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Improved readability of topline state management.

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This commit is contained in:
Bart House
2019-07-10 22:16:08 -07:00
parent 3a31587ca9
commit 7795d82be6
4 changed files with 45 additions and 34 deletions
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6
include/wintty.h
View File

@@ -52,6 +52,12 @@ struct WinDesc {
#define WIN_STOP 1 /* for NHW_MESSAGE; stops output */
#define WIN_LOCKHISTORY 2 /* for NHW_MESSAGE; suppress history updates */
/* topline states */
#define TOPLINE_EMPTY 0 /* empty */
#define TOPLINE_NEED_MORE 1 /* non-empty, need --More-- */
#define TOPLINE_NON_EMPTY 2 /* non-empty, no --More-- required */
#define TOPLINE_SPECIAL_PROMPT 3 /* special prompt state */
/* descriptor for tty-based displays -- all the per-display data */
struct DisplayDesc {
short rows, cols; /* width and height of tty display */

6
win/tty/getline.c
View File

@@ -52,10 +52,10 @@ getlin_hook_proc hook;
struct WinDesc *cw = wins[WIN_MESSAGE];
boolean doprev = 0;
if (ttyDisplay->toplin == 1 && !(cw->flags & WIN_STOP))
if (ttyDisplay->toplin == TOPLINE_NEED_MORE && !(cw->flags & WIN_STOP))
more();
cw->flags &= ~WIN_STOP;
ttyDisplay->toplin = 3; /* special prompt state */
ttyDisplay->toplin = TOPLINE_SPECIAL_PROMPT;
ttyDisplay->inread++;
/* issue the prompt */
@@ -193,7 +193,7 @@ getlin_hook_proc hook;
} else
tty_nhbell();
}
ttyDisplay->toplin = 2; /* nonempty, no --More-- required */
ttyDisplay->toplin = TOPLINE_NON_EMPTY;
ttyDisplay->inread--;
clear_nhwindow(WIN_MESSAGE); /* clean up after ourselves */

24
win/tty/topl.c
View File

@@ -138,7 +138,7 @@ const char *str;
end_glyphout(); /* in case message printed during graphics output */
putsyms(str);
cl_end();
ttyDisplay->toplin = 1;
ttyDisplay->toplin = TOPLINE_NEED_MORE;
if (ttyDisplay->cury && otoplin != 3)
more();
}
@@ -151,7 +151,7 @@ const char *str;
struct WinDesc *cw = wins[WIN_MESSAGE];
if (!(cw->flags & WIN_STOP)) {
if (ttyDisplay->cury && ttyDisplay->toplin == 2)
if (ttyDisplay->cury && ttyDisplay->toplin == TOPLINE_NON_EMPTY)
tty_clear_nhwindow(WIN_MESSAGE);
cw->curx = cw->cury = 0;
@@ -159,8 +159,8 @@ const char *str;
cl_end();
addtopl(str);
if (ttyDisplay->cury && ttyDisplay->toplin != 3)
ttyDisplay->toplin = 2;
if (ttyDisplay->cury && ttyDisplay->toplin != TOPLINE_SPECIAL_PROMPT)
ttyDisplay->toplin = TOPLINE_NON_EMPTY;
}
}
@@ -196,7 +196,7 @@ const char *s;
tty_curs(BASE_WINDOW, cw->curx + 1, cw->cury);
putsyms(s);
cl_end();
ttyDisplay->toplin = 1;
ttyDisplay->toplin = TOPLINE_NEED_MORE;
}
void
@@ -236,7 +236,7 @@ more()
home();
cl_end();
}
ttyDisplay->toplin = 0;
ttyDisplay->toplin = TOPLINE_EMPTY;
ttyDisplay->inmore = 0;
}
@@ -252,7 +252,7 @@ register const char *bp;
/* If there is room on the line, print message on same line */
/* But messages like "You die..." deserve their own line */
n0 = strlen(bp);
if ((ttyDisplay->toplin == 1 || (cw->flags & WIN_STOP))
if ((ttyDisplay->toplin == TOPLINE_NEED_MORE || (cw->flags & WIN_STOP))
&& cw->cury == 0
&& n0 + (int) strlen(g.toplines) + 3 < CO - 8 /* room for --More-- */
&& (notdied = strncmp(bp, "You die", 7)) != 0) {
@@ -263,9 +263,9 @@ register const char *bp;
addtopl(bp);
return;
} else if (!(cw->flags & WIN_STOP)) {
if (ttyDisplay->toplin == 1) {
if (ttyDisplay->toplin == TOPLINE_NEED_MORE) {
more();
} else if (cw->cury) { /* for when flags.toplin == 2 && cury > 1 */
} else if (cw->cury) { /* for toplin == TOPLINE_NON_EMPTY && cury > 1 */
docorner(1, cw->cury + 1); /* reset cury = 0 if redraw screen */
cw->curx = cw->cury = 0; /* from home--cls() & docorner(1,n) */
}
@@ -381,10 +381,10 @@ char def;
char prompt[BUFSZ];
yn_number = 0L;
if (ttyDisplay->toplin == 1 && !(cw->flags & WIN_STOP))
if (ttyDisplay->toplin == TOPLINE_NEED_MORE && !(cw->flags & WIN_STOP))
more();
cw->flags &= ~WIN_STOP;
ttyDisplay->toplin = 3; /* special prompt state */
ttyDisplay->toplin = TOPLINE_SPECIAL_PROMPT;
ttyDisplay->inread++;
if (resp) {
char *rb, respbuf[QBUFSZ];
@@ -531,7 +531,7 @@ char def;
dumplogmsg(g.toplines);
#endif
ttyDisplay->inread--;
ttyDisplay->toplin = 2;
ttyDisplay->toplin = TOPLINE_NON_EMPTY;
if (ttyDisplay->intr)
ttyDisplay->intr--;
if (wins[WIN_MESSAGE]->cury)

