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teapot-spreadsheet/src/display.c

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#include <sys/types.h>
#include <sys/wait.h>
#include <assert.h>
#include <ctype.h>
#include <limits.h>
#ifdef ENABLE_UTF8
#include <ncursesw/curses.h>
#else
#include <curses.h>
#endif
#include <errno.h>
#include <pwd.h>
#include <termios.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
extern char *strdup(const char* s);
#include <string.h>
#include <unistd.h>
#ifdef NEED_BCOPY
#define memmove(dst,src,len) bcopy(src,dst,len)
#endif
#ifdef OLD_REALLOC
#define realloc(s,l) myrealloc(s,l)
#endif
#ifdef DMALLOC
#include "dmalloc.h"
#endif
#include "complete.h"
#include "default.h"
#include "display.h"
#include "eval.h"
#include "main.h"
#include "misc.h"
#include "sheet.h"
#include "utf8.h"
static Key wgetc(void);
/* redraw -- redraw whole screen */
static void redraw(void)
{
(void)touchwin(curscr);
(void)wrefresh(curscr);
}
/* do_attribute -- set cell attributes */
static int do_attribute(Sheet *cursheet)
{
int c;
Cell *cc = curcell(cursheet);
Style sc = getstyle(cursheet, cursheet->cur);
do
{
MarkState ms = getmarkstate(cursheet);
const char* prompt = _("Block attribute");
if (ms == UNMARKED) prompt = _("Cell attribute");
const char *mainmenu[] =
{ _("jJ)ustify"), _("fF)loats"), _("tT)ypeface"),
_("mM)isc"), _("lL)abel"), _("kLock)"), NULL
};
c = line_menu(prompt, mainmenu, 0);
/* There is a magic number "5" in the next line, presumably it represents
the selection of the lock attribute in the list of items above, in which
lock does indeed appear at index 5
*/
if (ms == UNMARKED && c != 5 && locked(cc))
line_msg(_("Cell attribute:"), _("Cell is locked"));
else
{
switch (c)
{
case -2: case -1: c = KEY_CANCEL; break;
case 0:
{
const char *justifymenu[] =
{ _("lL)eft"), _("rR)ight"), _("cC)entered"), NULL };
switch (c = line_menu(prompt, justifymenu, sc.adjust))
{
case -2: case -1: c = K_INVALID; break;
case 0: c = ADJUST_LEFT; break;
case 1: c = ADJUST_RIGHT; break;
case 2: c = ADJUST_CENTER; break;
default: assert(0);
}
break;
}
case 1:
{
const char *floatmenu[] =
{ _("dD)ecimal"), _("sS)cientific"), _("cC)ompact"),
_("hH)exact"), _("pP)recision"), NULL
};
switch (c = line_menu(prompt, floatmenu, sc.fform))
{
case -2: case -1: c = K_INVALID; break;
case 0: c = ADJUST_DECIMAL; break;
case 1: c = ADJUST_SCIENTIFIC; break;
case 2: c = ADJUST_COMPACT; break;
case 3: c = ADJUST_HEXACT; break;
case 4: c = ADJUST_PRECISION; break;
default: assert(0);
}
break;
}
case 2:
{
const char *typemenu[] =
{ _("bB)old"), _("uU)nderline"),
_("fF)oreground"), _("kBack)ground"), NULL };
switch (c = line_menu(prompt, typemenu, 0))
{
case -2: case -1: c = K_INVALID; break;
case 0: c = ADJUST_BOLD; break;
case 1: c = ADJUST_UNDERLINE; break;
case 2: c = ADJUST_FOREGROUND; break;
case 3: c = ADJUST_BACKGROUND; break;
default: assert(0);
}
break;
}
case 3:
{
const char *miscmenu[] =
{ _("sS)hadow"), _("iI)gnore"),
_("oO)utput special characters"), NULL
};
switch (c = line_menu(prompt, miscmenu, 0))
{
case -2: case -1: c = K_INVALID; break;
