Source Code 1992 March/Source_Code_CD-ROM_Walnut_Creek_March_1992.iso/usenet/altsrcs/3/3076

Internet Message Format | 1991-03-14 | 60KB

From: [e-mail] (joseph.a.brownlee)
Newsgroups: alt.sources
Subject: Pcal v4.0, part 4 of 5
Message-ID: <[e-mail]>
Date: 14 Mar 91 12:51:34 GMT

#!/bin/sh
# This is part 04 of a multipart archive
# ============= pcalinit.c ==============
if test -f 'pcalinit.c' -a X"$1" != X"-c"; then
    echo 'x - skipping pcalinit.c (File already exists)'
else
echo 'x - extracting pcalinit.c (Text)'
sed 's/^X//' << 'SHAR_EOF' > 'pcalinit.c' &&
/*
X * Create a .h file from a .ps file.  Strips out leading and trailing
X * whitespace, blank lines, and lines consisting solely of comments,
X * except for the very first block of comments/blanklines, which are
X * turned into C comments at the top of the file.
X *
X *   14-sep-90  Jamie Zawinski  created.
X *
X * Revision history:
X *
X *    4.0    AWR    02/25/91    added optional third argument for
X *                    name of array
X *
X *        AWR    02/19/91    added function prototypes; documented
X *
X *        AWR    01/16/91    Escape " and \ in quoted strings;
X *                    strip trailing comments; skip FF
X *
X *    2.6    JAB    10/18/90    Add exit(0).
X *
X *    2.3    JWZ    09/14/90    Author
X */
X
#include <stdio.h>
#include <ctype.h>
#include <string.h>
X
#if defined(__STDC__) || defined(AMIGA)
#define PROTOS
#endif
X
#define FALSE    0
#define TRUE    1
X
#define ARRAY_NAME    "header"    /* default name of array in .h file */
X
#define IS_WHITESPACE(c) \
X    ((c) == ' ' || (c) == '\t' || (c) == '\n' || c == '\f')
X
#define IS_POSTSCRIPT(s)    ((s)[0] != '%' && (s)[0] != '\0')
X
X
/*
X * strip_white: strip leading and trailing whitespace from 'string'; return
X * pointer to first non-whitespace character
X */
#ifdef PROTOS
char *strip_white (char *string)
#else
char *strip_white (string)
X     char *string;
#endif
{
X    int n;
X    for (; IS_WHITESPACE(*string); string++)
X    ;
X    n = strlen(string)-1;
X    for (; IS_WHITESPACE(string[n]); n--)
X    string[n] = '\0';
X    return string;
}
X
X
/*
X * strip_comment: strip comment and any preceding whitespace from 'string';
X * return pointer to 'string'
X */
#ifdef PROTOS
char *strip_comment (char *string)
#else
char *strip_comment (string)
X     char *string;
#endif
{
X    char *p;
X    if ((p = strchr(string, '%')) != NULL) {
X    *p = '\0';
X    string = strip_white(string);
X    }
X    return string;
}
X
X
/*
X * escape: copy string 'in' to string 'out', escaping the characters \ and ";
X * return pointer to 'out'
X */
#ifdef PROTOS
char *escape(char *out, char *in)
#else
char *escape(out, in)
X     char *out, *in;
#endif
{
X   char c, *sv_out = out;
X
X   for (; c = *in; *out++ = *in++)
X       if (c == '\\' || c == '"')
X      *out++ = '\\';
X
X   *out = '\0';
X   return sv_out;
}
X
X
#ifdef PROTOS
int main(int argc, char *argv[])
#else
int main (argc, argv)
X     int argc; char *argv[];
#endif
{
X    FILE *in, *out;
X    char line[256], line2[512], *L, *array;
X    int in_initial_comments = TRUE;
X
X    /* retrieve arguments and attempt to open input and output files */
X
X    if (argc < 3 || argc > 4) {
X       fprintf(stderr, "usage: %s <infile>.ps <outfile>.h [<arrayname>]\n",
X        argv[0]);
X       exit(-1); }
X
X    in = fopen(argv[1], "r");
X    if (NULL == in) {
X       fprintf(stderr, "%s: couldn't open %s\n", argv[0], argv[1]);
X       exit(-1); }
X
X    out = fopen(argv[2], "w");
X    if (NULL == out) {
X       fprintf(stderr, "%s: couldn't open %s\n", argv[0], argv[2]);
X       exit(-1); }
X
X    array = argc == 4 ? argv[3] : ARRAY_NAME;
X
X    /* print topline comment on output file */
X
X    fprintf (out, "/*\n * %s: automatically generated by %s from %s\n",
X       argv[2], argv[0], argv[1]);
X    fprintf (out, " *\n *\tDO NOT EDIT THIS FILE!\n *\n");
X
X    /* main loop - copy lines from input file, to output file, preserving
X     * only initial block of comments and blank lines
X     */
X
X    while ( fgets(line, 255, in) != NULL ) {
X       L = strip_white(line);            /* strip whitespace */
X
X       if ( IS_POSTSCRIPT(L) ) {        /* PostScript source? */
X      if ( in_initial_comments ) {        /* first PS line? */
X         in_initial_comments = FALSE;
X         fprintf(out, " */\n\nchar *%s[] = {\n", array);
X      }
X      L = strip_comment(L);            /* copy string to output */
X      L = escape(line2, L);
X      fprintf(out, "  \"%s\",\n", L);
