From: Igor Sysoev <igor@sysoev.ru>
Date: Fri, 15 Apr 2016 15:01:19 +0000 (+0300)
Subject: String.toLowerCase().
X-Git-Tag: 0.1.0~32
X-Git-Url: http://git.kaiwu.me/postgresql/log/contrib/postgres_fdw/static/gitweb.js?a=commitdiff_plain;h=91ce3dcc64df7618d3f21ff7cc4d065c1b5260ca;p=njs.git

String.toLowerCase().
---

diff --git a/njs/njs_string.c b/njs/njs_string.c
index d7e853c6..67c269a8 100644
--- a/njs/njs_string.c
+++ b/njs/njs_string.c
@@ -1291,6 +1291,58 @@ njs_string_index(njs_string_prop_t *string, uint32_t offset)
 }
 
 
+/*
+ * String.toLowerCase().
+ * The method supports only simple folding.  For example, Turkish "Ä°"
+ * folding "\u0130" to "\u0069\u0307" is not supported.
+ */
+
+static njs_ret_t
+njs_string_prototype_to_lower_case(njs_vm_t *vm, njs_value_t *args,
+    nxt_uint_t nargs, njs_index_t unused)
+{
+    size_t             size;
+    u_char             *p, *start;
+    const u_char       *s, *end;
+    njs_string_prop_t  string;
+
+    (void) njs_string_prop(&string, &args[0]);
+
+    start = njs_string_alloc(vm, &vm->retval, string.size, string.length);
+    if (nxt_slow_path(start == NULL)) {
+        return NXT_ERROR;
+    }
+
+    p = start;
+    s = string.start;
+    size = string.size;
+
+    if (string.length == 0 || string.length == size) {
+        /* Byte or ASCII string. */
+
+        while (size != 0) {
+            *p++ = nxt_lower_case(*s++);
+            size--;
+        }
+
+    } else {
+        /* UTF-8 string. */
+        end = s + size;
+
+        while (size != 0) {
+            p = nxt_utf8_encode(p, nxt_utf8_lower_case(&s, end));
+            size--;
+        }
+
+        if (string.length >= NJS_STRING_MAP_OFFSET) {
+            njs_string_offset_map_init(start, string.size);
+        }
+    }
+
+    return NXT_OK;
+}
+
+
 static njs_ret_t
 njs_string_prototype_search(njs_vm_t *vm, njs_value_t *args, nxt_uint_t nargs,
     njs_index_t unused)
@@ -1752,6 +1804,13 @@ static const njs_object_prop_t  njs_string_prototype_properties[] =
                      NJS_STRING_OBJECT_ARG, NJS_STRING_ARG, NJS_INTEGER_ARG),
     },
 
+    {
+        .type = NJS_METHOD,
+        .name = njs_string("toLowerCase"),
+        .value = njs_native_function(njs_string_prototype_to_lower_case, 0,
+                     NJS_STRING_OBJECT_ARG, NJS_REGEXP_ARG),
+    },
+
     {
         .type = NJS_METHOD,
         .name = njs_string("search"),
diff --git a/njs/test/njs_unit_test.c b/njs/test/njs_unit_test.c
index 80d1ac1f..76da19b8 100644
--- a/njs/test/njs_unit_test.c
+++ b/njs/test/njs_unit_test.c
@@ -2745,6 +2745,15 @@ static njs_unit_test_t  njs_test[] =
     { nxt_string("'abc abc abc abc'.lastIndexOf('abc', 0)"),
       nxt_string("-1") },
 
+    { nxt_string("'ABC'.toLowerCase()"),
+      nxt_string("abc") },
+
+    { nxt_string("'ΑΒΓ'.toLowerCase()"),
+      nxt_string("αβγ") },
+
+    { nxt_string("'АБВ'.toLowerCase()"),
+      nxt_string("абв") },
+
     { nxt_string("'abcdefgh'.search()"),
       nxt_string("0") },
 
diff --git a/nxt/Makefile b/nxt/Makefile
index 7f9fb31d..98f3e2de 100644
--- a/nxt/Makefile
+++ b/nxt/Makefile
@@ -47,6 +47,7 @@ $(NXT_BUILDDIR)/nxt_utf8.o: \
 	$(NXT_LIB)/nxt_types.h \
 	$(NXT_LIB)/nxt_clang.h \
 	$(NXT_LIB)/nxt_utf8.h \
+	$(NXT_LIB)/nxt_unicode_lower_case.h \
 	$(NXT_LIB)/nxt_utf8.c \
 
 	$(NXT_CC) -c -o $(NXT_BUILDDIR)/nxt_utf8.o $(NXT_CFLAGS) \
diff --git a/nxt/nxt_djb_hash.c b/nxt/nxt_djb_hash.c
index 0541094e..3c6838a0 100644
--- a/nxt/nxt_djb_hash.c
+++ b/nxt/nxt_djb_hash.c
@@ -31,7 +31,6 @@ nxt_djb_hash(const void *data, size_t len)
 uint32_t
 nxt_djb_hash_lowcase(const void *data, size_t len)
 {
-    u_char        c;
     uint32_t      hash;
     const u_char  *p;
 
