52ebceff84
<- and -> move within the field -> will pull default string into empty buffer ^H (etc) will delete default string from buffer (first press) Put default string into display buffer if long and input in box. Scroll input text if longer than space on line.
583 lines
13 KiB
Modula-2
583 lines
13 KiB
Modula-2
/* $NetBSD: msg_sys.def,v 1.27 2004/06/05 19:05:36 dsl Exp $ */
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/*
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* Copyright 1997 Piermont Information Systems Inc.
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* All rights reserved.
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*
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* Written by Philip A. Nelson for Piermont Information Systems Inc.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software develooped for the NetBSD Project by
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* Piermont Information Systems Inc.
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* 4. The name of Piermont Information Systems Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
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* 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
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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static WINDOW *msg_win = NULL;
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static char *cbuffer;
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static size_t cbuffersize;
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static int last_i_was_nl, last_i_was_space;
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static int last_o_was_punct, last_o_was_space;
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static void _msg_beep(void);
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static int _msg_vprintf(int, const char *, va_list);
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#define MSG_PROMPT_ECHO 1
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#define MSG_PROMPT_HIDE_DFLT 2
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static void _msg_vprompt(const char *, int, const char *, char *,
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size_t, va_list);
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static char *msgmap = MAP_FAILED;
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static size_t msgmapsz;
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static int msgmapcount;
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/* Routines */
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static void
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_msg_beep(void)
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{
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fprintf(stderr, "\a");
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}
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WINDOW *
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msg_window(WINDOW *window)
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{
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size_t ncbuffersize;
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char *ncbuffer;
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WINDOW *old;
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old = msg_win;
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if (!window)
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return old;
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msg_win = window;
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ncbuffersize = getmaxx(window) * getmaxy(window) + 1;
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while (ncbuffersize > cbuffersize) {
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ncbuffer = malloc(ncbuffersize);
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if (ncbuffer == NULL) {
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/* we might get truncated messages... */
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ncbuffersize <<= 1;
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continue;
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}
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if (cbuffer != NULL)
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free(cbuffer);
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cbuffer = ncbuffer;
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cbuffersize = ncbuffersize;
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break;
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}
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last_o_was_punct = 0;
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last_o_was_space = 1;
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return old;
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}
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int
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msg_file(const char *file)
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{
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int fd;
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if (msgmap != MAP_FAILED)
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munmap(msgmap, msgmapsz);
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msgmap = MAP_FAILED;
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if (!file)
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return 0;
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fd = open(file, O_RDONLY, 0);
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if (fd == -1)
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return -1;
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msgmapsz = lseek(fd, 0, SEEK_END);
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msgmap = mmap(0, msgmapsz, PROT_READ, MAP_SHARED, fd, 0);
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close(fd);
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if (msgmap == MAP_FAILED)
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return -1;
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/* check_magic */
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if (strcmp(msgmap, "MSGTXTS") != 0) {
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msg_file(NULL);
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return -1;
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}
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msgmapcount = atoi(msgmap + 8);
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return 0;
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}
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const char *
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msg_string(msg msg_no)
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{
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int m = (intptr_t)msg_no;
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if (m > sizeof msg_list / sizeof msg_list[0])
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/* guess that we were passed a text string */
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return msg_no;
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if (msgmap != MAP_FAILED && m != 0 && m <= msgmapcount) {
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unsigned int offset = atoi(msgmap + 8 + 8 * m);
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if (offset != 0 && offset < msgmapsz)
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return msgmap + offset;
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}
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return msg_list[m];
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}
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void
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msg_clear(void)
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{
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wclear(msg_win);
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last_o_was_punct = 0;
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last_o_was_space = 1;
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}
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void
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msg_standout(void)
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{
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wstandout(msg_win);
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}
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void
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msg_standend(void)
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{
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wstandend(msg_win);
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}
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static int
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_msg_vprintf(int auto_fill, const char *fmt, va_list ap)
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{
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const char *wstart, *afterw;
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int wordlen, nspaces;
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int ret;
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ret = vsnprintf(cbuffer, cbuffersize, fmt, ap);
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if (!auto_fill) {
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waddstr(msg_win, cbuffer);
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/*
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* nothing is perfect if they flow text after a table,
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* but this may be decent.
