summaryrefslogtreecommitdiff
path: root/ext/curses
diff options
context:
space:
mode:
Diffstat (limited to 'ext/curses')
-rw-r--r--ext/curses/MANIFEST6
-rw-r--r--ext/curses/curses.c725
-rw-r--r--ext/curses/extconf.rb21
-rw-r--r--ext/curses/hello.rb28
-rw-r--r--ext/curses/rain.rb76
-rw-r--r--ext/curses/view.rb90
6 files changed, 946 insertions, 0 deletions
diff --git a/ext/curses/MANIFEST b/ext/curses/MANIFEST
new file mode 100644
index 0000000000..db5e54ffe8
--- /dev/null
+++ b/ext/curses/MANIFEST
@@ -0,0 +1,6 @@
+MANIFEST
+curses.c
+extconf.rb
+hello.rb
+rain.rb
+view.rb
diff --git a/ext/curses/curses.c b/ext/curses/curses.c
new file mode 100644
index 0000000000..16ba90cff0
--- /dev/null
+++ b/ext/curses/curses.c
@@ -0,0 +1,725 @@
+/*
+ * ext/curses/curses.c
+ *
+ * by MAEDA Shugo (ender@pic-internet.or.jp)
+ * modified by Yukihiro Matsumoto (matz@ruby.club.or.jp)
+ */
+
+#ifdef HAVE_NCURSES_H
+# include <ncurses.h>
+#else
+# ifdef HAVE_NCURSES_CURSES_H
+# include <ncurses/curses.h>
+# else
+# include <curses.h>
+# if defined(__NetBSD__) && !defined(_maxx)
+# define _maxx maxx
+# endif
+# if defined(__NetBSD__) && !defined(_maxy)
+# define _maxy maxy
+# endif
+# endif
+#endif
+
+#include "ruby.h"
+
+static VALUE mCurses;
+static VALUE cWindow;
+
+VALUE rb_stdscr;
+
+struct windata {
+ WINDOW *window;
+};
+
+#define NUM2CHAR(x) (char)NUM2INT(x)
+#define CHAR2FIX(x) INT2FIX((int)x)
+
+static void
+no_window()
+{
+ Fail("already closed window");
+}
+
+#define GetWINDOW(obj, winp) {\
+ Data_Get_Struct(obj, struct windata, winp);\
+ if (winp->window == 0) no_window();\
+}
+
+static void
+curses_err()
+{
+ Fail("curses error");
+}
+
+#define CHECK(c) if ((c)==ERR) {curses_err();}
+
+static void
+free_window(struct windata *winp)
+{
+ if (winp->window && winp->window != stdscr) delwin(winp->window);
+ winp->window = 0;
+}
+
+static VALUE
+prep_window(VALUE class, WINDOW *window)
+{
+ VALUE obj;
+ struct windata *winp;
+
+ if (window == NULL) {
+ Fail("failed to create window");
+ }
+
+ obj = Data_Make_Struct(class, struct windata, 0, free_window, winp);
+ winp->window = window;
+
+ return obj;
+}
+
+/*-------------------------- module Curses --------------------------*/
+
+/* def init_screen */
+static VALUE
+curses_init_screen()
+{
+ initscr();
+ if (stdscr == 0) {
+ Fail("cannot initialize curses");
+ }
+ clear();
+ rb_stdscr = prep_window(cWindow, stdscr);
+ return Qnil;
+}
+
+/* def stdscr */
+static VALUE
+curses_stdscr()
+{
+ if (!rb_stdscr) curses_init_screen();
+ return rb_stdscr;
+}
+
+/* def close_screen */
+static VALUE
+curses_close_screen()
+{
+ CHECK(endwin());
+ return Qnil;
+}
+
+/* def closed? */
+static VALUE
+curses_closed()
+{
+#ifdef HAVE_ENDWIN
+ if (isendwin()) {
+ return TRUE;
+ }
+ return FALSE;
+#else
+ rb_notimplement();
+#endif
+}
+
+/* def clear */
+static VALUE
+curses_clear(VALUE obj)
+{
+ wclear(stdscr);
+ return Qnil;
+}
+
+/* def refresh */
+static VALUE
+curses_refresh(VALUE obj)
+{
+ CHECK(refresh());
+ return Qnil;
+}
+
+/* def refresh */
+static VALUE
+curses_doupdate(VALUE obj)
+{
+ CHECK(doupdate());
+ return Qnil;
+}
+
+/* def echo */
+static VALUE