@@ -39,8 +38,7 @@ nxt_djb_hash_lowcase(const void *data, size_t len)
     hash = NXT_DJB_HASH_INIT;
 
     while (len != 0) {
-        c = *p++;
-        hash = nxt_djb_hash_add(hash, nxt_lowcase(c));
+        hash = nxt_djb_hash_add(hash, nxt_lower_case(*p++));
         len--;
     }
 
diff --git a/nxt/nxt_stub.h b/nxt/nxt_stub.h
index 138cd04c..05ebbef2 100644
--- a/nxt/nxt_stub.h
+++ b/nxt/nxt_stub.h
@@ -14,8 +14,13 @@
 #define nxt_min(val1, val2)                                                   \
     ((val1 < val2) ? (val1) : (val2))
 
-#define nxt_lowcase(c)                                                        \
-    (u_char) ((c >= 'A' && c <= 'Z') ? c | 0x20 : c)
+
+nxt_inline u_char
+nxt_lower_case(u_char c)
+{
+    return (u_char) ((c >= 'A' && c <= 'Z') ? c | 0x20 : c);
+}
+
 
 #define nxt_strstr_eq(s1, s2)                                                 \
     (((s1)->len == (s2)->len)                                                 \
diff --git a/nxt/nxt_unicode_lowcase.h b/nxt/nxt_unicode_lower_case.h
similarity index 90%
rename from nxt/nxt_unicode_lowcase.h
rename to nxt/nxt_unicode_lower_case.h
index c868ad19..2bfef709 100644
--- a/nxt/nxt_unicode_lowcase.h
+++ b/nxt/nxt_unicode_lower_case.h
@@ -4,12 +4,12 @@
  * 14920 bytes on 32-bit platforms, 17000 bytes on 64-bit platforms.
  */
 
-#define NXT_UNICODE_MAX_LOWCASE  0x10427
+#define NXT_UNICODE_MAX_LOWER_CASE  0x10427
 
-#define NXT_UNICODE_BLOCK_SIZE   128
+#define NXT_UNICODE_BLOCK_SIZE      128
 
 
-static const uint32_t  nxt_unicode_block_000[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_000[128]  nxt_aligned(64) = {
     0x00000, 0x00001, 0x00002, 0x00003, 0x00004, 0x00005, 0x00006, 0x00007,
     0x00008, 0x00009, 0x0000a, 0x0000b, 0x0000c, 0x0000d, 0x0000e, 0x0000f,
     0x00010, 0x00011, 0x00012, 0x00013, 0x00014, 0x00015, 0x00016, 0x00017,
@@ -29,14 +29,14 @@ static const uint32_t  nxt_unicode_block_000[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_001[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_001[128]  nxt_aligned(64) = {
     0x00080, 0x00081, 0x00082, 0x00083, 0x00084, 0x00085, 0x00086, 0x00087,
     0x00088, 0x00089, 0x0008a, 0x0008b, 0x0008c, 0x0008d, 0x0008e, 0x0008f,
     0x00090, 0x00091, 0x00092, 0x00093, 0x00094, 0x00095, 0x00096, 0x00097,
     0x00098, 0x00099, 0x0009a, 0x0009b, 0x0009c, 0x0009d, 0x0009e, 0x0009f,
     0x000a0, 0x000a1, 0x000a2, 0x000a3, 0x000a4, 0x000a5, 0x000a6, 0x000a7,
     0x000a8, 0x000a9, 0x000aa, 0x000ab, 0x000ac, 0x000ad, 0x000ae, 0x000af,
-    0x000b0, 0x000b1, 0x000b2, 0x000b3, 0x000b4, 0x003bc, 0x000b6, 0x000b7,
+    0x000b0, 0x000b1, 0x000b2, 0x000b3, 0x000b4, 0x000b5, 0x000b6, 0x000b7,
     0x000b8, 0x000b9, 0x000ba, 0x000bb, 0x000bc, 0x000bd, 0x000be, 0x000bf,
     0x000e0, 0x000e1, 0x000e2, 0x000e3, 0x000e4, 0x000e5, 0x000e6, 0x000e7,
     0x000e8, 0x000e9, 0x000ea, 0x000eb, 0x000ec, 0x000ed, 0x000ee, 0x000ef,
@@ -49,14 +49,14 @@ static const uint32_t  nxt_unicode_block_001[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_002[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_002[128]  nxt_aligned(64) = {
     0x00101, 0x00101, 0x00103, 0x00103, 0x00105, 0x00105, 0x00107, 0x00107,
     0x00109, 0x00109, 0x0010b, 0x0010b, 0x0010d, 0x0010d, 0x0010f, 0x0010f,
     0x00111, 0x00111, 0x00113, 0x00113, 0x00115, 0x00115, 0x00117, 0x00117,
     0x00119, 0x00119, 0x0011b, 0x0011b, 0x0011d, 0x0011d, 0x0011f, 0x0011f,
     0x00121, 0x00121, 0x00123, 0x00123, 0x00125, 0x00125, 0x00127, 0x00127,
     0x00129, 0x00129, 0x0012b, 0x0012b, 0x0012d, 0x0012d, 0x0012f, 0x0012f,
-    0x00130, 0x00131, 0x00133, 0x00133, 0x00135, 0x00135, 0x00137, 0x00137,
+    0x00069, 0x00131, 0x00133, 0x00133, 0x00135, 0x00135, 0x00137, 0x00137,
     0x00138, 0x0013a, 0x0013a, 0x0013c, 0x0013c, 0x0013e, 0x0013e, 0x00140,
     0x00140, 0x00142, 0x00142, 0x00144, 0x00144, 0x00146, 0x00146, 0x00148,
     0x00148, 0x00149, 0x0014b, 0x0014b, 0x0014d, 0x0014d, 0x0014f, 0x0014f,
@@ -65,11 +65,11 @@ static const uint32_t  nxt_unicode_block_002[128]  nxt_aligned(64) = {
     0x00161, 0x00161, 0x00163, 0x00163, 0x00165, 0x00165, 0x00167, 0x00167,
     0x00169, 0x00169, 0x0016b, 0x0016b, 0x0016d, 0x0016d, 0x0016f, 0x0016f,
     0x00171, 0x00171, 0x00173, 0x00173, 0x00175, 0x00175, 0x00177, 0x00177,
-    0x000ff, 0x0017a, 0x0017a, 0x0017c, 0x0017c, 0x0017e, 0x0017e, 0x00073,
+    0x000ff, 0x0017a, 0x0017a, 0x0017c, 0x0017c, 0x0017e, 0x0017e, 0x0017f,
 };
 