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*/
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last_i_was_nl = last_i_was_space = 1;
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last_o_was_punct = 0;
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last_o_was_space = 1;
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goto out;
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}
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for (wstart = afterw = cbuffer; *wstart; wstart = afterw) {
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/* eat one space, or a whole word of non-spaces */
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if (isspace(*afterw))
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afterw++;
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else
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while (*afterw && !isspace(*afterw))
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afterw++;
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/* this is an nl: special formatting necessary */
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if (*wstart == '\n') {
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if (last_i_was_nl || last_i_was_space) {
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if (getcurx(msg_win) != 0)
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waddch(msg_win, '\n');
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if (last_i_was_nl) {
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/* last was an nl: paragraph break */
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waddch(msg_win, '\n');
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} else {
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/* last was space: line break */
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}
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last_o_was_punct = 0;
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last_o_was_space = 1;
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} else {
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/* last_o_was_punct unchanged */
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/* last_o_was_space unchanged */
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}
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last_i_was_space = 1;
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last_i_was_nl = 1;
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continue;
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}
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/* this is a tab: special formatting necessary. */
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if (*wstart == '\t') {
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if (last_i_was_nl) {
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/* last was an nl: list indent */
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if (getcurx(msg_win) != 0)
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waddch(msg_win, '\n');
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} else {
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/* last was not an nl: columns */
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}
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waddch(msg_win, '\t');
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last_i_was_nl = 0;
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last_i_was_space = 1;
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last_o_was_punct = 0;
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last_o_was_space = 1;
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continue;
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}
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/* this is a space: ignore it but set flags */
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last_i_was_nl = 0; /* all newlines handled above */
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last_i_was_space = isspace(*wstart);
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if (last_i_was_space)
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continue;
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/*
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* we have a real "word," i.e. a sequence of non-space
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* characters. wstart is now the start of the word,
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* afterw is the next character after the end.
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*/
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wordlen = afterw - wstart;
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nspaces = last_o_was_space ? 0 : (last_o_was_punct ? 2 : 1);
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if ((getcurx(msg_win) + nspaces + wordlen) >=
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getmaxx(msg_win) &&
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wordlen < (getmaxx(msg_win) / 3)) {
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/* wrap the line */
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waddch(msg_win, '\n');
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nspaces = 0;
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}
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/* output the word, preceded by spaces if necessary */
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while (nspaces-- > 0)
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waddch(msg_win, ' ');
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waddbytes(msg_win, wstart, wordlen);
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/* set up the 'last' state for the next time around */
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switch (afterw[-1]) {
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case '.':
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case '?':
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case '!':
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last_o_was_punct = 1;
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break;
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default:
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last_o_was_punct = 0;
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break;
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}
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last_o_was_space = 0;
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/* ... and do it all again! */
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}
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/* String ended with a newline. They really want a line break. */
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if (last_i_was_nl) {
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if (getcurx(msg_win) != 0)
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waddch(msg_win, '\n');
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last_o_was_punct = 0;
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last_o_was_space = 1;
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}
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out:
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wrefresh(msg_win);
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return ret;
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}
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void
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msg_display(msg msg_no, ...)
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{
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va_list ap;
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msg_clear();
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va_start(ap, msg_no);
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(void)_msg_vprintf(1, msg_string(msg_no), ap);
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va_end(ap);
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}
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void
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msg_display_add(msg msg_no, ...)
