/*

 * fontconfig/src/fcname.c

 *

 * Copyright © 2000 Keith Packard

 *

 * Permission to use, copy, modify, distribute, and sell this software and its

 * documentation for any purpose is hereby granted without fee, 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 the author(s) not be used in

 * advertising or publicity pertaining to distribution of the software without

 * specific, written prior permission.  The authors make no

 * representations about the suitability of this software for any purpose.  It

 * is provided "as is" without express or implied warranty.

 *

 * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

 * EVENT SHALL THE AUTHOR(S) 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 "fcint.h"

#include <ctype.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

static const FcObjectType FcObjects[] = {

#define FC_OBJECT(NAME, Type, Cmp) { FC_##NAME, Type },

#include "fcobjs.h"

#undef FC_OBJECT

};

#define NUM_OBJECT_TYPES ((int)(sizeof FcObjects / sizeof FcObjects[0]))

static const FcObjectType *

FcObjectFindById (FcObject object)

{

    if (1 <= object && object <= NUM_OBJECT_TYPES)

  return &FcObjects[object - 1];

    return FcObjectLookupOtherTypeById (object);

}

FcBool

FcNameRegisterObjectTypes (const FcObjectType *types, int ntypes)

{

    /* Deprecated. */

    return FcFalse;

}

FcBool

FcNameUnregisterObjectTypes (const FcObjectType *types, int ntypes)

{

    /* Deprecated. */

    return FcFalse;

}

const FcObjectType *

FcNameGetObjectType (const char *object)

{

    int id = FcObjectLookupBuiltinIdByName (object);

    if (!id)

  return FcObjectLookupOtherTypeByName (object);

    return &FcObjects[id - 1];

}

FcBool

FcObjectValidType (FcObject object, FcType type)

{

    const FcObjectType *t = FcObjectFindById (object);

    if (t) {

  switch ((int)t->type) {

  case FcTypeUnknown:

      return FcTrue;

  case FcTypeDouble:

  case FcTypeInteger:

      if (type == FcTypeDouble || type == FcTypeInteger)

    return FcTrue;

      break;

  case FcTypeLangSet:

      if (type == FcTypeLangSet || type == FcTypeString)

    return FcTrue;

      break;

  case FcTypeRange:

      if (type == FcTypeRange ||

          type == FcTypeDouble ||

          type == FcTypeInteger)

    return FcTrue;

      break;

  default:

      if (type == t->type)

    return FcTrue;

      break;

  }

  return FcFalse;

    }

    return FcTrue;

}

FcObject

FcObjectFromName (const char *name)

{

    return FcObjectLookupIdByName (name);

}

FcObjectSet *

FcObjectGetSet (void)

{

    int          i;

    FcObjectSet *os = NULL;

    os = FcObjectSetCreate();

    for (i = 0; i < NUM_OBJECT_TYPES; i++)

  FcObjectSetAdd (os, FcObjects[i].object);

    return os;

}

const char *

FcObjectName (FcObject object)

{

    const FcObjectType *o = FcObjectFindById (object);

    if (o)

  return o->object;

    return FcObjectLookupOtherNameById (object);

}

typedef FcChar8 *FC8;

#include "fcconst.h"

FcBool

FcNameRegisterConstants (const FcConstant *consts, int nconsts)

{

    /* Deprecated. */

    return FcFalse;

}

FcBool

FcNameUnregisterConstants (const FcConstant *consts, int nconsts)

{

    /* Deprecated. */

    return FcFalse;

}

static int

FcNameFindConstant (const FcChar8 *string)

{

    int min, max;

    int last = NUM_FC_CONST_SYMBOLS - 1;

    FcChar8 c = FcToLower (string[0]);

    FcChar8 b = FcToLower (_FcBaseConstantSymbols[0].name[0]);

    FcChar8 e = FcToLower (_FcBaseConstantSymbols[last - 1].name[0]);

    if (c < b || c > e)

  return -1; /* not found */

    for (min = 0, max = last; min <= max;) {

  int mid = (min + max) / 2;

  int ret;

  ret = FcStrCmpIgnoreCase (_FcBaseConstantSymbols[mid].name, string);

  if (ret > 0)

      max = mid - 1;

  else if (ret < 0)

      min = mid + 1;

  else

      return mid;

    }

    return -1;

}

const FcConstant *

FcNameGetConstant (const FcChar8 *string)

{

    int pos = FcNameFindConstant (string);

    if (pos >= 0) {

  const FcConstSymbolMap *sym = &_FcBaseConstantSymbols[pos];

  if (sym->values[1].object != FC_INVALID_OBJECT) {

      fprintf (stderr, "Fontconfig error: the ambiguous constant name: %s: Use :<property name>=<keyword> instead of :<keyword>\n", string);

      return NULL;