43
win/tty/wintty.c
View File

@@ -348,7 +348,7 @@ int sig_unused UNUSED;
new_status_window();
if (u.ux) {
i = ttyDisplay->toplin;
ttyDisplay->toplin = 0;
ttyDisplay->toplin = TOPLINE_EMPTY;
docrt();
bot();
ttyDisplay->toplin = i;
@@ -436,7 +436,7 @@ char **argv UNUSED;
/* set up tty descriptor */
ttyDisplay = (struct DisplayDesc *) alloc(sizeof (struct DisplayDesc));
ttyDisplay->toplin = 0;
ttyDisplay->toplin = TOPLINE_EMPTY;
ttyDisplay->rows = hgt;
ttyDisplay->cols = wid;
ttyDisplay->curx = ttyDisplay->cury = 0;
@@ -1652,12 +1652,12 @@ winid window;
switch (cw->type) {
case NHW_MESSAGE:
if (ttyDisplay->toplin) {
if (ttyDisplay->toplin != TOPLINE_EMPTY) {
home();
cl_end();
if (cw->cury)
docorner(1, cw->cury + 1);
ttyDisplay->toplin = 0;
ttyDisplay->toplin = TOPLINE_EMPTY;
}
break;
case NHW_STATUS:
@@ -2353,12 +2353,13 @@ boolean blocking; /* with ttys, all windows are blocking */
switch (cw->type) {
case NHW_MESSAGE:
if (ttyDisplay->toplin == 1) {
if (ttyDisplay->toplin == TOPLINE_NEED_MORE) {
more();
ttyDisplay->toplin = 1; /* more resets this */
ttyDisplay->toplin = TOPLINE_NEED_MORE; /* more resets this */
tty_clear_nhwindow(window);
/* nhassert(ttyDisplay->toplin == TOPLINE_EMPTY); */
} else
ttyDisplay->toplin = 0;
ttyDisplay->toplin = TOPLINE_EMPTY;
cw->curx = cw->cury = 0;
if (!cw->active)
iflags.window_inited = TRUE;
@@ -2366,8 +2367,8 @@ boolean blocking; /* with ttys, all windows are blocking */
case NHW_MAP:
end_glyphout();
if (blocking) {
if (!ttyDisplay->toplin)
ttyDisplay->toplin = 1;
if (ttyDisplay->toplin != TOPLINE_EMPTY)
ttyDisplay->toplin = TOPLINE_NEED_MORE;
tty_display_nhwindow(WIN_MESSAGE, TRUE);
return;
}
@@ -2397,7 +2398,7 @@ boolean blocking; /* with ttys, all windows are blocking */
cw->offx = 0;
if (cw->type == NHW_MENU)
cw->offy = 0;
if (ttyDisplay->toplin == 1)
if (ttyDisplay->toplin == TOPLINE_NEED_MORE)
tty_display_nhwindow(WIN_MESSAGE, TRUE);
#ifdef H2344_BROKEN
if (cw->maxrow >= (int) ttyDisplay->rows
@@ -2413,7 +2414,7 @@ boolean blocking; /* with ttys, all windows are blocking */
cl_eos();
} else
clear_screen();
ttyDisplay->toplin = 0;
ttyDisplay->toplin = TOPLINE_EMPTY;
} else {
if (WIN_MESSAGE != WIN_ERR)
tty_clear_nhwindow(WIN_MESSAGE);
