[hackers] [st] backport of local changes || Anselm R Garbe

changeset: 44:515f41edbba6
tag: tip
user: Anselm R Garbe <garbeam_AT_gmail.com>
date: Sun May 10 13:17:09 2009 +0100
files: LICENSE Makefile README TODO config.mk st.c st.h st.info std.c
description:
backport of local changes

diff -r a50c714e3623 -r 515f41edbba6 LICENSE
--- a/LICENSE Fri Sep 05 20:25:34 2008 +0200
+++ b/LICENSE Sun May 10 13:17:09 2009 +0100
@@ -1,22 +1,25 @@
-MIT/X Consortium License
+Copyright (c) 2009, Aurélien APTEL <aurelien dot aptel at gmail dot com>
+Copyright (c) 2009, Anselm R Garbe <garbeam at gmail dot com>
 
-© 2007-2008 Anselm R Garbe <garbeam at gmail dot com>
-© 2008 Matthias Christian Ott <ott at enolink dot de>
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of its
+ contributors may be used to endorse or promote products derived
+ from this software without specific prior written permission.
 
-Permission is hereby granted, free of charge, to any person obtaining a
-copy of this software and associated documentation files (the "Software"),
-to deal in the Software without restriction, including without limitation
-the rights to use, copy, modify, merge, publish, distribute, sublicense,
-and/or sell copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff -r a50c714e3623 -r 515f41edbba6 Makefile
--- a/Makefile Fri Sep 05 20:25:34 2008 +0200
+++ b/Makefile Sun May 10 13:17:09 2009 +0100
@@ -1,45 +1,50 @@
 # st - simple terminal
 # See LICENSE file for copyright and license details.
 
-VERSION = 0.0
+include config.mk
 
-PREFIX = /usr/local
-MANDIR = $(PREFIX)/share/man
+SRC = st.c
+OBJ = ${SRC:.c=.o}
 
-CFLAGS = -DVERSION=\"0.0\" -D_GNU_SOURCE
+all: options st
 
-all: st std
+options:
+ @echo st build options:
+ @echo "CFLAGS = ${CFLAGS}"
+ @echo "LDFLAGS = ${LDFLAGS}"
+ @echo "CC = ${CC}"
+
+.c.o:
+ @echo CC $<
+ @${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.mk
+
+st: ${OBJ}
+ @echo CC -o $@
+ @${CC} -o $@ ${OBJ} ${LDFLAGS}
 
 clean:
- rm -f st std
- rm -f st.o std.o
- rm -f st-$(VERSION).tar.gz
+ @echo cleaning
+ @rm -f st ${OBJ} st-${VERSION}.tar.gz
 
 dist: clean
- mkdir st-$(VERSION)
- cp -f LICENSE README st-$(VERSION)
- cp -f Makefile config.mk st-$(VERSION)
- cp -f st.1 std.1 st-$(VERSION)
- cp -f st.c std.c st-$(VERSION)
- tar -czf st-$(VERSION).tar st-$(VERSION)
- rm -rf st-$(VERSION)
+ @echo creating dist tarball
+ @mkdir -p st-${VERSION}
+ @cp -R LICENSE Makefile README config.mk st.h ${SRC} st-${VERSION}
+ @tar -cf st-${VERSION}.tar st-${VERSION}
+ @gzip st-${VERSION}.tar
+ @rm -rf st-${VERSION}
 
-install:
- mkdir -p $(DESTDIR)$(PREFIX)/bin
- cp -f st $(DESTDIR)$(PREFIX)/bin
- cp -f std $(DESTDIR)$(PREFIX)/bin
- chmod 755 $(DESTDIR)$(PREFIX)/bin/st
- chmod 755 $(DESTDIR)$(PREFIX)/bin/std
- mkdir -p $(DESTDIR)$(MANDIR)/man1
- sed 's/VERSION/$(VERSION)/g' < st.1 > $(DESTDIR)$(MANDIR)/man1/st.1
- chmod 644 $(DESTDIR)$(MANDIR)/man1/st.1
- sed 's/VERSION/$(VERSION)/g' < std.1 > $(DESTDIR)$(MANDIR)/man1/std.1
- chmod 644 $(DESTDIR)$(MANDIR)/man1/std.1
+install: all
+ @echo installing executable file to ${DESTDIR}${PREFIX}/bin
+ @mkdir -p ${DESTDIR}${PREFIX}/bin
+ @cp -f st ${DESTDIR}${PREFIX}/bin
+ @chmod 755 ${DESTDIR}${PREFIX}/bin/st
+ @tic st.info
 
 uninstall:
- rm -f $(DESTDIR)$(PREFIX)/bin/st
- rm -f $(DESTDIR)$(PREFIX)/bin/std
- rm -f $(DESTDIR)$(MANDIR)/man1/st.1
- rm -f $(DESTDIR)$(MANDIR)/man1/std.1
+ @echo removing executable file from ${DESTDIR}${PREFIX}/bin
+ @rm -f ${DESTDIR}${PREFIX}/bin/st
 
-.PHONY: all clean dist install uninstall
+.PHONY: all options clean dist install uninstall
diff -r a50c714e3623 -r 515f41edbba6 README
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/README Sun May 10 13:17:09 2009 +0100
@@ -0,0 +1,28 @@
+st - simple terminal
+--------------------
+st is a simple virtual terminal emulator for X which sucks less.
+
+
+Requirements
+------------
+In order to build st you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (st is installed into
+the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install st (if
+necessary as root):
+
+ make clean install
+
+
+Running st
+----------
+See the man page for details.
