Add pckr_test

src/pckr_test.c

@@ -0,0 +1,111 @@
+#include "aliases.h"
+#include "io.h"
+#include "pak.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define ARRLEN(ARR) (sizeof ARR / sizeof ARR[0])
+
+typedef struct {
+  const char *name;
+  const char *contents;
+} asset_t;
+
+i32 main(i32 argc, char *argv[]) {
+  FILE *fp = fopen("assets.pak", "rb");
+  if (!fp) {
+    printf("Failed to open file\n");
+
+    return EXIT_FAILURE;
+  }
+
+  asset_t assets[] = {
+      (asset_t){.name = "file01", .contents = "Hello\n"},
+      (asset_t){.name = "NAME", .contents = "Abdelrahman\n"},
+      (asset_t){.name = "file02", .contents = "This is the second file\n"},
+  };
+
+  u64 expected_pak_size = sizeof(pak_t);
+
+  u64 expected_count = ARRLEN(assets);
+
+  u64 expected_entries_size = 0;
+
+  for (u64 i = 0; i < expected_count; ++i) {
+    u64 name_length = strlen(assets[i].name) + 1;
+    u64 contents_length = strlen(assets[i].contents) + 1;
+
+    expected_pak_size += name_length + contents_length + sizeof(toc_entry_t) +
+                         sizeof(pak_entry_t);
+
+    expected_entries_size += name_length + sizeof(toc_entry_t);
+  }
+
+  u64 real_size = get_file_length(fp);
+
+  if (expected_pak_size != real_size) {
+    printf("Real size (%zu) doesn't match expected size (%zu)\n", real_size,
+           expected_pak_size);
+
+    fclose(fp);
+
+    return EXIT_FAILURE;
+  }
+
+  pak_t pack = {0};
+  fread((void *)&pack, sizeof(pak_t), 1, fp);
+
+  if (pack.toc.count != expected_count) {
+    printf("Pack file count (%zu) doesn't match expected count (%zu)\n",
+           pack.toc.count, expected_count);
+
+    fclose(fp);
+
+    return EXIT_FAILURE;
+  }
+
+  if (pack.toc.size != expected_entries_size) {
+    printf(
+        "Table of contents real size (%zu) doesn't match expected size (%zu)\n",
+        pack.toc.size, expected_entries_size);
+
+    fclose(fp);
+
+    return EXIT_FAILURE;
+  }
+
+  toc_entry_t *entries[pack.toc.count];
+  memset((void *)entries, 0, sizeof(toc_entry_t *) * 3);
+
+  for (u64 i = 0; i < pack.toc.count; ++i) {
+    u64 pos = ftell(fp);
+
+    u64 data[2] = {0};
+
+    fread(data, ARRLEN(data), 1, fp);
+
+    u64 size = sizeof(toc_entry_t) + data[1];
+
+    entries[i] = malloc(size);
+    if (!(entries[i])) {
+      printf("Allocation failure\n");
+
+      fclose(fp);
+
+      return EXIT_FAILURE;
+    }
+
+    fseek(fp, pos, SEEK_SET);
+
+    fread(&(entries[i]), size, 1, fp);
+  }
+
+  for (u64 i = 0; i < pack.toc.count; ++i) {
+    free(entries[i]);
+  }
+
+  fclose(fp);
+
+  return EXIT_SUCCESS;
+}