15ba121760
described by a structure with pointers to functions. - Clearly separate the "selection" mode (which provides copy and paste support in console) from wsmoused's main program. - Added the "modes" property to the configuration file and the "-m" command line option to specify which modes should be activated. (this is mostly useless for now, as only the "selection" mode exists; a new mode will be added soon, hopefully). - While here, several style fixes according to share/misc/style.
271 lines
6.5 KiB
C
271 lines
6.5 KiB
C
/* $NetBSD: config.c,v 1.3 2003/08/06 18:07:53 jmmv Exp $ */
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/*
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* Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Julio M. Merino Vidal.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name authors may not be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: config.c,v 1.3 2003/08/06 18:07:53 jmmv Exp $");
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#endif /* not lint */
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#include <sys/time.h>
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#include <dev/wscons/wsconsio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <err.h>
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#include <errno.h>
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#include <string.h>
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#include "pathnames.h"
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#include "wsmoused.h"
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/* --------------------------------------------------------------------- */
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/*
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* Global variables.
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*/
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static struct block *Global = NULL;
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/* --------------------------------------------------------------------- */
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/* Prototypes for config_yacc.y (only used here) */
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struct block *config_parse(FILE *);
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/* --------------------------------------------------------------------- */
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/* Creates a new, empty property. Returns a pointer to it. */
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struct prop *
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prop_new(void)
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{
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struct prop *p;
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p = (struct prop *) calloc(1, sizeof(struct prop));
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if (p == NULL)
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err(EXIT_FAILURE, "calloc");
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return p;
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}
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/* --------------------------------------------------------------------- */
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/* Frees a property created with prop_new. All data stored in the property
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* is also destroyed. */
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void
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prop_free(struct prop *p)
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{
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free(p->p_name);
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free(p->p_value);
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free(p);
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}
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/* --------------------------------------------------------------------- */
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/* Creates a new, empty block, with the specified type (see BLOCK_* macros).
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* Returns a pointer to it. */
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struct block *
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block_new(int type)
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{
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struct block *b;
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b = (struct block *) calloc(1, sizeof(struct block));
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if (b == NULL)
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err(EXIT_FAILURE, "calloc");
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b->b_type = type;
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return b;
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}
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/* --------------------------------------------------------------------- */
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/* Frees a block created with block_new. All data contained inside the block
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* is also destroyed. */
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void
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block_free(struct block *b)
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{
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int i;
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if (b->b_name != NULL)
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free(b->b_name);
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for (i = 0; i < b->b_prop_count; i++)
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prop_free(b->b_prop[i]);
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for (i = 0; i < b->b_child_count; i++)
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block_free(b->b_child[i]);
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free(b);
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}
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/* --------------------------------------------------------------------- */
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/* Adds a property to a block. */
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void
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block_add_prop(struct block *b, struct prop *p)
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{
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if (p == NULL)
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return;
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if (b->b_prop_count >= MAX_PROPS)
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errx(EXIT_FAILURE, "too many properties for current block");
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else {
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b->b_prop[b->b_prop_count] = p;
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b->b_prop_count++;
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}
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}
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/* --------------------------------------------------------------------- */
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/* Adds a child (block) to a block. */
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void
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block_add_child(struct block *b, struct block *c)
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{
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if (c == NULL)
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return;
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if (b->b_child_count >= MAX_BLOCKS)
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errx(EXIT_FAILURE, "too many childs for current block");
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else {
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c->b_parent = b;
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b->b_child[b->b_child_count] = c;
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b->b_child_count++;
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}
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}
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/* --------------------------------------------------------------------- */
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/* Get the value of a property in the specified block (or in its parents).
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* If not found, return the value given in def. */
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char *
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block_get_propval(struct block *b, const char *pname, char *def)
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{
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int pc;
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if (b == NULL)
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return def;
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while (b != NULL) {
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for (pc = 0; pc < b->b_prop_count; pc++)
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if (strcmp(b->b_prop[pc]->p_name, pname) == 0)
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return b->b_prop[pc]->p_value;
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b = b->b_parent;
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}
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return def;
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}
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/* --------------------------------------------------------------------- */
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/* Get the value of a property in the specified block converting it to an
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* integer, if possible. If the property cannot be found in the given
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* block, all its parents are tried. If after all not found (or conversion
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* not possible), return the value given in def. */
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int
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block_get_propval_int(struct block *b, const char *pname, int def)
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{
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char *ptr;
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int pc, ret;
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if (b == NULL)
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return def;
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while (b != NULL) {
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for (pc = 0; pc < b->b_prop_count; pc++)
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if (strcmp(b->b_prop[pc]->p_name, pname) == 0) {
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ret = (int) strtol(b->b_prop[pc]->p_value,
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&ptr, 10);
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if (b->b_prop[pc]->p_value == ptr) {
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warnx("expected integer in `%s' "
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"property", pname);
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return def;
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}
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return ret;
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}
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b = b->b_parent;
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}
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return def;
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}
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/* --------------------------------------------------------------------- */
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/* Gets a mode block (childs of the global scope), which matches the
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* specified name. */
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struct block *
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config_get_mode(const char *modename)
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{
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int bc;
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struct block *b;
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b = Global;
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if (strcmp(modename, "Global") == 0)
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return Global;
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if (b != NULL)
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for (bc = 0; bc < b->b_child_count; bc++)
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if (strcmp(b->b_child[bc]->b_name, modename) == 0)
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return b->b_child[bc];
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return NULL;
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}
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/* --------------------------------------------------------------------- */
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/* Reads the configuration file. */
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void
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config_read(const char *conffile, int opt)
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{
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FILE *f;
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errno = 0;
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f = fopen(conffile, "r");
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if (f != NULL) {
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Global = config_parse(f);
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if (Global == NULL)
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errx(EXIT_FAILURE, "%s contains fatal errors",
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conffile);
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} else if (errno != ENOENT || opt) {
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err(EXIT_FAILURE, "cannot open %s", conffile);
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}
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}
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/* --------------------------------------------------------------------- */
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/* Destroys all the configuration data. */
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void
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config_free(void)
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{
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if (Global != NULL)
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block_free(Global);
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}
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