Edit
kc3-lang/libxkbcommon/src/xkbcomp/parseutils.c
Ran Benita
- src/xkbcomp/parseutils.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 "parseutils.h" #include "path.h" ParseCommon * AppendStmt(ParseCommon * to, ParseCommon * append) { ParseCommon *start = to; if (append == NULL) return to; while ((to != NULL) && (to->next != NULL)) { to = to->next; } if (to) { to->next = append; return start; } return append; } ExprDef * ExprCreate(unsigned op, unsigned type) { ExprDef *expr; expr = uTypedAlloc(ExprDef); if (expr) { expr->common.stmtType = StmtExpr; expr->common.next = NULL; expr->op = op; expr->type = type; } else { FATAL("Couldn't allocate expression in parser\n"); /* NOTREACHED */ } return expr; } ExprDef * ExprCreateUnary(unsigned op, unsigned type, ExprDef * child) { ExprDef *expr; expr = uTypedAlloc(ExprDef); if (expr) { expr->common.stmtType = StmtExpr; expr->common.next = NULL; expr->op = op; expr->type = type; expr->value.child = child; } else { FATAL("Couldn't allocate expression in parser\n"); /* NOTREACHED */ } return expr; } ExprDef * ExprCreateBinary(unsigned op, ExprDef * left, ExprDef * right) { ExprDef *expr; expr = uTypedAlloc(ExprDef); if (expr) { expr->common.stmtType = StmtExpr; expr->common.next = NULL; expr->op = op; if ((op == OpAssign) || (left->type == TypeUnknown)) expr->type = right->type; else if ((left->type == right->type) || (right->type == TypeUnknown)) expr->type = left->type; else expr->type = TypeUnknown; expr->value.binary.left = left; expr->value.binary.right = right; } else { FATAL("Couldn't allocate expression in parser\n"); /* NOTREACHED */ } return expr; } KeycodeDef * KeycodeCreate(const char *name, unsigned long value) { KeycodeDef *def; def = uTypedAlloc(KeycodeDef); if (def) { def->common.stmtType = StmtKeycodeDef; def->common.next = NULL; strncpy(def->name, name, XkbKeyNameLength); def->name[XkbKeyNameLength] = '\0'; def->value = value; } else { FATAL("Couldn't allocate key name definition in parser\n"); /* NOTREACHED */ } return def; } KeyAliasDef * KeyAliasCreate(const char *alias, const char *real) { KeyAliasDef *def; def = uTypedAlloc(KeyAliasDef); if (def) { def->common.stmtType = StmtKeyAliasDef; def->common.next = NULL; strncpy(def->alias, alias, XkbKeyNameLength); def->alias[XkbKeyNameLength] = '\0'; strncpy(def->real, real, XkbKeyNameLength); def->real[XkbKeyNameLength] = '\0'; } else { FATAL("Couldn't allocate key alias definition in parser\n"); /* NOTREACHED */ } return def; } VModDef * VModCreate(xkb_atom_t name, ExprDef * value) { VModDef *def; def = uTypedAlloc(VModDef); if (def) { def->common.stmtType = StmtVModDef; def->common.next = NULL; def->name = name; def->value = value; } else { FATAL("Couldn't allocate variable definition in parser\n"); /* NOTREACHED */ } return def; } VarDef * VarCreate(ExprDef * name, ExprDef * value) { VarDef *def; def = uTypedAlloc(VarDef); if (def) { def->common.stmtType = StmtVarDef; def->common.next = NULL; def->name = name; def->value = value; } else { FATAL("Couldn't allocate variable definition in parser\n"); /* NOTREACHED */ } return def; } VarDef * BoolVarCreate(xkb_atom_t nameToken, unsigned set) { ExprDef *name, *value; name = ExprCreate(ExprIdent, TypeUnknown); name->value.str = nameToken; value = ExprCreate(ExprValue, TypeBoolean); value->value.uval = set; return VarCreate(name, value); } InterpDef * InterpCreate(char *sym, ExprDef * match) { InterpDef *def; def = uTypedAlloc(InterpDef); if (def) { def->common.stmtType = StmtInterpDef; def->common.next = NULL; def->sym = sym; def->match = match; } else { FATAL("Couldn't allocate interp definition in parser\n"); /* NOTREACHED */ } return def; } KeyTypeDef * KeyTypeCreate(xkb_atom_t name, VarDef * body) { KeyTypeDef *def; def = uTypedAlloc(KeyTypeDef); if (def) { def->common.stmtType = StmtKeyTypeDef; def->common.next = NULL; def->merge = MERGE_DEFAULT; def->name = name; def->body = body; } else { FATAL("Couldn't allocate key type definition in parser\n"); /* NOTREACHED */ } return def; } SymbolsDef * SymbolsCreate(const char *keyName, ExprDef *symbols) { SymbolsDef *def; def = uTypedAlloc(SymbolsDef); if (def) { def->common.stmtType = StmtSymbolsDef; def->common.next = NULL; def->merge = MERGE_DEFAULT; memset(def->keyName, 0, 5); strncpy(def->keyName, keyName, 4); def->symbols = symbols; } else { FATAL("Couldn't allocate symbols definition in parser\n"); /* NOTREACHED */ } return def; } GroupCompatDef * GroupCompatCreate(int group, ExprDef * val) { GroupCompatDef *def; def = uTypedAlloc(GroupCompatDef); if (def) { def->common.stmtType = StmtGroupCompatDef; def->common.next = NULL; def->merge = MERGE_DEFAULT; def->group = group; def->def = val; } else { FATAL("Couldn't allocate group compat definition in parser\n"); /* NOTREACHED */ } return def; } ModMapDef * ModMapCreate(uint32_t modifier, ExprDef * keys) { ModMapDef *def; def = uTypedAlloc(ModMapDef); if (def) { def->common.stmtType = StmtModMapDef; def->common.next = NULL; def->merge = MERGE_DEFAULT; def->modifier = modifier; def->keys = keys; } else { FATAL("Couldn't allocate mod mask definition in parser\n"); /* NOTREACHED */ } return def; } IndicatorMapDef * IndicatorMapCreate(xkb_atom_t name, VarDef * body) { IndicatorMapDef *def; def = uTypedAlloc(IndicatorMapDef); if (def) { def->common.stmtType = StmtIndicatorMapDef; def->common.next = NULL; def->merge = MERGE_DEFAULT; def->name = name; def->body = body; } else { FATAL("Couldn't allocate indicator map definition in parser\n"); /* NOTREACHED */ } return def; } IndicatorNameDef * IndicatorNameCreate(int ndx, ExprDef * name, bool virtual) { IndicatorNameDef *def; def = uTypedAlloc(IndicatorNameDef); if (def) { def->common.stmtType = StmtIndicatorNameDef; def->common.next = NULL; def->merge = MERGE_DEFAULT; def->ndx = ndx; def->name = name; def->virtual = virtual; } else { FATAL("Couldn't allocate indicator index definition in parser\n"); /* NOTREACHED */ } return def; } ExprDef * ActionCreate(xkb_atom_t name, ExprDef * args) { ExprDef *act; act = uTypedAlloc(ExprDef); if (act) { act->common.stmtType = StmtExpr; act->common.next = NULL; act->op = ExprActionDecl; act->value.action.name = name; act->value.action.args = args; return act; } FATAL("Couldn't allocate ActionDef in parser\n"); return NULL; } ExprDef * CreateKeysymList(char *sym) { ExprDef *def; def = ExprCreate(ExprKeysymList, TypeSymbols); if (!def) { FATAL("Couldn't allocate expression for keysym list in parser\n"); return NULL; } darray_init(def->value.list.syms); darray_init(def->value.list.symsMapIndex); darray_init(def->value.list.symsNumEntries); darray_append(def->value.list.syms, sym); darray_append(def->value.list.symsMapIndex, 0); darray_append(def->value.list.symsNumEntries, 1); return def; } ExprDef * CreateMultiKeysymList(ExprDef *list) { size_t nLevels = darray_size(list->value.list.symsMapIndex); darray_resize(list->value.list.symsMapIndex, 1); darray_resize(list->value.list.symsNumEntries, 1); darray_item(list->value.list.symsMapIndex, 0) = 0; darray_item(list->value.list.symsNumEntries, 0) = nLevels; return list; } ExprDef * AppendKeysymList(ExprDef * list, char *sym) { size_t nSyms = darray_size(list->value.list.syms); darray_append(list->value.list.symsMapIndex, nSyms); darray_append(list->value.list.symsNumEntries, 1); darray_append(list->value.list.syms, sym); return list; } ExprDef * AppendMultiKeysymList(ExprDef * list, ExprDef * append) { size_t nSyms = darray_size(list->value.list.syms); size_t numEntries = darray_size(append->value.list.syms); darray_append(list->value.list.symsMapIndex, nSyms); darray_append(list->value.list.symsNumEntries, numEntries); darray_append_items(list->value.list.syms, darray_mem(append->value.list.syms, 0), numEntries); darray_resize(append->value.list.syms, 0); FreeStmt(&append->common); return list; } int LookupKeysym(const char *str, xkb_keysym_t *sym_rtrn) { xkb_keysym_t sym; if ((!str) || (strcasecmp(str, "any") == 0) || (strcasecmp(str, "nosymbol") == 0)) { *sym_rtrn = XKB_KEY_NoSymbol; return 1; } else if ((strcasecmp(str, "none") == 0) || (strcasecmp(str, "voidsymbol") == 0)) { *sym_rtrn = XKB_KEY_VoidSymbol; return 1; } sym = xkb_keysym_from_name(str); if (sym != XKB_KEY_NoSymbol) { *sym_rtrn = sym; return 1; } return 0; } static void FreeInclude(IncludeStmt *incl); IncludeStmt * IncludeCreate(char *str, enum merge_mode merge) { IncludeStmt *incl, *first; char *file, *map, *stmt, *tmp, *extra_data; char nextop; bool haveSelf; haveSelf = false; incl = first = NULL; file = map = NULL; tmp = str; stmt = uDupString(str); while ((tmp) && (*tmp)) { if (XkbParseIncludeMap(&tmp, &file, &map, &nextop, &extra_data)) { if ((file == NULL) && (map == NULL)) { if (haveSelf) goto BAIL; haveSelf = true; } if (first == NULL) first = incl = uTypedAlloc(IncludeStmt); else { incl->next = uTypedAlloc(IncludeStmt); incl = incl->next; } if (incl) { incl->common.stmtType = StmtInclude; incl->common.next = NULL; incl->merge = merge; incl->stmt = NULL; incl->file = file; incl->map = map; incl->modifier = extra_data; incl->path = NULL; incl->next = NULL; } else { WSGO("Allocation failure in IncludeCreate\n"); ACTION("Using only part of the include\n"); break; } if (nextop == '|') merge = MERGE_AUGMENT; else merge = MERGE_OVERRIDE; } else { goto BAIL; } } if (first) first->stmt = stmt; else free(stmt); return first; BAIL: ERROR("Illegal include statement \"%s\"\n", stmt); ACTION("Ignored\n"); FreeInclude(first); free(stmt); return NULL; } void CheckDefaultMap(XkbFile * maps, const char *fileName) { XkbFile *dflt, *tmp; dflt = NULL; for (tmp = maps, dflt = NULL; tmp != NULL; tmp = (XkbFile *) tmp->common.next) { if (tmp->flags & XkbLC_Default) { if (dflt == NULL) dflt = tmp; else { if (warningLevel > 2) { WARN("Multiple default components in %s\n", (fileName ? fileName : "(unknown)")); ACTION("Using %s, ignoring %s\n", (dflt->name ? dflt->name : "(first)"), (tmp->name ? tmp->name : "(subsequent)")); } tmp->flags &= (~XkbLC_Default); } } } } /* * All latin-1 alphanumerics, plus parens, slash, minus, underscore and * wildcards. */ static const unsigned char componentSpecLegal[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0xa7, 0xff, 0x83, 0xfe, 0xff, 0xff, 0x87, 0xfe, 0xff, 0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x7f, 0xff, 0xff, 0xff, 0x7f, 0xff }; static void EnsureSafeMapName(char *name) { if (!name) return; while (*name!