2ffb124daa
config parse (and use conf_cmd_add to populate defaults); based on a discussion with Tiago Cunha. While this looks ugly, there are likely some other changes here to come.
572 lines
12 KiB
Plaintext
572 lines
12 KiB
Plaintext
/* $OpenBSD: parse.y,v 1.56 2014/01/29 18:34:22 okan Exp $ */
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/*
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* Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
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* Copyright (c) 2001 Markus Friedl. All rights reserved.
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* Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
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* Copyright (c) 2001 Theo de Raadt. All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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%{
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "calmwm.h"
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TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
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static struct file {
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TAILQ_ENTRY(file) entry;
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FILE *stream;
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char *name;
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int lineno;
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int errors;
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} *file, *topfile;
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struct file *pushfile(const char *);
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int popfile(void);
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int yyparse(void);
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int yylex(void);
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int yyerror(const char *, ...);
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int kw_cmp(const void *, const void *);
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int lookup(char *);
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int lgetc(int);
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int lungetc(int);
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int findeol(void);
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static struct conf *conf;
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typedef struct {
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union {
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int64_t number;
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char *string;
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} v;
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int lineno;
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} YYSTYPE;
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%}
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%token FONTNAME STICKY GAP MOUSEBIND
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%token AUTOGROUP BIND COMMAND IGNORE
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%token YES NO BORDERWIDTH MOVEAMOUNT
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%token COLOR SNAPDIST
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%token ACTIVEBORDER INACTIVEBORDER URGENCYBORDER
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%token GROUPBORDER UNGROUPBORDER
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%token MENUBG MENUFG
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%token FONTCOLOR FONTSELCOLOR
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%token ERROR
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%token <v.string> STRING
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%token <v.number> NUMBER
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%type <v.number> yesno
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%type <v.string> string
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%%
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grammar : /* empty */
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| grammar '\n'
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| grammar main '\n'
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| grammar color '\n'
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| grammar error '\n' { file->errors++; }
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;
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string : string STRING {
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if (asprintf(&$$, "%s %s", $1, $2) == -1) {
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free($1);
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free($2);
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yyerror("string: asprintf");
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YYERROR;
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}
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free($1);
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free($2);
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}
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| STRING
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;
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yesno : YES { $$ = 1; }
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| NO { $$ = 0; }
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;
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main : FONTNAME STRING {
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free(conf->font);
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conf->font = $2;
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}
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| STICKY yesno {
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if ($2 == 0)
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conf->flags &= ~CONF_STICKY_GROUPS;
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else
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conf->flags |= CONF_STICKY_GROUPS;
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}
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| BORDERWIDTH NUMBER {
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if ($2 < 0 || $2 > UINT_MAX) {
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yyerror("invalid borderwidth: %d", $2);
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YYERROR;
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}
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conf->bwidth = $2;
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}
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| MOVEAMOUNT NUMBER {
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if ($2 < 0 || $2 > INT_MAX) {
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yyerror("invalid movemount: %d", $2);
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YYERROR;
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}
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conf->mamount = $2;
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}
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| SNAPDIST NUMBER {
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if ($2 < 0 || $2 > INT_MAX) {
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yyerror("invalid snapdist: %d", $2);
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YYERROR;
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}
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conf->snapdist = $2;
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}
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| COMMAND STRING string {
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if (!conf_cmd_add(conf, $2, $3)) {
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yyerror("command name/path too long");
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free($2);
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free($3);
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YYERROR;
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}
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free($2);
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free($3);
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}
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| AUTOGROUP NUMBER STRING {
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if ($2 < 0 || $2 > 9) {
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free($3);
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yyerror("invalid autogroup: %d", $2);
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YYERROR;
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}
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conf_autogroup(conf, $2, $3);
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free($3);
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}
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| IGNORE STRING {
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if (!conf_ignore(conf, $2)) {
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yyerror("ignore windowname too long");
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free($2);
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YYERROR;
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}
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free($2);
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}
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| BIND STRING string {
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if (!conf_bind_kbd(conf, $2, $3)) {
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yyerror("invalid bind: %s %s", $2, $3);
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free($2);
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free($3);
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YYERROR;
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}
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free($2);
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free($3);
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}
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| GAP NUMBER NUMBER NUMBER NUMBER {
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if ($2 < 0 || $2 > INT_MAX ||
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$3 < 0 || $3 > INT_MAX ||
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$4 < 0 || $4 > INT_MAX ||
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$5 < 0 || $5 > INT_MAX) {
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yyerror("invalid gap: %d %d %d %d",
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$2, $3, $4, $5);
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YYERROR;
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}
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conf->gap.top = $2;
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conf->gap.bottom = $3;
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conf->gap.left = $4;
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conf->gap.right = $5;
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}
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| MOUSEBIND STRING string {
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if (!conf_bind_mouse(conf, $2, $3)) {
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yyerror("invalid mousebind: %s %s", $2, $3);
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free($2);
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free($3);
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YYERROR;
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}
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free($2);
