From 157f0be146bf8122a70dcf5940f1033a6462c34c Mon Sep 17 00:00:00 2001
From: Jaakko Keränen <jaakko.keranen@iki.fi>
Date: Mon, 22 Mar 2021 14:57:22 +0200
Subject: Lang: Loading a set of NULL-terminated strings

---
 src/lang.c | 40 +++++++++++++++++++++++++++++++---------
 1 file changed, 31 insertions(+), 9 deletions(-)

diff --git a/src/lang.c b/src/lang.c
index b5f80fd1..3e99c09c 100644
--- a/src/lang.c
+++ b/src/lang.c
@@ -1,4 +1,5 @@
 #include "lang.h"
+#include "embedded.h"
 
 #include <the_Foundation/sortedarray.h>
 #include <the_Foundation/string.h>
@@ -7,8 +8,8 @@ iDeclareType(Lang)
 iDeclareType(MsgStr)
 
 struct Impl_MsgStr {
-    const char *id;
-    iString str;
+    const char *id; /* these point to null-terminated strings in embedded data */
+    const char *str;
 };
 
 int cmp_MsgStr_(const void *e1, const void *e2) {
@@ -24,6 +25,24 @@ struct Impl_Lang {
 
 static iLang lang_;
 
+static void clear_Lang_(iLang *d) {
+    clear_SortedArray(d->messages);
+}
+
+static void load_Lang_(iLang *d, const char *id) {
+    /* Load compiled language strings from an embedded blob. */
+    const iBlock *data = NULL; // &blobLangEn_Embedded;
+    iMsgStr msg;
+    for (const char *ptr = constBegin_Block(data); ptr != constEnd_Block(data); ptr++) {
+        msg.id = ptr;
+        while (*++ptr) {}
+        msg.str = ++ptr;
+        while (*++ptr) {}
+        /* Allocate the string. */
+        insert_SortedArray(d->messages, &msg);
+    }
+}
+
 void init_Lang(void) {
     iLang *d = &lang_;
     d->messages = new_SortedArray(sizeof(iMsgStr), cmp_MsgStr_);
@@ -32,25 +51,28 @@ void init_Lang(void) {
 
 void deinit_Lang(void) {
     iLang *d = &lang_;
+    clear_Lang_(d);
     delete_SortedArray(d->messages);
 }
 
 void setCurrent_Lang(const char *language) {
-    /* TODO: Load compiled language strings from an embedded blob. */
+    iLang *d = &lang_;
+    clear_Lang_(d);
+    load_Lang_(d, language);
 }
 
-const iString *string_Lang(const char *msgId) {
+const char *cstr_Lang(const char *msgId) {
     const iLang *d = &lang_;
     size_t pos;
-    const iMsgStr key = { .id = msgId };
+    const iMsgStr key = { .id = iConstCast(char *, msgId) };
     if (locate_SortedArray(d->messages, &key, &pos)) {
-        return &((const iMsgStr *) at_SortedArray(d->messages, pos))->str;
+        return ((const iMsgStr *) at_SortedArray(d->messages, pos))->str;
     }
     //iAssert(iFalse);
     fprintf(stderr, "[Lang] missing: %s\n", msgId);
-    return collectNewCStr_String(msgId);
+    return msgId;
 }
 
-const char *cstr_Lang(const char *msgId) {
-    return cstr_String(string_Lang(msgId));
+const iString *string_Lang(const char *msgId) {
+    return collectNewCStr_String(cstr_Lang(msgId));
 }
-- 
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