+
+Credits
+-------
+Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.
diff -r a50c714e3623 -r 515f41edbba6 TODO
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/TODO Sun May 10 13:17:09 2009 +0100
@@ -0,0 +1,9 @@
+ - write a clean terminfo entry
+ - write global "setup" func
+ - try to split more logic/gfx
+ - optimize drawing
+ - handle copy/paste
+ - fix fork/child exit problem
+ - fix resize (shrinking should move last line up)
+ - handle utf8
+ - refactor/clean code
diff -r a50c714e3623 -r 515f41edbba6 config.mk
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/config.mk Sun May 10 13:17:09 2009 +0100
@@ -0,0 +1,31 @@
+# st version
+VERSION = 0.0
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+# Xinerama, comment if you don't want it
+#XINERAMALIBS = -L${X11LIB} -lXinerama
+#XINERAMAFLAGS = -DXINERAMA
+
+# includes and libs
+INCS = -I. -I/usr/include -I${X11INC}
+LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 ${XINERAMALIBS}
+
+# flags
+CPPFLAGS = -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+LDFLAGS = -s ${LIBS}
+
+# Solaris
+#CFLAGS = -fast ${INCS} -DVERSION=\"${VERSION}\"
+#LDFLAGS = ${LIBS}
+
+# compiler and linker
+CC = cc
diff -r a50c714e3623 -r 515f41edbba6 st.c
--- a/st.c Fri Sep 05 20:25:34 2008 +0200
+++ b/st.c Sun May 10 13:17:09 2009 +0100
@@ -1,17 +1,921 @@
-/* See LICENSE file for copyright and license details. */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+/* See LICENSE for licence details. */
+#include "st.h"
+
+/* Globals */
+DC dc;
+XWindow xw;
+Term term;
+Escseq escseq;
+int cmdfd;
+int running;
+
+void
+die(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
+void
+execsh(void) {
+ char *args[3] = {SHELL, "-i", NULL};
+ putenv("TERM=" TNAME);
+ execvp(SHELL, args);
+}
+
+void
+xbell(void) { /* visual bell */
+ XRectangle r = { 0, 0, xw.w, xw.h };
+ XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
+ XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
+ XFlush(xw.dis);
+ usleep(30000);
+ draw(SCredraw);
+}
+
+void
+ttynew(void) {
+ int m, s;
+ pid_t pid;
+ char *pts;
+
+ if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
+ die("openpt");
+ if(grantpt(m) == -1)
+ die("grandpt");
+ if(unlockpt(m) == -1)
+ die("unlockpt");
+ if((pts = ptsname(m)) == NULL)
+ die("ptsname");
+ if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
+ die("slave open");
+ fcntl(s, F_SETFL, O_NDELAY);
+ switch(pid = fork()) {
+ case -1:
+ die("fork");
+ break;
+ case 0:
+ setsid(); /* create a new process group */
+ dup2(s, STDIN_FILENO);
+ dup2(s, STDOUT_FILENO);
+ dup2(s, STDERR_FILENO);
+ if(ioctl(s, TIOCSCTTY, NULL) < 0)
+ die("slave TTIOCSTTY");
+ execsh();
+ break;
+ default:
+ close(s);
+ cmdfd = m;
+ }
+}
+
+void
+dump(char c) {
+ static int col;
+ fprintf(stderr, " %02x %c ", c, isprint(c)?c:'.');
+ if(++col % 10 == 0)
+ fprintf(stderr, "\n");
+}
+
+void
+ttyread(void) {
+ char buf[BUFSIZ] = {0};
+ int ret;
+
+ switch(ret = read(cmdfd, buf, BUFSIZ)) {
+ case -1: /* error or exit */
+ /* XXX: be more precise */
+ running = 0;
+ break;
+ default:
+ tputs(buf, ret);
+ }
+}
+
+void
+ttywrite(char *s, size_t n) {
+ if(write(cmdfd, s, n) == -1)
+ die("write error on tty.");
+}
+
+void
+ttyresize(int x, int y) {
+ struct winsize w;
+
+ w.ws_row = term.row;
+ w.ws_col = term.col;
+ w.ws_xpixel = w.ws_ypixel = 0;
+ if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
+ fprintf(stderr, "Couldn't set window size: %m\n");
+}
+
+int
+escfinal(char c) {
+ if(escseq.len == 1)
+ switch(c) {
+ case '[':
+ case ']':
+ case '(':
+ return 0;
+ case '=':
+ case '>':
+ default:
+ return 1;
+ }
+ else if(BETWEEN(c, 0x40, 0x7E))
+ return 1;
+ return 0;
+}
+
+void
+tcpos(int mode) {
+ static int x = 0;
+ static int y = 0;
+
+ if(mode == CSsave)
+ x = term.c.x, y = term.c.y;
+ else if(mode == CSload)
+ tmoveto(x, y);
+}
+
+void
+tnew(int col, int row) { /* screen size */
+ term.row = row, term.col = col;
+ term.top = 0, term.bot = term.row - 1;
+ /* mode */
+ term.mode = TMwrap;
+ /* cursor */
+ term.c.attr.mode = ATnone;
+ term.c.attr.fg = DefaultFG;
+ term.c.attr.bg = DefaultBG;
+ term.c.x = term.c.y = 0;
+ term.c.hidden = 0;
+ /* allocate screen */
+ term.line = calloc(term.row, sizeof(Line));
+ for(row = 0 ; row < term.row; row++)
+ term.line[row] = calloc(term.col, sizeof(Glyph));
+}
+
+void
+tscroll(void) {
+ Line temp = term.line[term.top];
+ int i;
+
+ for(i = term.top; i < term.bot; i++)
+ term.line[i] = term.line[i+1];
+ memset(temp, 0, sizeof(Glyph) * term.col);
+ term.line[term.bot] = temp;
+ xscroll();
+}
+
+void
+tnewline(void) {
+ int y = term.c.y + 1;
+
+ if(y > term.bot) {
+ tscroll(), y = term.bot;
+ }
+ tmoveto(0, y);
+}
+
+int
+escaddc(char c) {
+ escseq.buf[escseq.len++] = c;
+ if(escfinal(c) || escseq.len >= ESCSIZ) {
+ escparse(), eschandle();
+ return 0;
+ }
+ return 1;
+}
+
+void
+escparse(void) {
+ /* int noarg = 1; */
+ char *p = escseq.buf;
+
+ escseq.narg = 0;
+ switch(escseq.pre = *p++) {
+ case '[': /* CSI */
+ if(*p == '?')
