/******************************************************************************
 *
 * Module Name: ahasl - ASL operator decoding for acpihelp utility
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2020, Intel Corp.
 * All rights reserved.
 *
 * 2. License
 *
 * 2.1. This is your license from Intel Corp. under its intellectual property
 * rights. You may have additional license terms from the party that provided
 * you this software, covering your right to use that party's intellectual
 * property rights.
 *
 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
 * copy of the source code appearing in this file ("Covered Code") an
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
 * base code distributed originally by Intel ("Original Intel Code") to copy,
 * make derivatives, distribute, use and display any portion of the Covered
 * Code in any form, with the right to sublicense such rights; and
 *
 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
 * license (with the right to sublicense), under only those claims of Intel
 * patents that are infringed by the Original Intel Code, to make, use, sell,
 * offer to sell, and import the Covered Code and derivative works thereof
 * solely to the minimum extent necessary to exercise the above copyright
 * license, and in no event shall the patent license extend to any additions
 * to or modifications of the Original Intel Code. No other license or right
 * is granted directly or by implication, estoppel or otherwise;
 *
 * The above copyright and patent license is granted only if the following
 * conditions are met:
 *
 * 3. Conditions
 *
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification with rights to further distribute source must include
 * the above Copyright Notice, the above License, this list of Conditions,
 * and the following Disclaimer and Export Compliance provision. In addition,
 * Licensee must cause all Covered Code to which Licensee contributes to
 * contain a file documenting the changes Licensee made to create that Covered
 * Code and the date of any change. Licensee must include in that file the
 * documentation of any changes made by any predecessor Licensee. Licensee
 * must include a prominent statement that the modification is derived,
 * directly or indirectly, from Original Intel Code.
 *
 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification without rights to further distribute source must
 * include the following Disclaimer and Export Compliance provision in the
 * documentation and/or other materials provided with distribution. In
 * addition, Licensee may not authorize further sublicense of source of any
 * portion of the Covered Code, and must include terms to the effect that the
 * license from Licensee to its licensee is limited to the intellectual
 * property embodied in the software Licensee provides to its licensee, and
 * not to intellectual property embodied in modifications its licensee may
 * make.
 *
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
 * substantial portion of the Covered Code or modification must reproduce the
 * above Copyright Notice, and the following Disclaimer and Export Compliance
 * provision in the documentation and/or other materials provided with the
 * distribution.
 *
 * 3.4. Intel retains all right, title, and interest in and to the Original
 * Intel Code.
 *
 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
 * Intel shall be used in advertising or otherwise to promote the sale, use or
 * other dealings in products derived from or relating to the Covered Code
 * without prior written authorization from Intel.
 *
 * 4. Disclaimer and Export Compliance
 *
 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
 * PARTICULAR PURPOSE.
 *
 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
 * LIMITED REMEDY.
 *
 * 4.3. Licensee shall not export, either directly or indirectly, any of this
 * software or system incorporating such software without first obtaining any
 * required license or other approval from the U. S. Department of Commerce or
 * any other agency or department of the United States Government. In the
 * event Licensee exports any such software from the United States or
 * re-exports any such software from a foreign destination, Licensee shall
 * ensure that the distribution and export/re-export of the software is in
 * compliance with all laws, regulations, orders, or other restrictions of the
 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 * any of its subsidiaries will export/re-export any technical data, process,
 * software, or service, directly or indirectly, to any country for which the
 * United States government or any agency thereof requires an export license,
 * other governmental approval, or letter of assurance, without first obtaining
 * such license, approval or letter.
 *
 *****************************************************************************
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * following license:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 *****************************************************************************/

#include "acpihelp.h"


/* Local prototypes */

static void
AhDisplayAslOperator (
    const AH_ASL_OPERATOR   *Op);

static void
AhDisplayOperatorKeywords (
    const AH_ASL_OPERATOR   *Op);

static void
AhDisplayAslKeyword (
    const AH_ASL_KEYWORD    *Op);


/*******************************************************************************
 *
 * FUNCTION:    AhFindAslKeywords (entry point for ASL keyword search)
 *
 * PARAMETERS:  Name                - Name or prefix for an ASL keyword.
 *                                    NULL means "find all"
 *
 * RETURN:      None
 *
 * DESCRIPTION: Find all ASL keywords that match the input Name or name
 *              prefix.
 *
 ******************************************************************************/

void
AhFindAslKeywords (
    char                    *Name)
{
    const AH_ASL_KEYWORD    *Keyword;
    BOOLEAN                 Found = FALSE;


    AcpiUtStrupr (Name);

    for (Keyword = Gbl_AslKeywordInfo; Keyword->Name; Keyword++)
    {
        if (!Name || (Name[0] == '*'))
        {
            AhDisplayAslKeyword (Keyword);
            Found = TRUE;
            continue;
        }