X       } else                    /* blank or comment line */
X      if ( in_initial_comments )        /* copy only initial block */
X         fprintf(out, " * %s\n", L);
X    }
X
X    fprintf(out, "  (char *)0,\n};\n");        /* terminate array decl */
X
X    fclose(out);            /* close files and exit */
X    fclose(in);
X    exit (0);
}
SHAR_EOF
chmod 0644 pcalinit.c ||
echo 'restore of pcalinit.c failed'
Wc_c="`wc -c < 'pcalinit.c'`"
test 3975 -eq "$Wc_c" ||
    echo 'pcalinit.c: original size 3975, current size' "$Wc_c"
fi
# ============= pcalinit.ps ==============
if test -f 'pcalinit.ps' -a X"$1" != X"-c"; then
    echo 'x - skipping pcalinit.ps (File already exists)'
else
echo 'x - extracting pcalinit.ps (Text)'
sed 's/^X//' << 'SHAR_EOF' > 'pcalinit.ps' &&
% pcalinit.ps - provides the PostScript routines for pcal.c
%
% 4.0    modified by Andrew Rogers:
%
%    support -w ("whole year") option - cf. printmonth_[pl], startpage
%    moved all the calendar calculations to pcal.c and moonphas.c (q.v.)
%
%    support -B option (leave unused boxes blank)
%
%    support -O option (print "gray" numbers as outlines)
%
%    revised several of the basic routines and added some others; dates,
%    moons, text, Julian days are now relative to upper-left corner of box
%
%    enlarged title and dates in small calendars
%
% 3.0    modified by Andrew Rogers:
%
%    added xsval, ysval, xtval, ytval for scaling and translation
%    as per Ed Hand
%
%    added day-of-year support (-j, -J flags)
%
% 2.6    * no modifications *
%
% 2.5    modified by Joe Brownlee:
%
%    made day numbers smaller, providing more room for event text
%    repositioned event text and moons accordingly
%    added support for variable first day of week
%
% 2.4    * no modifications *
%
% 2.3    modified by Jamie Zawinski <[e-mail]>:
%
%    merged in moon routines (originally by Mark Hanson)
%
% 2.2    modified by Joe Brownlee:
%
%    add "notetext" to print notes in unused calendar box
%
% 2.1    modified by Mark Kantrowitz:
%
%    use symbolic names instead of magic numbers throughout
%    support -L, -C, -R, -n options (all new)
%    print holiday text in otherwise-wasted space next to date
%    use larger text for dates in large calendars
%
% 2.0    modified by Andrew W. Rogers:
%
%    skip printing days of week on small calendars
%    center month and year at top of calendar
%    use correct algorithm for leap year calculation
%    get month and day names from main program
%    use table to determine color (black/gray) of weekdays and holidays
%    use hanging indent to print continued text lines
X
/SM 0 def                % definitions for calendar sizes
/MED 1 def
/LG 2 def
X
/titlefontsize   [ 60 48 48 ] def    % font sizes for SM/MED/LG calendars
/datefontsize    [ 54 40 25 ] def
/weekdayfontsize [  0 24 12 ] def
/footfontsize 12 def
/notesfontsize 6 def
X
/titlepos [ 19 40 25 ] def        % Y-offset (SM/MED/LG) of month/year title
/Y0 35 def                % Y-coordinate of calendar grid origin
X
/daywidth 100 def            % dimensions of grid boxes
/dayheight 80 def
/gridwidth daywidth 7 mul def
/gridheight dayheight 6 mul def
/negdaywidth daywidth neg def
/negdayheight dayheight neg def
/neggridwidth gridwidth neg def
/neggridheight gridheight neg def
X
/gridlinewidth 1.0 def            % width of grid lines
/charlinewidth 0.1 def            % width of outline characters
/moonlinewidth 0.1 def            % width of moon icon line
/dategray 0.8 def            % density of gray for dates
/fillgray 0.9 def            % density of gray for fill squares
X
/hangingindent (   ) def        % for indenting continued text lines
X
X
%
% Utility functions:
%
X
X
/center {        % print string centered in given width
X    /width exch def
X    /str exch def
X    width str stringwidth pop sub 2 div 0 rmoveto str show
} def
X
X
/strcat {        % concatenate two strings
X    2 copy
X    length exch length
X    dup 3 -1 roll add
X    string
X    dup 0 6 -1 roll putinterval
X    dup 3 -1 roll 4 -1 roll putinterval
} def
X
X
/prtday {        % print the date in black, gray, or outline
X    day 3 string cvs                % convert to string
X    color (outline) eq {
X        true charpath stroke            % print as outline
X    }
X    {
X        color (gray) eq { dategray setgray } if    % print in gray
X        show
X    } ifelse
} def
X
X
/nextbox {        % go to next column or start of next row
X    day startday add 7 mod 0 eq                % end of week?