+curses_echo(VALUE obj)
+{
+ CHECK(echo());
+ return Qnil;
+}
+
+/* def noecho */
+static VALUE
+curses_noecho(VALUE obj)
+{
+ CHECK(noecho());
+ return Qnil;
+}
+
+/* def raw */
+static VALUE
+curses_raw(VALUE obj)
+{
+ CHECK(raw());
+ return Qnil;
+}
+
+/* def noraw */
+static VALUE
+curses_noraw(VALUE obj)
+{
+ CHECK(noraw());
+ return Qnil;
+}
+
+/* def cbreak */
+static VALUE
+curses_cbreak(VALUE obj)
+{
+ CHECK(cbreak());
+ return Qnil;
+}
+
+/* def nocbreak */
+static VALUE
+curses_nocbreak(VALUE obj)
+{
+ CHECK(nocbreak());
+ return Qnil;
+}
+
+/* def nl */
+static VALUE
+curses_nl(VALUE obj)
+{
+ CHECK(nl());
+ return Qnil;
+}
+
+/* def nonl */
+static VALUE
+curses_nonl(VALUE obj)
+{
+ CHECK(nonl());
+ return Qnil;
+}
+
+/* def beep */
+static VALUE
+curses_beep(VALUE obj)
+{
+#ifdef HAVE_BEEP
+ beep();
+#endif
+ return Qnil;
+}
+
+/* def flash */
+static VALUE
+curses_flash(VALUE obj)
+{
+ flash();
+ return Qnil;
+}
+
+/* def ungetch */
+static VALUE
+curses_ungetch(VALUE obj, VALUE ch)
+{
+#ifdef HAVE_UNGETCH
+ CHECK(ungetch(NUM2INT(ch)));
+#else
+ rb_notimplement();
+#endif
+ return Qnil;
+}
+
+/* def setpos(y, x) */
+static VALUE
+curses_setpos(VALUE obj, VALUE y, VALUE x)
+{
+ CHECK(move(NUM2INT(y), NUM2INT(x)));
+ return Qnil;
+}
+
+/* def standout */
+static VALUE
+curses_standout(VALUE obj)
+{
+ standout();
+ return Qnil;
+}
+
+/* def standend */
+static VALUE
+curses_standend(VALUE obj)
+{
+ standend();
+ return Qnil;
+}
+
+/* def inch */
+static VALUE
+curses_inch(VALUE obj)
+{
+ return CHAR2FIX(inch());
+}
+
+/* def addch(ch) */
+static VALUE
+curses_addch(VALUE obj, VALUE ch)
+{
+ CHECK(addch(NUM2CHAR(ch)));
+ return Qnil;
+}
+
+/* def insch(ch) */
+static VALUE
+curses_insch(VALUE obj, VALUE ch)
+{
+ CHECK(insch(NUM2CHAR(ch)));
+ return Qnil;
+}
+
+/* def addstr(str) */
+static VALUE
+curses_addstr(VALUE obj, VALUE str)
+{
+ addstr(RSTRING(str)->ptr);
+ return Qnil;
+}
+
+/* def getch */
+static VALUE
+curses_getch(VALUE obj)
+{
+ return CHAR2FIX(getch());
+}
+
+/* def getstr */
+static VALUE
+curses_getstr(VALUE obj)
+{
+ char rtn[1024]; /* This should be big enough.. I hope */
+ CHECK(getstr(rtn));
+ return str_taint(str_new2(rtn));
+}
+
+/* def delch */
+static VALUE
+curses_delch(VALUE obj)
+{
+ CHECK(delch());
+ return Qnil;
+}
+
+/* def delelteln */
+static VALUE
+curses_deleteln(VALUE obj)
+{
+ CHECK(deleteln());
+ return Qnil;
+}
+
+static VALUE
+curses_lines()
+{
+ return INT2FIX(LINES);
+}
+
+static VALUE
+curses_cols()
+{
+ return INT2FIX(COLS);
+}
+
+/*-------------------------- class Window --------------------------*/
+
+/* def new(lines, cols, top, left) */
+static VALUE
+window_s_new(VALUE class,
+ VALUE lines, VALUE cols,
+ VALUE top, VALUE left)
+{
+ WINDOW *window;
+
+ window = newwin(NUM2INT(lines), NUM2INT(cols), NUM2INT(top), NUM2INT(left));
+ wclear(window);
+ return prep_window(class, window);
+}
+
+/* def subwin(lines, cols, top, left) */
+static VALUE
+window_subwin(VALUE obj,
+ VALUE lines, VALUE cols,
+ VALUE top, VALUE left)
+{
+ struct windata *winp;
+ WINDOW *window;
+
+ GetWINDOW(obj, winp);
+ window = subwin(winp->window, NUM2INT(lines), NUM2INT(cols),