+ escseq.priv = 1, p++;
+
+ while(p < escseq.buf+escseq.len) {
+ while(isdigit(*p)) {
+ escseq.arg[escseq.narg] *= 10;
+ escseq.arg[escseq.narg] += *(p++) - '0'/*, noarg = 0 */;
+ }
+ if(*p == ';')
+ escseq.narg++, p++;
+ else {
+ escseq.mode = *p;
+ escseq.narg++;
+ return;
+ }
+ }
+ break;
+ case '(':
+ /* humf charset stuff */
+ break;
+ }
+}
+
+void
+tmoveto(int x, int y) {
+ term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
+ term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
+}
+
+void
+tcursor(int dir) {
+ int xi = term.c.x, yi = term.c.y;
+ int xf = xi, yf = yi;
+
+ switch(dir) {
+ case CSup:
+ yf--;
+ break;
+ case CSdown:
+ yf++;
+ break;
+ case CSleft:
+ xf--;
+ if(xf < 0) {
+ xf = term.col-1, yf--;
+ if(yf < term.top)
+ yf = term.top, xf = 0;
+ }
+ break;
+ case CSright:
+ xf++;
+ if(xf >= term.col) {
+ xf = 0, yf++;
+ if(yf > term.bot)
+ yf = term.bot, tscroll();
+ }
+ break;
+ }
+ tmoveto(xf, yf);
+}
+
+void
+tsetchar(char c) {
+ term.line[term.c.y][term.c.x] = term.c.attr;
+ term.line[term.c.y][term.c.x].c = c;
+ term.line[term.c.y][term.c.x].state |= CRset | CRupdate;
+}
+
+void
+tclearregion(int x1, int y1, int x2, int y2) {
+ int x, y;
+
+ LIMIT(x1, 0, term.col-1);
+ LIMIT(x2, 0, term.col-1);
+ LIMIT(y1, 0, term.row-1);
+ LIMIT(y2, 0, term.row-1);
+
+ /* XXX: could be optimized */
+ for(x = x1; x <= x2; x++)
+ for(y = y1; y <= y2; y++)
+ memset(&term.line[y][x], 0, sizeof(Glyph));
+
+ xclear(x1, y1, x2, y2);
+}
+
+void
+tdeletechar(int n) {
+ int src = term.c.x + n;
+ int dst = term.c.x;
+ int size = term.col - src;
+
+ if(src >= term.col) {
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+ return;
+ }
+ memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
+ tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
+}
+
+void
+tinsertblank(int n) {
+ int src = term.c.x;
+ int dst = src + n;
+ int size = term.col - n - src;
+
+ if(dst >= term.col) {
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+ return;
+ }
+ memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
+ tclearregion(src, term.c.y, dst, term.c.y);
+}
+
+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);
+ 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));
+ }
+}
+
+
+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);
+ 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));
+ }
+}
+
+void
+tsetattr(int *attr, int l) {
+ int i;
+
+#ifdef TRUECOLOR /* ESC [ ? <fg/bg> ; <r> ; <g> ; <b> m */
+ Color col;
+ if(escseq.priv && escseq.len == 4) { /* True color extension :) */
+ col = (escseq.arg[1]<<16) + (escseq.arg[2]<<8) + escseq.arg[3];
+ switch(escseq.arg[0]) {
+ case 3: /* foreground */
+ term.c.attr.fg = col;
+ break;
+ case 4: /* background */
+ term.c.attr.bg = col;
+ break;
+ }
+ }
+ else
+#endif
+ for(i = 0; i < l; i++) {
+ switch(attr[i]) {
+ case 0:
+ memset(&term.c.attr, 0, sizeof(term.c.attr));
+ term.c.attr.fg = DefaultFG;
+ term.c.attr.bg = DefaultBG;
+ break;
+ case 1:
+ term.c.attr.mode |= ATbold;
+ break;
+ case 4:
+ term.c.attr.mode |= ATunderline;
+ break;
+ case 7:
+ term.c.attr.mode |= ATreverse;
+ break;
+ case 8:
+ term.c.hidden = CShide;
+ break;
+ case 22:
+ term.c.attr.mode &= ~ATbold;
+ break;
+ case 24:
+ term.c.attr.mode &= ~ATunderline;
+ break;
+ case 27:
+ term.c.attr.mode &= ~ATreverse;
+ break;
+ case 39:
+ term.c.attr.fg = DefaultFG;
+ break;
+ case 49:
+ term.c.attr.fg = DefaultBG;
+ break;
+ default:
+ if(BETWEEN(attr[i], 30, 37))
+ term.c.attr.fg = attr[i] - 30;
+ else if(BETWEEN(attr[i], 40, 47))
+ term.c.attr.bg = attr[i] - 40;
+ break;
+ }
+ }
+}
+
+void
+tsetscroll(int t, int b) {
+ int temp;
+
+ LIMIT(t, 0, term.row-1);
+ LIMIT(b, 0, term.row-1);
+ if(t > b) {
+ temp = t;
+ t = b;
+ b = temp;
+ }
+ term.top = t;
+ term.bot = b;
+}
+
+
+void
+eschandle(void) {
+ /* escdump(); */
+ switch(escseq.pre) {
+ case '[':
+ switch(escseq.mode) {
+ case '@': /* Insert <n> blank char */
+ DEFAULT(escseq.arg[0], 1);
+ tinsertblank(escseq.arg[0]);
+ break;
+ case 'A': /* Cursor <n> Up */
+ case 'e':
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y-escseq.arg[0]);
+ break;
+ case 'B': /* Cursor <n> Down */
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y+escseq.arg[0]);
+ break;
+ case 'C': /* Cursor <n> Forward */
+ case 'a':
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(term.c.x+escseq.arg[0], term.c.y);
+ break;
+ case 'D': /* Cursor <n> Backward */
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(term.c.x-escseq.arg[0], term.c.y);
+ break;
