OBJ=$(patsubst %.c,$(OBJDIR)/%.o, $(notdir $(SRC)))
 HDEPS=state.h wayland.h config.h
 
-.SILENT: $(OBJ) $(WLC) $(WLH) $(BIN) $(OBJDIR) compile_flags
+.SILENT: $(OBJ) $(WLC) $(WLH) $(BIN) $(OBJDIR) compile_flags swenu-exes $(OBJDIR)/swenu-exes.o
 
-all: $(OBJDIR) $(BIN)
+all: $(OBJDIR) $(BIN) swenu-exes
 
 $(OBJDIR):
 	[ -d $@ ] || mkdir -p $@
@@ -23,6 +24,10 @@ $(BIN): $(OBJ)
 	printf "  LD %s\n" $@
 	$(CC) $(LDFLAGS) $^ -o $@
 
+swenu-exes: $(OBJDIR)/swenu-exes.o
+	printf "  LD %s\n" $@
+	$(CC) $(LDFLAGS) $^ -o $@
+
 $(OBJDIR)/%.o: %.c %.h $(HDEPS)
 	printf "  CC %s\n" $@
 	$(CC) $(CFLAGS) -c $< -o $@
@@ -52,14 +57,16 @@ clean:
 	rm -rf $(BIN) $(OBJDIR)
 
 install: all
-	install -m 755 ./$(BIN) $(PREFIX)/usr/bin
-	install -m 755 ./swenu-run $(PREFIX)/usr/bin
-	install -m 755 ./swenu-path $(PREFIX)/usr/bin
+	install -m 755 ./$(BIN) $(PREFIX)/bin
+	install -m 755 ./swenu-run $(PREFIX)/bin
+	install -m 755 ./swenu-path $(PREFIX)/bin
+	install -m 755 ./swenu-exes $(PREFIX)/bin
 
 uninstall:
-	rm -f $(PREFIX)/usr/bin/$(BIN)
-	rm -f $(PREFIX)/usr/bin/swenu-run
-	rm -f $(PREFIX)/usr/bin/swenu-path
+	rm -f $(PREFIX)/bin/$(BIN)
+	rm -f $(PREFIX)/bin/swenu-run
+	rm -f $(PREFIX)/bin/swenu-path
+	rm -f $(PREFIX)/bin/swenu-exes
 
 run: all
 	./swenu-run.sh
diff --git a/array.h b/array.h
index 3c410e2..4975261 100644
--- a/array.h
+++ b/array.h
@@ -1,6 +1,7 @@
 #ifndef ARRAY_H_
 #define ARRAY_H_
 #include <stdlib.h>
+#include <stdbool.h>
 
 typedef struct {
     size_t size;
diff --git a/swenu-exes.c b/swenu-exes.c
new file mode 100644
index 0000000..07acda9
--- /dev/null
+++ b/swenu-exes.c
@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int main(int argc, char** argv) {
+	char* pathenv = getenv("PATH");
+	if (!pathenv) {
+		fprintf(stderr, "Failed to find PATH enviroment variable\n");
+		return 1;
+	}
+
+	if (argc == 2) {
+		struct stat file;
+		if (stat(argv[1], &file) == -1) {
+			return 0;
+		}
+		char* dir = NULL;
+		for (dir = strtok(pathenv, ":"); (dir = strtok(NULL, ":"));) {
+			struct stat buf;
+			if (stat(dir, &buf) == -1) {
+				fprintf(stderr, "%s: %s\n", strerror(errno), argv[1]);
+				continue;
+			}
+			if (S_ISDIR(buf.st_mode) && buf.st_mtime > file.st_mtime) {
+				return 0;
+			}
+		}
+		return 1;
+	}
+
+	char path[PATH_MAX];
+
+	char* dir = NULL;
+	for (dir = strtok(pathenv, ":"); (dir = strtok(NULL, ":"));) {
+		DIR* dirfd = opendir(dir);
+		if (!dirfd) {
+			fprintf(stderr, "%s: %s\n", strerror(errno), dir);
+			continue;
+		}
+
+		struct dirent* d = NULL;
+		while ((d = readdir(dirfd))) {
+			int r = snprintf(path, sizeof(path), "%s/%s", dir, d->d_name);
+			if (r <= 0 || r >= PATH_MAX) continue;
+			struct stat buf;
+			if (stat(path, &buf) == -1) {
+				fprintf(stderr, "%s: %s\n", strerror(errno), path);
+				continue;
+			}
+			if (S_ISREG(buf.st_mode) && !access(path, X_OK)) {
+				puts(d->d_name);
+			}
+		}
+		closedir(dirfd);
+	}
+	return 0;
+}
diff --git a/swenu-path b/swenu-path
index a720d5c..fb58b5b 100755
--- a/swenu-path
+++ b/swenu-path
@@ -1,6 +1,12 @@
 #!/bin/sh
 
-IFS=:
-for dir in $PATH; do
-	[ -e ${dir} ]  && find ${dir} -executable -printf '%f\n'
-done | sort -u
+cachedir="${XDG_CACHE_HOME:-"$HOME/.cache"}"
+cache="$cachedir/swenu-run"
+
+[ ! -e "$cachedir" ] && mkdir -p "$cachedir"
+
+if swenu-exes "$cache"; then
+	swenu-exes | sort -u | tee $cache
+else
+	cat $cache
+fi
-- 
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