keycodes.c

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Author : Dan Nicholson
Date : 2009-04-08 07:46:25
Hash : 6a84a34d
Message : Remove all non-public API from XKBcommon.h header The noble intention was to expose all the new API and new generic types in the split out kbproto headers through XKBcommon.h. It turns out that would be a massive amount of work in the server. Someday, but first just wedging in XkbCompileKeymap* would be good. Most of the API is in new internal xkb*.h headers. In order to allow the XKBcommon.h header to be used from the server, we can't pull in other headers from kbproto since the server has its own copies. However, types that are different (XkbDescRec, XkbAction) still have Xkbc equivalents here, and I think they should be used in the server.
src/xkbcomp/keycodes.c
/************************************************************
 Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.

 Permission to use, copy, modify, and distribute this
 software and its documentation for any purpose and without
 fee is hereby granted, provided that the above copyright
 notice appear in all copies and that both that copyright
 notice and this permission notice appear in supporting
 documentation, and that the name of Silicon Graphics not be
 used in advertising or publicity pertaining to distribution
 of the software without specific prior written permission.
 Silicon Graphics makes no representation about the suitability
 of this software for any purpose. It is provided "as is"
 without any express or implied warranty.

 SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
 GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
 THE USE OR PERFORMANCE OF THIS SOFTWARE.

 ********************************************************/

#include "xkbcomp.h"
#include "xkballoc.h"
#include "xkbmisc.h"
#include "tokens.h"
#include "expr.h"
#include "keycodes.h"
#include "misc.h"
#include "alias.h"

char *
longText(unsigned long val)
{
    char buf[4];

    LongToKeyName(val, buf);
    return XkbcKeyNameText(buf);
}

/***====================================================================***/

void
LongToKeyName(unsigned long val, char *name)
{
    name[0] = ((val >> 24) & 0xff);
    name[1] = ((val >> 16) & 0xff);
    name[2] = ((val >> 8) & 0xff);
    name[3] = (val & 0xff);
    return;
}

/***====================================================================***/

typedef struct _IndicatorNameInfo
{
    CommonInfo defs;
    int ndx;
    Atom name;
    Bool virtual;
} IndicatorNameInfo;

typedef struct _KeyNamesInfo
{
    char *name;     /* e.g. evdev+aliases(qwerty) */
    int errorCount;
    unsigned fileID;
    unsigned merge;
    int computedMin; /* lowest keycode stored */
    int computedMax; /* highest keycode stored */
    int explicitMin;
    int explicitMax;
    int effectiveMin;
    int effectiveMax;
    unsigned long names[XkbMaxLegalKeyCode + 1]; /* 4-letter name of key, keycode is the index */
    unsigned files[XkbMaxLegalKeyCode + 1];
    unsigned char has_alt_forms[XkbMaxLegalKeyCode + 1];
    IndicatorNameInfo *leds;
    AliasInfo *aliases;
} KeyNamesInfo;

static void HandleKeycodesFile(XkbFile * file,
                               XkbcDescPtr xkb,
                               unsigned merge,
                               KeyNamesInfo * info);

static void
InitIndicatorNameInfo(IndicatorNameInfo * ii, KeyNamesInfo * info)
{
    ii->defs.defined = 0;
    ii->defs.merge = info->merge;
    ii->defs.fileID = info->fileID;
    ii->defs.next = NULL;
    ii->ndx = 0;
    ii->name = None;
    ii->virtual = False;
    return;
}

static void
ClearIndicatorNameInfo(IndicatorNameInfo * ii, KeyNamesInfo * info)
{
    if (ii == info->leds)
    {
        ClearCommonInfo(&ii->defs);
        info->leds = NULL;
    }
    return;
}

static IndicatorNameInfo *
NextIndicatorName(KeyNamesInfo * info)
{
    IndicatorNameInfo *ii;

    ii = uTypedAlloc(IndicatorNameInfo);
    if (ii)
    {
        InitIndicatorNameInfo(ii, info);
        info->leds = (IndicatorNameInfo *) AddCommonInfo(&info->leds->defs,
                                                         (CommonInfo *) ii);
    }
    return ii;
}

