commit 23df52df987aad19c742bb0a64ca2544cfe730ea
Author: Ahmed Siam <aahs.coder@gmail.com>
Date:   Mon Jun 5 11:40:09 2023 +0300

    Use fread to load .dat file

diff --git a/Makefile.am b/Makefile.am
index 924c064..72f45d5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
 export LOCALES_DIR=$(datadir)/$(PACKAGE_NAME)
-export LOCALES_DATA=$(LOCALES_DIR)/$(PACKAGE_NAME)
+export LOCALES_DATA=$(LOCALES_DIR)/locales.dat
 
 SUBDIRS = src locales
diff --git a/locales/Makefile.am b/locales/Makefile.am
index 63448f9..590e1cb 100644
--- a/locales/Makefile.am
+++ b/locales/Makefile.am
@@ -1,7 +1,7 @@
 locales.dat: root.txt en.txt
 	genrb -d . root.txt en.txt
 	echo root.res en.res > package_list.txt
-	pkgdata -w -p locales --mode archive -d . package_list.txt
+	pkgdata -p locales --mode archive -d . package_list.txt
 
 localesdir = $(LOCALES_DIR)
 dist_locales_DATA = locales.dat
diff --git a/src/Makefile.am b/src/Makefile.am
index 60de62d..cee526f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -2,4 +2,4 @@ bin_PROGRAMS = icuformat test
 icuformat_SOURCES = icuformat.cpp i18n.cpp
 test_SOURCES = test.cpp i18n.cpp
 
-AM_CPPFLAGS = -DLOCALES_DIR='"$(LOCALES_DIR)"'
+AM_CPPFLAGS = -DLOCALES_DATA='"$(LOCALES_DATA)"'
diff --git a/src/i18n.cpp b/src/i18n.cpp
index 249b263..1c05e66 100644
--- a/src/i18n.cpp
+++ b/src/i18n.cpp
@@ -3,14 +3,40 @@
 #include <unicode/locid.h>
 #include <unicode/ustring.h>
 #include <unicode/msgfmt.h>
+#include <unicode/udata.h>
+#include <filesystem>
 #include <vector>
 #include "i18n.h"
 
-I18n::I18n(const char* locales_path) : resource("", "", status)
+I18n::I18n(const char *locales_path) : resource("", "", status)
 {
     status = U_ZERO_ERROR;
 
-    u_setDataDirectory(locales_path);
+    FILE *file = fopen(locales_path, "r");
+    if (file == NULL) {
+        std::cerr << "Error in opening data file!" << std::endl;
+        exit(EXIT_FAILURE);
+    }
+    size_t file_size = std::filesystem::file_size(std::filesystem::path{locales_path});
+    
+    void *locales_data = malloc(file_size);
+    size_t success_reads = fread(locales_data, 1, file_size, file);
+
+    if (success_reads != file_size) {
+        std::cerr << "Error in loading data file!" << std::endl;
+        exit(EXIT_FAILURE);
+    }
+
+    udata_setAppData("locales", locales_data, &status);
+    
+    fclose(file);
+    free(locales_data);
+
+    if (!U_SUCCESS(status)) {
+        std::cerr << "Error in loading data!" << std::endl;
+        std::cerr << u_errorName(status) << std::endl;
+        exit(EXIT_FAILURE);
+    }
     resource = icu::ResourceBundle("locales", icu::Locale().getName(), status);
 
     if (!U_SUCCESS(status)) {
@@ -43,4 +69,5 @@ icu::UnicodeString I18n::format(const char* key, const std::vector<icu::Formatta
     }
 
     return output;
-}
\ No newline at end of file
+}
+
diff --git a/src/i18n.h b/src/i18n.h
index d1479ee..b1ef574 100644
--- a/src/i18n.h
+++ b/src/i18n.h
@@ -11,7 +11,7 @@ private:
     icu::ResourceBundle resource;
     UErrorCode status;
 public:
-    I18n(const char* locales_dir);
+    I18n(const char *locales_path);
     icu::UnicodeString format(const char* key, const std::vector<icu::Formattable> args = {});
 };
 #endif
\ No newline at end of file
diff --git a/src/icuformat.cpp b/src/icuformat.cpp
index c0d33a7..0ad6c4d 100644
--- a/src/icuformat.cpp
+++ b/src/icuformat.cpp
@@ -9,7 +9,7 @@ int main(int argc, char* argv[])
         return 0;
     }
 
-    I18n i18n {LOCALES_DIR};
+    I18n i18n {LOCALES_DATA};
     
     std::vector<icu::Formattable> arguments;
     for (int i = 2; i < argc; i++) {
@@ -17,6 +17,5 @@ int main(int argc, char* argv[])
     }
 
     std::cout << i18n.format(argv[1], arguments) << std::endl;
-    
     return 0;
 }
\ No newline at end of file
diff --git a/src/test.cpp b/src/test.cpp
index 5f97550..7ddd4bb 100644
--- a/src/test.cpp
+++ b/src/test.cpp
@@ -1,29 +1,10 @@
 #include <iostream>
 #include <unicode/ustream.h>
-#include <unicode/udata.h>
-#include <unicode/utypes.h>
 #include "i18n.h"
-int main() {
-    /*
-    UErrorCode status = U_ZERO_ERROR;
-    UDataMemory *locales_dat = NULL;
-    locales_dat = udata_open(LOCALES_DIR, "dat", "locales", &status);
-    if (!U_SUCCESS(status)) {
-        std::cerr << status << std::endl;
-        exit(EXIT_FAILURE);
-    }
 
-    // UDataInfo *pInfo = NULL;
-    // udata_getInfo(data, pInfo);
-    // std::cout << pInfo->size << std::endl;
 
-    udata_setAppData("locales.dat", udata_getMemory(locales_dat), &status);
-    if (!U_SUCCESS(status)) {
-        std::cerr << "setAppData" << std::endl;
-        std::cerr << status << std::endl;
-        exit(EXIT_FAILURE);
-    }*/
-    I18n i18n {LOCALES_DIR};
+int main() {
+    I18n i18n {LOCALES_DATA};
 
     std::cout << i18n.format("test_message") << std::endl;
     std::cout << i18n.format("complex_message", {"Ahmed", "Egypt"}) << std::endl;