X-Git-Url: https://git.xinqibao.xyz/st.git/blobdiff_plain/591d147af7d59f31a68513f613124d49f25f9859..ebc287271cd1c31a0a44826915257093867733ac:/st.c?ds=sidebyside
diff --git a/st.c b/st.c
index c2f294a..9e66d09 100644
--- a/st.c
+++ b/st.c
@@ -28,6 +28,10 @@
#include <libutil.h>
#endif
+#define USAGE \
+ "st-" VERSION ", (c) 2010 st engineers\n" \
+ "usage: st [-t title] [-e cmd] [-v]\n"
+
/* Arbitrary sizes */
#define ESC_TITLE_SIZ 256
#define ESC_BUF_SIZ 256
@@ -125,11 +129,12 @@ typedef struct {
GC gc;
} DC;
+/* TODO: use better name for vars... */
typedef struct {
int mode;
int bx, by;
int ex, ey;
- int b[2], e[2];
+ struct {int x, y;} b, e;
char *clip;
} Selection;
@@ -160,8 +165,8 @@ static void tputc(char);
static void tputs(char*, int);
static void treset(void);
static void tresize(int, int);
-static void tscrollup(int);
-static void tscrolldown(int);
+static void tscrollup(int, int);
+static void tscrolldown(int, int);
static void tsetattr(int*, int);
static void tsetchar(char);
static void tsetscroll(int, int);
@@ -209,6 +214,8 @@ static CSIEscape escseq;
static int cmdfd;
static pid_t pid;
static Selection sel;
+static char *opt_cmd = NULL;
+static char *opt_title = NULL;
void
selinit(void) {
@@ -218,13 +225,13 @@ selinit(void) {
}
static inline int selected(int x, int y) {
- if ((sel.ey==y && sel.by==y)) {
+ if(sel.ey == y && sel.by == y) {
int bx = MIN(sel.bx, sel.ex);
int ex = MAX(sel.bx, sel.ex);
- return (x>=bx && x<=ex);
+ return BETWEEN(x, bx, ex);
}
- return (((y>sel.b[1] && y<sel.e[1]) || (y==sel.e[1] && x<=sel.e[0])) || \
- (y==sel.b[1] && x>=sel.b[0] && (x<=sel.e[0] || sel.b[1]!=sel.e[1])));
+ return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
+ || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
}
static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
@@ -232,10 +239,10 @@ static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
*b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
*x = e->xbutton.x/xw.cw;
*y = e->xbutton.y/xw.ch;
- sel.b[0] = sel.by<sel.ey?sel.bx:sel.ex;
- sel.b[1] = MIN(sel.by, sel.ey);
- sel.e[0] = sel.by<sel.ey?sel.ex:sel.bx;
- sel.e[1] = MAX(sel.by, sel.ey);
+ sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
+ sel.b.y = MIN(sel.by, sel.ey);
+ sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
+ sel.e.y = MAX(sel.by, sel.ey);
}
static void bpress(XEvent *e) {
@@ -247,16 +254,15 @@ static void bpress(XEvent *e) {
static char *getseltext() {
char *str, *ptr;
int ls, x, y, sz;
- if(sel.bx==-1)
+ if(sel.bx == -1)
return NULL;
- sz = ((term.col+1) * (sel.e[1]-sel.b[1]+1));
- ptr = str = malloc (sz);
+ sz = (term.col+1) * (sel.e.y-sel.b.y+1);
+ ptr = str = malloc(sz);
for(y = 0; y < term.row; y++) {
- for(x = 0; x < term.col; x++) {
- if(term.line[y][x].state & GLYPH_SET && (ls=selected(x, y)))
+ for(x = 0; x < term.col; x++)
+ if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
*ptr = term.line[y][x].c, ptr++;
- }
- if (ls)
+ if(ls)
*ptr = '\n', ptr++;
}
*ptr = 0;
@@ -329,9 +335,12 @@ die(const char *errstr, ...) {
void
execsh(void) {
- char *args[3] = {getenv("SHELL"), "-i", NULL};
- DEFAULT(args[0], SHELL); /* if getenv() failed */
- putenv("TERM=" TNAME);
+ char *args[] = {getenv("SHELL"), "-i", NULL};
+ if(opt_cmd)