+ case 'E': /* Cursor <n> Down and first col */
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(0, term.c.y+escseq.arg[0]);
+ break;
+ case 'F': /* Cursor <n> Up and first col */
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(0, term.c.y-escseq.arg[0]);
+ break;
+ case 'G': /* Move to <col> */
+ case '`':
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(escseq.arg[0]-1, term.c.y);
+ break;
+ case 'H': /* Move to <row> <col> */
+ case 'f':
+ DEFAULT(escseq.arg[0], 1);
+ DEFAULT(escseq.arg[1], 1);
+ tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
+ break;
+ case 'J': /* Clear screen */
+ switch(escseq.arg[0]) {
+ case 0: /* below */
+ tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
+ break;
+ case 1: /* above */
+ tclearregion(0, 0, term.c.x, term.c.y);
+ break;
+ case 2: /* all */
+ tclearregion(0, 0, term.col-1, term.row-1);
+ break;
+ }
+ break;
+ case 'K': /* Clear line */
+ switch(escseq.arg[0]) {
+ case 0: /* right */
+ tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+ break;
+ case 1: /* left */
+ tclearregion(0, term.c.y, term.c.x, term.c.y);
+ break;
+ case 2: /* all */
+ tclearregion(0, term.c.y, term.col-1, term.c.y);
+ break;
+ }
+ break;
+ case 'L': /* Insert <n> blank lines */
+ DEFAULT(escseq.arg[0], 1);
+ tinsertblankline(escseq.arg[0]);
+ break;
+ case 'M': /* Delete <n> lines */
+ DEFAULT(escseq.arg[0], 1);
+ tdeleteline(escseq.arg[0]);
+ break;
+ case 'P': /* Delete <n> char */
+ DEFAULT(escseq.arg[0], 1);
+ tdeletechar(escseq.arg[0]);
+ break;
+ case 'd': /* Move to <row> */
+ DEFAULT(escseq.arg[0], 1);
+ tmoveto(term.c.x, escseq.arg[0]-1);
+ break;
+ case 'h': /* Set terminal mode */
+ break;
+ case 'm': /* Terminal attribute (color) */
+ tsetattr(escseq.arg, escseq.narg);
+ break;
+ case 'r':
+ if(escseq.priv)
+ ;
+ else {
+ DEFAULT(escseq.arg[0], 1);
+ DEFAULT(escseq.arg[1], term.row);
+ tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
+ }
+ break;
+ case 's': /* Save cursor position */
+ tcpos(CSsave);
+ break;
+ case 'u': /* Load cursor position */
+ tcpos(CSload);
+ break;
+ }
+ break;
+ }
+}
+
+void
+escdump(void) {
+ int i;
+ puts("------");
+ printf("rawbuf : %s\n", escseq.buf);
+ printf("prechar : %c\n", escseq.pre);
+ printf("private : %c\n", escseq.priv ? '?' : ' ');
+ printf("narg : %d\n", escseq.narg);
+ if(escseq.narg) {
+ for(i = 0; i < escseq.narg; i++)
+ printf("\targ %d = %d\n", i, escseq.arg[i]);
+ }
+ printf("mode : %c\n", escseq.mode);
+}
+
+void
+escreset(void) {
+ memset(&escseq, 0, sizeof(escseq));
+}
+
+void
+tputc(char c) {
+ static int inesc = 0;
+
+ dump(c);
+ /* start of escseq */
+ if(c == '\033')
+ escreset(), inesc = 1;
+ else if(inesc) {
+ inesc = escaddc(c);
+ } /* normal char */
+ else switch(c) {
+ default:
+ tsetchar(c);
+ tcursor(CSright);
+ break;
+ case '\b':
+ tcursor(CSleft);
+ break;
+ case '\r':
+ tmoveto(0, term.c.y);
+ break;
+ case '\n':
+ tnewline();
+ break;
+ case '\a':
+ xbell();
+ break;
+ }
+}
+
+void
+tputs(char *s, int len) {
+ for(; len > 0; len--)
+ tputc(*s++);
+}
+
+void
+tdump(void) {
+ int row, col;
+ Glyph c;
+
+ for(row = 0; row < term.row; row++) {
+ for(col = 0; col < term.col; col++) {
+ if(col == term.c.x && row == term.c.y)
+ putchar('#');
+ else {
+ c = term.line[row][col];
+ putchar(c.state & CRset ? c.c : '.');
+ }
+ }
+ putchar('\n');
+ }
+}
+
+void
+tresize(int col, int row) {
+ int i;
+ Line *line;
+ int minrow = MIN(row, term.row);
+ int mincol = MIN(col, term.col);
+
+ if(col < 1 || row < 1)
+ return;
+ line = calloc(row, sizeof(Line));
+ for(i = 0 ; i < row; i++)
+ line[i] = calloc(col, sizeof(Glyph));
+ for(i = 0 ; i < minrow; i++) {
+ memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
+ free(term.line[i]);
+ }
+ free(term.line);
+ LIMIT(term.c.x, 0, col-1);
+ LIMIT(term.c.y, 0, row-1);
+ LIMIT(term.top, 0, row-1);
+ LIMIT(term.bot, 0, row-1);
+ // if(term.bot == term.row-1)
+ term.bot = row-1;
+ term.line = line;
+ term.col = col, term.row = row;
+}
+
+unsigned long
+xgetcol(const char *s) {
+ XColor color;
+ Colormap cmap = DefaultColormap(xw.dis, xw.scr);
+
+ if(!XAllocNamedColor(xw.dis, cmap, s, &color, &color)) {
+ color.pixel = WhitePixel(xw.dis, xw.scr);
+ fprintf(stderr, "Could not allocate color '%s'\n", s);
+ }
+ return color.pixel;
+}
+
+
+void
+xclear(int x1, int y1, int x2, int y2) {
+ XClearArea(xw.dis, xw.win,
+ x1 * xw.cw, y1 * xw.ch,
+ (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch,
+ False);
+}
+
+
+void
+xscroll(void) {
+ int srcy = (term.top+1) * xw.ch;