 
-static const uint32_t  nxt_unicode_block_003[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_003[128]  nxt_aligned(64) = {
     0x00180, 0x00253, 0x00183, 0x00183, 0x00185, 0x00185, 0x00254, 0x00188,
     0x00188, 0x00256, 0x00257, 0x0018c, 0x0018c, 0x0018d, 0x001dd, 0x00259,
     0x0025b, 0x00192, 0x00192, 0x00260, 0x00263, 0x00195, 0x00269, 0x00268,
@@ -89,7 +89,7 @@ static const uint32_t  nxt_unicode_block_003[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_004[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_004[128]  nxt_aligned(64) = {
     0x00201, 0x00201, 0x00203, 0x00203, 0x00205, 0x00205, 0x00207, 0x00207,
     0x00209, 0x00209, 0x0020b, 0x0020b, 0x0020d, 0x0020d, 0x0020f, 0x0020f,
     0x00211, 0x00211, 0x00213, 0x00213, 0x00215, 0x00215, 0x00217, 0x00217,
@@ -109,7 +109,7 @@ static const uint32_t  nxt_unicode_block_004[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_006[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_006[128]  nxt_aligned(64) = {
     0x00300, 0x00301, 0x00302, 0x00303, 0x00304, 0x00305, 0x00306, 0x00307,
     0x00308, 0x00309, 0x0030a, 0x0030b, 0x0030c, 0x0030d, 0x0030e, 0x0030f,
     0x00310, 0x00311, 0x00312, 0x00313, 0x00314, 0x00315, 0x00316, 0x00317,
@@ -118,7 +118,7 @@ static const uint32_t  nxt_unicode_block_006[128]  nxt_aligned(64) = {
     0x00328, 0x00329, 0x0032a, 0x0032b, 0x0032c, 0x0032d, 0x0032e, 0x0032f,
     0x00330, 0x00331, 0x00332, 0x00333, 0x00334, 0x00335, 0x00336, 0x00337,
     0x00338, 0x00339, 0x0033a, 0x0033b, 0x0033c, 0x0033d, 0x0033e, 0x0033f,
-    0x00340, 0x00341, 0x00342, 0x00343, 0x00344, 0x003b9, 0x00346, 0x00347,
+    0x00340, 0x00341, 0x00342, 0x00343, 0x00344, 0x00345, 0x00346, 0x00347,
     0x00348, 0x00349, 0x0034a, 0x0034b, 0x0034c, 0x0034d, 0x0034e, 0x0034f,
     0x00350, 0x00351, 0x00352, 0x00353, 0x00354, 0x00355, 0x00356, 0x00357,
     0x00358, 0x00359, 0x0035a, 0x0035b, 0x0035c, 0x0035d, 0x0035e, 0x0035f,
@@ -129,7 +129,7 @@ static const uint32_t  nxt_unicode_block_006[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_007[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_007[128]  nxt_aligned(64) = {
     0x00380, 0x00381, 0x00382, 0x00383, 0x00384, 0x00385, 0x003ac, 0x00387,
     0x003ad, 0x003ae, 0x003af, 0x0038b, 0x003cc, 0x0038d, 0x003cd, 0x003ce,
     0x00390, 0x003b1, 0x003b2, 0x003b3, 0x003b4, 0x003b5, 0x003b6, 0x003b7,
@@ -138,18 +138,18 @@ static const uint32_t  nxt_unicode_block_007[128]  nxt_aligned(64) = {
     0x003c8, 0x003c9, 0x003ca, 0x003cb, 0x003ac, 0x003ad, 0x003ae, 0x003af,
     0x003b0, 0x003b1, 0x003b2, 0x003b3, 0x003b4, 0x003b5, 0x003b6, 0x003b7,
     0x003b8, 0x003b9, 0x003ba, 0x003bb, 0x003bc, 0x003bd, 0x003be, 0x003bf,
-    0x003c0, 0x003c1, 0x003c3, 0x003c3, 0x003c4, 0x003c5, 0x003c6, 0x003c7,
+    0x003c0, 0x003c1, 0x003c2, 0x003c3, 0x003c4, 0x003c5, 0x003c6, 0x003c7,
     0x003c8, 0x003c9, 0x003ca, 0x003cb, 0x003cc, 0x003cd, 0x003ce, 0x003d7,
-    0x003b2, 0x003b8, 0x003d2, 0x003d3, 0x003d4, 0x003c6, 0x003c0, 0x003d7,
+    0x003d0, 0x003d1, 0x003d2, 0x003d3, 0x003d4, 0x003d5, 0x003d6, 0x003d7,
     0x003d9, 0x003d9, 0x003db, 0x003db, 0x003dd, 0x003dd, 0x003df, 0x003df,
     0x003e1, 0x003e1, 0x003e3, 0x003e3, 0x003e5, 0x003e5, 0x003e7, 0x003e7,
     0x003e9, 0x003e9, 0x003eb, 0x003eb, 0x003ed, 0x003ed, 0x003ef, 0x003ef,
-    0x003ba, 0x003c1, 0x003f2, 0x003f3, 0x003b8, 0x003b5, 0x003f6, 0x003f8,
+    0x003f0, 0x003f1, 0x003f2, 0x003f3, 0x003b8, 0x003f5, 0x003f6, 0x003f8,
     0x003f8, 0x003f2, 0x003fb, 0x003fb, 0x003fc, 0x0037b, 0x0037c, 0x0037d,
 };
 