+ NUM2INT(top), NUM2INT(left));
+ return prep_window(cWindow, window);
+}
+
+/* def close */
+static VALUE
+window_close(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ free_window(winp);
+
+ return Qnil;
+}
+
+/* def clear */
+static VALUE
+window_clear(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ wclear(winp->window);
+
+ return Qnil;
+}
+
+/* def refresh */
+static VALUE
+window_refresh(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(wrefresh(winp->window));
+
+ return Qnil;
+}
+
+/* def box(vert, hor) */
+static VALUE
+window_box(VALUE obj, VALUE vert, VALUE hor)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ box(winp->window, NUM2CHAR(vert), NUM2CHAR(hor));
+
+ return Qnil;
+}
+
+
+/* def move(y, x) */
+static VALUE
+window_move(VALUE obj, VALUE y, VALUE x)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(mvwin(winp->window, NUM2INT(y), NUM2INT(x)));
+
+ return Qnil;
+}
+
+/* def setpos(y, x) */
+static VALUE
+window_setpos(VALUE obj, VALUE y, VALUE x)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(wmove(winp->window, NUM2INT(y), NUM2INT(x)));
+ return Qnil;
+}
+
+/* def cury */
+static VALUE
+window_cury(VALUE obj)
+{
+ struct windata *winp;
+ int x, y;
+
+ GetWINDOW(obj, winp);
+ getyx(winp->window, y, x);
+ return INT2FIX(y);
+}
+
+/* def curx */
+static VALUE
+window_curx(VALUE obj)
+{
+ struct windata *winp;
+ int x, y;
+
+ GetWINDOW(obj, winp);
+ getyx(winp->window, y, x);
+ return INT2FIX(x);
+}
+
+/* def maxy */
+static VALUE
+window_maxy(VALUE obj)
+{
+ struct windata *winp;
+ int x, y;
+
+ GetWINDOW(obj, winp);
+#ifdef getmaxy
+ return INT2FIX(getmaxy(winp->window));
+#else
+#ifdef getmaxyx
+ getmaxyx(winp->window, y, x);
+ return INT2FIX(y);
+#else
+ return INT2FIX(winp->window->_maxy+1);
+#endif
+#endif
+}
+
+/* def maxx */
+static VALUE
+window_maxx(VALUE obj)
+{
+ struct windata *winp;
+ int x, y;
+
+ GetWINDOW(obj, winp);
+#ifdef getmaxx
+ return INT2FIX(getmaxx(winp->window));
+#else
+#ifdef getmaxyx
+ getmaxyx(winp->window, y, x);
+ return INT2FIX(x);
+#else
+ return INT2FIX(winp->window->_maxx+1);
+#endif
+#endif
+}
+
+/* def begy */
+static VALUE
+window_begy(VALUE obj)
+{
+ struct windata *winp;
+ int x, y;
+
+ GetWINDOW(obj, winp);
+#ifdef getbegyx
+ getbegyx(winp->window, y, x);
+ return INT2FIX(y);
+#else
+ return INT2FIX(winp->window->_begy);
+#endif
+}
+
+/* def begx */
+static VALUE
+window_begx(VALUE obj)
+{
+ struct windata *winp;
+ int x, y;
+
+ GetWINDOW(obj, winp);
+#ifdef getbegyx
+ getbegyx(winp->window, y, x);
+ return INT2FIX(x);
+#else
+ return INT2FIX(winp->window->_begx);
+#endif
+}
+
+/* def standout */
+static VALUE
+window_standout(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ wstandout(winp->window);
+ return Qnil;
+}
+
+/* def standend */
+static VALUE
+window_standend(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ wstandend(winp->window);
+ return Qnil;
+}
+
+/* def inch */
+static VALUE
+window_inch(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ return CHAR2FIX(winch(winp->window));
+}
+
+/* def addch(ch) */
+static VALUE