static IndicatorNameInfo *
FindIndicatorByIndex(KeyNamesInfo * info, int ndx)
{
    IndicatorNameInfo *old;

    for (old = info->leds; old != NULL;
         old = (IndicatorNameInfo *) old->defs.next)
    {
        if (old->ndx == ndx)
            return old;
    }
    return NULL;
}

static IndicatorNameInfo *
FindIndicatorByName(KeyNamesInfo * info, Atom name)
{
    IndicatorNameInfo *old;

    for (old = info->leds; old != NULL;
         old = (IndicatorNameInfo *) old->defs.next)
    {
        if (old->name == name)
            return old;
    }
    return NULL;
}

static Bool
AddIndicatorName(KeyNamesInfo * info, IndicatorNameInfo * new)
{
    IndicatorNameInfo *old;
    Bool replace;
    const char *action;

    replace = (new->defs.merge == MergeReplace) ||
        (new->defs.merge == MergeOverride);
    old = FindIndicatorByName(info, new->name);
    if (old)
    {
        if (((old->defs.fileID == new->defs.fileID) && (warningLevel > 0))
            || (warningLevel > 9))
        {
            WARN("Multiple indicators named %s\n", XkbcAtomText(new->name));
            if (old->ndx == new->ndx)
            {
                if (old->virtual != new->virtual)
                {
                    if (replace)
                        old->virtual = new->virtual;
                    action = "Using %s instead of %s\n";
                }
                else
                {
                    action = "Identical definitions ignored\n";
                }
                ACTION(action, (old->virtual ? "virtual" : "real"),
                        (old->virtual ? "real" : "virtual"));
                return True;
            }
            else
            {
                if (replace)
                    action = "Ignoring %d, using %d\n";
                else
                    action = "Using %d, ignoring %d\n";
                ACTION(action, old->ndx, new->ndx);
            }
            if (replace)
            {
                if (info->leds == old)
                    info->leds = (IndicatorNameInfo *) old->defs.next;
                else
                {
                    IndicatorNameInfo *tmp;
                    tmp = info->leds;
                    for (; tmp != NULL;
                         tmp = (IndicatorNameInfo *) tmp->defs.next)
                    {
                        if (tmp->defs.next == (CommonInfo *) old)
                        {
                            tmp->defs.next = old->defs.next;
                            break;
                        }
                    }
                }
                uFree(old);
            }
        }
    }
    old = FindIndicatorByIndex(info, new->ndx);
    if (old)
    {
        if (((old->defs.fileID == new->defs.fileID) && (warningLevel > 0))
            || (warningLevel > 9))
        {
            WARN("Multiple names for indicator %d\n", new->ndx);
            if ((old->name == new->name) && (old->virtual == new->virtual))
                action = "Identical definitions ignored\n";
            else
            {
                const char *oldType, *newType;
                Atom using, ignoring;
                if (old->virtual)
                    oldType = "virtual indicator";
                else
                    oldType = "real indicator";
                if (new->virtual)
                    newType = "virtual indicator";
                else
                    newType = "real indicator";
                if (replace)
                {
                    using = new->name;
                    ignoring = old->name;
                }
                else
                {
                    using = old->name;
                    ignoring = new->name;
                }
                ACTION("Using %s %s, ignoring %s %s\n",
                        oldType, XkbcAtomText(using),
                        newType, XkbcAtomText(ignoring));
            }
        }
        if (replace)
        {
            old->name = new->name;
            old->virtual = new->virtual;
        }
        return True;
    }
    old = new;
    new = NextIndicatorName(info);
    if (!new)
    {
        WSGO("Couldn't allocate name for indicator %d\n", new->ndx);
        ACTION("Ignored\n");
        return False;
    }
    new->name = old->name;
    new->ndx = old->ndx;
    new->virtual = old->virtual;
    return True;
}

