diff --git a/.format-exclude b/.format-exclude index 76aa4d9c8b..2fe96d284a 100644 --- a/.format-exclude +++ b/.format-exclude @@ -18,6 +18,7 @@ bin/tetris/ bin/echo/ bin/ln/ bin/chmod/ +bin/st/ lib/libutil/ lib/libterminfo/ lib/libc/ diff --git a/bin/Makefile b/bin/Makefile index 96d3f00965..6291bd5dda 100644 --- a/bin/Makefile +++ b/bin/Makefile @@ -3,7 +3,7 @@ TOPDIR = $(realpath ..) SUBDIR = ksh mandelbrot ps \ - sandbox setwinsize stty test_rtc tetris utest + sandbox setwinsize st stty test_rtc tetris utest all: build diff --git a/bin/st/LICENSE b/bin/st/LICENSE new file mode 100644 index 0000000000..d80eb47f3e --- /dev/null +++ b/bin/st/LICENSE @@ -0,0 +1,34 @@ +MIT/X Consortium License + +© 2014-2020 Hiltjo Posthuma +© 2018 Devin J. Pohly +© 2014-2017 Quentin Rameau +© 2009-2012 Aurélien APTEL +© 2008-2017 Anselm R Garbe +© 2012-2017 Roberto E. Vargas Caballero +© 2012-2016 Christoph Lohmann <20h at r-36 dot net> +© 2013 Eon S. Jeon +© 2013 Alexander Sedov +© 2013 Mark Edgar +© 2013-2014 Eric Pruitt +© 2013 Michael Forney +© 2013-2014 Markus Teich +© 2014-2015 Laslo Hunhold + +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. diff --git a/bin/st/Makefile b/bin/st/Makefile new file mode 100644 index 0000000000..91b3a397c8 --- /dev/null +++ b/bin/st/Makefile @@ -0,0 +1,13 @@ +TOPDIR = $(realpath ../..) + +PROGRAM = st +SOURCES = win.c font.c input.c st.c + +LDLIBS = -lutil + +# TODO: Why those are needed with gcc on MIPS ? +WFLAGS = -Wno-error=strict-prototypes -Wno-error=unused-variable \ + -Wno-error=type-limits -Wno-error=implicit-fallthrough \ + -Wno-error=maybe-uninitialized + +include $(TOPDIR)/build/build.prog.mk diff --git a/bin/st/config.h b/bin/st/config.h new file mode 100644 index 0000000000..8efc1b13ce --- /dev/null +++ b/bin/st/config.h @@ -0,0 +1,140 @@ +/* See LICENSE file for copyright and license details. */ + +static const char *fb_dev = "/dev/fb0"; +static const char *ev_dev = "/dev/input/event0"; +static const char *font_file = "/etc/spleen-8x16.fnt"; + +/* + * appearance + * + * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html + */ +static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true"; +static int borderpx = 2; + +/* + * What program is execed by st depends of these precedence rules: + * 1: program passed with -e + * 2: scroll and/or utmp + * 3: SHELL environment variable + * 4: value of shell in /etc/passwd + * 5: value of shell in config.h + */ +static char *shell = "/bin/sh"; +char *utmp = NULL; +/* scroll program: to enable use a string like "scroll" */ +char *scroll = NULL; +char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400"; + +/* identification sequence returned in DA and DECID */ +char *vtiden = "\033[?6c"; + +/* Kerning / character bounding-box multipliers */ +static float cwscale = 1.0; +static float chscale = 1.0; + +/* + * word delimiter string + * + * More advanced example: L" `'\"()[]{}" + */ +wchar_t *worddelimiters = L" "; + +/* selection timeouts (in milliseconds) */ +static unsigned int doubleclicktimeout = 300; +static unsigned int tripleclicktimeout = 600; + +/* alt screens */ +int allowaltscreen = 1; + +/* allow certain non-interactive (insecure) window operations such as: + setting the clipboard text */ +int allowwindowops = 0; + +/* + * draw latency range in ms - from new content/keypress/etc until drawing. + * within this range, st draws when content stops arriving (idle). mostly it's + * near minlatency, but it waits longer for slow updates to avoid partial draw. + * low minlatency will tear/flicker more, as it can "detect" idle too early. + */ +static double minlatency = 8; +static double maxlatency = 33; + +/* + * blinking timeout (set to 0 to disable blinking) for the terminal blinking + * attribute. + */ +static unsigned int blinktimeout = 800; + +/* + * thickness of underline and bar cursors + */ +static unsigned int cursorthickness = 2; + +/* default TERM value */ +char *termname = "st-256color"; + +/* + * spaces per tab + * + * When you are changing this value, don't forget to adapt the »it« value in + * the st.info and appropriately install the st.info in the environment where + * you use this st version. + * + * it#$tabspaces, + * + * Secondly make sure your kernel is not expanding tabs. When running `stty + * -a` »tab0« should appear. You can tell the terminal to not expand tabs by + * running following command: + * + * stty tabs + */ +unsigned int tabspaces = 8; + +static const unsigned colors[] = { + [0x0] = 0x000000, + [0x1] = 0xaa0000, + [0x2] = 0x00aa00, + [0x3] = 0xaa5500, + [0x4] = 0x0000aa, + [0x5] = 0xaa00aa, + [0x6] = 0x00aaaa, + [0x7] = 0xaaaaaa, + [0x8] = 0x555555, + [0x9] = 0xff5555, + [0xA] = 0x55ff55, + [0xB] = 0xffff55, + [0xC] = 0x5555ff, + [0xD] = 0xff55ff, + [0xE] = 0x55ffff, + [0xF] = 0xffffff +}; + +/* + * Default colors (colorname index) + * foreground, background, cursor, reverse cursor + */ +unsigned int defaultfg = 268; +unsigned int defaultbg = 259; +unsigned int defaultcs = 256; +static unsigned int defaultrcs = 257; + +/* + * Default shape of cursor + * 2: Block ("█") + * 4: Underline ("_") + * 6: Bar ("|") + * 7: Snowman ("☃") + */ +static unsigned int cursorshape = 2; + + +/* + * Default colour and shape of the mouse cursor + */ + +/* + * Color used to display font attributes when fontconfig selected a font which + * doesn't match the ones requested. + */ +static unsigned int defaultattr = 11; diff --git a/bin/st/font.c b/bin/st/font.c new file mode 100644 index 0000000000..a8a5de0c32 --- /dev/null +++ b/bin/st/font.c @@ -0,0 +1,86 @@ +#include "font.h" + +#include +#include +#include +#include +#include +#include +#include + +#define DEFWIDTH 8 +#define DEFHEIGHT 16 + +font_t *font_load(const char *path) { + int ffd, res; + int len; + struct stat st; + + if ((ffd = open(path, O_RDONLY, 0)) < 0) + return NULL; + + font_t *font = malloc(sizeof(font_t)); + + font->fontwidth = DEFWIDTH; + font->fontheight = DEFHEIGHT; + font->firstchar = 0; + font->numchars = 256; + font->stride = (DEFWIDTH + 7) / 8; + font->name = strdup(path); + + len = font->numchars * font->fontheight * font->stride; + if (fstat(ffd, &st) == 0) { + if (len != st.st_size) { + uint32_t foo = 0; + char b[65]; + len = st.st_size; + /* read header */ + res = read(ffd, b, 4); + if (strncmp(b, "WSFT", 4) != 0) + goto err; + + res = read(ffd, b, 64); + b[64] = 0; + free(font->name); + font->name = strdup(b); + + res = read(ffd, &foo, 4); + font->firstchar = le32toh(foo); + res = read(ffd, &foo, 4); + font->numchars = le32toh(foo); + res = read(ffd, &foo, 4); + font->encoding = le32toh(foo); + res = read(ffd, &foo, 4); + font->fontwidth = le32toh(foo); + res = read(ffd, &foo, 4); + font->fontheight = le32toh(foo); + res = read(ffd, &foo, 4); + font->stride = le32toh(foo); + res = read(ffd, &foo, 4); + font->bitorder = le32toh(foo); + res = read(ffd, &foo, 4); + font->byteorder = le32toh(foo); + len = font->numchars * font->fontheight * font->stride; + } + } + + font->data = malloc(len); + res = read(ffd, font->data, len); + if (res != len) { + free(font->data); + goto err; + } + + close(ffd); + return font; + +err: + free(font); + close(ffd); + return NULL; +} + +char *font_glyph(font_t *font, int c) { + return (char *)font->data + + (c - font->firstchar) * font->fontheight * font->stride; +} diff --git a/bin/st/font.h b/bin/st/font.h new file mode 100644 index 0000000000..27685a06e8 --- /dev/null +++ b/bin/st/font.h @@ -0,0 +1,15 @@ +#ifndef FONT_H +#define FONT_H + +typedef struct { + char *name; + int firstchar, numchars; + int fontwidth, fontheight, stride; + int encoding, bitorder, byteorder; + void *data; +} font_t; + +font_t *font_load(const char *path); +char *font_glyph(font_t *font, int c); + +#endif diff --git a/bin/st/input.c b/bin/st/input.c new file mode 100644 index 0000000000..9462461193 --- /dev/null +++ b/bin/st/input.c @@ -0,0 +1,49 @@ +#include "input.h" + +#include +#include +#include +#include +#include +#include + +#include "kbio.h" +#include "kdbtable.h" + +#include "st.h" + +struct { + int fd; +} input; + +static void handle_event(struct input_event *ie) { + char buf[64]; + + if (ie->type != EV_KEY) + return; + + return; + if (ie->value != 0) { + buf[0] = key_map.key[ie->code].map[0]; + buf[1] = 0; + ttywrite(buf, 1, 1); + } +} + +int input_init(const char *ev_dev) { + if ((input.fd = open(ev_dev, O_RDONLY)) < 0) + return 0; + return 1; +} + +void input_read(void) { + struct input_event ie; + int ret; + + if ((ret = read(input.fd, &ie, sizeof(struct input_event))) > 0) + handle_event(&ie); +} + +int input_getfd(void) { + return input.fd; +} \ No newline at end of file diff --git a/bin/st/input.h b/bin/st/input.h new file mode 100644 index 0000000000..db2a2e7243 --- /dev/null +++ b/bin/st/input.h @@ -0,0 +1,8 @@ +#ifndef INPUT_H +#define INPUT_H + +int input_init(const char *ev_dev); +void input_read(void); +int input_getfd(void); + +#endif \ No newline at end of file diff --git a/bin/st/kbio.h b/bin/st/kbio.h new file mode 100644 index 0000000000..d02430a593 --- /dev/null +++ b/bin/st/kbio.h @@ -0,0 +1,120 @@ +/*- + * $FreeBSD$ + */ + +#ifndef _KBIO_H_ +#define _KBIO_H_ + +#include + +/* get/set key map/accent map/function key strings */ + +#define NUM_KEYS 256 /* number of keys in table */ +#define NUM_STATES 8 /* states per key */ +#define ALTGR_OFFSET 128 /* offset for altlock keys */ + +#define NUM_FKEYS 96 /* max number of function keys */ +#define MAXFK 16 /* max length of a function key str */ + +typedef struct { + unsigned int map[NUM_STATES]; + unsigned char spcl; + unsigned char flgs; +#define FLAG_LOCK_O 0 +#define FLAG_LOCK_C 1 +#define FLAG_LOCK_N 2 +} keyent_t; + +typedef struct { + unsigned short n_keys; + keyent_t key[NUM_KEYS]; +} keymap_t; + +/* defines for "special" keys (spcl bit set in keymap) */ +#define NOP 0x00 /* nothing (dead key) */ +#define LSH 0x02 /* left shift key */ +#define RSH 0x03 /* right shift key */ +#define CLK 0x04 /* caps lock key */ +#define NLK 0x05 /* num lock key */ +#define SLK 0x06 /* scroll lock key */ +#define LALT 0x07 /* left alt key */ +#define BTAB 0x08 /* backwards tab */ +#define LCTR 0x09 /* left control key */ +#define NEXT 0x0a /* switch to next screen */ +#define F_SCR 0x0b /* switch to first screen */ +#define L_SCR 0x1a /* switch to last screen */ +#define F_FN 0x1b /* first function key */ +#define L_FN 0x7a /* last function key */ +/* 0x7b-0x7f reserved do not use ! */ +#define RCTR 0x80 /* right control key */ +#define RALT 0x81 /* right alt (altgr) key */ +#define ALK 0x82 /* alt lock key */ +#define ASH 0x83 /* alt shift key */ +#define META 0x84 /* meta key */ +#define RBT 0x85 /* boot machine */ +#define DBG 0x86 /* call debugger */ +#define SUSP 0x87 /* suspend power (APM) */ +#define SPSC 0x88 /* toggle splash/text screen */ + +#define F_ACC DGRA /* first accent key */ +#define DGRA 0x89 /* grave */ +#define DACU 0x8a /* acute */ +#define DCIR 0x8b /* circumflex */ +#define DTIL 0x8c /* tilde */ +#define DMAC 0x8d /* macron */ +#define DBRE 0x8e /* breve */ +#define DDOT 0x8f /* dot */ +#define DUML 0x90 /* umlaut/diaresis */ +#define DDIA 0x90 /* diaresis */ +#define DSLA 0x91 /* slash */ +#define DRIN 0x92 /* ring */ +#define DCED 0x93 /* cedilla */ +#define DAPO 0x94 /* apostrophe */ +#define DDAC 0x95 /* double acute */ +#define DOGO 0x96 /* ogonek */ +#define DCAR 0x97 /* caron */ +#define L_ACC DCAR /* last accent key */ + +#define STBY 0x98 /* Go into standby mode (apm) */ +#define PREV 0x99 /* switch to previous screen */ +#define PNC 0x9a /* force system panic */ +#define LSHA 0x9b /* left shift key / alt lock */ +#define RSHA 0x9c /* right shift key / alt lock */ +#define LCTRA 0x9d /* left ctrl key / alt lock */ +#define RCTRA 0x9e /* right ctrl key / alt lock */ +#define LALTA 0x9f /* left alt key / alt lock */ +#define RALTA 0xa0 /* right alt key / alt lock */ +#define HALT 0xa1 /* halt machine */ +#define PDWN 0xa2 /* halt machine and power down */ +#define PASTE 0xa3 /* paste from cut-paste buffer */ + +#define F(x) ((x)+F_FN-1) +#define S(x) ((x)+F_SCR-1) +#define ACC(x) ((x)+F_ACC) + +typedef struct { + unsigned char str[MAXFK]; + unsigned char len; +} fkeytab_t; + +/* flags set to the return value in the KD_XLATE mode */ + +#define NOKEY 0x01000000 /* no key pressed marker */ +#define FKEY 0x02000000 /* function key marker */ +#define MKEY 0x04000000 /* meta key marker (prepend ESC)*/ +#define BKEY 0x08000000 /* backtab (ESC [ Z) */ + +#define SPCLKEY 0x80000000 /* special key */ +#define RELKEY 0x40000000 /* key released */ +#define ERRKEY 0x20000000 /* error */ + +/* + * The top byte is used to store the flags. This means there are 24 + * bits left to store the actual character. Because UTF-8 can encode + * 2^21 different characters, this is good enough to get Unicode + * working. + */ +#define KEYCHAR(c) ((c) & 0x00ffffff) +#define KEYFLAGS(c) ((c) & ~0x00ffffff) + +#endif /* !