396 lines
8.3 KiB
C
396 lines
8.3 KiB
C
/* $NetBSD: data.c,v 1.2 2002/12/15 09:13:21 takemura Exp $ */
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/*-
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* Copyright (c) 2002 TAKEMRUA Shin
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* All rights reserved.
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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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <strings.h>
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#include <stdlib.h>
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#include <time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include "tpctl.h"
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#ifndef lint
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: data.c,v 1.2 2002/12/15 09:13:21 takemura Exp $");
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#endif /* not lint */
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static void *
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alloc(int size)
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{
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void *res;
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if ((res = malloc(size)) == NULL) {
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perror(getprogname());
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exit(EXIT_FAILURE);
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}
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return (res);
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}
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/*
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* duplicate string
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* trailing white space will be removed.
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*/
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static char *
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strdup_prune(char *s)
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{
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char *res, *tail;
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tail = &s[strlen(s) - 1];
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while (s <= tail && strchr(" \t", *tail) != NULL)
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tail--;
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res = alloc(tail - s + 2);
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memcpy(res, s, tail - s + 1);
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res[tail - s + 1] = '\0';
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return (res);
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}
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int
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init_data(struct tpctl_data *data)
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{
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TAILQ_INIT(&data->list);
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return (0);
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}
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int
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read_data(char *filename, struct tpctl_data *data)
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{
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int res, len, n, i, t;
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char buf[MAXDATALEN + 2], *p, *p2;
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FILE *fp;
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struct tpctl_data_elem *elem;
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data->lineno = 0;
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if ((fp = fopen(filename, "r")) == NULL)
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return (ERR_NOFILE);
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while (fgets(buf, sizeof(buf), fp) != NULL) {
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data->lineno++;
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buf[MAXDATALEN + 1] = '\0';
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len = strlen(buf);
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if (MAXDATALEN < len) {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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/* prune trailing space and newline */;
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p = &buf[len - 1];
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while (buf <= p && strchr(" \t\n\r", *p) != NULL)
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*p-- = '\0';
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/* skip space */;
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p = buf;
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while (*p != '\0' && strchr(" \t", *p) != NULL)
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p++;
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/* comment or empty line */
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if (*p == '#' || *p == '\0') {
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elem = alloc(sizeof(*elem));
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elem->type = TPCTL_COMMENT;
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elem->name = strdup_prune(buf);
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TAILQ_INSERT_TAIL(&data->list, elem, link);
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continue;
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}
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/* calibration parameter */
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elem = alloc(sizeof(*elem));
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elem->type = TPCTL_CALIBCOORDS;
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p2 = p;
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while (*p2 != ',' && *p2 != '\0')
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p2++;
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if (*p2 != ',') {
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/* missing ',' */
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res = ERR_SYNTAX;
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free(elem);
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goto exit_func;
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}
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*p2 = '\0';
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elem->name = strdup_prune(p);
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if (search_data(data, elem->name) != NULL) {
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free(elem);
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res = ERR_DUPNAME;
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goto exit_func;
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}
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TAILQ_INSERT_TAIL(&data->list, elem, link);
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p = p2 + 1;
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/*
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* minX, maxX, minY, maxY
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*/
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for (i = 0; i < 4; i++) {
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t = strtol(p, &p2, 0);
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if (p == p2) {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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p = p2;
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while (*p != '\0' && strchr(" \t", *p) != NULL)
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p++;
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if (*p != ',') {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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p++;
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switch (i % 4) {
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case 0:
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elem->calibcoords.minx = t;
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break;
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case 1:
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elem->calibcoords.miny = t;
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break;
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case 2:
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elem->calibcoords.maxx = t;
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break;
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case 3:
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elem->calibcoords.maxy = t;
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break;
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}
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}
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/*
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* number of samples
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*/
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n = strtol(p, &p2, 0);
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if (p == p2) {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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p = p2;
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while (*p != '\0' && strchr(" \t", *p) != NULL)
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p++;
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if (WSMOUSE_CALIBCOORDS_MAX < n) {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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elem->calibcoords.samplelen = n;
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/*
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* samples
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*/
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for (i = 0; i < n * 4; i++) {
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if (*p != ',') {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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p++;
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t = strtol(p, &p2, 0);
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if (p == p2) {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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p = p2;
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while (*p != '\0' && strchr(" \t", *p) != NULL)
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p++;
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switch (i % 4) {
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case 0:
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elem->calibcoords.samples[i / 4].rawx = t;
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break;
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case 1:
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elem->calibcoords.samples[i / 4].rawy = t;