+window_addch(VALUE obj, VALUE ch)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(waddch(winp->window, NUM2CHAR(ch)));
+
+ return Qnil;
+}
+
+/* def insch(ch) */
+static VALUE
+window_insch(VALUE obj, VALUE ch)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(winsch(winp->window, NUM2CHAR(ch)));
+
+ return Qnil;
+}
+
+/* def addstr(str) */
+static VALUE
+window_addstr(VALUE obj, VALUE str)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(waddstr(winp->window, RSTRING(str)->ptr));
+
+ return Qnil;
+}
+
+/* def <<(str) */
+static VALUE
+window_addstr2(VALUE obj, VALUE str)
+{
+ window_addstr(obj, str);
+ return obj;
+}
+
+/* def getch */
+static VALUE
+window_getch(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ return CHAR2FIX(wgetch(winp->window));
+}
+
+/* def getstr */
+static VALUE
+window_getstr(VALUE obj)
+{
+ struct windata *winp;
+ char rtn[1024]; /* This should be big enough.. I hope */
+
+ GetWINDOW(obj, winp);
+ CHECK(wgetstr(winp->window, rtn));
+ return str_taint(str_new2(rtn));
+}
+
+/* def delch */
+static VALUE
+window_delch(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(wdelch(winp->window));
+ return Qnil;
+}
+
+/* def delelteln */
+static VALUE
+window_deleteln(VALUE obj)
+{
+ struct windata *winp;
+
+ GetWINDOW(obj, winp);
+ CHECK(wdeleteln(winp->window));
+ return Qnil;
+}
+
+/*------------------------- Initialization -------------------------*/
+void
+Init_curses()
+{
+ mCurses = rb_define_module("Curses");
+ rb_define_module_function(mCurses, "init_screen", curses_init_screen, 0);
+ rb_define_module_function(mCurses, "close_screen", curses_close_screen, 0);
+ rb_define_module_function(mCurses, "closed?", curses_closed, 0);
+ rb_define_module_function(mCurses, "stdscr", curses_stdscr, 0);
+ rb_define_module_function(mCurses, "refresh", curses_refresh, 0);
+ rb_define_module_function(mCurses, "doupdate", curses_doupdate, 0);
+ rb_define_module_function(mCurses, "clear", curses_clear, 0);
+ rb_define_module_function(mCurses, "echo", curses_echo, 0);
+ rb_define_module_function(mCurses, "noecho", curses_noecho, 0);
+ rb_define_module_function(mCurses, "raw", curses_raw, 0);
+ rb_define_module_function(mCurses, "noraw", curses_noraw, 0);
+ rb_define_module_function(mCurses, "cbreak", curses_cbreak, 0);
+ rb_define_module_function(mCurses, "nocbreak", curses_nocbreak, 0);
+ rb_define_alias(mCurses, "crmode", "cbreak");
+ rb_define_alias(mCurses, "nocrmode", "nocbreak");
+ rb_define_module_function(mCurses, "nl", curses_nl, 0);
+ rb_define_module_function(mCurses, "nonl", curses_nonl, 0);
+ rb_define_module_function(mCurses, "beep", curses_beep, 0);
+ rb_define_module_function(mCurses, "flash", curses_flash, 0);
+ rb_define_module_function(mCurses, "ungetch", curses_ungetch, 1);
+ rb_define_module_function(mCurses, "setpos", curses_setpos, 2);
+ rb_define_module_function(mCurses, "standout", curses_standout, 0);
+ rb_define_module_function(mCurses, "standend", curses_standend, 0);
+ rb_define_module_function(mCurses, "inch", curses_inch, 0);
+ rb_define_module_function(mCurses, "addch", curses_addch, 1);
+ rb_define_module_function(mCurses, "insch", curses_insch, 1);
+ rb_define_module_function(mCurses, "addstr", curses_addstr, 1);