 
-static const uint32_t  nxt_unicode_block_008[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_008[128]  nxt_aligned(64) = {
     0x00450, 0x00451, 0x00452, 0x00453, 0x00454, 0x00455, 0x00456, 0x00457,
     0x00458, 0x00459, 0x0045a, 0x0045b, 0x0045c, 0x0045d, 0x0045e, 0x0045f,
     0x00430, 0x00431, 0x00432, 0x00433, 0x00434, 0x00435, 0x00436, 0x00437,
@@ -169,7 +169,7 @@ static const uint32_t  nxt_unicode_block_008[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_009[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_009[128]  nxt_aligned(64) = {
     0x00481, 0x00481, 0x00482, 0x00483, 0x00484, 0x00485, 0x00486, 0x00487,
     0x00488, 0x00489, 0x0048b, 0x0048b, 0x0048d, 0x0048d, 0x0048f, 0x0048f,
     0x00491, 0x00491, 0x00493, 0x00493, 0x00495, 0x00495, 0x00497, 0x00497,
@@ -189,7 +189,7 @@ static const uint32_t  nxt_unicode_block_009[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_00a[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_00a[128]  nxt_aligned(64) = {
     0x00501, 0x00501, 0x00503, 0x00503, 0x00505, 0x00505, 0x00507, 0x00507,
     0x00509, 0x00509, 0x0050b, 0x0050b, 0x0050d, 0x0050d, 0x0050f, 0x0050f,
     0x00511, 0x00511, 0x00513, 0x00513, 0x00515, 0x00515, 0x00517, 0x00517,
@@ -209,7 +209,7 @@ static const uint32_t  nxt_unicode_block_00a[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_021[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_021[128]  nxt_aligned(64) = {
     0x01080, 0x01081, 0x01082, 0x01083, 0x01084, 0x01085, 0x01086, 0x01087,
     0x01088, 0x01089, 0x0108a, 0x0108b, 0x0108c, 0x0108d, 0x0108e, 0x0108f,
     0x01090, 0x01091, 0x01092, 0x01093, 0x01094, 0x01095, 0x01096, 0x01097,
@@ -229,7 +229,7 @@ static const uint32_t  nxt_unicode_block_021[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_03c[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_03c[128]  nxt_aligned(64) = {
     0x01e01, 0x01e01, 0x01e03, 0x01e03, 0x01e05, 0x01e05, 0x01e07, 0x01e07,
     0x01e09, 0x01e09, 0x01e0b, 0x01e0b, 0x01e0d, 0x01e0d, 0x01e0f, 0x01e0f,
     0x01e11, 0x01e11, 0x01e13, 0x01e13, 0x01e15, 0x01e15, 0x01e17, 0x01e17,
@@ -249,11 +249,11 @@ static const uint32_t  nxt_unicode_block_03c[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_03d[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_03d[128]  nxt_aligned(64) = {
     0x01e81, 0x01e81, 0x01e83, 0x01e83, 0x01e85, 0x01e85, 0x01e87, 0x01e87,
     0x01e89, 0x01e89, 0x01e8b, 0x01e8b, 0x01e8d, 0x01e8d, 0x01e8f, 0x01e8f,
     0x01e91, 0x01e91, 0x01e93, 0x01e93, 0x01e95, 0x01e95, 0x01e96, 0x01e97,
-    0x01e98, 0x01e99, 0x01e9a, 0x01e61, 0x01e9c, 0x01e9d, 0x000df, 0x01e9f,
+    0x01e98, 0x01e99, 0x01e9a, 0x01e9b, 0x01e9c, 0x01e9d, 0x000df, 0x01e9f,
     0x01ea1, 0x01ea1, 0x01ea3, 0x01ea3, 0x01ea5, 0x01ea5, 0x01ea7, 0x01ea7,
     0x01ea9, 0x01ea9, 0x01eab, 0x01eab, 0x01ead, 0x01ead, 0x01eaf, 0x01eaf,
     0x01eb1, 0x01eb1, 0x01eb3, 0x01eb3, 0x01eb5, 0x01eb5, 0x01eb7, 0x01eb7,
@@ -269,7 +269,7 @@ static const uint32_t  nxt_unicode_block_03d[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_03e[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_03e[128]  nxt_aligned(64) = {
     0x01f00, 0x01f01, 0x01f02, 0x01f03, 0x01f04, 0x01f05, 0x01f06, 0x01f07,
     0x01f00, 0x01f01, 0x01f02, 0x01f03, 0x01f04, 0x01f05, 0x01f06, 0x01f07,
     0x01f10, 0x01f11, 0x01f12, 0x01f13, 0x01f14, 0x01f15, 0x01f16, 0x01f17,
@@ -289,7 +289,7 @@ static const uint32_t  nxt_unicode_block_03e[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_03f[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_03f[128]  nxt_aligned(64) = {
     0x01f80, 0x01f81, 0x01f82, 0x01f83, 0x01f84, 0x01f85, 0x01f86, 0x01f87,
     0x01f80, 0x01f81, 0x01f82, 0x01f83, 0x01f84, 0x01f85, 0x01f86, 0x01f87,
     0x01f90, 0x01f91, 0x01f92, 0x01f93, 0x01f94, 0x01f95, 0x01f96, 0x01f97,
@@ -297,7 +297,7 @@ static const uint32_t  nxt_unicode_block_03f[128]  nxt_aligned(64) = {
     0x01fa0, 0x01fa1, 0x01fa2, 0x01fa3, 0x01fa4, 0x01fa5, 0x01fa6, 0x01fa7,
     0x01fa0, 0x01fa1, 0x01fa2, 0x01fa3, 0x01fa4, 0x01fa5, 0x01fa6, 0x01fa7,
     0x01fb0, 0x01fb1, 0x01fb2, 0x01fb3, 0x01fb4, 0x01fb5, 0x01fb6, 0x01fb7,
-    0x01fb0, 0x01fb1, 0x01f70, 0x01f71, 0x01fb3, 0x01fbd, 0x003b9, 0x01fbf,
+    0x01fb0, 0x01fb1, 0x01f70, 0x01f71, 0x01fb3, 0x01fbd, 0x01fbe, 0x01fbf,
     0x01fc0, 0x01fc1, 0x01fc2, 0x01fc3, 0x01fc4, 0x01fc5, 0x01fc6, 0x01fc7,
     0x01f72, 0x01f73, 0x01f74, 0x01f75, 0x01fc3, 0x01fcd, 0x01fce, 0x01fcf,
     0x01fd0, 0x01fd1, 0x01fd2, 0x01fd3, 0x01fd4, 0x01fd5, 0x01fd6, 0x01fd7,
@@ -309,7 +309,7 @@ static const uint32_t  nxt_unicode_block_03f[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_042[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_042[128]  nxt_aligned(64) = {
