view src/hardcopy.c @ 32936:c517845bd10e v9.0.1776

patch 9.0.1776: No support for stable Python 3 ABI Commit: https://github.com/vim/vim/commit/c13b3d1350b60b94fe87f0761ea31c0e7fb6ebf3 Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Sun Aug 20 21:18:38 2023 +0200 patch 9.0.1776: No support for stable Python 3 ABI Problem: No support for stable Python 3 ABI Solution: Support Python 3 stable ABI Commits: 1) Support Python 3 stable ABI to allow mixed version interoperatbility Vim currently supports embedding Python for use with plugins, and the "dynamic" linking option allows the user to specify a locally installed version of Python by setting `pythonthreedll`. However, one caveat is that the Python 3 libs are not binary compatible across minor versions, and mixing versions can potentially be dangerous (e.g. let's say Vim was linked against the Python 3.10 SDK, but the user sets `pythonthreedll` to a 3.11 lib). Usually, nothing bad happens, but in theory this could lead to crashes, memory corruption, and other unpredictable behaviors. It's also difficult for the user to tell something is wrong because Vim has no way of reporting what Python 3 version Vim was linked with. For Vim installed via a package manager, this usually isn't an issue because all the dependencies would already be figured out. For prebuilt Vim binaries like MacVim (my motivation for working on this), AppImage, and Win32 installer this could potentially be an issue as usually a single binary is distributed. This is more tricky when a new Python version is released, as there's a chicken-and-egg issue with deciding what Python version to build against and hard to keep in sync when a new Python version just drops and we have a mix of users of different Python versions, and a user just blindly upgrading to a new Python could lead to bad interactions with Vim. Python 3 does have a solution for this problem: stable ABI / limited API (see https://docs.python.org/3/c-api/stable.html). The C SDK limits the API to a set of functions that are promised to be stable across versions. This pull request adds an ifdef config that allows us to turn it on when building Vim. Vim binaries built with this option should be safe to freely link with any Python 3 libraies without having the constraint of having to use the same minor version. Note: Python 2 has no such concept and this doesn't change how Python 2 integration works (not that there is going to be a new version of Python 2 that would cause compatibility issues in the future anyway). --- Technical details: ====== The stable ABI can be accessed when we compile with the Python 3 limited API (by defining `Py_LIMITED_API`). The Python 3 code (in `if_python3.c` and `if_py_both.h`) would now handle this and switch to limited API mode. Without it set, Vim will still use the full API as before so this is an opt-in change. The main difference is that `PyType_Object` is now an opaque struct that we can't directly create "static types" out of, and we have to create type objects as "heap types" instead. This is because the struct is not stable and changes from version to version (e.g. 3.8 added a `tp_vectorcall` field to it). I had to change all the types to be allocated on the heap instead with just a pointer to them. Other functions are also simply missing in limited API, or they are introduced too late (e.g. `PyUnicode_AsUTF8AndSize` in 3.10) to it that we need some other ways to do the same thing, so I had to abstract a few things into macros, and sometimes re-implement functions like `PyObject_NEW`. One caveat is that in limited API, `OutputType` (used for replacing `sys.stdout`) no longer inherits from `PyStdPrinter_Type` which I don't think has any real issue other than minor differences in how they convert to a string and missing a couple functions like `mode()` and `fileno()`. Also fixed an existing bug where `tp_basicsize` was set incorrectly for `BufferObject`, `TabListObject, `WinListObject`. Technically, there could be a small performance drop, there is a little more indirection with accessing type objects, and some APIs like `PyUnicode_AsUTF8AndSize` are missing, but in practice I didn't see any difference, and any well-written Python plugin should try to avoid excessing callbacks to the `vim` module in Python anyway. I only tested limited API mode down to Python 3.7, which seemes to compile and work fine. I haven't tried earlier Python versions. 2) Fix PyIter_Check on older Python vers / type##Ptr unused warning For PyIter_Check, older versions exposed them as either macros (used in full API), or a function (for use in limited API). A previous change exposed PyIter_Check to the dynamic build because Python just moved it to function-only in 3.10 anyway. Because of that, just make sure we always grab the function in dynamic builds in earlier versions since that's what Python eventually did anyway. 3) Move Py_LIMITED_API define to configure script Can now use --with-python-stable-abi flag to customize what stable ABI version to target. Can also use an env var to do so as well. 4) Show +python/dyn-stable in :version, and allow has() feature query Not sure if the "/dyn-stable" suffix would break things, or whether we should do it another way. Or just don't show it in version and rely on has() feature checking. 5) Documentation first draft. Still need to implement v:python3_version 6) Fix PyIter_Check build breaks when compiling against Python 3.8 7) Add CI coverage stable ABI on Linux/Windows / make configurable on Windows This adds configurable options for Windows make files (both MinGW and MSVC). CI will also now exercise both traditional full API and stable ABI for Linux and Windows in the matrix for coverage. Also added a "dynamic" option to Linux matrix as a drive-by change to make other scripting languages like Ruby / Perl testable under both static and dynamic builds. 8) Fix inaccuracy in Windows docs Python's own docs are confusing but you don't actually want to use `python3.dll` for the dynamic linkage. 9) Add generated autoconf file 10) Add v:python3_version support This variable indicates the version of Python3 that Vim was built against (PY_VERSION_HEX), and will be useful to check whether the Python library you are loading in dynamically actually fits it. When built with stable ABI, it will be the limited ABI version instead (`Py_LIMITED_API`), which indicates the minimum version of Python 3 the user should have, rather than the exact match. When stable ABI is used, we won't be exposing PY_VERSION_HEX in this var because it just doesn't seem necessary to do so (the whole point of stable ABI is the promise that it will work across versions), and I don't want to confuse the user with too many variables. Also, cleaned up some documentation, and added help tags. 11) Fix Python 3.7 compat issues Fix a couple issues when using limited API < 3.8 - Crash on exit: In Python 3.7, if a heap-allocated type is destroyed before all instances are, it would cause a crash later. This happens when we destroyed `OptionsType` before calling `Py_Finalize` when using the limited API. To make it worse, later versions changed the semantics and now each instance has a strong reference to its own type and the recommendation has changed to have each instance de-ref its own type and have its type in GC traversal. To avoid dealing with these cross-version variations, we just don't free the heap type. They are static types in non-limited-API anyway and are designed to last through the entirety of the app, and we also don't restart the Python runtime and therefore do not need it to have absolutely 0 leaks. See: - https://docs.python.org/3/whatsnew/3.8.html#changes-in-the-c-api - https://docs.python.org/3/whatsnew/3.9.html#changes-in-the-c-api - PyIter_Check: This function is not provided in limited APIs older than 3.8. Previously I was trying to mock it out using manual PyType_GetSlot() but it was brittle and also does not actually work properly for static types (it will generate a Python error). Just return false. It does mean using limited API < 3.8 is not recommended as you lose the functionality to handle iterators, but from playing with plugins I couldn't find it to be an issue. - Fix loading of PyIter_Check so it will be done when limited API < 3.8. Otherwise loading a 3.7 Python lib will fail even if limited API was specified to use it. 12) Make sure to only load `PyUnicode_AsUTF8AndSize` in needed in limited API We don't use this function unless limited API >= 3.10, but we were loading it regardless. Usually it's ok in Unix-like systems where Python just has a single lib that we load from, but in Windows where there is a separate python3.dll this would not work as the symbol would not have been exposed in this more limited DLL file. This makes it much clearer under what condition is this function needed. closes: #12032 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
author Christian Brabandt <cb@256bit.org>
date Sun, 20 Aug 2023 21:30:04 +0200
parents 97255d909654
children 1629cc65d78d
line wrap: on
line source

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 * See README.txt for an overview of the Vim source code.
 */

/*
 * hardcopy.c: printing to paper
 */

#include "vim.h"
#include "version.h"

#if defined(FEAT_PRINTER) || defined(PROTO)
/*
 * To implement printing on a platform, the following functions must be
 * defined:
 *
 * int mch_print_init(prt_settings_T *psettings, char_u *jobname, int forceit)
 * Called once.  Code should display printer dialogue (if appropriate) and
 * determine printer font and margin settings.  Reset has_color if the printer
 * doesn't support colors at all.
 * Returns FAIL to abort.
 *
 * int mch_print_begin(prt_settings_T *settings)
 * Called to start the print job.
 * Return FALSE to abort.
 *
 * int mch_print_begin_page(char_u *msg)
 * Called at the start of each page.
 * "msg" indicates the progress of the print job, can be NULL.
 * Return FALSE to abort.
 *
 * int mch_print_end_page()
 * Called at the end of each page.
 * Return FALSE to abort.
 *
 * int mch_print_blank_page()
 * Called to generate a blank page for collated, duplex, multiple copy
 * document.  Return FALSE to abort.
 *
 * void mch_print_end(prt_settings_T *psettings)
 * Called at normal end of print job.
 *
 * void mch_print_cleanup()
 * Called if print job ends normally or is abandoned. Free any memory, close
 * devices and handles.  Also called when mch_print_begin() fails, but not
 * when mch_print_init() fails.
 *
 * void mch_print_set_font(int Bold, int Italic, int Underline);
 * Called whenever the font style changes.
 *
 * void mch_print_set_bg(long_u bgcol);
 * Called to set the background color for the following text. Parameter is an
 * RGB value.
 *
 * void mch_print_set_fg(long_u fgcol);
 * Called to set the foreground color for the following text. Parameter is an
 * RGB value.
 *
 * mch_print_start_line(int margin, int page_line)
 * Sets the current position at the start of line "page_line".
 * If margin is TRUE start in the left margin (for header and line number).
 *
 * int mch_print_text_out(char_u *p, int len);
 * Output one character of text p[len] at the current position.
 * Return TRUE if there is no room for another character in the same line.
 *
 * Note that the generic code has no idea of margins. The machine code should
 * simply make the page look smaller!  The header and the line numbers are
 * printed in the margin.
 */

#ifdef FEAT_SYN_HL
static const long_u  cterm_color_8[8] =
{
    (long_u)0x000000L, (long_u)0xff0000L, (long_u)0x00ff00L, (long_u)0xffff00L,
    (long_u)0x0000ffL, (long_u)0xff00ffL, (long_u)0x00ffffL, (long_u)0xffffffL
};

static const long_u  cterm_color_16[16] =
{
    (long_u)0x000000L, (long_u)0x0000c0L, (long_u)0x008000L, (long_u)0x004080L,
    (long_u)0xc00000L, (long_u)0xc000c0L, (long_u)0x808000L, (long_u)0xc0c0c0L,
    (long_u)0x808080L, (long_u)0x6060ffL, (long_u)0x00ff00L, (long_u)0x00ffffL,
    (long_u)0xff8080L, (long_u)0xff40ffL, (long_u)0xffff00L, (long_u)0xffffffL
};

static int		current_syn_id;
#endif

#define PRCOLOR_BLACK	(long_u)0
#define PRCOLOR_WHITE	(long_u)0xFFFFFFL

static int	curr_italic;
static int	curr_bold;
static int	curr_underline;
static long_u	curr_bg;
static long_u	curr_fg;
static int	page_count;

#if defined(FEAT_POSTSCRIPT)
# define OPT_MBFONT_USECOURIER  0
# define OPT_MBFONT_ASCII       1
# define OPT_MBFONT_REGULAR     2
# define OPT_MBFONT_BOLD	3
# define OPT_MBFONT_OBLIQUE     4
# define OPT_MBFONT_BOLDOBLIQUE 5
# define OPT_MBFONT_NUM_OPTIONS 6

static option_table_T mbfont_opts[OPT_MBFONT_NUM_OPTIONS] =
{
    {"c",	FALSE, 0, NULL, 0, FALSE},
    {"a",	FALSE, 0, NULL, 0, FALSE},
    {"r",	FALSE, 0, NULL, 0, FALSE},
    {"b",	FALSE, 0, NULL, 0, FALSE},
    {"i",	FALSE, 0, NULL, 0, FALSE},
    {"o",	FALSE, 0, NULL, 0, FALSE},
};
#endif

/*
 * These values determine the print position on a page.
 */
typedef struct
{
    int		lead_spaces;	    // remaining spaces for a TAB
    int		print_pos;	    // virtual column for computing TABs
    colnr_T	column;		    // byte column
    linenr_T	file_line;	    // line nr in the buffer
    long_u	bytes_printed;	    // bytes printed so far
    int		ff;		    // seen form feed character
} prt_pos_T;

static char *parse_list_options(char_u *option_str, option_table_T *table, int table_size);

static colnr_T hardcopy_line(prt_settings_T *psettings, int page_line, prt_pos_T *ppos);

/*
 * Parse 'printoptions' and set the flags in "printer_opts".
 * Returns an error message or NULL;
 */
    char *
parse_printoptions(optset_T *args UNUSED)
{
    return parse_list_options(p_popt, printer_opts, OPT_PRINT_NUM_OPTIONS);
}

#if defined(FEAT_POSTSCRIPT) || defined(PROTO)
/*
 * Parse 'printmbfont' and set the flags in "mbfont_opts".
 * Returns an error message or NULL;
 */
    char *
parse_printmbfont(optset_T *args UNUSED)
{
    return parse_list_options(p_pmfn, mbfont_opts, OPT_MBFONT_NUM_OPTIONS);
}
#endif

/*
 * Parse a list of options in the form
 * option:value,option:value,option:value
 *
 * "value" can start with a number which is parsed out, e.g.  margin:12mm
 *
 * Returns an error message for an illegal option, NULL otherwise.
 * Only used for the printer at the moment...
 */
    static char *
parse_list_options(
    char_u		*option_str,
    option_table_T	*table,
    int			table_size)
{
    option_table_T *old_opts;
    char	*ret = NULL;
    char_u	*stringp;
    char_u	*colonp;
    char_u	*commap;
    char_u	*p;
    int		idx = 0;		// init for GCC
    int		len;

    // Save the old values, so that they can be restored in case of an error.
    old_opts = ALLOC_MULT(option_table_T, table_size);
    if (old_opts == NULL)
	return NULL;

    for (idx = 0; idx < table_size; ++idx)
    {
	old_opts[idx] = table[idx];
	table[idx].present = FALSE;
    }

