#define LEN(a) (sizeof(a) / sizeof(a)[0])
#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
-#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f))
+#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
#define TRUEBLUE(x) (((x) & 0xff) << 8)
-#define VT102ID "\033[?6c"
-
enum glyph_attribute {
- ATTR_NULL = 0,
+ ATTR_NULL = 0,
ATTR_BOLD = 1,
ATTR_FAINT = 2,
ATTR_ITALIC = 4,
ATTR_UNDERLINE = 8,
ATTR_BLINK = 16,
- ATTR_FASTBLINK = 32,
- ATTR_REVERSE = 64,
- ATTR_INVISIBLE = 128,
- ATTR_STRUCK = 256,
- ATTR_WRAP = 512,
- ATTR_WIDE = 1024,
- ATTR_WDUMMY = 2048,
+ ATTR_REVERSE = 32,
+ ATTR_INVISIBLE = 64,
+ ATTR_STRUCK = 128,
+ ATTR_WRAP = 256,
+ ATTR_WIDE = 512,
+ ATTR_WDUMMY = 1024,
};
enum cursor_movement {
static void tputtab(int);
static void tputc(char *, int);
static void treset(void);
-static int tresize(int, int);
+static void tresize(int, int);
static void tscrollup(int, int);
static void tscrolldown(int, int);
static void tsetattr(int *, int);
void
execsh(void) {
- char **args;
- char *envshell = getenv("SHELL");
- const struct passwd *pass = getpwuid(getuid());
+ char **args, *sh;
+ const struct passwd *pw;
char buf[sizeof(long) * 8 + 1];
+ errno = 0;
+ if((pw = getpwuid(getuid())) == NULL) {
+ if(errno)
+ die("getpwuid:%s\n", strerror(errno));
+ else
+ die("who are you?\n");
+ }
unsetenv("COLUMNS");
unsetenv("LINES");
unsetenv("TERMCAP");
- if(pass) {
- setenv("LOGNAME", pass->pw_name, 1);
- setenv("USER", pass->pw_name, 1);
- setenv("SHELL", pass->pw_shell, 0);
- setenv("HOME", pass->pw_dir, 0);
- }
-
+ sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
snprintf(buf, sizeof(buf), "%lu", xw.win);
+
+ setenv("LOGNAME", pw->pw_name, 1);
+ setenv("USER", pw->pw_name, 1);
+ setenv("SHELL", sh, 1);
+ setenv("HOME", pw->pw_dir, 1);
+ setenv("TERM", termname, 1);
setenv("WINDOWID", buf, 1);
signal(SIGCHLD, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGALRM, SIG_DFL);
- DEFAULT(envshell, shell);
- setenv("TERM", termname, 1);
- args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
+ args = opt_cmd ? opt_cmd : (char *[]){sh, "-i", NULL};
execvp(args[0], args);
exit(EXIT_FAILURE);
}
void
sigchld(int a) {
- int stat = 0;
+ int stat, ret;
if(waitpid(pid, &stat, 0) < 0)
die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
- if(WIFEXITED(stat)) {
- exit(WEXITSTATUS(stat));
- } else {
- exit(EXIT_FAILURE);
- }
+ ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
+ if (ret != EXIT_SUCCESS)
+ die("child finished with error '%d'\n", stat);
+ exit(EXIT_SUCCESS);
}
void
memset(term.trantbl, sizeof(term.trantbl), CS_USA);
term.charset = 0;
- tclearregion(0, 0, term.col-1, term.row-1);
- tmoveto(0, 0);
- tcursor(CURSOR_SAVE);
+ for(i = 0; i < 2; i++) {
+ tmoveto(0, 0);
+ tcursor(CURSOR_SAVE);
+ tclearregion(0, 0, term.col-1, term.row-1);
+ tswapscreen();
+ }
}
void
void
tclearregion(int x1, int y1, int x2, int y2) {
int x, y, temp;
+ Glyph *gp;
if(x1 > x2)
temp = x1, x1 = x2, x2 = temp;
for(y = y1; y <= y2; y++) {
term.dirty[y] = 1;
for(x = x1; x <= x2; x++) {
+ gp = &term.line[y][x];
if(selected(x, y))
selclear(NULL);
- term.line[y][x] = term.c.attr;
- memcpy(term.line[y][x].c, " ", 2);
+ gp->fg = term.c.attr.fg;
+ gp->bg = term.c.attr.bg;
+ gp->mode = 0;
+ memcpy(gp->c, " ", 2);
}
}
}
ATTR_ITALIC |
ATTR_UNDERLINE |
ATTR_BLINK |
- ATTR_FASTBLINK |
ATTR_REVERSE |
