| 1 | /******************************************************************************* |
| 2 | * |
| 3 | * Module Name: utnonansi - Non-ansi C library functions |
| 4 | * |
| 5 | ******************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | |
| 47 | |
| 48 | #define _COMPONENT ACPI_UTILITIES |
| 49 | ACPI_MODULE_NAME ("utnonansi" ) |
| 50 | |
| 51 | /* |
| 52 | * Non-ANSI C library functions - strlwr, strupr, stricmp, and "safe" |
| 53 | * string functions. |
| 54 | */ |
| 55 | |
| 56 | /******************************************************************************* |
| 57 | * |
| 58 | * FUNCTION: AcpiUtStrlwr (strlwr) |
| 59 | * |
| 60 | * PARAMETERS: SrcString - The source string to convert |
| 61 | * |
| 62 | * RETURN: None |
| 63 | * |
| 64 | * DESCRIPTION: Convert a string to lowercase |
| 65 | * |
| 66 | ******************************************************************************/ |
| 67 | |
| 68 | void |
| 69 | AcpiUtStrlwr ( |
| 70 | char *SrcString) |
| 71 | { |
| 72 | char *String; |
| 73 | |
| 74 | |
| 75 | ACPI_FUNCTION_ENTRY (); |
| 76 | |
| 77 | |
| 78 | if (!SrcString) |
| 79 | { |
| 80 | return; |
| 81 | } |
| 82 | |
| 83 | /* Walk entire string, lowercasing the letters */ |
| 84 | |
| 85 | for (String = SrcString; *String; String++) |
| 86 | { |
| 87 | *String = (char) tolower ((int) *String); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | |
| 92 | /******************************************************************************* |
| 93 | * |
| 94 | * FUNCTION: AcpiUtStrupr (strupr) |
| 95 | * |
| 96 | * PARAMETERS: SrcString - The source string to convert |
| 97 | * |
| 98 | * RETURN: None |
| 99 | * |
| 100 | * DESCRIPTION: Convert a string to uppercase |
| 101 | * |
| 102 | ******************************************************************************/ |
| 103 | |
| 104 | void |
| 105 | AcpiUtStrupr ( |
| 106 | char *SrcString) |
| 107 | { |
| 108 | char *String; |
| 109 | |
| 110 | |
| 111 | ACPI_FUNCTION_ENTRY (); |
| 112 | |
| 113 | |
| 114 | if (!SrcString) |
| 115 | { |
| 116 | return; |
| 117 | } |
| 118 | |
| 119 | /* Walk entire string, uppercasing the letters */ |
| 120 | |
| 121 | for (String = SrcString; *String; String++) |
| 122 | { |
| 123 | *String = (char) toupper ((int) *String); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | |
| 128 | /****************************************************************************** |
| 129 | * |
| 130 | * FUNCTION: AcpiUtStricmp (stricmp) |
| 131 | * |
| 132 | * PARAMETERS: String1 - first string to compare |
| 133 | * String2 - second string to compare |
| 134 | * |
| 135 | * RETURN: int that signifies string relationship. Zero means strings |
| 136 | * are equal. |
| 137 | * |
| 138 | * DESCRIPTION: Case-insensitive string compare. Implementation of the |
| 139 | * non-ANSI stricmp function. |
| 140 | * |
| 141 | ******************************************************************************/ |
| 142 | |
| 143 | int |
| 144 | AcpiUtStricmp ( |
| 145 | char *String1, |
| 146 | char *String2) |
| 147 | { |
| 148 | int c1; |
| 149 | int c2; |
| 150 | |
| 151 | |
| 152 | do |
| 153 | { |
| 154 | c1 = tolower ((int) *String1); |
| 155 | c2 = tolower ((int) *String2); |
| 156 | |
| 157 | String1++; |
| 158 | String2++; |
| 159 | } |
| 160 | while ((c1 == c2) && (c1)); |
| 161 | |
| 162 | return (c1 - c2); |
| 163 | } |
| 164 | |
| 165 | |
| 166 | #if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) |
| 167 | /******************************************************************************* |
| 168 | * |
| 169 | * FUNCTION: AcpiUtSafeStrcpy, AcpiUtSafeStrcat, AcpiUtSafeStrncat |
| 170 | * |
| 171 | * PARAMETERS: Adds a "DestSize" parameter to each of the standard string |
| 172 | * functions. This is the size of the Destination buffer. |
| 173 | * |
| 174 | * RETURN: TRUE if the operation would overflow the destination buffer. |
| 175 | * |
| 176 | * DESCRIPTION: Safe versions of standard Clib string functions. Ensure that |
| 177 | * the result of the operation will not overflow the output string |
| 178 | * buffer. |
| 179 | * |
| 180 | * NOTE: These functions are typically only helpful for processing |
| 181 | * user input and command lines. For most ACPICA code, the |
| 182 | * required buffer length is precisely calculated before buffer |
| 183 | * allocation, so the use of these functions is unnecessary. |
| 184 | * |
| 185 | ******************************************************************************/ |
| 186 | |
| 187 | BOOLEAN |
| 188 | AcpiUtSafeStrcpy ( |
| 189 | char *Dest, |
| 190 | ACPI_SIZE DestSize, |
| 191 | char *Source) |
| 192 | { |
| 193 | |
| 194 | if (strlen (Source) >= DestSize) |
| 195 | { |
| 196 | return (TRUE); |
| 197 | } |
| 198 | |
| 199 | strcpy (Dest, Source); |
| 200 | return (FALSE); |
| 201 | } |
| 202 | |
| 203 | BOOLEAN |
| 204 | AcpiUtSafeStrcat ( |
| 205 | char *Dest, |
| 206 | ACPI_SIZE DestSize, |
| 207 | char *Source) |
| 208 | { |
| 209 | |
| 210 | if ((strlen (Dest) + strlen (Source)) >= DestSize) |
| 211 | { |
| 212 | return (TRUE); |
| 213 | } |
| 214 | |
| 215 | strcat (Dest, Source); |
| 216 | return (FALSE); |
| 217 | } |
| 218 | |
| 219 | BOOLEAN |
| 220 | AcpiUtSafeStrncat ( |
| 221 | char *Dest, |
| 222 | ACPI_SIZE DestSize, |
| 223 | char *Source, |
| 224 | ACPI_SIZE MaxTransferLength) |
| 225 | { |
| 226 | ACPI_SIZE ActualTransferLength; |
| 227 | |
| 228 | |
| 229 | ActualTransferLength = ACPI_MIN (MaxTransferLength, strlen (Source)); |
| 230 | |
| 231 | if ((strlen (Dest) + ActualTransferLength) >= DestSize) |
| 232 | { |
| 233 | return (TRUE); |
| 234 | } |
| 235 | |
| 236 | strncat (Dest, Source, MaxTransferLength); |
| 237 | return (FALSE); |
| 238 | } |
| 239 | #endif |
| 240 | |