    /*
     * Repeat for all comma separated parts.
     */
    stringp = option_str;
    while (*stringp)
    {
	colonp = vim_strchr(stringp, ':');
	if (colonp == NULL)
	{
	    ret = e_missing_colon_3;
	    break;
	}
	commap = vim_strchr(stringp, ',');
	if (commap == NULL)
	    commap = option_str + STRLEN(option_str);

	len = (int)(colonp - stringp);

	for (idx = 0; idx < table_size; ++idx)
	    if (STRNICMP(stringp, table[idx].name, len) == 0)
		break;

	if (idx == table_size)
	{
	    ret = e_illegal_component;
	    break;
	}
	p = colonp + 1;
	table[idx].present = TRUE;

	if (table[idx].hasnum)
	{
	    if (!VIM_ISDIGIT(*p))
	    {
		ret = e_digit_expected_2;
		break;
	    }

	    table[idx].number = getdigits(&p); // advances p
	}

	table[idx].string = p;
	table[idx].strlen = (int)(commap - p);

	stringp = commap;
	if (*stringp == ',')
	    ++stringp;
    }

    if (ret != NULL)
    {
	// Restore old options in case of error
	for (idx = 0; idx < table_size; ++idx)
	    table[idx] = old_opts[idx];
    }
    vim_free(old_opts);
    return ret;
}


#ifdef FEAT_SYN_HL
/*
 * If using a dark background, the colors will probably be too bright to show
 * up well on white paper, so reduce their brightness.
 */
    static long_u
darken_rgb(long_u rgb)
{
    return	((rgb >> 17) << 16)
	    +	(((rgb & 0xff00) >> 9) << 8)
	    +	((rgb & 0xff) >> 1);
}

    static long_u
prt_get_term_color(int colorindex)
{
    // TODO: Should check for xterm with 88 or 256 colors.
    if (t_colors > 8)
	return cterm_color_16[colorindex % 16];
    return cterm_color_8[colorindex % 8];
}

    static void
prt_get_attr(
    int			hl_id,
    prt_text_attr_T	*pattr,
    int			modec)
{
    int     colorindex;
    long_u  fg_color;
    long_u  bg_color;
    char    *color;

    pattr->bold = (highlight_has_attr(hl_id, HL_BOLD, modec) != NULL);
    pattr->italic = (highlight_has_attr(hl_id, HL_ITALIC, modec) != NULL);
    pattr->underline = (highlight_has_attr(hl_id, HL_UNDERLINE, modec) != NULL);
    pattr->undercurl = (highlight_has_attr(hl_id, HL_UNDERCURL, modec) != NULL);
    // TODO: HL_UNDERDOUBLE, HL_UNDERDOTTED, HL_UNDERDASHED

# if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
    if (USE_24BIT)
    {
	bg_color = highlight_gui_color_rgb(hl_id, FALSE);
	if (bg_color == PRCOLOR_BLACK)
	    bg_color = PRCOLOR_WHITE;

	fg_color = highlight_gui_color_rgb(hl_id, TRUE);
    }
    else
# endif
    {
	bg_color = PRCOLOR_WHITE;

	color = (char *)highlight_color(hl_id, (char_u *)"fg", modec);
	if (color == NULL)
	    colorindex = 0;
	else
	    colorindex = atoi(color);

	if (colorindex >= 0 && colorindex < t_colors)
	    fg_color = prt_get_term_color(colorindex);
	else
	    fg_color = PRCOLOR_BLACK;
    }

    if (fg_color == PRCOLOR_WHITE)
	fg_color = PRCOLOR_BLACK;
    else if (*p_bg == 'd')
	fg_color = darken_rgb(fg_color);

    pattr->fg_color = fg_color;
    pattr->bg_color = bg_color;
}
#endif // FEAT_SYN_HL

    static void
prt_set_fg(long_u fg)
{
    if (fg == curr_fg)
	return;

    curr_fg = fg;
    mch_print_set_fg(fg);
}

    static void
prt_set_bg(long_u bg)
{
    if (bg == curr_bg)
	return;

    curr_bg = bg;
    mch_print_set_bg(bg);
}

    static void
prt_set_font(int bold, int italic, int underline)
{
    if (curr_bold == bold
	    && curr_italic == italic
	    && curr_underline == underline)
	return;

    curr_underline = underline;
    curr_italic = italic;
    curr_bold = bold;
    mch_print_set_font(bold, italic, underline);
}

/*
 * Print the line number in the left margin.
 */
    static void
prt_line_number(
    prt_settings_T *psettings,
    int		page_line,
    linenr_T	lnum)
{
    int		i;
    char_u	tbuf[20];

    prt_set_fg(psettings->number.fg_color);
    prt_set_bg(psettings->number.bg_color);
    prt_set_font(psettings->number.bold, psettings->number.italic, psettings->number.underline);
    mch_print_start_line(TRUE, page_line);

    // Leave two spaces between the number and the text; depends on
    // PRINT_NUMBER_WIDTH.
    sprintf((char *)tbuf, "%6ld", (long)lnum);
    for (i = 0; i < 6; i++)
	(void)mch_print_text_out(&tbuf[i], 1);

#ifdef FEAT_SYN_HL
    if (psettings->do_syntax)
	// Set colors for next character.
	current_syn_id = -1;
    else
#endif
    {
	// Set colors and font back to normal.
	prt_set_fg(PRCOLOR_BLACK);
	prt_set_bg(PRCOLOR_WHITE);
	prt_set_font(FALSE, FALSE, FALSE);
    }
}

/*
 * Get the currently effective header height.
 */
    int
prt_header_height(void)
{
    if (printer_opts[OPT_PRINT_HEADERHEIGHT].present)
	return printer_opts[OPT_PRINT_HEADERHEIGHT].number;
    return 2;
}

/*
 * Return TRUE if using a line number for printing.
 */
    int
prt_use_number(void)
{
    return (printer_opts[OPT_PRINT_NUMBER].present
	    && TOLOWER_ASC(printer_opts[OPT_PRINT_NUMBER].string[0]) == 'y');
}

/*
 * Return the unit used in a margin item in 'printoptions'.
 * Returns PRT_UNIT_NONE if not recognized.
 */
    int
prt_get_unit(int idx)
{
    int		u = PRT_UNIT_NONE;
    int		i;
    static char *(units[4]) = PRT_UNIT_NAMES;

    if (!printer_opts[idx].present)
	return PRT_UNIT_NONE;

    for (i = 0; i < 4; ++i)
	if (STRNICMP(printer_opts[idx].string, units[i], 2) == 0)
	{
	    u = i;
	    break;
	}
    return u;
}

/*
 * Print the page header.
 */
    static void
prt_header(
    prt_settings_T  *psettings,
    int		pagenum,
    linenr_T	lnum UNUSED)
{
    int		width = psettings->chars_per_line;
    int		page_line;
    char_u	*tbuf;
    char_u	*p;
    int		l;

    // Also use the space for the line number.
    if (prt_use_number())
	width += PRINT_NUMBER_WIDTH;

    tbuf = alloc(width + IOSIZE);
    if (tbuf == NULL)
	return;

#ifdef FEAT_STL_OPT
    if (*p_header != NUL)
    {
	linenr_T	tmp_lnum, tmp_topline, tmp_botline;

	/*
	 * Need to (temporarily) set current line number and first/last line
	 * number on the 'window'.  Since we don't know how long the page is,
	 * set the first and current line number to the top line, and guess
	 * that the page length is 64.
	 */
	tmp_lnum = curwin->w_cursor.lnum;
	tmp_topline = curwin->w_topline;
	tmp_botline = curwin->w_botline;
	curwin->w_cursor.lnum = lnum;
	curwin->w_topline = lnum;
	curwin->w_botline = lnum + 63;
	printer_page_num = pagenum;

	build_stl_str_hl(curwin, tbuf, (size_t)(width + IOSIZE), p_header,
			   (char_u *)"printheader", 0, ' ', width, NULL, NULL);

	// Reset line numbers
	curwin->w_cursor.lnum = tmp_lnum;
	curwin->w_topline = tmp_topline;
	curwin->w_botline = tmp_botline;
    }
    else
#endif
	sprintf((char *)tbuf, _("Page %d"), pagenum);

    prt_set_fg(PRCOLOR_BLACK);
    prt_set_bg(PRCOLOR_WHITE);
    prt_set_font(TRUE, FALSE, FALSE);

    // Use a negative line number to indicate printing in the top margin.
    page_line = 0 - prt_header_height();
    mch_print_start_line(TRUE, page_line);
    for (p = tbuf; *p != NUL; )
    {
	if (mch_print_text_out(p, (l = (*mb_ptr2len)(p))))
	{
	    ++page_line;
	    if (page_line >= 0) // out of room in header
		break;
	    mch_print_start_line(TRUE, page_line);
	}
	p += l;
    }

    vim_free(tbuf);

#ifdef FEAT_SYN_HL
    if (psettings->do_syntax)
	// Set colors for next character.
	current_syn_id = -1;
    else
#endif
    {
	// Set colors and font back to normal.
	prt_set_fg(PRCOLOR_BLACK);
	prt_set_bg(PRCOLOR_WHITE);
	prt_set_font(FALSE, FALSE, FALSE);
    }
}

/*
 * Display a print status message.
 */
    static void
prt_message(char_u *s)
{
    screen_fill((int)Rows - 1, (int)Rows, 0, (int)Columns, ' ', ' ', 0);
    screen_puts(s, (int)Rows - 1, 0, HL_ATTR(HLF_R));
    out_flush();
}

    void
ex_hardcopy(exarg_T *eap)
{
    linenr_T		lnum;
    int			collated_copies, uncollated_copies;
    prt_settings_T	settings;
    long_u		bytes_to_print = 0;
    int			page_line;
    int			jobsplit;

    CLEAR_FIELD(settings);
    settings.has_color = TRUE;

# ifdef FEAT_POSTSCRIPT
    if (*eap->arg == '>')
    {
	char	*errormsg = NULL;

	// Expand things like "%.ps".
	if (expand_filename(eap, eap->cmdlinep, &errormsg) == FAIL)
	{
	    if (errormsg != NULL)
		emsg(errormsg);
	    return;
	}
	settings.outfile = skipwhite(eap->arg + 1);
    }
    else if (*eap->arg != NUL)
	settings.arguments = eap->arg;
# endif

    /*
     * Initialise for printing.  Ask the user for settings, unless forceit is
     * set.
     * The mch_print_init() code should set up margins if applicable. (It may
     * not be a real printer - for example the engine might generate HTML or
     * PS.)
     */
    if (mch_print_init(&settings,
			curbuf->b_fname == NULL
			    ? buf_spname(curbuf)
			    : curbuf->b_sfname == NULL
				? curbuf->b_fname
				: curbuf->b_sfname,
			eap->forceit) == FAIL)
	return;

#ifdef FEAT_SYN_HL
# ifdef  FEAT_GUI
    if (gui.in_use)
	settings.modec = 'g';
    else
# endif
	if (t_colors > 1)
	    settings.modec = 'c';
	else
	    settings.modec = 't';

    if (!syntax_present(curwin))
	settings.do_syntax = FALSE;
    else if (printer_opts[OPT_PRINT_SYNTAX].present
	    && TOLOWER_ASC(printer_opts[OPT_PRINT_SYNTAX].string[0]) != 'a')
	settings.do_syntax =
	       (TOLOWER_ASC(printer_opts[OPT_PRINT_SYNTAX].string[0]) == 'y');
    else
	settings.do_syntax = settings.has_color;
#endif

    // Set up printing attributes for line numbers
    settings.number.fg_color = PRCOLOR_BLACK;
    settings.number.bg_color = PRCOLOR_WHITE;
    settings.number.bold = FALSE;
    settings.number.italic = TRUE;
    settings.number.underline = FALSE;
#ifdef FEAT_SYN_HL
    /*
     * Syntax highlighting of line numbers.
     */
    if (prt_use_number() && settings.do_syntax)
    {
	int		id;

	id = syn_name2id((char_u *)"LineNr");
	if (id > 0)
	    id = syn_get_final_id(id);

	prt_get_attr(id, &settings.number, settings.modec);
    }
#endif

    /*
     * Estimate the total lines to be printed
     */
    for (lnum = eap->line1; lnum <= eap->line2; lnum++)
	bytes_to_print += (long_u)STRLEN(skipwhite(ml_get(lnum)));
    if (bytes_to_print == 0)
    {
	msg(_("No text to be printed"));
	goto print_fail_no_begin;
    }

    // Set colors and font to normal.
    curr_bg = (long_u)0xffffffffL;
    curr_fg = (long_u)0xffffffffL;
    curr_italic = MAYBE;
    curr_bold = MAYBE;
    curr_underline = MAYBE;

    prt_set_fg(PRCOLOR_BLACK);
    prt_set_bg(PRCOLOR_WHITE);
    prt_set_font(FALSE, FALSE, FALSE);
#ifdef FEAT_SYN_HL
    current_syn_id = -1;
#endif

    jobsplit = (printer_opts[OPT_PRINT_JOBSPLIT].present
	   && TOLOWER_ASC(printer_opts[OPT_PRINT_JOBSPLIT].string[0]) == 'y');

    if (!mch_print_begin(&settings))
	goto print_fail_no_begin;

    /*
     * Loop over collated copies: 1 2 3, 1 2 3, ...
     */
    page_count = 0;
    for (collated_copies = 0;
	    collated_copies < settings.n_collated_copies;
	    collated_copies++)
    {
	prt_pos_T	prtpos;		// current print position
	prt_pos_T	page_prtpos;	// print position at page start
	int		side;

	CLEAR_FIELD(page_prtpos);
	page_prtpos.file_line = eap->line1;
	prtpos = page_prtpos;

	if (jobsplit && collated_copies > 0)
	{
	    // Splitting jobs: Stop a previous job and start a new one.
	    mch_print_end(&settings);
	    if (!mch_print_begin(&settings))
		goto print_fail_no_begin;
	}

	/*
	 * Loop over all pages in the print job: 1 2 3 ...
	 */
	for (page_count = 0; prtpos.file_line <= eap->line2; ++page_count)
	{
	    /*
	     * Loop over uncollated copies: 1 1 1, 2 2 2, 3 3 3, ...
	     * For duplex: 12 12 12 34 34 34, ...
	     */
	    for (uncollated_copies = 0;
		    uncollated_copies < settings.n_uncollated_copies;
		    uncollated_copies++)
	    {
		// Set the print position to the start of this page.
		prtpos = page_prtpos;

		/*
		 * Do front and rear side of a page.
		 */
		for (side = 0; side <= settings.duplex; ++side)
		{
		    /*
		     * Print one page.
		     */

		    // Check for interrupt character every page.
		    ui_breakcheck();
		    if (got_int || settings.user_abort)
			goto print_fail;

		    sprintf((char *)IObuff, _("Printing page %d (%d%%)"),
			    page_count + 1 + side,
			    prtpos.bytes_printed > 1000000
				? (int)(prtpos.bytes_printed /
						       (bytes_to_print / 100))
				: (int)((prtpos.bytes_printed * 100)
							   / bytes_to_print));
		    if (!mch_print_begin_page(IObuff))
			goto print_fail;

		    if (settings.n_collated_copies > 1)
			sprintf((char *)IObuff + STRLEN(IObuff),
				_(" Copy %d of %d"),
				collated_copies + 1,
				settings.n_collated_copies);
		    prt_message(IObuff);

