1/* Test of vasnprintf() and asnprintf() functions. 2 Copyright (C) 2007 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17/* Written by Bruno Haible <bruno@clisp.org>, 2007. */ 18 19#include <config.h> 20 21#include "vasnprintf.h" 22 23#include <stdarg.h> 24#include <stdio.h> 25#include <stdlib.h> 26#include <string.h> 27 28#define ASSERT(expr) \ 29 do \ 30 { \ 31 if (!(expr)) \ 32 { \ 33 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ 34 abort (); \ 35 } \ 36 } \ 37 while (0) 38 39static char * 40my_asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...) 41{ 42 va_list args; 43 char *ret; 44 45 va_start (args, format); 46 ret = vasnprintf (resultbuf, lengthp, format, args); 47 va_end (args); 48 return ret; 49} 50 51static void 52test_vasnprintf () 53{ 54 char buf[8]; 55 int size; 56 57 for (size = 0; size <= 8; size++) 58 { 59 size_t length = size; 60 char *result = my_asnprintf (NULL, &length, "%d", 12345); 61 ASSERT (result != NULL); 62 ASSERT (strcmp (result, "12345") == 0); 63 ASSERT (length == 5); 64 free (result); 65 } 66 67 for (size = 0; size <= 8; size++) 68 { 69 size_t length; 70 char *result; 71 72 memcpy (buf, "DEADBEEF", 8); 73 length = size; 74 result = my_asnprintf (buf, &length, "%d", 12345); 75 ASSERT (result != NULL); 76 ASSERT (strcmp (result, "12345") == 0); 77 ASSERT (length == 5); 78 if (size < 6) 79 ASSERT (result != buf); 80 ASSERT (memcmp (buf + size, "DEADBEEF" + size, 8 - size) == 0); 81 if (result != buf) 82 free (result); 83 } 84} 85 86static void 87test_asnprintf () 88{ 89 char buf[8]; 90 int size; 91 92 for (size = 0; size <= 8; size++) 93 { 94 size_t length = size; 95 char *result = asnprintf (NULL, &length, "%d", 12345); 96 ASSERT (result != NULL); 97 ASSERT (strcmp (result, "12345") == 0); 98 ASSERT (length == 5); 99 free (result); 100 } 101 102 for (size = 0; size <= 8; size++) 103 { 104 size_t length; 105 char *result; 106 107 memcpy (buf, "DEADBEEF", 8); 108 length = size; 109 result = asnprintf (buf, &length, "%d", 12345); 110 ASSERT (result != NULL); 111 ASSERT (strcmp (result, "12345") == 0); 112 ASSERT (length == 5); 113 if (size < 6) 114 ASSERT (result != buf); 115 ASSERT (memcmp (buf + size, "DEADBEEF" + size, 8 - size) == 0); 116 if (result != buf) 117 free (result); 118 } 119} 120 121int 122main (int argc, char *argv[]) 123{ 124 test_vasnprintf (); 125 test_asnprintf (); 126 return 0; 127} 128