_KBIO_H_ */ diff --git a/bin/st/kdbtable.h b/bin/st/kdbtable.h new file mode 100644 index 0000000000..f121d9ba95 --- /dev/null +++ b/bin/st/kdbtable.h @@ -0,0 +1,181 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 1992-1998 Sen Schmidt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer, + * without modification, immediately at the beginning of the file. + * 2. 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. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + * + * $FreeBSD$ + */ + +#ifndef KBD_DFLT_KEYMAP +#define KBD_DFLT_KEYMAP + +static keymap_t key_map = { 0x6d, { +/* alt + * scan cntrl alt alt cntrl + * code base shift cntrl shift alt shift cntrl shift spcl flgs + * --------------------------------------------------------------------------- + */ +/*00*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*01*/{{ 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, DBG, 0x1B, }, 0x02,0x00 }, +/*02*/{{ '1', '!', NOP, NOP, '1', '!', NOP, NOP, }, 0x33,0x00 }, +/*03*/{{ '2', '@', 0x00, 0x00, '2', '@', 0x00, 0x00, }, 0x00,0x00 }, +/*04*/{{ '3', '#', NOP, NOP, '3', '#', NOP, NOP, }, 0x33,0x00 }, +/*05*/{{ '4', '$', NOP, NOP, '4', '$', NOP, NOP, }, 0x33,0x00 }, +/*06*/{{ '5', '%', NOP, NOP, '5', '%', NOP, NOP, }, 0x33,0x00 }, +/*07*/{{ '6', '^', 0x1E, 0x1E, '6', '^', 0x1E, 0x1E, }, 0x00,0x00 }, +/*08*/{{ '7', '&', NOP, NOP, '7', '&', NOP, NOP, }, 0x33,0x00 }, +/*09*/{{ '8', '*', NOP, NOP, '8', '*', NOP, NOP, }, 0x33,0x00 }, +/*0a*/{{ '9', '(', NOP, NOP, '9', '(', NOP, NOP, }, 0x33,0x00 }, +/*0b*/{{ '0', ')', NOP, NOP, '0', ')', NOP, NOP, }, 0x33,0x00 }, +/*0c*/{{ '-', '_', 0x1F, 0x1F, '-', '_', 0x1F, 0x1F, }, 0x00,0x00 }, +/*0d*/{{ '=', '+', NOP, NOP, '=', '+', NOP, NOP, }, 0x33,0x00 }, +/*0e*/{{ 0x08, 0x08, 0x7F, 0x7F, 0x08, 0x08, 0x7F, 0x7F, }, 0x00,0x00 }, +/*0f*/{{ 0x09, BTAB, NOP, NOP, 0x09, BTAB, NOP, NOP, }, 0x77,0x00 }, +/*10*/{{ 'q', 'Q', 0x11, 0x11, 'q', 'Q', 0x11, 0x11, }, 0x00,0x01 }, +/*11*/{{ 'w', 'W', 0x17, 0x17, 'w', 'W', 0x17, 0x17, }, 0x00,0x01 }, +/*12*/{{ 'e', 'E', 0x05, 0x05, 'e', 'E', 0x05, 0x05, }, 0x00,0x01 }, +/*13*/{{ 'r', 'R', 0x12, 0x12, 'r', 'R', 0x12, 0x12, }, 0x00,0x01 }, +/*14*/{{ 't', 'T', 0x14, 0x14, 't', 'T', 0x14, 0x14, }, 0x00,0x01 }, +/*15*/{{ 'y', 'Y', 0x19, 0x19, 'y', 'Y', 0x19, 0x19, }, 0x00,0x01 }, +/*16*/{{ 'u', 'U', 0x15, 0x15, 'u', 'U', 0x15, 0x15, }, 0x00,0x01 }, +/*17*/{{ 'i', 'I', 0x09, 0x09, 'i', 'I', 0x09, 0x09, }, 0x00,0x01 }, +/*18*/{{ 'o', 'O', 0x0F, 0x0F, 'o', 'O', 0x0F, 0x0F, }, 0x00,0x01 }, +/*19*/{{ 'p', 'P', 0x10, 0x10, 'p', 'P', 0x10, 0x10, }, 0x00,0x01 }, +/*1a*/{{ '[', '{', 0x1B, 0x1B, '[', '{', 0x1B, 0x1B, }, 0x00,0x00 }, +/*1b*/{{ ']', '}', 0x1D, 0x1D, ']', '}', 0x1D, 0x1D, }, 0x00,0x00 }, +/*1c*/{{ 0x0D, 0x0D, 0x0A, 0x0A, 0x0D, 0x0D, 0x0A, 0x0A, }, 0x00,0x00 }, +/*1d*/{{ LCTR, LCTR, LCTR, LCTR, LCTR, LCTR, LCTR, LCTR, }, 0xFF,0x00 }, +/*1e*/{{ 'a', 'A', 0x01, 0x01, 'a', 'A', 0x01, 0x01, }, 0x00,0x01 }, +/*1f*/{{ 's', 'S', 0x13, 0x13, 's', 'S', 0x13, 0x13, }, 0x00,0x01 }, +/*20*/{{ 'd', 'D', 0x04, 0x04, 'd', 'D', 0x04, 0x04, }, 0x00,0x01 }, +/*21*/{{ 'f', 'F', 0x06, 0x06, 'f', 'F', 0x06, 0x06, }, 0x00,0x01 }, +/*22*/{{ 'g', 'G', 0x07, 0x07, 'g', 'G', 0x07, 0x07, }, 0x00,0x01 }, +/*23*/{{ 'h', 'H', 0x08, 0x08, 'h', 'H', 0x08, 0x08, }, 0x00,0x01 }, +/*24*/{{ 'j', 'J', 0x0A, 0x0A, 'j', 'J', 0x0A, 0x0A, }, 0x00,0x01 }, +/*25*/{{ 'k', 'K', 0x0B, 0x0B, 'k', 'K', 0x0B, 0x0B, }, 0x00,0x01 }, +/*26*/{{ 'l', 'L', 0x0C, 0x0C, 'l', 'L', 0x0C, 0x0C, }, 0x00,0x01 }, +/*27*/{{ ';', ':', NOP, NOP, ';', ':', NOP, NOP, }, 0x33,0x00 }, +/*28*/{{ '\'', '"', NOP, NOP, '\'', '"', NOP, NOP, }, 0x33,0x00 }, +/*29*/{{ '`', '~', NOP, NOP, '`', '~', NOP, NOP, }, 0x33,0x00 }, +/*2a*/{{ LSH, LSH, LSH, LSH, LSH, LSH, LSH, LSH, }, 0xFF,0x00 }, +/*2b*/{{ '\\', '|', 0x1C, 0x1C, '\\', '|', 0x1C, 0x1C, }, 0x00,0x00 }, +/*2c*/{{ 'z', 'Z', 0x1A, 0x1A, 'z', 'Z', 0x1A, 0x1A, }, 0x00,0x01 }, +/*2d*/{{ 'x', 'X', 0x18, 0x18, 'x', 'X', 0x18, 0x18, }, 0x00,0x01 }, +/*2e*/{{ 'c', 'C', 0x03, 0x03, 'c', 'C', 0x03, 0x03, }, 0x00,0x01 }, +/*2f*/{{ 'v', 'V', 0x16, 0x16, 'v', 'V', 0x16, 0x16, }, 0x00,0x01 }, +/*30*/{{ 'b', 'B', 0x02, 0x02, 'b', 'B', 0x02, 0x02, }, 0x00,0x01 }, +/*31*/{{ 'n', 'N', 0x0E, 0x0E, 'n', 'N', 0x0E, 0x0E, }, 0x00,0x01 }, +/*32*/{{ 'm', 'M', 0x0D, 0x0D, 'm', 'M', 0x0D, 0x0D, }, 0x00,0x01 }, +/*33*/{{ ',', '<', NOP, NOP, ',', '<', NOP, NOP, }, 0x33,0x00 }, +/*34*/{{ '.', '>', NOP, NOP, '.', '>', NOP, NOP, }, 0x33,0x00 }, +/*35*/{{ '/', '?', NOP, NOP, '/', '?', NOP, NOP, }, 0x33,0x00 }, +/*36*/{{ RSH, RSH, RSH, RSH, RSH, RSH, RSH, RSH, }, 0xFF,0x00 }, +/*37*/{{ '*', '*', '*', '*', '*', '*', '*', '*', }, 0x00,0x00 }, +/*38*/{{ LALT, LALT, LALT, LALT, LALT, LALT, LALT, LALT, }, 0xFF,0x00 }, +/*39*/{{ ' ', ' ', 0x00, ' ', ' ', ' ', SUSP, ' ', }, 0x02,0x00 }, +/*3a*/{{ CLK, CLK, CLK, CLK, CLK, CLK, CLK, CLK, }, 0xFF,0x00 }, +/*3b*/{{ F( 1), F(13), F(25), F(37), S( 1), S(11), S( 1), S(11),}, 0xFF,0x00 }, +/*3c*/{{ F( 2), F(14), F(26), F(38), S( 2), S(12), S( 2), S(12),}, 0xFF,0x00 }, +/*3d*/{{ F( 3), F(15), F(27), F(39), S( 3), S(13), S( 3), S(13),}, 0xFF,0x00 }, +/*3e*/{{ F( 4), F(16), F(28), F(40), S( 4), S(14), S( 4), S(14),}, 0xFF,0x00 }, +/*3f*/{{ F( 5), F(17), F(29), F(41), S( 5), S(15), S( 5), S(15),}, 0xFF,0x00 }, +/*40*/{{ F( 6), F(18), F(30), F(42), S( 6), S(16), S( 6), S(16),}, 0xFF,0x00 }, +/*41*/{{ F( 7), F(19), F(31), F(43), S( 7), S( 7), S( 7), S( 7),}, 0xFF,0x00 }, +/*42*/{{ F( 8), F(20), F(32), F(44), S( 8), S( 8), S( 8), S( 8),}, 0xFF,0x00 }, +/*43*/{{ F( 9), F(21), F(33), F(45), S( 9), S( 9), S( 9), S( 9),}, 0xFF,0x00 }, +/*44*/{{ F(10), F(22), F(34), F(46), S(10), S(10), S(10), S(10),}, 0xFF,0x00 }, +/*45*/{{ NLK, NLK, NLK, NLK, NLK, NLK, NLK, NLK, }, 0xFF,0x00 }, +/*46*/{{ SLK, SLK, SLK, SLK, SLK, SLK, SLK, SLK, }, 0xFF,0x00 }, +/*47*/{{ F(49), '7', '7', '7', '7', '7', '7', '7', }, 0x80,0x02 }, +/*48*/{{ F(50), '8', '8', '8', '8', '8', '8', '8', }, 0x80,0x02 }, +/*49*/{{ F(51), '9', '9', '9', '9', '9', '9', '9', }, 0x80,0x02 }, +/*4a*/{{ F(52), '-', '-', '-', '-', '-', '-', '-', }, 0x80,0x02 }, +/*4b*/{{ F(53), '4', '4', '4', '4', '4', '4', '4', }, 0x80,0x02 }, +/*4c*/{{ F(54), '5', '5', '5', '5', '5', '5', '5', }, 0x80,0x02 }, +/*4d*/{{ F(55), '6', '6', '6', '6', '6', '6', '6', }, 0x80,0x02 }, +/*4e*/{{ F(56), '+', '+', '+', '+', '+', '+', '+', }, 0x80,0x02 }, +/*4f*/{{ F(57), '1', '1', '1', '1', '1', '1', '1', }, 0x80,0x02 }, +/*50*/{{ F(58), '2', '2', '2', '2', '2', '2', '2', }, 0x80,0x02 }, +/*51*/{{ F(59), '3', '3', '3', '3', '3', '3', '3', }, 0x80,0x02 }, +/*52*/{{ F(60), '0', '0', '0', '0', '0', '0', '0', }, 0x80,0x02 }, +/*53*/{{ 0x7F, '.', '.', '.', '.', '.', RBT, RBT, }, 0x03,0x02 }, +/*54*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*55*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*56*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*57*/{{ F(11), F(23), F(35), F(47), S(11), S(11), S(11), S(11),}, 0xFF,0x00 }, +/*58*/{{ F(12), F(24), F(36), F(48), S(12), S(12), S(12), S(12),}, 0xFF,0x00 }, +/*59*/{{ 0x0D, 0x0D, 0x0A, 0x0A, 0x0D, 0x0D, 0x0A, 0x0A, }, 0x00,0x00 }, +/*5a*/{{ RCTR, RCTR, RCTR, RCTR, RCTR, RCTR, RCTR, RCTR, }, 0xFF,0x00 }, +/*5b*/{{ '/', '/', '/', '/', '/', '/', '/', '/', }, 0x00,0x02 }, +/*5c*/{{ NEXT, PREV, DBG, DBG, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*5d*/{{ RALT, RALT, RALT, RALT, RALT, RALT, RALT, RALT, }, 0xFF,0x00 }, +/*5e*/{{ F(49), F(49), F(49), F(49), F(49), F(49), F(49), F(49),}, 0xFF,0x00 }, +/*5f*/{{ F(50), F(50), F(50), F(50), F(50), F(50), F(50), F(50),}, 0xFF,0x00 }, +/*60*/{{ F(51), F(51), F(51), F(51), F(51), F(51), F(51), F(51),}, 0xFF,0x00 }, +/*61*/{{ F(53), F(53), F(53), F(53), F(53), F(53), F(53), F(53),}, 0xFF,0x00 }, +/*62*/{{ F(55), F(55), F(55), F(55), F(55), F(55), F(55), F(55),}, 0xFF,0x00 }, +/*63*/{{ F(57), F(57), F(57), F(57), F(57), F(57), F(57), F(57),}, 0xFF,0x00 }, +/*64*/{{ F(58), F(58), F(58), F(58), F(58), F(58), F(58), F(58),}, 0xFF,0x00 }, +/*65*/{{ F(59), F(59), F(59), F(59), F(59), F(59), F(59), F(59),}, 0xFF,0x00 }, +/*66*/{{ F(60),PASTE, F(60), F(60), F(60), F(60), F(60), F(60),}, 0xFF,0x00 }, +/*67*/{{ F(61), F(61), F(61), F(61), F(61), F(61), RBT, F(61),}, 0xFF,0x00 }, +/*68*/{{ SLK, SPSC, SLK, SPSC, SUSP, NOP, SUSP, NOP, }, 0xFF,0x00 }, +/*69*/{{ F(62), F(62), F(62), F(62), F(62), F(62), F(62), F(62),}, 0xFF,0x00 }, +/*6a*/{{ F(63), F(63), F(63), F(63), F(63), F(63), F(63), F(63),}, 0xFF,0x00 }, +/*6b*/{{ F(64), F(64), F(64), F(64), F(64), F(64), F(64), F(64),}, 0xFF,0x00 }, +/*6c*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +} }; + +static fkeytab_t fkey_tab[96] = { +/* 01-04 */ {"\033[M", 3}, {"\033[N", 3}, {"\033[O", 3}, {"\033[P", 3}, +/* 05-08 */ {"\033[Q", 3}, {"\033[R", 3}, {"\033[S", 3}, {"\033[T", 3}, +/* 09-12 */ {"\033[U", 3}, {"\033[V", 3}, {"\033[W", 3}, {"\033[X", 3}, +/* 13-16 */ {"\033[Y", 3}, {"\033[Z", 3}, {"\033[a", 3}, {"\033[b", 3}, +/* 17-20 */ {"\033[c", 3}, {"\033[d", 3}, {"\033[e", 3}, {"\033[f", 3}, +/* 21-24 */ {"\033[g", 3}, {"\033[h", 3}, {"\033[i", 3}, {"\033[j", 3}, +/* 25-28 */ {"\033[k", 3}, {"\033[l", 3}, {"\033[m", 3}, {"\033[n", 3}, +/* 29-32 */ {"\033[o", 3}, {"\033[p", 3}, {"\033[q", 3}, {"\033[r", 3}, +/* 33-36 */ {"\033[s", 3}, {"\033[t", 3}, {"\033[u", 3}, {"\033[v", 3}, +/* 37-40 */ {"\033[w", 3}, {"\033[x", 3}, {"\033[y", 3}, {"\033[z", 3}, +/* 41-44 */ {"\033[@", 3}, {"\033[[", 3}, {"\033[\\",3}, {"\033[]", 3}, +/* 45-48 */ {"\033[^", 3}, {"\033[_", 3}, {"\033[`", 3}, {"\033[{", 3}, +/* 49-52 */ {"\033[H", 3}, {"\033[A", 3}, {"\033[I", 3}, {"-" , 1}, +/* 53-56 */ {"\033[D", 3}, {"\033[E", 3}, {"\033[C", 3}, {"+" , 1}, +/* 57-60 */ {"\033[F", 3}, {"\033[B", 3}, {"\033[G", 3}, {"\033[L", 3}, +/* 61-64 */ {"\177", 1}, {"\033[J", 3}, {"\033[~", 3}, {"\033[}", 3}, +/* 65-68 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 69-72 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 73-76 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 77-80 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 81-84 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 85-88 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 89-92 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} , +/* 93-96 */ {"", 0} , {"", 0} , {"", 0} , {"", 0} +}; + + +#endif /* !KBD_DFLT_KEYMAP */ \ No newline at end of file diff --git a/bin/st/st.c b/bin/st/st.c new file mode 100644 index 0000000000..bae4a618b7 --- /dev/null +++ b/bin/st/st.c @@ -0,0 +1,2441 @@ +/* See LICENSE for license details. */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "st.h" +#include "win.h" + +/* Arbitrary sizes */ +#define UTF_INVALID 0xFFFD +#define UTF_SIZ 4 +#define ESC_BUF_SIZ (128 * UTF_SIZ) +#define ESC_ARG_SIZ 16 +#define STR_BUF_SIZ ESC_BUF_SIZ +#define STR_ARG_SIZ ESC_ARG_SIZ + +/* macros */ +#define IS_SET(flag) ((term.mode & (flag)) != 