+ args[0] = opt_cmd, args[1] = NULL;
+ else
+ DEFAULT(args[0], SHELL);
+ putenv("TERM="TNAME);
execvp(args[0], args);
}
@@ -387,10 +396,10 @@ dump(char c) {
void
ttyread(void) {
- char buf[BUFSIZ] = {0};
+ char buf[BUFSIZ];
int ret;
- if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
+ if((ret = read(cmdfd, buf, LEN(buf))) < 0)
die("Couldn't read from shell: %s\n", SERRNO);
else
tputs(buf, ret);
@@ -459,16 +468,15 @@ tswapscreen(void) {
}
void
-tscrolldown (int n) {
+tscrolldown(int orig, int n) {
int i;
Line temp;
- LIMIT(n, 0, term.bot-term.top+1);
+ LIMIT(n, 0, term.bot-orig+1);
- for(i = 0; i < n; i++)
- memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
+ tclearregion(0, term.bot-n+1, term.col-1, term.bot);
- for(i = term.bot; i >= term.top+n; i--) {
+ for(i = term.bot; i >= orig+n; i--) {
temp = term.line[i];
term.line[i] = term.line[i-n];
term.line[i-n] = temp;
@@ -476,15 +484,14 @@ tscrolldown (int n) {
}
void
-tscrollup (int n) {
+tscrollup(int orig, int n) {
int i;
Line temp;
- LIMIT(n, 0, term.bot-term.top+1);
+ LIMIT(n, 0, term.bot-orig+1);
- for(i = 0; i < n; i++)
- memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
+ tclearregion(0, orig, term.col-1, orig+n-1);
- for(i = term.top; i <= term.bot-n; i++) {
+ for(i = orig; i <= term.bot-n; i++) {
temp = term.line[i];
term.line[i] = term.line[i+n];
term.line[i+n] = temp;
@@ -493,9 +500,11 @@ tscrollup (int n) {
void
tnewline(void) {
- int y = term.c.y + 1;
- if(y > term.bot)
- tscrollup(1), y = term.bot;
+ int y = term.c.y;
+ if(term.c.y == term.bot)
+ tscrollup(term.top, 1);
+ else
+ y++;
tmoveto(0, y);
}
@@ -587,50 +596,18 @@ tinsertblank(int n) {
void
tinsertblankline(int n) {
- int i;
- Line blank;
- int bot = term.bot;
-
- if(term.c.y > term.bot)
- bot = term.row - 1;
- else if(term.c.y < term.top)
- bot = term.top - 1;
- if(term.c.y + n >= bot) {
- tclearregion(0, term.c.y, term.col-1, bot);
+ if(term.c.y < term.top || term.c.y > term.bot)
return;
- }
- for(i = bot; i >= term.c.y+n; i--) {
- /* swap deleted line <-> blanked line */
- blank = term.line[i];
- term.line[i] = term.line[i-n];
- term.line[i-n] = blank;
- /* blank it */
- memset(blank, 0, term.col * sizeof(Glyph));
- }
+
+ tscrolldown(term.c.y, n);
}
void
tdeleteline(int n) {
- int i;
- Line blank;
- int bot = term.bot;
-
- if(term.c.y > term.bot)
- bot = term.row - 1;
- else if(term.c.y < term.top)
- bot = term.top - 1;
- if(term.c.y + n >= bot) {
- tclearregion(0, term.c.y, term.col-1, bot);
+ if(term.c.y < term.top || term.c.y > term.bot)
return;
- }
- for(i = term.c.y; i <= bot-n; i++) {
- /* swap deleted line <-> blanked line */
- blank = term.line[i];
- term.line[i] = term.line[i+n];
- term.line[i+n] = blank;
- /* blank it */
- memset(blank, 0, term.col * sizeof(Glyph));
- }
+
+ tscrollup(term.c.y, n);
}
void
@@ -700,7 +677,8 @@ tsetattr(int *attr, int l) {
else if(BETWEEN(attr[i], 100, 107))
term.c.attr.fg = attr[i] - 100 + 8;
else
- fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
+ fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
+
break;
}
}
@@ -802,11 +780,11 @@ csihandle(void) {
break;
case 'S': /* SU -- Scroll <n> line up */
DEFAULT(escseq.arg[0], 1);
- tscrollup(escseq.arg[0]);
+ tscrollup(term.top, escseq.arg[0]);
break;
case 'T': /* SD -- Scroll <n> line down */