X        { neggridwidth daywidth add negdayheight rmoveto }  % next row
X        { daywidth 0 rmoveto }                    % next col
X    ifelse
} def
X
X
/datepos {        % push coords of upper-left corner of box for day <arg>
X    startday add 1 sub dup 7 mod daywidth mul        % x-coord
X    exch 7 idiv negdayheight mul Y0 add            % y-coord
} def
X
X
%
% Functions for drawing parts of calendar:
%
X
X
/drawtitle {        % draw month and year title
X    titlefont findfont titlefontsize calsize get scalefont setfont
X    /month_name month_names month 1 sub get def
X    /yearstring year 10 string cvs def
X    0 Y0 titlepos calsize get add moveto
X    month_name (  ) strcat yearstring strcat gridwidth center
} def
X
X
/drawdaynames {        % draw day names above respective columns
X    dayfont findfont weekdayfontsize calsize get scalefont setfont
X    0 1 6 {
X        /i exch def
X        i daywidth mul Y0 5 add moveto
X        day_names i get
X        daywidth center
X    } for
} def
X
X
/drawgrid {        % draw the grid for the calendar
X    gridlinewidth setlinewidth
X    0 daywidth gridwidth {            % vertical lines
X        Y0 moveto
X        0 neggridheight rlineto
X        stroke
X    } for
X    0 negdayheight neggridheight {        % horizontal lines
X        0 exch Y0 add moveto
X        gridwidth 0 rlineto
X        stroke
X    } for
} def
X
X
/drawnums {        % place day numbers on calendar
X    dayfont findfont datefontsize calsize get scalefont setfont
X    /fontdiff datefontsize calsize get datefontsize LG get sub def
X    charlinewidth setlinewidth
X    1 datepos 20 fontdiff add sub exch 5 add exch moveto
X
X    1 1 ndays {
X        /day exch def
X        /color (black) def
X        calsize SM ne {        % select alternate color
X            /gray day_gray day startday add 1 sub 7 mod get def
X            holidays { day eq { /gray holiday_gray def } if } forall
X            gray {
X                /color outline {(outline)} {(gray)} ifelse def
X            } if
X        } if
X        gsave
X        prtday
X        grestore
X        nextbox
X    } for
} def
X
X
/drawjnums {        % place day-of-year numbers on calendar
X    notesfont findfont notesfontsize scalefont setfont
X    1 datepos dayheight 3 sub sub exch daywidth 3 sub add exch moveto
X
X    1 1 ndays {
X        /day exch def
X        /jday jdstart day add 1 sub def
X        /str jday 3 string cvs def
X        julian-dates true eq {        % print days left in year?
X            /str str ( \050) strcat yearlen jday sub 3 string cvs
X                strcat (\051) strcat def
X        } if
X        gsave
X        str dup stringwidth pop 0 exch sub 0 rmoveto show
X        grestore
X        nextbox
X    } for
} def
X
X
/fillboxes {        % used by drawfill to generate row of fill squares
X    /last exch def        % last box to fill (0 = Sun)
X    /first exch def        % first box to fill (0 = Sun)
X    /width last first sub 1 add daywidth mul def
X
X    width 0 gt {
X        gsave
X        first daywidth mul 0 rmoveto
X        fillgray setgray
X        width 0 rlineto
X        0 negdayheight rlineto
X        width neg 0 rlineto
X        closepath fill
X        grestore
X    } if
} def
X
X
/drawfill {        % generate fill squares where necessary
X    /firstbox startday ndays add def
X    /lastbox calsize LG ne {41} { note_block {38} {39} ifelse } ifelse def
X
X    0 Y0 moveto            % boxes (if any) at start of first row
X    0 startday 1 sub fillboxes
X
X    0 4 negdayheight mul rmoveto    % boxes (if any) at end of fifth row
X    firstbox 35 lt {
X        firstbox 7 mod 6 fillboxes
X        /firstbox 35 def
X    } if
X
X    0 negdayheight rmoveto        % boxes at end of bottom row
X    firstbox 7 mod lastbox 7 mod fillboxes
} def
X
X
/footstrings {        % print foot strings at bottom of page
X    titlefont findfont footfontsize scalefont setfont
X    /bottomrow { neggridheight 20 add } def
X    0 bottomrow moveto
X    Lfootstring show
X    gridwidth Rfootstring stringwidth pop sub bottomrow moveto
X    Rfootstring show
X    0 bottomrow moveto
X    Cfootstring gridwidth center
} def
X
X
%
% Functions for printing text inside boxes:
%
X
X
/daytext {
X    notesfont findfont notesfontsize scalefont setfont
X    /mytext    exch def /day exch def
X    day datepos 29 sub dup /ypos exch def exch 2 add exch moveto
X    currentpoint pop /LM exch def /RM LM 95 add def
X    showtext
} def
X
X
/holidaytext {        % print text for holiday (next to date)
X    notesfont findfont notesfontsize scalefont setfont
