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annotate packages/language/c/libc/string/current/src/bsdstring.cxx @ 197:51b34619b677

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Merge from eCos master repository on 2001-11-30-11:22:06-GMT
author jlarmour
date Fri, 30 Nov 2001 13:09:25 +0000
parents
children e0c0827131d1
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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 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //===========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): jlarmour
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35 // Contributors:
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36 // Date: 2001-11-27
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37 // Purpose: Provide string functions derived from BSD
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38 // Description:
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39 // Usage: #include <string.h>
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40 //
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41 //####DESCRIPTIONEND####
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42 //
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43 //===========================================================================
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44
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45 // CONFIGURATION
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46
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47 #include <pkgconf/libc_string.h> // Configuration header
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48
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49 // INCLUDES
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50
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51 #include <cyg/infra/cyg_type.h> // Common type definitions
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52 #include <cyg/infra/cyg_trac.h> // Tracing support
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53 #include <cyg/infra/cyg_ass.h> // Assertion support
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54 #include <string.h> // Header for this file
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55 #include <stddef.h> // size_t, NULL etc.
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56 #include <ctype.h> // toupper/tolower
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57
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58 // FUNCTIONS
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59
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60 /*---------------------------------------------------------------------*/
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61 /* strcasecmp */
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62
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63 __externC int
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64 __strcasecmp( const char *s1, const char *s2 )
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65 {
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66 CYG_REPORT_FUNCNAMETYPE( "strcasecmp", "returning %d" );
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67 CYG_REPORT_FUNCARG2( "s1=%08x, s2=%08x", s1, s2 );
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68
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69 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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70 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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71
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72 while (*s1 != '\0' && tolower(*s1) == tolower(*s2))
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73 {
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74 s1++;
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75 s2++;
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76 }
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77
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78 int ret = tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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79 CYG_REPORT_RETVAL( ret );
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80 return ret;
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81 }
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82
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83 __externC int
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84 strcasecmp( const char *s1, const char *s2 ) \
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85 CYGBLD_ATTRIB_WEAK_ALIAS(__strcasecmp);
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86
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87
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88 /*---------------------------------------------------------------------*/
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89 /* strncasecmp */
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90
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91 __externC int
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92 __strncasecmp( const char *s1, const char *s2, size_t n )
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93 {
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94 CYG_REPORT_FUNCNAMETYPE( "strncasecmp", "returning %d" );
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95 CYG_REPORT_FUNCARG3( "s1=%08x, s2=%08x, n=%d", s1, s2, n );
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96
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97 if (n == 0)
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98 {
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99 CYG_REPORT_RETVAL(0);
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100 return 0;
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101 }
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102
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103 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
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104 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
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105
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106 while (n-- != 0 && tolower(*s1) == tolower(*s2))
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107 {
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108 if (n == 0 || *s1 == '\0' || *s2 == '\0')
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109 break;
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110 s1++;
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111 s2++;
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112 }
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113
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114 int ret = tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
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115 CYG_REPORT_RETVAL( ret );
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116 return ret;
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117 }
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118
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119 __externC int
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120 strncasecmp( const char *s1, const char *s2, size_t n ) \
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121 CYGBLD_ATTRIB_WEAK_ALIAS(__strncasecmp);
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122
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123 /*---------------------------------------------------------------------*/
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124 /* bcmp */
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125
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126 __externC int
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127 __bcmp( const void *s1, const void *s2, size_t n )
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128 {
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129 // Don't bother tracing - memcmp can do that
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130 return memcmp (s1, s2, n);
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131 }
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132
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133 __externC int
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134 bcmp( const void *s1, const void *s2, size_t n ) \
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135 CYGBLD_ATTRIB_WEAK_ALIAS(__bcmp);
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136
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137 /*---------------------------------------------------------------------*/
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138 /* bcopy */
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139
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140 __externC void
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141 __bcopy( const void *src, void *dest, size_t n )
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142 {
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143 // Don't bother tracing - memmove can do that
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144 memmove (dest, src, n);
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145 }
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146
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147 __externC void
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148 bcopy( const void *src, void *dest, size_t n ) \
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149 CYGBLD_ATTRIB_WEAK_ALIAS(__bcopy);
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150
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151 /*---------------------------------------------------------------------*/
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152 /* bzero */
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153
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154 __externC void
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155 __bzero( void *s, size_t n )
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156 {
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157 // Don't bother tracing - memset can do that
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158 memset( s, 0, n );
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159 }
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160
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161 __externC void
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162 bzero( void *s, size_t n ) CYGBLD_ATTRIB_WEAK_ALIAS(__bzero);
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163
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164 /*---------------------------------------------------------------------*/
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165 /* index */
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166
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167 __externC char *
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168 __index( const char *s, int c )
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169 {
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170 // Don't bother tracing - strchr can do that
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171 return strchr(s, c);
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172 }
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173
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174 __externC char *
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175 index( const char *s, int c ) CYGBLD_ATTRIB_WEAK_ALIAS(__index);
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176
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177 /*---------------------------------------------------------------------*/
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178 /* rindex */
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179
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180 __externC char *
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181 __rindex( const char *s, int c )
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182 {
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183 // Don't bother tracing - strrchr can do that
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184 return strrchr(s, c);
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185 }
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186
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187 __externC char *
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188 rindex( const char *s, int c ) CYGBLD_ATTRIB_WEAK_ALIAS(__rindex);
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189
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190 /*---------------------------------------------------------------------*/
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191 /* swab */
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192
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193 __externC void
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194 __swab( const void *from, void *to, size_t n )
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195 {
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196 const char *f = (const char *)from;
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197 char *t = (char *)to;
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198 size_t ptr;
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199
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200 CYG_REPORT_FUNCNAME( "swab" );
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201 CYG_REPORT_FUNCARG3( "from=%08x, to=%08x, n=%d", from, to, n );
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202
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203 if (n) {
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204 CYG_CHECK_DATA_PTR( from, "from is not a valid pointer!" );
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205 CYG_CHECK_DATA_PTR( to, "to is not a valid pointer!" );
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206 }
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207
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208 for (ptr = 1; ptr < n; ptr += 2)
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209 {
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210 char p = f[ptr];
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211 char q = f[ptr-1];
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212 t[ptr-1] = p;
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213 t[ptr ] = q;
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214 }
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215 if (ptr == n) /* I.e., if n is odd, */
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216 t[ptr-1] = '\0'; /* then pad with a NUL. */
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217
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218 CYG_REPORT_RETURN();
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219 }
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220
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221 __externC void
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222 swab( const void *from, void *to, size_t n ) \
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223 CYGBLD_ATTRIB_WEAK_ALIAS(__swab);
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224
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225 /*---------------------------------------------------------------------*/
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226 // EOF bsdstring.cxx