static void
ClearKeyNamesInfo(KeyNamesInfo * info)
{
    if (info->name != NULL)
        uFree(info->name);
    info->name = NULL;
    info->computedMax = info->explicitMax = info->explicitMin = -1;
    info->computedMin = 256;
    info->effectiveMin = 8;
    info->effectiveMax = 255;
    bzero((char *) info->names, sizeof(info->names));
    bzero((char *) info->files, sizeof(info->files));
    bzero((char *) info->has_alt_forms, sizeof(info->has_alt_forms));
    if (info->leds)
        ClearIndicatorNameInfo(info->leds, info);
    if (info->aliases)
        ClearAliases(&info->aliases);
    return;
}

static void
InitKeyNamesInfo(KeyNamesInfo * info)
{
    info->name = NULL;
    info->leds = NULL;
    info->aliases = NULL;
    ClearKeyNamesInfo(info);
    info->errorCount = 0;
    return;
}

static int
FindKeyByLong(KeyNamesInfo * info, unsigned long name)
{
    register int i;

    for (i = info->effectiveMin; i <= info->effectiveMax; i++)
    {
        if (info->names[i] == name)
            return i;
    }
    return 0;
}

/**
 * Store the name of the key as a long in the info struct under the given
 * keycode. If the same keys is referred to twice, print a warning.
 * Note that the key's name is stored as a long, the keycode is the index.
 */
static Bool
AddKeyName(KeyNamesInfo * info,
           int kc,
           char *name, unsigned merge, unsigned fileID, Bool reportCollisions)
{
    int old;
    unsigned long lval;

    if ((kc < info->effectiveMin) || (kc > info->effectiveMax))
    {
        ERROR("Illegal keycode %d for name <%s>\n", kc, name);
        ACTION("Must be in the range %d-%d inclusive\n",
                info->effectiveMin, info->effectiveMax);
        return False;
    }
    if (kc < info->computedMin)
        info->computedMin = kc;
    if (kc > info->computedMax)
        info->computedMax = kc;
    lval = KeyNameToLong(name);

    if (reportCollisions)
    {
        reportCollisions = ((warningLevel > 7) ||
                            ((warningLevel > 0)
                             && (fileID == info->files[kc])));
    }

    if (info->names[kc] != 0)
    {
        char buf[6];

        LongToKeyName(info->names[kc], buf);
        buf[4] = '\0';
        if (info->names[kc] == lval)
        {
            if (info->has_alt_forms[kc] || (merge == MergeAltForm))
            {
                info->has_alt_forms[kc] = True;
            }
            else if (reportCollisions)
            {
                WARN("Multiple identical key name definitions\n");
                ACTION("Later occurences of \"<%s> = %d\" ignored\n",
                        buf, kc);
            }
            return True;
        }
        if (merge == MergeAugment)
        {
            if (reportCollisions)
            {
                WARN("Multiple names for keycode %d\n", kc);
                ACTION("Using <%s>, ignoring <%s>\n", buf, name);
            }
            return True;
        }
        else
        {
            if (reportCollisions)
            {
                WARN("Multiple names for keycode %d\n", kc);
                ACTION("Using <%s>, ignoring <%s>\n", name, buf);
            }
            info->names[kc] = 0;
            info->files[kc] = 0;
        }
    }
    old = FindKeyByLong(info, lval);
    if ((old != 0) && (old != kc))
    {
        if (merge == MergeOverride)
        {
            info->names[old] = 0;
            info->files[old] = 0;
            info->has_alt_forms[old] = True;
            if (reportCollisions)
            {
                WARN("Key name <%s> assigned to multiple keys\n", name);
                ACTION("Using %d, ignoring %d\n", kc, old);
            }
        }
        else if (merge != MergeAltForm)
        {
            if ((reportCollisions) && (warningLevel > 3))
            {
                WARN("Key name <%s> assigned to multiple keys\n", name);
                ACTION("Using %d, ignoring %d\n", old, kc);
                ACTION
                    ("Use 'alternate' keyword to assign the same name to multiple keys\n");
            }
            return True;
        }
        else
        {
            info->has_alt_forms[old] = True;
        }
    }
    info->names[kc] = lval;
    info->files[kc] = fileID;
    info->has_alt_forms[kc] = (merge == MergeAltForm);
    return True;
}