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{
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va_list ap;
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va_start(ap, msg_no);
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(void)_msg_vprintf(1, msg_string(msg_no), ap);
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va_end(ap);
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}
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static void
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_erase_ch(void)
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{
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int y, x;
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getyx(msg_win, y, x);
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x--;
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wmove(msg_win, y, x);
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waddch(msg_win, ' ');
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wmove(msg_win, y, x);
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}
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static void
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_msg_vprompt(const char *fmt, int flags, const char *def, char *val,
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size_t max_chars, va_list ap)
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{
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int ch;
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int len, pos, npos, off;
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int first;
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int txt_y, txt_x;
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char *ibuf = alloca(max_chars);
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int maxx;
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keypad(msg_win, TRUE);
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_msg_vprintf(0, fmt, ap);
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ibuf[0] = 0;
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if (def != NULL && *def) {
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if (flags & MSG_PROMPT_HIDE_DFLT)
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strlcpy(ibuf, def, max_chars);
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else {
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waddstr(msg_win, " [");
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waddstr(msg_win, def);
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waddstr(msg_win, "]");
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}
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}
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waddstr(msg_win, ": ");
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len = strlen(ibuf);
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pos = len;
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getyx(msg_win, txt_y, txt_x);
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maxx = getmaxx(msg_win) - txt_x - 1;
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off = 0;
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for (first = 1; ; first = 0) {
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if (flags & MSG_PROMPT_ECHO) {
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/* shift text right as we near the buffer start */
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if (pos - off < 4)
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off = pos - 4;
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/* keep offset to a minimum if we are at the end */
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if (pos == len)
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off = pos - maxx;
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if (off < 0 || len <= maxx)
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off = 0;
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/* shift text left as we near the buffer end */
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npos = pos + 4;
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if (npos > len)
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npos = len;
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if (npos - off > maxx)
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off = npos - maxx;
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/* calc. length to display */
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npos = len - off;
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if (npos > maxx)
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npos = maxx;
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mvwaddnstr(msg_win, txt_y, txt_x, ibuf + off, npos);
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wclrtoeol(msg_win);
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if (off != 0)
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mvwaddstr(msg_win, txt_y, txt_x, "+");
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wmove(msg_win, txt_y, txt_x + pos - off);
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wrefresh(msg_win);
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}
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ch = wgetch(msg_win);
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if (ch == '\n')
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break;
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switch (ch) {
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case KEY_BACKSPACE:
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case 'h' & 0x1f: case 0x7f: /* bs or del - delete left */
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if (first) {
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/* delete all of default string */
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len = pos = 0;
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break;
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}
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if (pos > 0) {
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memmove(ibuf + pos - 1, ibuf + pos, len - pos);
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len--;
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pos--;
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} else
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_msg_beep();
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break;
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case 'u' & 0x1f: /* ^U; line kill */
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/* kill line */
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len = pos = 0;
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break;
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case 'w' & 0x1f: /* ^W; word kill */
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/*
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* word kill kills the spaces and the 'word'
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* (non-spaces) last typed. the spaces before
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* the 'word' aren't killed.
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*/
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npos = pos;
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while (npos > 0 && isspace(ibuf[npos - 1]))
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npos--;
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while (npos > 0 && !isspace(ibuf[npos - 1]))
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npos--;
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memmove(ibuf + npos, ibuf + pos, len - pos);
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len -= pos - npos;
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pos = npos;
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break;
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case KEY_LEFT:
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if (pos > 0)
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pos--;
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break;
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case KEY_RIGHT:
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if (len == 0 && pos == 0 && def != NULL) {
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/* restore default! */
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strlcpy(ibuf, def, max_chars);
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len = pos = strlen(ibuf);
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break;
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}
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if (pos < len)
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pos++;
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break;
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default:
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if (len < (max_chars - 1) && isprint(ch)) {
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memmove(ibuf + pos + 1, ibuf + pos, len - pos);
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ibuf[pos++] = ch;
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len++;
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} else
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_msg_beep();
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break;
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}
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}
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|
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if (flags & MSG_PROMPT_ECHO) {
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mvwaddch(msg_win, txt_y, txt_x + len - off, '\n');
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last_o_was_punct = 0;
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last_o_was_space = 1;
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}
|
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|
|
/* copy the appropriate string to the output */
|
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if (len != 0) {
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ibuf[len] = '\0';
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strlcpy(val, ibuf, max_chars);
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} else if (def != NULL && val != def) {
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strlcpy(val, def, max_chars);
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}
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}
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|
|
void
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msg_prompt(msg msg_no, const char *def, char *val, size_t max_chars, ...)