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free($3);
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}
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;
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color : COLOR colors
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;
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colors : ACTIVEBORDER STRING {
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free(conf->color[CWM_COLOR_BORDER_ACTIVE]);
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conf->color[CWM_COLOR_BORDER_ACTIVE] = $2;
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}
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| INACTIVEBORDER STRING {
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free(conf->color[CWM_COLOR_BORDER_INACTIVE]);
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conf->color[CWM_COLOR_BORDER_INACTIVE] = $2;
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}
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| URGENCYBORDER STRING {
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free(conf->color[CWM_COLOR_BORDER_URGENCY]);
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conf->color[CWM_COLOR_BORDER_URGENCY] = $2;
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}
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| GROUPBORDER STRING {
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free(conf->color[CWM_COLOR_BORDER_GROUP]);
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conf->color[CWM_COLOR_BORDER_GROUP] = $2;
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}
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| UNGROUPBORDER STRING {
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free(conf->color[CWM_COLOR_BORDER_UNGROUP]);
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conf->color[CWM_COLOR_BORDER_UNGROUP] = $2;
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}
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| MENUBG STRING {
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free(conf->color[CWM_COLOR_MENU_BG]);
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conf->color[CWM_COLOR_MENU_BG] = $2;
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}
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| MENUFG STRING {
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free(conf->color[CWM_COLOR_MENU_FG]);
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conf->color[CWM_COLOR_MENU_FG] = $2;
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}
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| FONTCOLOR STRING {
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free(conf->color[CWM_COLOR_MENU_FONT]);
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conf->color[CWM_COLOR_MENU_FONT] = $2;
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}
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| FONTSELCOLOR STRING {
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free(conf->color[CWM_COLOR_MENU_FONT_SEL]);
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conf->color[CWM_COLOR_MENU_FONT_SEL] = $2;
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}
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;
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%%
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struct keywords {
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const char *k_name;
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int k_val;
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};
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int
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yyerror(const char *fmt, ...)
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{
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va_list ap;
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file->errors++;
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va_start(ap, fmt);
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fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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return (0);
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}
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int
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kw_cmp(const void *k, const void *e)
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{
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return (strcmp(k, ((const struct keywords *)e)->k_name));
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}
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int
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lookup(char *s)
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{
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/* this has to be sorted always */
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static const struct keywords keywords[] = {
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{ "activeborder", ACTIVEBORDER},
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{ "autogroup", AUTOGROUP},
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{ "bind", BIND},
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{ "borderwidth", BORDERWIDTH},
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{ "color", COLOR},
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{ "command", COMMAND},
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{ "font", FONTCOLOR},
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{ "fontname", FONTNAME},
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{ "gap", GAP},
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{ "groupborder", GROUPBORDER},
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{ "ignore", IGNORE},
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{ "inactiveborder", INACTIVEBORDER},
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{ "menubg", MENUBG},
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{ "menufg", MENUFG},
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{ "mousebind", MOUSEBIND},
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{ "moveamount", MOVEAMOUNT},
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{ "no", NO},
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{ "selfont", FONTSELCOLOR},
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{ "snapdist", SNAPDIST},
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{ "sticky", STICKY},
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{ "ungroupborder", UNGROUPBORDER},
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{ "urgencyborder", URGENCYBORDER},
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{ "yes", YES}
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};
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const struct keywords *p;
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p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
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sizeof(keywords[0]), kw_cmp);
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if (p)
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return (p->k_val);
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else
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return (STRING);
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}
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#define MAXPUSHBACK 128
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u_char *parsebuf;
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int parseindex;
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u_char pushback_buffer[MAXPUSHBACK];
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int pushback_index = 0;
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int
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lgetc(int quotec)
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{
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int c, next;
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if (parsebuf) {
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/* Read character from the parsebuffer instead of input. */
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if (parseindex >= 0) {
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c = parsebuf[parseindex++];
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if (c != '\0')
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return (c);
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parsebuf = NULL;
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} else
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parseindex++;
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}
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if (pushback_index)
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return (pushback_buffer[--pushback_index]);
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if (quotec) {
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if ((c = getc(file->stream)) == EOF) {
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yyerror("reached end of file while parsing "
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"quoted string");
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if (file == topfile || popfile() == EOF)
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return (EOF);
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return (quotec);
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}
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return (c);
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}
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while ((c = getc(file->stream)) == '\\') {
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next = getc(file->stream);
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if (next != '\n') {
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c = next;
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break;
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}
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yylval.lineno = file->lineno;
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file->lineno++;
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}
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while (c == EOF) {
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if (file == topfile || popfile() == EOF)
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return (EOF);
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c = getc(file->stream);
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}
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return (c);
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}
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int
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lungetc(int c)
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{
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if (c == EOF)
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return (EOF);
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if (parsebuf) {
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parseindex--;
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if (parseindex >= 0)
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return (c);
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}
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if (pushback_index < MAXPUSHBACK-1)
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return (pushback_buffer[pushback_index++] = c);
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else
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return (EOF);
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}