case 0: c = ADJUST_SHADOW; break;
case 1: c = ADJUST_IGNORE; break;
case 2: c = ADJUST_TRANSPARENT; break;
default: assert(0);
}
break;
}
case 4: c = ADJUST_LABEL; break;
case 5: c = ADJUST_LOCK; break;
default: assert(0);
}
}
} while (c == K_INVALID);
if (c == KEY_CANCEL) c = K_INVALID;
return c;
}
/* do_file -- file menu */
static int do_file(Sheet *cursheet)
{
int c = 0;
do {
const char *menu[] = { _("lL)oad"), _("sS)ave"), _("nN)ame"), NULL };
switch (c = line_menu(_("File:"), menu, 0)) {
case -2:
case -1: c = KEY_CANCEL; break;
case 0: c = K_LOADMENU; break;
case 1: c = K_SAVEMENU; break;
case 2: c = K_NAME; break;
default: assert(0);
}
} while (c == K_INVALID);
if (c == KEY_CANCEL) c = K_INVALID;
return c;
}
/* do_shell -- spawn a shell */
static int do_shell(void)
{
pid_t pid;
struct sigaction interrupt;
refresh();
interrupt.sa_flags = 0;
sigemptyset(&interrupt.sa_mask);
interrupt.sa_handler = SIG_IGN;
sigaction(SIGINT, &interrupt, (struct sigaction *)0);
sigaction(SIGQUIT, &interrupt, (struct sigaction *)0);
switch (pid=fork())
{
/* -1 */
case -1: line_msg(_("Spawn sub shell"),strerror(errno)); break;
/* 0 */
case 0:
{
const char *shell;
if ((shell=getenv("SHELL"))==(const char*)0)
{
struct passwd *pwd;
if ((pwd=getpwuid(getuid()))==(struct passwd*)0)
{
shell="/bin/sh";
}
else
{
shell=pwd->pw_shell;
}
}
line_msg((const char*)0,_("Sub shell started"));
move(LINES-1,0);
curs_set(1);
refresh();
reset_shell_mode();
puts("\n");
interrupt.sa_handler=SIG_DFL;
sigaction(SIGINT,&interrupt,(struct sigaction *)0);
sigaction(SIGQUIT,&interrupt,(struct sigaction *)0);
execl(shell,shell,(const char*)0);
exit(127);
break;
}
/* default */
default:
{
pid_t r;
int status;
while ((r=wait(&status))!=-1 && r!=pid);
reset_prog_mode();
interrupt.sa_handler=SIG_DFL;
sigaction(SIGINT,&interrupt,(struct sigaction *)0);
sigaction(SIGQUIT,&interrupt,(struct sigaction *)0);
clear();
refresh();
curs_set(0);
redraw();
}
}
return -1;
}
/* do_block -- block menu */
static int do_block(Sheet *cursheet)
{
int c = 0;
do
{
const char* block[] =
{ _("ecle)ar"), _("iI)nsert"), _("dD)elete"), _("mM)ove"),
_("cC)opy"), _("fF)ill"), _("sS)ort"), _("rMir)ror"), NULL
};
switch (c = line_menu(_("Block menu:"), block, 0))
{
case -2:
case -1: c = KEY_CANCEL; break;
case 0: c = BLOCK_CLEAR; break;
case 1: c = BLOCK_INSERT; break;
case 2: c = BLOCK_DELETE; break;
case 3: c = BLOCK_MOVE; break;
case 4: c = BLOCK_COPY; break;
case 5: c = BLOCK_FILL; break;
case 6: c = BLOCK_SORT; break;
case 7: c = BLOCK_MIRROR; break;
}
} while (c == K_INVALID);
if (c == KEY_CANCEL) c = K_INVALID;
return c;
}
int show_menu(Sheet *cursheet)
{
int c = K_INVALID;
do
{
const char* menu[] =
{ _("aA)ttributes"), _("wW)idth"), _("bB)lock"), _("fF)ile"),
_("gG)oto"), _("sS)hell"), _("vV)ersion"), _("qQ)uit"), NULL
};
switch (c=line_menu(_("Main menu:"),menu,0))
{
case -2:
case -1: c = KEY_CANCEL; break;
case 0: c = do_attribute(cursheet); break;
case 1: c = K_COLWIDTH; break;
case 2: c = do_block(cursheet); break;
case 3: c = do_file(cursheet); break;
case 4: c = K_GOTO; break;
case 5: do_shell(); c = KEY_CANCEL; break;
case 6: c = K_ABOUT; break;