ATTR_INVISIBLE |
ATTR_STRUCK );
term.c.attr.mode |= ATTR_UNDERLINE;
break;
case 5: /* slow blink */
- term.c.attr.mode |= ATTR_BLINK;
- break;
+ /* FALLTHROUGH */
case 6: /* rapid blink */
- term.c.attr.mode |= ATTR_FASTBLINK;
+ term.c.attr.mode |= ATTR_BLINK;
break;
case 7:
term.c.attr.mode |= ATTR_REVERSE;
case 9:
term.c.attr.mode |= ATTR_STRUCK;
break;
- case 21:
- term.c.attr.mode &= ~ATTR_BOLD;
- break;
case 22:
- term.c.attr.mode &= ~ATTR_FAINT;
+ term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
break;
case 23:
term.c.attr.mode &= ~ATTR_ITALIC;
case 25:
term.c.attr.mode &= ~ATTR_BLINK;
break;
- case 26:
- term.c.attr.mode &= ~ATTR_FASTBLINK;
- break;
case 27:
term.c.attr.mode &= ~ATTR_REVERSE;
break;
break;
case 'c': /* DA -- Device Attributes */
if(csiescseq.arg[0] == 0)
- ttywrite(VT102ID, sizeof(VT102ID) - 1);
+ ttywrite(vtiden, sizeof(vtiden) - 1);
break;
case 'C': /* CUF -- Cursor <n> Forward */
case 'a': /* HPR -- Cursor <n> Forward */
for(; len > 0; buf++, len--) {
char c = *buf;
- if(ISCONTROL(c)) { /* control code */
+ if(ISCONTROL((uchar) c)) { /* control code */
if(c & 0x80) {
c &= 0x7f;
tputc("^", 1);
tputc("[", 1);
} else if(c != '\n' && c != '\r' && c != '\t') {
- c ^= '\x40';
+ c ^= 0x40;
tputc("^", 1);
}
tputc(&c, 1);
case 0x98: /* TODO: SOS */
break;
case 0x9a: /* DECID -- Identify Terminal */
- ttywrite(VT102ID, sizeof(VT102ID) - 1);
+ ttywrite(vtiden, sizeof(vtiden) - 1);
break;
case 0x9b: /* TODO: CSI */
case 0x9c: /* TODO: ST */
}
break;
case 'Z': /* DECID -- Identify Terminal */
- ttywrite(VT102ID, sizeof(VT102ID) - 1);
+ ttywrite(vtiden, sizeof(vtiden) - 1);
break;
case 'c': /* RIS -- Reset to inital state */
treset();
}
}
-int
+void
tresize(int col, int row) {
int i;
int minrow = MIN(row, term.row);
int mincol = MIN(col, term.col);
int slide = term.c.y - row + 1;
bool *bp;
- Line *orig;
TCursor c;
- if(col < 1 || row < 1)
- return 0;
+ if(col < 1 || row < 1) {
+ fprintf(stderr,
+ "tresize: error resizing to %dx%d\n", col, row);
+ return;
+ }
/* free unneeded rows */
i = 0;
/* resize each row to new width, zero-pad if needed */
for(i = 0; i < minrow; i++) {
- term.dirty[i] = 1;
term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
}
/* allocate any new rows */
for(/* i == minrow */; i < row; i++) {
- term.dirty[i] = 1;
term.line[i] = xmalloc(col * sizeof(Glyph));
term.alt[i] = xmalloc(col * sizeof(Glyph));
}
tsetscroll(0, row-1);
/* make use of the LIMIT in tmoveto */
tmoveto(term.c.x, term.c.y);
- /* Clearing both screens */
- orig = term.line;
+ /* Clearing both screens (it makes dirty all lines) */
c = term.c;
- do {
+ for(i = 0; i < 2; i++) {
if(mincol < col && 0 < minrow) {
tclearregion(mincol, 0, col - 1, minrow - 1);
}
}
tswapscreen();
tcursor(CURSOR_LOAD);
- } while(orig != term.line);
+ }
term.c = c;
-
- return (slide > 0);
}
void
/* Waiting for window mapping */
while(1) {
XNextEvent(xw.dpy, &ev);
+ if(XFilterEvent(&ev, None))
+ continue;
if(ev.type == ConfigureNotify) {
w = ev.xconfigure.width;
h = ev.xconfigure.height;
void
usage(void) {
die("%s " VERSION " (c) 2010-2014 st engineers\n" \
- "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
- " [-t title] [-w windowid] [-e command ...]\n", argv0);
+ "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
+ " [-i] [-t title] [-w windowid] [-e command ...]\n", argv0);
}
int