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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-number.cc147
1 files changed, 147 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-number.cc b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-number.cc
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index 00000000000..4f84d4ad5cd
--- /dev/null
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-number.cc
@@ -0,0 +1,147 @@
+/*
+ * Copyright © 2019 Ebrahim Byagowi
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ */
+
+#include "hb.hh"
+#include "hb-machinery.hh"
+#include "hb-number-parser.hh"
+
+#include <locale.h>
+#ifdef HAVE_XLOCALE_H
+#include <xlocale.h>
+#endif
+
+template<typename T, typename Func>
+static bool
+_parse_number (const char **pp, const char *end, T *pv,
+ bool whole_buffer, Func f)
+{
+ char buf[32];
+ unsigned int len = hb_min (ARRAY_LENGTH (buf) - 1,
+ (unsigned int) (end - *pp));
+ strncpy (buf, *pp, len);
+ buf[len] = '\0';
+
+ char *p = buf;
+ char *pend = p;
+
+ errno = 0;
+ *pv = f (p, &pend);
+ if (unlikely (errno || p == pend ||
+ /* Check if consumed whole buffer if is requested */
+ (whole_buffer && pend - p != end - *pp))) return false;
+
+ *pp += pend - p;
+ return true;
+}
+
+bool
+hb_parse_int (const char **pp, const char *end, int *pv, bool whole_buffer)
+{
+ return _parse_number<int> (pp, end, pv, whole_buffer,
+ [] (const char *p, char **end)
+ { return strtol (p, end, 10); });
+}
+
+bool
+hb_parse_uint (const char **pp, const char *end, unsigned int *pv,
+ bool whole_buffer, int base)
+{
+ return _parse_number<unsigned int> (pp, end, pv, whole_buffer,
+ [base] (const char *p, char **end)
+ { return strtoul (p, end, base); });
+}
+
+
+#if defined (HAVE_NEWLOCALE) && defined (HAVE_STRTOD_L)
+#define USE_XLOCALE 1
+#define HB_LOCALE_T locale_t
+#define HB_CREATE_LOCALE(locName) newlocale (LC_ALL_MASK, locName, nullptr)
+#define HB_FREE_LOCALE(loc) freelocale (loc)
+#elif defined(_MSC_VER)
+#define USE_XLOCALE 1
+#define HB_LOCALE_T _locale_t
+#define HB_CREATE_LOCALE(locName) _create_locale (LC_ALL, locName)
+#define HB_FREE_LOCALE(loc) _free_locale (loc)
+#define strtod_l(a, b, c) _strtod_l ((a), (b), (c))
+#endif
+
+#ifdef USE_XLOCALE
+
+#if HB_USE_ATEXIT
+static void free_static_C_locale ();
+#endif
+
+static struct hb_C_locale_lazy_loader_t : hb_lazy_loader_t<hb_remove_pointer<HB_LOCALE_T>,
+ hb_C_locale_lazy_loader_t>
+{
+ static HB_LOCALE_T create ()
+ {
+ HB_LOCALE_T C_locale = HB_CREATE_LOCALE ("C");
+
+#if HB_USE_ATEXIT
+ atexit (free_static_C_locale);
+#endif
+
+ return C_locale;
+ }
+ static void destroy (HB_LOCALE_T p)
+ {
+ HB_FREE_LOCALE (p);
+ }
+ static HB_LOCALE_T get_null ()
+ {
+ return nullptr;
+ }
+} static_C_locale;
+
+#if HB_USE_ATEXIT
+static
+void free_static_C_locale ()
+{
+ static_C_locale.free_instance ();
+}
+#endif
+
+static HB_LOCALE_T
+get_C_locale ()
+{
+ return static_C_locale.get_unconst ();
+}
+#endif /* USE_XLOCALE */
+
+bool
+hb_parse_double (const char **pp, const char *end, double *pv,
+ bool whole_buffer)
+{
+ return _parse_number<double> (pp, end, pv, whole_buffer,
+ [] (const char *p, char **end)
+ {
+#ifdef USE_XLOCALE
+ return strtod_l (p, end, get_C_locale ());
+#else
+ return strtod_rl (p, end);
+#endif
+ });
+}