ref: e6665c534f2efee4ae14b5b90395d2835bba9207
parent: ea898044375b4329be930d3b2a4de7a8012ce920
author: Roberto E. Vargas Caballero <k0ga@shike2.com>
date: Sun Aug 14 07:20:12 EDT 2022
Import st source code
--- /dev/null
+++ b/config.h
@@ -1,0 +1,474 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * 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;
+
+/*
+ * bell volume. It must be a value between -100 and 100. Use 0 for disabling
+ * it
+ */
+static int bellvolume = 0;
+
+/* 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;
+
+/* Terminal colors (16 first used in escape sequence) */
+static const char *colorname[] = {+ /* 8 normal colors */
+ "black",
+ "red3",
+ "green3",
+ "yellow3",
+ "blue2",
+ "magenta3",
+ "cyan3",
+ "gray90",
+
+ /* 8 bright colors */
+ "gray50",
+ "red",
+ "green",
+ "yellow",
+ "#5c5cff",
+ "magenta",
+ "cyan",
+ "white",
+
+ [255] = 0,
+
+ /* more colors can be added after 255 to use with DefaultXX */
+ "#cccccc",
+ "#555555",
+ "gray90", /* default foreground colour */
+ "black", /* default background colour */
+};
+
+
+/*
+ * Default colors (colorname index)
+ * foreground, background, cursor, reverse cursor
+ */
+unsigned int defaultfg = 258;
+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 columns and rows numbers
+ */
+
+static unsigned int cols = 80;
+static unsigned int rows = 24;
+
+/*
+ * Default colour and shape of the mouse cursor
+ */
+static unsigned int mouseshape = XC_xterm;
+static unsigned int mousefg = 7;
+static unsigned int mousebg = 0;
+
+/*
+ * Color used to display font attributes when fontconfig selected a font which
+ * doesn't match the ones requested.
+ */
+static unsigned int defaultattr = 11;
+
+/*
+ * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+ * modifier, set to 0 to not use it.
+ */
+static uint forcemousemod = ShiftMask;
+
+/*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+static MouseShortcut mshortcuts[] = {+ /* mask button function argument release */
+ { XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1 },+ { ShiftMask, Button4, ttysend, {.s = "\033[5;2~"} },+ { XK_ANY_MOD, Button4, ttysend, {.s = "\031"} },+ { ShiftMask, Button5, ttysend, {.s = "\033[6;2~"} },+ { XK_ANY_MOD, Button5, ttysend, {.s = "\005"} },+};
+
+/* Internal keyboard shortcuts. */
+#define MODKEY Mod1Mask
+#define TERMMOD (ControlMask|ShiftMask)
+
+static Shortcut shortcuts[] = {+ /* mask keysym function argument */
+ { XK_ANY_MOD, XK_Break, sendbreak, {.i = 0} },+ { ControlMask, XK_Print, toggleprinter, {.i = 0} },+ { ShiftMask, XK_Print, printscreen, {.i = 0} },+ { XK_ANY_MOD, XK_Print, printsel, {.i = 0} },+ { TERMMOD, XK_Prior, zoom, {.f = +1} },+ { TERMMOD, XK_Next, zoom, {.f = -1} },+ { TERMMOD, XK_Home, zoomreset, {.f = 0} },+ { TERMMOD, XK_C, clipcopy, {.i = 0} },+ { TERMMOD, XK_V, clippaste, {.i = 0} },+ { TERMMOD, XK_Y, selpaste, {.i = 0} },+ { ShiftMask, XK_Insert, selpaste, {.i = 0} },+ { TERMMOD, XK_Num_Lock, numlock, {.i = 0} },+};
+
+/*
+ * Special keys (change & recompile st.info accordingly)
+ *
+ * Mask value:
+ * * Use XK_ANY_MOD to match the key no matter modifiers state
+ * * Use XK_NO_MOD to match the key alone (no modifiers)
+ * appkey value:
+ * * 0: no value
+ * * > 0: keypad application mode enabled
+ * * = 2: term.numlock = 1
+ * * < 0: keypad application mode disabled
+ * appcursor value:
+ * * 0: no value
+ * * > 0: cursor application mode enabled
+ * * < 0: cursor application mode disabled
+ *
+ * Be careful with the order of the definitions because st searches in
+ * this table sequentially, so any XK_ANY_MOD must be in the last
+ * position for a key.
