Support wide Curses on MS-DOS

Also, fix IBMGraphics on Curses

sys/msdos/fonts/OFL.TXT

@@ -0,0 +1,94 @@
+Copyright (C) 2020 Dimitar Toshkov Zhekov,
+with Reserved Font Name "Terminus Font".
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

sys/msdos/fonts/README-fonts

@@ -0,0 +1,24 @@
+The following files are copied verbatim from the Terminus font package,
+version 4.49, available at https://sourceforge.net/projects/terminus-font/ .
+They are distributed under the SIL Open Font License, Version 1.1.
+
+* ter-u16b.bdf
+* ter-u16v.bdf
+* ter-u20b.bdf
+* ter-u24b.bdf
+* ter-u28b.bdf
+* ter-u32b.bdf
+
+The program makefont.rb is distributed under the NetHack license, and can be
+used to generate the binary font files. Because no port of Ruby is available
+for MS-DOS, the binary font files are provided precompiled. They are also
+distributed under the SIL Open Font License.
+
+* ter-u16b.psf
+* ter-u16v.psf
+* ter-u20b.psf
+* ter-u24b.psf
+* ter-u28b.psf
+* ter-u32b.psf
+
+OFL.TXT contains the text of the SIL Open Font License.

sys/msdos/fonts/makefont.rb

@@ -0,0 +1,177 @@
+#!/usr/bin/env ruby
+#   Copyright (c) 2016 Ray Chason
+#   NetHack may be freely redistributed.  See license for details.
+
+# Information about a single glyph in the font
+class Glyph
+
+    attr :width
+    attr :height
+    attr_accessor :bytes
+    attr_accessor :code
+
+    def initialize(width, height)
+        @width = width
+        @height = height
+        @bytes = ""
+        @code = []
+        bwidth = (width + 7) / 8
+    end
+
+end
+
+# This converts an unsigned integer to four little endian bytes
+def write_u32(x)
+    ([ x, (x >> 8), (x >> 16), (x >> 24) ].map {|x|
+        (x & 0xFF).chr(Encoding::ASCII_8BIT)
+    }).join('')
+end
+
+# IBM437 order as NetHack expects
+ibm437 = [
+    0x0000, 0x263A, 0x263B, 0x2665, 0x2666, 0x2663, 0x2660, 0x2022,
+    0x25D8, 0x25CB, 0x25D9, 0x2642, 0x2640, 0x266A, 0x266B, 0x263C,
+    0x25BA, 0x25C4, 0x2195, 0x203C, 0x00B6, 0x00A7, 0x25AC, 0x21A8,
+    0x2191, 0x2193, 0x2192, 0x2190, 0x221F, 0x2194, 0x25B2, 0x25BC,
+    0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+    0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+    0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+    0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+    0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+    0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+    0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+    0x0058, 0x0059, 0x005A, 0x005B, 0x005C, 0x005D, 0x005E, 0x005F,
+    0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+    0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+    0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+    0x0078, 0x0079, 0x007A, 0x007B, 0x007C, 0x007D, 0x007E, 0x2302,
+    0x00C7, 0x00FC, 0x00E9, 0x00E2, 0x00E4, 0x00E0, 0x00E5, 0x00E7,
+    0x00EA, 0x00EB, 0x00E8, 0x00EF, 0x00EE, 0x00EC, 0x00C4, 0x00C5,
+    0x00C9, 0x00E6, 0x00C6, 0x00F4, 0x00F6, 0x00F2, 0x00FB, 0x00F9,
+    0x00FF, 0x00D6, 0x00DC, 0x00A2, 0x00A3, 0x00A5, 0x20A7, 0x0192,
+    0x00E1, 0x00ED, 0x00F3, 0x00FA, 0x00F1, 0x00D1, 0x00AA, 0x00BA,
+    0x00BF, 0x2310, 0x00AC, 0x00BD, 0x00BC, 0x00A1, 0x00AB, 0x00BB,
+    0x2591, 0x2592, 0x2593, 0x2502, 0x2524, 0x2561, 0x2562, 0x2556,
+    0x2555, 0x2563, 0x2551, 0x2557, 0x255D, 0x255C, 0x255B, 0x2510,
+    0x2514, 0x2534, 0x252C, 0x251C, 0x2500, 0x253C, 0x255E, 0x255F,
+    0x255A, 0x2554, 0x2569, 0x2566, 0x2560, 0x2550, 0x256C, 0x2567,
+    0x2568, 0x2564, 0x2565, 0x2559, 0x2558, 0x2552, 0x2553, 0x256B,
+    0x256A, 0x2518, 0x250C, 0x2588, 0x2584, 0x258C, 0x2590, 0x2580,
+    0x03B1, 0x00DF, 0x0393, 0x03C0, 0x03A3, 0x03C3, 0x00B5, 0x03C4,
+    0x03A6, 0x0398, 0x03A9, 0x03B4, 0x221E, 0x03C6, 0x03B5, 0x2229,