DEFAULT(escseq.arg[0], 1);
- tscrolldown(escseq.arg[0]);
+ tscrolldown(term.top, escseq.arg[0]);
break;
case 'L': /* IL -- Insert <n> blank lines */
DEFAULT(escseq.arg[0], 1);
@@ -957,7 +935,8 @@ tputc(char c) {
term.esc = 0;
csiparse(), csihandle();
}
- } else if(term.esc & ESC_OSC) {
+ /* TODO: handle other OSC */
+ } else if(term.esc & ESC_OSC) {
if(c == ';') {
term.titlelen = 0;
term.esc = ESC_START | ESC_TITLE;
@@ -995,7 +974,7 @@ tputc(char c) {
break;
case 'D': /* IND -- Linefeed */
if(term.c.y == term.bot)
- tscrollup(1);
+ tscrollup(term.top, 1);
else
tmoveto(term.c.x, term.c.y+1);
term.esc = 0;
@@ -1006,7 +985,7 @@ tputc(char c) {
break;
case 'M': /* RI -- Reverse index */
if(term.c.y == term.top)
- tscrolldown(1);
+ tscrolldown(term.top, 1);
else
tmoveto(term.c.x, term.c.y-1);
term.esc = 0;
@@ -1082,12 +1061,25 @@ 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;
if(col < 1 || row < 1)
return;
- /* free uneeded rows */
- for(i = row; i < term.row; i++) {
+ /* free unneeded rows */
+ i = 0;
+ if(slide > 0) {
+ /* slide screen to keep cursor where we expect it -
+ * tscrollup would work here, but we can optimize to
+ * memmove because we're freeing the earlier lines */
+ for(/* i = 0 */; i < slide; i++) {
+ free(term.line[i]);
+ free(term.alt[i]);
+ }
+ memmove(term.line, term.line + slide, row * sizeof(Line));
+ memmove(term.alt, term.alt + slide, row * sizeof(Line));
+ }
+ for(i += row; i < term.row; i++) {
free(term.line[i]);
free(term.alt[i]);
}
@@ -1201,18 +1193,18 @@ xinit(void) {
xloadcols();
/* windows */
- xw.h = term.row * xw.ch + 2*BORDER;
- xw.w = term.col * xw.cw + 2*BORDER;
+ xw.bufh = term.row * xw.ch;
+ xw.bufw = term.col * xw.cw;
+ xw.h = xw.bufh + 2*BORDER;
+ xw.w = xw.bufw + 2*BORDER;
xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
xw.w, xw.h, 0,
dc.col[DefaultBG],
dc.col[DefaultBG]);
- xw.bufw = xw.w - 2*BORDER;
- xw.bufh = xw.h - 2*BORDER;
xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
/* gc */
dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
-
+
/* event mask */
XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
| StructureNotifyMask | FocusChangeMask | PointerMotionMask
@@ -1220,7 +1212,7 @@ xinit(void) {
XMapWindow(xw.dis, xw.win);
xhints();
- XStoreName(xw.dis, xw.win, "st");
+ XStoreName(xw.dis, xw.win, opt_title ? opt_title : "st");
XSync(xw.dis, 0);
}
@@ -1239,8 +1231,13 @@ xdraws(char *s, Glyph base, int x, int y, int len) {
XSetForeground(xw.dis, dc.gc, xfg);
if(base.mode & ATTR_GFX)
- for(i = 0; i < len; i++)
- s[i] = gfx[(int)s[i]];
+ for(i = 0; i < len; i++) {
+ char c = gfx[(unsigned int)s[i] % 256];
+ if(c)
+ s[i] = c;
+ else if(s[i] > 0x5f)
+ s[i] -= 0x5f;
+ }
XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
@@ -1460,10 +1457,21 @@ run(void) {
int
main(int argc, char *argv[]) {
- if(argc == 2 && !strncmp("-v", argv[1], 3))
- die("st-" VERSION ", (c) 2010 st engineers\n");
- else if(argc != 1)
- die("usage: st [-v]\n");
+ int i;
+
+ for(i = 1; i < argc; i++) {
+ switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
+ case 't':
+ if(++i < argc) opt_title = argv[i];
+ break;
+ case 'e':
+ if(++i < argc) opt_cmd = argv[i];
+ break;
+ case 'v':
+ default:
+ die(USAGE);
+ }
+ }
setlocale(LC_CTYPE, "");
tnew(80, 24);
ttynew();