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Push curses exit() and init() to functions

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This commit is contained in:
Arun Prakash Jana 2017-06-15 21:34:47 +05:30
parent 6d20178881
commit 7a2b1babdd
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GPG key ID: A75979F35C080412
1 changed files with 53 additions and 59 deletions
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112
nnn.c
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@ -343,6 +343,35 @@ all_dots(const char *ptr)
return count;
}
static void
initcurses(void)
{
if (initscr() == NULL) {
char *term = getenv("TERM");
if (term != NULL)
fprintf(stderr, "error opening terminal: %s\n", term);
else
fprintf(stderr, "failed to initialize curses\n");
exit(1);
}
cbreak();
noecho();
nonl();
intrflush(stdscr, FALSE);
keypad(stdscr, TRUE);
curs_set(FALSE); /* Hide cursor */
start_color();
use_default_colors();
timeout(1000); /* One second */
}
static void
exitcurses(void)
{
endwin(); /* Restore terminal */
}
/*
* Spawns a child process. Behaviour can be controlled using flag:
* Limited to 2 arguments to a program
@ -351,6 +380,7 @@ all_dots(const char *ptr)
* - 0b10: do not wait in parent for child process e.g. DE file manager
* - 0b100: suppress stdout and stderr
* - 0b1000: restore default SIGINT handler
* - 0b10000000: exit curses mode
*/
static void
spawn(char *file, char *arg1, char *arg2, char *dir, unsigned char flag)
@ -358,17 +388,20 @@ spawn(char *file, char *arg1, char *arg2, char *dir, unsigned char flag)
pid_t pid;
int status;
if (flag & 0b10000000)
exitcurses();
pid = fork();
if (pid == 0) {
if (dir != NULL)
status = chdir(dir);
/* Show a marker (to indicate nnn spawned shell) */
if (flag & 0x01)
if (flag & 0b1)
printf("\n +-++-++-+\n | n n n |\n +-++-++-+\n\n");
/* Suppress stdout and stderr */
if (flag & 0x04) {
if (flag & 0b100) {
int fd = open("/dev/null", O_WRONLY, 0200);
dup2(fd, 1);
@ -376,16 +409,19 @@ spawn(char *file, char *arg1, char *arg2, char *dir, unsigned char flag)
close(fd);
}
if (flag & 0x08)
if (flag & 0b1000)
signal(SIGINT, SIG_DFL);
execlp(file, file, arg1, arg2, NULL);
_exit(1);
} else {
if (!(flag & 0x02))
if (!(flag & 0b10))
/* Ignore interruptions */
while (waitpid(pid, &status, 0) == -1)
DPRINTF_D(status);
DPRINTF_D(pid);
if (flag & 0b10000000)
initcurses();
}
}
@ -557,35 +593,6 @@ entrycmp(const void *va, const void *vb)
return xstricmp(pa->name, pb->name);
}
static void
initcurses(void)
{
if (initscr() == NULL) {
char *term = getenv("TERM");
if (term != NULL)
fprintf(stderr, "error opening terminal: %s\n", term);
else
fprintf(stderr, "failed to initialize curses\n");
exit(1);
}
cbreak();
noecho();
nonl();
intrflush(stdscr, FALSE);
keypad(stdscr, TRUE);
curs_set(FALSE); /* Hide cursor */
start_color();
use_default_colors();
timeout(1000); /* One second */
}
static void
exitcurses(void)
{
endwin(); /* Restore terminal */
}
/* Messages show up at the bottom */
static void
printmsg(char *msg)
@ -1304,8 +1311,10 @@ show_stats(char *fpath, char *fname, struct stat *sb)
close(fd);
exitcurses();
get_output(NULL, 0, "cat", tmp, NULL, 1);
unlink(tmp);
initcurses();
return 0;
}
@ -1318,7 +1327,6 @@ show_mediainfo(char *fpath, char *arg)
exitcurses();
get_output(NULL, 0, "mediainfo", fpath, arg, 1);
initcurses();
return 0;
}
@ -1396,8 +1404,10 @@ show_help(void)
dprintf(fd, "\n");
close(fd);
exitcurses();
get_output(NULL, 0, "cat", tmp, NULL, 1);
unlink(tmp);
initcurses();
return 0;
}
@ -1791,10 +1801,8 @@ nochange:
if (editor) {
mime = getmime(dents[cur].name);
if (mime) {
exitcurses();
spawn(editor, newpath, NULL,
NULL, 0);
initcurses();
NULL, 0b10000000);
continue;
}
@ -1807,16 +1815,14 @@ nochange:
continue;
if (strstr(g_buf, "text/") == g_buf) {
exitcurses();
spawn(editor, newpath, NULL,
NULL, 0);
initcurses();
NULL, 0b10000000);
continue;
}
}
/* Invoke desktop opener as last resort */
spawn(utils[0], newpath, NULL, NULL, 4);
spawn(utils[0], newpath, NULL, NULL, 0b100);
continue;
}
default:
@ -1840,9 +1846,7 @@ nochange:
printmsg("navigate-as-you-type off");
goto nochange;
case SEL_SEARCH:
exitcurses();
spawn(player, path, "search", NULL, 0);
initcurses();
spawn(player, path, "search", NULL, 0b10000000);
break;
case SEL_NEXT:
if (cur < ndents - 1)
@ -2166,10 +2170,8 @@ nochange:
dentfree(dents);
printerr(1, "lstat");
} else {
exitcurses();
r = show_stats(oldpath, dents[cur].name,
&sb);
initcurses();
if (r < 0) {
printmsg(strerror(errno));
goto nochange;
@ -2207,7 +2209,7 @@ nochange:
goto nochange;
}
spawn(desktop_manager, path, NULL, path, 0x06);
spawn(desktop_manager, path, NULL, path, 0b110);
break;
case SEL_FSIZE:
sizeorder = !sizeorder;
@ -2254,36 +2256,28 @@ nochange:
else
snprintf(newpath, PATH_MAX, "%s/%s",
path, dents[cur].name);
spawn(copier, newpath, NULL, NULL, 0);
spawn(copier, newpath, NULL, NULL, 0b0);
printmsg(newpath);
} else if (!copier)
printmsg("NNN_COPIER is not set");
goto nochange;
case SEL_HELP:
exitcurses();
show_help();
initcurses();
break;
case SEL_RUN:
run = xgetenv(env, run);
exitcurses();
spawn(run, NULL, NULL, path, 1);
initcurses();
spawn(run, NULL, NULL, path, 0b10000001);
/* Repopulate as directory content may have changed */
goto begin;
case SEL_RUNARG:
run = xgetenv(env, run);
exitcurses();
spawn(run, dents[cur].name, NULL, path, 0);
initcurses();
spawn(run, dents[cur].name, NULL, path, 0b10000000);
break;
}
/* Screensaver */
if (idletimeout != 0 && idle == idletimeout) {
idle = 0;
exitcurses();
spawn(player, "", "screensaver", NULL, 8);
initcurses();
spawn(player, "", "screensaver", NULL, 0b10001000);
}
}
}