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annotate packages/language/c/libc/string/current/src/bsdstring.cxx @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

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Update all copyright banners to reflect FSF ownership; fix and improve licence text.
author jlarmour
date Thu, 29 Jan 2009 17:47:46 +0000
parents d2c90368aeef
children
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1 //===========================================================================
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2 //
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3 // bsdstring.cxx
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4 //
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5 // BSD string routines
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6 //
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7 //===========================================================================
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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 Free Software Foundation, 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
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //===========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): jlarmour
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43 // Contributors:
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44 // Date: 2001-11-27
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45 // Purpose: Provide string functions derived from BSD
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46 // Description:
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47 // Usage: #include <string.h>
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //===========================================================================
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52
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53 // CONFIGURATION
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54
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55 #include <pkgconf/libc_string.h> // Configuration header
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56
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57 // INCLUDES
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58
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59 #include <cyg/infra/cyg_type.h> // Common type definitions
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60 #include <cyg/infra/cyg_trac.h> // Tracing support
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61 #include <cyg/infra/cyg_ass.h> // Assertion support
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62 #include <string.h> // Header for this file
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63 #include <stddef.h> // size_t, NULL etc.
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64 #include <ctype.h> // toupper/tolower
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65
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66 // FUNCTIONS
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67
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68 /*---------------------------------------------------------------------*/
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69 /* strcasecmp */
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70
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71 __externC int
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72 __strcasecmp( const char *s1, const char *s2 )
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73 {
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74 CYG_REPORT_FUNCNAMETYPE( "strcasecmp", "returning %d" );
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75 CYG_REPORT_FUNCARG2( "s1=%08x, s2=%08x", s1, s2 );
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76
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77 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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78 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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79
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80 while (*s1 != '\0' && tolower(*s1) == tolower(*s2))
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81 {
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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 int ret = tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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87 CYG_REPORT_RETVAL( ret );
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88 return ret;
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89 }
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90
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91 __externC int
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92 strcasecmp( const char *s1, const char *s2 ) \
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93 CYGBLD_ATTRIB_WEAK_ALIAS(__strcasecmp);
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94
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95
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96 /*---------------------------------------------------------------------*/
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97 /* strncasecmp */
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98
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99 __externC int
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100 __strncasecmp( const char *s1, const char *s2, size_t n )
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101 {
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102 CYG_REPORT_FUNCNAMETYPE( "strncasecmp", "returning %d" );
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103 CYG_REPORT_FUNCARG3( "s1=%08x, s2=%08x, n=%d", s1, s2, n );
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104
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105 if (n == 0)
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106 {
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107 CYG_REPORT_RETVAL(0);
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108 return 0;
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109 }
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110
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111 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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112 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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113
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114 while (n-- != 0 && tolower(*s1) == tolower(*s2))
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115 {
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116 if (n == 0 || *s1 == '\0' || *s2 == '\0')
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117 break;
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118 s1++;
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119 s2++;
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120 }
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121
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122 int ret = tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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123 CYG_REPORT_RETVAL( ret );
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124 return ret;
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125 }
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126
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127 __externC int
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128 strncasecmp( const char *s1, const char *s2, size_t n ) \
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129 CYGBLD_ATTRIB_WEAK_ALIAS(__strncasecmp);
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130
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131 /*---------------------------------------------------------------------*/
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132 /* bcmp */
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133
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134 __externC int
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135 __bcmp( const void *s1, const void *s2, size_t n )
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136 {
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137 // Don't bother tracing - memcmp can do that
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138 return memcmp (s1, s2, n);
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139 }
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140
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141 __externC int
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142 bcmp( const void *s1, const void *s2, size_t n ) \
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143 CYGBLD_ATTRIB_WEAK_ALIAS(__bcmp);
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144
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145 /*---------------------------------------------------------------------*/
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146 /* bcopy */
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147
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148 __externC void
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149 __bcopy( const void *src, void *dest, size_t n )
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150 {
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151 // Don't bother tracing - memmove can do that
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152 memmove (dest, src, n);
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153 }
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154
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155 __externC void
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156 bcopy( const void *src, void *dest, size_t n ) \
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157 CYGBLD_ATTRIB_WEAK_ALIAS(__bcopy);
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158
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159 /*---------------------------------------------------------------------*/
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160 /* bzero */
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161
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162 __externC void
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163 __bzero( void *s, size_t n )
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164 {
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165 // Don't bother tracing - memset can do that
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166 memset( s, 0, n );
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167 }
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168
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169 __externC void
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170 bzero( void *s, size_t n ) CYGBLD_ATTRIB_WEAK_ALIAS(__bzero);
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171
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172 /*---------------------------------------------------------------------*/
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173 /* index */
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174
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175 __externC char *
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176 __index( const char *s, int c )
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177 {
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178 // Don't bother tracing - strchr can do that
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179 return strchr(s, c);
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180 }
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181
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182 __externC char *
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183 index( const char *s, int c ) CYGBLD_ATTRIB_WEAK_ALIAS(__index);
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184
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185 /*---------------------------------------------------------------------*/
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186 /* rindex */
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187
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188 __externC char *
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189 __rindex( const char *s, int c )
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190 {
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191 // Don't bother tracing - strrchr can do that
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192 return strrchr(s, c);
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193 }
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194
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195 __externC char *
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196 rindex( const char *s, int c ) CYGBLD_ATTRIB_WEAK_ALIAS(__rindex);
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197
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198 /*---------------------------------------------------------------------*/
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199 /* swab */
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200
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201 __externC void
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202 __swab( const void *from, void *to, size_t n )
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203 {
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204 const char *f = (const char *)from;
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205 char *t = (char *)to;
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206 size_t ptr;
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207
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208 CYG_REPORT_FUNCNAME( "swab" );
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209 CYG_REPORT_FUNCARG3( "from=%08x, to=%08x, n=%d", from, to, n );
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210
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211 if (n) {
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212 CYG_CHECK_DATA_PTR( from, "from is not a valid pointer!" );
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213 CYG_CHECK_DATA_PTR( to, "to is not a valid pointer!" );
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214 }
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215
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216 for (ptr = 1; ptr < n; ptr += 2)
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217 {
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218 char p = f[ptr];
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219 char q = f[ptr-1];
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220 t[ptr-1] = p;
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221 t[ptr ] = q;
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222 }
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223 if (ptr == n) /* I.e., if n is odd, */
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224 t[ptr-1] = '\0'; /* then pad with a NUL. */
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225
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226 CYG_REPORT_RETURN();
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227 }
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228
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229 __externC void
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230 swab( const void *from, void *to, size_t n ) \
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231 CYGBLD_ATTRIB_WEAK_ALIAS(__swab);
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232
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233 /*---------------------------------------------------------------------*/
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234 // EOF bsdstring.cxx