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annotate packages/language/c/libc/string/current/tests/strncpy1.c @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 6ed91473a1cd
children d2c90368aeef
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1 //=================================================================
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2 //
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3 // strncpy1.c
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4 //
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5 // Testcase for C library strncpy()
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6 //
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7 //=================================================================
208
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
115
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40 //=================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): ctarpy, jlarmour
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44 // Contributors:
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45 // Date: 2000-04-30
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46 // Description: Contains testcode for C library strncpy() function
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47 //
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48 //
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49 //####DESCRIPTIONEND####
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50
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51 // INCLUDES
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52
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53 #include <string.h>
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54 #include <cyg/infra/testcase.h>
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55
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56
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57 // FUNCTIONS
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58
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59 // Functions to avoid having to use libc strings
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60
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61 static int my_strlen(const char *s)
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62 {
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63 const char *ptr;
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64
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65 ptr = s;
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66 for ( ptr=s ; *ptr != '\0' ; ptr++ )
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67 ;
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68
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69 return (int)(ptr-s);
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70 } // my_strlen()
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71
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72
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73 static int my_strncmp(const char *s1, const char *s2, size_t n)
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74 {
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75 if (n==0)
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76 return 0;
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77
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78 while (n-- != 0 && *s1 == *s2)
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79 {
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80 if (n == 0 || *s1 == '\0' || *s2 == '\0')
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81 break;
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82 s1++;
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83 s2++;
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84 }
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85
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86 return (*s1 - *s2);
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87 } // my_strncmp()
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88
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89
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90 static int my_strcmp(const char *s1, const char *s2)
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91 {
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92 for ( ; *s1 == *s2 ; s1++,s2++ )
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93 {
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94 if ( *s1 == '\0' )
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95 break;
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96 } // for
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97
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98 return (*s1 - *s2);
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99 } // my_strcmp()
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100
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101
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102 static char *my_strcpy(char *s1, const char *s2)
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103 {
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104 while (*s2 != '\0') {
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105 *(s1++) = *(s2++);
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106 }
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107 *s1 = '\0';
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108
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109 return s1;
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110 } // my_strcpy()
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111
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112
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113 int
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114 main( int argc, char *argv[] )
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115 {
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116 char x[300];
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117 char y[300];
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118 char *ret;
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119
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120 CYG_TEST_INIT();
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121
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122 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
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123 "strncpy() function");
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124 CYG_TEST_INFO("This testcase provides simple basic tests");
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125
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126 // Check 1
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127 my_strcpy(x, "Nine rings for men doomed to die");
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128 ret = strncpy(y, "Nine rings for men doomed to die", my_strlen(x));
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129 CYG_TEST_PASS_FAIL( (my_strncmp(x, y, my_strlen(x)) == 0),
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130 "Simple copy" );
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131 // Check return value
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132 CYG_TEST_PASS_FAIL( (y == ret), "Simple copy return value" );
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133
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134
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135 // Check 2
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136 my_strcpy(x, "");
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137 my_strcpy(y, "Seven rings for the dwarves in their halls of stone");
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138 ret = strncpy(y, x, 1);
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139 CYG_TEST_PASS_FAIL( (my_strcmp(y, "") == 0), "Copy empty string" );
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140 // Check return value
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141 CYG_TEST_PASS_FAIL( (y == ret), "Copy empty string return value" );
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142
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143 // Check 3
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144 my_strcpy(x, "");
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145 my_strcpy(y, "Seven rings for the dwarves in their halls of stone");
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146 ret = strncpy(y, x, 0);
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147 if (my_strcmp(y, "Seven rings for the dwarves "
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148 "in their halls of stone") == 0)
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149 CYG_TEST_PASS("Copy 0 characters");
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150 else
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151 CYG_TEST_FAIL("Copy 0 characters");
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152 // Check return value
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153 CYG_TEST_PASS_FAIL( (y == ret), "Copy empty string return value" );
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154
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155 // CYG_TEST_NA("Testing is not applicable to this configuration");
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156
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157 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
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158 "strncpy() function");
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159
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160 } // main()
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161
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162 // EOF strncpy1.c