0) +#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == 0x7f) +#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f)) +#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c)) +#define ISDELIM(u) (u && wcschr(worddelimiters, u)) + +enum term_mode { + MODE_WRAP = 1 << 0, + MODE_INSERT = 1 << 1, + MODE_ALTSCREEN = 1 << 2, + MODE_CRLF = 1 << 3, + MODE_ECHO = 1 << 4, + MODE_PRINT = 1 << 5, + MODE_UTF8 = 1 << 6, +}; + +enum cursor_movement { CURSOR_SAVE, CURSOR_LOAD }; + +enum cursor_state { + CURSOR_DEFAULT = 0, + CURSOR_WRAPNEXT = 1, + CURSOR_ORIGIN = 2 +}; + +enum charset { + CS_GRAPHIC0, + CS_GRAPHIC1, + CS_UK, + CS_USA, + CS_MULTI, + CS_GER, + CS_FIN +}; + +enum escape_state { + ESC_START = 1, + ESC_CSI = 2, + ESC_STR = 4, /* DCS, OSC, PM, APC */ + ESC_ALTCHARSET = 8, + ESC_STR_END = 16, /* a final string was encountered */ + ESC_TEST = 32, /* Enter in test mode */ + ESC_UTF8 = 64, +}; + +typedef struct { + Glyph attr; /* current char attributes */ + int x; + int y; + char state; +} TCursor; + +typedef struct { + int mode; + int type; + int snap; + /* + * Selection variables: + * nb – normalized coordinates of the beginning of the selection + * ne – normalized coordinates of the end of the selection + * ob – original coordinates of the beginning of the selection + * oe – original coordinates of the end of the selection + */ + struct { + int x, y; + } nb, ne, ob, oe; + + int alt; +} Selection; + +/* Internal representation of the screen */ +typedef struct { + int row; /* nb row */ + int col; /* nb col */ + Line *line; /* screen */ + Line *alt; /* alternate screen */ + int *dirty; /* dirtyness of lines */ + TCursor c; /* cursor */ + int ocx; /* old cursor col */ + int ocy; /* old cursor row */ + int top; /* top scroll limit */ + int bot; /* bottom scroll limit */ + int mode; /* terminal mode flags */ + int esc; /* escape state flags */ + char trantbl[4]; /* charset table translation */ + int charset; /* current charset */ + int icharset; /* selected charset for sequence */ + int *tabs; + Rune lastc; /* last printed char outside of sequence, 0 if control */ +} Term; + +/* CSI Escape sequence structs */ +/* ESC '[' [[ [] [;]] []] */ +typedef struct { + char buf[ESC_BUF_SIZ]; /* raw string */ + size_t len; /* raw string length */ + char priv; + int arg[ESC_ARG_SIZ]; + int narg; /* nb of args */ + char mode[2]; +} CSIEscape; + +/* STR Escape sequence structs */ +/* ESC type [[ [] [;]] ] ESC '\' */ +typedef struct { + char type; /* ESC type ... */ + char *buf; /* allocated raw string */ + size_t siz; /* allocation size */ + size_t len; /* raw string length */ + char *args[STR_ARG_SIZ]; + int narg; /* nb of args */ +} STREscape; + +static void execsh(char *, char **); +static void stty(char **); +static void sigchld(int); +static void ttywriteraw(const char *, size_t); + +static void csidump(void); +static void csihandle(void); +static void csiparse(void); +static void csireset(void); +static void osc_color_response(int, int, int); +static int eschandle(uchar); +static void strdump(void); +static void strhandle(void); +static void strparse(void); +static void strreset(void); + +static void tprinter(char *, size_t); +static void tdumpsel(void); +static void tdumpline(int); +static void tdump(void); +static void tclearregion(int, int, int, int); +static void tcursor(int); +static void tdeletechar(int); +static void tdeleteline(int); +static void tinsertblank(int); +static void tinsertblankline(int); +static int tlinelen(int); +static void tmoveto(int, int); +static void tmoveato(int, int); +static void tnewline(int); +static void tputtab(int); +static void tputc(Rune); +static void treset(void); +static void tscrollup(int, int); +static void tscrolldown(int, int); +static void tsetattr(const int *, int); +static void tsetchar(Rune, const Glyph *, int, int); +static void tsetdirt(int, int); +static void tsetscroll(int, int); +static void tswapscreen(void); +static void tsetmode(int, int, const int *, int); +static int twrite(const char *, int, int); +static void tfulldirt(void); +static void tcontrolcode(uchar); +static void tdectest(char); +static void tdefutf8(char); +static int32_t tdefcolor(const int *, int *, int); +static void tdeftran(char); +static void tstrsequence(uchar); + +static void drawregion(int, int, int, int); + +static void selnormalize(void); +static void selscroll(int, int); +static void selsnap(int *, int *, int); + +static size_t utf8decode(const char *, Rune *, size_t); +static Rune utf8decodebyte(char, size_t *); +static char utf8encodebyte(Rune, size_t); +static size_t utf8validate(Rune *, size_t); + +static char *base64dec(const char *); +static char base64dec_getc(const char **); + +static ssize_t xwrite(int, const char *, size_t); + +/* Globals */ +static Term term; +static Selection sel; +static CSIEscape csiescseq; +static STREscape strescseq; +static int iofd = 1; +static int cmdfd; +static pid_t pid; + +static const uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; +static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; +static const Rune utfmin[UTF_SIZ + 1] = {0, 0, 0x80, 0x800, 0x10000}; +static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, + 0x10FFFF}; + +ssize_t xwrite(int fd, const char *s, size_t len) { + size_t aux = len; + ssize_t r; + + while (len > 0) { + r = write(fd, s, len); + if (r < 0) + return r; + len -= r; + s += r; + } + + return aux; +} + +void *xmalloc(size_t len) { + void *p; + + if (!(p = malloc(len))) + die("malloc: %s\n", strerror(errno)); + + return p; +} + +void *xrealloc(void *p, size_t len) { + if ((p = realloc(p, len)) == NULL) + die("realloc: %s\n", strerror(errno)); + + return p; +} + +char *xstrdup(const char *s) { + char *p; + + if ((p = strdup(s)) == NULL) + die("strdup: %s\n", strerror(errno)); + + return p; +} + +size_t utf8decode(const char *c, Rune *u, size_t clen) { + size_t i, j, len, type; + Rune udecoded; + + *u = UTF_INVALID; + if (!clen) + return 0; + udecoded = utf8decodebyte(c[0], &len); + if (!BETWEEN(len, 1, UTF_SIZ)) + return 1; + for (i = 1, j = 1; i < clen && j < len; ++i, ++j) { + udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type); + if (type != 0) + return j; + } + if (j < len) + return 0; + *u = udecoded; + utf8validate(u, len); + + return len; +} + +Rune utf8decodebyte(char c, size_t *i) { + for (*i = 0; *i < LEN(utfmask); ++(*i)) + if (((uchar)c & utfmask[*i]) == utfbyte[*i]) + return (uchar)c & ~utfmask[*i]; + + return 0; +} + +size_t utf8encode(Rune u, char *c) { + size_t len, i; + + len = utf8validate(&u, 0); + if (len > UTF_SIZ) + return 0; + + for (i = len - 1; i != 0; --i) { + c[i] = utf8encodebyte(u, 0); + u >>= 6; + } + c[0] = utf8encodebyte(u, len); + + return len; +} + +char utf8encodebyte(Rune u, size_t i) { + return utfbyte[i] | (u & ~utfmask[i]); +} + +size_t utf8validate(Rune *u, size_t i) { + if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF)) + *u = UTF_INVALID; + for (i = 1; *u > utfmax[i]; ++i) + ; + + return i; +} + +char base64dec_getc(const char **src) { + while (**src && !isprint((unsigned char)**src)) + (*src)++; + return **src ? *((*src)++) : '='; /* emulate padding if string ends */ +} + +char *base64dec(const char *src) { + size_t in_len = strlen(src); + char *result, *dst; + static const char base64_digits[256] = { + [43] = 62, 0, 0, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, + 0, 0, -1, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, + 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, + 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51}; + + if (in_len % 4) + in_len += 4 - (in_len % 4); + result = dst = xmalloc(in_len / 4 * 3 + 1); + while (*src) { + int a = base64_digits[(unsigned char)base64dec_getc(&src)]; + int b = base64_digits[(unsigned char)base64dec_getc(&src)]; + int c = base64_digits[(unsigned char)base64dec_getc(&src)]; + int d = base64_digits[(unsigned char)base64dec_getc(&src)]; + + /* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */ + if (a == -1 || b == -1) + break; + + *dst++ = (a << 2) | ((b & 0x30) >> 4); + if (c == -1) + break; + *dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2); + if (d == -1) + break; + *dst++ = ((c & 0x03) << 6) | d; + } + *dst = '\0'; + return result; +} + +void selinit(void) { + sel.mode = SEL_IDLE; + sel.snap = 0; + sel.ob.x = -1; +} + +int tlinelen(int y) { + int i = term.col; + + if (term.line[y][i - 1].mode & ATTR_WRAP) + return i; + + while (i > 0 && term.line[y][i - 1].u == ' ') + --i; + + return i; +} + +void selstart(int col, int row, int snap) { + selclear(); + sel.mode = SEL_EMPTY; + sel.type = SEL_REGULAR; + sel.alt = IS_SET(MODE_ALTSCREEN); + sel.snap = snap; + sel.oe.x = sel.ob.x = col; + sel.oe.y = sel.ob.y = row; + selnormalize(); + + if (sel.snap != 0) + sel.mode = SEL_READY; + tsetdirt(sel.nb.y, sel.ne.y); +} + +void selextend(int col, int row, int type, int done) { + int oldey, oldex, oldsby, oldsey, oldtype; + + if (sel.mode == SEL_IDLE) + return; + if (done && sel.mode == SEL_EMPTY) { + selclear(); + return; + } + + oldey = sel.oe.y; + oldex = sel.oe.x; + oldsby = sel.nb.y; + oldsey = sel.ne.y; + oldtype = sel.type; + + sel.oe.x = col; + sel.oe.y = row; + selnormalize(); + sel.type = type; + + if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || + sel.mode == SEL_EMPTY) + tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey)); + + sel.mode = done ? SEL_IDLE : SEL_READY; +} + +void selnormalize(void) { + int i; + + if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) { + sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x; + sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x; + } else { + sel.nb.x = MIN(sel.ob.x, sel.oe.x); + sel.ne.x = MAX(sel.ob.x, sel.oe.x); + } + sel.nb.y = MIN(sel.ob.y, sel.oe.y); + sel.ne.y = MAX(sel.ob.y, sel.oe.y); + + selsnap(&sel.nb.x, &sel.nb.y, -1); + selsnap(&sel.ne.x, &sel.ne.y, +1); + + /* expand selection over line breaks */ + if (sel.type == SEL_RECTANGULAR) + return; + i = tlinelen(sel.nb.y); + if (i < sel.nb.x) + sel.nb.x = i; + if (tlinelen(sel.ne.y) <= sel.ne.x) + sel.ne.x = term.col - 1; +} + +int selected(int x, int y) { + if (sel.mode == SEL_EMPTY || sel.ob.x == -1 || + sel.alt != IS_SET(MODE_ALTSCREEN)) + return 0; + + if (sel.type == SEL_RECTANGULAR) + return BETWEEN(y, sel.nb.y, sel.ne.y) && BETWEEN(x, sel.nb.x, sel.ne.x); + + return BETWEEN(y, sel.nb.y, sel.ne.y) && (y != sel.nb.y || x >= sel.nb.x) && + (y != sel.ne.y || x <= sel.ne.x); +} + +void selsnap(int *x, int *y, int direction) { + int newx, newy, xt, yt; + int delim, prevdelim; + const Glyph *gp, *prevgp; + + switch (sel.snap) { + case SNAP_WORD: + /* + * Snap around if the word wraps around at the end or + * beginning of a line. + */ + prevgp = &term.line[*y][*x]; + prevdelim = ISDELIM(prevgp->u); + for (;;) { + newx = *x + direction; + newy = *y; + if (!BETWEEN(newx, 0, term.col - 1)) { + newy += direction; + newx = (newx + term.col) % term.col; + if (!BETWEEN(newy, 0, term.row - 1)) + break; + + if (direction > 0) + yt = *y, xt = *x; + else + yt = newy, xt = newx; + if (!(term.line[yt][xt].mode & ATTR_WRAP)) + break; + } + + if (newx >= tlinelen(newy)) + break; + + gp = &term.line[newy][newx]; + delim = ISDELIM(gp->u); + if (!(gp->mode & ATTR_WDUMMY) && + (delim != prevdelim || (delim && gp->u != prevgp->u))) + break; + + *x = newx; + *y = newy; + prevgp = gp; + prevdelim = delim; + } + break; + case SNAP_LINE: + /* + * Snap around if the the previous line or the current one + * has set ATTR_WRAP at its end. Then the whole next or + * previous line will be selected. + */ + *x = (direction < 0) ? 0 : term.col - 1; + if (direction < 0) { + for (; *y > 0; *y += direction) { + if (!(term.line[*y - 1][term.col - 1].mode & ATTR_WRAP)) { + break; + } + } + } else if (direction > 0) { + for (; *y < term.row - 1; *y += direction) { + if (!