     0x02100, 0x02101, 0x02102, 0x02103, 0x02104, 0x02105, 0x02106, 0x02107,
     0x02108, 0x02109, 0x0210a, 0x0210b, 0x0210c, 0x0210d, 0x0210e, 0x0210f,
     0x02110, 0x02111, 0x02112, 0x02113, 0x02114, 0x02115, 0x02116, 0x02117,
@@ -329,7 +329,7 @@ static const uint32_t  nxt_unicode_block_042[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_043[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_043[128]  nxt_aligned(64) = {
     0x02180, 0x02181, 0x02182, 0x02184, 0x02184, 0x02185, 0x02186, 0x02187,
     0x02188, 0x02189, 0x0218a, 0x0218b, 0x0218c, 0x0218d, 0x0218e, 0x0218f,
     0x02190, 0x02191, 0x02192, 0x02193, 0x02194, 0x02195, 0x02196, 0x02197,
@@ -349,7 +349,7 @@ static const uint32_t  nxt_unicode_block_043[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_049[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_049[128]  nxt_aligned(64) = {
     0x02480, 0x02481, 0x02482, 0x02483, 0x02484, 0x02485, 0x02486, 0x02487,
     0x02488, 0x02489, 0x0248a, 0x0248b, 0x0248c, 0x0248d, 0x0248e, 0x0248f,
     0x02490, 0x02491, 0x02492, 0x02493, 0x02494, 0x02495, 0x02496, 0x02497,
@@ -369,7 +369,7 @@ static const uint32_t  nxt_unicode_block_049[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_058[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_058[128]  nxt_aligned(64) = {
     0x02c30, 0x02c31, 0x02c32, 0x02c33, 0x02c34, 0x02c35, 0x02c36, 0x02c37,
     0x02c38, 0x02c39, 0x02c3a, 0x02c3b, 0x02c3c, 0x02c3d, 0x02c3e, 0x02c3f,
     0x02c40, 0x02c41, 0x02c42, 0x02c43, 0x02c44, 0x02c45, 0x02c46, 0x02c47,
@@ -389,7 +389,7 @@ static const uint32_t  nxt_unicode_block_058[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_059[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_059[128]  nxt_aligned(64) = {
     0x02c81, 0x02c81, 0x02c83, 0x02c83, 0x02c85, 0x02c85, 0x02c87, 0x02c87,
     0x02c89, 0x02c89, 0x02c8b, 0x02c8b, 0x02c8d, 0x02c8d, 0x02c8f, 0x02c8f,
     0x02c91, 0x02c91, 0x02c93, 0x02c93, 0x02c95, 0x02c95, 0x02c97, 0x02c97,
@@ -409,7 +409,7 @@ static const uint32_t  nxt_unicode_block_059[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_14c[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_14c[128]  nxt_aligned(64) = {
     0x0a600, 0x0a601, 0x0a602, 0x0a603, 0x0a604, 0x0a605, 0x0a606, 0x0a607,
     0x0a608, 0x0a609, 0x0a60a, 0x0a60b, 0x0a60c, 0x0a60d, 0x0a60e, 0x0a60f,
     0x0a610, 0x0a611, 0x0a612, 0x0a613, 0x0a614, 0x0a615, 0x0a616, 0x0a617,
@@ -429,7 +429,7 @@ static const uint32_t  nxt_unicode_block_14c[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_14d[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_14d[128]  nxt_aligned(64) = {
     0x0a681, 0x0a681, 0x0a683, 0x0a683, 0x0a685, 0x0a685, 0x0a687, 0x0a687,
     0x0a689, 0x0a689, 0x0a68b, 0x0a68b, 0x0a68d, 0x0a68d, 0x0a68f, 0x0a68f,
     0x0a691, 0x0a691, 0x0a693, 0x0a693, 0x0a695, 0x0a695, 0x0a697, 0x0a697,
@@ -449,7 +449,7 @@ static const uint32_t  nxt_unicode_block_14d[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_14e[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_14e[128]  nxt_aligned(64) = {
     0x0a700, 0x0a701, 0x0a702, 0x0a703, 0x0a704, 0x0a705, 0x0a706, 0x0a707,
     0x0a708, 0x0a709, 0x0a70a, 0x0a70b, 0x0a70c, 0x0a70d, 0x0a70e, 0x0a70f,
     0x0a710, 0x0a711, 0x0a712, 0x0a713, 0x0a714, 0x0a715, 0x0a716, 0x0a717,
@@ -469,7 +469,7 @@ static const uint32_t  nxt_unicode_block_14e[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_14f[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_14f[128]  nxt_aligned(64) = {
     0x0a781, 0x0a781, 0x0a783, 0x0a783, 0x0a785, 0x0a785, 0x0a787, 0x0a787,
     0x0a788, 0x0a789, 0x0a78a, 0x0a78c, 0x0a78c, 0x00265, 0x0a78e, 0x0a78f,
     0x0a791, 0x0a791, 0x0a793, 0x0a793, 0x0a794, 0x0a795, 0x0a796, 0x0a797,
@@ -489,7 +489,7 @@ static const uint32_t  nxt_unicode_block_14f[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_1fe[128]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_1fe[128]  nxt_aligned(64) = {
     0x0ff00, 0x0ff01, 0x0ff02, 0x0ff03, 0x0ff04, 0x0ff05, 0x0ff06, 0x0ff07,
     0x0ff08, 0x0ff09, 0x0ff0a, 0x0ff0b, 0x0ff0c, 0x0ff0d, 0x0ff0e, 0x0ff0f,
     0x0ff10, 0x0ff11, 0x0ff12, 0x0ff13, 0x0ff14, 0x0ff15, 0x0ff16, 0x0ff17,
@@ -509,7 +509,7 @@ static const uint32_t  nxt_unicode_block_1fe[128]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  nxt_unicode_block_208[40]  nxt_aligned(64) = {
+static const uint32_t  nxt_unicode_lower_case_block_208[40]  nxt_aligned(64) = {
     0x10428, 0x10429, 0x1042a, 0x1042b, 0x1042c, 0x1042d, 0x1042e, 0x1042f,
     0x10430, 0x10431, 0x10432, 0x10433, 0x10434, 0x10435, 0x10436, 0x10437,
     0x10438, 0x10439, 0x1043a, 0x1043b, 0x1043c, 0x1043d, 0x1043e, 0x1043f,
@@ -518,18 +518,18 @@ static const uint32_t  nxt_unicode_block_208[40]  nxt_aligned(64) = {
 };
 