		    /*
		     * Output header if required
		     */
		    if (prt_header_height() > 0)
			prt_header(&settings, page_count + 1 + side,
							prtpos.file_line);

		    for (page_line = 0; page_line < settings.lines_per_page;
								  ++page_line)
		    {
			prtpos.column = hardcopy_line(&settings,
							   page_line, &prtpos);
			if (prtpos.column == 0)
			{
			    // finished a file line
			    prtpos.bytes_printed +=
				  STRLEN(skipwhite(ml_get(prtpos.file_line)));
			    if (++prtpos.file_line > eap->line2)
				break; // reached the end
			}
			else if (prtpos.ff)
			{
			    // Line had a formfeed in it - start new page but
			    // stay on the current line
			    break;
			}
		    }

		    if (!mch_print_end_page())
			goto print_fail;
		    if (prtpos.file_line > eap->line2)
			break; // reached the end
		}

		/*
		 * Extra blank page for duplexing with odd number of pages and
		 * more copies to come.
		 */
		if (prtpos.file_line > eap->line2 && settings.duplex
								 && side == 0
		    && uncollated_copies + 1 < settings.n_uncollated_copies)
		{
		    if (!mch_print_blank_page())
			goto print_fail;
		}
	    }
	    if (settings.duplex && prtpos.file_line <= eap->line2)
		++page_count;

	    // Remember the position where the next page starts.
	    page_prtpos = prtpos;
	}

	vim_snprintf((char *)IObuff, IOSIZE, _("Printed: %s"),
							    settings.jobname);
	prt_message(IObuff);
    }

print_fail:
    if (got_int || settings.user_abort)
    {
	sprintf((char *)IObuff, "%s", _("Printing aborted"));
	prt_message(IObuff);
    }
    mch_print_end(&settings);

print_fail_no_begin:
    mch_print_cleanup();
}

/*
 * Print one page line.
 * Return the next column to print, or zero if the line is finished.
 */
    static colnr_T
hardcopy_line(
    prt_settings_T	*psettings,
    int			page_line,
    prt_pos_T		*ppos)
{
    colnr_T	col;
    char_u	*line;
    int		need_break = FALSE;
    int		outputlen;
    int		tab_spaces;
    long_u	print_pos;
#ifdef FEAT_SYN_HL
    prt_text_attr_T attr;
    int		id;
#endif

    if (ppos->column == 0 || ppos->ff)
    {
	print_pos = 0;
	tab_spaces = 0;
	if (!ppos->ff && prt_use_number())
	    prt_line_number(psettings, page_line, ppos->file_line);
	ppos->ff = FALSE;
    }
    else
    {
	// left over from wrap halfway a tab
	print_pos = ppos->print_pos;
	tab_spaces = ppos->lead_spaces;
    }

    mch_print_start_line(0, page_line);
    line = ml_get(ppos->file_line);

    /*
     * Loop over the columns until the end of the file line or right margin.
     */
    for (col = ppos->column; line[col] != NUL && !need_break; col += outputlen)
    {
	outputlen = 1;
	if (has_mbyte && (outputlen = (*mb_ptr2len)(line + col)) < 1)
	    outputlen = 1;
#ifdef FEAT_SYN_HL
	/*
	 * syntax highlighting stuff.
	 */
	if (psettings->do_syntax)
	{
	    id = syn_get_id(curwin, ppos->file_line, col, 1, NULL, FALSE);
	    if (id > 0)
		id = syn_get_final_id(id);
	    else
		id = 0;
	    // Get the line again, a multi-line regexp may invalidate it.
	    line = ml_get(ppos->file_line);

	    if (id != current_syn_id)
	    {
		current_syn_id = id;
		prt_get_attr(id, &attr, psettings->modec);
		prt_set_font(attr.bold, attr.italic, attr.underline);
		prt_set_fg(attr.fg_color);
		prt_set_bg(attr.bg_color);
	    }
	}
#endif

	/*
	 * Appropriately expand any tabs to spaces.
	 */
	if (line[col] == TAB || tab_spaces != 0)
	{
	    if (tab_spaces == 0)
#ifdef FEAT_VARTABS
		tab_spaces = tabstop_padding(print_pos, curbuf->b_p_ts,
							curbuf->b_p_vts_array);
#else
		tab_spaces = (int)(curbuf->b_p_ts - (print_pos % curbuf->b_p_ts));
#endif

	    while (tab_spaces > 0)
	    {
		need_break = mch_print_text_out((char_u *)" ", 1);
		print_pos++;
		tab_spaces--;
		if (need_break)
		    break;
	    }
	    // Keep the TAB if we didn't finish it.
	    if (need_break && tab_spaces > 0)
		break;
	}
	else if (line[col] == FF
		&& printer_opts[OPT_PRINT_FORMFEED].present
		&& TOLOWER_ASC(printer_opts[OPT_PRINT_FORMFEED].string[0])
								       == 'y')
	{
	    ppos->ff = TRUE;
	    need_break = 1;
	}
	else
	{
	    need_break = mch_print_text_out(line + col, outputlen);
	    if (has_mbyte)
		print_pos += (*mb_ptr2cells)(line + col);
	    else
		print_pos++;
	}
    }

    ppos->lead_spaces = tab_spaces;
    ppos->print_pos = (int)print_pos;

    /*
     * Start next line of file if we clip lines, or have reached end of the
     * line, unless we are doing a formfeed.
     */
    if (!ppos->ff
	    && (line[col] == NUL
		|| (printer_opts[OPT_PRINT_WRAP].present
		    && TOLOWER_ASC(printer_opts[OPT_PRINT_WRAP].string[0])
								     == 'n')))
	return 0;
    return col;
}

# if defined(FEAT_POSTSCRIPT) || defined(PROTO)

/*
 * PS printer stuff.
 *
 * Sources of information to help maintain the PS printing code:
 *
 * 1. PostScript Language Reference, 3rd Edition,
 *      Addison-Wesley, 1999, ISBN 0-201-37922-8
 * 2. PostScript Language Program Design,
 *      Addison-Wesley, 1988, ISBN 0-201-14396-8
 * 3. PostScript Tutorial and Cookbook,
 *      Addison Wesley, 1985, ISBN 0-201-10179-3
 * 4. PostScript Language Document Structuring Conventions Specification,
 *    version 3.0,
 *      Adobe Technote 5001, 25th September 1992
 * 5. PostScript Printer Description File Format Specification, Version 4.3,
 *      Adobe technote 5003, 9th February 1996
 * 6. Adobe Font Metrics File Format Specification, Version 4.1,
 *      Adobe Technote 5007, 7th October 1998
 * 7. Adobe CMap and CIDFont Files Specification, Version 1.0,
 *      Adobe Technote 5014, 8th October 1996
 * 8. Adobe CJKV Character Collections and CMaps for CID-Keyed Fonts,
 *      Adoboe Technote 5094, 8th September, 2001
 * 9. CJKV Information Processing, 2nd Edition,
 *      O'Reilly, 2002, ISBN 1-56592-224-7
 *
 * Some of these documents can be found in PDF form on Adobe's web site -
 * http://www.adobe.com
 */

#define PRT_PS_DEFAULT_DPI	    (72)    // Default user space resolution
#define PRT_PS_DEFAULT_FONTSIZE     (10)
#define PRT_PS_DEFAULT_BUFFER_SIZE  (80)

struct prt_mediasize_S
{
    char	*name;
    float	width;		// width and height in points for portrait
    float	height;
};

#define PRT_MEDIASIZE_LEN  ARRAY_LENGTH(prt_mediasize)

static struct prt_mediasize_S prt_mediasize[] =
{
    {"A4",		595.0,  842.0},
    {"letter",		612.0,  792.0},
    {"10x14",		720.0, 1008.0},
    {"A3",		842.0, 1191.0},
    {"A5",		420.0,  595.0},
    {"B4",		729.0, 1032.0},
    {"B5",		516.0,  729.0},
    {"executive",	522.0,  756.0},
    {"folio",		595.0,  935.0},
    {"ledger",	       1224.0,  792.0},   // Yes, it is wider than taller!
    {"legal",		612.0, 1008.0},
    {"quarto",		610.0,  780.0},
    {"statement",	396.0,  612.0},
    {"tabloid",		792.0, 1224.0}
};

// PS font names, must be in Roman, Bold, Italic, Bold-Italic order
struct prt_ps_font_S
{
    int		wx;
    int		uline_offset;
    int		uline_width;
    int		bbox_min_y;
    int		bbox_max_y;
    char	*(ps_fontname[4]);
};

#define PRT_PS_FONT_ROMAN	(0)
#define PRT_PS_FONT_BOLD	(1)
#define PRT_PS_FONT_OBLIQUE	(2)
#define PRT_PS_FONT_BOLDOBLIQUE (3)

// Standard font metrics for Courier family
static struct prt_ps_font_S prt_ps_courier_font =
{
    600,
    -100, 50,
    -250, 805,
    {"Courier", "Courier-Bold", "Courier-Oblique", "Courier-BoldOblique"}
};

// Generic font metrics for multi-byte fonts
static struct prt_ps_font_S prt_ps_mb_font =
{
    1000,
    -100, 50,
    -250, 805,
    {NULL, NULL, NULL, NULL}
};

// Pointer to current font set being used
static struct prt_ps_font_S* prt_ps_font;

// Structures to map user named encoding and mapping to PS equivalents for
// building CID font name
struct prt_ps_encoding_S
{
    char	*encoding;
    char	*cmap_encoding;
    int		needs_charset;
};

struct prt_ps_charset_S
{
    char	*charset;
    char	*cmap_charset;
    int		has_charset;
};


#define CS_JIS_C_1978   (0x01)
#define CS_JIS_X_1983   (0x02)
#define CS_JIS_X_1990   (0x04)
#define CS_NEC		(0x08)
#define CS_MSWINDOWS	(0x10)
#define CS_CP932	(0x20)
#define CS_KANJITALK6	(0x40)
#define CS_KANJITALK7   (0x80)

// Japanese encodings and charsets
static struct prt_ps_encoding_S j_encodings[] =
{
    {"iso-2022-jp", NULL,       (CS_JIS_C_1978|CS_JIS_X_1983|CS_JIS_X_1990|
								    CS_NEC)},
    {"euc-jp",	    "EUC",	(CS_JIS_C_1978|CS_JIS_X_1983|CS_JIS_X_1990)},
    {"sjis",	    "RKSJ",	(CS_JIS_C_1978|CS_JIS_X_1983|CS_MSWINDOWS|
						CS_KANJITALK6|CS_KANJITALK7)},
    {"cp932",       "RKSJ",     CS_JIS_X_1983},
    {"ucs-2",       "UCS2",     CS_JIS_X_1990},
    {"utf-8",       "UTF8" ,    CS_JIS_X_1990}
};
static struct prt_ps_charset_S j_charsets[] =
{
    {"JIS_C_1978",  "78",       CS_JIS_C_1978},
    {"JIS_X_1983",  NULL,       CS_JIS_X_1983},
    {"JIS_X_1990",  "Hojo",     CS_JIS_X_1990},
    {"NEC",	    "Ext",	CS_NEC},
    {"MSWINDOWS",   "90ms",     CS_MSWINDOWS},
    {"CP932",       "90ms",     CS_JIS_X_1983},
    {"KANJITALK6",  "83pv",     CS_KANJITALK6},
    {"KANJITALK7",  "90pv",     CS_KANJITALK7}
};

#define CS_GB_2312_80       (0x01)
#define CS_GBT_12345_90     (0x02)
#define CS_GBK2K	    (0x04)
#define CS_SC_MAC	    (0x08)
#define CS_GBT_90_MAC	    (0x10)
#define CS_GBK		    (0x20)
#define CS_SC_ISO10646      (0x40)

// Simplified Chinese encodings and charsets
static struct prt_ps_encoding_S sc_encodings[] =
{
    {"iso-2022",    NULL,       (CS_GB_2312_80|CS_GBT_12345_90)},
    {"gb18030",     NULL,       CS_GBK2K},
    {"euc-cn",      "EUC",      (CS_GB_2312_80|CS_GBT_12345_90|CS_SC_MAC|
								CS_GBT_90_MAC)},
    {"gbk",	    "EUC",	CS_GBK},
    {"ucs-2",       "UCS2",     CS_SC_ISO10646},
    {"utf-8",       "UTF8",     CS_SC_ISO10646}
};
static struct prt_ps_charset_S sc_charsets[] =
{
    {"GB_2312-80",  "GB",       CS_GB_2312_80},
    {"GBT_12345-90","GBT",      CS_GBT_12345_90},
    {"MAC",	    "GBpc",	CS_SC_MAC},
    {"GBT-90_MAC",  "GBTpc",	CS_GBT_90_MAC},
    {"GBK",	    "GBK",	CS_GBK},
    {"GB18030",     "GBK2K",    CS_GBK2K},
    {"ISO10646",    "UniGB",    CS_SC_ISO10646}
};

#define CS_CNS_PLANE_1      (0x01)
#define CS_CNS_PLANE_2      (0x02)
#define CS_CNS_PLANE_1_2    (0x04)
#define CS_B5		    (0x08)
#define CS_ETEN		    (0x10)
#define CS_HK_GCCS	    (0x20)
#define CS_HK_SCS	    (0x40)
#define CS_HK_SCS_ETEN	    (0x80)
#define CS_MTHKL	    (0x100)
#define CS_MTHKS	    (0x200)
#define CS_DLHKL	    (0x400)
#define CS_DLHKS	    (0x800)
#define CS_TC_ISO10646	    (0x1000)