='\0') { if ((componentSpecLegal[(*name) / 8] & (1 << ((*name) % 8))) == 0) *name= '_'; name++; } } XkbFile * CreateXKBFile(struct xkb_context *ctx, enum xkb_file_type type, char *name, ParseCommon *defs, unsigned flags) { XkbFile *file; file = uTypedAlloc(XkbFile); if (file) { EnsureSafeMapName(name); memset(file, 0, sizeof(XkbFile)); file->type = type; file->topName = uDupString(name); file->name = name; file->defs = defs; file->id = xkb_context_take_file_id(ctx); file->flags = flags; } return file; } unsigned StmtSetMerge(ParseCommon * stmt, enum merge_mode merge, struct YYLTYPE *loc, void *scanner) { if ((merge == MERGE_ALT_FORM) && (stmt->stmtType != StmtKeycodeDef)) { yyerror(loc, scanner, "illegal use of 'alternate' merge mode"); merge = MERGE_DEFAULT; } return merge; } static void FreeExpr(ExprDef *expr) { char **sym; if (!expr) return; switch (expr->op) { case ExprActionList: case OpNegate: case OpUnaryPlus: case OpNot: case OpInvert: FreeStmt(&expr->value.child->common); break; case OpDivide: case OpAdd: case OpSubtract: case OpMultiply: case OpAssign: FreeStmt(&expr->value.binary.left->common); FreeStmt(&expr->value.binary.right->common); break; case ExprActionDecl: FreeStmt(&expr->value.action.args->common); break; case ExprArrayRef: FreeStmt(&expr->value.array.entry->common); break; case ExprKeysymList: darray_foreach(sym, expr->value.list.syms) free(*sym); darray_free(expr->value.list.syms); darray_free(expr->value.list.symsMapIndex); darray_free(expr->value.list.symsNumEntries); break; default: break; } } static void FreeInclude(IncludeStmt *incl) { IncludeStmt *next; while (incl) { next = incl->next; free(incl->file); free(incl->map); free(incl->modifier); free(incl->path); free(incl->stmt); free(incl); incl = next; } } void FreeStmt(ParseCommon *stmt) { ParseCommon *next; YYSTYPE u; while (stmt) { next = stmt->next; u.any = stmt; switch (stmt->stmtType) { case StmtInclude: FreeInclude((IncludeStmt *)stmt); /* stmt is already free'd here. */ stmt = NULL; break; case StmtExpr: FreeExpr(u.expr); break; case StmtVarDef: FreeStmt(&u.var->name->common); FreeStmt(&u.var->value->common); break; case StmtKeyTypeDef: FreeStmt(&u.keyType->body->common); break; case StmtInterpDef: free(u.interp->sym); FreeStmt(&u.interp->match->common); FreeStmt(&u.interp->def->common); break; case StmtVModDef: FreeStmt(&u.vmod->value->common); break; case StmtSymbolsDef: FreeStmt(&u.syms->symbols->common); break; case StmtModMapDef: FreeStmt(&u.modMask->keys->common); break; case StmtGroupCompatDef: FreeStmt(&u.groupCompat->def->common); break; case StmtIndicatorMapDef: FreeStmt(&u.ledMap->body->common); break; case StmtIndicatorNameDef: FreeStmt(&u.ledName->name->common); break; default: break; } free(stmt); stmt = next; } } void FreeXKBFile(XkbFile *file) { XkbFile *next; while (file) { next = (XkbFile *)file->common.next; switch (file->type) { case FILE_TYPE_KEYMAP: FreeXKBFile((XkbFile *)file->defs); break; case FILE_TYPE_TYPES: case FILE_TYPE_COMPAT: case FILE_TYPE_SYMBOLS: case FILE_TYPE_KEYCODES: case FILE_TYPE_GEOMETRY: FreeStmt(file->defs); break; default: break; } free(file->name); free(file->topName); free(file); file = next; } }