case 7: c = K_QUIT; break;
default: assert(0);
}
} while (c == K_INVALID);
if (c == KEY_CANCEL) c = K_INVALID;
return c;
}
/* do_bg -- background teapot */
static void do_bg(void)
{
struct termios t;
if (tcgetattr(0,&t)==0 && t.c_cc[VSUSP]!=_POSIX_VDISABLE)
{
line_msg((const char*)0,_("Teapot stopped"));
move(LINES-1,0);
curs_set(1);
refresh();
reset_shell_mode();
puts("\n");
kill(getpid(),SIGSTOP);
clear();
refresh();
reset_prog_mode();
curs_set(0);
}
else line_msg((const char*)0,_("The susp character is undefined"));
}
void display_main(Sheet *cursheet)
{
Key k;
int quit = 0;
cursheet->maxx = COLS;
cursheet->maxy = LINES-1;
do
{
quit = 0;
update(cursheet);
k = wgetc();
wmove(stdscr, LINES-1, 0);
wclrtoeol(stdscr);
switch ((int)k)
{
case KEY_SUSPEND:
case '\032': do_bg(); k = K_INVALID; break;
case '\014': redraw(); k = K_INVALID; break;
case KEY_F(0):
case KEY_F(10): k = show_menu(cursheet); break;
}
} while (k == K_INVALID || !do_sheetcmd(cursheet, k, 0)
|| !doanyway(cursheet,_("Sheet modified, leave anyway?")));
}
#define CHANNEL_MAX 1000
typedef short CursesColor[3];
void display_init(Sheet *cursheet, bool imp_redraw)
{
initscr();
start_color();
init_color(DefaultCN[BACKGROUND], CHANNEL_MAX, CHANNEL_MAX, CHANNEL_MAX);
assume_default_colors(COLOR_BLACK, DefaultCN[BACKGROUND]);
if (debug_level > 1)
printf("Terminal has colors: %d, #colors:%d, #pairs:%d",
has_colors(), COLORS, COLOR_PAIRS);
curs_set(0);
noecho();
raw();
nonl();
keypad(stdscr,TRUE);
clear();
refresh();
#ifdef HAVE_TYPEAHEAD
if (imp_redraw) typeahead(-1);
#endif
/* allocate and initialize the palette */
assert(COLORS > 0);
if ((size_t)COLORS < cursheet->max_colors) cursheet->max_colors = (size_t)COLORS;
cursheet->palette = (void *)malloc(cursheet->max_colors*sizeof(CursesColor));
memset(cursheet->palette, '\0', cursheet->max_colors*sizeof(CursesColor));
CursesColor *palt = (CursesColor *)(cursheet->palette);
for (ColorNum i = 0; i <= DefaultCN[BACKGROUND]; ++i)
(void)color_content(i, &(palt[i][0]), &(palt[i][1]), &(palt[i][2]));
}
void display_end(Sheet* sheet)
{
curs_set(1);
echo();
noraw();
refresh();
endwin();
free(sheet->palette);
}
void redraw_cell(Sheet *sheet, const Location at )
{
update(sheet);
}
/* redraw_sheet -- draw a sheet with cell cursor */
void redraw_sheet(Sheet *sheet)
{
int x,y;
char pbuf[80];
char *buf=malloc(128);
size_t bufsz=128;
const char *label;
Location tmp;
Cell *cell;
MarkState ms;
char *err;
char moveonly;
assert(sheet != (Sheet*)0);
assert(IN_OCTANT(sheet->cur));
assert(sheet->offx >= 0);
assert(sheet->offy >= 0);
/* correct offsets to keep cursor visible */
while (shadowed(sheet, sheet->cur))
{
--(sheet->cur[X]);
assert(sheet->cur[X] >= 0);
}
if (sheet->cur[Y] - sheet->offy > sheet->maxy - 2 - (header ? 1 : 0))
sheet->offy = sheet->cur[Y] - sheet->maxy + 2 + (header ? 1 : 0);
if (sheet->cur[Y] < sheet->offy) sheet->offy = sheet->cur[Y];
if (sheet->cur[X] < sheet->offx) sheet->offx = sheet->cur[X];
size_t width = header ? 4 : 0;
bool again;
size_t col;
do
{
again = false;
col = 0;
for (x = sheet->offx;
width <= (size_t)(sheet->maxx);
width += columnwidth(sheet, x, sheet->cur[Z]), ++x, ++col);