X    /mytext    exch def /day exch def
X    /dwidth day 10 lt {20} {33} ifelse def        % width of date
X    /mwidth do-moon-p {16} {0} ifelse def        % width of moon icon
X    day datepos 8 sub dup /ypos exch def exch dwidth add exch moveto
X    currentpoint pop /LM exch def /RM LM 97 dwidth mwidth add sub add def
X    showtext
} def
X
X
/notetext {        % print text in notes box
X    dayfont findfont 12 scalefont setfont
X    /day 40 startday sub def        % "date" of notes box
X    day datepos 11 sub exch 4 add exch moveto
X    notesheading show
X
X    notesfont findfont notesfontsize scalefont setfont
X    /mytext    exch def
X    day datepos 19 sub dup /ypos exch def exch 4 add exch moveto
X    /LM currentpoint pop def /RM LM 93 add def
X    showtext
} def
X
X
/crlf {            % simulate CR/LF sequence
X    ypos notesfontsize sub /ypos exch def LM ypos moveto
} def
X
X
/prstr {        % print string on current or next line
X    dup stringwidth pop currentpoint pop
X    add RM gt { crlf hangingindent show } if show
} def
X
X
/showtext {        % print words in "mytext", splitting into lines
X    mytext {
X        dup linesep eq            % force new line?
X            { crlf pop }        % yes - discard text
X            { prstr ( ) show }    % no - print string + space
X        ifelse
X    } forall
} def
X
X
%
% Functions for printing months of various sizes and orientations:
%
X
X
/startpage {        % initialize new physical page
X    rval rotate
X    xsval ysval scale
X    xtval ytval translate
} def
X
X
/calendar        % draw calendar for month/year
{
X    drawtitle                    % month/year heading
X
X    calsize SM ne {                    % day names
X        drawdaynames
X    } if
X
X    calsize LG eq {                    % foot strings
X        footstrings
X    } if
X
X    drawnums                    % calendar dates
X
X    julian-dates false ne calsize LG eq and {    % julian dates
X        drawjnums
X    } if
X
X    fill-boxes {                    % fill unused boxes
X        drawfill
X    } if
X
X    drawgrid                    % calendar grid
X
X    draw-moons false ne calsize LG eq and {        % moon icons
X        drawmoons
X    } if
X
X    0 0 moveto                    % return to origin
} def
X
X
/printmonth_l {        % print month on landscape page ("posn" = 0..11)
X    /calsize MED def
X
X    posn 0 eq {        % assume first month printed on page is posn 0
X        startpage
X        footstrings
X    } if
X
X    gsave            % draw medium calendar at selected position
X    .226 .25 scale        % landscape mode - 3 rows, 4 cols
X    posn 4 mod 800 mul
X    posn 4 idiv -700 mul 150 add
X    translate
X    calendar
X    grestore
} def
X
X
/printmonth_p {        % print month on portrait page ("posn" = 0..11)
X    /calsize MED def
X    /footfontsize 15 def    % compensate for scaling
X
X    posn 0 eq {        % assume first month printed on page is posn 0
X        gsave        % print foot strings at original scale
X        startpage
X        0 20 translate  % move foot strings up slightly
X        footstrings
X        grestore    % re-scale Y axis for portrait mode
X        /sv_ysval ysval def
X        /ysval ysval 1.675 mul def
X        startpage
X        /ysval sv_ysval def
X    } if
X
X    gsave            % draw medium calendar at selected position
X    .304 .194 scale        % portrait mode - 4 rows, 3 cols
X    posn 3 mod 800 mul
X    posn 3 idiv -700 mul 300 add
X    translate
X    calendar
X    grestore
} def
X
X
/printmonth {        % print single month on page
X    startpage
X
X    /calsize LG def            % main (large) calendar
X    calendar
X
X    gsave                % small calendars
X    /calsize SM def
X    /sv_startday startday def
X
X    % calculate previous and next month, year, and starting day
X
X    /lmonth month 1 eq { 12 } { month 1 sub } ifelse def
X    /lyear  month 1 eq { year 1 sub } { year } ifelse def
X    /lstartday startday 35 add lndays sub 7 mod def
X    /nmonth month 12 eq { 1 } { month 1 add } ifelse def
X    /nyear  month 12 eq { year 1 add } { year } ifelse def
X    /nstartday startday ndays add 7 mod def
X
X    /year lyear def            % prev month/year
X    /month lmonth def
X    /startday lstartday def
X    /ndays lndays def
X    5 daywidth mul 5 negdayheight mul Y0 add translate
X    gsave
X    .138 .138 scale
X    12 -120 translate
X    calendar
X    grestore
X
X    /year nyear def            % next month/year
X    /month nmonth def
X    /startday nstartday def
X    /ndays nndays def
