Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 172 insertions, 0 deletions

diff --git a/xpcom/string/nsTextFormatter.h b/xpcom/string/nsTextFormatter.h
new file mode 100644
index 0000000000..f571043da2
--- /dev/null
+++ b/xpcom/string/nsTextFormatter.h
@@ -0,0 +1,172 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This code was copied from xpcom/ds/nsTextFormatter r1.3
+ *           Memory model and Frozen linkage changes only.
+ *                           -- Prasad <prasad@medhas.org>
+ */
+
+#ifndef nsTextFormatter_h___
+#define nsTextFormatter_h___
+
+/*
+ ** API for PR printf like routines. Supports the following formats
+ **	%d - decimal
+ **	%u - unsigned decimal
+ **	%x - unsigned hex
+ **	%X - unsigned uppercase hex
+ **	%o - unsigned octal
+ **	%hd, %hu, %hx, %hX, %ho - 16-bit versions of above
+ **	%ld, %lu, %lx, %lX, %lo - 32-bit versions of above
+ **	%lld, %llu, %llx, %llX, %llo - 64 bit versions of above
+ **	%s - utf8 string
+ **	%S - char16_t string
+ **	%c - character
+ **	%p - pointer (deals with machine dependent pointer size)
+ **	%f - float
+ **	%g - float
+ */
+#include <stdio.h>
+#include <stdarg.h>
+#include "nscore.h"
+#include "nsString.h"
+#include "mozilla/Span.h"
+
+#ifdef XPCOM_GLUE
+#  error \
+      "nsTextFormatter is not available in the standalone glue due to NSPR dependencies."
+#endif
+
+class nsTextFormatter {
+ public:
+  /*
+   * sprintf into a fixed size buffer. Guarantees that the buffer is null
+   * terminated. Returns the length of the written output, NOT including the
+   * null terminator, or (uint32_t)-1 if an error occurs.
+   */
+  template <typename... T>
+  static uint32_t snprintf(char16_t* aOut, uint32_t aOutLen,
+                           const char16_t* aFmt, T... aArgs) {
+    BoxedValue values[] = {BoxedValue(aArgs)...};
+    return vsnprintf(aOut, aOutLen, aFmt,
+                     mozilla::Span(values, sizeof...(aArgs)));
+  }
+
+  /*
+   * sprintf into an existing nsAString, overwriting any contents it already
+   * has. Infallible.
+   */
+  template <typename... T>
+  static void ssprintf(nsAString& aOut, const char16_t* aFmt, T... aArgs) {
+    BoxedValue values[] = {BoxedValue(aArgs)...};
+    vssprintf(aOut, aFmt, mozilla::Span(values, sizeof...(aArgs)));
+  }
+
+ private:
+  enum ArgumentKind {
+    INT,
+    UINT,
+    POINTER,
+    DOUBLE,
+    STRING,
+    STRING16,
+    INTPOINTER,
+  };
+
+  union ValueUnion {
+    int64_t mInt;
+    uint64_t mUInt;
+    void const* mPtr;
+    double mDouble;
+    char const* mString;
+    char16_t const* mString16;
+    int* mIntPtr;
+  };
+
+  struct BoxedValue {
+    ArgumentKind mKind;
+    ValueUnion mValue;
+
+    explicit BoxedValue(int aArg) : mKind(INT) { mValue.mInt = aArg; }
+
+    explicit BoxedValue(unsigned int aArg) : mKind(UINT) {
+      mValue.mUInt = aArg;
+    }
+
+    explicit BoxedValue(long aArg) : mKind(INT) { mValue.mInt = aArg; }
+
+    explicit BoxedValue(unsigned long aArg) : mKind(UINT) {
+      mValue.mUInt = aArg;
+    }
+
+    explicit BoxedValue(long long aArg) : mKind(INT) { mValue.mInt = aArg; }
+
+    explicit BoxedValue(unsigned long long aArg) : mKind(UINT) {
+      mValue.mUInt = aArg;
+    }
+
+    explicit BoxedValue(const void* aArg) : mKind(POINTER) {
+      mValue.mPtr = aArg;
+    }
+
+    explicit BoxedValue(double aArg) : mKind(DOUBLE) { mValue.mDouble = aArg; }
+
+    explicit BoxedValue(const char* aArg) : mKind(STRING) {
+      mValue.mString = aArg;
+    }
+
+    explicit BoxedValue(const char16_t* aArg) : mKind(STRING16) {
+      mValue.mString16 = aArg;
+    }
+
+#if defined(MOZ_USE_CHAR16_WRAPPER)
+    explicit BoxedValue(const char16ptr_t aArg) : mKind(STRING16) {
+      mValue.mString16 = aArg;
+    }
+
+#endif
+
+    explicit BoxedValue(int* aArg) : mKind(INTPOINTER) {
+      mValue.mIntPtr = aArg;
+    }
+
+    bool IntCompatible() const { return mKind == INT || mKind == UINT; }
+
+    bool PointerCompatible() const {
+      return mKind == POINTER || mKind == STRING || mKind == STRING16 ||
+             mKind == INTPOINTER;
+    }
+  };
+
+  struct SprintfStateStr;
+
+  static int fill2(SprintfStateStr* aState, const char16_t* aSrc, int aSrcLen,
+                   int aWidth, int aFlags);
+  static int fill_n(SprintfStateStr* aState, const char16_t* aSrc, int aSrcLen,
+                    int aWidth, int aPrec, int aFlags);
+  static int cvt_ll(SprintfStateStr* aState, uint64_t aNum, int aWidth,
+                    int aPrec, int aRadix, int aFlags, const char16_t* aHexStr);
+  static int cvt_f(SprintfStateStr* aState, double aDouble, int aWidth,
+                   int aPrec, const char16_t aType, int aFlags);
+  static int cvt_S(SprintfStateStr* aState, const char16_t* aStr, int aWidth,
+                   int aPrec, int aFlags);
+  static int cvt_s(SprintfStateStr* aState, const char* aStr, int aWidth,
+                   int aPrec, int aFlags);
+  static int dosprintf(SprintfStateStr* aState, const char16_t* aFmt,
+                       mozilla::Span<BoxedValue> aValues);
+  static int StringStuff(SprintfStateStr* aState, const char16_t* aStr,
+                         uint32_t aLen);
+  static int LimitStuff(SprintfStateStr* aState, const char16_t* aStr,
+                        uint32_t aLen);
+  static uint32_t vsnprintf(char16_t* aOut, uint32_t aOutLen,
+                            const char16_t* aFmt,
+                            mozilla::Span<BoxedValue> aValues);
+  static void vssprintf(nsAString& aOut, const char16_t* aFmt,
+                        mozilla::Span<BoxedValue> aValues);
+};
+
+#endif /* nsTextFormatter_h___ */