(term.line[*y][term.col - 1].mode & ATTR_WRAP)) { + break; + } + } + } + break; + } +} + +char *getsel(void) { + char *str, *ptr; + int y, bufsize, lastx, linelen; + const Glyph *gp, *last; + + if (sel.ob.x == -1) + return NULL; + + bufsize = (term.col + 1) * (sel.ne.y - sel.nb.y + 1) * UTF_SIZ; + ptr = str = xmalloc(bufsize); + + /* append every set & selected glyph to the selection */ + for (y = sel.nb.y; y <= sel.ne.y; y++) { + if ((linelen = tlinelen(y)) == 0) { + *ptr++ = '\n'; + continue; + } + + if (sel.type == SEL_RECTANGULAR) { + gp = &term.line[y][sel.nb.x]; + lastx = sel.ne.x; + } else { + gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0]; + lastx = (sel.ne.y == y) ? sel.ne.x : term.col - 1; + } + last = &term.line[y][MIN(lastx, linelen - 1)]; + while (last >= gp && last->u == ' ') + --last; + + for (; gp <= last; ++gp) { + if (gp->mode & ATTR_WDUMMY) + continue; + + ptr += utf8encode(gp->u, ptr); + } + + /* + * Copy and pasting of line endings is inconsistent + * in the inconsistent terminal and GUI world. + * The best solution seems like to produce '\n' when + * something is copied from st and convert '\n' to + * '\r', when something to be pasted is received by + * st. + * FIXME: Fix the computer world. + */ + if ((y < sel.ne.y || lastx >= linelen) && + (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR)) + *ptr++ = '\n'; + } + *ptr = 0; + return str; +} + +void selclear(void) { + if (sel.ob.x == -1) + return; + sel.mode = SEL_IDLE; + sel.ob.x = -1; + tsetdirt(sel.nb.y, sel.ne.y); +} + +void die(const char *errstr, ...) { + va_list ap; + + va_start(ap, errstr); + vfprintf(stderr, errstr, ap); + va_end(ap); + exit(1); +} + +void execsh(char *cmd, char **args) { + char *sh, *prog, *arg; + const struct passwd *pw; + + errno = 0; + if ((pw = getpwuid(getuid())) == NULL) { + if (errno) + die("getpwuid: %s\n", strerror(errno)); + else + die("who are you?\n"); + } + + if ((sh = getenv("SHELL")) == NULL) + sh = (pw->pw_shell[0]) ? ((char *)pw->pw_shell) : cmd; + + if (args) { + prog = args[0]; + arg = NULL; + } else if (scroll) { + prog = scroll; + arg = utmp ? utmp : sh; + } else if (utmp) { + prog = utmp; + arg = NULL; + } else { + prog = sh; + arg = NULL; + } + DEFAULT(args, ((char *[]){prog, arg, NULL})); + + unsetenv("COLUMNS"); + unsetenv("LINES"); + unsetenv("TERMCAP"); + 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); + + signal(SIGCHLD, SIG_DFL); + signal(SIGHUP, SIG_DFL); + signal(SIGINT, SIG_DFL); + signal(SIGQUIT, SIG_DFL); + signal(SIGTERM, SIG_DFL); + signal(SIGALRM, SIG_DFL); + + execvp(prog, args); + _exit(1); +} + +void sigchld(int a) { + int stat; + pid_t p; + + if ((p = waitpid(pid, &stat, WNOHANG)) < 0) + die("waiting for pid %hd failed: %s\n", pid, strerror(errno)); + + if (pid != p) + return; + + if (WIFEXITED(stat) && WEXITSTATUS(stat)) + die("child exited with status %d\n", WEXITSTATUS(stat)); + else if (WIFSIGNALED(stat)) + die("child terminated due to signal %d\n", WTERMSIG(stat)); + _exit(0); +} + +void stty(char **args) { + char cmd[_POSIX_ARG_MAX], **p, *q, *s; + size_t n, siz; + + if ((n = strlen(stty_args)) > sizeof(cmd) - 1) + die("incorrect stty parameters\n"); + memcpy(cmd, stty_args, n); + q = cmd + n; + siz = sizeof(cmd) - n; + for (p = args; p && (s = *p); ++p) { + if ((n = strlen(s)) > siz - 1) + die("stty parameter length too long\n"); + *q++ = ' '; + memcpy(q, s, n); + q += n; + siz -= n + 1; + } + *q = '\0'; + if (system(cmd) != 0) + perror("Couldn't call stty"); +} + +int ttynew(const char *line, char *cmd, const char *out, char **args) { + int m, s; + + if (out) { + term.mode |= MODE_PRINT; + iofd = (!strcmp(out, "-")) ? 1 : open(out, O_WRONLY | O_CREAT, 0666); + if (iofd < 0) { + fprintf(stderr, "Error opening %s:%s\n", out, strerror(errno)); + } + } + + if (line) { + if ((cmdfd = open(line, O_RDWR)) < 0) + die("open line '%s' failed: %s\n", line, strerror(errno)); + dup2(cmdfd, 0); + stty(args); + return cmdfd; + } + + /* seems to work fine on linux, openbsd and freebsd */ + if (openpty(&m, &s, NULL, NULL, NULL) < 0) + die("openpty failed: %s\n", strerror(errno)); + + switch (pid = fork()) { + case -1: + die("fork failed: %s\n", strerror(errno)); + break; + case 0: + close(iofd); + close(m); + setsid(); /* create a new process group */ + dup2(s, 0); + dup2(s, 1); + dup2(s, 2); + if (ioctl(s, TIOCSCTTY, NULL) < 0) + die("ioctl TIOCSCTTY failed: %s\n", strerror(errno)); + if (s > 2) + close(s); +#ifdef __OpenBSD__ + if (pledge("stdio getpw proc exec", NULL) == -1) + die("pledge\n"); +#endif + execsh(cmd, args); + break; + default: +#ifdef __OpenBSD__ + if (pledge("stdio rpath tty proc", NULL) == -1) + die("pledge\n"); +#endif + close(s); + cmdfd = m; + signal(SIGCHLD, sigchld); + break; + } + return cmdfd; +} + +size_t ttyread(void) { + static char buf[BUFSIZ]; + static int buflen = 0; + int ret, written; + + /* append read bytes to unprocessed bytes */ + ret = read(cmdfd, buf + buflen, LEN(buf) - buflen); + + switch (ret) { + case 0: + exit(0); + case -1: + die("couldn't read from shell: %s\n", strerror(errno)); + default: + buflen += ret; + written = twrite(buf, buflen, 0); + buflen -= written; + /* keep any incomplete UTF-8 byte sequence for the next call */ + if (buflen > 0) + memmove(buf, buf + written, buflen); + return ret; + } +} + +void ttywrite(const char *s, size_t n, int may_echo) { + const char *next; + + if (may_echo && IS_SET(MODE_ECHO)) + twrite(s, n, 1); + + if (!IS_SET(MODE_CRLF)) { + ttywriteraw(s, n); + return; + } + + /* This is similar to how the kernel handles ONLCR for ttys */ + while (n > 0) { + if (*s == '\r') { + next = s + 1; + ttywriteraw("\r\n", 2); + } else { + next = memchr(s, '\r', n); + DEFAULT(next, s + n); + ttywriteraw(s, next - s); + } + n -= next - s; + s = next; + } +} + +void ttywriteraw(const char *s, size_t n) { + fd_set wfd, rfd; + ssize_t r; + size_t lim = 256; + + /* + * Remember that we are using a pty, which might be a modem line. + * Writing too much will clog the line. That's why we are doing this + * dance. + * FIXME: Migrate the world to Plan 9. + */ + while (n > 0) { + FD_ZERO(&wfd); + FD_ZERO(&rfd); + FD_SET(cmdfd, &wfd); + FD_SET(cmdfd, &rfd); + + /* Check if we can write. */ + if (pselect(cmdfd + 1, &rfd, &wfd, NULL, NULL, NULL) < 0) { + if (errno == EINTR) + continue; + die("select failed: %s\n", strerror(errno)); + } + if (FD_ISSET(cmdfd, &wfd)) { + /* + * Only write the bytes written by ttywrite() or the + * default of 256. This seems to be a reasonable value + * for a serial line. Bigger values might clog the I/O. + */ + if ((r = write(cmdfd, s, (n < lim) ? n : lim)) < 0) + goto write_error; + if (r < (ssize_t)n) { + /* + * We weren't able to write out everything. + * This means the buffer is getting full + * again. Empty it. + */ + if (n < lim) + lim = ttyread(); + n -= r; + s += r; + } else { + /* All bytes have been written. */ + break; + } + } + if (FD_ISSET(cmdfd, &rfd)) + lim = ttyread(); + } + return; + +write_error: + die("write error on tty: %s\n", strerror(errno)); +} + +void ttyresize(int tw, int th) { + struct winsize w; + + w.ws_row = term.row; + w.ws_col = term.col; + w.ws_xpixel = tw; + w.ws_ypixel = th; + if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0) + fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno)); +} + +void ttyhangup(void) { + /* Send SIGHUP to shell */ + kill(pid, SIGHUP); +} + +int tattrset(int attr) { + int i, j; + + for (i = 0; i < term.row - 1; i++) { + for (j = 0; j < term.col - 1; j++) { + if (term.line[i][j].mode & attr) + return 1; + } + } + + return 0; +} + +void tsetdirt(int top, int bot) { + int i; + + LIMIT(top, 0, term.row - 1); + LIMIT(bot, 0, term.row - 1); + + for (i = top; i <= bot; i++) + term.dirty[i] = 1; +} + +void tsetdirtattr(int attr) { + int i, j; + + for (i = 0; i < term.row - 1; i++) { + for (j = 0; j < term.col - 1; j++) { + if (term.line[i][j].mode & attr) { + tsetdirt(i, i); + break; + } + } + } +} + +void tfulldirt(void) { + tsetdirt(0, term.row - 1); +} + +void tcursor(int mode) { + static TCursor c[2]; + int alt = IS_SET(MODE_ALTSCREEN); + + if (mode == CURSOR_SAVE) { + c[alt] = term.c; + } else if (mode == CURSOR_LOAD) { + term.c = c[alt]; + tmoveto(c[alt].x, c[alt].y); + } +} + +void treset(void) { + uint i; + + term.c = (TCursor){{.mode = ATTR_NULL, .fg = defaultfg, .bg = defaultbg}, + .x = 0, + .y = 0, + .state = CURSOR_DEFAULT}; + + memset(term.tabs, 0, term.col * sizeof(*term.tabs)); + for (i = tabspaces; i < (uint)term.col; i += tabspaces) + term.tabs[i] = 1; + term.top = 0; + term.bot = term.row - 1; + term.mode = MODE_WRAP | MODE_UTF8; + memset(term.trantbl, CS_USA, sizeof(term.trantbl)); + term.charset = 0; + + for (i = 0; i < 2; i++) { + tmoveto(0, 0); + tcursor(CURSOR_SAVE); + tclearregion(0, 0, term.col - 1, term.row - 1); + tswapscreen(); + } +} + +void tnew(int col, int row) { + term = (Term){.c = {.attr = {.fg = defaultfg, .bg = defaultbg}}}; + tresize(col, row); + treset(); +} + +void tswapscreen(void) { + Line *tmp = term.line; + + term.line = term.alt; + term.alt = tmp; + term.mode ^= MODE_ALTSCREEN; + tfulldirt(); +} + +void tscrolldown(int orig, int n) { + int i; + Line temp; + + LIMIT(n, 0, term.bot - orig + 1); + + tsetdirt(orig, term.bot - n); + tclearregion(0, term.bot - n + 1, term.col - 1, term.bot); + + for (i = term.bot; i >= orig + n; i--) { + temp = term.line[i]; + term.line[i] = term.line[i - n]; + term.line[i - n] = temp; + } + + selscroll(orig, n); +} + +void tscrollup(int orig, int n) { + int i; + Line temp; + + LIMIT(n, 0, term.bot - orig + 1); + + tclearregion(0, orig, term.col - 1, orig + n - 1); + tsetdirt(orig + n, term.bot); + + for (i = orig; i <= term.bot - n; i++) { + temp = term.line[i]; + term.line[i] = term.line[i + n]; + term.line[i + n] = temp; + } + + selscroll(orig, -n); +} + +void selscroll(int orig, int n) { + if (sel.ob.x == -1) + return; + + if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) { + selclear(); + } else if (BETWEEN(sel.nb.y, orig, term.bot)) { + sel.ob.y += n; + sel.oe.y += n; + if (sel.ob.y < term.top || sel.ob.y > term.bot || sel.oe.y < term.top || + sel.oe.y > term.bot) { + selclear(); + } else { + selnormalize(); + } + } +} + +void tnewline(int first_col) { + int y = term.c.y; + + if (y == term.bot) { + tscrollup(term.top, 1); + } else { + y++; + } + tmoveto(first_col ? 