  } else {

            return &_FcBaseConstantObjects[sym->values[0].idx_obj].values[sym->values[0].idx_variant];

  }

    }

    return NULL;

}

static const FcConstant *

FcNameGetConstantForObject (const FcChar8 *string, FcObject object)

{

    int i;

    if (object > FC_MAX_BASE_OBJECT)

  return NULL;

    for (i = 0; _FcBaseConstantObjects[object].values[i].name != NULL; i++) {

  FcChar8 c = FcToLower (string[0]);

  FcChar8 b = FcToLower (_FcBaseConstantObjects[object].values[i].name[0]);

  int     ret;

  if (c < b)

      return NULL;

  ret = FcStrCmpIgnoreCase (_FcBaseConstantObjects[object].values[i].name, string);

  if (ret > 0)

      return NULL;

  else if (ret == 0) {

      return &_FcBaseConstantObjects[object].values[i];

  }

    }

    return NULL;

}

const FcConstant *

FcNameGetConstantFor (const FcChar8 *string, const char *object)

{

    FcObject o = FcObjectFromName (object);

    return FcNameGetConstantForObject (string, o);

}

FcBool

FcNameConstant (const FcChar8 *string, int *result)

{

    const FcConstant *c;

    if ((c = FcNameGetConstant (string))) {

  *result = c->value;

  return FcTrue;

    }

    return FcFalse;

}

FcBool

FcNameConstantWithObjectCheck (const FcChar8 *string, FcObject object, int *result)

{

    const FcConstant *c;

    c = FcNameGetConstantForObject (string, object);

    if (c) {

  *result = c->value;

  return FcTrue;

    }

    return FcFalse;

}

const FcChar8 *

FcNameGetConstantNameFromObject (FcObject object, int value)

{

    int i;

    if (object > FC_MAX_BASE_OBJECT)

  return NULL;

    for (i = 0; _FcBaseConstantObjects[object].values[i].name != NULL; i++) {

  if (_FcBaseConstantObjects[object].values[i].value == value) {

      return _FcBaseConstantObjects[object].values[i].name;

  }

    }

    return NULL;

}

const FcChar8 *

FcNameGetConstantNameFrom (const char *object, int value)

{

    return FcNameGetConstantNameFromObject (FcObjectFromName ((const char *)object), value);

}

FcBool

FcNameBool (const FcChar8 *v, FcBool *result)

{

    char c0, c1;

    c0 = *v;

    c0 = FcToLower (c0);

    if (c0 == 't' || c0 == 'y' || c0 == '1') {

  *result = FcTrue;

  return FcTrue;

    }

    if (c0 == 'f' || c0 == 'n' || c0 == '0') {

  *result = FcFalse;

  return FcTrue;

    }

    if (c0 == 'd' || c0 == 'x' || c0 == '2') {

  *result = FcDontCare;

  return FcTrue;

    }

    if (c0 == 'o') {

  c1 = v[1];

  c1 = FcToLower (c1);

  if (c1 == 'n') {

      *result = FcTrue;

      return FcTrue;

  }

  if (c1 == 'f') {

      *result = FcFalse;

      return FcTrue;

  }

  if (c1 == 'r') {

      *result = FcDontCare;

      return FcTrue;

  }

    }

    return FcFalse;

}

static FcValue

FcNameConvert (FcType type, const char *object, FcChar8 *string)

{

    FcValue  v;

    FcMatrix m;

    double   b, e;

    char    *p;

    FcObject o = FcObjectFromName (object);

    v.type = type;

    switch ((int)v.type) {

    case FcTypeInteger:

  if (!FcNameConstantWithObjectCheck (string, o, &v.u.i))

      v.u.i = atoi ((char *)string);

  break;

    case FcTypeString:

  v.u.s = FcStrCopy (string);

  if (!v.u.s)

      v.type = FcTypeVoid;

  break;

    case FcTypeBool:

  if (!FcNameBool (string, &v.u.b))

      v.u.b = FcFalse;

  break;

    case FcTypeDouble:

  v.u.d = strtod ((char *)string, 0);

  break;

    case FcTypeMatrix:

  FcMatrixInit (&m);

  sscanf ((char *)string, "%lg %lg %lg %lg", &m.xx, &m.xy, &m.yx, &m.yy);

  v.u.m = FcMatrixCopy (&m);

  break;

    case FcTypeCharSet:

  v.u.c = FcNameParseCharSet (string);

  if (!v.u.c)

      v.type = FcTypeVoid;

  break;

    case FcTypeLangSet:

  v.u.l = FcNameParseLangSet (string);

  if (!v.u.l)

      v.type = FcTypeVoid;

  break;

    case FcTypeRange:

  if (sscanf ((char *)string, "[%lg %lg]", &b, &e) != 2) {

      char  *sc, *ec;

      size_t len = strlen ((const char *)string);

      int    si, ei;

      sc = malloc (len + 1);

      ec = malloc (len + 1);

      if (sc && ec && sscanf ((char *)string, "[%s %[^]]]", sc, ec) == 2) {

    if (FcNameConstantWithObjectCheck ((const FcChar8 *)sc, o, &si) &&

        FcNameConstantWithObjectCheck ((const FcChar8 *)ec, o, &ei))

        v.u.r = FcRangeCreateDouble (si, ei);

    else

        goto bail1;