+ rb_define_module_function(mCurses, "getch", curses_getch, 0);
+ rb_define_module_function(mCurses, "getstr", curses_getstr, 0);
+ rb_define_module_function(mCurses, "delch", curses_delch, 0);
+ rb_define_module_function(mCurses, "deleteln", curses_deleteln, 0);
+ rb_define_module_function(mCurses, "lines", curses_lines, 0);
+ rb_define_module_function(mCurses, "cols", curses_cols, 0);
+
+ cWindow = rb_define_class_under(mCurses, "Window", cObject);
+ rb_define_singleton_method(cWindow, "new", window_s_new, 4);
+ rb_define_method(cWindow, "subwin", window_subwin, 4);
+ rb_define_method(cWindow, "close", window_close, 0);
+ rb_define_method(cWindow, "clear", window_clear, 0);
+ rb_define_method(cWindow, "refresh", window_refresh, 0);
+ rb_define_method(cWindow, "box", window_box, 2);
+ rb_define_method(cWindow, "move", window_move, 2);
+ rb_define_method(cWindow, "setpos", window_setpos, 2);
+ rb_define_method(cWindow, "cury", window_cury, 0);
+ rb_define_method(cWindow, "curx", window_curx, 0);
+ rb_define_method(cWindow, "maxy", window_maxy, 0);
+ rb_define_method(cWindow, "maxx", window_maxx, 0);
+ rb_define_method(cWindow, "begy", window_begy, 0);
+ rb_define_method(cWindow, "begx", window_begx, 0);
+ rb_define_method(cWindow, "standout", window_standout, 0);
+ rb_define_method(cWindow, "standend", window_standend, 0);
+ rb_define_method(cWindow, "inch", window_inch, 0);
+ rb_define_method(cWindow, "addch", window_addch, 1);
+ rb_define_method(cWindow, "insch", window_insch, 1);
+ rb_define_method(cWindow, "addstr", window_addstr, 1);
+ rb_define_method(cWindow, "<<", window_addstr2, 1);
+ rb_define_method(cWindow, "getch", window_getch, 0);
+ rb_define_method(cWindow, "getstr", window_getstr, 0);
+ rb_define_method(cWindow, "delch", window_delch, 0);
+ rb_define_method(cWindow, "deleteln", window_deleteln, 0);
+}
diff --git a/ext/curses/extconf.rb b/ext/curses/extconf.rb
new file mode 100644
index 0000000000..22b1e2f0cc
--- /dev/null
+++ b/ext/curses/extconf.rb
@@ -0,0 +1,21 @@
+$CFLAGS="-I/usr/include/ncurses -I/usr/local/include/ncurses"
+$LDFLAGS="-L/usr/local/lib"
+make=FALSE
+if have_header("ncurses.h") and have_library("ncurses", "initscr")
+ make=TRUE
+elsif have_header("ncurses/curses.h") and have_library("ncurses", "initscr")
+ make=TRUE
+else
+ $CFLAGS=nil
+ have_library("termcap", "tparam")
+ if have_library("curses", "initscr")
+ make=TRUE
+ end
+end
+
+if make then
+ for f in ["isendwin", "ungetch", "beep"]
+ have_func(f)
+ end
+ create_makefile("curses")
+end
diff --git a/ext/curses/hello.rb b/ext/curses/hello.rb
new file mode 100644
index 0000000000..bed7779aac
--- /dev/null
+++ b/ext/curses/hello.rb
@@ -0,0 +1,28 @@
+#!/usr/local/bin/ruby
+
+require "curses"
+include Curses
+
+def show_message(message)
+ width = message.length + 6
+ win = Window.new(5, width,
+ (lines - 5) / 2, (cols - width) / 2)
+ win.box(?|, ?=)
+ win.setpos(2, 3)
+ win.addstr(message)
+ win.getch
+ win.close
+end
+
+init_screen
+begin
+ crmode
+# show_message("Hit any key")
+ setpos (lines - 5) / 2, (cols - 10) / 2
+ addstr("Hit any key")
+ getch
+ show_message("Hello, World!")