        /* Upper case the operator name before substring compare */

        strcpy (Gbl_Buffer, Keyword->Name);
        AcpiUtStrupr (Gbl_Buffer);

        if (strstr (Gbl_Buffer, Name) == Gbl_Buffer)
        {
            AhDisplayAslKeyword (Keyword);
            Found = TRUE;
        }
    }

    if (!Found)
    {
        printf ("%s, no matching ASL keywords\n", Name);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AhDisplayAslKeyword
 *
 * PARAMETERS:  Op                  - Pointer to ASL keyword with syntax info
 *
 * RETURN:      None
 *
 * DESCRIPTION: Format and display syntax info for an ASL keyword. Splits
 *              long lines appropriately for reading.
 *
 ******************************************************************************/

static void
AhDisplayAslKeyword (
    const AH_ASL_KEYWORD    *Op)
{

    /* ASL keyword name and description */

    printf ("%22s: %s\n", Op->Name, Op->Description);
    if (!Op->KeywordList)
    {
        return;
    }

    /* List of actual keywords */

    AhPrintOneField (24, 0, AH_MAX_ASL_LINE_LENGTH, Op->KeywordList);
    printf ("\n");
}


/*******************************************************************************
 *
 * FUNCTION:    AhFindAslAndAmlOperators
 *
 * PARAMETERS:  Name                - Name or prefix for an ASL operator.
 *                                    NULL means "find all"
 *
 * RETURN:      None
 *
 * DESCRIPTION: Find all ASL operators that match the input Name or name
 *              prefix. Also displays the AML information if only one entry
 *              matches.
 *
 ******************************************************************************/

void
AhFindAslAndAmlOperators (
    char                    *Name)
{
    UINT32                  MatchCount;


    MatchCount = AhFindAslOperators (Name);
    if (MatchCount == 1)
    {
        AhFindAmlOpcode (Name);
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AhFindAslOperators (entry point for ASL operator search)
 *
 * PARAMETERS:  Name                - Name or prefix for an ASL operator.
 *                                    NULL means "find all"
 *
 * RETURN:      Number of operators that matched the name prefix.
 *
 * DESCRIPTION: Find all ASL operators that match the input Name or name
 *              prefix.
 *
 ******************************************************************************/

UINT32
AhFindAslOperators (
    char                    *Name)
{
    const AH_ASL_OPERATOR   *Operator;
    BOOLEAN                 MatchCount = 0;


    AcpiUtStrupr (Name);

    /* Find/display all names that match the input name prefix */

    for (Operator = Gbl_AslOperatorInfo; Operator->Name; Operator++)
    {
        if (!Name || (Name[0] == '*'))
        {
            AhDisplayAslOperator (Operator);
            MatchCount++;
            continue;
        }

        /* Upper case the operator name before substring compare */

        strcpy (Gbl_Buffer, Operator->Name);
        AcpiUtStrupr (Gbl_Buffer);

        if (strstr (Gbl_Buffer, Name) == Gbl_Buffer)
        {
            AhDisplayAslOperator (Operator);
            MatchCount++;
        }
    }

    if (!MatchCount)
    {
        printf ("%s, no matching ASL operators\n", Name);
    }

    return (MatchCount);
}


/*******************************************************************************
 *
 * FUNCTION:    AhDisplayAslOperator
 *
 * PARAMETERS:  Op                  - Pointer to ASL operator with syntax info
 *
 * RETURN:      None
 *
 * DESCRIPTION: Format and display syntax info for an ASL operator. Splits
 *              long lines appropriately for reading.
 *
 ******************************************************************************/

static void
AhDisplayAslOperator (
    const AH_ASL_OPERATOR   *Op)
{

    /* ASL operator name and description */

    printf ("%16s: %s\n", Op->Name, Op->Description);
    if (!Op->Syntax)
    {
        return;
    }

    /* Syntax for the operator */

    AhPrintOneField (18, 0, AH_MAX_ASL_LINE_LENGTH, Op->Syntax);
    printf ("\n");

    AhDisplayOperatorKeywords (Op);
    printf ("\n");
}


/*******************************************************************************
 *
 * FUNCTION:    AhDisplayOperatorKeywords
 *
 * PARAMETERS:  Op                  - Pointer to ASL keyword with syntax info
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display any/all keywords that are associated with the ASL
 *              operator.
 *
 ******************************************************************************/

static void
AhDisplayOperatorKeywords (
    const AH_ASL_OPERATOR   *Op)
{
    char                    *Token;
    char                    *Separators = "(){}, ";
    BOOLEAN                 FirstKeyword = TRUE;


    if (!Op || !Op->Syntax)
    {
        return;
    }

    /*
     * Find all parameters that have the word "keyword" within, and then
     * display the info about that keyword
     */
    strcpy (Gbl_LineBuffer, Op->Syntax);
    Token = strtok (Gbl_LineBuffer, Separators);
    while (Token)
    {
        if (strstr (Token, "Keyword"))
        {
            if (FirstKeyword)
            {
                printf ("\n");
                FirstKeyword = FALSE;
            }

            /* Found a keyword, display keyword information */

            AhFindAslKeywords (Token);
        }

        Token = strtok (NULL, Separators);
    }
}