moved Guid struct and related helpers to base

2026-07-21 23:12:01 -07:00 · 2024-11-07 11:54:25 -08:00
parent f807dc4785
commit 214be8c433
21 changed files with 133 additions and 128 deletions
@@ -1588,6 +1588,78 @@ string_from_elapsed_time(Arena *arena, DateTime dt){
  return(result);
 }

+////////////////////////////////
+//~ Globally UNique Ids
+
+internal String8
+string_from_guid(Arena *arena, Guid guid)
+{
+  String8 result = push_str8f(arena, "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
+                              guid.data1,
+                              guid.data2,
+                              guid.data3,
+                              guid.data4[0],
+                              guid.data4[1],
+                              guid.data4[2],
+                              guid.data4[3],
+                              guid.data4[4],
+                              guid.data4[5],
+                              guid.data4[6],
+                              guid.data4[7]);
+  return result;
+}
+
+internal B32
+try_guid_from_string(String8 string, Guid *guid_out)
+{
+  Temp scratch = scratch_begin(0,0);
+  B32 is_parsed = 0;
+  String8List list = str8_split_by_string_chars(scratch.arena, string, str8_lit("-"), StringSplitFlag_KeepEmpties);
+  if(list.node_count == 5)
+  {
+    String8 data1_str    = list.first->string;
+    String8 data2_str    = list.first->next->string;
+    String8 data3_str    = list.first->next->next->string;
+    String8 data4_hi_str = list.first->next->next->next->string;
+    String8 data4_lo_str = list.first->next->next->next->next->string;
+    if(str8_is_integer(data1_str, 16) && 
+        str8_is_integer(data2_str, 16) &&
+        str8_is_integer(data3_str, 16) &&
+        str8_is_integer(data4_hi_str, 16) &&
+        str8_is_integer(data4_lo_str, 16))
+    {
+      U64 data1    = u64_from_str8(data1_str, 16);
+      U64 data2    = u64_from_str8(data2_str, 16);
+      U64 data3    = u64_from_str8(data3_str, 16);
+      U64 data4_hi = u64_from_str8(data4_hi_str, 16);
+      U64 data4_lo = u64_from_str8(data4_lo_str, 16);
+      if(data1 <= max_U32 &&
+          data2 <= max_U16 &&
+          data3 <= max_U16 &&
+          data4_hi <= max_U16 &&
+          data4_lo <= 0xffffffffffff)
+      {
+        guid_out->data1 = (U32)data1;
+        guid_out->data2 = (U16)data2;
+        guid_out->data3 = (U16)data3;
+        U64 data4 = (data4_hi << 48) | data4_lo;
+        MemoryCopy(&guid_out->data4[0], &data4, sizeof(data4));
+        is_parsed = 1;
+      }
+    }
+  }
+  scratch_end(scratch);
+  return is_parsed;
+}
+
+internal Guid
+guid_from_string(String8 string)
+{
+  Guid guid = {0};
+  try_guid_from_string(string, &guid);
+  return guid;
+}
+
 ////////////////////////////////
 //~ rjf: Basic Text Indentation