+ */
+
+/*
+ * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
+ * to be mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = { -1 };+
+/*
+ * State bits to ignore when matching key or button events. By default,
+ * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
+ */
+static uint ignoremod = Mod2Mask|XK_SWITCH_MOD;
+
+/*
+ * This is the huge key array which defines all compatibility to the Linux
+ * world. Please decide about changes wisely.
+ */
+static Key key[] = {+ /* keysym mask string appkey appcursor */
+ { XK_KP_Home, ShiftMask, "\033[2J", 0, -1},+ { XK_KP_Home, ShiftMask, "\033[1;2H", 0, +1},+ { XK_KP_Home, XK_ANY_MOD, "\033[H", 0, -1},+ { XK_KP_Home, XK_ANY_MOD, "\033[1~", 0, +1},+ { XK_KP_Up, XK_ANY_MOD, "\033Ox", +1, 0},+ { XK_KP_Up, XK_ANY_MOD, "\033[A", 0, -1},+ { XK_KP_Up, XK_ANY_MOD, "\033OA", 0, +1},+ { XK_KP_Down, XK_ANY_MOD, "\033Or", +1, 0},+ { XK_KP_Down, XK_ANY_MOD, "\033[B", 0, -1},+ { XK_KP_Down, XK_ANY_MOD, "\033OB", 0, +1},+ { XK_KP_Left, XK_ANY_MOD, "\033Ot", +1, 0},+ { XK_KP_Left, XK_ANY_MOD, "\033[D", 0, -1},+ { XK_KP_Left, XK_ANY_MOD, "\033OD", 0, +1},+ { XK_KP_Right, XK_ANY_MOD, "\033Ov", +1, 0},+ { XK_KP_Right, XK_ANY_MOD, "\033[C", 0, -1},+ { XK_KP_Right, XK_ANY_MOD, "\033OC", 0, +1},+ { XK_KP_Prior, ShiftMask, "\033[5;2~", 0, 0},+ { XK_KP_Prior, XK_ANY_MOD, "\033[5~", 0, 0},+ { XK_KP_Begin, XK_ANY_MOD, "\033[E", 0, 0},+ { XK_KP_End, ControlMask, "\033[J", -1, 0},+ { XK_KP_End, ControlMask, "\033[1;5F", +1, 0},+ { XK_KP_End, ShiftMask, "\033[K", -1, 0},+ { XK_KP_End, ShiftMask, "\033[1;2F", +1, 0},+ { XK_KP_End, XK_ANY_MOD, "\033[4~", 0, 0},+ { XK_KP_Next, ShiftMask, "\033[6;2~", 0, 0},+ { XK_KP_Next, XK_ANY_MOD, "\033[6~", 0, 0},+ { XK_KP_Insert, ShiftMask, "\033[2;2~", +1, 0},+ { XK_KP_Insert, ShiftMask, "\033[4l", -1, 0},+ { XK_KP_Insert, ControlMask, "\033[L", -1, 0},+ { XK_KP_Insert, ControlMask, "\033[2;5~", +1, 0},+ { XK_KP_Insert, XK_ANY_MOD, "\033[4h", -1, 0},+ { XK_KP_Insert, XK_ANY_MOD, "\033[2~", +1, 0},+ { XK_KP_Delete, ControlMask, "\033[M", -1, 0},+ { XK_KP_Delete, ControlMask, "\033[3;5~", +1, 0},+ { XK_KP_Delete, ShiftMask, "\033[2K", -1, 