/***====================================================================***/

static void
MergeIncludedKeycodes(KeyNamesInfo * into, KeyNamesInfo * from,
                      unsigned merge)
{
    register int i;
    char buf[5];

    if (from->errorCount > 0)
    {
        into->errorCount += from->errorCount;
        return;
    }
    if (into->name == NULL)
    {
        into->name = from->name;
        from->name = NULL;
    }
    for (i = from->computedMin; i <= from->computedMax; i++)
    {
        unsigned thisMerge;
        if (from->names[i] == 0)
            continue;
        LongToKeyName(from->names[i], buf);
        buf[4] = '\0';
        if (from->has_alt_forms[i])
            thisMerge = MergeAltForm;
        else
            thisMerge = merge;
        if (!AddKeyName(into, i, buf, thisMerge, from->fileID, False))
            into->errorCount++;
    }
    if (from->leds)
    {
        IndicatorNameInfo *led, *next;
        for (led = from->leds; led != NULL; led = next)
        {
            if (merge != MergeDefault)
                led->defs.merge = merge;
            if (!AddIndicatorName(into, led))
                into->errorCount++;
            next = (IndicatorNameInfo *) led->defs.next;
        }
    }
    if (!MergeAliases(&into->aliases, &from->aliases, merge))
        into->errorCount++;
    if (from->explicitMin > 0)
    {
        if ((into->explicitMin < 0)
            || (into->explicitMin > from->explicitMin))
            into->effectiveMin = into->explicitMin = from->explicitMin;
    }
    if (from->explicitMax > 0)
    {
        if ((into->explicitMax < 0)
            || (into->explicitMax < from->explicitMax))
            into->effectiveMax = into->explicitMax = from->explicitMax;
    }
    return;
}

/**
 * Handle the given include statement (e.g. "include "evdev+aliases(qwerty)").
 *
 * @param stmt The include statement from the keymap file.
 * @param xkb Unused for all but the xkb->flags.
 * @param info Struct to store the key info in.
 */
static Bool
HandleIncludeKeycodes(IncludeStmt * stmt, XkbcDescPtr xkb, KeyNamesInfo * info)
{
    unsigned newMerge;
    XkbFile *rtrn;
    KeyNamesInfo included = {NULL};
    Bool haveSelf;

    haveSelf = False;
    if ((stmt->file == NULL) && (stmt->map == NULL))
    {
        haveSelf = True;
        included = *info;
        bzero(info, sizeof(KeyNamesInfo));
    }
    else if (strcmp(stmt->file, "computed") == 0)
    {
        xkb->flags |= AutoKeyNames;
        info->explicitMin = XkbMinLegalKeyCode;
        info->explicitMax = XkbMaxLegalKeyCode;
        return (info->errorCount == 0);
    } /* parse file, store returned info in the xkb struct */
    else if (ProcessIncludeFile(stmt, XkmKeyNamesIndex, &rtrn, &newMerge))
    {
        InitKeyNamesInfo(&included);
        HandleKeycodesFile(rtrn, xkb, MergeOverride, &included);
        if (stmt->stmt != NULL)
        {
            if (included.name != NULL)
                uFree(included.name);
            included.name = stmt->stmt;
            stmt->stmt = NULL;
        }
    }
    else
    {
        info->errorCount += 10; /* XXX: why 10?? */
        return False;
    }
    /* Do we have more than one include statement? */
    if ((stmt->next != NULL) && (included.errorCount < 1))
    {
        IncludeStmt *next;
        unsigned op;
        KeyNamesInfo next_incl;