0 : term.c.x, y); +} + +void csiparse(void) { + char *p = csiescseq.buf, *np; + long int v; + + csiescseq.narg = 0; + if (*p == '?') { + csiescseq.priv = 1; + p++; + } + + csiescseq.buf[csiescseq.len] = '\0'; + while (p < csiescseq.buf + csiescseq.len) { + np = NULL; + v = strtol(p, &np, 10); + if (np == p) + v = 0; + if (v == LONG_MAX || v == LONG_MIN) + v = -1; + csiescseq.arg[csiescseq.narg++] = v; + p = np; + if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ) + break; + p++; + } + csiescseq.mode[0] = *p++; + csiescseq.mode[1] = (p < csiescseq.buf + csiescseq.len) ? *p : '\0'; +} + +/* for absolute user moves, when decom is set */ +void tmoveato(int x, int y) { + tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top : 0)); +} + +void tmoveto(int x, int y) { + int miny, maxy; + + if (term.c.state & CURSOR_ORIGIN) { + miny = term.top; + maxy = term.bot; + } else { + miny = 0; + maxy = term.row - 1; + } + term.c.state &= ~CURSOR_WRAPNEXT; + term.c.x = LIMIT(x, 0, term.col - 1); + term.c.y = LIMIT(y, miny, maxy); +} + +void tsetchar(Rune u, const Glyph *attr, int x, int y) { + static const char *vt100_0[62] = { + /* 0x41 - 0x7e */ + "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */ + 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */ + 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */ + 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */ + "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */ + "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */ + "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */ + "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */ + }; + + /* + * The table is proudly stolen from rxvt. + */ + if (term.trantbl[term.charset] == CS_GRAPHIC0 && BETWEEN(u, 0x41, 0x7e) && + vt100_0[u - 0x41]) + utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ); + + if (term.line[y][x].mode & ATTR_WIDE) { + if (x + 1 < term.col) { + term.line[y][x + 1].u = ' '; + term.line[y][x + 1].mode &= ~ATTR_WDUMMY; + } + } else if (term.line[y][x].mode & ATTR_WDUMMY) { + term.line[y][x - 1].u = ' '; + term.line[y][x - 1].mode &= ~ATTR_WIDE; + } + + term.dirty[y] = 1; + term.line[y][x] = *attr; + term.line[y][x].u = u; +} + +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; + if (y1 > y2) + temp = y1, y1 = y2, y2 = temp; + + LIMIT(x1, 0, term.col - 1); + LIMIT(x2, 0, term.col - 1); + LIMIT(y1, 0, term.row - 1); + LIMIT(y2, 0, term.row - 1); + + 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(); + gp->fg = term.c.attr.fg; + gp->bg = term.c.attr.bg; + gp->mode = 0; + gp->u = ' '; + } + } +} + +void tdeletechar(int n) { + int dst, src, size; + Glyph *line; + + LIMIT(n, 0, term.col - term.c.x); + + dst = term.c.x; + src = term.c.x + n; + size = term.col - src; + line = term.line[term.c.y]; + + memmove(&line[dst], &line[src], size * sizeof(Glyph)); + tclearregion(term.col - n, term.c.y, term.col - 1, term.c.y); +} + +void tinsertblank(int n) { + int dst, src, size; + Glyph *line; + + LIMIT(n, 0, term.col - term.c.x); + + dst = term.c.x + n; + src = term.c.x; + size = term.col - dst; + line = term.line[term.c.y]; + + memmove(&line[dst], &line[src], size * sizeof(Glyph)); + tclearregion(src, term.c.y, dst - 1, term.c.y); +} + +void tinsertblankline(int n) { + if (BETWEEN(term.c.y, term.top, term.bot)) + tscrolldown(term.c.y, n); +} + +void tdeleteline(int n) { + if (BETWEEN(term.c.y, term.top, term.bot)) + tscrollup(term.c.y, n); +} + +int32_t tdefcolor(const int *attr, int *npar, int l) { + int32_t idx = -1; + uint r, g, b; + + switch (attr[*npar + 1]) { + case 2: /* direct color in RGB space */ + if (*npar + 4 >= l) { + fprintf(stderr, "erresc(38): Incorrect number of parameters (%d)\n", + *npar); + break; + } + r = attr[*npar + 2]; + g = attr[*npar + 3]; + b = attr[*npar + 4]; + *npar += 4; + if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255)) + fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n", r, g, b); + else + idx = TRUECOLOR(r, g, b); + break; + case 5: /* indexed color */ + if (*npar + 2 >= l) { + fprintf(stderr, "erresc(38): Incorrect number of parameters (%d)\n", + *npar); + break; + } + *npar += 2; + if (!BETWEEN(attr[*npar], 0, 255)) + fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]); + else + idx = attr[*npar]; + break; + case 0: /* implemented defined (only foreground) */ + case 1: /* transparent */ + case 3: /* direct color in CMY space */ + case 4: /* direct color in CMYK space */ + default: + fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[*npar]); + break; + } + + return idx; +} + +void tsetattr(const int *attr, int l) { + int i; + int32_t idx; + + for (i = 0; i < l; i++) { + switch (attr[i]) { + case 0: + term.c.attr.mode &= + ~(ATTR_BOLD | ATTR_FAINT | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_BLINK | + ATTR_REVERSE | ATTR_INVISIBLE | ATTR_STRUCK); + term.c.attr.fg = defaultfg; + term.c.attr.bg = defaultbg; + break; + case 1: + term.c.attr.mode |= ATTR_BOLD; + break; + case 2: + term.c.attr.mode |= ATTR_FAINT; + break; + case 3: + term.c.attr.mode |= ATTR_ITALIC; + break; + case 4: + term.c.attr.mode |= ATTR_UNDERLINE; + break; + case 5: /* slow blink */ + /* FALLTHROUGH */ + case 6: /* rapid blink */ + term.c.attr.mode |= ATTR_BLINK; + break; + case 7: + term.c.attr.mode |= ATTR_REVERSE; + break; + case 8: + term.c.attr.mode |= ATTR_INVISIBLE; + break; + case 9: + term.c.attr.mode |= ATTR_STRUCK; + break; + case 22: + term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT); + break; + case 23: + term.c.attr.mode &= ~ATTR_ITALIC; + break; + case 24: + term.c.attr.mode &= ~ATTR_UNDERLINE; + break; + case 25: + term.c.attr.mode &= ~ATTR_BLINK; + break; + case 27: + term.c.attr.mode &= ~ATTR_REVERSE; + break; + case 28: + term.c.attr.mode &= ~ATTR_INVISIBLE; + break; + case 29: + term.c.attr.mode &= ~ATTR_STRUCK; + break; + case 38: + if ((idx = tdefcolor(attr, &i, l)) >= 0) + term.c.attr.fg = idx; + break; + case 39: + term.c.attr.fg = defaultfg; + break; + case 48: + if ((idx = tdefcolor(attr, &i, l)) >= 0) + term.c.attr.bg = idx; + break; + case 49: + term.c.attr.bg = 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; + } else if (BETWEEN(attr[i], 90, 97)) { + term.c.attr.fg = attr[i] - 90 + 8; + } else if (BETWEEN(attr[i], 100, 107)) { + term.c.attr.bg = attr[i] - 100 + 8; + } else { + fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]); + csidump(); + } + 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 tsetmode(int priv, int set, const int *args, int narg) { + int alt; + const int *lim; + + for (lim = args + narg; args < lim; ++args) { + if (priv) { + switch (*args) { + case 1: /* DECCKM -- Cursor key */ + xsetmode(set, MODE_APPCURSOR); + break; + case 5: /* DECSCNM -- Reverse video */ + xsetmode(set, MODE_REVERSE); + break; + case 6: /* DECOM -- Origin */ + MODBIT(term.c.state, set, CURSOR_ORIGIN); + tmoveato(0, 0); + break; + case 7: /* DECAWM -- Auto wrap */ + MODBIT(term.mode, set, MODE_WRAP); + break; + case 0: /* Error (IGNORED) */ + case 2: /* DECANM -- ANSI/VT52 (IGNORED) */ + case 3: /* DECCOLM -- Column (IGNORED) */ + case 4: /* DECSCLM -- Scroll (IGNORED) */ + case 8: /* DECARM -- Auto repeat (IGNORED) */ + case 18: /* DECPFF -- Printer feed (IGNORED) */ + case 19: /* DECPEX -- Printer extent (IGNORED) */ + case 42: /* DECNRCM -- National characters (IGNORED) */ + case 12: /* att610 -- Start blinking cursor (IGNORED) */ + break; + case 25: /* DECTCEM -- Text Cursor Enable Mode */ + xsetmode(!set, MODE_HIDE); + break; + case 9: /* X10 mouse compatibility mode */ + xsetpointermotion(0); + xsetmode(0, MODE_MOUSE); + xsetmode(set, MODE_MOUSEX10); + break; + case 1000: /* 1000: report button press */ + xsetpointermotion(0); + xsetmode(0, MODE_MOUSE); + xsetmode(set, MODE_MOUSEBTN); + break; + case 1002: /* 1002: report motion on button press */ + xsetpointermotion(0); + xsetmode(0, MODE_MOUSE); + xsetmode(set, MODE_MOUSEMOTION); + break; + case 1003: /* 1003: enable all mouse motions */ + xsetpointermotion(set); + xsetmode(0, MODE_MOUSE); + xsetmode(set, MODE_MOUSEMANY); + break; + case 1004: /* 1004: send focus events to tty */ + xsetmode(set, MODE_FOCUS); + break; + case 1006: /* 1006: extended reporting mode */ + xsetmode(set, MODE_MOUSESGR); + break; + case 1034: + xsetmode(set, MODE_8BIT); + break; + case 1049: /* swap screen & set/restore cursor as xterm */ + if (!allowaltscreen) + break; + tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); + /* FALLTHROUGH */ + case 47: /* swap screen */ + case 1047: + if (!allowaltscreen) + break; + alt = IS_SET(MODE_ALTSCREEN); + if (alt) { + tclearregion(0, 0, term.col - 1, term.row - 1); + } + if (set ^ alt) /* set is always 1 or 0 */ + tswapscreen(); + if (*args != 1049) + break; + /* FALLTHROUGH */ + case 1048: + tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); + break; + case 2004: /* 2004: bracketed paste mode */ + xsetmode(set, MODE_BRCKTPASTE); + break; + /* Not implemented mouse modes. See comments there. */ + case 1001: /* mouse highlight mode; can hang the + terminal by design when implemented. */ + case 1005: /* UTF-8 mouse mode; will confuse + applications not supporting UTF-8 + and luit. */ + case 1015: /* urxvt mangled mouse mode; incompatible + and can be mistaken for other control + codes. */ + break; + default: + fprintf(stderr, "erresc: unknown private set/reset mode %d\n", *args); + break; + } + } else { + switch (*args) { + case 0: /* Error (IGNORED) */ + break; + case 2: + xsetmode(set, MODE_KBDLOCK); + break; + case 4: /* IRM -- Insertion-replacement */ + MODBIT(term.mode, set, MODE_INSERT); + break; + case 12: /* SRM -- Send/Receive */ + MODBIT(term.mode, !set, MODE_ECHO); + break; + case 20: /* LNM -- Linefeed/new line */ + MODBIT(term.mode, set, MODE_CRLF); + break; + default: + fprintf(stderr, "erresc: unknown set/reset mode %d\n", *args); + break; + } + } + } +} + +void csihandle(void) { + char buf[40]; + int len; + + switch (csiescseq.mode[0]) { + default: + unknown: + fprintf(stderr, "erresc: unknown csi "); + csidump(); + /* die(""); */ + break; + case '@': /* ICH -- Insert blank char */ + DEFAULT(csiescseq.arg[0], 1); + tinsertblank(csiescseq.arg[0]); + break; + case 'A': /* CUU -- Cursor Up */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x, term.c.y - csiescseq.arg[0]); + break; + case 'B': /* CUD -- Cursor Down */ + case 'e': /* VPR --Cursor Down */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x, term.c.y + csiescseq.arg[0]); + break; + case 'i': /* MC -- Media Copy */ + switch (csiescseq.arg[0]) { + case 0: + tdump(); + break; + case 1: + tdumpline(term.c.y); + break; + case 2: + tdumpsel(); + break; + case 4: + term.mode &= ~MODE_PRINT; + break; + case 5: + term.mode |= MODE_PRINT; + break; + } + break; + case 'c': /* DA -- Device Attributes */ + if (csiescseq.arg[0] == 0) + ttywrite(vtiden, strlen(vtiden), 0); + break; + case 'b': /* REP -- if last char is printable print it more times */ + DEFAULT(csiescseq.arg[0], 1); + if (term.lastc) + while (csiescseq.arg[0]-- > 0) + tputc(term.lastc); + break; + case 'C': /* CUF -- Cursor Forward */ + case 'a': /* HPR -- Cursor Forward */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x + csiescseq.arg[0], term.c.y); + break; + case 'D': /* CUB -- Cursor Backward */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(term.c.x - csiescseq.arg[0], term.c.y); + break; + case 'E': /* CNL -- Cursor Down and first col */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(0, term.c.y + csiescseq.arg[0]); + break; + case 'F': /* CPL -- Cursor Up and first col */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(0, term.c.y - csiescseq.arg[0]); + break; + case 'g': /* TBC -- Tabulation clear */ + switch (csiescseq.arg[0]) { + case 0: /* clear current tab stop */ + term.tabs[term.c.x] = 0; + break; + case 3: /* clear all the tabs */ + memset(term.tabs, 0, term.col * sizeof(*term.tabs)); + break; + default: + goto unknown; + } + break; + case 'G': /* CHA -- Move to */ + case '`': /* HPA */ + DEFAULT(csiescseq.arg[0], 1); + tmoveto(csiescseq.arg[0] - 1, term.c.y); + break; + case 'H': /* CUP -- Move to */ + case 'f': /* HVP */ + DEFAULT(csiescseq.arg[0], 1); + DEFAULT(csiescseq.arg[1], 1); + tmoveato(csiescseq.arg[1] - 1, csiescseq.arg[0] - 1); + break; + case 'I': /* CHT -- Cursor Forward Tabulation tab stops */ + DEFAULT(csiescseq.arg[0], 1); + tputtab(csiescseq.arg[0]); + break; + case 'J': /* ED -- Clear screen */ + switch (csiescseq.arg[0]) { + case 0: /* below */ + tclearregion(term.c.x, term.c.y, term.col - 1, term.c.y); + if (term.c.y < term.row - 1) { + tclearregion(0, term.c.y + 1, term.col - 1, term.row - 1); + } + break; + case 1: /* above */ + if (term.c.y > 1) + tclearregion(0, 0, term.col - 1, term.c.y - 1); + tclearregion(0, term.c.y, term.c.x, term.c.y); + break; + case 2: /* all */ + tclearregion(0, 0, term.col - 1, term.row - 1); + break; + default: + goto unknown; + } + break; + case 'K': /* EL -- Clear line */ + switch (csiescseq.