0},+ { XK_KP_Delete, ShiftMask, "\033[3;2~", +1, 0},+ { XK_KP_Delete, XK_ANY_MOD, "\033[P", -1, 0},+ { XK_KP_Delete, XK_ANY_MOD, "\033[3~", +1, 0},+ { XK_KP_Multiply, XK_ANY_MOD, "\033Oj", +2, 0},+ { XK_KP_Add, XK_ANY_MOD, "\033Ok", +2, 0},+ { XK_KP_Enter, XK_ANY_MOD, "\033OM", +2, 0},+ { XK_KP_Enter, XK_ANY_MOD, "\r", -1, 0},+ { XK_KP_Subtract, XK_ANY_MOD, "\033Om", +2, 0},+ { XK_KP_Decimal, XK_ANY_MOD, "\033On", +2, 0},+ { XK_KP_Divide, XK_ANY_MOD, "\033Oo", +2, 0},+ { XK_KP_0, XK_ANY_MOD, "\033Op", +2, 0},+ { XK_KP_1, XK_ANY_MOD, "\033Oq", +2, 0},+ { XK_KP_2, XK_ANY_MOD, "\033Or", +2, 0},+ { XK_KP_3, XK_ANY_MOD, "\033Os", +2, 0},+ { XK_KP_4, XK_ANY_MOD, "\033Ot", +2, 0},+ { XK_KP_5, XK_ANY_MOD, "\033Ou", +2, 0},+ { XK_KP_6, XK_ANY_MOD, "\033Ov", +2, 0},+ { XK_KP_7, XK_ANY_MOD, "\033Ow", +2, 0},+ { XK_KP_8, XK_ANY_MOD, "\033Ox", +2, 0},+ { XK_KP_9, XK_ANY_MOD, "\033Oy", +2, 0},+ { XK_Up, ShiftMask, "\033[1;2A", 0, 0},+ { XK_Up, Mod1Mask, "\033[1;3A", 0, 0},+ { XK_Up, ShiftMask|Mod1Mask,"\033[1;4A", 0, 0},+ { XK_Up, ControlMask, "\033[1;5A", 0, 0},+ { XK_Up, ShiftMask|ControlMask,"\033[1;6A", 0, 0},+ { XK_Up, ControlMask|Mod1Mask,"\033[1;7A", 0, 0},+ { XK_Up,ShiftMask|ControlMask|Mod1Mask,"\033[1;8A", 0, 0},+ { XK_Up, XK_ANY_MOD, "\033[A", 0, -1},+ { XK_Up, XK_ANY_MOD, "\033OA", 0, +1},+ { XK_Down, ShiftMask, "\033[1;2B", 0, 0},+ { XK_Down, Mod1Mask, "\033[1;3B", 0, 0},+ { XK_Down, ShiftMask|Mod1Mask,"\033[1;4B", 0, 0},+ { XK_Down, ControlMask, "\033[1;5B", 0, 0},+ { XK_Down, ShiftMask|ControlMask,"\033[1;6B", 0, 0},+ { XK_Down, ControlMask|Mod1Mask,"\033[1;7B", 0, 0},+ { XK_Down,ShiftMask|ControlMask|Mod1Mask,"\033[1;8B",0, 0},+ { XK_Down, XK_ANY_MOD, "\033[B", 0, -1},+ { XK_Down, XK_ANY_MOD, "\033OB", 0, +1},+ { XK_Left, ShiftMask, "\033[1;2D", 0, 0},+ { XK_Left, Mod1Mask, "\033[1;3D", 0, 0},+ { XK_Left, ShiftMask|Mod1Mask,"\033[1;4D", 0, 0},+ { XK_Left, ControlMask, "\033[1;5D", 0, 0},+ { XK_Left, ShiftMask|ControlMask,"\033[1;6D", 0, 0},+ { XK_Left, ControlMask|Mod1Mask,"\033[1;7D", 0, 0},+ { XK_Left,ShiftMask|ControlMask|Mod1Mask,"\033[1;8D",0, 0},+ { XK_Left, XK_ANY_MOD, "\033[D", 0, -1},+ { XK_Left, XK_ANY_MOD, "\033OD", 0, +1},+ { XK_Right, ShiftMask, "\033[1;2C", 0, 0},+ { XK_Right, Mod1Mask, "\033[1;3C", 0, 0},+ { XK_Right, ShiftMask|Mod1Mask,"\033[1;4C", 0, 0},+ { XK_Right, ControlMask, "\033[1;5C", 0, 0},+ { XK_Right, ShiftMask|ControlMask,"\033[1;6C", 0, 0},+ { XK_Right, ControlMask|Mod1Mask,"\033[1;7C", 0, 0},+ { XK_Right,ShiftMask|ControlMask|Mod1Mask,"\033[1;8C",0, 0},+ { XK_Right, XK_ANY_MOD, "\033[C", 0, -1},+ { XK_Right, XK_ANY_MOD, "\033OC", 0, +1},+ { XK_ISO_Left_Tab, ShiftMask, "\033[Z", 0, 0},+ { XK_Return, Mod1Mask, "\033\r", 0, 0},+ { XK_Return, XK_ANY_MOD, "\r", 0, 0},+ { XK_Insert, ShiftMask, "\033[4l", -1, 0},+ { XK_Insert, ShiftMask, "\033[2;2~", +1, 0},+ { XK_Insert, ControlMask, "\033[L", -1, 0},+ { XK_Insert, ControlMask, "\033[2;5~", +1, 0},+ { XK_Insert, XK_ANY_MOD, "\033[4h", -1, 0},+ { XK_Insert, XK_ANY_MOD, "\033[2~", +1, 0},+ { XK_Delete, ControlMask, "\033[M", -1, 0},+ { XK_Delete, ControlMask, "\033[3;5~", +1, 0},+ { XK_Delete, ShiftMask, "\033[2K", -1, 0},+ { XK_Delete, ShiftMask, "\033[3;2~", +1, 0},+ { XK_Delete, XK_ANY_MOD, "\033[P", -1, 0},+ { XK_Delete, XK_ANY_MOD, "\033[3~", +1, 0},+ { XK_BackSpace, XK_NO_MOD, "\177", 0, 0},+ { XK_BackSpace, Mod1Mask, "\033\177", 0, 0},+ { XK_Home, ShiftMask, "\033[2J", 0, -1},+ { XK_Home, ShiftMask, "\033[1;2H", 0, +1},+ { XK_Home, XK_ANY_MOD, "\033[H", 0, -1},+ { XK_Home, XK_ANY_MOD, "\033[1~", 0, +1},+ { XK_End, ControlMask, "\033[J", -1, 0},+ { XK_End, ControlMask, "\033[1;5F", +1, 0},+ { XK_End, ShiftMask, "\033[K", -1, 0},+ { XK_End, ShiftMask, "\033[1;2F", +1, 0},+ { XK_End, XK_ANY_MOD, "\033[4~", 0, 0},+ { XK_Prior, ControlMask, "\033[5;5~", 0, 0},+ { XK_Prior, ShiftMask, "\033[5;2~", 0, 0},+ { XK_Prior, XK_ANY_MOD, "\033[5~", 0, 0},+ { XK_Next, ControlMask, "\033[6;5~", 0, 0},+ { XK_Next, ShiftMask, "\033[6;2~", 0, 0},+ { XK_Next, XK_ANY_MOD, "\033[6~", 0, 0},+ { XK_F1, XK_NO_MOD, "\033OP" , 0, 0},+ { XK_F1, /* F13 */ ShiftMask, "\033[1;2P", 0, 0},+ { XK_F1, /* F25 */ ControlMask, "\033[1;5P", 0, 0},+ { XK_F1, /* F37 */ Mod4Mask, "\033[1;6P", 0, 0},+ { XK_F1, /* F49 */ Mod1Mask, "\033[1;3P", 0, 