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/****************************************************************************
* Copyright 2018,2020 Thomas E. Dickey *
* Copyright 2009-2010,2012 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/*
* $Id: linedata.h,v 1.8 2020/02/02 23:34:34 tom Exp $
*
* Utility functions for reading a line of text from a file.
*/
#ifndef LINEDATA_H_incl
#define LINEDATA_H_incl 1
#include <test.priv.h>
#define isQUIT(c) ((c) == QUIT || (c) == ESCAPE)
#define key_RECUR CTRL('W')
#define key_NEWLINE CTRL('N')
#define key_BACKSPACE '\b'
static FILE *linedata;
static void
failed(const char *s)
{
perror(s);
ExitProgram(EXIT_FAILURE);
}
static void
init_linedata(const char *name)
{
if ((linedata = fopen(name, "r")) == 0) {
failed(name);
}
}
static int
read_linedata(WINDOW *work)
{
int result;
if (linedata != 0) {
result = fgetc(linedata);
if (result == EOF) {
fclose(linedata);
linedata = 0;
result = read_linedata(work);
} else {
wrefresh(work);
if (result == '\n') {
result = key_NEWLINE;
}
}
} else {
#ifdef WIDE_LINEDATA
wint_t ch;
int code;
result = ERR;
while ((code = wget_wch(work, &ch)) != ERR) {
if (code == KEY_CODE_YES) {
switch (ch) {
case KEY_DOWN:
result = key_NEWLINE;
break;
case KEY_BACKSPACE:
result = key_BACKSPACE;
break;
default:
beep();
continue;
}
} else {
result = (int) ch;
break;
}
}
#else
result = wgetch(work);
#endif
}
return result;
}
#endif /* LINEDATA_H_incl */
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