+ int dsty = term.top * xw.ch;
+ int height = (term.bot-term.top) * xw.ch;
+
+ xcursor(CShide);
+ XCopyArea(xw.dis, xw.win, xw.win, dc.gc, 0, srcy, xw.w, height, 0, dsty);
+ xclear(0, term.bot, term.col-1, term.bot);
+}
+
+
+
+
+void
+xinit(void) {
+ XGCValues values;
+ unsigned long valuemask;
+ XClassHint chint;
+ XWMHints wmhint;
+ XSizeHints shint;
+ char *args[] = {NULL};
+ int i;
+
+ xw.dis = XOpenDisplay(NULL);
+ xw.scr = XDefaultScreen(xw.dis);
+ /* font */
+ dc.font = XLoadQueryFont(xw.dis, FONT);
+ xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
+ xw.ch = dc.font->ascent + dc.font->descent + LINESPACE;
+ /* colors */
+ for(i = 0; i < LEN(colorname); i++)
+ dc.col[i] = xgetcol(colorname[i]);
+ term.c.attr.fg = DefaultFG;
+ term.c.attr.bg = DefaultBG;
+ term.c.attr.mode = ATnone;
+ /* windows */
+ xw.h = term.row * xw.ch;
+ xw.w = term.col * xw.cw;
+ /* XXX: this BORDER is useless after the first resize, handle it in xdraws() */
+ xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
+ xw.w, xw.h, BORDER,
+ dc.col[DefaultBG],
+ dc.col[DefaultBG]);
+ /* gc */
+ values.foreground = XWhitePixel(xw.dis, xw.scr);
+ values.font = dc.font->fid;
+ valuemask = GCForeground | GCFont;
+ dc.gc = XCreateGC(xw.dis, xw.win, valuemask, &values);
+ XMapWindow(xw.dis, xw.win);
+ /* wm stuff */
+ chint.res_name = TNAME, chint.res_class = TNAME;
+ wmhint.input = 1, wmhint.flags = InputHint;
+ shint.height_inc = xw.ch, shint.width_inc = xw.cw;
+ shint.height = xw.h, shint.width = xw.w;
+ shint.flags = PSize | PResizeInc;
+ XSetWMProperties(xw.dis, xw.win, NULL, NULL, &args[0], 0, &shint, &wmhint, &chint);
+ XStoreName(xw.dis, xw.win, TNAME);
+ XSync(xw.dis, 0);
+}
+
+void
+xdrawc(int x, int y, Glyph g) {
+ XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
+ unsigned long xfg, xbg;
+
+ /* reverse video */
+ if(g.mode & ATreverse)
+ xfg = dc.col[g.bg], xbg = dc.col[g.fg];
+ else
+ xfg = dc.col[g.fg], xbg = dc.col[g.bg];
+ /* background */
+ XSetForeground(xw.dis, dc.gc, xbg);
+ XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
+ /* string */
+ XSetForeground(xw.dis, dc.gc, xfg);
+ XDrawString(xw.dis, xw.win, dc.gc, r.x, r.y+dc.font->ascent, &(g.c), 1);
+ if(g.mode & ATbold) /* XXX: bold hack (draw again at x+1) */
+ XDrawString(xw.dis, xw.win, dc.gc, r.x+1, r.y+dc.font->ascent, &(g.c), 1);
+ /* underline */
+ if(g.mode & ATunderline) {
+ r.y += dc.font->ascent + 1;
+ XDrawLine(xw.dis, xw.win, dc.gc, r.x, r.y, r.x+r.width-1, r.y);
+ }
+}
+
+void
+xcursor(int mode) {
+ static int oldx = 0;
+ static int oldy = 0;
+ Glyph g = {' ', ATnone, DefaultBG, DefaultCS, 0};
+
+ if(term.line[term.c.y][term.c.x].state & CRset)
+ g.c = term.line[term.c.y][term.c.x].c;
+ /* remove the old cursor */
+ if(term.line[oldy][oldx].state & CRset)
+ xdrawc(oldx, oldy, term.line[oldy][oldx]);
+ else xclear(oldx, oldy, oldx, oldy); /* XXX: maybe a bug */
+ if(mode == CSdraw && !term.c.hidden) {
+ xdrawc(term.c.x, term.c.y, g);
+ oldx = term.c.x, oldy = term.c.y;
+ }
+}
+
+
+void
+draw(int redraw_all) {
+ int x, y;
+ int changed, set;
+
+ if(redraw_all)
+ XClearWindow(xw.dis, xw.win);
+ /* XXX: drawing could be optimised */
+ for(y = 0; y < term.row; y++) {
+ for(x = 0; x < term.col; x++) {
+ changed = term.line[y][x].state & CRupdate;
+ set = term.line[y][x].state & CRset;
+ if((changed && set) || (redraw_all && set)) {
+ term.line[y][x].state &= ~CRupdate;
+ xdrawc(x, y, term.line[y][x]);
+ }
+ }
+ }
+ xcursor(CSdraw);
+}
+
+void
+kpress(XKeyEvent *e) {
+ KeySym ksym;
+ char buf[32];
+ int len;
+ int meta;
+ int shift;
+
+ meta = e->state & Mod4Mask;
+ shift = e->state & ShiftMask;
+ len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
+ if(len > 0) {
+ buf[sizeof(buf)-1] = '\0';
+ if(meta && len == 1)
+ ttywrite("\033", 1);
+ ttywrite(buf, len);
+ return;
+ }
+ switch(ksym) {
+#ifdef DEBUG1
+ default:
+ printf("errkey: %d\n", (int)ksym);
+ break;
+#endif
+ case XK_Up:
+ case XK_Down:
+ case XK_Left:
+ case XK_Right:
+ sprintf(buf, "\033[%c", "DACB"[ksym - XK_Left]);
+ ttywrite(buf, 3);
+ break;
+ case XK_Delete: ttywrite(KEYDELETE, sizeof(KEYDELETE)-1); break;
+ case XK_Home: ttywrite( KEYHOME, sizeof( KEYHOME)-1); break;
+ case XK_End: ttywrite( KEYEND, sizeof( KEYEND)-1); break;
+ case XK_Prior: ttywrite( KEYPREV, sizeof( KEYPREV)-1); break;
+ case XK_Next: ttywrite( KEYNEXT, sizeof( KEYNEXT)-1); break;
+ case XK_Insert:
+ /* XXX: paste X clipboard */
+ if(shift);
+ break;
+ }
+}
+
+void
+resize(XEvent *e) {
+ int col, row;