--col;
sheet->width = col;
if (sheet->cur[X] != sheet->offx)
{
if (col==0) { ++sheet->offx; again = true; }
else if ((size_t)(sheet->cur[X] - sheet->offx) >= col) {
sheet->offx++; again = true;
}
}
} while (again);
short curcp = 1;
init_pair(curcp, DefaultCN[FOREGROUND], COLOR_YELLOW);
if (header) {
(void)wattron(stdscr,DEF_NUMBER);
/* draw x numbers */
for (width=4; width < (size_t)(sheet->maxx); ++width)
mvwaddch(stdscr, 0+sheet->oriy, sheet->orix+width,
(chtype)(unsigned char)' ');
for (width = 4, x = sheet->offx; width < (size_t)(sheet->maxx);
width += col, ++x)
{
short usecp = 0;
if (x == sheet->cur[X]) usecp = curcp;
col = columnwidth(sheet, x, sheet->cur[Z]);
if (bufsz<(size_t)(col*UTF8SZ+1)) buf=realloc(buf,bufsz=(size_t)(col*UTF8SZ+1));
snprintf(buf,bufsz,"%d",x);
if (mbslen(buf)>col) {
buf[col-1]='$';
buf[col]='\0';
}
adjust(CENTER,buf,(size_t)col);
assert((size_t)sheet->maxx >= width);
if ((size_t)(sheet->maxx)-width < col)
buf[(size_t)(sheet->maxx)-width] = '\0';
wcolor_set(stdscr, usecp, NULL);
mvwaddstr(stdscr, sheet->oriy, sheet->orix+width, buf);
wcolor_set(stdscr, 0, NULL);
}
/* draw y numbers */
for (y=1; y < sheet->maxy - 1; ++y) {
short usecp = 0;
CoordT realy = y - 1 + sheet->offy;
if (realy == sheet->cur[Y]) usecp = curcp;
wcolor_set(stdscr, usecp, NULL);
(void)mvwprintw(stdscr, y + (CoordT)(sheet->oriy), (CoordT)(sheet->orix),
"%-4d", y-1 + (int)(sheet->offy));
wcolor_set(stdscr, 0, NULL);
}
(void)wattroff(stdscr,DEF_NUMBER);
/* draw z number */
(void)mvwprintw(stdscr, (CoordT)(sheet->oriy), (CoordT)(sheet->orix),
"%3d", sheet->cur[Z]);
}
++curcp;
/* draw elements */
for (y = header ? 1 : 0; y < sheet->maxy - 1; ++y)
for (width = header ? 4 : 0, x = sheet->offx;
width < (size_t)sheet->maxx;
width += columnwidth(sheet, x, sheet->cur[Z]), ++x)
{
size_t size,realsize,fill, cutoff = 0;
int realx = x;
if (x == sheet->offx) {
Location fil;
fil[X] = realx;
fil[Y] = y - (header ? 1 : 0) + sheet->offy;
fil[Z] = sheet->cur[Z];
while (shadowed(sheet, fil)) {
--realx; fil[X] = realx;
cutoff += columnwidth(sheet, realx, sheet->cur[Z]);
}
}
tmp[X] = realx; tmp[Y] = y - (header ? 1 : 0) + sheet->offy;
tmp[Z] = sheet->cur[Z];
cell = safe_cell_at(sheet, tmp);
Style sc = getstyle(sheet, tmp);
if ((size = cellwidth(sheet, tmp)))
{
bool invert;
if (bufsz < (size*UTF8SZ+1))
buf = realloc(buf, bufsz=(size*UTF8SZ+1));
printvalue(buf, (size*UTF8SZ + 1), size, quote, sc.fform,
sc.precision, sheet, tmp);
adjust(sc.adjust, buf, size);
assert(size>=cutoff);
if (width + size - cutoff >= (size_t)(sheet->maxx))
{
*(buf + cutoff + (size_t)sheet->maxx - width) = '\0';
realsize = (size_t)(sheet->maxx) - width + cutoff;
}
else realsize = size;
ms = getmarkstate(sheet);
short usecp = 0;
ColorNum fg = sc.aspect[FOREGROUND];
if (fg == NO_COLOR_SET) fg = DefaultCN[FOREGROUND];
ColorNum bg = sc.aspect[BACKGROUND];
if (bg == NO_COLOR_SET) bg = DefaultCN[BACKGROUND];
while (usecp < curcp) {
short pfg, pbg;
pair_content(usecp, &pfg, &pbg);
if (fg == pfg && bg == pbg) break;
++usecp;
}
if (usecp == curcp) init_pair(curcp++, fg, bg);
wcolor_set(stdscr, usecp, NULL);