X    daywidth 0 translate
X    gsave
X    .138 .138 scale
X    12 -120 translate
X    calendar
X    grestore
X
X    /startday sv_startday def    % restore starting day (for text boxes)
X    grestore
} def
X
X
%
% Moon drawing functions:
%
X
X
/domoon {    % draw moon at phase (0 = new; .25 = 1q; .5 = full; .75 = 3q)
X    /phase exch def
X
X    gsave
X    currentpoint translate
X    newpath
X
X    % if moon is full, just draw unfilled circle
X
X    phase halfperiod .01 sub ge phase halfperiod .01 add le and {
X        0 0 radius
X        0 360 arc stroke
X    }
X    {
X        % draw the line arc now; prepare (but don't draw) the fill arc
X
X        0 0 radius            % for line and fill arcs
X        0 0 radius
X        phase halfperiod lt {        % phase between new and full
X            270 90 arc stroke    % (line on right, fill on left)
X            0 radius neg moveto
X            270 90 arcn
X        }
X        {                % phase between full and new
X            90 270 arc stroke    % (line on left, fill on right)
X            0 radius neg moveto
X            270 90 arc
X            /phase phase halfperiod sub def
X        } ifelse
X
X        % curveto uses (x0,y0) (current point), (x1,y1), (x2,y2),
X        % and (x3,y3) as the control points for drawing a Bezier
X        % cubic section, used here as the curve dividing the moon
X        % icon into dark and light sections.  x1 is in the range
X        % -R*sqrt(2) <= x1 <= R*sqrt(2) and y1 is in the range
X        % 0 <= y1 <= R; note that except in the degenerate case
X        % where x1 = y1 = x2 = y2 = 0, the curve does not actually
X        % pass through (x1,y1) or (x2,y2).
X
X        /x1 quartperiod phase sub rect mul def
X        /y1 x1 abs 2 sqrt div def
X
X        % push control points for curveto
X
X                    % x0 = 0   (current
X                    % y0 = R    point)
X        x1            % x1
X        y1            % y1
X        x1            % x2 = x1
X        y1 neg            % y2 = -y1
X        0            % x3 = 0
X        radius neg        % y3 = -R
X
X        % draw Bezier curve; fill area between curve and fill arc
X
X        curveto
X        fill
X    } ifelse
X
X    grestore
} def
X
X
/do-moon-p {        % draw a moon on "day"?
X    draw-moons (some) eq {        % printing quarter moons?  look up day
X        /p false def
X        quarter_moons { day eq { /p true def } if } forall
X        p
X    }
X    {
X        draw-moons        % all moons or no moons
X    } ifelse
} def
X
X
/drawmoons {        % main routine to draw moons on calendar
X    /halfperiod 0.5 def
X    /quartperiod 0.25 def
X    /radius 6 def
X    /offset radius 3 add def
X    /rect radius 2 sqrt mul quartperiod div def    % domoon{} scale factor
X    /n 0 def
X
X    gsave
X    moonlinewidth setlinewidth
X    1 datepos offset sub exch daywidth add offset sub exch moveto
X    1 1 ndays {
X        /day exch def
X        do-moon-p {            % draw a moon today?
X            moon_phases n get domoon
X            /n n 1 add def
X        } if
X    nextbox
X    } for
X    grestore
} def
SHAR_EOF
chmod 0666 pcalinit.ps ||
echo 'restore of pcalinit.ps failed'
Wc_c="`wc -c < 'pcalinit.ps'`"
test 13415 -eq "$Wc_c" ||
    echo 'pcalinit.ps: original size 13415, current size' "$Wc_c"
fi
# ============= pcallang.h ==============
if test -f 'pcallang.h' -a X"$1" != X"-c"; then
    echo 'x - skipping pcallang.h (File already exists)'
else
echo 'x - extracting pcallang.h (Text)'
sed 's/^X//' << 'SHAR_EOF' > 'pcallang.h' &&
/*
X * pcallang.h - language-dependent strings (month and day names, option file
X * keywords, preprocessor tokens, prepositions, etc.):
X *
X * Revision history:
X *
X *    4.0    AWR    03/01/91    expand parameter message to explain
X *                    parameter meaning when -w specified
X *
X *        AWR    02/19/91    revise ordinal definitions for
X *                    support of negative ordinals
X *
X *        AWR    02/06/91    add text describing expression syntax
X *
X *        AWR    02/04/91    support "odd" and "even" ordinals
X *
X *        AWR    01/28/91    support -B (blank fill squares) flag
X *                    and -O (outline "gray" dates) flag
X *
X *            01/16/91    added moon file support (tokens, help
X *                    file text, error messages); define
X *                    note block heading here
X *
X *            01/07/91    added support for -w (whole year) flag
X *
X *    3.0    AWR    12/10/90    added support for "workday", "weekday",
X *                    "holiday", et. al.
