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stty: report bad args; add 'size';

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This commit is contained in:
K. Lange 2019-01-14 17:31:47 +09:00
parent a33b67c5a1
commit c4e0562753
1 changed files with 37 additions and 12 deletions
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49
apps/stty.c
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@ -42,7 +42,7 @@ static void print_(int flags, const char * lbl, int val, int def) {
#define print_oflag(lbl,val,def) print_(t.c_oflag, lbl, val, def)
#define print_lflag(lbl,val,def) print_(t.c_lflag, lbl, val, def)
static void set_char_(struct termios *t, const char * lbl, int val, const char * cmp, const char * arg, int * i) {
static int set_char_(struct termios *t, const char * lbl, int val, const char * cmp, const char * arg, int * i) {
if (!strcmp(cmp, lbl)) {
if (!arg) {
fprintf(stderr, "%s: expected argument\n", lbl);
@ -65,37 +65,46 @@ static void set_char_(struct termios *t, const char * lbl, int val, const char *
t->c_cc[val] = v;
}
(*i)++;
return 1;
}
return 0;
}
#define set_char(lbl,val) set_char_(&t, lbl, val, argv[i], argv[i+1], &i)
#define set_char(lbl,val) if (set_char_(&t, lbl, val, argv[i], argv[i+1], &i)) { i += 2; continue; }
static void setunset_flag(tcflag_t * flag, const char * lbl, int val, const char * cmp) {
static int setunset_flag(tcflag_t * flag, const char * lbl, int val, const char * cmp) {
if (*cmp == '-') {
if (!strcmp(cmp+1, lbl)) {
(*flag) = (*flag) & (~val);
return 1;
}
} else {
if (!strcmp(cmp, lbl)) {
(*flag) = (*flag) | (val);
return 1;
}
}
return 0;
}
#define set_cflag(lbl,val) setunset_flag(&(t.c_cflag), lbl, val, argv[i])
#define set_iflag(lbl,val) setunset_flag(&(t.c_iflag), lbl, val, argv[i])
#define set_oflag(lbl,val) setunset_flag(&(t.c_oflag), lbl, val, argv[i])
#define set_lflag(lbl,val) setunset_flag(&(t.c_lflag), lbl, val, argv[i])
#define set_cflag(lbl,val) if (setunset_flag(&(t.c_cflag), lbl, val, argv[i])) { i++; continue; }
#define set_iflag(lbl,val) if (setunset_flag(&(t.c_iflag), lbl, val, argv[i])) { i++; continue; }
#define set_oflag(lbl,val) if (setunset_flag(&(t.c_oflag), lbl, val, argv[i])) { i++; continue; }
#define set_lflag(lbl,val) if (setunset_flag(&(t.c_lflag), lbl, val, argv[i])) { i++; continue; }
static void set_toggle_(tcflag_t * flag, const char * lbl, int base, int val, const char * cmp) {
static int set_toggle_(tcflag_t * flag, const char * lbl, int base, int val, const char * cmp) {
if (!strcmp(cmp, lbl)) {
(*flag) = (*flag) & ~(base);
(*flag) = (*flag) | (val);
return 1;
}
return 0;
}
#define set_ctoggle(lbl,base,val) set_toggle_(&(t.c_cflag), lbl, base, val, argv[i])
#define set_otoggle(lbl,base,val) set_toggle_(&(t.c_oflag), lbl, base, val, argv[i])
#define set_ctoggle(lbl,base,val) if (set_toggle_(&(t.c_cflag), lbl, base, val, argv[i])) { i++; continue; }
#define set_otoggle(lbl,base,val) if (set_toggle_(&(t.c_oflag), lbl, base, val, argv[i])) { i++; continue; }
static int show_settings(int all) {
/* Size */
@ -215,6 +224,12 @@ static int show_settings(int all) {
return 0;
}
static void show_size(void) {
struct winsize w;
ioctl(STDERR_FILENO, TIOCGWINSZ, &w);
fprintf(stdout, "%d %d\n", w.ws_col, w.ws_row);
}
int main(int argc, char * argv[]) {
int i = 1;
@ -251,6 +266,16 @@ int main(int argc, char * argv[]) {
t.c_cc[VTIME] = 0;
t.c_cc[VLNEXT] = 22; /* ^V */
t.c_cc[VWERASE] = 23; /* ^W */
i++;
continue;
}
if (!strcmp(argv[i], "size")) {
show_size();
i++;
continue;
}
set_char("eof", VEOF);
@ -332,10 +357,10 @@ int main(int argc, char * argv[]) {
set_lflag("noflsh", NOFLSH);
set_lflag("tostop", TOSTOP);
i++;
fprintf(stderr, "%s: invalid argument '%s'\n", argv[0], argv[i]);
return 1;
}
tcsetattr(STDERR_FILENO, TCSAFLUSH, &t);
return 0;
}