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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: utstring - Common functions for strings and characters
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utstring")
/*******************************************************************************
*
* FUNCTION: acpi_ut_print_string
*
* PARAMETERS: string - Null terminated ASCII string
* max_length - Maximum output length. Used to constrain the
* length of strings during debug output only.
*
* RETURN: None
*
* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
* sequences.
*
******************************************************************************/
void acpi_ut_print_string(char *string, u16 max_length)
{
u32 i;
if (!string) {
acpi_os_printf("<\"NULL STRING PTR\">");
return;
}
acpi_os_printf("\"");
for (i = 0; (i < max_length) && string[i]; i++) {
/* Escape sequences */
switch (string[i]) {
case 0x07:
acpi_os_printf("\\a"); /* BELL */
break;
case 0x08:
acpi_os_printf("\\b"); /* BACKSPACE */
break;
case 0x0C:
acpi_os_printf("\\f"); /* FORMFEED */
break;
case 0x0A:
acpi_os_printf("\\n"); /* LINEFEED */
break;
case 0x0D:
acpi_os_printf("\\r"); /* CARRIAGE RETURN */
break;
case 0x09:
acpi_os_printf("\\t"); /* HORIZONTAL TAB */
break;
case 0x0B:
acpi_os_printf("\\v"); /* VERTICAL TAB */
break;
case '\'': /* Single Quote */
case '\"': /* Double Quote */
case '\\': /* Backslash */
acpi_os_printf("\\%c", (int)string[i]);
break;
default:
/* Check for printable character or hex escape */
if (isprint((int)string[i])) {
/* This is a normal character */
acpi_os_printf("%c", (int)string[i]);
} else {
/* All others will be Hex escapes */
acpi_os_printf("\\x%2.2X", (s32)string[i]);
}
break;
}
}
acpi_os_printf("\"");
if (i == max_length && string[i]) {
acpi_os_printf("...");
}
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_repair_name
*
* PARAMETERS: name - The ACPI name to be repaired
*
* RETURN: Repaired version of the name
*
* DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
* return the new name. NOTE: the Name parameter must reside in
* read/write memory, cannot be a const.
*
* An ACPI Name must consist of valid ACPI characters. We will repair the name
* if necessary because we don't want to abort because of this, but we want
* all namespace names to be printable. A warning message is appropriate.
*
* This issue came up because there are in fact machines that exhibit
* this problem, and we want to be able to enable ACPI support for them,
* even though there are a few bad names.
*
******************************************************************************/
void acpi_ut_repair_name(char *name)
{
u32 i;
u8 found_bad_char = FALSE;
u32 original_name;
ACPI_FUNCTION_NAME(ut_repair_name);
/*
* Special case for the root node. This can happen if we get an
* error during the execution of module-level code.
*/
if (ACPI_COMPARE_NAMESEG(name, ACPI_ROOT_PATHNAME)) {
return;
}
ACPI_COPY_NAMESEG(&original_name, name);
/* Check each character in the name */
for (i = 0; i < ACPI_NAMESEG_SIZE; i++) {
if (acpi_ut_valid_name_char(name[i], i)) {
continue;
}
/*
* Replace a bad character with something printable, yet technically
* still invalid. This prevents any collisions with existing "good"
* names in the namespace.
*/
name[i] = '*';
found_bad_char = TRUE;
}
if (found_bad_char) {
/* Report warning only if in strict mode or debug mode */
if (!acpi_gbl_enable_interpreter_slack) {
ACPI_WARNING((AE_INFO,
"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
original_name, name));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Invalid character(s) in name (0x%.8X), repaired: [%4.4s]",
original_name, name));
}
}
}
#if defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP
/*******************************************************************************
*
* FUNCTION: ut_convert_backslashes
*
* PARAMETERS: pathname - File pathname string to be converted
*
* RETURN: Modifies the input Pathname
*
* DESCRIPTION: Convert all backslashes (0x5C) to forward slashes (0x2F) within
* the entire input file pathname string.
*
******************************************************************************/
void ut_convert_backslashes(char *pathname)
{
if (!pathname) {
return;
}
while (*pathname) {
if (*pathname == '\\') {
*pathname = '/';
}
pathname++;
}
}
#endif
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