+ refresh
+ensure
+ close_screen
+end
diff --git a/ext/curses/rain.rb b/ext/curses/rain.rb
new file mode 100644
index 0000000000..36f0f84de2
--- /dev/null
+++ b/ext/curses/rain.rb
@@ -0,0 +1,76 @@
+#!/usr/local/bin/ruby
+# rain for a curses test
+
+require "curses"
+include Curses
+
+def onsig(sig)
+ close_screen
+ exit sig
+end
+
+def ranf
+ rand(32767).to_f / 32767
+end
+
+# main #
+for i in 1 .. 15 # SIGHUP .. SIGTERM
+ if trap(i, "SIG_IGN") != 0 then # 0 for SIG_IGN
+ trap(i) {|sig| onsig(sig) }
+ end
+end
+
+init_screen
+nl
+noecho
+srand
+
+xpos = {}
+ypos = {}
+r = lines - 4
+c = cols - 4
+for i in 0 .. 4
+ xpos[i] = (c * ranf).to_i + 2
+ ypos[i] = (r * ranf).to_i + 2
+end
+
+i = 0
+while TRUE
+ x = (c * ranf).to_i + 2
+ y = (r * ranf).to_i + 2
+
+
+ setpos(y, x); addstr(".")
+
+ setpos(ypos[i], xpos[i]); addstr("o")
+
+ i = if i == 0 then 4 else i - 1 end
+ setpos(ypos[i], xpos[i]); addstr("O")
+
+ i = if i == 0 then 4 else i - 1 end
+ setpos(ypos[i] - 1, xpos[i]); addstr("-")
+ setpos(ypos[i], xpos[i] - 1); addstr("|.|")
+ setpos(ypos[i] + 1, xpos[i]); addstr("-")
+
+ i = if i == 0 then 4 else i - 1 end
+ setpos(ypos[i] - 2, xpos[i]); addstr("-")
+ setpos(ypos[i] - 1, xpos[i] - 1); addstr("/ \\")
+ setpos(ypos[i], xpos[i] - 2); addstr("| O |")
+ setpos(ypos[i] + 1, xpos[i] - 1); addstr("\\ /")
+ setpos(ypos[i] + 2, xpos[i]); addstr("-")
+
+ i = if i == 0 then 4 else i - 1 end
+ setpos(ypos[i] - 2, xpos[i]); addstr(" ")
+ setpos(ypos[i] - 1, xpos[i] - 1); addstr(" ")
+ setpos(ypos[i], xpos[i] - 2); addstr(" ")
+ setpos(ypos[i] + 1, xpos[i] - 1); addstr(" ")
+ setpos(ypos[i] + 2, xpos[i]); addstr(" ")
+
+
+ xpos[i] = x
+ ypos[i] = y
+ refresh
+ sleep(0.5)
+end
+
+# end of main
diff --git a/ext/curses/view.rb b/ext/curses/view.rb
new file mode 100644
index 0000000000..e59a74ed44
--- /dev/null
+++ b/ext/curses/view.rb
@@ -0,0 +1,90 @@
+#!/usr/local/bin/ruby
+
+require "curses"
+include Curses
+
+#
+# main
+#
+
+if ARGV.size != 1 then
+ printf("usage: view file\n");
+ exit
+end
+begin
+ fp = open(ARGV[0], "r")
+rescue
+ raise "cannot open file: #{ARGV[1]}"
+end
+
+# signal(SIGINT, finish)
+
+init_screen
+#keypad(stdscr, TRUE)
+nonl
+cbreak
+noecho
+#scrollok(stdscr, TRUE)
+
+# slurp the file
+data_lines = []
+fp.each_line { |l|
+ data_lines.push(l)
+}
+fp.close
+
+
+lptr = 0
+while TRUE
+ i = 0
+ while i < lines
+ setpos(i, 0)
+ #clrtoeol
+ addstr(data_lines[lptr + i]) #if data_lines[lptr + i]
+ i += 1
+ end
+
+ explicit = FALSE
+ n = 0
+ while TRUE
+ c = getch.chr
+ if c =~ "[0-9]" then
+ n = 10 * n + c.to_i
+ else
+ break
+ end
+ end
+
+ n = 1 if !explicit && n == 0
+
+ case c
+ when "n" #when KEY_DOWN
+ i = 0
+ while i < n
+ if lptr + lines < data_lines.size then
+ lptr += 1
+ else
+ break
+ end
+ i += 1
+ end
+ #wscrl(i)
+
+ when "p" #when KEY_UP
+ i = 0
+ while i < n
+ if lptr > 0 then
+ lptr -= 1
+ else
+ break
+ end
+ i += 1
+ end
+ #wscrl(-i)
+
+ when "q"
+ break
+ end
+
+end
+close_screen
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 07:04:09 +0000