0},+ { XK_F1, /* F61 */ Mod3Mask, "\033[1;4P", 0, 0},+ { XK_F2, XK_NO_MOD, "\033OQ" , 0, 0},+ { XK_F2, /* F14 */ ShiftMask, "\033[1;2Q", 0, 0},+ { XK_F2, /* F26 */ ControlMask, "\033[1;5Q", 0, 0},+ { XK_F2, /* F38 */ Mod4Mask, "\033[1;6Q", 0, 0},+ { XK_F2, /* F50 */ Mod1Mask, "\033[1;3Q", 0, 0},+ { XK_F2, /* F62 */ Mod3Mask, "\033[1;4Q", 0, 0},+ { XK_F3, XK_NO_MOD, "\033OR" , 0, 0},+ { XK_F3, /* F15 */ ShiftMask, "\033[1;2R", 0, 0},+ { XK_F3, /* F27 */ ControlMask, "\033[1;5R", 0, 0},+ { XK_F3, /* F39 */ Mod4Mask, "\033[1;6R", 0, 0},+ { XK_F3, /* F51 */ Mod1Mask, "\033[1;3R", 0, 0},+ { XK_F3, /* F63 */ Mod3Mask, "\033[1;4R", 0, 0},+ { XK_F4, XK_NO_MOD, "\033OS" , 0, 0},+ { XK_F4, /* F16 */ ShiftMask, "\033[1;2S", 0, 0},+ { XK_F4, /* F28 */ ControlMask, "\033[1;5S", 0, 0},+ { XK_F4, /* F40 */ Mod4Mask, "\033[1;6S", 0, 0},+ { XK_F4, /* F52 */ Mod1Mask, "\033[1;3S", 0, 0},+ { XK_F5, XK_NO_MOD, "\033[15~", 0, 0},+ { XK_F5, /* F17 */ ShiftMask, "\033[15;2~", 0, 0},+ { XK_F5, /* F29 */ ControlMask, "\033[15;5~", 0, 0},+ { XK_F5, /* F41 */ Mod4Mask, "\033[15;6~", 0, 0},+ { XK_F5, /* F53 */ Mod1Mask, "\033[15;3~", 0, 0},+ { XK_F6, XK_NO_MOD, "\033[17~", 0, 0},+ { XK_F6, /* F18 */ ShiftMask, "\033[17;2~", 0, 0},+ { XK_F6, /* F30 */ ControlMask, "\033[17;5~", 0, 0},+ { XK_F6, /* F42 */ Mod4Mask, "\033[17;6~", 0, 0},+ { XK_F6, /* F54 */ Mod1Mask, "\033[17;3~", 0, 0},+ { XK_F7, XK_NO_MOD, "\033[18~", 0, 0},+ { XK_F7, /* F19 */ ShiftMask, "\033[18;2~", 0, 0},+ { XK_F7, /* F31 */ ControlMask, "\033[18;5~", 0, 0},+ { XK_F7, /* F43 */ Mod4Mask, "\033[18;6~", 0, 0},+ { XK_F7, /* F55 */ Mod1Mask, "\033[18;3~", 0, 0},+ { XK_F8, XK_NO_MOD, "\033[19~", 0, 0},+ { XK_F8, /* F20 */ ShiftMask, "\033[19;2~", 0, 0},+ { XK_F8, /* F32 */ ControlMask, "\033[19;5~", 0, 0},+ { XK_F8, /* F44 */ Mod4Mask, "\033[19;6~", 0, 0},+ { XK_F8, /* F56 */ Mod1Mask, "\033[19;3~", 0, 0},+ { XK_F9, XK_NO_MOD, "\033[20~", 0, 0},+ { XK_F9, /* F21 */ ShiftMask, "\033[20;2~", 0, 0},+ { XK_F9, /* F33 */ ControlMask, "\033[20;5~", 0, 0},+ { XK_F9, /* F45 */ Mod4Mask, "\033[20;6~", 0, 0},+ { XK_F9, /* F57 */ Mod1Mask, "\033[20;3~", 0, 0},+ { XK_F10, XK_NO_MOD, "\033[21~", 0, 0},+ { XK_F10, /* F22 */ ShiftMask, "\033[21;2~", 0, 0},+ { XK_F10, /* F34 */ ControlMask, "\033[21;5~", 0, 0},+ { XK_F10, /* F46 */ Mod4Mask, "\033[21;6~", 0, 0},+ { XK_F10, /* F58 */ Mod1Mask, "\033[21;3~", 0, 0},+ { XK_F11, XK_NO_MOD, "\033[23~", 0, 0},+ { XK_F11, /* F23 */ ShiftMask, "\033[23;2~", 0, 0},+ { XK_F11, /* F35 */ ControlMask, "\033[23;5~", 0, 0},+ { XK_F11, /* F47 */ Mod4Mask, "\033[23;6~", 0, 0},+ { XK_F11, /* F59 */ Mod1Mask, "\033[23;3~", 0, 0},+ { XK_F12, XK_NO_MOD, "\033[24~", 0, 0},+ { XK_F12, /* F24 */ ShiftMask, "\033[24;2~", 0, 0},+ { XK_F12, /* F36 */ ControlMask, "\033[24;5~", 0, 0},+ { XK_F12, /* F48 */ Mod4Mask, "\033[24;6~", 0, 0},+ { XK_F12, /* F60 */ Mod1Mask, "\033[24;3~", 0, 0},+ { XK_F13, XK_NO_MOD, "\033[1;2P", 0, 0},+ { XK_F14, XK_NO_MOD, "\033[1;2Q", 0, 0},+ { XK_F15, XK_NO_MOD, "\033[1;2R", 0, 0},+ { XK_F16, XK_NO_MOD, "\033[1;2S", 0, 0},+ { XK_F17, XK_NO_MOD, "\033[15;2~", 0, 0},+ { XK_F18, XK_NO_MOD, "\033[17;2~", 0, 0},+ { XK_F19, XK_NO_MOD, "\033[18;2~", 0, 0},+ { XK_F20, XK_NO_MOD, "\033[19;2~", 0, 0},+ { XK_F21, XK_NO_MOD, "\033[20;2~", 0, 0},+ { XK_F22, XK_NO_MOD, "\033[21;2~", 0, 0},+ { XK_F23, XK_NO_MOD, "\033[23;2~", 0, 0},+ { XK_F24, XK_NO_MOD, "\033[24;2~", 0, 0},+ { XK_F25, XK_NO_MOD, "\033[1;5P", 0, 0},+ { XK_F26, XK_NO_MOD, "\033[1;5Q", 0, 0},+ { XK_F27, XK_NO_MOD, "\033[1;5R", 0, 0},+ { XK_F28, XK_NO_MOD, "\033[1;5S", 0, 0},+ { XK_F29, XK_NO_MOD, "\033[15;5~", 0, 0},+ { XK_F30, XK_NO_MOD, "\033[17;5~", 0, 0},+ { XK_F31, XK_NO_MOD, "\033[18;5~", 0, 0},+ { XK_F32, XK_NO_MOD, "\033[19;5~", 0, 0},+ { XK_F33, XK_NO_MOD, "\033[20;5~", 0, 0},+ { XK_F34, XK_NO_MOD, "\033[21;5~", 0, 0},+ { XK_F35, XK_NO_MOD, "\033[23;5~", 0, 0},+};
+
+/*
+ * Selection types' masks.
+ * Use the same masks as usual.
+ * Button1Mask is always unset, to make masks match between ButtonPress.
+ * ButtonRelease and MotionNotify.
+ * If no match is found, regular selection is used.
+ */
+static uint selmasks[] = {+ [SEL_RECTANGULAR] = Mod1Mask,
+};
+
+/*
+ * Printable characters in ASCII, used to estimate the advance width
+ * of single wide characters.