        for (next = stmt->next; next != NULL; next = next->next)
        {
            if ((next->file == NULL) && (next->map == NULL))
            {
                haveSelf = True;
                MergeIncludedKeycodes(&included, info, next->merge);
                ClearKeyNamesInfo(info);
            }
            else if (ProcessIncludeFile(next, XkmKeyNamesIndex, &rtrn, &op))
            {
                InitKeyNamesInfo(&next_incl);
                HandleKeycodesFile(rtrn, xkb, MergeOverride, &next_incl);
                MergeIncludedKeycodes(&included, &next_incl, op);
                ClearKeyNamesInfo(&next_incl);
            }
            else
            {
                info->errorCount += 10; /* XXX: Why 10?? */
                return False;
            }
        }
    }
    if (haveSelf)
        *info = included;
    else
    {
        MergeIncludedKeycodes(info, &included, newMerge);
        ClearKeyNamesInfo(&included);
    }
    return (info->errorCount == 0);
}

/**
 * Parse the given statement and store the output in the info struct.
 * e.g. <ESC> = 9
 */
static int
HandleKeycodeDef(KeycodeDef * stmt, unsigned merge, KeyNamesInfo * info)
{
    int code;
    ExprResult result;

    if (!ExprResolveInteger(stmt->value, &result, NULL, NULL))
    {
        ACTION("No value keycode assigned to name <%s>\n", stmt->name);
        return 0;
    }
    code = result.ival;
    if ((code < info->effectiveMin) || (code > info->effectiveMax))
    {
        ERROR("Illegal keycode %d for name <%s>\n", code, stmt->name);
        ACTION("Must be in the range %d-%d inclusive\n",
                info->effectiveMin, info->effectiveMax);
        return 0;
    }
    if (stmt->merge != MergeDefault)
    {
        if (stmt->merge == MergeReplace)
            merge = MergeOverride;
        else
            merge = stmt->merge;
    }
    return AddKeyName(info, code, stmt->name, merge, info->fileID, True);
}

#define	MIN_KEYCODE_DEF		0
#define	MAX_KEYCODE_DEF		1

/**
 * Handle the minimum/maximum statement of the xkb file.
 * Sets explicitMin/Max and effectiveMin/Max of the info struct.
 *
 * @return 1 on success, 0 otherwise.
 */
static int
HandleKeyNameVar(VarDef * stmt, KeyNamesInfo * info)
{
    ExprResult tmp, field;
    ExprDef *arrayNdx;
    int which;

    if (ExprResolveLhs(stmt->name, &tmp, &field, &arrayNdx) == 0)
        return 0;               /* internal error, already reported */

    if (tmp.str != NULL)
    {
        ERROR("Unknown element %s encountered\n", tmp.str);
        ACTION("Default for field %s ignored\n", field.str);
        return 0;
    }
    if (uStrCaseCmp(field.str, "minimum") == 0)
        which = MIN_KEYCODE_DEF;
    else if (uStrCaseCmp(field.str, "maximum") == 0)
        which = MAX_KEYCODE_DEF;
    else
    {
        ERROR("Unknown field encountered\n");
        ACTION("Assigment to field %s ignored\n", field.str);
        return 0;
    }
    if (arrayNdx != NULL)
    {
        ERROR("The %s setting is not an array\n", field.str);
        ACTION("Illegal array reference ignored\n");
        return 0;
    }