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break;
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case 2:
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elem->calibcoords.samples[i / 4].x = t;
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break;
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case 3:
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elem->calibcoords.samples[i / 4].y = t;
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break;
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}
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}
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if (*p != '\0') {
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res = ERR_SYNTAX;
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goto exit_func;
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}
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}
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if (ferror(fp))
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res = ERR_IO;
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else
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res = ERR_NONE;
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exit_func:
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fclose(fp);
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if (res != ERR_NONE) {
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free_data(data);
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}
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return (res);
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}
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int
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write_data(char *filename, struct tpctl_data *data)
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{
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int res, fd;
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FILE *fp;
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struct tpctl_data_elem *elem;
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char *p, tmpfile[MAXPATHLEN + 1];
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if (filename == NULL) {
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fp = stdout;
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} else {
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strncpy(tmpfile, filename, MAXPATHLEN);
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tmpfile[MAXPATHLEN] = '\0';
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if ((p = strrchr(tmpfile, '/')) == NULL) {
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strcpy(tmpfile, TPCTL_TMP_FILENAME);
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} else {
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p++;
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if (MAXPATHLEN <
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p - tmpfile + strlen(TPCTL_TMP_FILENAME))
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return (ERR_NOFILE);/* file name is too long */
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strcat(tmpfile, TPCTL_TMP_FILENAME);
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}
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if ((fd = open(tmpfile, O_RDWR|O_CREAT|O_EXCL, 0644)) < 0) {
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fprintf(stderr, "%s: can't create %s\n",
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getprogname(), tmpfile);
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return (ERR_NOFILE);
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}
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if ((fp = fdopen(fd, "w")) == NULL) {
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perror("fdopen");
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exit(EXIT_FAILURE);
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}
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}
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TAILQ_FOREACH(elem, &data->list, link) {
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switch (elem->type) {
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case TPCTL_CALIBCOORDS:
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write_coords(fp, elem->name, &elem->calibcoords);
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break;
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case TPCTL_COMMENT:
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fprintf(fp, "%s\n", elem->name);
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break;
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default:
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fprintf(stderr, "%s: internal error\n", getprogname());
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exit(EXIT_FAILURE);
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break;
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}
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}
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if (filename != NULL) {
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fclose(fp);
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close(fd);
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if (rename(tmpfile, filename) < 0) {
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unlink(tmpfile);
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return (ERR_NOFILE);
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}
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}
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res = ERR_NONE;
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return (res);
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}
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void
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write_coords(FILE *fp, char *name, struct wsmouse_calibcoords *coords)
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{
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int i;
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fprintf(fp, "%s,%d,%d,%d,%d,%d", name,
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coords->minx, coords->miny,
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coords->maxx, coords->maxy,
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coords->samplelen);
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for (i = 0; i < coords->samplelen; i++) {
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fprintf(fp, ",%d,%d,%d,%d",
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coords->samples[i].rawx,
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coords->samples[i].rawy,
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coords->samples[i].x,
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coords->samples[i].y);
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}
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fprintf(fp, "\n");
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}
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void
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free_data(struct tpctl_data *data)
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{
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struct tpctl_data_elem *elem;
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while (!TAILQ_EMPTY(&data->list)) {
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elem = TAILQ_FIRST(&data->list);
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TAILQ_REMOVE(&data->list, elem, link);
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switch (elem->type) {
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case TPCTL_CALIBCOORDS:
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case TPCTL_COMMENT:
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free(elem->name);
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break;
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default:
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fprintf(stderr, "%s: internal error\n", getprogname());
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exit(EXIT_FAILURE);
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break;
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}
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}
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}
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int
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replace_data(struct tpctl_data *data, char *name, struct wsmouse_calibcoords *calibcoords)
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{
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struct tpctl_data_elem *elem;
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TAILQ_FOREACH(elem, &data->list, link) {
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if (elem->type == TPCTL_CALIBCOORDS &&
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strcmp(name, elem->name) == 0) {
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elem->calibcoords = *calibcoords;
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return (0);
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}
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}
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elem = alloc(sizeof(*elem));
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elem->type = TPCTL_CALIBCOORDS;
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elem->name = strdup(name);
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elem->calibcoords = *calibcoords;
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if (elem->name == NULL) {
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perror(getprogname());
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exit(EXIT_FAILURE);
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}
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TAILQ_INSERT_TAIL(&data->list, elem, link);
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return (1);
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}
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struct wsmouse_calibcoords *
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search_data(struct tpctl_data *data, char *name)
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{
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struct tpctl_data_elem *elem;
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TAILQ_FOREACH(elem, &data->list, link) {
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if (elem->type == TPCTL_CALIBCOORDS &&
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strcmp(name, elem->name) == 0) {
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return (&elem->calibcoords);
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}
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}
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return (NULL);
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}
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