      } else {

      bail1:

    v.type = FcTypeDouble;

    if (FcNameConstantWithObjectCheck (string, o, &si)) {

        v.u.d = (double)si;

    } else {

        v.u.d = strtod ((char *)string, &p);

        if (p != NULL && p[0] != 0)

      v.type = FcTypeVoid;

    }

      }

      if (sc)

    free (sc);

      if (ec)

    free (ec);

  } else

      v.u.r = FcRangeCreateDouble (b, e);

  break;

    default:

  /* No valid type to convert */

  v.type = FcTypeVoid;

  break;

    }

    return v;

}

static const FcChar8 *

FcNameFindNext (const FcChar8 *cur, const char *delim, FcChar8 *save, FcChar8 *last)

{

    FcChar8 c;

    while ((c = *cur)) {

  if (!isspace (c))

      break;

  ++cur;

    }

    while ((c = *cur)) {

  if (c == '\\') {

      ++cur;

      if (!(c = *cur))

    break;

  } else if (strchr (delim, c))

      break;

  ++cur;

  *save++ = c;

    }

    *save = 0;

    *last = *cur;

    if (*cur)

  cur++;

    return cur;

}

FcPattern *

FcNameParse (const FcChar8 *name)

{

    FcChar8            *save;

    FcPattern          *pat;

    double              d;

    FcChar8            *e;

    FcChar8             delim;

    FcValue             v;

    const FcObjectType *t;

    const FcConstant   *c;

    /* freed below */

    save = malloc (strlen ((char *)name) + 1);

    if (!save)

  goto bail0;

    pat = FcPatternCreate();

    if (!pat)

  goto bail1;

    for (;;) {

  name = FcNameFindNext (name, "-,:", save, &delim);

  if (save[0]) {

      if (!FcPatternObjectAddString (pat, FC_FAMILY_OBJECT, save))

    goto bail2;

  }

  if (delim != ',')

      break;

    }

    if (delim == '-') {

  for (;;) {

      name = FcNameFindNext (name, "-,:", save, &delim);

      d = strtod ((char *)save, (char **)&e);

      if (e != save) {

    if (!FcPatternObjectAddDouble (pat, FC_SIZE_OBJECT, d))

        goto bail2;

      }

      if (delim != ',')

    break;

  }

    }

    while (delim == ':') {

  name = FcNameFindNext (name, "=_:", save, &delim);

  if (save[0]) {

      if (delim == '=' || delim == '_') {

    t = FcNameGetObjectType ((char *)save);

    for (;;) {

        name = FcNameFindNext (name, ":,", save, &delim);

        if (t) {

      v = FcNameConvert (t->type, t->object, save);

      if (!FcPatternAdd (pat, t->object, v, FcTrue)) {

          FcValueDestroy (v);

          goto bail2;

      }

      FcValueDestroy (v);

        }

        if (delim != ',')

      break;

    }

      } else {

    if ((c = FcNameGetConstant (save))) {

        t = FcNameGetObjectType ((char *)c->object);

        if (t == NULL)

      goto bail2;

        switch ((int)t->type) {

        case FcTypeInteger:

        case FcTypeDouble:

      if (!FcPatternAddInteger (pat, c->object, c->value))

          goto bail2;

      break;

        case FcTypeBool:

      if (!FcPatternAddBool (pat, c->object, c->value))

          goto bail2;

      break;

        case FcTypeRange:

      if (!FcPatternAddInteger (pat, c->object, c->value))

          goto bail2;

      break;

        default:

      break;

        }

    }

      }

  }

    }

    free (save);

    return pat;

bail2:

    FcPatternDestroy (pat);

bail1:

    free (save);

bail0:

    return 0;

}

static FcBool

FcNameUnparseString (FcStrBuf      *buf,

                     const FcChar8 *string,

                     const FcChar8 *escape)

{

    FcChar8 c;

    while ((c = *string++)) {

  if (escape && strchr ((char *)escape, (char)c)) {

      if (!FcStrBufChar (buf, escape[0]))

    return FcFalse;

  }

  if (!FcStrBufChar (buf, c))

      return FcFalse;

    }

    return FcTrue;

}

FcBool

FcNameUnparseValue (FcStrBuf *buf,

                    FcValue  *v0,

                    FcChar8  *escape)

