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1 /*
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2 * Copyright (C) 1999-2003 Hewlett-Packard Co.
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3 * Contributed by Stephane Eranian <eranian@hpl.hp.com>
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4 *
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5 * This file is part of the ELILO, the EFI Linux boot loader.
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6 *
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7 * ELILO is free software; you can redistribute it and/or modify
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8 * it under the terms of the GNU General Public License as published by
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9 * the Free Software Foundation; either version 2, or (at your option)
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10 * any later version.
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11 *
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12 * ELILO is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 * GNU General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU General Public License
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18 * along with ELILO; see the file COPYING. If not, write to the Free
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19 * Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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20 * 02111-1307, USA.
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21 *
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22 * Please check out the elilo.txt for complete documentation on how
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23 * to use this program.
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24 */
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25
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26 #include <efi.h>
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27 #include <efilib.h>
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28
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29 //#define CHAR_NULL (CHAR16)'\0'
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30
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31 CHAR16 *
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32 StrChr(IN const CHAR16 *s, IN const CHAR16 c)
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33 {
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34 for(; *s != c; ++s) if (*s == CHAR_NULL) return NULL;
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35
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36 return (CHAR16 *)s;
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37 }
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38
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39 CHAR16 *
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40 StrnCpy(OUT CHAR16 *dst, IN const CHAR16 *src, IN UINTN size)
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41 {
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42 CHAR16 *res = dst;
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43
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44 while (size && size-- && (*dst++ = *src++) != CHAR_NULL);
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45 /*
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46 * does the null padding
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47 */
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48 while (size && size-- > 0) *dst++ = CHAR_NULL;
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49
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50 return res;
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51 }
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52
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53 CHAR8 *
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54 StrnXCpy(OUT CHAR8 *dst, IN const CHAR16 *src, IN UINTN size)
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55 {
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56 CHAR8 *res = dst;
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57
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58 while (size && size-- && (*dst++ = (CHAR8)*src++) != '\0');
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59 /*
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60 * does the null padding
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61 */
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62 while (size && size-- > 0) *dst++ = '\0';
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63
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64 return res;
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65 }
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66
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67 VOID
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68 U2ascii(CHAR16 *in, CHAR8 *out, UINTN maxlen)
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69 {
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70 while(maxlen-- > 1 && (*out++ = *in++));
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71 *out = '\0';
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72 }
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73
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74 CHAR8 *
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75 strncpya(OUT CHAR8 *dst, IN const CHAR8 *src, IN UINTN size)
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76 {
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77 CHAR8 *res = dst;
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78
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79 while (size && size-- && (*dst++ = *src++) != '\0');
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80 /*
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81 * does the null padding
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82 */
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83 while (size && size-- > 0) *dst++ = '\0';
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84
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85 return res;
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86 }
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87
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88 CHAR8 *
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89 strcpya(CHAR8 *dst, const CHAR8 *src)
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90 {
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91 CHAR8 *tmp = dst;
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92
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93 while (*src) {
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94 *(dst++) = *(src++);
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95 }
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96 *dst = 0;
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97
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98 return tmp;
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99
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100 }
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101
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102 CHAR8 *
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103 strchra(IN const CHAR8 *s, IN const CHAR8 c)
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104 {
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105 for(; *s != c; ++s)
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106 if (*s == 0) return NULL;
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107 return (CHAR8 *)s;
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108 }
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109
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110 CHAR8 *
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111 strcata(IN CHAR8 *dst,IN CHAR8 *src)
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112 {
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113 return strcpya(dst+strlena(dst), src);
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114 }
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115
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116 CHAR8 *
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117 strrchra(IN const CHAR8 *s, const INTN c)
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118 {
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119 CHAR8 *found, *p, ch = (CHAR8)c;
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120
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121 /* Since strchr is fast, we use it rather than the obvious loop. */
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122
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123 if (ch == '\0') return strchra(s, '\0');
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124
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125 found = NULL;
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126 while ((p = strchra(s, ch)) != NULL)
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127 {
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128 found = p;
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129 s = p + 1;
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130 }
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131
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132 return (CHAR8 *) found;
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133 }
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134
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135 CHAR8 *
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136 strtok_simple(CHAR8 *in, CHAR8 c)
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137 {
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138 static CHAR8 *last;
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139 CHAR8 *tmp;
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140
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141 if (in == NULL) in = last;
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142
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143 if (in == NULL) return NULL;
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144
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145 if (*in == c) in++;
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146
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147 tmp = strchra(in, c);
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148 if (tmp) {
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149 *tmp = '\0';
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150 last = tmp+1;
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151 } else {
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152 last = NULL;
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153 }
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154 return in;
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155 }
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156
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157 VOID
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158 ascii2U(CHAR8 *in, CHAR16 *out, UINTN maxlen)
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159 {
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160 while(maxlen-- > 1 && (*out++ = *in++));
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161
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162 *out = (CHAR16)0;
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163 }
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164
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165
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