fix bad 0.9.16 version check in config loading; helpers for building version codes, so they can be compared

src/base/base_core.h

@@ -65,6 +65,14 @@
 # define C_LINKAGE
 #endif
 
+////////////////////////////////
+//~ rjf: Versions
+
+#define Version(major, minor, patch) (U64)((((U64)(major) & 0xffff) << 32) | ((((U64)(minor) & 0xffff) << 16)) | ((((U64)(patch) & 0xffff) << 0)))
+#define MajorFromVersion(version) (((version) & 0xffff00000000ull) >> 32)
+#define MinorFromVersion(version) (((version) & 0x0000ffff0000ull) >> 16)
+#define PatchFromVersion(version) (((version) & 0x00000000ffffull) >> 0)
+
 ////////////////////////////////
 //~ rjf: Units
 

src/base/base_strings.c

@@ -1187,6 +1187,41 @@ str8_array_copy(Arena *arena, String8Array array)
   return result;
 }
 
+////////////////////////////////
+//~ rjf: String Version Helpers
+
+internal U64
+version_from_str8(String8 string)
+{
+  U64 result = 0;
+  Temp scratch = scratch_begin(0, 0);
+  U64 version_major = 0;
+  U64 version_minor = 0;
+  U64 version_patch = 0;
+  String8List version_parts = str8_split(scratch.arena, string, (U8 *)".", 1, 0);
+  if(version_parts.first &&
+     version_parts.first->next &&
+     version_parts.first->next->next)
+  {
+    try_u64_from_str8_c_rules(version_parts.first->string, &version_major);
+    try_u64_from_str8_c_rules(version_parts.first->next->string, &version_minor);
+    try_u64_from_str8_c_rules(version_parts.first->next->next->string, &version_patch);
+    result = Version(version_major, version_minor, version_patch);
+  }
+  scratch_end(scratch);
+  return result;
+}
+
+internal String8
+str8_from_version(Arena *arena, U64 version)
+{
+  U64 version_major = MajorFromVersion(version);
+  U64 version_minor = MinorFromVersion(version);
+  U64 version_patch = PatchFromVersion(version);
+  String8 result = push_str8f(arena, "%I64d.%I64d.%I64d", version_major, version_minor, version_patch);
+  return result;
+}
+
 ////////////////////////////////
 //~ rjf: String Path Helpers
 

src/base/base_strings.h

@@ -293,6 +293,12 @@ internal String8Array str8_array_from_list(Arena *arena, String8List *list);
 internal String8Array str8_array_reserve(Arena *arena, U64 count);
 internal String8Array str8_array_copy(Arena *arena, String8Array array);
 
+////////////////////////////////
+//~ rjf: String Version Helpers
+
+internal U64 version_from_str8(String8 string);
+internal String8 str8_from_version(Arena *arena, U64 version);
+
 ////////////////////////////////
 //~ rjf: String Path Helpers