 
-static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
-    nxt_unicode_block_000,
-    nxt_unicode_block_001,
-    nxt_unicode_block_002,
-    nxt_unicode_block_003,
-    nxt_unicode_block_004,
+static const uint32_t  *nxt_unicode_lower_case_blocks[]  nxt_aligned(64) = {
+    nxt_unicode_lower_case_block_000,
+    nxt_unicode_lower_case_block_001,
+    nxt_unicode_lower_case_block_002,
+    nxt_unicode_lower_case_block_003,
+    nxt_unicode_lower_case_block_004,
     NULL,
-    nxt_unicode_block_006,
-    nxt_unicode_block_007,
-    nxt_unicode_block_008,
-    nxt_unicode_block_009,
-    nxt_unicode_block_00a,
+    nxt_unicode_lower_case_block_006,
+    nxt_unicode_lower_case_block_007,
+    nxt_unicode_lower_case_block_008,
+    nxt_unicode_lower_case_block_009,
+    nxt_unicode_lower_case_block_00a,
     NULL,
     NULL,
     NULL,
@@ -552,7 +552,7 @@ static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_021,
+    nxt_unicode_lower_case_block_021,
     NULL,
     NULL,
     NULL,
@@ -579,20 +579,20 @@ static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_03c,
-    nxt_unicode_block_03d,
-    nxt_unicode_block_03e,
-    nxt_unicode_block_03f,
+    nxt_unicode_lower_case_block_03c,
+    nxt_unicode_lower_case_block_03d,
+    nxt_unicode_lower_case_block_03e,
+    nxt_unicode_lower_case_block_03f,
     NULL,
     NULL,
-    nxt_unicode_block_042,
-    nxt_unicode_block_043,
+    nxt_unicode_lower_case_block_042,
+    nxt_unicode_lower_case_block_043,
     NULL,
     NULL,
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_049,
+    nxt_unicode_lower_case_block_049,
     NULL,
     NULL,
     NULL,
@@ -607,8 +607,8 @@ static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_058,
-    nxt_unicode_block_059,
+    nxt_unicode_lower_case_block_058,
+    nxt_unicode_lower_case_block_059,
     NULL,
     NULL,
     NULL,
@@ -851,10 +851,10 @@ static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_14c,
-    nxt_unicode_block_14d,
-    nxt_unicode_block_14e,
-    nxt_unicode_block_14f,
+    nxt_unicode_lower_case_block_14c,
+    nxt_unicode_lower_case_block_14d,
+    nxt_unicode_lower_case_block_14e,
+    nxt_unicode_lower_case_block_14f,
     NULL,
     NULL,
     NULL,
@@ -1029,7 +1029,7 @@ static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_1fe,
+    nxt_unicode_lower_case_block_1fe,
     NULL,
     NULL,
     NULL,
@@ -1039,5 +1039,5 @@ static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {
     NULL,
     NULL,
     NULL,
-    nxt_unicode_block_208,
+    nxt_unicode_lower_case_block_208,
 };
diff --git a/nxt/nxt_unicode_lowcase.pl b/nxt/nxt_unicode_lower_case.pl
similarity index 64%
rename from nxt/nxt_unicode_lowcase.pl
rename to nxt/nxt_unicode_lower_case.pl
index aca17fcd..58de8764 100755
--- a/nxt/nxt_unicode_lowcase.pl
+++ b/nxt/nxt_unicode_lower_case.pl
@@ -7,25 +7,28 @@ use strict;
 # the minimum memory footprint for both 32-bit and 64-bit platforms.
 use constant BLOCK_SIZE => 128;
 