// Traditional Chinese encodings and charsets
static struct prt_ps_encoding_S tc_encodings[] =
{
    {"iso-2022",    NULL,       (CS_CNS_PLANE_1|CS_CNS_PLANE_2)},
    {"euc-tw",      "EUC",      CS_CNS_PLANE_1_2},
    {"big5",	    "B5",	(CS_B5|CS_ETEN|CS_HK_GCCS|CS_HK_SCS|
				    CS_HK_SCS_ETEN|CS_MTHKL|CS_MTHKS|CS_DLHKL|
								    CS_DLHKS)},
    {"cp950",       "B5",       CS_B5},
    {"ucs-2",       "UCS2",     CS_TC_ISO10646},
    {"utf-8",       "UTF8",     CS_TC_ISO10646},
    {"utf-16",      "UTF16",    CS_TC_ISO10646},
    {"utf-32",      "UTF32",    CS_TC_ISO10646}
};
static struct prt_ps_charset_S tc_charsets[] =
{
    {"CNS_1992_1",  "CNS1",     CS_CNS_PLANE_1},
    {"CNS_1992_2",  "CNS2",     CS_CNS_PLANE_2},
    {"CNS_1993",    "CNS",      CS_CNS_PLANE_1_2},
    {"BIG5",	    NULL,	CS_B5},
    {"CP950",	    NULL,	CS_B5},
    {"ETEN",	    "ETen",	CS_ETEN},
    {"HK_GCCS",     "HKgccs",	CS_HK_GCCS},
    {"SCS",	    "HKscs",	CS_HK_SCS},
    {"SCS_ETEN",    "ETHK",     CS_HK_SCS_ETEN},
    {"MTHKL",       "HKm471",   CS_MTHKL},
    {"MTHKS",       "HKm314",   CS_MTHKS},
    {"DLHKL",       "HKdla",    CS_DLHKL},
    {"DLHKS",       "HKdlb",    CS_DLHKS},
    {"ISO10646",    "UniCNS",   CS_TC_ISO10646}
};

#define CS_KR_X_1992	    (0x01)
#define CS_KR_MAC	    (0x02)
#define CS_KR_X_1992_MS     (0x04)
#define CS_KR_ISO10646      (0x08)

// Korean encodings and charsets
static struct prt_ps_encoding_S k_encodings[] =
{
    {"iso-2022-kr", NULL,       CS_KR_X_1992},
    {"euc-kr",      "EUC",      (CS_KR_X_1992|CS_KR_MAC)},
    {"johab",       "Johab",    CS_KR_X_1992},
    {"cp1361",      "Johab",    CS_KR_X_1992},
    {"uhc",	    "UHC",	CS_KR_X_1992_MS},
    {"cp949",       "UHC",      CS_KR_X_1992_MS},
    {"ucs-2",       "UCS2",     CS_KR_ISO10646},
    {"utf-8",       "UTF8",     CS_KR_ISO10646}
};
static struct prt_ps_charset_S k_charsets[] =
{
    {"KS_X_1992",   "KSC",      CS_KR_X_1992},
    {"CP1361",      "KSC",      CS_KR_X_1992},
    {"MAC",	    "KSCpc",	CS_KR_MAC},
    {"MSWINDOWS",   "KSCms",    CS_KR_X_1992_MS},
    {"CP949",       "KSCms",    CS_KR_X_1992_MS},
    {"WANSUNG",     "KSCms",    CS_KR_X_1992_MS},
    {"ISO10646",    "UniKS",    CS_KR_ISO10646}
};

// Collections of encodings and charsets for multi-byte printing
struct prt_ps_mbfont_S
{
    int				num_encodings;
    struct prt_ps_encoding_S	*encodings;
    int				num_charsets;
    struct prt_ps_charset_S	*charsets;
    char			*ascii_enc;
    char			*defcs;
};

static struct prt_ps_mbfont_S prt_ps_mbfonts[] =
{
    {
	ARRAY_LENGTH(j_encodings),
	j_encodings,
	ARRAY_LENGTH(j_charsets),
	j_charsets,
	"jis_roman",
	"JIS_X_1983"
    },
    {
	ARRAY_LENGTH(sc_encodings),
	sc_encodings,
	ARRAY_LENGTH(sc_charsets),
	sc_charsets,
	"gb_roman",
	"GB_2312-80"
    },
    {
	ARRAY_LENGTH(tc_encodings),
	tc_encodings,
	ARRAY_LENGTH(tc_charsets),
	tc_charsets,
	"cns_roman",
	"BIG5"
    },
    {
	ARRAY_LENGTH(k_encodings),
	k_encodings,
	ARRAY_LENGTH(k_charsets),
	k_charsets,
	"ks_roman",
	"KS_X_1992"
    }
};

struct prt_ps_resource_S
{
    char_u  name[64];
    char_u  filename[MAXPATHL + 1];
    int     type;
    char_u  title[256];
    char_u  version[256];
};

// Types of PS resource file currently used
#define PRT_RESOURCE_TYPE_PROCSET   (0)
#define PRT_RESOURCE_TYPE_ENCODING  (1)
#define PRT_RESOURCE_TYPE_CMAP      (2)

// The PS prolog file version number has to match - if the prolog file is
// updated, increment the number in the file and here.  Version checking was
// added as of VIM 6.2.
// The CID prolog file version number behaves as per PS prolog.
// Table of VIM and prolog versions:
//
// VIM      Prolog  CIDProlog
// 6.2      1.3
// 7.0      1.4	    1.0
#define PRT_PROLOG_VERSION  ((char_u *)"1.4")
#define PRT_CID_PROLOG_VERSION  ((char_u *)"1.0")

// String versions of PS resource types - indexed by constants above so don't
// re-order!
static char *prt_resource_types[] =
{
    "procset",
    "encoding",
    "cmap"
};

// Strings to look for in a PS resource file
#define PRT_RESOURCE_HEADER	    "%!PS-Adobe-"
#define PRT_RESOURCE_RESOURCE	    "Resource-"
#define PRT_RESOURCE_PROCSET	    "ProcSet"
#define PRT_RESOURCE_ENCODING	    "Encoding"
#define PRT_RESOURCE_CMAP	    "CMap"


// Data for table based DSC comment recognition, easy to extend if VIM needs to
// read more comments.
#define PRT_DSC_MISC_TYPE	    (-1)
#define PRT_DSC_TITLE_TYPE	    (1)
#define PRT_DSC_VERSION_TYPE	    (2)
#define PRT_DSC_ENDCOMMENTS_TYPE    (3)

#define PRT_DSC_TITLE		    "%%Title:"
#define PRT_DSC_VERSION		    "%%Version:"
#define PRT_DSC_ENDCOMMENTS	    "%%EndComments:"

struct prt_dsc_comment_S
{
    char	*string;
    int		len;
    int		type;
};

struct prt_dsc_line_S
{
    int		type;
    char_u	*string;
    int		len;
};


#define SIZEOF_CSTR(s)      (sizeof(s) - 1)
static struct prt_dsc_comment_S prt_dsc_table[] =
{
    {PRT_DSC_TITLE,       SIZEOF_CSTR(PRT_DSC_TITLE),     PRT_DSC_TITLE_TYPE},
    {PRT_DSC_VERSION,     SIZEOF_CSTR(PRT_DSC_VERSION),
							PRT_DSC_VERSION_TYPE},
    {PRT_DSC_ENDCOMMENTS, SIZEOF_CSTR(PRT_DSC_ENDCOMMENTS),
						     PRT_DSC_ENDCOMMENTS_TYPE}
};

static void prt_write_file_len(char_u *buffer, int bytes);
static int prt_next_dsc(struct prt_dsc_line_S *p_dsc_line);

/*
 * Variables for the output PostScript file.
 */
static FILE *prt_ps_fd;
static int prt_file_error;
static char_u *prt_ps_file_name = NULL;

/*
 * Various offsets and dimensions in default PostScript user space (points).
 * Used for text positioning calculations
 */
static float prt_page_width;
static float prt_page_height;
static float prt_left_margin;
static float prt_right_margin;
static float prt_top_margin;
static float prt_bottom_margin;
static float prt_line_height;
static float prt_first_line_height;
static float prt_char_width;
static float prt_number_width;
static float prt_bgcol_offset;
static float prt_pos_x_moveto = 0.0;
static float prt_pos_y_moveto = 0.0;

/*
 * Various control variables used to decide when and how to change the
 * PostScript graphics state.
 */
static int prt_need_moveto;
static int prt_do_moveto;
static int prt_need_font;
static int prt_font;
static int prt_need_underline;
static int prt_underline;
static int prt_do_underline;
static int prt_need_fgcol;
static int prt_fgcol;
static int prt_need_bgcol;
static int prt_do_bgcol;
static int prt_bgcol;
static int prt_new_bgcol;
static int prt_attribute_change;
static float prt_text_run;
static int prt_page_num;
static int prt_bufsiz;

/*
 * Variables controlling physical printing.
 */
static int prt_media;
static int prt_portrait;
static int prt_num_copies;
static int prt_duplex;
static int prt_tumble;
static int prt_collate;

/*
 * Buffers used when generating PostScript output
 */
static char_u prt_line_buffer[257];
static garray_T prt_ps_buffer;

static int prt_do_conv;
static vimconv_T prt_conv;

static int prt_out_mbyte;
static int prt_custom_cmap;
static char prt_cmap[80];
static int prt_use_courier;
static int prt_in_ascii;
static int prt_half_width;
static char *prt_ascii_encoding;
static char_u prt_hexchar[] = "0123456789abcdef";

    static void
prt_write_file_raw_len(char_u *buffer, int bytes)
{
    if (!prt_file_error
	    && fwrite(buffer, sizeof(char_u), bytes, prt_ps_fd)
							     != (size_t)bytes)
    {
	emsg(_(e_error_writing_to_postscript_output_file));
	prt_file_error = TRUE;
    }
}

    static void
prt_write_file(char_u *buffer)
{
    prt_write_file_len(buffer, (int)STRLEN(buffer));
}

    static void
prt_write_file_len(char_u *buffer, int bytes)
{
    prt_write_file_raw_len(buffer, bytes);
}

/*
 * Write a string.
 */
    static void
prt_write_string(char *s)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer), "%s", s);
    prt_write_file(prt_line_buffer);
}

/*
 * Write an int and a space.
 */
    static void
prt_write_int(int i)
{
    sprintf((char *)prt_line_buffer, "%d ", i);
    prt_write_file(prt_line_buffer);
}

/*
 * Write a boolean and a space.
 */
    static void
prt_write_boolean(int b)
{
    sprintf((char *)prt_line_buffer, "%s ", (b ? "T" : "F"));
    prt_write_file(prt_line_buffer);
}

/*
 * Write PostScript to re-encode and define the font.
 */
    static void
prt_def_font(
    char	*new_name,
    char	*encoding,
    int		height,
    char	*font)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
			  "/_%s /VIM-%s /%s ref\n", new_name, encoding, font);
    prt_write_file(prt_line_buffer);
    if (prt_out_mbyte)
	sprintf((char *)prt_line_buffer, "/%s %d %f /_%s sffs\n",
		       new_name, height, 500./prt_ps_courier_font.wx, new_name);
    else
	vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
			     "/%s %d /_%s ffs\n", new_name, height, new_name);
    prt_write_file(prt_line_buffer);
}

/*
 * Write a line to define the CID font.
 */
    static void
prt_def_cidfont(char *new_name, int height, char *cidfont)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
	      "/_%s /%s[/%s] vim_composefont\n", new_name, prt_cmap, cidfont);
    prt_write_file(prt_line_buffer);
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
			     "/%s %d /_%s ffs\n", new_name, height, new_name);
    prt_write_file(prt_line_buffer);
}

/*
 * Write a line to define a duplicate of a CID font
 */
    static void
prt_dup_cidfont(char *original_name, char *new_name)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
				       "/%s %s d\n", new_name, original_name);
    prt_write_file(prt_line_buffer);
}

/*
 * Convert a real value into an integer and fractional part as integers, with
 * the fractional part being in the range [0,10^precision).  The fractional part
 * is also rounded based on the precision + 1'th fractional digit.
 */
    static void
prt_real_bits(
    double      real,
    int		precision,
    int		*pinteger,
    int		*pfraction)
{
    int     i;
    int     integer;
    float   fraction;

    integer = (int)real;
    fraction = (float)(real - integer);
    if (real < (double)integer)
	fraction = -fraction;
    for (i = 0; i < precision; i++)
	fraction *= 10.0;

    *pinteger = integer;
    *pfraction = (int)(fraction + 0.5);
}

/*
 * Write a real and a space.  Save bytes if real value has no fractional part!
 * We use prt_real_bits() as %f in sprintf uses the locale setting to decide
 * what decimal point character to use, but PS always requires a '.'.
 */
    static void
prt_write_real(double val, int prec)
{
    int     integer;
    int     fraction;

    prt_real_bits(val, prec, &integer, &fraction);
    // Emit integer part
    sprintf((char *)prt_line_buffer, "%d", integer);
    prt_write_file(prt_line_buffer);
    // Only emit fraction if necessary
    if (fraction != 0)
    {
	// Remove any trailing zeros
	while ((fraction % 10) == 0)
	{
	    prec--;
	    fraction /= 10;
	}
	// Emit fraction left padded with zeros
	sprintf((char *)prt_line_buffer, ".%0*d", prec, fraction);
	prt_write_file(prt_line_buffer);
    }
    sprintf((char *)prt_line_buffer, " ");
    prt_write_file(prt_line_buffer);
}

/*
 * Write a line to define a numeric variable.
 */
    static void
prt_def_var(char *name, double value, int prec)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
								"/%s ", name);
    prt_write_file(prt_line_buffer);
    prt_write_real(value, prec);
    sprintf((char *)prt_line_buffer, "d\n");
    prt_write_file(prt_line_buffer);
}

// Convert size from font space to user space at current font scale
#define PRT_PS_FONT_TO_USER(scale, size)    ((size) * ((scale)/1000.0))

    static void
prt_flush_buffer(void)
{
    if (prt_ps_buffer.ga_len <= 0)
	return;

    // Any background color must be drawn first
    if (prt_do_bgcol && (prt_new_bgcol != PRCOLOR_WHITE))
    {
	int     r, g, b;

	if (prt_do_moveto)
	{
	    prt_write_real(prt_pos_x_moveto, 2);
	    prt_write_real(prt_pos_y_moveto, 2);
	    prt_write_string("m\n");
	    prt_do_moveto = FALSE;
	}

	// Size of rect of background color on which text is printed
	prt_write_real(prt_text_run, 2);
	prt_write_real(prt_line_height, 2);

	// Lastly add the color of the background
	r = ((unsigned)prt_new_bgcol & 0xff0000) >> 16;
	g = ((unsigned)prt_new_bgcol & 0xff00) >> 8;
	b = prt_new_bgcol & 0xff;
	prt_write_real(r / 255.0, 3);
	prt_write_real(g / 255.0, 3);
	prt_write_real(b / 255.0, 3);
	prt_write_string("bg\n");
    }
    // Draw underlines before the text as it makes it slightly easier to
    // find the starting point.
    if (prt_do_underline)
    {
	if (prt_do_moveto)
	{
	    prt_write_real(prt_pos_x_moveto, 2);
	    prt_write_real(prt_pos_y_moveto, 2);
	    prt_write_string("m\n");
	    prt_do_moveto = FALSE;
	}