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int
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findeol(void)
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{
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int c;
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parsebuf = NULL;
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/* skip to either EOF or the first real EOL */
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while (1) {
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if (pushback_index)
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c = pushback_buffer[--pushback_index];
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else
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c = lgetc(0);
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if (c == '\n') {
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file->lineno++;
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break;
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}
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if (c == EOF)
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break;
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}
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return (ERROR);
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}
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int
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yylex(void)
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{
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u_char buf[8096];
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u_char *p;
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int quotec, next, c;
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int token;
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p = buf;
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while ((c = lgetc(0)) == ' ' || c == '\t')
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; /* nothing */
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yylval.lineno = file->lineno;
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if (c == '#')
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while ((c = lgetc(0)) != '\n' && c != EOF)
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; /* nothing */
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switch (c) {
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case '\'':
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case '"':
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quotec = c;
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while (1) {
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if ((c = lgetc(quotec)) == EOF)
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return (0);
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if (c == '\n') {
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file->lineno++;
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continue;
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} else if (c == '\\') {
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if ((next = lgetc(quotec)) == EOF)
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return (0);
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if (next == quotec || c == ' ' || c == '\t')
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c = next;
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else if (next == '\n') {
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file->lineno++;
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continue;
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} else
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lungetc(next);
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} else if (c == quotec) {
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*p = '\0';
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break;
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}
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if (p + 1 >= buf + sizeof(buf) - 1) {
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yyerror("string too long");
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return (findeol());
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}
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*p++ = c;
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}
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yylval.v.string = xstrdup(buf);
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return (STRING);
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}
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#define allowed_to_end_number(x) \
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(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
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if (c == '-' || isdigit(c)) {
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do {
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*p++ = c;
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if ((unsigned)(p-buf) >= sizeof(buf)) {
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yyerror("string too long");
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return (findeol());
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}
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} while ((c = lgetc(0)) != EOF && isdigit(c));
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lungetc(c);
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if (p == buf + 1 && buf[0] == '-')
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goto nodigits;
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if (c == EOF || allowed_to_end_number(c)) {
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const char *errstr = NULL;
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*p = '\0';
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yylval.v.number = strtonum(buf, LLONG_MIN,
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LLONG_MAX, &errstr);
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if (errstr) {
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yyerror("\"%s\" invalid number: %s",
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buf, errstr);
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return (findeol());
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}
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return (NUMBER);
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} else {
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nodigits:
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while (p > buf + 1)
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lungetc(*--p);
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c = *--p;
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if (c == '-')
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return (c);
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}
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}
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/* Similar to other parse.y copies, but also allows '/' in strings */
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#define allowed_in_string(x) \
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(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
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x != '{' && x != '}' && x != '<' && x != '>' && \
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x != '!' && x != '=' && x != '#' && x != ','))
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if (isalnum(c) || c == ':' || c == '_' || c == '*' || c == '/') {
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do {
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*p++ = c;
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if ((unsigned)(p-buf) >= sizeof(buf)) {
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yyerror("string too long");
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return (findeol());
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}
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} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
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lungetc(c);
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*p = '\0';
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if ((token = lookup(buf)) == STRING)
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yylval.v.string = xstrdup(buf);
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return (token);
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}
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if (c == '\n') {
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yylval.lineno = file->lineno;
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file->lineno++;
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}
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if (c == EOF)
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return (0);
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return (c);
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}
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struct file *
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pushfile(const char *name)
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{
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struct file *nfile;
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nfile = xcalloc(1, sizeof(struct file));
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nfile->name = xstrdup(name);
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if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
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warn("%s", nfile->name);
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free(nfile->name);
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free(nfile);
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return (NULL);
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}
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nfile->lineno = 1;
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TAILQ_INSERT_TAIL(&files, nfile, entry);
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return (nfile);
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}
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int
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popfile(void)
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{
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struct file *prev;
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if ((prev = TAILQ_PREV(file, files, entry)) != NULL)
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prev->errors += file->errors;
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TAILQ_REMOVE(&files, file, entry);
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fclose(file->stream);
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free(file->name);
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free(file);
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file = prev;
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return (file ? 0 : EOF);
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}
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int
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parse_config(const char *filename, struct conf *xconf)
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{
|
|
int errors = 0;
|
|
|
|
conf = xconf;
|
|
|
|
if ((file = pushfile(filename)) == NULL) {
|
|
return (-1);
|
|
}
|
|
topfile = file;
|
|
|
|
yyparse();
|
|
errors = file->errors;
|
|
popfile();
|
|
|
|
return (errors ? -1 : 0);
|
|
}
|