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 'S': /* SU -- Scroll line up */ + DEFAULT(csiescseq.arg[0], 1); + tscrollup(term.top, csiescseq.arg[0]); + break; + case 'T': /* SD -- Scroll line down */ + DEFAULT(csiescseq.arg[0], 1); + tscrolldown(term.top, csiescseq.arg[0]); + break; + case 'L': /* IL -- Insert blank lines */ + DEFAULT(csiescseq.arg[0], 1); + tinsertblankline(csiescseq.arg[0]); + break; + case 'l': /* RM -- Reset Mode */ + tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg); + break; + case 'M': /* DL -- Delete lines */ + DEFAULT(csiescseq.arg[0], 1); + tdeleteline(csiescseq.arg[0]); + break; + case 'X': /* ECH -- Erase char */ + DEFAULT(csiescseq.arg[0], 1); + tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0] - 1, + term.c.y); + break; + case 'P': /* DCH -- Delete char */ + DEFAULT(csiescseq.arg[0], 1); + tdeletechar(csiescseq.arg[0]); + break; + case 'Z': /* CBT -- Cursor Backward Tabulation tab stops */ + DEFAULT(csiescseq.arg[0], 1); + tputtab(-csiescseq.arg[0]); + break; + case 'd': /* VPA -- Move to */ + DEFAULT(csiescseq.arg[0], 1); + tmoveato(term.c.x, csiescseq.arg[0] - 1); + break; + case 'h': /* SM -- Set terminal mode */ + tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg); + break; + case 'm': /* SGR -- Terminal attribute (color) */ + tsetattr(csiescseq.arg, csiescseq.narg); + break; + case 'n': /* DSR – Device Status Report (cursor position) */ + if (csiescseq.arg[0] == 6) { + len = + snprintf(buf, sizeof(buf), "\033[%i;%iR", term.c.y + 1, term.c.x + 1); + ttywrite(buf, len, 0); + } + break; + case 'r': /* DECSTBM -- Set Scrolling Region */ + if (csiescseq.priv) { + goto unknown; + } else { + DEFAULT(csiescseq.arg[0], 1); + DEFAULT(csiescseq.arg[1], term.row); + tsetscroll(csiescseq.arg[0] - 1, csiescseq.arg[1] - 1); + tmoveato(0, 0); + } + break; + case 's': /* DECSC -- Save cursor position (ANSI.SYS) */ + tcursor(CURSOR_SAVE); + break; + case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */ + tcursor(CURSOR_LOAD); + break; + case ' ': + switch (csiescseq.mode[1]) { + case 'q': /* DECSCUSR -- Set Cursor Style */ + if (xsetcursor(csiescseq.arg[0])) + goto unknown; + break; + default: + goto unknown; + } + break; + } +} + +void csidump(void) { + size_t i; + uint c; + + fprintf(stderr, "ESC["); + for (i = 0; i < csiescseq.len; i++) { + c = csiescseq.buf[i] & 0xff; + if (isprint(c)) { + fputc(c, stderr); + } else if (c == '\n') { + fprintf(stderr, "(\\n)"); + } else if (c == '\r') { + fprintf(stderr, "(\\r)"); + } else if (c == 0x1b) { + fprintf(stderr, "(\\e)"); + } else { + fprintf(stderr, "(%02x)", c); + } + } + fputc('\n', stderr); +} + +void csireset(void) { + memset(&csiescseq, 0, sizeof(csiescseq)); +} + +void osc_color_response(int num, int index, int is_osc4) { + int n; + char buf[32]; + unsigned char r, g, b; + + if (xgetcolor(is_osc4 ? num : index, &r, &g, &b)) { + fprintf(stderr, "erresc: failed to fetch %s color %d\n", + is_osc4 ? "osc4" : "osc", is_osc4 ? num : index); + return; + } + + n = snprintf(buf, sizeof buf, "\033]%s%d;rgb:%02x%02x/%02x%02x/%02x%02x\007", + is_osc4 ? "4;" : "", num, r, r, g, g, b, b); + if (n < 0 || n >= (int)sizeof(buf)) { + fprintf(stderr, "error: %s while printing %s response\n", + n < 0 ? "snprintf failed" : "truncation occurred", + is_osc4 ? "osc4" : "osc"); + } else { + ttywrite(buf, n, 1); + } +} + +void strhandle(void) { + char *p = NULL, *dec; + int j, narg, par; + const struct { + int idx; + char *str; + } osc_table[] = {{defaultfg, "foreground"}, + {defaultbg, "background"}, + {defaultcs, "cursor"}}; + + term.esc &= ~(ESC_STR_END | ESC_STR); + strparse(); + par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0; + + switch (strescseq.type) { + case ']': /* OSC -- Operating System Command */ + switch (par) { + case 0: + if (narg > 1) { + xsettitle(strescseq.args[1]); + xseticontitle(strescseq.args[1]); + } + return; + case 1: + if (narg > 1) + xseticontitle(strescseq.args[1]); + return; + case 2: + if (narg > 1) + xsettitle(strescseq.args[1]); + return; + case 52: + if (narg > 2 && allowwindowops) { + dec = base64dec(strescseq.args[2]); + if (dec) { + xsetsel(dec); + xclipcopy(); + } else { + fprintf(stderr, "erresc: invalid base64\n"); + } + } + return; + case 10: + case 11: + case 12: + if (narg < 2) + break; + p = strescseq.args[1]; + if ((j = par - 10) < 0 || j >= (int)LEN(osc_table)) + break; /* shouldn't be possible */ + + if (!strcmp(p, "?")) { + osc_color_response(par, osc_table[j].idx, 0); + } else if (xsetcolorname(osc_table[j].idx, p)) { + fprintf(stderr, "erresc: invalid %s color: %s\n", osc_table[j].str, + p); + } else { + tfulldirt(); + } + return; + case 4: /* color set */ + if (narg < 3) + break; + p = strescseq.args[2]; + /* FALLTHROUGH */ + case 104: /* color reset */ + j = (narg > 1) ? atoi(strescseq.args[1]) : -1; + + if (p && !strcmp(p, "?")) { + osc_color_response(j, 0, 1); + } else if (xsetcolorname(j, p)) { + if (par == 104 && narg <= 1) + return; /* color reset without parameter */ + fprintf(stderr, "erresc: invalid color j=%d, p=%s\n", j, + p ? p : "(null)"); + } else { + /* + * TODO if defaultbg color is changed, borders + * are dirty + */ + tfulldirt(); + } + return; + } + break; + case 'k': /* old title set compatibility */ + xsettitle(strescseq.args[0]); + return; + case 'P': /* DCS -- Device Control String */ + case '_': /* APC -- Application Program Command */ + case '^': /* PM -- Privacy Message */ + return; + } + + fprintf(stderr, "erresc: unknown str "); + strdump(); +} + +void strparse(void) { + int c; + char *p = strescseq.buf; + + strescseq.narg = 0; + strescseq.buf[strescseq.len] = '\0'; + + if (*p == '\0') + return; + + while (strescseq.narg < STR_ARG_SIZ) { + strescseq.args[strescseq.narg++] = p; + while ((c = *p) != ';' && c != '\0') + ++p; + if (c == '\0') + return; + *p++ = '\0'; + } +} + +void strdump(void) { + size_t i; + uint c; + + fprintf(stderr, "ESC%c", strescseq.type); + for (i = 0; i < strescseq.len; i++) { + c = strescseq.buf[i] & 0xff; + if (c == '\0') { + fputc('\n', stderr); + return; + } else if (isprint(c)) { + fputc(c, stderr); + fprintf(stderr, "(\\n)"); + } else if (c == '\n') { + fprintf(stderr, "(\\n)"); + } else if (c == '\r') { + fprintf(stderr, "(\\r)"); + } else if (c == 0x1b) { + fprintf(stderr, "(\\e)"); + } else { + fprintf(stderr, "(%02x)", c); + } + } + fprintf(stderr, "ESC\\\n"); +} + +void strreset(void) { + strescseq = (STREscape){ + .buf = xrealloc(strescseq.buf, STR_BUF_SIZ), + .siz = STR_BUF_SIZ, + }; +} + +void tprinter(char *s, size_t len) { + if (iofd != -1 && xwrite(iofd, s, len) < 0) { + perror("Error writing to output file"); + close(iofd); + iofd = -1; + } +} + +void toggleprinter(const Arg *arg) { + term.mode ^= MODE_PRINT; +} + +void printscreen(const Arg *arg) { + tdump(); +} + +void printsel(const Arg *arg) { + tdumpsel(); +} + +void tdumpsel(void) { + char *ptr; + + if ((ptr = getsel())) { + tprinter(ptr, strlen(ptr)); + free(ptr); + } +} + +void tdumpline(int n) { + char buf[UTF_SIZ]; + const Glyph *bp, *end; + + bp = &term.line[n][0]; + end = &bp[MIN(tlinelen(n), term.col) - 1]; + if (bp != end || bp->u != ' ') { + for (; bp <= end; ++bp) + tprinter(buf, utf8encode(bp->u, buf)); + } + tprinter("\n", 1); +} + +void tdump(void) { + int i; + + for (i = 0; i < term.row; ++i) + tdumpline(i); +} + +void tputtab(int n) { + int x = term.c.x; + + if (n > 0) { + while (x < term.col && n--) + for (++x; x < term.col && !term.tabs[x]; ++x) + /* nothing */; + } else if (n < 0) { + while (x > 0 && n++) + for (--x; x > 0 && !term.tabs[x]; --x) + /* nothing */; + } + term.c.x = LIMIT(x, 0, term.col - 1); +} + +void tdefutf8(char ascii) { + if (ascii == 'G') + term.mode |= MODE_UTF8; + else if (ascii == '@') + term.mode &= ~MODE_UTF8; +} + +void tdeftran(char ascii) { + static char cs[] = "0B"; + static int vcs[] = {CS_GRAPHIC0, CS_USA}; + char *p; + + if ((p = strchr(cs, ascii)) == NULL) { + fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii); + } else { + term.trantbl[term.icharset] = vcs[p - cs]; + } +} + +void tdectest(char c) { + int x, y; + + if (c == '8') { /* DEC screen alignment test. */ + for (x = 0; x < term.col; ++x) { + for (y = 0; y < term.row; ++y) + tsetchar('E', &term.c.attr, x, y); + } + } +} + +void tstrsequence(uchar c) { + switch (c) { + case 0x90: /* DCS -- Device Control String */ + c = 'P'; + break; + case 0x9f: /* APC -- Application Program Command */ + c = '_'; + break; + case 0x9e: /* PM -- Privacy Message */ + c = '^'; + break; + case 0x9d: /* OSC -- Operating System Command */ + c = ']'; + break; + } + strreset(); + strescseq.type = c; + term.esc |= ESC_STR; +} + +void tcontrolcode(uchar ascii) { + switch (ascii) { + case '\t': /* HT */ + tputtab(1); + return; + case '\b': /* BS */ + tmoveto(term.c.x - 1, term.c.y); + return; + case '\r': /* CR */ + tmoveto(0, term.c.y); + return; + case '\f': /* LF */ + case '\v': /* VT */ + case '\n': /* LF */ + /* go to first col if the mode is set */ + tnewline(IS_SET(MODE_CRLF)); + return; + case '\a': /* BEL */ + if (term.esc & ESC_STR_END) { + /* backwards compatibility to xterm */ + strhandle(); + } else { + xbell(); + } + break; + case '\033': /* ESC */ + csireset(); + term.esc &= ~(ESC_CSI | ESC_ALTCHARSET | ESC_TEST); + term.esc |= ESC_START; + return; + case '\016': /* SO (LS1 -- Locking shift 1) */ + case '\017': /* SI (LS0 -- Locking shift 0) */ + term.charset = 1 - (ascii - '\016'); + return; + case '\032': /* SUB */ + tsetchar('?', &term.c.attr, term.c.x, term.c.y); + /* FALLTHROUGH */ + case '\030': /* CAN */ + csireset(); + break; + case '\005': /* ENQ (IGNORED) */ + case '\000': /* NUL (IGNORED) */ + case '\021': /* XON (IGNORED) */ + case '\023': /* XOFF (IGNORED) */ + case 0177: /* DEL (IGNORED) */ + return; + case 0x80: /* TODO: PAD */ + case 0x81: /* TODO: HOP */ + case 0x82: /* TODO: BPH */ + case 0x83: /* TODO: NBH */ + case 0x84: /* TODO: IND */ + break; + case 0x85: /* NEL -- Next line */ + tnewline(1); /* always go to first col */ + break; + case 0x86: /* TODO: SSA */ + case 0x87: /* TODO: ESA */ + break; + case 0x88: /* HTS -- Horizontal tab stop */ + term.tabs[term.c.x] = 1; + break; + case 0x89: /* TODO: HTJ */ + case 0x8a: /* TODO: VTS */ + case 0x8b: /* TODO: PLD */ + case 0x8c: /* TODO: PLU */ + case 0x8d: /* TODO: RI */ + case 0x8e: /* TODO: SS2 */ + case 0x8f: /* TODO: SS3 */ + case 0x91: /* TODO: PU1 */ + case 0x92: /* TODO: PU2 */ + case 0x93: /* TODO: STS */ + case 0x94: /* TODO: CCH */ + case 0x95: /* TODO: MW */ + case 0x96: /* TODO: SPA */ + case 0x97: /* TODO: EPA */ + case 0x98: /* TODO: SOS */ + case 0x99: /* TODO: SGCI */ + break; + case 0x9a: /* DECID -- Identify Terminal */ + ttywrite(vtiden, strlen(vtiden), 0); + break; + case 0x9b: /* TODO: CSI */ + case 0x9c: /* TODO: ST */ + break; + case 0x90: /* DCS -- Device Control String */ + case 0x9d: /* OSC -- Operating System Command */ + case 0x9e: /* PM -- Privacy Message */ + case 0x9f: /* APC -- Application Program Command */ + tstrsequence(ascii); + return; + } + /* only CAN, SUB, \a and C1 chars interrupt a sequence */ + term.esc &= ~(ESC_STR_END | ESC_STR); +} + +/* + * returns 1 when the sequence is finished and it hasn't to read + * more characters for this sequence, otherwise 0 + */ +int eschandle(uchar ascii) { + switch (ascii) { + case '[': + term.esc |= ESC_CSI; + return 0; + case '#': + term.esc |= ESC_TEST; + return 0; + case '%': + term.esc |= ESC_UTF8; + return 0; + case 'P': /* DCS -- Device Control String */ + case '_': /* APC -- Application Program Command */ + case '^': /* PM -- Privacy Message */ + case ']': /* OSC -- Operating System Command */ + case 'k': /* old title set compatibility */ + tstrsequence(ascii); + return 0; + case 'n': /* LS2 -- Locking shift 2 */ + case 'o': /* LS3 -- Locking shift 3 */ + term.charset = 2 + (ascii - 'n'); + break; + case '(': /* GZD4 -- set primary charset G0 */ + case ')': /* G1D4 -- set secondary charset G1 */ + case '*': /* G2D4 -- set tertiary charset G2 */ + case '+': /* G3D4 -- set quaternary charset G3 */ + term.icharset = ascii - '('; + term.esc |= ESC_ALTCHARSET; + return 0; + case 'D': /* IND -- Linefeed */ + if (term.c.y == term.bot) { + tscrollup(term.top, 1); + } else { + tmoveto(term.c.x, term.c.y + 1); + } + break; + case 'E': /* NEL -- Next line */ + tnewline(1); /* always go to first col */ + break; + case 