-my %lowcase;
+my %lower_case;
 my %blocks;
 my $max_block = 0;
-my $max_lowcase = 0;
+my $max_lower_case = 0;
 
 while (<>) {
-    if (/^(\w+); (C|S); (\w+);/) {
-        my ($symbol, $folding) = (hex $1, hex $3);
-        $lowcase{$symbol} = $folding;
+    my @line = split(";", $_);
+
+    if ($line[13]) {
+        my ($symbol, $folding) = (hex $line[0], hex $line[13]);
+
+        $lower_case{$symbol} = $folding;
         $blocks{int($symbol / BLOCK_SIZE)} = 1;
 
-        if ($max_lowcase < $symbol) {
-            $max_lowcase = $symbol;
+        if ($max_lower_case < $symbol) {
+            $max_lower_case = $symbol;
         }
     }
 }
 
 
-my $last_block_size = $max_lowcase % BLOCK_SIZE + 1;
+my $last_block_size = $max_lower_case % BLOCK_SIZE + 1;
 
 
 for my $block (sort { $a <=> $b } keys %blocks) {
@@ -45,15 +48,15 @@ printf("\n/*\n" .
        ($blocks - 1) * BLOCK_SIZE * 4 + $last_block_size + $max_block * 4,
        ($blocks - 1) * BLOCK_SIZE * 4 + $last_block_size + $max_block * 8);
 
-printf("#define NXT_UNICODE_MAX_LOWCASE  0x%05x\n\n", $max_lowcase);
-printf("#define NXT_UNICODE_BLOCK_SIZE   %d\n\n\n", BLOCK_SIZE);
+printf("#define NXT_UNICODE_MAX_LOWER_CASE  0x%05x\n\n", $max_lower_case);
+printf("#define NXT_UNICODE_BLOCK_SIZE      %d\n\n\n", BLOCK_SIZE);
 
 
 for my $block (sort { $a <=> $b } keys %blocks) {
     my $block_size = ($block != $max_block) ? BLOCK_SIZE : $last_block_size;
 
     print "static const uint32_t  ";
-    printf("nxt_unicode_block_%03x[%d]  nxt_aligned(64) = {",
+    printf("nxt_unicode_lower_case_block_%03x[%d]  nxt_aligned(64) = {",
            $block, $block_size);
 
     for my $c (0 .. $block_size - 1) {
@@ -61,8 +64,8 @@ for my $block (sort { $a <=> $b } keys %blocks) {
 
         my $n = $block * BLOCK_SIZE + $c;
 