invert =
(ms != UNMARKED) && loc_in_box(tmp, sheet->mark1, sheet->mark2);
if (x == sheet->cur[X]
&& (y - (header ? 1 : 0) + sheet->offy == sheet->cur[Y]))
invert = (ms == MARKING) ? true : !invert;
if (invert) (void)wattron(stdscr,DEF_CELLCURSOR);
if (sc.bold) wattron(stdscr,A_BOLD);
if (sc.underline) wattron(stdscr,A_UNDERLINE);
(void)mvwaddstr(stdscr, y+(CoordT)(sheet->oriy), sheet->orix + width,
buf+cutoff);
for (fill=mbslen(buf+cutoff); fill<realsize; ++fill)
(void)waddch(stdscr,(chtype)(unsigned char)' ');
wcolor_set(stdscr, 0, NULL);
wstandend(stdscr);
}
}
/* draw contents of current element */
if (bufsz < (size_t)(sheet->maxx)*UTF8SZ + 1)
buf = realloc(buf, bufsz = (size_t)(sheet->maxx)*UTF8SZ + 1);
label = getlabel(curcell(sheet));
assert(label != (const char*)0);
moveonly = sheet->moveonly ? *_("V") : *_("E");
if (*label=='\0')
sprintf(pbuf, "%c @(%d,%d,%d)=", moveonly,
sheet->cur[X], sheet->cur[Y], sheet->cur[Z]);
else sprintf(pbuf, "%c @(%s)=", moveonly, label);
(void)strncpy(buf,pbuf,bufsz);
buf[bufsz-1] = 0;
if ((err=geterror(sheet,sheet->cur)) != (const char*)0)
{
(void)strncpy(buf, err, bufsz);
free(err);
}
else
{
cell = curcell(sheet);
Token bc = gettok(cell, BASE_CONT);
printtok(buf+strlen(buf), bufsz-strlen(buf), 0, QUOTE_STRING,
FLT_COMPACT, -1, TRUNCATED_ERROR, &bc);
Token ic = gettok(cell, ITER_CONT);
if (ic.type != EMPTY && mbslen(buf) < (size_t)(sheet->maxx + 1 - 4))
{
strcat(buf," -> ");
printtok(buf+strlen(buf), bufsz-strlen(buf), 0, QUOTE_STRING,
FLT_COMPACT, -1, TRUNCATED_ERROR, &ic);
}
}
*mbspos(buf, sheet->maxx) = 0;
(void)mvwaddstr(stdscr, sheet->oriy+(size_t)(sheet->maxy)-1, sheet->orix, buf);
for (col = mbslen(buf); col < (size_t)sheet->maxx; ++col)
(void)waddch(stdscr, ' ');
}
/* line_file -- line editor function for file name entry */
const char *line_file(const char *file, const char *pattern, const char *title, int create)
{
static char buf[PATH_MAX] = "";
int rc;
size_t dummy1 = 0, dummy2 = 0;
if (file) strncpy(buf, file, sizeof(buf));
buf[sizeof(buf)-1] = 0;
rc = line_edit((Sheet*)0, buf, sizeof(buf), title, &dummy1, &dummy2);
if (rc < 0) return NULL;
return buf;
}
/* line_edit -- line editor function */
int line_edit(Sheet *sheet, char *buf, size_t size, const char *prompt,
size_t *x, size_t *offx)
{
char *src, *dest;
assert(buf != NULL);
assert(prompt != NULL);
assert(x != (size_t*)0);
assert(offx != (size_t*)0);
(void)curs_set(1);
bool insert = true;
int mx = COLS;
CoordT promptlen = (CoordT)(mbslen(prompt)+1);
(void)mvwaddstr(stdscr,LINES-1,0,prompt); (void)waddch(stdscr,(chtype)(unsigned char)' ');
int c;
do {
/* correct offx so cursor stays visible */
if (*x < *offx) *offx = *x;
if ((CoordT)(*x - *offx) > (mx-promptlen-1))
*offx = *x - (size_t)mx + (size_t)promptlen + 1;
/* display buffer */
(void)wmove(stdscr, LINES-1, promptlen);
src = mbspos(buf, (int)(*offx));
dest = mbspos(buf, (int)(*offx) + COLS - promptlen);
int i = 0;
for (; *src && src < dest; ++i, ++src)
(void)waddch(stdscr, (chtype)(unsigned char)(*src));
if (i != mx) (void)wclrtoeol(stdscr);
/* show cursor */
(void)wmove(stdscr, LINES-1, (CoordT)(*x-*offx) + promptlen);
