Merge branch 'master' of github.com:omnisci3nce/celeritas-core

1 files changed, 31 insertions, 0 deletions

diff --git a/src/platform/file.c b/src/platform/file.c
index 45c5b30..44aa9d0 100644
--- a/src/platform/file.c
+++ b/src/platform/file.c
@@ -7,6 +7,8 @@
 #include <stdlib.h>
 
 #include "log.h"
+#include "mem.h"
+#include "str.h"
 
 const char *string_from_file(const char *path) {
   FILE *f = fopen(path, "rb");
@@ -29,4 +31,33 @@ const char *string_from_file(const char *path) {
   string[fsize] = '\0';
 
   return string;
+}
+
+str8_opt str8_from_file(arena *a, str8 path) {
+  char *p = cstr(a, path);
+  str8_opt result = { .has_value = false };
+
+  FILE *f = fopen(p, "rb");
+  if (f == NULL) {
+    ERROR("Error reading file: %s. errno: %d", path, errno);
+    return result;
+  }
+  if (ferror(f)) {
+    ERROR("Error reading file: %s. errno: %d", path, errno);
+    return result;
+  }
+  fseek(f, 0, SEEK_END);
+  long fsize = ftell(f);
+  rewind(f);
+
+  u8 *raw = arena_alloc(a, fsize + 1);
+  str8 contents = str8_create(raw, fsize);
+  contents.buf[contents.len] = '\0';
+
+  fread(raw, fsize, 1, f);
+  fclose(f);
+  result.contents = contents;
+  result.has_value = true;
+
+  return result;
 }
\ No newline at end of file