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{
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va_list ap;
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msg_clear();
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|
|
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va_start(ap, max_chars);
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_msg_vprompt(msg_string(msg_no), MSG_PROMPT_ECHO,
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def, val, max_chars, ap);
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va_end(ap);
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}
|
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|
|
void
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msg_prompt_win(msg msg_no, int x, int y, int w, int h,
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const char *def, char *val, size_t max_chars, ...)
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{
|
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va_list ap;
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WINDOW *win, *svwin;
|
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int maxx, maxy;
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int msg_flags = MSG_PROMPT_ECHO | MSG_PROMPT_HIDE_DFLT;
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|
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maxx = getmaxx(msg_win);
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maxy = getmaxy(msg_win);
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if (w == 0) {
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va_start(ap, max_chars);
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w = vsnprintf(NULL, 0, msg_string(msg_no), ap);
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va_end(ap);
|
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if (def != NULL && *def != 0 && w + max_chars * 2 < maxx) {
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w += 2 + strlen(def) + 1;
|
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msg_flags &= ~MSG_PROMPT_HIDE_DFLT;
|
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}
|
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w += 1 + 2 + max_chars + 1;
|
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if (w > maxx) {
|
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if (!(msg_flags & MSG_PROMPT_HIDE_DFLT)) {
|
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w -= 2 + strlen(def) + 1;
|
|
msg_flags |= MSG_PROMPT_HIDE_DFLT;
|
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}
|
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w = maxx;
|
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}
|
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}
|
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|
|
if (x == -1)
|
|
x = (maxx - w) / 2 + 1;
|
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if (h < 3)
|
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h = 3;
|
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if (y < 3)
|
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y = (maxy - h) / 2;
|
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if (y + h > maxy)
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y = maxy - h;
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win = subwin(msg_win, h, w, y, x);
|
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if (win == NULL)
|
|
wprintw(msg_win, "msg_prompt_win: "
|
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"newwin(%d, %d, %d, %d) failed\n",
|
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h, w, y, x);
|
|
else {
|
|
wbkgd(win, getbkgd(msg_win));
|
|
wattrset(win, getattrs(msg_win));
|
|
box(win, 0, 0);
|
|
wrefresh(win);
|
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|
|
/* Change message window to be our little box */
|
|
svwin = msg_window(subwin(msg_win, h - 2, w - 2, y + 1, x + 1));
|
|
wbkgd(msg_win, getbkgd(win));
|
|
wattrset(msg_win, getattrs(win));
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|
|
msg_clear();
|
|
}
|
|
|
|
va_start(ap, max_chars);
|
|
_msg_vprompt(msg_string(msg_no), msg_flags, def, val, max_chars, ap);
|
|
va_end(ap);
|
|
|
|
if (win != NULL) {
|
|
wclear(win);
|
|
wrefresh(win);
|
|
/* Restore normal message window */
|
|
delwin(msg_window(svwin));
|
|
delwin(win);
|
|
}
|
|
}
|
|
|
|
void
|
|
msg_prompt_add(msg msg_no, const char *def, char *val, size_t max_chars, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, max_chars);
|
|
_msg_vprompt(msg_string(msg_no), MSG_PROMPT_ECHO, def, val, max_chars, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
void
|
|
msg_prompt_noecho(msg msg_no, const char *def, char *val, size_t max_chars, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
msg_clear();
|
|
|
|
va_start(ap, max_chars);
|
|
_msg_vprompt(msg_string(msg_no), 0, def, val, max_chars, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
void
|
|
msg_table_add(msg msg_no, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, msg_no);
|
|
(void)_msg_vprintf(0, msg_string(msg_no), ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
int
|
|
msg_row(void)
|
|
{
|
|
|
|
return getcury(msg_win) + getbegy(msg_win);
|
|
}
|