src = dest = mbspos(buf, (int)(*x));
c = wgetc();
if (sheet != (Sheet*)0 && sheet->moveonly) switch (c) {
/* ^o -- switch back to line editor */
case '\t':
case '\017': sheet->moveonly=0; break;
/* v -- insert value of current cell */
case 'v': {
char valbuf[1024];
printvalue(valbuf, sizeof(valbuf), 0, QUOTE_STRING,
FLT_COMPACT, 0, sheet, sheet->cur);
if (strlen(buf)+strlen(valbuf) >= (size-1)) break;
(void)memmove(src+strlen(valbuf), src, strlen(src));
(void)memcpy(src, valbuf, strlen(valbuf));
(*x) += mbslen(valbuf);
break;
}
/* p -- insert position of current cell */
case 'p': {
char valbuf[1024];
sprintf(valbuf, "(%d,%d,%d)",
sheet->cur[X], sheet->cur[Y], sheet->cur[Z]);
if (strlen(buf)+strlen(valbuf) >= (size-1)) break;
(void)memmove(src+strlen(valbuf), src, strlen(src));
(void)memcpy(src, valbuf, strlen(valbuf));
(*x) += mbslen(valbuf);
break;
}
/* default -- move around in sheet */
default:
(void)do_sheetcmd(sheet,c,1);
redraw_sheet(sheet);
break;
} else switch (c) {
/* UP */
case K_UP: break;
/* LEFT */
case K_LEFT: if (*x > 0) (*x)--; break;
/* RIGHT */
case K_RIGHT: if (*x < mbslen(buf)) (*x)++; break;
/* BACKSPACE */
case K_BACKSPACE:
if (*x > 0) {
memmove(mbspos(src, -1), src, strlen(src)+1);
(*x)--;
}
break;
/* C-i -- file name completion */
case '\t':
completefile(buf, src, size);
break;
/* DC */
case K_DC:
src = mbspos(dest, 1);
if (*x < strlen(buf)) memmove(dest, src, strlen(src)+1);
break;
/* HOME */
case K_HOME:
*x = 0;
break;
/* END */
case K_END:
*x = mbslen(buf);
break;
/* IC */
case KEY_IC:
insert = !insert;
break;
/* EIC */
case KEY_EIC:
insert = false;
break;
/* control t */
case '\024':
if (*x > 0) {
dest = mbspos(src, -1);
if (*x == mbslen(buf)) {
src = dest;
dest = mbspos(src, -1);
(*x)--;
}
char *end = mbspos(src, 1);
while (src != end) {
char k = *src;
memmove(dest+1, dest, src-dest);
*dest = k;
src++;
dest++;
}
(*x)++;
}
break;
/* control backslash */
case '\034': {
int level;
char open = 0, close = 0, dir = 1;
switch (*dest) {
case ')': dir = -1;
case '(': open = '('; close = ')'; break;
case '}': dir = -1;
case '{': open = '{'; close = '}'; break;
case ']': dir = -1;
case '[': open = '['; close = ']'; break;
default: break;
}
level = dir;
while (*dest && level) {
dest += dir;
if (*dest == open) level--;
else if (*dest == close) level++;
}
if (!level) *x = mbslen(buf)-mbslen(dest);
break;
}
/* DL */
case KEY_DL:
*src = '\0';
break;
/* control o */
case '\017':
if (sheet!=(Sheet*)0) sheet->moveonly=1;
break;
/* default */
default: {
if (((unsigned int)c) < ' ' || ((unsigned int)c) >= 256) break;
bool iscont = is_mbcont((unsigned char)c);
if (strlen(buf) >= (size-1)) {
if (iscont) {
dest = mbspos(src, -1);
memmove(dest, src, strlen(src)+1);
}
break;
}
if (insert || iscont) memmove(src+1, src, strlen(src)+1);
else {
if (is_mbchar((unsigned char)(*src)))
memmove(src+1, mbspos(src, 1), strlen(mbspos(src, 1))+1);
if (!*src) *(src+1) = '\0';
}
*src = (char)c;
if (!iscont) (*x)++;
break;
}
}
} while (c != K_ENTER && c != KEY_CANCEL
&& (c != K_UP || (sheet!=(Sheet*)0 && sheet->moveonly)));
if (sheet) sheet->moveonly = false;