    if (ExprResolveInteger(stmt->value, &tmp, NULL, NULL) == 0)
    {
        ACTION("Assignment to field %s ignored\n", field.str);
        return 0;
    }
    if ((tmp.ival < XkbMinLegalKeyCode) || (tmp.ival > XkbMaxLegalKeyCode))
    {
        ERROR
            ("Illegal keycode %d (must be in the range %d-%d inclusive)\n",
             tmp.ival, XkbMinLegalKeyCode, XkbMaxLegalKeyCode);
        ACTION("Value of \"%s\" not changed\n", field.str);
        return 0;
    }
    if (which == MIN_KEYCODE_DEF)
    {
        if ((info->explicitMax > 0) && (info->explicitMax < tmp.ival))
        {
            ERROR
                ("Minimum key code (%d) must be <= maximum key code (%d)\n",
                 tmp.ival, info->explicitMax);
            ACTION("Minimum key code value not changed\n");
            return 0;
        }
        if ((info->computedMax > 0) && (info->computedMin < tmp.ival))
        {
            ERROR
                ("Minimum key code (%d) must be <= lowest defined key (%d)\n",
                 tmp.ival, info->computedMin);
            ACTION("Minimum key code value not changed\n");
            return 0;
        }
        info->explicitMin = tmp.ival;
        info->effectiveMin = tmp.ival;
    }
    if (which == MAX_KEYCODE_DEF)
    {
        if ((info->explicitMin > 0) && (info->explicitMin > tmp.ival))
        {
            ERROR("Maximum code (%d) must be >= minimum key code (%d)\n",
                   tmp.ival, info->explicitMin);
            ACTION("Maximum code value not changed\n");
            return 0;
        }
        if ((info->computedMax > 0) && (info->computedMax > tmp.ival))
        {
            ERROR
                ("Maximum code (%d) must be >= highest defined key (%d)\n",
                 tmp.ival, info->computedMax);
            ACTION("Maximum code value not changed\n");
            return 0;
        }
        info->explicitMax = tmp.ival;
        info->effectiveMax = tmp.ival;
    }
    return 1;
}

static int
HandleIndicatorNameDef(IndicatorNameDef * def,
                       unsigned merge, KeyNamesInfo * info)
{
    IndicatorNameInfo ii;
    ExprResult tmp;

    if ((def->ndx < 1) || (def->ndx > XkbNumIndicators))
    {
        info->errorCount++;
        ERROR("Name specified for illegal indicator index %d\n", def->ndx);
        ACTION("Ignored\n");
        return False;
    }
    InitIndicatorNameInfo(&ii, info);
    ii.ndx = def->ndx;
    if (!ExprResolveString(def->name, &tmp, NULL, NULL))
    {
        char buf[20];
        snprintf(buf, sizeof(buf), "%d", def->ndx);
        info->errorCount++;
        return ReportBadType("indicator", "name", buf, "string");
    }
    ii.name = XkbcInternAtom(tmp.str, False);
    ii.virtual = def->virtual;
    if (!AddIndicatorName(info, &ii))
        return False;
    return True;
}

/**
 * Handle the xkb_keycodes section of a xkb file.
 * All information about parsed keys is stored in the info struct.
 *
 * Such a section may have include statements, in which case this function is
 * semi-recursive (it calls HandleIncludeKeycodes, which may call
 * HandleKeycodesFile again).
 *
 * @param file The input file (parsed xkb_keycodes section)
 * @param xkb Necessary to pass down, may have flags changed.
 * @param merge Merge strategy (MergeOverride, etc.)
 * @param info Struct to contain the fully parsed key information.
 */
static void
HandleKeycodesFile(XkbFile * file,
                   XkbcDescPtr xkb, unsigned merge, KeyNamesInfo * info)
{
    ParseCommon *stmt;