+ col = e->xconfigure.width / xw.cw;
+ row = e->xconfigure.height / xw.ch;
+
+ if(term.col != col && term.row != row) {
+ tresize(col, row);
+ ttyresize(col, row);
+ xw.w = e->xconfigure.width;
+ xw.h = e->xconfigure.height;
+ draw(SCredraw);
+ }
+}
+
+
+void
+run(void) {
+ int ret;
+ XEvent ev;
+ fd_set rfd;
+ struct timeval tv = {0, 10000};
+
+ running = 1;
+ XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
+ XResizeWindow(xw.dis, xw.win, xw.w , xw.h); /* seems to fix the resize bug in wmii */
+ while(running) {
+ while(XPending(xw.dis)) {
+ XNextEvent(xw.dis, &ev);
+ switch (ev.type) {
+ default:
+ break;
+ case KeyPress:
+ kpress(&ev.xkey);
+ break;
+ case Expose:
+ draw(SCredraw);
+ break;
+ case ConfigureNotify:
+ resize(&ev);
+ break;
+ }
+ }
+ FD_ZERO(&rfd);
+ FD_SET(cmdfd, &rfd);
+ ret = select(cmdfd+1, &rfd, NULL, NULL, &tv);
+ if(ret < 0) {
+ fprintf(stderr, "select: %m\n");
+ running = 0;
+ }
+ if(!ret)
+ continue;
+ if(FD_ISSET(cmdfd, &rfd)) {
+ ttyread();
+ draw(SCupdate);
+ }
+ }
+}
 
 int
 main(int argc, char *argv[]) {
- if(argc == 2 && !strcmp("-v", argv[1])) {
- fprintf(stderr, "st-"VERSION", © 2007-2008 st engineers, see LICENSE for details\n");
- exit(EXIT_SUCCESS);
- }
- else if(argc != 1) {
- fprintf(stderr, "usage: st [-v]\n");
- exit(EXIT_FAILURE);
- }
+ if(argc == 2 && !strncmp("-v", argv[1], 3))
+ die("st-"VERSION", © 2009 st engineers\n");
+ else if(argc != 1)
+ die("usage: st [-v]\n");
+ setlocale(LC_CTYPE, "");
+ tnew(80, 24);
+ ttynew();
+ xinit();
+ run();
         return 0;
 }
diff -r a50c714e3623 -r 515f41edbba6 st.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/st.h Sun May 10 13:17:09 2009 +0100
@@ -0,0 +1,181 @@
+/* See LICENSE for licence details. */
+
+#define _XOPEN_SOURCE
+#include <ctype.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/ioctl.h>
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+#include <X11/Xutil.h>
+
+/* special keys */
+#define KEYDELETE "\033[3~"
+#define KEYHOME "\033[1~"
+#define KEYEND "\033[4~"
+#define KEYPREV "\033[5~"
+#define KEYNEXT "\033[6~"
+
+#define TNAME "st"
+#define SHELL "/bin/bash"
+#define TAB 8
+
+#define FONT "-*-terminus-medium-r-normal-*-14-*-*-*-*-*-*-*"
+#define BORDER 3
+#define LINESPACE 1 /* additional pixel between each line */
+
+/* Default colors */
+#define DefaultFG 7
+#define DefaultBG 0
+#define DefaultCS 1
+#define BellCol DefaultFG /* visual bell color */
+
+static char* colorname[] = {
+ "black",
+ "red",
+ "green",
+ "yellow",
+ "blue",
+ "magenta",
+ "cyan",
+ "white",
+};
+
+
+/* Arbitrary sizes */
+#define ESCSIZ 256
+#define ESCARG 16
+
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) < (b) ? (b) : (a))
+#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 LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+
+
+enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 }; /* Attribute */
+enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload }; /* Cursor */
+enum { CRset=1 , CRupdate=2 }; /* Character state */
+enum { TMwrap=1 , TMinsert=2 }; /* Terminal mode */
+enum { SCupdate, SCredraw }; /* screen draw mode */
+
+#ifdef TRUECOLOR
+#error Truecolor not implemented yet
+typedef int Color;
+#else
+typedef char Color;
+#endif
+
+
+typedef struct {
+ char c; /* character code */
+ char mode; /* attribute flags */
+ Color fg; /* foreground */
+ Color bg; /* background */
+ char state; /* state flag */
+} Glyph;
+
+typedef Glyph* Line;
+
+typedef struct {
+ Glyph attr; /* current char attributes */
+ char hidden;
+ int x;
+ int y;
+} TCursor;
+
+/* Escape sequence structs */
+typedef struct {
+ char buf[ESCSIZ+1]; /* raw string */
+ int len; /* raw string length */
+ /* ESC <pre> [[ [<priv>] <arg> [;]] <mode>] */
+ char pre;
+ char priv;
+ int arg[ESCARG+1];
+ int narg; /* nb of args */
+ char mode;
+} Escseq;
+
+/* Internal representation of the screen */
+typedef struct {
+ int row; /* nb row */
+ int col; /* nb col */
+ Line* line; /* screen */
+ TCursor c; /* cursor */
+ int top; /* top scroll limit */
+ int bot; /* bottom scroll limit */
+ int mode; /* terminal mode */
+} Term;
+
+/* Purely graphic info */
+typedef struct {
+ Display* dis;
+ Window win;
+ int scr;
+ int w; /* window width */
+ int h; /* window height */
+ int ch; /* char height */
+ int cw; /* char width */
+} XWindow;
+
+/* Drawing Context */
+typedef struct {
+ unsigned long col[LEN(colorname)];
+ XFontStruct* font;
+ GC gc;
+} DC;
+
+
+void die(const char *errstr, ...);
+void draw(int);
+void execsh(void);