X *
X *        AWR    11/15/90    extracted from pcal.c; revised
X *                    to contain all language-dependent
X *                    strings
X */
X
#define ALL    "all"        /* command-line or date file keyword */
X
#ifdef MAIN_MODULE
X
char *months[12] = {
X    "January", "February", "March", "April", "May", "June",
X    "July", "August", "September", "October", "November", "December"
X    };
X
/* Must be a 2-D array so address within may be used as an initializer;
X * wildcard names must be in same order as symbolic names in pcaldefs.h
X */
char days[14][12] = {
X        "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
X        "Saturday",         /* weekday names */
X    "day", "weekday", "workday", "holiday", "nonweekday", "nonworkday",
X    "nonholiday"        /* wildcards */
X    };
X
/* preprocessor tokens: token name, token code, dispatch routine */
X
KWD_F pp_info[] = {
X    "define",    PP_DEFINE,    do_define,
X    "else",        PP_ELSE,    NULL,
X    "endif",    PP_ENDIF,    NULL,
X    "ifdef",    PP_IFDEF,    do_ifdef,
X    "ifndef",    PP_IFNDEF,    do_ifndef,
X    "include",    PP_INCLUDE,    NULL,        /* do_include */
X    "undef",    PP_UNDEF,    do_undef,
X    NULL,        PP_OTHER,    NULL };        /* must be last */
X
/* ordinal numbers - e.g. "first Monday in September": ordinal name,
X * ordinal code, ordinal value; note that "all" is parsed as a keyword
X * and (depending on context) may be subsequently treated as an ordinal
X */
X
KWD_O ordinals[] = {
X    "first",    ORD_POSNUM,     1,
X    "second",    ORD_POSNUM,     2,
X    "third",    ORD_POSNUM,     3,
X    "fourth",    ORD_POSNUM,     4,
X    "fifth",    ORD_POSNUM,     5,
X    "last",        ORD_NEGNUM,    -1,
X    "odd",        ORD_ODD,     0,
X    "even",        ORD_EVEN,     0,
X    NULL,        ORD_OTHER,     0 };        /* must be last */
X
/* allowable suffixes for ordinal numbers */
X
char *ord_suffix[] = { "st", "nd", "rd", "th", NULL };
X
/* prepositions - e.g., "Friday after fourth Thursday in November" */
X
KWD preps[] = {
X    "before",    PR_BEFORE,
X    "preceding",    PR_BEFORE,
X    "on_or_before",    PR_ON_BEFORE,
X    "oob",        PR_ON_BEFORE,
X    "after",    PR_AFTER,
X    "following",    PR_AFTER,
X    "on_or_after",    PR_ON_AFTER,
X    "ooa",        PR_ON_AFTER,
X    NULL,        PR_OTHER };    /* must be last */
X
/* other keywords */
X
KWD keywds[] = {
X    ALL,         DT_ALL,
X    "each",        DT_ALL,
X    "every",    DT_ALL,
X    "note",        DT_NOTE,
X    "opt",        DT_OPT,
X    "year",        DT_YEAR,
X    NULL,        DT_OTHER };    /* must be last */
X
/* moon phases (for moon file) */
X
KWD phases[] = {
X    "NM",        MOON_NM,    /* new moon */
X    "1Q",        MOON_1Q,    /* first quarter */
X    "FQ",        MOON_1Q,
X    "FM",        MOON_FM,    /* full moon */
X    "3Q",        MOON_3Q,    /* third (last) quarter */
X    "LQ",        MOON_3Q,
X    NULL,        MOON_OTHER };    /* must be last */
X
#else
extern char *months[];
extern char days[14][12];
extern KWD_F pp_info[];
extern KWD preps[];
extern KWD_O ordinals[];
extern char *ord_suffix[];
extern KWD keywds[];
extern KWD phases[];
#endif
X
/* minimum size of abbreviations  */
X
#define MIN_DAY_LEN    3
#define MIN_MONTH_LEN    3
#define MIN_PPTOK_LEN    3
#define MIN_PREP_LEN    7    /* distinguish "on_or_before", "on_or_after" */
#define MIN_ORD_LEN    3    /* distinguish "Thursday" from "third" */
X
X
/*
X * Symbolic names for command-line flags.  These may be changed
X * as desired in order to be meaningful in languages other than
X * English.