-        if (exists $lowcase{$n}) {
-            printf(" 0x%05x,", $lowcase{$n});
+        if (exists $lower_case{$n}) {
+            printf(" 0x%05x,", $lower_case{$n});
 
         } else {
             #print " .......,";
@@ -74,11 +77,12 @@ for my $block (sort { $a <=> $b } keys %blocks) {
 }
 
 
-print "static const uint32_t  *nxt_unicode_blocks[]  nxt_aligned(64) = {\n";
+print "static const uint32_t  *nxt_unicode_lower_case_blocks[]" .
+      "  nxt_aligned(64) = {\n";
 
 for my $block (0 .. $max_block) {
     if (exists($blocks{$block})) {
-        printf("    nxt_unicode_block_%03x,\n", $block);
+        printf("    nxt_unicode_lower_case_block_%03x,\n", $block);
 
     } else {
         print  "    NULL,\n";
diff --git a/nxt/nxt_utf8.c b/nxt/nxt_utf8.c
index 73f356e2..5125f1dc 100644
--- a/nxt/nxt_utf8.c
+++ b/nxt/nxt_utf8.c
@@ -9,22 +9,16 @@
 #include <nxt_utf8.h>
 
 /*
- * The nxt_unicode_lowcase.h file is the auto-generated file from
- * the CaseFolding-6.3.0.txt file provided by Unicode, Inc.:
+ * The nxt_unicode_lower_case.h file is a file auto-generated from
+ * the UnicodeData.txt file version 6.3.0 provided by Unicode, Inc.:
  *
- *   ./nxt_unicode_lowcase.pl CaseFolding-6.3.0.txt
- *
- * This file should be copied to system specific nxt_unicode_SYSTEM_lowcase.h
- * file and utf8_file_name_test should be built with this file.
- * Then a correct system specific file should be generated:
- *
- *   ./build/utf8_file_name_test | ./nxt_unicode_lowcase.pl
+ *   ./nxt_unicode_lower_case.pl UnicodeData.txt
  *
  * Only common and simple case foldings are supported.  Full case foldings
- * is not supported.  Combined characters are also not supported.
+ * are not supported.  Combined characters are also not supported.
  */
 
-#include <nxt_unicode_lowcase.h>
+#include <nxt_unicode_lower_case.h>
 
 
 u_char *
@@ -184,9 +178,9 @@ nxt_utf8_casecmp(const u_char *start1, const u_char *start2, size_t len1,
 
     while (start1 < end1 && start2 < end2) {
 
-        u1 = nxt_utf8_lowcase(&start1, end1);
+        u1 = nxt_utf8_lower_case(&start1, end1);
 
-        u2 = nxt_utf8_lowcase(&start2, end2);
+        u2 = nxt_utf8_lower_case(&start2, end2);
 
         if (nxt_slow_path((u1 | u2) == 0xFFFFFFFF)) {
             return NXT_UTF8_SORT_INVALID;
@@ -204,7 +198,7 @@ nxt_utf8_casecmp(const u_char *start1, const u_char *start2, size_t len1,
 
 
 uint32_t
-nxt_utf8_lowcase(const u_char **start, const u_char *end)
+nxt_utf8_lower_case(const u_char **start, const u_char *end)
 {
     uint32_t        u;
     const uint32_t  *block;
@@ -214,13 +208,13 @@ nxt_utf8_lowcase(const u_char **start, const u_char *end)
     if (nxt_fast_path(u < 0x80)) {
         (*start)++;
 
-        return nxt_unicode_block_000[u];
+        return nxt_unicode_lower_case_block_000[u];
     }
 
     u = nxt_utf8_decode2(start, end);
 
-    if (u <= NXT_UNICODE_MAX_LOWCASE) {
-        block = nxt_unicode_blocks[u / NXT_UNICODE_BLOCK_SIZE];
+    if (u <= NXT_UNICODE_MAX_LOWER_CASE) {
+        block = nxt_unicode_lower_case_blocks[u / NXT_UNICODE_BLOCK_SIZE];
 
         if (block != NULL) {
             return block[u % NXT_UNICODE_BLOCK_SIZE];
diff --git a/nxt/nxt_utf8.h b/nxt/nxt_utf8.h
index 24e53ff5..e14d4435 100644
--- a/nxt/nxt_utf8.h
+++ b/nxt/nxt_utf8.h
@@ -21,7 +21,8 @@ NXT_EXPORT uint32_t nxt_utf8_decode(const u_char **start, const u_char *end);
 NXT_EXPORT uint32_t nxt_utf8_decode2(const u_char **start, const u_char *end);
 NXT_EXPORT nxt_int_t nxt_utf8_casecmp(const u_char *start1,
     const u_char *start2, size_t len1, size_t len2);
-NXT_EXPORT uint32_t nxt_utf8_lowcase(const u_char **start, const u_char *end);
+NXT_EXPORT uint32_t nxt_utf8_lower_case(const u_char **start,
+    const u_char *end);
 NXT_EXPORT ssize_t nxt_utf8_length(const u_char *p, size_t len);
 NXT_EXPORT nxt_bool_t nxt_utf8_is_valid(const u_char *p, size_t len);