+void kpress(XKeyEvent *);
+void resize(XEvent *);
+void run(void);
+
+int escaddc(char);
+int escfinal(char);
+void escdump(void);
+void eschandle(void);
+void escparse(void);
+void escreset(void);
+
+void tclearregion(int, int, int, int);
+void tcpos(int);
+void tcursor(int);
+void tdeletechar(int);
+void tdeleteline(int);
+void tdump(void);
+void tinsertblank(int);
+void tinsertblankline(int);
+void tmoveto(int, int);
+void tnew(int, int);
+void tnewline(void);
+void tputc(char);
+void tputs(char*, int);
+void tresize(int, int);
+void tscroll(void);
+void tsetattr(int*, int);
+void tsetchar(char);
+void tsetscroll(int, int);
+
+void ttynew(void);
+void ttyread(void);
+void ttyresize(int, int);
+void ttywrite(char *, size_t);
+
+unsigned long xgetcol(const char *);
+void xclear(int, int, int, int);
+void xcursor(int);
+void xdrawc(int, int, Glyph);
+void xinit(void);
+void xscroll(void);
diff -r a50c714e3623 -r 515f41edbba6 st.info
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/st.info Sun May 10 13:17:09 2009 +0100
@@ -0,0 +1,54 @@
+# Reconstructed via infocmp from file: /lib/terminfo/p/pcansi
+st| simpleterm,
+ am,
+ ul,
+ mir,
+ msgr,
+ colors#8,
+ cols#80,
+ it#8,
+ lines#24,
+ ncv#3,
+ pairs#64,
+ acsc=*`#aof+g+j+k+l+m+n-o-p-q-r-s+t+u+v+w|x<y>z{{||}}-~,
+ bel=^G,
+ bold=\E[1m,
+ cbt=\E[Z,
+ clear=\E[H\E[2J,
+ cr=^M,
+ cub1=\E[D,
+ cud1=\E[B,
+ cuf1=\E[C,
+ cup=\E[%i%p1%d;%p2%dH,
+ cuu1=\E[A,
+ dch1=\E[P,
+ dl1=\E[M,
+ ed=\E[J,
+ el=\E[K,
+ home=\E[H,
+ ht=^I,
+ hts=\EH,
+ il1=\E[L,
+ ind=^J,
+ invis=\E[8m,
+ kbs=^H,
+ kcub1=\E[D,
+ kcud1=\E[B,
+ kcuf1=\E[C,
+ kcuu1=\E[A,
+ khome=\E[1~,
+ knp=\E[6~,
+ kpp=\E[5~,
+ op=\E[37;40m,
+ rev=\E[7m,
+ rmacs=\E[10m,
+ rmso=\E[m,
+ rmul=\E[m,
+ setab=\E[4%p1%dm,
+ setaf=\E[3%p1%dm,
+# sgr=\E[0;10%?%p1%t;7%;%?%p2%t;4%;%?%p3%t;7%;%?%p4%t;5%;%?%p6%t;1%;%?%p7%t;8%;%?%p9%t;12%;m,
+ sgr0=\E[0m,
+ smacs=\E[12m,
+ smso=\E[7m,
+ smul=\E[4m,
+ tbc=\E[2g,
diff -r a50c714e3623 -r 515f41edbba6 std.c
--- a/std.c Fri Sep 05 20:25:34 2008 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,363 +0,0 @@
-/* See LICENSE file for copyright and license details.
- *
- * Simple terminal daemon is a terminal emulator. It can be used in
- * combination with simple terminal to emulate a mostly VT100-compatible
- * terminal.
- *
- * In this process std works like a filter. It reads data from a
- * pseudo-terminal and parses the escape sequences and transforms them
- * into an ed(1)-like language. The resulting data is buffered and
- * written to stdout.
- * Parallely it reads data from stdin and parses and executes the
- * commands. The resulting data is written to the pseudo-terminal.
- */
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <ctype.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#if !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
-#include <pty.h>
-#endif
-#include <signal.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define LENGTH(x) (sizeof(x) / sizeof((x)[0]))
-#define MAX(a,b) (((a) > (b)) ? (a) : (b))
-#define MIN(a,b) (((a) < (b)) ? (a) : (b))
-
-typedef struct {
- unsigned char data[BUFSIZ];
- int s, e;
- int n;
-} RingBuffer;
-
-static void buffer(char c);
-static void cmd(const char *cmdstr, ...);
-static void getpty(void);
-static void movea(int x, int y);
-static void mover(int x, int y);
-static void parsecmd(void);
-static void parseesc(void);
-static void scroll(int l);
-static void shell(void);
-static void sigchld(int n);
-static char unbuffer(void);
-
-static int cols = 80, lines = 25;
-static int cx = 0, cy = 0;
-static int c;
-static int ptm, pts;
-static _Bool bold, digit, qmark;
-static pid_t pid;
-static RingBuffer buf;
-static FILE *fptm;
-
-void
-buffer(char c) {
- if(buf.n < LENGTH(buf.data))
- buf.n++;
- else
- buf.s = (buf.s + 1) % LENGTH(buf.data);
- buf.data[buf.e++] = c;
- buf.e %= LENGTH(buf.data);
-}
-
-void
-cmd(const char *cmdstr, ...) {
- va_list ap;
-
- putchar('\n');
- putchar(':');
- va_start(ap, cmdstr);
- vfprintf(stdout, cmdstr, ap);
- va_end(ap);
-}
-
-void
-movea(int x, int y) {
- x = MAX(x, cols);
- y = MAX(y, lines);
- cx = x;
- cy = y;
- cmd("seek(%d,%d)", x, y);
-}
-
-void
-mover(int x, int y) {
- movea(cx + x, cy + y);
-}
-
-void
-parsecmd(void) {
-}
-
-void
-parseesc(void) {
- int i, j;
- int arg[16];
-
- memset(arg, 0, LENGTH(arg));
- c = getc(fptm);
- switch(c) {
- case '[':
- c = getc(fptm);
- for(j = 0; j < LENGTH(arg);) {
- if(isdigit(c)) {
- digit = 1;
- arg[j] *= 10;
- arg[j] += c - '0';
- }
- else if(c == '?')