(void)curs_set(0);
(void)wmove(stdscr, LINES-1, 0);
(void)wclrtoeol(stdscr);
switch (c) {
case KEY_CANCEL: return -1;
case K_UP: return -2;
default: return 0;
}
}
/* line_ok -- one line yes/no menu */
int line_ok(const char *prompt, int curx)
{
assert(curx == 0 || curx == 1);
const char* menu[] = { _("nN)o"), _("yY)es"), NULL };
return line_menu(prompt, menu, curx);
}
/* line_binary -- two choices with cancel */
int line_binary(const char *prompt, const char* op1, const char* op2, int curx)
{
assert(curx == 0 || curx == 1);
const char* menu[] = { _("cC)ancel"), op1, op2, NULL };
return line_menu(prompt, menu, curx+1) - 1;
}
/* line_menu -- one line menu */
/* Notes */
/*
The choices are terminated by the last element having a (const char*)str
field. Each item can be chosen by tolower(*str) or by the key stored in
the c field. Use a space as first character of str, if you only want the
function key to work.
*/
int line_menu(const char *prompt, const char **choice, int curx)
{
assert(prompt != NULL);
assert(choice != (const char **)0);
assert(curx >= 0);
mvwaddstr(stdscr,LINES-1,0,prompt);
size_t promptlen = mbslen(prompt);
int maxx = 0;
while (choice[maxx] != NULL) ++maxx;
int offx = 0;
int c;
do
{
int x;
(void)wmove(stdscr, LINES-1, (int)promptlen);
/* correct offset so choice is visible */
if (curx <= offx) offx = curx;
else do
{
size_t width = promptlen;
x = offx;
while (x < maxx && width + mbslen(choice[x]+1) + 1 <= (size_t)COLS)
{
width += mbslen(choice[x]+1) + 1;
++x;
}
--x;
if (x < curx) ++offx;
} while (x < curx);
/* show visible choices */
size_t width = promptlen;
for (x = offx; x < maxx && width + mbslen(choice[x]+1) + 1 <= (size_t)COLS;
width += mbslen(choice[x]+1) + 1, ++x)
{
(void)waddch(stdscr, (chtype)(unsigned char)' ');
if (x == curx) (void)wattron(stdscr, DEF_MENU);
(void)waddstr(stdscr, (char*)(choice[x]+1));
if (x == curx) (void)wattroff(stdscr,DEF_MENU);
}
if (width < (size_t)COLS) (void)wclrtoeol(stdscr);
switch (c = wgetc())
{
/* KEY_LEFT -- move to previous item */
case K_BACKSPACE:
case K_LEFT: if (curx > 0) --curx; else curx = maxx-1; break;
/* Space, Tab, KEY_RIGHT -- move to next item */
case ' ':
case '\t':
case K_RIGHT: if (curx < (maxx-1)) ++curx; else curx = 0; break;
/* default -- search choice keys */
default:
{
for (int i = 0; i < maxx; ++i)
if (c < 256 && tolower(c) == choice[i][0])
{
c = K_ENTER;
curx = i;
}
}
}
}
while (c != K_ENTER && c != K_DOWN && c != KEY_CANCEL && c != K_UP);
(void)wmove(stdscr, LINES-1, 0);
(void)wclrtoeol(stdscr);
switch (c)
{
case KEY_CANCEL: return -1;
case K_UP: return -2;
default: return curx;
}
}
/* line_msg -- one line message which will be cleared by someone else */
void line_msg(const char *prompt, const char *msg)
{
int width;
assert(msg!=(const char*)0);
if (!*msg) msg = _("Use F0, F10 or / for menu");
if (!batch)
{
width=1;
mvwaddch(stdscr,LINES-1,0,(chtype)(unsigned char)'[');
if (prompt!=(const char*)0)
{
for (; width<COLS && *prompt!='\0'; ++width,++prompt) (void)waddch(stdscr,(chtype)(unsigned char)(*prompt));
if (width<COLS) { (void)waddch(stdscr,(chtype)(unsigned char)' '); ++width; }
}
