1 files changed, 122 insertions, 0 deletions
diff --git a/core/bop.c b/core/bop.c
new file mode 100644
index 0000000..02c0324
--- /dev/null
+++ b/core/bop.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2026, Chloe M., et al.
+ * Provided under the BSD-3 clause.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include "bop/common.h"
+#include "bop/hook.h"
+#include "bop/build.h"
+
+static void
+version(void)
+{
+    printf("Version: %s\n", BOP_VERSION);
+}
+
+static void
+help(void)
+{
+    printf("usage: %s=<dir> ./bop [flags] [build_op]\n", BOP_BUILD_ENV);
+    printf("-- flags --\n");
+    printf("[-h]    Display this help menu\n");
+    printf("[-v]    Display the version\n");
+    printf("-- build operations\n");
+    printf("[build]     Build the directory specified by %s\n", BOP_BUILD_ENV);
+}
+
+/*
+ * Discover any possible hooks to be ran in the desired build directory and
+ * begin the build process.
+ */
+static int
+run_build(void)
+{
+    char pathbuf[256];
+    char *build_dir;
+    int error;
+
+    build_dir = getenv(BOP_BUILD_ENV);
+    if (build_dir == NULL) {
+        printf("fatal: build directory not specified in %s\n", BOP_BUILD_ENV);
+        return -1;
+    }
+    
+    /*
+     * There is a pre-build hook to be located within the [BUILD_DIR]/.bop/prehook.sh which
+     * is simply a shell script to be executed.
+     */ 
+    snprintf(pathbuf, sizeof(pathbuf), "%s/.bop/prehook.sh", build_dir);
+    if (access(pathbuf, F_OK) == 0) {
+        bop_shell_hook(pathbuf);
+    }
+
+    error = bop_build_dir(build_dir);
+    if (error < 0) {
+        printf("fatal: failed to build '%s'\n", build_dir);
+        return error;
+    }
+    
+    /* Run the post hook if we can */
+    snprintf(pathbuf, sizeof(pathbuf), "%s/.bop/posthook.sh", build_dir);
+    if (access(pathbuf, F_OK) == 0) {
+        bop_shell_hook(pathbuf);
+    }
+
+    return 0;
+}
+
+static int
+do_build_op(const char *op)
+{
+    if (op == NULL) {
+        return -1;
+    }
+
+    switch (*op) {
+    case 'b':
+        if (strcmp(op, "build") == 0) {
+            return run_build();
+        }
+
+        break;
+    }
+    
+    return -1;
+}
+
+int
+main(int argc, char **argv)
+{
+    int opt;
+    char *build_opt;
+
+    if (argc < 2) {
+        printf("fatal: too few arguments\n");
+        help();
+        return -1;
+    }
+
+    while ((opt = getopt(argc, argv, "hv")) != -1) {
+        switch (opt) {
+        case 'h':
+            help();
+            return -1;
+        case 'v':
+            version();
+            return -1;
+        }
+    }
+
+    if (optind >= argc) {
+        printf("fatal: please specify a build operation\n");
+        help();
+        return -1;
+    }
+
+    build_opt = argv[optind++];
+    return do_build_op(build_opt);
+}