/* Copyright (c) 2003, 2023, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

// First include (the generated) my_config.h, to get correct platform defines.
#include "my_config.h"
#include <gtest/gtest.h>

#include <my_global.h>
#include <m_string.h>

namespace mysys_my_vsnprintf_unittest {

char buf[1024]; /* let's hope that's enough */

void test1(const char *res, const char *fmt, ...)
{
  va_list args;
  size_t len;
  va_start(args,fmt);
  len= my_vsnprintf(buf, sizeof(buf)-1, fmt, args);
  va_end(args);
  EXPECT_EQ(len, strlen(res));
  EXPECT_STREQ(buf, res);
}


TEST(Mysys, Vsnprintf)
{
  test1("Constant string",
        "Constant string");

  test1("Format specifier s works",
        "Format specifier s %s", "works");
  test1("Format specifier b works (mysql extension)",
        "Format specifier b %.5b (mysql extension)", "works!!!");
  test1("Format specifier c !",
        "Format specifier c %c", '!');
  test1("Format specifier d 1",
        "Format specifier d %d", 1);
  test1("Format specifier i 1",
        "Format specifier i %i", 1);
  test1("Format specifier u 2",
        "Format specifier u %u", 2);
  test1("Format specifier o 375",
        "Format specifier o %o", 0375);
  test1("Format specifier x a",
        "Format specifier x %x", 10);
  test1("Format specifier X B",
        "Format specifier X %X", 11);
  test1("Format specifier p 0x5",
        "Format specifier p %p", 5);
  test1("Format specifier f 3.141593",
        "Format specifier f %f", 3.1415926);
  test1("Format specifier g 3.1416",
        "Format specifier g %g", 3.1415926);

  test1("Flag '-' is ignored <   1>",
        "Flag '-' is ignored <%-4d>", 1);
  test1("Flag '0' works <0006>",
        "Flag '0' works <%04d>", 6);

  test1("Width is ignored for strings <x> <y>",
        "Width is ignored for strings <%04s> <%5s>", "x", "y");

  test1("Precision works for strings <abcde>",
        "Precision works for strings <%.5s>", "abcdef!");

  test1("Flag '`' (backtick) works: `abcd` `op``q` (mysql extension)",
        "Flag '`' (backtick) works: %`s %`.4s (mysql extension)",
        "abcd", "op`qrst");

  test1("Length modifiers work: 1 * -1 * 2 * 3",
        "Length modifiers work: %d * %ld * %lld * %zd", 1, -1L, 2LL, (size_t)3);

  test1("Length modifiers work: 1 * -1 * 2 * 3",
        "Length modifiers work: %i * %li * %lli * %zd", 1, -1L, 2LL, (size_t)3);

  test1("long long X: 123456789abcdef0",
        "long long X: %llx", 0x123456789abcdef0LL);

  test1("(null) pointer is fine",
        "%s pointer is fine", NULL);

  test1("Positional arguments work: on the dark side they are",
        "Positional arguments work: %3$s %1$s %2$s",
        "they", "are", "on the dark side");

  test1("Asterisk '*' as a width works: <    4>",
        "Asterisk '*' as a width works: <%*d>", 5, 4);

  test1("Asterisk '*' as a precision works: <qwerty>",
        "Asterisk '*' as a precision works: <%.*s>", 6, "qwertyuiop");

  test1("Positional arguments for a width: <    4>",
        "Positional arguments for a width: <%1$*2$d>", 4, 5);

  test1("Positional arguments for a precision: <qwerty>",
        "Positional arguments for a precision: <%1$.*2$s>", "qwertyuiop", 6);

  test1("Positional arguments and a width: <0000ab>",
        "Positional arguments and a width: <%1$06x>", 0xab);

  test1("Positional arguments octal: <7777>",
        "Positional arguments octal: <%1$o>", 07777);

  /* Can't use int arguments, as they may be different size from pointers */

  test1("Padding and %p <0x12> <0x034> <0x0000ab> <    0xcd>",
        "Padding and %%p <%04p> <%05p> <%08p> <%8p>",
        (void*) 0x12, (void*) 0x34, (void*) 0xab, (void*) 0xcd);

  test1("F with a width (ignored) and precision: <12.34568>",
        "F with a width (ignored) and precision: <%10.5f>", 12.3456789);
  test1("G with a width (ignored) and precision: <12.35>",
        "G with a width (ignored) and precision: <%10.5g>", 12.3456789);

  test1("Hello",
        "Hello");
  test1("Hello int, 1",
        "Hello int, %d", 1);
  test1("Hello int, -1",
        "Hello int, %d", -1);
  test1("Hello int, 1",
        "Hello int, %i", 1);
  test1("Hello int, -1",
        "Hello int, %i", -1);
  test1("Hello string 'I am a string'",
        "Hello string '%s'", "I am a string");
  test1("Hello hack hack hack hack hack hack hack 1",
        "Hello hack hack hack hack hack hack hack %d", 1);
  test1("Hello 1 hack 4",
        "Hello %d hack %d", 1, 4);
  test1("Hello 1 hack hack hack hack hack 4",
        "Hello %d hack hack hack hack hack %d", 1, 4);
  test1("Hello 'hack' hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh",
        "Hello '%s' hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh", "hack");
  test1("Hello hhhhhhhhhhhhhh 1 sssssssssssssss",
        "Hello hhhhhhhhhhhhhh %d sssssssssssssss", 1);
  test1("Hello 1",
        "Hello %u", 1);
  test1("Hello 4294967295",
        "Hello %u", -1);
  test1("Hex:   20  '    41'",
        "Hex:   %lx  '%6lx'", 32, 65);
  test1("conn 1 to: '(null)' user: '(null)' host: '(null)' ((null))",
        "conn %ld to: '%-.64s' user: '%-.32s' host: '%-.64s' (%-.64s)",
                   1L,     NULL,          NULL,          NULL,    NULL);
  test1("Hello string `I am a string`",
        "Hello string %`s", "I am a string");
  test1("Hello TEST",
        "Hello %05s", "TEST");
  test1("My `Q` test",
        "My %1$`-.1s test", "QQQQ");
  test1("My AAAA test done DDDD",
        "My %2$s test done %1$s", "DDDD", "AAAA");
  test1("My DDDD test CCCC, DDD",
        "My %1$s test %2$s, %1$-.3s", "DDDD", "CCCC");
  test1("My QQQQ test",
        "My %1$`-.4b test", "QQQQ");
  test1("My X test",
        "My %1$c test", 'X');
  test1("My <0000000010> test1 <   a> test2 <   A>",
        "My <%010d> test1 <%4x> test2 <%4X>", 10, 10, 10);
  test1("My <0000000010> test1 <   a> test2 <   a>",
        "My <%1$010d> test1 <%2$4x> test2 <%2$4x>", 10, 10);
  test1("My 00010 test",
        "My %1$*02$d test", 10, 5);
  test1("My `DDDD` test CCCC, `DDD`",
        "My %1$`s test %2$s, %1$`-.3s", "DDDD", "CCCC");

}

}