X */
X
#define F_INITIALIZE    'I'        /* re-initialize program defaults */
#define    F_BLACK_DAY    'b'        /* print day in black */
#define F_GRAY_DAY    'g'        /* print day in gray */
X
#define F_DAY_FONT    'd'        /* select alternate day font */
#define F_NOTES_FONT    'n'        /* select alternate notes font */
#define F_TITLE_FONT    't'        /* select alternate title font */
X
#define F_EMPTY_CAL    'e'        /* print empty calendar */
#define F_DATE_FILE    'f'        /* select alternate date file */
#define F_OUT_FILE    'o'        /* select alternate output file */
X
#define F_LANDSCAPE    'l'        /* landscape mode */
#define F_PORTRAIT    'p'        /* portrait mode */
X
#define F_HELP        'h'        /* generate help message */
X
#define F_MOON_4    'm'        /* print new/half/full moons */
#define F_MOON_ALL    'M'        /* print all moons */
X
#define F_DEFINE    'D'        /* define preprocessor symbol */
#define F_UNDEF        'U'        /* undefine preprocessor symbol */
X
#define F_L_FOOT    'L'        /* define left foot string */
#define F_C_FOOT    'C'        /* define center foot string */
#define F_R_FOOT    'R'        /* define right foot string */
X
#define F_FIRST_DAY    'F'        /* define alternate starting day */
X
#define F_USA_DATES    'A'        /* parse American date format */
#define F_EUR_DATES    'E'        /* parse European date format */
X
#define F_X_TRANS    'X'        /* X-axis transformation */
#define F_Y_TRANS    'Y'        /* Y-axis transformation */
#define F_X_SCALE    'x'        /* X-axis scale factor */
#define F_Y_SCALE    'y'        /* Y-axis scale factor */
X
#define F_JULIAN    'j'        /* print Julian day (day of year) */
#define F_JULIAN_ALL    'J'        /* print Julian day and days left */
X
#define F_WHOLE_YEAR    'w'        /* print whole year per page */
X                    /* (cf. W_WYFLAG below) */
X
#define F_BLANK_BOXES    'B'        /* don't fill unused boxes */
X
#define F_OUTLINE    'O'        /* draw "gray" dates as outlines */
X
/*
X * Flag usage information - not strictly language-dependent, but here anyway
X * (N.B.: all flags must be represented by an entry in this table!)
X *
X * Flags may appear in any of three places: in environment variable
X * PCAL_OPTS, on the command line, or in "opt" lines in the date file.
X * The command line is actually parsed twice: once before reading the date
X * file to get the flags needed in processing it (-e, -f, -b, -g, -D, -U, -A,
X * -E), and again after reading the date file to give the user one last
X * chance to override any of the other flags set earlier.  (Note, however,
X * that the only way to turn off -J|-j [Julian dates], -M|-m [moons], -w
X * [whole year], or -O [outline "gray" dates] once selected is to use -I
X * to reinitialize all program defaults.)
X *
X * The table below supplies the following information about each flag:
X *
X *    - Its name (cf. symbolic definitions above)
X *
X *    - Whether or not it can take an (optional) argument
X *
X *    - Which passes parse it: P_ENV (environment variable), P_CMD1
X *      (first command line pass), P_OPT ("opt" lines in date file),
X *      and P_CMD2 (second command line pass)
X *
X */
X
#ifdef MAIN_MODULE
X
FLAG_USAGE flag_tbl[] = {
X
/*    flag name    arg?    passes where parsed        */
X
X    F_INITIALIZE,    FALSE,    P_ENV | P_CMD1 | P_OPT | P_CMD2 ,
X
X    F_BLACK_DAY,    TRUE,    P_ENV | P_CMD1 | P_OPT          ,
X    F_GRAY_DAY,    TRUE,    P_ENV | P_CMD1 | P_OPT          ,
X
X    F_DAY_FONT,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_NOTES_FONT,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_TITLE_FONT,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_EMPTY_CAL,    FALSE,    P_ENV | P_CMD1                  ,
X    F_DATE_FILE,    TRUE,    P_ENV | P_CMD1                  ,
X    F_OUT_FILE,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_LANDSCAPE,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_PORTRAIT,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_HELP,        FALSE,            P_CMD1                  ,
X
X    F_MOON_4,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_MOON_ALL,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_DEFINE,    TRUE,    P_ENV | P_CMD1                  ,
X    F_UNDEF,    TRUE,    P_ENV | P_CMD1                  ,
X