	// Underline length of text run
	prt_write_real(prt_text_run, 2);
	prt_write_string("ul\n");
    }
    // Draw the text
    if (prt_out_mbyte)
	prt_write_string("<");
    else
	prt_write_string("(");
    prt_write_file_raw_len(prt_ps_buffer.ga_data, prt_ps_buffer.ga_len);
    if (prt_out_mbyte)
	prt_write_string(">");
    else
	prt_write_string(")");
    // Add a moveto if need be and use the appropriate show procedure
    if (prt_do_moveto)
    {
	prt_write_real(prt_pos_x_moveto, 2);
	prt_write_real(prt_pos_y_moveto, 2);
	// moveto and a show
	prt_write_string("ms\n");
	prt_do_moveto = FALSE;
    }
    else // Simple show
	prt_write_string("s\n");

    ga_clear(&prt_ps_buffer);
    ga_init2(&prt_ps_buffer, sizeof(char), prt_bufsiz);
}


    static void
prt_resource_name(char_u *filename, void *cookie)
{
    char_u *resource_filename = cookie;

    if (STRLEN(filename) >= MAXPATHL)
	*resource_filename = NUL;
    else
	STRCPY(resource_filename, filename);
}

    static int
prt_find_resource(char *name, struct prt_ps_resource_S *resource)
{
    char_u	*buffer;
    int		retval;

    buffer = alloc(MAXPATHL + 1);
    if (buffer == NULL)
	return FALSE;

    vim_strncpy(resource->name, (char_u *)name, 63);
    // Look for named resource file in runtimepath
    STRCPY(buffer, "print");
    add_pathsep(buffer);
    vim_strcat(buffer, (char_u *)name, MAXPATHL);
    vim_strcat(buffer, (char_u *)".ps", MAXPATHL);
    resource->filename[0] = NUL;
    retval = (do_in_runtimepath(buffer, 0, prt_resource_name,
							   resource->filename)
	    && resource->filename[0] != NUL);
    vim_free(buffer);
    return retval;
}

// PS CR and LF characters have platform independent values
#define PSLF  (0x0a)
#define PSCR  (0x0d)

// Static buffer to read initial comments in a resource file, some can have a
// couple of KB of comments!
#define PRT_FILE_BUFFER_LEN (2048)
struct prt_resfile_buffer_S
{
    char_u  buffer[PRT_FILE_BUFFER_LEN];
    int     len;
    int     line_start;
    int     line_end;
};

static struct prt_resfile_buffer_S prt_resfile;

    static int
prt_resfile_next_line(void)
{
    int     idx;

    // Move to start of next line and then find end of line
    idx = prt_resfile.line_end + 1;
    while (idx < prt_resfile.len)
    {
	if (prt_resfile.buffer[idx] != PSLF && prt_resfile.buffer[idx] != PSCR)
	    break;
	idx++;
    }
    prt_resfile.line_start = idx;

    while (idx < prt_resfile.len)
    {
	if (prt_resfile.buffer[idx] == PSLF || prt_resfile.buffer[idx] == PSCR)
	    break;
	idx++;
    }
    prt_resfile.line_end = idx;

    return (idx < prt_resfile.len);
}

    static int
prt_resfile_strncmp(int offset, char *string, int len)
{
    // Force not equal if string is longer than remainder of line
    if (len > (prt_resfile.line_end - (prt_resfile.line_start + offset)))
	return 1;

    return STRNCMP(&prt_resfile.buffer[prt_resfile.line_start + offset],
								string, len);
}

    static int
prt_resfile_skip_nonws(int offset)
{
    int     idx;

    idx = prt_resfile.line_start + offset;
    while (idx < prt_resfile.line_end)
    {
	if (isspace(prt_resfile.buffer[idx]))
	    return idx - prt_resfile.line_start;
	idx++;
    }
    return -1;
}

    static int
prt_resfile_skip_ws(int offset)
{
    int     idx;

    idx = prt_resfile.line_start + offset;
    while (idx < prt_resfile.line_end)
    {
	if (!isspace(prt_resfile.buffer[idx]))
	    return idx - prt_resfile.line_start;
	idx++;
    }
    return -1;
}

// prt_next_dsc() - returns detail on next DSC comment line found.  Returns true
// if a DSC comment is found, else false
    static int
prt_next_dsc(struct prt_dsc_line_S *p_dsc_line)
{
    int     comment;
    int     offset;

    // Move to start of next line
    if (!prt_resfile_next_line())
	return FALSE;

    // DSC comments always start %%
    if (prt_resfile_strncmp(0, "%%", 2) != 0)
	return FALSE;

    // Find type of DSC comment
    for (comment = 0; comment < (int)ARRAY_LENGTH(prt_dsc_table); comment++)
	if (prt_resfile_strncmp(0, prt_dsc_table[comment].string,
					    prt_dsc_table[comment].len) == 0)
	    break;

    if (comment != ARRAY_LENGTH(prt_dsc_table))
    {
	// Return type of comment
	p_dsc_line->type = prt_dsc_table[comment].type;
	offset = prt_dsc_table[comment].len;
    }
    else
    {
	// Unrecognised DSC comment, skip to ws after comment leader
	p_dsc_line->type = PRT_DSC_MISC_TYPE;
	offset = prt_resfile_skip_nonws(0);
	if (offset == -1)
	    return FALSE;
    }

    // Skip ws to comment value
    offset = prt_resfile_skip_ws(offset);
    if (offset == -1)
	return FALSE;

    p_dsc_line->string = &prt_resfile.buffer[prt_resfile.line_start + offset];
    p_dsc_line->len = prt_resfile.line_end - (prt_resfile.line_start + offset);

    return TRUE;
}

/*
 * Improved hand crafted parser to get the type, title, and version number of a
 * PS resource file so the file details can be added to the DSC header comments.
 */
    static int
prt_open_resource(struct prt_ps_resource_S *resource)
{
    int		offset;
    int		seen_all;
    int		seen_title;
    int		seen_version;
    FILE	*fd_resource;
    struct prt_dsc_line_S dsc_line;

    fd_resource = mch_fopen((char *)resource->filename, READBIN);
    if (fd_resource == NULL)
    {
	semsg(_(e_cant_open_file_str_3), resource->filename);
	return FALSE;
    }
    CLEAR_FIELD(prt_resfile.buffer);

    // Parse first line to ensure valid resource file
    prt_resfile.len = (int)fread((char *)prt_resfile.buffer, sizeof(char_u),
					    PRT_FILE_BUFFER_LEN, fd_resource);
    if (ferror(fd_resource))
    {
	semsg(_(e_cant_read_postscript_resource_file_str),
		resource->filename);
	fclose(fd_resource);
	return FALSE;
    }
    fclose(fd_resource);

    prt_resfile.line_end = -1;
    prt_resfile.line_start = 0;
    if (!prt_resfile_next_line())
	return FALSE;

    offset = 0;

    if (prt_resfile_strncmp(offset, PRT_RESOURCE_HEADER,
				       (int)STRLEN(PRT_RESOURCE_HEADER)) != 0)
    {
	semsg(_(e_file_str_is_not_postscript_resource_file),
							   resource->filename);
	return FALSE;
    }

    // Skip over any version numbers and following ws
    offset += (int)STRLEN(PRT_RESOURCE_HEADER);
    offset = prt_resfile_skip_nonws(offset);
    if (offset == -1)
	return FALSE;
    offset = prt_resfile_skip_ws(offset);
    if (offset == -1)
	return FALSE;

    if (prt_resfile_strncmp(offset, PRT_RESOURCE_RESOURCE,
				     (int)STRLEN(PRT_RESOURCE_RESOURCE)) != 0)
    {
	semsg(_(e_file_str_is_not_supported_postscript_resource_file),
							   resource->filename);
	return FALSE;
    }
    offset += (int)STRLEN(PRT_RESOURCE_RESOURCE);

    // Decide type of resource in the file
    if (prt_resfile_strncmp(offset, PRT_RESOURCE_PROCSET,
				      (int)STRLEN(PRT_RESOURCE_PROCSET)) == 0)
	resource->type = PRT_RESOURCE_TYPE_PROCSET;
    else if (prt_resfile_strncmp(offset, PRT_RESOURCE_ENCODING,
				     (int)STRLEN(PRT_RESOURCE_ENCODING)) == 0)
	resource->type = PRT_RESOURCE_TYPE_ENCODING;
    else if (prt_resfile_strncmp(offset, PRT_RESOURCE_CMAP,
					 (int)STRLEN(PRT_RESOURCE_CMAP)) == 0)
	resource->type = PRT_RESOURCE_TYPE_CMAP;
    else
    {
	semsg(_(e_file_str_is_not_supported_postscript_resource_file),
							   resource->filename);
	return FALSE;
    }

    // Look for title and version of resource
    resource->title[0] = '\0';
    resource->version[0] = '\0';
    seen_title = FALSE;
    seen_version = FALSE;
    seen_all = FALSE;
    while (!seen_all && prt_next_dsc(&dsc_line))
    {
	switch (dsc_line.type)
	{
	case PRT_DSC_TITLE_TYPE:
	    vim_strncpy(resource->title, dsc_line.string, dsc_line.len);
	    seen_title = TRUE;
	    if (seen_version)
		seen_all = TRUE;
	    break;

	case PRT_DSC_VERSION_TYPE:
	    vim_strncpy(resource->version, dsc_line.string, dsc_line.len);
	    seen_version = TRUE;
	    if (seen_title)
		seen_all = TRUE;
	    break;

	case PRT_DSC_ENDCOMMENTS_TYPE:
	    // Won't find title or resource after this comment, stop searching
	    seen_all = TRUE;
	    break;

	case PRT_DSC_MISC_TYPE:
	    // Not interested in whatever comment this line had
	    break;
	}
    }

    if (!seen_title || !seen_version)
    {
	semsg(_(e_file_str_is_not_supported_postscript_resource_file),
							   resource->filename);
	return FALSE;
    }

    return TRUE;
}

    static int
prt_check_resource(struct prt_ps_resource_S *resource, char_u *version)
{
    // Version number m.n should match, the revision number does not matter
    if (STRNCMP(resource->version, version, STRLEN(version)))
    {
	semsg(_(e_str_resource_file_has_wrong_version),
		resource->name);
	return FALSE;
    }

    // Other checks to be added as needed
    return TRUE;
}

    static void
prt_dsc_start(void)
{
    prt_write_string("%!PS-Adobe-3.0\n");
}

    static void
prt_dsc_noarg(char *comment)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
							 "%%%%%s\n", comment);
    prt_write_file(prt_line_buffer);
}

    static void
prt_dsc_textline(char *comment, char *text)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
					       "%%%%%s: %s\n", comment, text);
    prt_write_file(prt_line_buffer);
}

    static void
prt_dsc_text(char *comment, char *text)
{
    // TODO - should scan 'text' for any chars needing escaping!
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
					     "%%%%%s: (%s)\n", comment, text);
    prt_write_file(prt_line_buffer);
}

#define prt_dsc_atend(c)	prt_dsc_text((c), "atend")

    static void
prt_dsc_ints(char *comment, int count, int *ints)
{
    int		i;

    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
							  "%%%%%s:", comment);
    prt_write_file(prt_line_buffer);

    for (i = 0; i < count; i++)
    {
	sprintf((char *)prt_line_buffer, " %d", ints[i]);
	prt_write_file(prt_line_buffer);
    }

    prt_write_string("\n");
}

    static void
prt_dsc_resources(
    char	*comment,	// if NULL add to previous
    char	*type,
    char	*string)
{
    if (comment != NULL)
	vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
						 "%%%%%s: %s", comment, type);
    else
	vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
							    "%%%%+ %s", type);
    prt_write_file(prt_line_buffer);

    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
							     " %s\n", string);
    prt_write_file(prt_line_buffer);
}

    static void
prt_dsc_font_resource(char *resource, struct prt_ps_font_S *ps_font)
{
    int     i;

    prt_dsc_resources(resource, "font",
				    ps_font->ps_fontname[PRT_PS_FONT_ROMAN]);
    for (i = PRT_PS_FONT_BOLD ; i <= PRT_PS_FONT_BOLDOBLIQUE ; i++)
	if (ps_font->ps_fontname[i] != NULL)
	    prt_dsc_resources(NULL, "font", ps_font->ps_fontname[i]);
}

    static void
prt_dsc_requirements(
    int		duplex,
    int		tumble,
    int		collate,
    int		color,
    int		num_copies)
{
    // Only output the comment if we need to.
    // Note: tumble is ignored if we are not duplexing
    if (!(duplex || collate || color || (num_copies > 1)))
	return;

    sprintf((char *)prt_line_buffer, "%%%%Requirements:");
    prt_write_file(prt_line_buffer);

    if (duplex)
    {
	prt_write_string(" duplex");
	if (tumble)
	    prt_write_string("(tumble)");
    }
    if (collate)
	prt_write_string(" collate");
    if (color)
	prt_write_string(" color");
    if (num_copies > 1)
    {
	prt_write_string(" numcopies(");
	// Note: no space wanted so don't use prt_write_int()
	sprintf((char *)prt_line_buffer, "%d", num_copies);
	prt_write_file(prt_line_buffer);
	prt_write_string(")");
    }
    prt_write_string("\n");
}

    static void
prt_dsc_docmedia(
    char	*paper_name,
    double	width,
    double	height,
    double	weight,
    char	*colour,
    char	*type)
{
    vim_snprintf((char *)prt_line_buffer, sizeof(prt_line_buffer),
					"%%%%DocumentMedia: %s ", paper_name);
    prt_write_file(prt_line_buffer);
    prt_write_real(width, 2);
    prt_write_real(height, 2);
    prt_write_real(weight, 2);
    if (colour == NULL)
	prt_write_string("()");
    else
	prt_write_string(colour);
    prt_write_string(" ");
    if (type == NULL)
	prt_write_string("()");
    else
	prt_write_string(type);
    prt_write_string("\n");
}

    void
mch_print_cleanup(void)
{
    if (prt_out_mbyte)
    {
	int     i;