'H': /* HTS -- Horizontal tab stop */ + term.tabs[term.c.x] = 1; + break; + case 'M': /* RI -- Reverse index */ + if (term.c.y == term.top) { + tscrolldown(term.top, 1); + } else { + tmoveto(term.c.x, term.c.y - 1); + } + break; + case 'Z': /* DECID -- Identify Terminal */ + ttywrite(vtiden, strlen(vtiden), 0); + break; + case 'c': /* RIS -- Reset to initial state */ + treset(); + resettitle(); + xloadcols(); + break; + case '=': /* DECPAM -- Application keypad */ + xsetmode(1, MODE_APPKEYPAD); + break; + case '>': /* DECPNM -- Normal keypad */ + xsetmode(0, MODE_APPKEYPAD); + break; + case '7': /* DECSC -- Save Cursor */ + tcursor(CURSOR_SAVE); + break; + case '8': /* DECRC -- Restore Cursor */ + tcursor(CURSOR_LOAD); + break; + case '\\': /* ST -- String Terminator */ + if (term.esc & ESC_STR_END) + strhandle(); + break; + default: + fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", + (uchar)ascii, isprint(ascii) ? ascii : '.'); + break; + } + return 1; +} + +void tputc(Rune u) { + char c[UTF_SIZ]; + int control; + int width, len; + Glyph *gp; + + control = ISCONTROL(u); + if (u < 127 || !IS_SET(MODE_UTF8)) { + c[0] = u; + width = len = 1; + } else { + len = utf8encode(u, c); + if (!control && (width = wcwidth(u)) == -1) + width = 1; + } + + if (IS_SET(MODE_PRINT)) + tprinter(c, len); + + /* + * STR sequence must be checked before anything else + * because it uses all following characters until it + * receives a ESC, a SUB, a ST or any other C1 control + * character. + */ + if (term.esc & ESC_STR) { + if (u == '\a' || u == 030 || u == 032 || u == 033 || ISCONTROLC1(u)) { + term.esc &= ~(ESC_START | ESC_STR); + term.esc |= ESC_STR_END; + goto check_control_code; + } + + if (strescseq.len + len >= strescseq.siz) { + /* + * Here is a bug in terminals. If the user never sends + * some code to stop the str or esc command, then st + * will stop responding. But this is better than + * silently failing with unknown characters. At least + * then users will report back. + * + * In the case users ever get fixed, here is the code: + */ + /* + * term.esc = 0; + * strhandle(); + */ + if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2) + return; + strescseq.siz *= 2; + strescseq.buf = xrealloc(strescseq.buf, strescseq.siz); + } + + memmove(&strescseq.buf[strescseq.len], c, len); + strescseq.len += len; + return; + } + +check_control_code: + /* + * Actions of control codes must be performed as soon they arrive + * because they can be embedded inside a control sequence, and + * they must not cause conflicts with sequences. + */ + if (control) { + tcontrolcode(u); + /* + * control codes are not shown ever + */ + if (!term.esc) + term.lastc = 0; + return; + } else if (term.esc & ESC_START) { + if (term.esc & ESC_CSI) { + csiescseq.buf[csiescseq.len++] = u; + if (BETWEEN(u, 0x40, 0x7E) || + csiescseq.len >= sizeof(csiescseq.buf) - 1) { + term.esc = 0; + csiparse(); + csihandle(); + } + return; + } else if (term.esc & ESC_UTF8) { + tdefutf8(u); + } else if (term.esc & ESC_ALTCHARSET) { + tdeftran(u); + } else if (term.esc & ESC_TEST) { + tdectest(u); + } else { + if (!eschandle(u)) + return; + /* sequence already finished */ + } + term.esc = 0; + /* + * All characters which form part of a sequence are not + * printed + */ + return; + } + if (selected(term.c.x, term.c.y)) + selclear(); + + gp = &term.line[term.c.y][term.c.x]; + if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) { + gp->mode |= ATTR_WRAP; + tnewline(1); + gp = &term.line[term.c.y][term.c.x]; + } + + if (IS_SET(MODE_INSERT) && term.c.x + width < term.col) + memmove(gp + width, gp, (term.col - term.c.x - width) * sizeof(Glyph)); + + if (term.c.x + width > term.col) { + tnewline(1); + gp = &term.line[term.c.y][term.c.x]; + } + + tsetchar(u, &term.c.attr, term.c.x, term.c.y); + term.lastc = u; + + if (width == 2) { + gp->mode |= ATTR_WIDE; + if (term.c.x + 1 < term.col) { + gp[1].u = '\0'; + gp[1].mode = ATTR_WDUMMY; + } + } + if (term.c.x + width < term.col) { + tmoveto(term.c.x + width, term.c.y); + } else { + term.c.state |= CURSOR_WRAPNEXT; + } +} + +int twrite(const char *buf, int buflen, int show_ctrl) { + int charsize; + Rune u; + int n; + + for (n = 0; n < buflen; n += charsize) { + if (IS_SET(MODE_UTF8)) { + /* process a complete utf8 char */ + charsize = utf8decode(buf + n, &u, buflen - n); + if (charsize == 0) + break; + } else { + u = buf[n] & 0xFF; + charsize = 1; + } + if (show_ctrl && ISCONTROL(u)) { + if (u & 0x80) { + u &= 0x7f; + tputc('^'); + tputc('['); + } else if (u != '\n' && u != '\r' && u != '\t') { + u ^= 0x40; + tputc('^'); + } + } + tputc(u); + } + return n; +} + +void tresize(int col, int row) { + int i; + int minrow = MIN(row, term.row); + int mincol = MIN(col, term.col); + int *bp; + TCursor c; + + if (col < 1 || row < 1) { + fprintf(stderr, "tresize: error resizing to %dx%d\n", col, row); + return; + } + + /* + * 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 <= term.c.y - row; i++) { + free(term.line[i]); + free(term.alt[i]); + } + /* ensure that both src and dst are not NULL */ + if (i > 0) { + memmove(term.line, term.line + i, row * sizeof(Line)); + memmove(term.alt, term.alt + i, row * sizeof(Line)); + } + for (i += row; i < term.row; i++) { + free(term.line[i]); + free(term.alt[i]); + } + + /* resize to new height */ + term.line = xrealloc(term.line, row * sizeof(Line)); + term.alt = xrealloc(term.alt, row * sizeof(Line)); + term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty)); + term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs)); + + /* resize each row to new width, zero-pad if needed */ + for (i = 0; i < minrow; i++) { + 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.line[i] = xmalloc(col * sizeof(Glyph)); + term.alt[i] = xmalloc(col * sizeof(Glyph)); + } + if (col > term.col) { + bp = term.tabs + term.col; + + memset(bp, 0, sizeof(*term.tabs) * (col - term.col)); + while (--bp > term.tabs && !*bp) + /* nothing */; + for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces) + *bp = 1; + } + /* update terminal size */ + term.col = col; + term.row = row; + /* reset scrolling region */ + tsetscroll(0, row - 1); + /* make use of the LIMIT in tmoveto */ + tmoveto(term.c.x, term.c.y); + /* Clearing both screens (it makes dirty all lines) */ + c = term.c; + for (i = 0; i < 2; i++) { + if (mincol < col && 0 < minrow) { + tclearregion(mincol, 0, col - 1, minrow - 1); + } + if (0 < col && minrow < row) { + tclearregion(0, minrow, col - 1, row - 1); + } + tswapscreen(); + tcursor(CURSOR_LOAD); + } + term.c = c; +} + +void resettitle(void) { + xsettitle(NULL); +} + +void drawregion(int x1, int y1, int x2, int y2) { + int y; + + for (y = y1; y < y2; y++) { + if (!term.dirty[y]) + continue; + + term.dirty[y] = 0; + xdrawline(term.line[y], x1, y, x2); + } +} + +void draw(void) { + int cx = term.c.x, ocx = term.ocx, ocy = term.ocy; + + if (!xstartdraw()) + return; + + /* adjust cursor position */ + LIMIT(term.ocx, 0, term.col - 1); + LIMIT(term.ocy, 0, term.row - 1); + if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY) + term.ocx--; + if (term.line[term.c.y][cx].mode & ATTR_WDUMMY) + cx--; + + drawregion(0, 0, term.col, term.row); + xdrawcursor(cx, term.c.y, term.line[term.c.y][cx], term.ocx, term.ocy, + term.line[term.ocy][term.ocx]); + term.ocx = cx; + term.ocy = term.c.y; + xfinishdraw(); + if (ocx != term.ocx || ocy != term.ocy) + xximspot(term.ocx, term.ocy); +} + +void redraw(void) { + tfulldirt(); + draw(); +} diff --git a/bin/st/st.h b/bin/st/st.h new file mode 100644 index 0000000000..856a0d1fbf --- /dev/null +++ b/bin/st/st.h @@ -0,0 +1,125 @@ +/* See LICENSE for license details. */ + +#include +#include + +/* macros */ +#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 BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b)) +#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d)) +#define DEFAULT(a, b) (a) = (a) ? (a) : (b) +#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x) +#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \ + (a).bg != (b).bg) +#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \ + (t1.tv_nsec-t2.tv_nsec)/1E6) +#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit))) + +#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b)) +#define IS_TRUECOL(x) (1 << 24 & (x)) + +enum glyph_attribute { + ATTR_NULL = 0, + ATTR_BOLD = 1 << 0, + ATTR_FAINT = 1 << 1, + ATTR_ITALIC = 1 << 2, + ATTR_UNDERLINE = 1 << 3, + ATTR_BLINK = 1 << 4, + ATTR_REVERSE = 1 << 5, + ATTR_INVISIBLE = 1 << 6, + ATTR_STRUCK = 1 << 7, + ATTR_WRAP = 1 << 8, + ATTR_WIDE = 1 << 9, + ATTR_WDUMMY = 1 << 10, + ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT, +}; + +enum selection_mode { + SEL_IDLE = 0, + SEL_EMPTY = 1, + SEL_READY = 2 +}; + +enum selection_type { + SEL_REGULAR = 1, + SEL_RECTANGULAR = 2 +}; + +enum selection_snap { + SNAP_WORD = 1, + SNAP_LINE = 2 +}; + +typedef unsigned char uchar; +typedef unsigned int uint; +typedef unsigned long ulong; +typedef unsigned short ushort; + +typedef uint_least32_t Rune; + +#define Glyph Glyph_ +typedef struct { + Rune u; /* character code */ + ushort mode; /* attribute flags */ + uint32_t fg; /* foreground */ + uint32_t bg; /* background */ +} Glyph; + +typedef Glyph *Line; + +typedef union { + int i; + uint ui; + float f; + const void *v; + const char *s; +} Arg; + +void die(const char *, ...); +void redraw(void); +void draw(void); + +void printscreen(const Arg *); +void printsel(const Arg *); +void toggleprinter(const Arg *); + +int tattrset(int); +void tnew(int, int); +void tresize(int, int); +void tsetdirtattr(int); +void ttyhangup(void); +int ttynew(const char *, char *, const char *, char **); +size_t ttyread(void); +void ttyresize(int, int); +void ttywrite(const char *, size_t, int); + +void resettitle(void); + +void selclear(void); +void selinit(void); +void selstart(int, int, int); +void selextend(int, int, int, int); +int selected(int, int); +char *getsel(void); + +size_t utf8encode(Rune, char *); + +void *xmalloc(size_t); +void *xrealloc(void *, size_t); +char *xstrdup(const char *); + +/* config.h globals */ +extern char *utmp; +extern char *scroll; +extern char *stty_args; +extern char *vtiden; +extern wchar_t *worddelimiters; +extern int allowaltscreen; +extern int allowwindowops; +extern char *termname; +extern unsigned int tabspaces; +extern unsigned int defaultfg; +extern unsigned int defaultbg; +extern unsigned int defaultcs; diff --git a/bin/st/win.c b/bin/st/win.c new file mode 100644 index 0000000000..9604ee6ab8 --- /dev/null +++ b/bin/st/win.c @@ -0,0 +1,457 @@ +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "st.h" +#include "font.h" +#include "win.h" +#include "input.h" + +#include "config.h" + +/* macros */ +#define IS_SET(flag) ((win.mode & (flag)) != 0) +#define TRUERED(x) (((x)&0xff0000) >> 8) +#define TRUEGREEN(x) (((x)&0xff00)) +#define TRUEBLUE(x) (((x)&0xff) << 8) + +typedef union { + struct { + unsigned char r, g, b; + }; + unsigned int val; +} color_t; + +static inline color_t get_color(int i) { + return (color_t){.val = colors[i]}; +} + +typedef unsigned int fbval_t; + +struct { + int fd; + struct fb_var_screeninfo info; + void *fb; /* mmap()ed FB memory */ + int bpp; /* bytes per pixel */ + int bpr; /* bytes per row */ + size_t len; +} fb; + +struct { + int tw, th; /* tty width and height */ + int w, h; /* window width and height */ + int ch; /* char height */ + int cw; /* char width */ + int mode; /* window state/mode flags */ + int cursor; /* cursor style */ + int cols, rows; + font_t *font; +} win; + +static int fb_init() { + if ((fb.fd = open(fb_dev, O_RDWR)) < 0) + return 0; + if (ioctl(fb.fd, FBIOGET_VSCREENINFO, &fb.info) < 0) + return 0; + + fcntl(fb.fd, F_SETFD, fcntl(fb.fd, F_GETFD) | FD_CLOEXEC); + + fb.bpp = (fb.info.bits_per_pixel + 7) >> 3; + fb.bpr = fb.info.xres * fb.bpp; + fb.len = fb.bpr * fb.info.yres; + fb.fb = mmap(NULL, fb.len, PROT_READ | PROT_WRITE, MAP_SHARED, fb.fd, 0); + if (fb.fb == MAP_FAILED) + return 0; + + return 1; +} + +static inline void *fb_mem(int r) { + return fb.fb + r * fb.bpr; +} + +static void draw_rect(color_t color, int x, int y, int width, int height) { + for (int i = 0; i < height; i++) { + fbval_t *row = fb_mem(i + y); + for (int j = 0; j < width; j++) { + row[j + x] = color.val; + } + } +} + +static void clear_rect(int x1, int y1, int x2, int y2) { + draw_rect(get_color(IS_SET(MODE_REVERSE) ? defaultfg : defaultbg), x1, y1, + x2 - x1, y2 - y1); +} + +static void get_glyph_col(Glyph g, color_t *colfg, color_t *colbg) { + color_t temp; + + if (IS_TRUECOL(g.fg)) { + colfg->r = TRUERED(g.fg); + colfg->g = TRUEGREEN(g.fg); + colfg->b = TRUEBLUE(g.fg); + } else + *colfg = get_color(g.fg); + + if (IS_TRUECOL(g.bg)) { + colbg->r = TRUERED(g.bg); + colbg->g = TRUEGREEN(g.bg); + colbg->b = TRUEBLUE(g.bg); + } else + *colbg = get_color(g.bg); + + /* Change basic system colors [0-7] to bright system colors [8-15] */ + if ((g.