for (; width<COLS && *msg!='\0'; ++width,++msg) (void)waddch(stdscr,(chtype)(unsigned char)(*msg));
if (width<COLS) (void)waddch(stdscr,(chtype)(unsigned char)']');
if (width+1<COLS) (void)wclrtoeol(stdscr);
}
else
{
if (prompt) fprintf(stderr,_("line %u: %s %s\n"),batchln,prompt,msg);
else fprintf(stderr,_("line %u: %s\n"),batchln,msg);
exit(1);
}
}
void show_text(const char *text)
{
int i;
char *end, *stripped;
stripped = striphtml(text);
text = stripped-1;
while (text) {
(void)clear();
for (i = 0; i < LINES-2 && text; i++) {
end = strchr(++text, '\n');
if (*text == '\f') break;
if (end) *end = 0;
(void)move(i, (COLS - (CoordT)mbslen(text))/2);
(void)addstr(text);
text = end;
}
(void)move(i+1, (COLS-29)/2); (void)addstr(_("[ Press any key to continue ]"));
(void)refresh();
(void)getch();
}
free(stripped);
}
/* keypressed -- get keypress, if there is one */
bool keypressed(void)
{
(void)nodelay(stdscr, TRUE);
bool result = (getch() != ERR);
nodelay(stdscr, FALSE);
return result;
}
/* wgetc */
static Key wgetc(void)
{
int c;
doupdate();
refresh();
switch (c=wgetch(stdscr))
{
/* LEFT */
case KEY_LEFT:
case '\02': return K_LEFT;
/* RIGHT */
case KEY_RIGHT:
case '\06': return K_RIGHT;
/* UP */
case KEY_UP:
case '\020': return K_UP;
/* DOWN */
case KEY_DOWN:
case '\016': return K_DOWN;
/* BACKSPACE */
case KEY_BACKSPACE:
case '\010': return K_BACKSPACE;
/* DC */
case KEY_DC:
case '\04':
case '\177': return K_DC;
/* CANCEL */
case '\03':
case '\07': return KEY_CANCEL;
/* ENTER */
case KEY_ENTER:
case '\r':
case '\n': return K_ENTER;
/* HOME */
case KEY_HOME:
case '\01': return K_HOME;
/* END */
case KEY_END:
case '\05': return K_END;
/* DL */
case '\013': return KEY_DL;
/* NPAGE */
case KEY_NPAGE:
case '\026': return K_NPAGE;
/* PPAGE */
case KEY_PPAGE: return K_PPAGE;
/* Control Y, copy */
case '\031': return K_COPY;
/* Control R, recalculate sheet */
case '\022': return K_RECALC;
/* Control S, clock sheet */
case '\023': return K_CLOCK;
/* Control X, get one more key */
case '\030':
{
switch (wgetch(stdscr))
{
/* C-x < -- BPAGE */
case KEY_PPAGE:
case '<': return K_BPAGE;
/* C-x > -- FPAGE */
case KEY_NPAGE:
case '>': return K_FPAGE;
/* C-x C-c -- QUIT */
case '\03': return K_QUIT;
/* C-x C-s -- SAVE */
case '\023': return K_SAVE;
/* C-x C-r -- LOAD */
case '\022': return K_LOAD;
/* default -- INVALID, general invalid value */
default: return K_INVALID;
}
}
/* ESC, get one more key */
case '\033':
{
switch (wgetch(stdscr))
{
/* M-v -- PPAGE */
case 'v': return K_PPAGE;
/* M-Enter -- MENTER */
case KEY_ENTER:
case '\r':
case '\n': return K_MENTER;
/* M-s -- edit style expression */
case 's': return K_EDIT_STYLE_EXPR;
/* M-z -- SAVEQUIT */
case 'z': return K_SAVEQUIT;
/* default -- INVALID, general invalid value */
default: return K_INVALID;
}
}
/* _("Load sheet file format:") */
case KEY_F(2): return K_LOADMENU;
/* _("Save sheet file format:") */
case KEY_F(3): return K_SAVEMENU;
/* default */
default: return c;
}
}
void find_helpfile(char *buf, int size, const char *argv0)
{
strncpy(buf, HELPFILE, size);
buf[size-1] = 0;
}
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