@@ -2442,8 +2443,9 @@ winid window;
switch (cw->type) {
case NHW_MESSAGE:
if (ttyDisplay->toplin)
if (ttyDisplay->toplin != TOPLINE_EMPTY)
tty_display_nhwindow(WIN_MESSAGE, TRUE);
/* nhassert(ttyDisplay->toplin == TOPLINE_EMPTY); */
/*FALLTHRU*/
case NHW_STATUS:
case NHW_BASE:
@@ -3194,10 +3196,11 @@ const char *mesg;
response to a prompt, we'll assume that the display is up to date */
tty_putstr(WIN_MESSAGE, 0, mesg);
/* if `mesg' didn't wrap (triggering --More--), force --More-- now */
if (ttyDisplay->toplin == 1) {
if (ttyDisplay->toplin == TOPLINE_NEED_MORE) {
more();
ttyDisplay->toplin = 1; /* more resets this */
ttyDisplay->toplin = TOPLINE_NEED_MORE; /* more resets this */
tty_clear_nhwindow(WIN_MESSAGE);
/* nhassert(ttyDisplay->toplin == TOPLINE_EMPTY); */
}
/* normally <ESC> means skip further messages, but in this case
it means cancel the current prompt; any other messages should
@@ -3237,7 +3240,7 @@ tty_wait_synch()
(void) fflush(stdout);
} else if (ttyDisplay->inread > g.program_state.gameover) {
/* this can only happen if we were reading and got interrupted */
ttyDisplay->toplin = 3;
ttyDisplay->toplin = TOPLINE_SPECIAL_PROMPT;
/* do this twice; 1st time gets the Quit? message again */
(void) tty_doprev_message();
(void) tty_doprev_message();
@@ -3570,8 +3573,9 @@ tty_nhgetch()
i = '\033'; /* map NUL to ESC since nethack doesn't expect NUL */
else if (i == EOF)
i = '\033'; /* same for EOF */
if (ttyDisplay && ttyDisplay->toplin == 1)
ttyDisplay->toplin = 2;
/* topline has been seen - we can clear need for more */
if (ttyDisplay && ttyDisplay->toplin == TOPLINE_NEED_MORE)
ttyDisplay->toplin = TOPLINE_NON_EMPTY;
#ifdef TTY_TILES_ESCCODES
{
/* hack to force output of the window select code */
@@ -3613,8 +3617,9 @@ int *x UNUSED, *y UNUSED, *mod UNUSED;
i = ntposkey(x, y, mod);
if (!i && mod && (*mod == 0 || *mod == EOF))
i = '\033'; /* map NUL or EOF to ESC, nethack doesn't expect either */
if (ttyDisplay && ttyDisplay->toplin == 1)
ttyDisplay->toplin = 2;
/* topline has been seen - we can clear need for more */
if (ttyDisplay && ttyDisplay->toplin == TOPLINE_NEED_MORE)
ttyDisplay->toplin = TOPLINE_NON_EMPTY;
#else /* !WIN32CON */
i = tty_nhgetch();
#endif /* ?WIN32CON */