+    0x2261, 0x00B1, 0x2265, 0x2264, 0x2320, 0x2321, 0x00F7, 0x2248,
+    0x00B0, 0x2219, 0x00B7, 0x221A, 0x207F, 0x00B2, 0x25A0, 0x00A0,
+]
+
+# As ibm437, but mapping Unicode back to the IBM437 position
+ibm437_rev = {}
+ibm437.size.times {|i| ibm437_rev[ibm437[i]] = i}
+
+# Variables to be used in the main loop
+font = [ nil ] * ibm437.size # Font position to glyph
+font_by_bytes = {}           # Bitmap string to font position
+font_by_code = {}            # Unicode code point to glyph
+width = nil
+height = nil
+bwidth = nil
+glyph = nil
+bitmap = false
+row = 0
+
+if ARGV.size != 2 then
+  	STDERR.puts "Usage: #{$0} <input-bdf> <output-psf>"
+    exit 1
+end
+
+File.foreach(ARGV[0]) do |line|
+    line.chomp!
+    if line.start_with?('FONTBOUNDINGBOX ') then
+        # Width and height of a glyph
+        rec = line.split
+        width = rec[1].to_i
+        height = rec[2].to_i
+        bwidth = (width + 7) / 8
+    elsif line.start_with?('STARTCHAR ') then
+        # A glyph begins here
+        glyph = Glyph.new(width, height)
+    elsif line.start_with?('ENCODING ') then
+        # This line provides the Unicode code point
+        rec = line.split
+        glyph.code << rec[1].to_i
+    elsif line.start_with?('BITMAP') then
+        # Bitmap data appears on following lines
+        bitmap = true
+        row = 0
+    elsif line.start_with?('ENDCHAR') then
+        # End of bitmap data
+        # Position will be according to IBM437 if the code point is in IBM437,
+        # else matching any prior occurrence if the same glyph has appeared
+        # before, else as a new glyph
+        pos = ibm437_rev[glyph.code[0]] || font_by_bytes[glyph.bytes] || font.size
+        if font[pos].nil? then
+            font[pos] = glyph
+            font_by_bytes[glyph.bytes] = pos
+        else
+            font[pos].code.concat(glyph.code)
+        end
+        font_by_code[glyph.code[0]] = pos
+        glyph = nil
+        bitmap = false
+    elsif bitmap then
+        # Hex data after BITMAP and before ENDCHAR
+        bwidth.times do |col|
+            byte = line[col*2..col*2+1].to_i(16).chr(Encoding::ASCII_8BIT)
+            glyph.bytes << byte
+        end
+        row += 1
+    end
+end
+
+# The provided BDFs code positions 16 and 17 differently from what NetHack
+# expects
+if font[ibm437_rev[0x25BA]].nil? and not font_by_code[0x25B6].nil? then
+    pos1 = font_by_code[0x25B6]
+    pos2 = ibm437_rev[0x25BA]
+    font[pos2] = font[pos1]
+    font[pos2].code << 0x25BA
+    font[pos1] = nil
+end
+if font[ibm437_rev[0x25C4]].nil? and not font_by_code[0x25C0].nil? then
+    pos1 = font_by_code[0x25C0]
+    pos2 = ibm437_rev[0x25C4]
+    font[pos2] = font[pos1]
+    font[pos2].code << 0x25C4
+    font[pos1] = nil
+end
+
+# Fill any empty slots; warn if within first 256
+i = 0
+while i < font.size do
+    if font[i].nil? then
+        puts "Position #{i} is empty" if i < ibm437.size
+        font[i] = font.pop
+    end
+    i += 1
+end
+
+File.open(ARGV[1], "wb") do |outfile|
+
+    # Write the PSF header
+    outfile.write("\x72\xB5\x4A\x86")           # magic
+    outfile.write(write_u32(0))                 # version
+    outfile.write(write_u32(32))                # headersize
+    outfile.write(write_u32(0x01))              # flags (Unicode table present)
+    outfile.write(write_u32(font.size))         # length
+    outfile.write(write_u32(bwidth * height))   # charsize
+    outfile.write(write_u32(height))            # height
+    outfile.write(write_u32(width))             # width
+
+    # Write the glyphs
+    font.each {|glyph| outfile.write(glyph.bytes)}
+
+    # Write the Unicode mappings
+    font.each do |glyph|
+        outfile.write((glyph.code.map {|x| x.chr(Encoding::UTF_8)}).join(''))
+        outfile.write(0xFF.chr(Encoding::ASCII_8BIT))
+    end
+end