	// Free off all CID font names created, but first clear duplicate
	// pointers to the same string (when the same font is used for more than
	// one style).
	for (i = PRT_PS_FONT_ROMAN; i <= PRT_PS_FONT_BOLDOBLIQUE; i++)
	{
	    if (prt_ps_mb_font.ps_fontname[i] != NULL)
		VIM_CLEAR(prt_ps_mb_font.ps_fontname[i]);
	}
    }

    if (prt_do_conv)
    {
	convert_setup(&prt_conv, NULL, NULL);
	prt_do_conv = FALSE;
    }
    if (prt_ps_fd != NULL)
    {
	fclose(prt_ps_fd);
	prt_ps_fd = NULL;
	prt_file_error = FALSE;
    }
    if (prt_ps_file_name != NULL)
	VIM_CLEAR(prt_ps_file_name);
}

    static float
to_device_units(int idx, double physsize, int def_number)
{
    float	ret;
    int		u;
    int		nr;

    u = prt_get_unit(idx);
    if (u == PRT_UNIT_NONE)
    {
	u = PRT_UNIT_PERC;
	nr = def_number;
    }
    else
	nr = printer_opts[idx].number;

    switch (u)
    {
	case PRT_UNIT_INCH:
	    ret = (float)(nr * PRT_PS_DEFAULT_DPI);
	    break;
	case PRT_UNIT_MM:
	    ret = (float)(nr * PRT_PS_DEFAULT_DPI) / (float)25.4;
	    break;
	case PRT_UNIT_POINT:
	    ret = (float)nr;
	    break;
	case PRT_UNIT_PERC:
	default:
	    ret = (float)(physsize * nr) / 100;
	    break;
    }

    return ret;
}

/*
 * Calculate margins for given width and height from printoptions settings.
 */
    static void
prt_page_margins(
    double	width,
    double	height,
    double	*left,
    double	*right,
    double	*top,
    double	*bottom)
{
    *left   = to_device_units(OPT_PRINT_LEFT, width, 10);
    *right  = width - to_device_units(OPT_PRINT_RIGHT, width, 5);
    *top    = height - to_device_units(OPT_PRINT_TOP, height, 5);
    *bottom = to_device_units(OPT_PRINT_BOT, height, 5);
}

    static void
prt_font_metrics(int font_scale)
{
    prt_line_height = (float)font_scale;
    prt_char_width = (float)PRT_PS_FONT_TO_USER(font_scale, prt_ps_font->wx);
}


    static int
prt_get_cpl(void)
{
    if (prt_use_number())
    {
	prt_number_width = PRINT_NUMBER_WIDTH * prt_char_width;
	// If we are outputting multi-byte characters then line numbers will be
	// printed with half width characters
	if (prt_out_mbyte)
	    prt_number_width /= 2;
	prt_left_margin += prt_number_width;
    }
    else
	prt_number_width = 0.0;

    return (int)((prt_right_margin - prt_left_margin) / prt_char_width);
}

    static int
prt_build_cid_fontname(int font, char_u *name, int name_len)
{
    char    *fontname;

    fontname = alloc(name_len + 1);
    if (fontname == NULL)
	return FALSE;
    vim_strncpy((char_u *)fontname, name, name_len);
    prt_ps_mb_font.ps_fontname[font] = fontname;

    return TRUE;
}

/*
 * Get number of lines of text that fit on a page (excluding the header).
 */
    static int
prt_get_lpp(void)
{
    int lpp;

    /*
     * Calculate offset to lower left corner of background rect based on actual
     * font height (based on its bounding box) and the line height, handling the
     * case where the font height can exceed the line height.
     */
    prt_bgcol_offset = (float)PRT_PS_FONT_TO_USER(prt_line_height,
					   prt_ps_font->bbox_min_y);
    if ((prt_ps_font->bbox_max_y - prt_ps_font->bbox_min_y) < 1000.0)
    {
	prt_bgcol_offset -= (float)PRT_PS_FONT_TO_USER(prt_line_height,
				(1000.0 - (prt_ps_font->bbox_max_y -
					    prt_ps_font->bbox_min_y)) / 2);
    }

    // Get height for topmost line based on background rect offset.
    prt_first_line_height = prt_line_height + prt_bgcol_offset;

    // Calculate lpp
    lpp = (int)((prt_top_margin - prt_bottom_margin) / prt_line_height);

    // Adjust top margin if there is a header
    prt_top_margin -= prt_line_height * prt_header_height();

    return lpp - prt_header_height();
}

    static int
prt_match_encoding(
    char			*p_encoding,
    struct prt_ps_mbfont_S	*p_cmap,
    struct prt_ps_encoding_S	**pp_mbenc)
{
    int				mbenc;
    int				enc_len;
    struct prt_ps_encoding_S	*p_mbenc;

    *pp_mbenc = NULL;
    // Look for recognised encoding
    enc_len = (int)STRLEN(p_encoding);
    p_mbenc = p_cmap->encodings;
    for (mbenc = 0; mbenc < p_cmap->num_encodings; mbenc++)
    {
	if (STRNICMP(p_mbenc->encoding, p_encoding, enc_len) == 0)
	{
	    *pp_mbenc = p_mbenc;
	    return TRUE;
	}
	p_mbenc++;
    }
    return FALSE;
}

    static int
prt_match_charset(
    char		    *p_charset,
    struct prt_ps_mbfont_S  *p_cmap,
    struct prt_ps_charset_S **pp_mbchar)
{
    int			    mbchar;
    int			    char_len;
    struct prt_ps_charset_S *p_mbchar;

    // Look for recognised character set, using default if one is not given
    if (*p_charset == NUL)
	p_charset = p_cmap->defcs;
    char_len = (int)STRLEN(p_charset);
    p_mbchar = p_cmap->charsets;
    for (mbchar = 0; mbchar < p_cmap->num_charsets; mbchar++)
    {
	if (STRNICMP(p_mbchar->charset, p_charset, char_len) == 0)
	{
	    *pp_mbchar = p_mbchar;
	    return TRUE;
	}
	p_mbchar++;
    }
    return FALSE;
}

    int
mch_print_init(
    prt_settings_T *psettings,
    char_u	*jobname,
    int		forceit UNUSED)
{
    int		i;
    char	*paper_name;
    int		paper_strlen;
    int		fontsize;
    char_u	*p;
    double      left;
    double      right;
    double      top;
    double      bottom;
    int		props;
    int		cmap = 0;
    char_u	*p_encoding;
    struct prt_ps_encoding_S *p_mbenc;
    struct prt_ps_encoding_S *p_mbenc_first;
    struct prt_ps_charset_S  *p_mbchar = NULL;

#if 0
    /*
     * TODO:
     * If "forceit" is false: pop up a dialog to select:
     *	- printer name
     *	- copies
     *	- collated/uncollated
     *	- duplex off/long side/short side
     *	- paper size
     *	- portrait/landscape
     *	- font size
     *
     * If "forceit" is true: use the default printer and settings
     */
    if (forceit)
	s_pd.Flags |= PD_RETURNDEFAULT;
#endif

    /*
     * Set up font and encoding.
     */
    p_encoding = enc_skip(p_penc);
    if (*p_encoding == NUL)
	p_encoding = enc_skip(p_enc);

    // Look for a multi-byte font that matches the encoding and character set.
    // Only look if multi-byte character set is defined, or using multi-byte
    // encoding other than Unicode.  This is because a Unicode encoding does not
    // uniquely identify a CJK character set to use.
    p_mbenc = NULL;
    props = enc_canon_props(p_encoding);
    if (!(props & ENC_8BIT) && ((*p_pmcs != NUL) || !(props & ENC_UNICODE)))
    {
	int cmap_first = 0;

	p_mbenc_first = NULL;
	for (cmap = 0; cmap < (int)ARRAY_LENGTH(prt_ps_mbfonts); cmap++)
	    if (prt_match_encoding((char *)p_encoding, &prt_ps_mbfonts[cmap],
								    &p_mbenc))
	    {
		if (p_mbenc_first == NULL)
		{
		    p_mbenc_first = p_mbenc;
		    cmap_first = cmap;
		}
		if (prt_match_charset((char *)p_pmcs, &prt_ps_mbfonts[cmap],
								   &p_mbchar))
		    break;
	    }

	// Use first encoding matched if no charset matched
	if (p_mbchar == NULL && p_mbenc_first != NULL)
	{
	    p_mbenc = p_mbenc_first;
	    cmap = cmap_first;
	}
    }

    prt_out_mbyte = (p_mbenc != NULL);
    if (prt_out_mbyte)
    {
	// Build CMap name - will be same for all multi-byte fonts used
	prt_cmap[0] = NUL;

	prt_custom_cmap = (p_mbchar == NULL);
	if (!prt_custom_cmap)
	{
	    // Check encoding and character set are compatible
	    if ((p_mbenc->needs_charset & p_mbchar->has_charset) == 0)
	    {
		emsg(_(e_incompatible_multi_byte_encoding_and_character_set));
		return FALSE;
	    }

	    // Add charset name if not empty
	    if (p_mbchar->cmap_charset != NULL)
	    {
		vim_strncpy((char_u *)prt_cmap,
		      (char_u *)p_mbchar->cmap_charset, sizeof(prt_cmap) - 3);
		STRCAT(prt_cmap, "-");
	    }
	}
	else
	{
	    // Add custom CMap character set name
	    if (*p_pmcs == NUL)
	    {
		emsg(_(e_printmbcharset_cannot_be_empty_with_multi_byte_encoding));
		return FALSE;
	    }
	    vim_strncpy((char_u *)prt_cmap, p_pmcs, sizeof(prt_cmap) - 3);
	    STRCAT(prt_cmap, "-");
	}

	// CMap name ends with (optional) encoding name and -H for horizontal
	if (p_mbenc->cmap_encoding != NULL && STRLEN(prt_cmap)
		      + STRLEN(p_mbenc->cmap_encoding) + 3 < sizeof(prt_cmap))
	{
	    STRCAT(prt_cmap, p_mbenc->cmap_encoding);
	    STRCAT(prt_cmap, "-");
	}
	STRCAT(prt_cmap, "H");

	if (!mbfont_opts[OPT_MBFONT_REGULAR].present)
	{
	    emsg(_(e_no_default_font_specified_for_multi_byte_printing));
	    return FALSE;
	}

	// Derive CID font names with fallbacks if not defined
	if (!prt_build_cid_fontname(PRT_PS_FONT_ROMAN,
				    mbfont_opts[OPT_MBFONT_REGULAR].string,
				    mbfont_opts[OPT_MBFONT_REGULAR].strlen))
	    return FALSE;
	if (mbfont_opts[OPT_MBFONT_BOLD].present)
	    if (!prt_build_cid_fontname(PRT_PS_FONT_BOLD,
					mbfont_opts[OPT_MBFONT_BOLD].string,
					mbfont_opts[OPT_MBFONT_BOLD].strlen))
		return FALSE;
	if (mbfont_opts[OPT_MBFONT_OBLIQUE].present)
	    if (!prt_build_cid_fontname(PRT_PS_FONT_OBLIQUE,
					mbfont_opts[OPT_MBFONT_OBLIQUE].string,
					mbfont_opts[OPT_MBFONT_OBLIQUE].strlen))
		return FALSE;
	if (mbfont_opts[OPT_MBFONT_BOLDOBLIQUE].present)
	    if (!prt_build_cid_fontname(PRT_PS_FONT_BOLDOBLIQUE,
				   mbfont_opts[OPT_MBFONT_BOLDOBLIQUE].string,
				  mbfont_opts[OPT_MBFONT_BOLDOBLIQUE].strlen))
		return FALSE;

	// Check if need to use Courier for ASCII code range, and if so pick up
	// the encoding to use
	prt_use_courier = mbfont_opts[OPT_MBFONT_USECOURIER].present &&
	    (TOLOWER_ASC(mbfont_opts[OPT_MBFONT_USECOURIER].string[0]) == 'y');
	if (prt_use_courier)
	{
	    // Use national ASCII variant unless ASCII wanted
	    if (mbfont_opts[OPT_MBFONT_ASCII].present &&
		(TOLOWER_ASC(mbfont_opts[OPT_MBFONT_ASCII].string[0]) == 'y'))
		prt_ascii_encoding = "ascii";
	    else
		prt_ascii_encoding = prt_ps_mbfonts[cmap].ascii_enc;
	}

	prt_ps_font = &prt_ps_mb_font;
    }
    else
    {
	prt_use_courier = FALSE;
	prt_ps_font = &prt_ps_courier_font;
    }

    /*
     * Find the size of the paper and set the margins.
     */
    prt_portrait = (!printer_opts[OPT_PRINT_PORTRAIT].present
	   || TOLOWER_ASC(printer_opts[OPT_PRINT_PORTRAIT].string[0]) == 'y');
    if (printer_opts[OPT_PRINT_PAPER].present)
    {
	paper_name = (char *)printer_opts[OPT_PRINT_PAPER].string;
	paper_strlen = printer_opts[OPT_PRINT_PAPER].strlen;
    }
    else
    {
	paper_name = "A4";
	paper_strlen = 2;
    }
    for (i = 0; i < (int)PRT_MEDIASIZE_LEN; ++i)
	if (STRLEN(prt_mediasize[i].name) == (unsigned)paper_strlen
		&& STRNICMP(prt_mediasize[i].name, paper_name,
							   paper_strlen) == 0)
	    break;
    if (i == PRT_MEDIASIZE_LEN)
	i = 0;
    prt_media = i;

    /*
     * Set PS pagesize based on media dimensions and print orientation.
     * Note: Media and page sizes have defined meanings in PostScript and should
     * be kept distinct.  Media is the paper (or transparency, or ...) that is
     * printed on, whereas the page size is the area that the PostScript
     * interpreter renders into.
     */
    if (prt_portrait)
    {
	prt_page_width = prt_mediasize[i].width;
	prt_page_height = prt_mediasize[i].height;
    }
    else
    {
	prt_page_width = prt_mediasize[i].height;
	prt_page_height = prt_mediasize[i].width;
    }

    /*
     * Set PS page margins based on the PS pagesize, not the mediasize - this
     * needs to be done before the cpl and lpp are calculated.
     */
    prt_page_margins(prt_page_width, prt_page_height, &left, &right, &top,
								    &bottom);
    prt_left_margin = (float)left;
    prt_right_margin = (float)right;
    prt_top_margin = (float)top;
    prt_bottom_margin = (float)bottom;

    /*
     * Set up the font size.
     */
    fontsize = PRT_PS_DEFAULT_FONTSIZE;
    for (p = p_pfn; (p = vim_strchr(p, ':')) != NULL; ++p)
	if (p[1] == 'h' && VIM_ISDIGIT(p[2]))
	    fontsize = atoi((char *)p + 2);
    prt_font_metrics(fontsize);

    /*
     * Return the number of characters per line, and lines per page for the
     * generic print code.
     */
    psettings->chars_per_line = prt_get_cpl();
    psettings->lines_per_page = prt_get_lpp();

    // Catch margin settings that leave no space for output!
    if (psettings->chars_per_line <= 0 || psettings->lines_per_page <= 0)
	return FAIL;