- qmark = 1;
- else if(c == ';') {
- if(!digit)
- errx(EXIT_FAILURE, "syntax error");
- digit = 0;
- j++;
- }
- else {
- if(digit) {
- digit = 0;
- j++;
- }
- break;
- }
- c = getc(fptm);
- }
- switch(c) {
- case '@':
- break;
- case 'A':
- mover(0, j ? arg[0] : 1);
- break;
- case 'B':
- mover(0, j ? -arg[0] : -1);
- break;
- case 'C':
- mover(j ? arg[0] : 1, 0);
- break;
- case 'D':
- mover(j ? -arg[0] : -1, 0);
- break;
- case 'E':
- /* movel(j ? arg[0] : 1); */
- break;
- case 'F':
- /* movel(j ? -arg[0] : -1); */
- break;
- case '`':
- case 'G':
- movea(j ? arg[0] : 1, cy);
- break;
- case 'f':
- case 'H':
- movea(arg[1] ? arg[1] : 1, arg[0] ? arg[0] : 1);
- case 'L':
- /* insline(j ? arg[0] : 1); */
- break;
- case 'M':
- /* delline(j ? arg[0] : 1); */
- break;
- case 'P':
- break;
- case 'S':
- scroll(j ? arg[0] : 1);
- break;
- case 'T':
- scroll(j ? -arg[0] : -1);
- break;
- case 'd':
- movea(cx, j ? arg[0] : 1);
- break;
- case 'm':
- for(i = 0; i < j; i++) {
- if(arg[i] >= 30 && arg[i] <= 37)
- cmd("#%d", arg[i] - 30);
- if(arg[i] >= 40 && arg[i] <= 47)
- cmd("|%d", arg[i] - 40);
- /* xterm bright colors */
- if(arg[i] >= 90 && arg[i] <= 97)
- cmd("#%d", arg[i] - 90);
- if(arg[i] >= 100 && arg[i] <= 107)
- cmd("|%d", arg[i] - 100);
- switch(arg[i]) {
- case 0:
- case 22:
- if(bold)
- cmd("bold");
- case 1:
- if(!bold)
- cmd("bold");
- break;
- }
- }
- break;
- }
- break;
- default:
- putchar('\033');
- ungetc(c, fptm);
- }
-}
-
-void
-scroll(int l) {
- cmd("seek(%d,%d)", cx, cy + l);
-}
-
-void
-getpty(void) {
- char *ptsdev;
-
-#if defined(_GNU_SOURCE)
- ptm = getpt();
-#elif _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
- ptm = posix_openpt(O_RDWR);
-#else
- ptm = open("/dev/ptmx", O_RDWR);
- if(ptm == -1)
- if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1)
- err(EXIT_FAILURE, "cannot open pty");
-#endif
-#if defined(_XOPEN_SOURCE)
- if(ptm != -1) {
- if(grantpt(ptm) == -1)
- err(EXIT_FAILURE, "cannot grant access to pty");
- if(unlockpt(ptm) == -1)
- err(EXIT_FAILURE, "cannot unlock pty");
- ptsdev = ptsname(ptm);
- if(!ptsdev)
- err(EXIT_FAILURE, "slave pty name undefined");
- pts = open(ptsdev, O_RDWR);
- if(pts == -1)
- err(EXIT_FAILURE, "cannot open slave pty");
- }
- else
- err(EXIT_FAILURE, "cannot open pty");
-#endif
-}
-
-void
-shell(void) {
- static char *shell = NULL;
-
- if(!shell && !(shell = getenv("SHELL")))
- shell = "/bin/sh";
- pid = fork();
- switch(pid) {
- case -1:
- err(EXIT_FAILURE, "cannot fork");
- case 0:
- setsid();
- dup2(pts, STDIN_FILENO);
- dup2(pts, STDOUT_FILENO);
- dup2(pts, STDERR_FILENO);
- close(ptm);
- putenv("TERM=vt102");
- execvp(shell, NULL);
- break;
- default:
- close(pts);
- signal(SIGCHLD, sigchld);
- }
-}
-
-void
-sigchld(int n) {
- int ret;
-
- if(waitpid(pid, &ret, 0) == -1)
- err(EXIT_FAILURE, "waiting for child failed");
- if(WIFEXITED(ret))
- exit(WEXITSTATUS(ret));
- else
- exit(EXIT_SUCCESS);
-}
-
-char
-unbuffer(void) {
- char c;
-
- c = buf.data[buf.s++];
- buf.s %= LENGTH(buf.data);
- buf.n--;
- return c;
-}
-
-int
-main(int argc, char *argv[]) {
- fd_set rfds;
-
- if(argc == 2 && !strcmp("-v", argv[1]))
- errx(EXIT_SUCCESS, "std-"VERSION", © 2008 Matthias-Christian Ott");
- else if(argc == 1)
- errx(EXIT_FAILURE, "usage: std [-v]");
- getpty();
- shell();
- FD_ZERO(&rfds);
- FD_SET(STDIN_FILENO, &rfds);
- FD_SET(ptm, &rfds);
- if(!(fptm = fdopen(ptm, "r+")))
- err(EXIT_FAILURE, "cannot open pty");
- if(fcntl(ptm, F_SETFL, O_NONBLOCK) == -1)
- err(EXIT_FAILURE, "cannot set pty to non-blocking mode");
- if(fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK) == -1)
- err(EXIT_FAILURE, "cannot set stdin to non-blocking mode");
- for(;;) {
- if(select(MAX(ptm, STDIN_FILENO) + 1, &rfds, NULL, NULL, NULL) == -1)
- err(EXIT_FAILURE, "cannot select");
- if(FD_ISSET(ptm, &rfds)) {
- for(;;) {
- if((c = getc(fptm)) == EOF) {
- if(feof(fptm)) {
- FD_CLR(ptm, &rfds);
- fflush(fptm);
- break;
- }
- if(errno != EAGAIN)
- err(EXIT_FAILURE, "cannot read from pty");
- fflush(stdout);
- break;
- }
- switch(c) {
- case '\033':
- parseesc();
- break;
- default:
- putchar(c);
- }
- }
- fflush(stdout);
- }
- if(FD_ISSET(STDIN_FILENO, &rfds)) {
- for(;;) {
- if((c = getchar()) == EOF) {
- if(feof(stdin)) {
- FD_CLR(STDIN_FILENO, &rfds);
- fflush(fptm);
- break;
- }
- if(errno != EAGAIN)
- err(EXIT_FAILURE, "cannot read from stdin");
- fflush(fptm);
- break;
- }
- switch(c) {
- case ':':
- parsecmd();
- break;
- default:
- putc(c, fptm);
- }
- }
- fflush(fptm);
- }
- }
- return 0;
-}
Received on Sun May 10 2009 - 12:17:13 UTC