    info->name = _XkbDupString(file->name);
    stmt = file->defs;
    while (stmt)
    {
        switch (stmt->stmtType)
        {
        case StmtInclude:    /* e.g. include "evdev+aliases(qwerty)" */
            if (!HandleIncludeKeycodes((IncludeStmt *) stmt, xkb, info))
                info->errorCount++;
            break;
        case StmtKeycodeDef: /* e.g. <ESC> = 9; */
            if (!HandleKeycodeDef((KeycodeDef *) stmt, merge, info))
                info->errorCount++;
            break;
        case StmtKeyAliasDef: /* e.g. alias <MENU> = <COMP>; */
            if (!HandleAliasDef((KeyAliasDef *) stmt,
                                merge, info->fileID, &info->aliases))
                info->errorCount++;
            break;
        case StmtVarDef: /* e.g. minimum, maximum */
            if (!HandleKeyNameVar((VarDef *) stmt, info))
                info->errorCount++;
            break;
        case StmtIndicatorNameDef: /* e.g. indicator 1 = "Caps Lock"; */
            if (!HandleIndicatorNameDef((IndicatorNameDef *) stmt,
                                        merge, info))
            {
                info->errorCount++;
            }
            break;
        case StmtInterpDef:
        case StmtVModDef:
            ERROR("Keycode files may define key and indicator names only\n");
            ACTION("Ignoring definition of %s\n",
                    ((stmt->stmtType ==
                      StmtInterpDef) ? "a symbol interpretation" :
                     "virtual modifiers"));
            info->errorCount++;
            break;
        default:
            WSGO("Unexpected statement type %d in HandleKeycodesFile\n",
                  stmt->stmtType);
            break;
        }
        stmt = stmt->next;
        if (info->errorCount > 10)
        {
#ifdef NOISY
            ERROR("Too many errors\n");
#endif
            ACTION("Abandoning keycodes file \"%s\"\n", file->topName);
            break;
        }
    }
    return;
}

/**
 * Compile the xkb_keycodes section, parse it's output, return the results.
 *
 * @param file The parsed XKB file (may have include statements requiring
 * further parsing)
 * @param result The effective keycodes, as gathered from the file.
 * @param merge Merge strategy.
 *
 * @return True on success, False otherwise.
 */
Bool
CompileKeycodes(XkbFile *file, XkbcDescPtr xkb, unsigned merge)
{
    KeyNamesInfo info; /* contains all the info after parsing */

    InitKeyNamesInfo(&info);
    HandleKeycodesFile(file, xkb, merge, &info);

    /* all the keys are now stored in info */

    if (info.errorCount == 0)
    {
        if (info.explicitMin > 0) /* if "minimum" statement was present */
            xkb->min_key_code = info.effectiveMin;
        else
            xkb->min_key_code = info.computedMin;
        if (info.explicitMax > 0) /* if "maximum" statement was present */
            xkb->max_key_code = info.effectiveMax;
        else
            xkb->max_key_code = info.computedMax;
        if (XkbcAllocNames(xkb, XkbKeyNamesMask | XkbIndicatorNamesMask, 0, 0)
                == Success)
        {
            register int i;
            xkb->names->keycodes = XkbcInternAtom(info.name, False);
            uDEBUG2(1, "key range: %d..%d\n", xkb->min_key_code,
                    xkb->max_key_code);
            for (i = info.computedMin; i <= info.computedMax; i++)
            {
                LongToKeyName(info.names[i], xkb->names->keys[i].name);
                uDEBUG2(2, "key %d = %s\n", i,
                        XkbcKeyNameText(xkb->names->keys[i].name));
            }
        }
        else
        {
            WSGO("Cannot create XkbNamesRec in CompileKeycodes\n");
            return False;
        }
        if (info.leds)
        {
            IndicatorNameInfo *ii;
            if (XkbcAllocIndicatorMaps(xkb) != Success)
            {
                WSGO("Couldn't allocate IndicatorRec in CompileKeycodes\n");
                ACTION("Physical indicators not set\n");
            }
            for (ii = info.leds; ii != NULL;
                 ii = (IndicatorNameInfo *) ii->defs.next)
            {
                xkb->names->indicators[ii->ndx - 1] =
                    XkbcInternAtom(XkbcAtomGetString(ii->name), False);
                if (xkb->indicators != NULL)
                {
                    register unsigned bit;
                    bit = 1 << (ii->ndx - 1);
                    if (ii->virtual)
                        xkb->indicators->phys_indicators &= ~bit;
                    else
                        xkb->indicators->phys_indicators |= bit;
                }
            }
        }
        if (info.aliases)
            ApplyAliases(xkb, False, &info.aliases);
        return True;
    }
    ClearKeyNamesInfo(&info);
    return False;
}
kc3-lang/libxkbcommon/src/xkbcomp/keycodes.c

Commit

kc3-lang/libxkbcommon /src/xkbcomp/keycodes.c