    /*
     * Sort out the number of copies to be printed.  PS by default will do
     * uncollated copies for you, so once we know how many uncollated copies are
     * wanted cache it away and lie to the generic code that we only want one
     * uncollated copy.
     */
    psettings->n_collated_copies = 1;
    psettings->n_uncollated_copies = 1;
    prt_num_copies = 1;
    prt_collate = (!printer_opts[OPT_PRINT_COLLATE].present
	    || TOLOWER_ASC(printer_opts[OPT_PRINT_COLLATE].string[0]) == 'y');
    if (prt_collate)
    {
	// TODO: Get number of collated copies wanted.
	psettings->n_collated_copies = 1;
    }
    else
    {
	// TODO: Get number of uncollated copies wanted and update the cached
	// count.
	prt_num_copies = 1;
    }

    psettings->jobname = jobname;

    /*
     * Set up printer duplex and tumble based on Duplex option setting - default
     * is long sided duplex printing (i.e. no tumble).
     */
    prt_duplex = TRUE;
    prt_tumble = FALSE;
    psettings->duplex = 1;
    if (printer_opts[OPT_PRINT_DUPLEX].present)
    {
	if (STRNICMP(printer_opts[OPT_PRINT_DUPLEX].string, "off", 3) == 0)
	{
	    prt_duplex = FALSE;
	    psettings->duplex = 0;
	}
	else if (STRNICMP(printer_opts[OPT_PRINT_DUPLEX].string, "short", 5)
									 == 0)
	    prt_tumble = TRUE;
    }

    // For now user abort not supported
    psettings->user_abort = 0;

    // If the user didn't specify a file name, use a temp file.
    if (psettings->outfile == NULL)
    {
	prt_ps_file_name = vim_tempname('p', TRUE);
	if (prt_ps_file_name == NULL)
	{
	    emsg(_(e_cant_get_temp_file_name));
	    return FAIL;
	}
	prt_ps_fd = mch_fopen((char *)prt_ps_file_name, WRITEBIN);
    }
    else
    {
	p = expand_env_save(psettings->outfile);
	if (p != NULL)
	{
	    prt_ps_fd = mch_fopen((char *)p, WRITEBIN);
	    vim_free(p);
	}
    }
    if (prt_ps_fd == NULL)
    {
	emsg(_(e_cant_open_postscript_output_file));
	mch_print_cleanup();
	return FAIL;
    }

    prt_bufsiz = psettings->chars_per_line;
    if (prt_out_mbyte)
	prt_bufsiz *= 2;
    ga_init2(&prt_ps_buffer, sizeof(char), prt_bufsiz);

    prt_page_num = 0;

    prt_attribute_change = FALSE;
    prt_need_moveto = FALSE;
    prt_need_font = FALSE;
    prt_need_fgcol = FALSE;
    prt_need_bgcol = FALSE;
    prt_need_underline = FALSE;

    prt_file_error = FALSE;

    return OK;
}

    static int
prt_add_resource(struct prt_ps_resource_S *resource)
{
    FILE*	fd_resource;
    char_u	resource_buffer[512];
    size_t	bytes_read;

    fd_resource = mch_fopen((char *)resource->filename, READBIN);
    if (fd_resource == NULL)
    {
	semsg(_(e_cant_open_file_str_2), resource->filename);
	return FALSE;
    }
    prt_dsc_resources("BeginResource", prt_resource_types[resource->type],
						     (char *)resource->title);

    prt_dsc_textline("BeginDocument", (char *)resource->filename);

    for (;;)
    {
	bytes_read = fread((char *)resource_buffer, sizeof(char_u),
			   sizeof(resource_buffer), fd_resource);
	if (ferror(fd_resource))
	{
	    semsg(_(e_cant_read_postscript_resource_file_str),
							    resource->filename);
	    fclose(fd_resource);
	    return FALSE;
	}
	if (bytes_read == 0)
	    break;
	prt_write_file_raw_len(resource_buffer, (int)bytes_read);
	if (prt_file_error)
	{
	    fclose(fd_resource);
	    return FALSE;
	}
    }
    fclose(fd_resource);

    prt_dsc_noarg("EndDocument");

    prt_dsc_noarg("EndResource");

    return TRUE;
}

    int
mch_print_begin(prt_settings_T *psettings)
{
    int		bbox[4];
    double      left;
    double      right;
    double      top;
    double      bottom;
    struct prt_ps_resource_S *res_prolog;
    struct prt_ps_resource_S *res_encoding;
    char	buffer[256];
    char_u      *p_encoding;
    struct prt_ps_resource_S *res_cidfont;
    struct prt_ps_resource_S *res_cmap;
    int		retval = FALSE;

    res_prolog = ALLOC_ONE(struct prt_ps_resource_S);
    res_encoding = ALLOC_ONE(struct prt_ps_resource_S);
    res_cidfont = ALLOC_ONE(struct prt_ps_resource_S);
    res_cmap = ALLOC_ONE(struct prt_ps_resource_S);
    if (res_prolog == NULL || res_encoding == NULL
	    || res_cidfont == NULL || res_cmap == NULL)
	goto theend;

    /*
     * PS DSC Header comments - no PS code!
     */
    prt_dsc_start();
    prt_dsc_textline("Title", (char *)psettings->jobname);
    if (!get_user_name((char_u *)buffer, 256))
	STRCPY(buffer, "Unknown");
    prt_dsc_textline("For", buffer);
    prt_dsc_textline("Creator", VIM_VERSION_LONG);
    // Note: to ensure Clean8bit I don't think we can use LC_TIME

    prt_dsc_textline("CreationDate", get_ctime(time(NULL), FALSE));
    prt_dsc_textline("DocumentData", "Clean8Bit");
    prt_dsc_textline("Orientation", "Portrait");
    prt_dsc_atend("Pages");
    prt_dsc_textline("PageOrder", "Ascend");
    // The bbox does not change with orientation - it is always in the default
    // user coordinate system!  We have to recalculate right and bottom
    // coordinates based on the font metrics for the bbox to be accurate.
    prt_page_margins(prt_mediasize[prt_media].width,
					    prt_mediasize[prt_media].height,
					    &left, &right, &top, &bottom);
    bbox[0] = (int)left;
    if (prt_portrait)
    {
	// In portrait printing the fixed point is the top left corner so we
	// derive the bbox from that point.  We have the expected cpl chars
	// across the media and lpp lines down the media.
	bbox[1] = (int)(top - (psettings->lines_per_page + prt_header_height())
						    * (double)prt_line_height);
	bbox[2] = (int)(left + psettings->chars_per_line
					       * (double)prt_char_width + 0.5);
	bbox[3] = (int)(top + 0.5);
    }
    else
    {
	// In landscape printing the fixed point is the bottom left corner so we
	// derive the bbox from that point.  We have lpp chars across the media
	// and cpl lines up the media.
	bbox[1] = (int)bottom;
	bbox[2] = (int)(left + ((psettings->lines_per_page
			      + prt_header_height()) * prt_line_height) + 0.5);
	bbox[3] = (int)(bottom + psettings->chars_per_line
					       * (double)prt_char_width + 0.5);
    }
    prt_dsc_ints("BoundingBox", 4, bbox);
    // The media width and height does not change with landscape printing!
    prt_dsc_docmedia(prt_mediasize[prt_media].name,
				prt_mediasize[prt_media].width,
				prt_mediasize[prt_media].height,
				(double)0, NULL, NULL);
    // Define fonts needed
    if (!prt_out_mbyte || prt_use_courier)
	prt_dsc_font_resource("DocumentNeededResources", &prt_ps_courier_font);
    if (prt_out_mbyte)
    {
	prt_dsc_font_resource((prt_use_courier ? NULL
				: "DocumentNeededResources"), &prt_ps_mb_font);
	if (!prt_custom_cmap)
	    prt_dsc_resources(NULL, "cmap", prt_cmap);
    }

    // Search for external resources VIM supplies
    if (!prt_find_resource("prolog", res_prolog))
    {
	semsg(_(e_cant_find_postscript_resource_file_str_ps), "prolog");
	goto theend;
    }
    if (!prt_open_resource(res_prolog))
	goto theend;
    if (!prt_check_resource(res_prolog, PRT_PROLOG_VERSION))
	goto theend;
    if (prt_out_mbyte)
    {
	// Look for required version of multi-byte printing procset
	if (!prt_find_resource("cidfont", res_cidfont))
	{
	    semsg(_(e_cant_find_postscript_resource_file_str_ps), "cidfont");
	    goto theend;
	}
	if (!prt_open_resource(res_cidfont))
	    goto theend;
	if (!prt_check_resource(res_cidfont, PRT_CID_PROLOG_VERSION))
	    goto theend;
    }

    // Find an encoding to use for printing.
    // Check 'printencoding'. If not set or not found, then use 'encoding'. If
    // that cannot be found then default to "latin1".
    // Note: VIM specific encoding header is always skipped.
    if (!prt_out_mbyte)
    {
	p_encoding = enc_skip(p_penc);
	if (*p_encoding == NUL
		|| !prt_find_resource((char *)p_encoding, res_encoding))
	{
	    // 'printencoding' not set or not supported - find alternate
	    int		props;

	    p_encoding = enc_skip(p_enc);
	    props = enc_canon_props(p_encoding);
	    if (!(props & ENC_8BIT)
		    || !prt_find_resource((char *)p_encoding, res_encoding))
		// 8-bit 'encoding' is not supported
	    {
		// Use latin1 as default printing encoding
		p_encoding = (char_u *)"latin1";
		if (!prt_find_resource((char *)p_encoding, res_encoding))
		{
		    semsg(_(e_cant_find_postscript_resource_file_str_ps),
			    p_encoding);
		    goto theend;
		}
	    }
	}
	if (!prt_open_resource(res_encoding))
	    goto theend;
	// For the moment there are no checks on encoding resource files to
	// perform
    }
    else
    {
	p_encoding = enc_skip(p_penc);
	if (*p_encoding == NUL)
	    p_encoding = enc_skip(p_enc);
	if (prt_use_courier)
	{
	    // Include ASCII range encoding vector
	    if (!prt_find_resource(prt_ascii_encoding, res_encoding))
	    {
		semsg(_(e_cant_find_postscript_resource_file_str_ps),
							  prt_ascii_encoding);
		goto theend;
	    }
	    if (!prt_open_resource(res_encoding))
		goto theend;
	    // For the moment there are no checks on encoding resource files to
	    // perform
	}
    }

    prt_conv.vc_type = CONV_NONE;
    if (!(enc_canon_props(p_enc) & enc_canon_props(p_encoding) & ENC_8BIT))
    {
	// Set up encoding conversion if required
	if (FAIL == convert_setup(&prt_conv, p_enc, p_encoding))
	{
	    semsg(_(e_unable_to_convert_to_print_encoding_str), p_encoding);
	    goto theend;
	}
	prt_do_conv = TRUE;
    }
    prt_do_conv = prt_conv.vc_type != CONV_NONE;

    if (prt_out_mbyte && prt_custom_cmap)
    {
	// Find user supplied CMap
	if (!prt_find_resource(prt_cmap, res_cmap))
	{
	    semsg(_(e_cant_find_postscript_resource_file_str_ps), prt_cmap);
	    goto theend;
	}
	if (!prt_open_resource(res_cmap))
	    goto theend;
    }

    // List resources supplied
    STRCPY(buffer, res_prolog->title);
    STRCAT(buffer, " ");
    STRCAT(buffer, res_prolog->version);
    prt_dsc_resources("DocumentSuppliedResources", "procset", buffer);
    if (prt_out_mbyte)
    {
	STRCPY(buffer, res_cidfont->title);
	STRCAT(buffer, " ");
	STRCAT(buffer, res_cidfont->version);
	prt_dsc_resources(NULL, "procset", buffer);

	if (prt_custom_cmap)
	{
	    STRCPY(buffer, res_cmap->title);
	    STRCAT(buffer, " ");
	    STRCAT(buffer, res_cmap->version);
	    prt_dsc_resources(NULL, "cmap", buffer);
	}
    }
    if (!prt_out_mbyte || prt_use_courier)
    {
	STRCPY(buffer, res_encoding->title);
	STRCAT(buffer, " ");
	STRCAT(buffer, res_encoding->version);
	prt_dsc_resources(NULL, "encoding", buffer);
    }
    prt_dsc_requirements(prt_duplex, prt_tumble, prt_collate,
#ifdef FEAT_SYN_HL
					psettings->do_syntax
#else
					0
#endif
					, prt_num_copies);
    prt_dsc_noarg("EndComments");

    /*
     * PS Document page defaults
     */
    prt_dsc_noarg("BeginDefaults");

    // List font resources most likely common to all pages
    if (!prt_out_mbyte || prt_use_courier)
	prt_dsc_font_resource("PageResources", &prt_ps_courier_font);
    if (prt_out_mbyte)
    {
	prt_dsc_font_resource((prt_use_courier ? NULL : "PageResources"),
							    &prt_ps_mb_font);
	if (!prt_custom_cmap)
	    prt_dsc_resources(NULL, "cmap", prt_cmap);
    }

    // Paper will be used for all pages
    prt_dsc_textline("PageMedia", prt_mediasize[prt_media].name);

    prt_dsc_noarg("EndDefaults");

    /*
     * PS Document prolog inclusion - all required procsets.
     */
    prt_dsc_noarg("BeginProlog");

    // Add required procsets - NOTE: order is important!
    if (!prt_add_resource(res_prolog))
	goto theend;
    if (prt_out_mbyte)
    {
	// Add CID font procset, and any user supplied CMap
	if (!prt_add_resource(res_cidfont))
	    goto theend;
	if (prt_custom_cmap && !prt_add_resource(res_cmap))
	    goto theend;
    }

    if (!prt_out_mbyte || prt_use_courier)
	// There will be only one Roman font encoding to be included in the PS
	// file.
	if (!prt_add_resource(res_encoding))
	    goto theend;

    prt_dsc_noarg("EndProlog");

    /*
     * PS Document setup - must appear after the prolog
     */
    prt_dsc_noarg("BeginSetup");

    // Device setup - page size and number of uncollated copies
    prt_write_int((int)prt_mediasize[prt_media].width);
    prt_write_int((int)prt_mediasize[prt_media].height);
    prt_write_int(0);
    prt_write_string("sps\n");
    prt_write_int(prt_num_copies);
    prt_write_string("nc\n");
    prt_write_boolean(prt_duplex);
    prt_write_boolean(prt_tumble);
    prt_write_string("dt\n");
    prt_write_boolean(prt_collate);
    prt_write_string("c\n");