+ */
+static char ascii_printable[] =
+ " !\"#$%&'()*+,-./0123456789:;<=>?"
+ "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+ "`abcdefghijklmnopqrstuvwxyz{|}~";--- /dev/null
+++ b/st.c
@@ -1,0 +1,2656 @@
+/* See LICENSE for license details. */
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#include "st.h"
+#include "win.h"
+
+#if defined(__linux)
+ #include <pty.h>
+#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+ #include <util.h>
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+ #include <libutil.h>
+#endif
+
+/* 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 '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
+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 [[ [<priv>] <arg> [;]] <mode>] 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]) ? 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 < 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()
+{+ /* 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 < 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 <n> blank char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tinsertblank(csiescseq.arg[0]);
+ break;
+ case 'A': /* CUU -- Cursor <n> Up */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
+ break;
+ case 'B': /* CUD -- Cursor <n> Down */
+ case 'e': /* VPR --Cursor <n> 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 <n> more times */
+ DEFAULT(csiescseq.arg[0], 1);
+ if (term.lastc)
+ while (csiescseq.arg[0]-- > 0)
+ tputc(term.lastc);
+ break;
+ case 'C': /* CUF -- Cursor <n> Forward */
+ case 'a': /* HPR -- Cursor <n> Forward */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
+ break;
+ case 'D': /* CUB -- Cursor <n> Backward */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
+ break;
+ case 'E': /* CNL -- Cursor <n> Down and first col */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(0, term.c.y+csiescseq.arg[0]);
+ break;
+ case 'F': /* CPL -- Cursor <n> 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 <col> */
+ case '`': /* HPA */
+ DEFAULT(csiescseq.arg[0], 1);
+ tmoveto(csiescseq.arg[0]-1, term.c.y);
+ break;
+ case 'H': /* CUP -- Move to <row> <col> */
+ 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 <n> 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 <n> line up */
+ DEFAULT(csiescseq.arg[0], 1);
+ tscrollup(term.top, csiescseq.arg[0]);
+ break;
+ case 'T': /* SD -- Scroll <n> line down */
+ DEFAULT(csiescseq.arg[0], 1);
+ tscrolldown(term.top, csiescseq.arg[0]);
+ break;
+ case 'L': /* IL -- Insert <n> 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 <n> lines */
+ DEFAULT(csiescseq.arg[0], 1);
+ tdeleteline(csiescseq.arg[0]);
+ break;
+ case 'X': /* ECH -- Erase <n> 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 <n> char */
+ DEFAULT(csiescseq.arg[0], 1);
+ tdeletechar(csiescseq.arg[0]);
+ break;
+ case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
+ DEFAULT(csiescseq.arg[0], 1);
+ tputtab(-csiescseq.arg[0]);
+ break;
+ case 'd': /* VPA -- Move to <row> */
+ 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)) {+ putc(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);
+ }
+ }
+ putc('\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 >= 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 >= 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') {+ putc('\n', stderr);+ return;
+ } else if (isprint(c)) {+ putc(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);
+ }
+ }
+ fprintf(stderr, "ESC\\\n");
+}
+
+void
+strreset(void)
+{+ strescseq = (STREscape){+ .buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
+ .siz = STR_BUF_SIZ,
+ };
+}
+
+void
+sendbreak(const Arg *arg)
+{+ if (tcsendbreak(cmdfd, 0))
+ perror("Error sending break");+}
+
+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)
+{+ uint 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) {+ if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {+ gp[2].u = ' ';
+ gp[2].mode &= ~ATTR_WDUMMY;
+ }
+ 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();
+}
--- /dev/null
+++ b/st.h
@@ -1,0 +1,126 @@
+/* See LICENSE for license details. */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+/* 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 sendbreak(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;
--- /dev/null
+++ b/win.h
@@ -1,0 +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);
--
⑨