{

    FcChar8 temp[1024];

    FcValue v = FcValueCanonicalize (v0);

    switch (v.type) {

    case FcTypeUnknown:

    case FcTypeVoid:

  return FcTrue;

    case FcTypeInteger:

  sprintf ((char *)temp, "%d", v.u.i);

  return FcNameUnparseString (buf, temp, 0);

    case FcTypeDouble:

  sprintf ((char *)temp, "%g", v.u.d);

  return FcNameUnparseString (buf, temp, 0);

    case FcTypeString:

  return FcNameUnparseString (buf, v.u.s, escape);

    case FcTypeBool:

  return FcNameUnparseString (buf,

                              v.u.b == FcTrue ? (FcChar8 *)"True" : v.u.b == FcFalse ? (FcChar8 *)"False"

                                                                                     : (FcChar8 *)"DontCare",

                              0);

    case FcTypeMatrix:

  sprintf ((char *)temp, "%g %g %g %g",

           v.u.m->xx, v.u.m->xy, v.u.m->yx, v.u.m->yy);

  return FcNameUnparseString (buf, temp, 0);

    case FcTypeCharSet:

  return FcNameUnparseCharSet (buf, v.u.c);

    case FcTypeLangSet:

  return FcNameUnparseLangSet (buf, v.u.l);

    case FcTypeFTFace:

  return FcTrue;

    case FcTypeRange:

  sprintf ((char *)temp, "[%g %g]", v.u.r->begin, v.u.r->end);

  return FcNameUnparseString (buf, temp, 0);

    }

    return FcFalse;

}

FcBool

FcNameUnparseValueList (FcStrBuf      *buf,

                        FcValueListPtr v,

                        FcChar8       *escape)

{

    while (v) {

  if (!FcNameUnparseValue (buf, &v->value, escape))

      return FcFalse;

  if ((v = FcValueListNext (v)) != NULL)

      if (!FcNameUnparseString (buf, (FcChar8 *)",", 0))

    return FcFalse;

    }

    return FcTrue;

}

#define FC_ESCAPE_FIXED    "\\-:,"

#define FC_ESCAPE_VARIABLE "\\=_:,"

FcChar8 *

FcNameUnparse (FcPattern *pat)

{

    return FcNameUnparseEscaped (pat, FcTrue);

}

FcChar8 *

FcNameUnparseEscaped (FcPattern *pat, FcBool escape)

{

    FcStrBuf      buf, buf2;

    FcChar8       buf_static[8192], buf2_static[256];

    int           i;

    FcPatternElt *e;

    FcStrBufInit (&buf, buf_static, sizeof (buf_static));

    FcStrBufInit (&buf2, buf2_static, sizeof (buf2_static));

    e = FcPatternObjectFindElt (pat, FC_FAMILY_OBJECT);

    if (e) {

  if (!FcNameUnparseValueList (&buf, FcPatternEltValues (e), escape ? (FcChar8 *)FC_ESCAPE_FIXED : 0))

      goto bail0;

    }

    e = FcPatternObjectFindElt (pat, FC_SIZE_OBJECT);

    if (e) {

  FcChar8 *p;

  if (!FcNameUnparseString (&buf2, (FcChar8 *)"-", 0))

      goto bail0;

  if (!FcNameUnparseValueList (&buf2, FcPatternEltValues (e), escape ? (FcChar8 *)FC_ESCAPE_FIXED : 0))

      goto bail0;

  p = FcStrBufDoneStatic (&buf2);

  FcStrBufDestroy (&buf2);

  if (strlen ((const char *)p) > 1)

      if (!FcStrBufString (&buf, p))

    goto bail0;

    }

    for (i = 0; i < NUM_OBJECT_TYPES; i++) {

  FcObject            id = i + 1;

  const FcObjectType *o;

  o = &FcObjects[i];

  if (!strcmp (o->object, FC_FAMILY) ||

      !strcmp (o->object, FC_SIZE))

      continue;

  e = FcPatternObjectFindElt (pat, id);

  if (e) {

      if (!FcNameUnparseString (&buf, (FcChar8 *)":", 0))

    goto bail0;

      if (!FcNameUnparseString (&buf, (FcChar8 *)o->object, escape ? (FcChar8 *)FC_ESCAPE_VARIABLE : 0))

    goto bail0;

      if (!FcNameUnparseString (&buf, (FcChar8 *)"=", 0))

    goto bail0;

      if (!FcNameUnparseValueList (&buf, FcPatternEltValues (e), escape ? (FcChar8 *)FC_ESCAPE_VARIABLE : 0))

    goto bail0;

  }

    }

    return FcStrBufDone (&buf);

bail0:

    FcStrBufDestroy (&buf);

    return 0;

}

#define __fcname__

#include "fcaliastail.h"

#undef __fcname__