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(g.fg, 0, 7)) + *colfg = get_color(g.fg + 8); + + if (IS_SET(MODE_REVERSE)) { + if (colfg->val == get_color(defaultfg).val) { + *colfg = get_color(g.bg); + } else { + colfg->r = ~colfg->r; + colfg->g = ~colfg->g; + colfg->b = ~colfg->b; + } + + if (colbg->val == get_color(defaultbg).val) { + *colbg = get_color(g.fg); + } else { + colbg->r = ~colbg->r; + colbg->g = ~colbg->g; + colbg->b = ~colbg->b; + } + } + + if ((g.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) { + colfg->r /= 2; + colfg->g /= 2; + colfg->b /= 2; + } + + if (g.mode & ATTR_REVERSE) { + temp = *colfg; + *colfg = *colbg; + *colbg = temp; + } + + if (g.mode & ATTR_BLINK && win.mode & MODE_BLINK) + *colfg = *colbg; + + if (g.mode & ATTR_INVISIBLE) + *colfg = *colbg; +} + +static void draw_glyph(Glyph base, int x, int y) { + int charlen = ((base.mode & ATTR_WIDE) ? 2 : 1); + int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, + width = charlen * win.cw; + Rune rune = base.u; + color_t colfg, colbg; + + get_glyph_col(base, &colfg, &colbg); + + if (rune > 127) + rune = '?'; + + /* Intelligent cleaning up of the borders. */ + if (x == 0) { + clear_rect( + 0, (y == 0) ? 0 : winy, borderpx, + ((winy + win.ch >= borderpx + win.th) ? win.h : (winy + win.ch))); + } + if (winx + width >= borderpx + win.tw) { + clear_rect( + winx + width, (y == 0) ? 0 : winy, win.w, + ((winy + win.ch >= borderpx + win.th) ? win.h : (winy + win.ch))); + } + if (y == 0) + clear_rect(winx, 0, winx + width, borderpx); + if (winy + win.ch >= borderpx + win.th) + clear_rect(winx, winy + win.ch, winx + width, win.h); + + char *src = font_glyph(win.font, rune); + for (int j = 0; j < win.ch; j++) { + fbval_t *row = fb_mem(j + winy); + for (int i = 0; i < win.cw; i++) { + int b = i % 8; + if (b == 0 && i != 0) + src++; + + if ((1 << b) & *src) + row[(winx + win.cw - 1 - i)] = colfg.val; + else + row[(winx + win.cw - 1 - i)] = colbg.val; + } + src++; + } +} + +static int win_init() { + int col, row; + + win.font = font_load(font_file); + if (!win.font) + return 0; + + win.ch = win.font->fontheight; + win.cw = win.font->fontwidth; + win.w = fb.info.xres; + win.h = fb.info.yres; + + col = (win.w - 2 * borderpx) / win.cw; + row = (win.h - 2 * borderpx) / win.ch; + col = MAX(1, col); + row = MAX(1, row); + + win.cols = col; + win.rows = row; + win.tw = col * win.cw; + win.th = row * win.ch; + + clear_rect(0, 0, win.w, win.h); + + ttyresize(win.tw, win.th); + + win.mode |= MODE_FOCUSED; + + return 1; +} + +void xbell(void) { +} + +void xclipcopy(void) { +} + +void xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og) { + return; + color_t drawcol; + + /* remove the old cursor */ + if (selected(ox, oy)) + og.mode ^= ATTR_REVERSE; + draw_glyph(og, ox, oy); + + if (IS_SET(MODE_HIDE)) + return; + + /* + * Select the right color for the right mode. + */ + g.mode &= ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK | ATTR_WIDE; + + if (IS_SET(MODE_REVERSE)) { + g.mode |= ATTR_REVERSE; + g.bg = defaultfg; + if (selected(cx, cy)) { + drawcol = get_color(defaultcs); + g.fg = defaultrcs; + } else { + drawcol = get_color(defaultrcs); + g.fg = defaultcs; + } + } else { + if (selected(cx, cy)) { + g.fg = defaultfg; + g.bg = defaultrcs; + } else { + g.fg = defaultbg; + g.bg = defaultcs; + } + drawcol = get_color(g.bg); + } + + /* draw the new one */ + if (IS_SET(MODE_FOCUSED)) { + switch (win.cursor) { + case 7: /* st extension */ + g.u = 0x2603; /* snowman (U+2603) */ + /* FALLTHROUGH */ + case 0: /* Blinking Block */ + case 1: /* Blinking Block (Default) */ + case 2: /* Steady Block */ + draw_glyph(g, cx, cy); + break; + case 3: /* Blinking Underline */ + case 4: /* Steady Underline */ + draw_rect(drawcol, borderpx + cx * win.cw, + borderpx + (cy + 1) * win.ch - cursorthickness, win.cw, + cursorthickness); + break; + case 5: /* Blinking bar */ + case 6: /* Steady bar */ + draw_rect(drawcol, borderpx + cx * win.cw, borderpx + cy * win.ch, + cursorthickness, win.ch); + break; + } + } else { + draw_rect(drawcol, borderpx + cx * win.cw, borderpx + cy * win.ch, + win.cw - 1, 1); + draw_rect(drawcol, borderpx + cx * win.cw, borderpx + cy * win.ch, 1, + win.ch - 1); + draw_rect(drawcol, borderpx + (cx + 1) * win.cw - 1, borderpx + cy * win.ch, + 1, win.ch - 1); + draw_rect(drawcol, borderpx + cx * win.cw, borderpx + (cy + 1) * win.ch - 1, + win.cw, 1); + } +} + +void xdrawline(Line line, int x1, int y1, int x2) { + return; + for (int x = x1; x < x2; x++) { + draw_glyph(line[x], x, y1); + } +} + +void xfinishdraw(void) { +} + +void xloadcols(void) { +} + +int xsetcolorname(int x, const char *name) { + return 0; +} + +int xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b) { + + return 0; +} + +void xseticontitle(char *p) { +} + +void xsettitle(char *p) { +} + +int xsetcursor(int cursor) { + if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */ + return 1; + win.cursor = cursor; + return 0; +} + +void xsetmode(int set, unsigned int flags) { + int mode = win.mode; + MODBIT(win.mode, set, flags); + if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE)) + redraw(); +} + +void xsetpointermotion(int set) { +} + +void xsetsel(char *str) { +} + +int xstartdraw(void) { + return 1; +} + +void xximspot(int x, int y) { +} + +static void run() { + fd_set rfd; + int ttyfd, drawing, inputfd; + struct timespec seltv, *tv, now, lastblink, trigger; + double timeout; + + ttyfd = ttynew(NULL, shell, NULL, NULL); + inputfd = input_getfd(); + + for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) { + FD_ZERO(&rfd); + FD_SET(ttyfd, &rfd); + FD_SET(inputfd, &rfd); + + seltv.tv_sec = timeout / 1E3; + seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec); + tv = timeout >= 0 ? &seltv : NULL; + + if (pselect(MAX(inputfd, ttyfd) + 1, &rfd, NULL, NULL, tv, NULL) < 0) { + if (errno == EINTR) + continue; + die("select failed: %s\n", strerror(errno)); + } + clock_gettime(CLOCK_MONOTONIC, &now); + + if (FD_ISSET(ttyfd, &rfd)) + ttyread(); + + if (FD_ISSET(inputfd, &rfd)) + input_read(); + + /* + * To reduce flicker and tearing, when new content or event + * triggers drawing, we first wait a bit to ensure we got + * everything, and if nothing new arrives - we draw. + * We start with trying to wait minlatency ms. If more content + * arrives sooner, we retry with shorter and shorter periods, + * and eventually draw even without idle after maxlatency ms. + * Typically this results in low latency while interacting, + * maximum latency intervals during `cat huge.txt`, and perfect + * sync with periodic updates from animations/key-repeats/etc. + */ + if (FD_ISSET(ttyfd, &rfd) || FD_ISSET(inputfd, &rfd)) { + if (!drawing) { + trigger = now; + drawing = 1; + } + timeout = (maxlatency - TIMEDIFF(now, trigger)) / maxlatency * minlatency; + if (timeout > 0) + continue; /* we have time, try to find idle */ + } + + /* idle detected or maxlatency exhausted -> draw */ + + timeout = -1; + + if (blinktimeout && tattrset(ATTR_BLINK)) { + timeout = blinktimeout - TIMEDIFF(now, lastblink); + if (timeout <= 0) { + if (-timeout > blinktimeout) + win.mode |= MODE_BLINK; + win.mode ^= MODE_BLINK; + tsetdirtattr(ATTR_BLINK); + lastblink = now; + timeout = blinktimeout; + } + } + + // draw(); + drawing = 0; + } +} + +int main(int argc, char *argv[]) { + if (!fb_init()) + die("frame buffer init error\n"); + + if (!input_init(ev_dev)) + die("input init error\n"); + + if (!win_init()) + die("window init error\n"); + + tnew(win.cols, win.rows); + selinit(); + run(); + + return 0; +} \ No newline at end of file diff --git a/bin/st/win.h b/bin/st/win.h new file mode 100644 index 0000000000..6de960deab --- /dev/null +++ b/bin/st/win.h @@ -0,0 +1,41 @@ +/* See LICENSE for license details. */ + +enum win_mode { + MODE_VISIBLE = 1 << 0, + MODE_FOCUSED = 1 << 1, + MODE_APPKEYPAD = 1 << 2, + MODE_MOUSEBTN = 1 << 3, + MODE_MOUSEMOTION = 1 << 4, + MODE_REVERSE = 1 << 5, + MODE_KBDLOCK = 1 << 6, + MODE_HIDE = 1 << 7, + MODE_APPCURSOR = 1 << 8, + MODE_MOUSESGR = 1 << 9, + MODE_8BIT = 1 << 10, + MODE_BLINK = 1 << 11, + MODE_FBLINK = 1 << 12, + MODE_FOCUS = 1 << 13, + MODE_MOUSEX10 = 1 << 14, + MODE_MOUSEMANY = 1 << 15, + MODE_BRCKTPASTE = 1 << 16, + MODE_NUMLOCK = 1 << 17, + MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\ + |MODE_MOUSEMANY, +}; + +void xbell(void); +void xclipcopy(void); +void xdrawcursor(int, int, Glyph, int, int, Glyph); +void xdrawline(Line, int, int, int); +void xfinishdraw(void); +void xloadcols(void); +int xsetcolorname(int, const char *); +int xgetcolor(int, unsigned char *, unsigned char *, unsigned char *); +void xseticontitle(char *); +void xsettitle(char *); +int xsetcursor(int); +void xsetmode(int, unsigned int); +void xsetpointermotion(int); +void xsetsel(char *); +int xstartdraw(void); +void xximspot(int, int); diff --git a/etc/Makefile b/etc/Makefile index f5c24a2687..343660f295 100644 --- a/etc/Makefile +++ b/etc/Makefile @@ -2,7 +2,7 @@ TOPDIR = $(realpath ..) -FILES = group master.passwd rc.init rc.shutdown .kshrc shells +FILES = group master.passwd rc.init rc.shutdown .kshrc shells spleen-8x16.fnt INSTALL-FILES = $(addprefix $(SYSROOT)/etc/, $(FILES)) all: build diff --git a/etc/spleen-8x16.fnt b/etc/spleen-8x16.fnt new file mode 100644 index 0000000000..cb0ee9ac8d Binary files /dev/null and b/etc/spleen-8x16.fnt differ diff --git a/include/sys/fb.h b/include/sys/fb.h index c001617ea5..f4083abd76 100644 --- a/include/sys/fb.h +++ b/include/sys/fb.h @@ -9,6 +9,14 @@ #define FBIOCSET_FBINFO _IOW(FB_IOC_MAGIC, 1, struct fb_info) #define FBIOCSET_PALETTE _IOW(FB_IOC_MAGIC, 2, struct fb_palette) +#define FBIOGET_VSCREENINFO _IOR(FB_IOC_MAGIC, 3, struct fb_var_screeninfo) +#define FBIOPUT_VSCREENINFO _IOW(FB_IOC_MAGIC, 3, struct fb_var_screeninfo) + +struct fb_var_screeninfo { + uint32_t xres, yres; + uint32_t bits_per_pixel; +}; + struct fb_color { uint8_t r, g, b; }; diff --git a/include/sys/select.h b/include/sys/select.h index 67c2b05b81..698f782d6d 100644 --- a/include/sys/select.h +++ b/include/sys/select.h @@ -41,6 +41,9 @@ #include __BEGIN_DECLS +int pselect(int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, + const struct timespec *__restrict, const sigset_t *__restrict); + int select(int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, struct timeval *__restrict); __END_DECLS diff --git a/lib/libc/sys/select.c b/lib/libc/sys/select.c index eb8b1b0fcf..ff8c14be8d 100644 --- a/lib/libc/sys/select.c +++ b/lib/libc/sys/select.c @@ -5,6 +5,12 @@ #include #include +int pselect(int nfds, fd_set *readfds, fd_set *writefds, + fd_set *exceptfds, const struct timespec *timeout, + const sigset_t *sigmask) { + return 0; +} + int select(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict exceptfds, struct timeval *restrict timeout) { int kq;