    // Font resource inclusion and definition
    if (!prt_out_mbyte || prt_use_courier)
    {
	// When using Courier for ASCII range when printing multi-byte, need to
	// pick up ASCII encoding to use with it.
	if (prt_use_courier)
	    p_encoding = (char_u *)prt_ascii_encoding;
	prt_dsc_resources("IncludeResource", "font",
			  prt_ps_courier_font.ps_fontname[PRT_PS_FONT_ROMAN]);
	prt_def_font("F0", (char *)p_encoding, (int)prt_line_height,
		     prt_ps_courier_font.ps_fontname[PRT_PS_FONT_ROMAN]);
	prt_dsc_resources("IncludeResource", "font",
			  prt_ps_courier_font.ps_fontname[PRT_PS_FONT_BOLD]);
	prt_def_font("F1", (char *)p_encoding, (int)prt_line_height,
		     prt_ps_courier_font.ps_fontname[PRT_PS_FONT_BOLD]);
	prt_dsc_resources("IncludeResource", "font",
			  prt_ps_courier_font.ps_fontname[PRT_PS_FONT_OBLIQUE]);
	prt_def_font("F2", (char *)p_encoding, (int)prt_line_height,
		     prt_ps_courier_font.ps_fontname[PRT_PS_FONT_OBLIQUE]);
	prt_dsc_resources("IncludeResource", "font",
			  prt_ps_courier_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE]);
	prt_def_font("F3", (char *)p_encoding, (int)prt_line_height,
		     prt_ps_courier_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE]);
    }
    if (prt_out_mbyte)
    {
	// Define the CID fonts to be used in the job.	Typically CJKV fonts do
	// not have an italic form being a western style, so where no font is
	// defined for these faces VIM falls back to an existing face.
	// Note: if using Courier for the ASCII range then the printout will
	// have bold/italic/bolditalic regardless of the setting of printmbfont.
	prt_dsc_resources("IncludeResource", "font",
			  prt_ps_mb_font.ps_fontname[PRT_PS_FONT_ROMAN]);
	if (!prt_custom_cmap)
	    prt_dsc_resources("IncludeResource", "cmap", prt_cmap);
	prt_def_cidfont("CF0", (int)prt_line_height,
			prt_ps_mb_font.ps_fontname[PRT_PS_FONT_ROMAN]);

	if (prt_ps_mb_font.ps_fontname[PRT_PS_FONT_BOLD] != NULL)
	{
	    prt_dsc_resources("IncludeResource", "font",
			      prt_ps_mb_font.ps_fontname[PRT_PS_FONT_BOLD]);
	    if (!prt_custom_cmap)
		prt_dsc_resources("IncludeResource", "cmap", prt_cmap);
	    prt_def_cidfont("CF1", (int)prt_line_height,
			    prt_ps_mb_font.ps_fontname[PRT_PS_FONT_BOLD]);
	}
	else
	    // Use ROMAN for BOLD
	    prt_dup_cidfont("CF0", "CF1");

	if (prt_ps_mb_font.ps_fontname[PRT_PS_FONT_OBLIQUE] != NULL)
	{
	    prt_dsc_resources("IncludeResource", "font",
			      prt_ps_mb_font.ps_fontname[PRT_PS_FONT_OBLIQUE]);
	    if (!prt_custom_cmap)
		prt_dsc_resources("IncludeResource", "cmap", prt_cmap);
	    prt_def_cidfont("CF2", (int)prt_line_height,
			    prt_ps_mb_font.ps_fontname[PRT_PS_FONT_OBLIQUE]);
	}
	else
	    // Use ROMAN for OBLIQUE
	    prt_dup_cidfont("CF0", "CF2");

	if (prt_ps_mb_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE] != NULL)
	{
	    prt_dsc_resources("IncludeResource", "font",
			      prt_ps_mb_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE]);
	    if (!prt_custom_cmap)
		prt_dsc_resources("IncludeResource", "cmap", prt_cmap);
	    prt_def_cidfont("CF3", (int)prt_line_height,
			    prt_ps_mb_font.ps_fontname[PRT_PS_FONT_BOLDOBLIQUE]);
	}
	else
	    // Use BOLD for BOLDOBLIQUE
	    prt_dup_cidfont("CF1", "CF3");
    }

    // Misc constant vars used for underlining and background rects
    prt_def_var("UO", PRT_PS_FONT_TO_USER(prt_line_height,
						prt_ps_font->uline_offset), 2);
    prt_def_var("UW", PRT_PS_FONT_TO_USER(prt_line_height,
						 prt_ps_font->uline_width), 2);
    prt_def_var("BO", prt_bgcol_offset, 2);

    prt_dsc_noarg("EndSetup");

    // Fail if any problems writing out to the PS file
    retval = !prt_file_error;

theend:
    vim_free(res_prolog);
    vim_free(res_encoding);
    vim_free(res_cidfont);
    vim_free(res_cmap);

    return retval;
}

    void
mch_print_end(prt_settings_T *psettings)
{
    prt_dsc_noarg("Trailer");

    /*
     * Output any info we don't know in toto until we finish
     */
    prt_dsc_ints("Pages", 1, &prt_page_num);

    prt_dsc_noarg("EOF");

    // Write CTRL-D to close serial communication link if used.
    // NOTHING MUST BE WRITTEN AFTER THIS!
    prt_write_file((char_u *)"\004");

    if (!prt_file_error && psettings->outfile == NULL
					&& !got_int && !psettings->user_abort)
    {
	// Close the file first.
	if (prt_ps_fd != NULL)
	{
	    fclose(prt_ps_fd);
	    prt_ps_fd = NULL;
	}
	prt_message((char_u *)_("Sending to printer..."));

	// Not printing to a file: use 'printexpr' to print the file.
	if (eval_printexpr(prt_ps_file_name, psettings->arguments) == FAIL)
	    emsg(_(e_failed_to_print_postscript_file));
	else
	    prt_message((char_u *)_("Print job sent."));
    }

    mch_print_cleanup();
}

    int
mch_print_end_page(void)
{
    prt_flush_buffer();

    prt_write_string("re sp\n");

    prt_dsc_noarg("PageTrailer");

    return !prt_file_error;
}

    int
mch_print_begin_page(char_u *str UNUSED)
{
    int		page_num[2];

    prt_page_num++;

    page_num[0] = page_num[1] = prt_page_num;
    prt_dsc_ints("Page", 2, page_num);

    prt_dsc_noarg("BeginPageSetup");

    prt_write_string("sv\n0 g\n");
    prt_in_ascii = !prt_out_mbyte;
    if (prt_out_mbyte)
	prt_write_string("CF0 sf\n");
    else
	prt_write_string("F0 sf\n");
    prt_fgcol = PRCOLOR_BLACK;
    prt_bgcol = PRCOLOR_WHITE;
    prt_font = PRT_PS_FONT_ROMAN;

    // Set up page transformation for landscape printing.
    if (!prt_portrait)
    {
	prt_write_int(-((int)prt_mediasize[prt_media].width));
	prt_write_string("sl\n");
    }

    prt_dsc_noarg("EndPageSetup");

    // We have reset the font attributes, force setting them again.
    curr_bg = (long_u)0xffffffff;
    curr_fg = (long_u)0xffffffff;
    curr_bold = MAYBE;

    return !prt_file_error;
}

    int
mch_print_blank_page(void)
{
    return (mch_print_begin_page(NULL) ? (mch_print_end_page()) : FALSE);
}

static float prt_pos_x = 0;
static float prt_pos_y = 0;

    void
mch_print_start_line(int margin, int page_line)
{
    prt_pos_x = prt_left_margin;
    if (margin)
	prt_pos_x -= prt_number_width;

    prt_pos_y = prt_top_margin - prt_first_line_height -
					page_line * prt_line_height;

    prt_attribute_change = TRUE;
    prt_need_moveto = TRUE;
    prt_half_width = FALSE;
}

    int
mch_print_text_out(char_u *textp, int len UNUSED)
{
    char_u	*p = textp;
    int		need_break;
    char_u	ch;
    char_u      ch_buff[8];
    float       char_width;
    float       next_pos;
    int		in_ascii;
    int		half_width;
    char_u	*tofree = NULL;

    char_width = prt_char_width;

    // Ideally VIM would create a rearranged CID font to combine a Roman and
    // CJKV font to do what VIM is doing here - use a Roman font for characters
    // in the ASCII range, and the original CID font for everything else.
    // The problem is that GhostScript still (as of 8.13) does not support
    // rearranged fonts even though they have been documented by Adobe for 7
    // years!  If they ever do, a lot of this code will disappear.
    if (prt_use_courier)
    {
	in_ascii = (len == 1 && *p < 0x80);
	if (prt_in_ascii)
	{
	    if (!in_ascii)
	    {
		// No longer in ASCII range - need to switch font
		prt_in_ascii = FALSE;
		prt_need_font = TRUE;
		prt_attribute_change = TRUE;
	    }
	}
	else if (in_ascii)
	{
	    // Now in ASCII range - need to switch font
	    prt_in_ascii = TRUE;
	    prt_need_font = TRUE;
	    prt_attribute_change = TRUE;
	}
    }
    if (prt_out_mbyte)
    {
	half_width = ((*mb_ptr2cells)(p) == 1);
	if (half_width)
	    char_width /= 2;
	if (prt_half_width)
	{
	    if (!half_width)
	    {
		prt_half_width = FALSE;
		prt_pos_x += prt_char_width/4;
		prt_need_moveto = TRUE;
		prt_attribute_change = TRUE;
	    }
	}
	else if (half_width)
	{
	    prt_half_width = TRUE;
	    prt_pos_x += prt_char_width/4;
	    prt_need_moveto = TRUE;
	    prt_attribute_change = TRUE;
	}
    }

    // Output any required changes to the graphics state, after flushing any
    // text buffered so far.
    if (prt_attribute_change)
    {
	prt_flush_buffer();
	// Reset count of number of chars that will be printed
	prt_text_run = 0;

	if (prt_need_moveto)
	{
	    prt_pos_x_moveto = prt_pos_x;
	    prt_pos_y_moveto = prt_pos_y;
	    prt_do_moveto = TRUE;

	    prt_need_moveto = FALSE;
	}
	if (prt_need_font)
	{
	    if (!prt_in_ascii)
		prt_write_string("CF");
	    else
		prt_write_string("F");
	    prt_write_int(prt_font);
	    prt_write_string("sf\n");
	    prt_need_font = FALSE;
	}
	if (prt_need_fgcol)
	{
	    int     r, g, b;
	    r = ((unsigned)prt_fgcol & 0xff0000) >> 16;
	    g = ((unsigned)prt_fgcol & 0xff00) >> 8;
	    b = prt_fgcol & 0xff;

	    prt_write_real(r / 255.0, 3);
	    if (r == g && g == b)
		prt_write_string("g\n");
	    else
	    {
		prt_write_real(g / 255.0, 3);
		prt_write_real(b / 255.0, 3);
		prt_write_string("r\n");
	    }
	    prt_need_fgcol = FALSE;
	}

	if (prt_bgcol != PRCOLOR_WHITE)
	{
	    prt_new_bgcol = prt_bgcol;
	    if (prt_need_bgcol)
		prt_do_bgcol = TRUE;
	}
	else
	    prt_do_bgcol = FALSE;
	prt_need_bgcol = FALSE;

	if (prt_need_underline)
	    prt_do_underline = prt_underline;
	prt_need_underline = FALSE;

	prt_attribute_change = FALSE;
    }

    if (prt_do_conv)
    {
	// Convert from multi-byte to 8-bit encoding
	tofree = p = string_convert(&prt_conv, p, &len);
	if (p == NULL)
	{
	    p = (char_u *)"";
	    len = 0;
	}
    }

    if (prt_out_mbyte)
    {
	// Multi-byte character strings are represented more efficiently as hex
	// strings when outputting clean 8 bit PS.
	while (len-- > 0)
	{
	    ch = prt_hexchar[(unsigned)(*p) >> 4];
	    ga_append(&prt_ps_buffer, ch);
	    ch = prt_hexchar[(*p) & 0xf];
	    ga_append(&prt_ps_buffer, ch);
	    p++;
	}
    }
    else
    {
	// Add next character to buffer of characters to output.
	// Note: One printed character may require several PS characters to
	// represent it, but we only count them as one printed character.
	ch = *p;
	if (ch < 32 || ch == '(' || ch == ')' || ch == '\\')
	{
	    // Convert non-printing characters to either their escape or octal
	    // sequence, ensures PS sent over a serial line does not interfere
	    // with the comms protocol.
	    ga_append(&prt_ps_buffer, '\\');
	    switch (ch)
	    {
		case BS:   ga_append(&prt_ps_buffer, 'b'); break;
		case TAB:  ga_append(&prt_ps_buffer, 't'); break;
		case NL:   ga_append(&prt_ps_buffer, 'n'); break;
		case FF:   ga_append(&prt_ps_buffer, 'f'); break;
		case CAR:  ga_append(&prt_ps_buffer, 'r'); break;
		case '(':  ga_append(&prt_ps_buffer, '('); break;
		case ')':  ga_append(&prt_ps_buffer, ')'); break;
		case '\\': ga_append(&prt_ps_buffer, '\\'); break;

		default:
			   sprintf((char *)ch_buff, "%03o", (unsigned int)ch);
			   ga_append(&prt_ps_buffer, ch_buff[0]);
			   ga_append(&prt_ps_buffer, ch_buff[1]);
			   ga_append(&prt_ps_buffer, ch_buff[2]);
			   break;
	    }
	}
	else
	    ga_append(&prt_ps_buffer, ch);
    }

    // Need to free any translated characters
    vim_free(tofree);

    prt_text_run += char_width;
    prt_pos_x += char_width;

    // The downside of fp - use relative error on right margin check
    next_pos = prt_pos_x + prt_char_width;
    need_break = (next_pos > prt_right_margin) &&
		    ((next_pos - prt_right_margin) > (prt_right_margin*1e-5));

    if (need_break)
	prt_flush_buffer();

    return need_break;
}

    void
mch_print_set_font(int iBold, int iItalic, int iUnderline)
{
    int		font = 0;

    if (iBold)
	font |= 0x01;
    if (iItalic)
	font |= 0x02;

    if (font != prt_font)
    {
	prt_font = font;
	prt_attribute_change = TRUE;
	prt_need_font = TRUE;
    }
    if (prt_underline != iUnderline)
    {
	prt_underline = iUnderline;
	prt_attribute_change = TRUE;
	prt_need_underline = TRUE;
    }
}

    void
mch_print_set_bg(long_u bgcol)
{
    prt_bgcol = (int)bgcol;
    prt_attribute_change = TRUE;
    prt_need_bgcol = TRUE;
}

    void
mch_print_set_fg(long_u fgcol)
{
    if (fgcol == (long_u)prt_fgcol)
	return;

    prt_fgcol = (int)fgcol;
    prt_attribute_change = TRUE;
    prt_need_fgcol = TRUE;
}

# endif //FEAT_POSTSCRIPT
#endif //FEAT_PRINTER