X    F_L_FOOT,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_C_FOOT,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_R_FOOT,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_FIRST_DAY,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_USA_DATES,    FALSE,    P_ENV | P_CMD1 | P_OPT          ,
X    F_EUR_DATES,    FALSE,    P_ENV | P_CMD1 | P_OPT          ,
X
X    F_X_TRANS,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_Y_TRANS,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_X_SCALE,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_Y_SCALE,    TRUE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_JULIAN,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X    F_JULIAN_ALL,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_WHOLE_YEAR,    FALSE,    P_ENV | P_CMD1 | P_OPT          ,
X
X    F_BLANK_BOXES,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    F_OUTLINE,    FALSE,    P_ENV          | P_OPT | P_CMD2 ,
X
X    '-',        FALSE,    P_ENV | P_CMD1 | P_OPT | P_CMD2 ,
X    '\0',        FALSE,    P_ENV | P_CMD1 | P_OPT | P_CMD2        /* must be last */
X    };
X
#else
extern FLAG_USAGE flag_tbl[];
#endif
X
/*
X * Words used in usage() message - translate as necessary
X */
X
#define W_DEFAULT    "default"        /* translate as required */
#define W_USAGE        "Usage"
X
#define W_FONT        "FONT"            /* names of metavariables */
#define W_DAY        "DAY"
#define W_STRING    "STRING"
#define W_FILE        "FILE"
#define W_SYMBOL    "SYMBOL"
#define W_VALUE        "VALUE"
X
#define W_MM        "MM"            /* abbrev. for month, year */
#define W_YY        "YY"
X
#define W_WYFLAG    "-w"            /* must conform to F_WHOLE_YEAR */
X
#define W_BLACK        "black"            /* cf. color_msg() */
#define W_GRAY        "gray"
X
X
/* special flag_msg[] entries for end of option group, etc. */
X
#define END_GROUP    '\n', NULL, NULL, NULL        /* end of option group */
#define END_LIST    '\0', NULL, NULL, NULL        /* end of list */
#define GROUP_DEFAULT    ' ', NULL, " "            /* group default */
X
/*
X * Message strings to be printed by usage() - translate as necessary
X */
#ifdef MAIN_MODULE
X
FLAG_MSG flag_msg[] = {
X
/*    flag name    metasyntax    description                        default */
X
X    F_INITIALIZE,    NULL,        "initialize all parameters to program defaults",    NULL,
X    END_GROUP,
X
X    F_BLACK_DAY,    W_DAY,        "print weekday in black",                NULL,
X    F_GRAY_DAY,    W_DAY,        "print weekday in gray (see below)",                NULL,
X    END_GROUP,
X
X    F_OUTLINE,    NULL,        "print \"gray\" dates as outlined characters",            NULL,
X
X    END_GROUP,
X
X    F_DAY_FONT,    W_FONT,        "specify alternate day name font",            DAYFONT,
X    F_NOTES_FONT,    W_FONT,        "specify alternate notes font",                NOTESFONT,
X    F_TITLE_FONT,    W_FONT,        "specify alternate title font",                TITLEFONT,
X    END_GROUP,
X
X    F_EMPTY_CAL,    NULL,        "generate empty calendar (ignore date file)",        NULL,
X    END_GROUP,
X
X    F_DATE_FILE,    W_FILE,        "specify alternate date file",                DATEFILE,
X    END_GROUP,
X
#ifdef DEFAULT_OUTFILE
X    F_OUT_FILE,    W_FILE,        "specify alternate output file",            DEFAULT_OUTFILE,
#else
X    F_OUT_FILE,    W_FILE,        "specify alternate output file",            "stdout",
#endif
X    END_GROUP,
X
X    F_LANDSCAPE,    NULL,        "generate landscape-style calendar",            NULL,
X    F_PORTRAIT,    NULL,        "generate portrait-style calendar",            NULL,
#if ROTATE == LANDSCAPE
X    GROUP_DEFAULT,                                        "landscape",
#else
X    GROUP_DEFAULT,                                        "portrait",
#endif
X    END_GROUP,
X
X    F_HELP,        NULL,        "print this help message",                NULL,
X    END_GROUP,
X
X    F_MOON_4,    NULL,        "draw a \"moon\" icon at full/new/half moons",        NULL,
X    F_MOON_ALL,    NULL,        "draw a \"moon\" icon every day",            NULL,
#if DRAW_MOONS == NO_MOONS
X    GROUP_DEFAULT,                                        "no moons",
#else
#if DRAW_MOONS == SOME_MOONS
X    GROUP_DEFAULT,                                        "full/new/half moons",
#else
X    GROUP_DEFAULT,                                        "every day",
#endif
#endif
X    END_GROUP,
X
X    F_DEFINE,    W_SYMBOL,    "define preprocessor symbol",                NULL,
X    F_UNDEF,    W_SYMBOL,    "undefine preprocessor symbol",                NULL,
X    END_GROUP,
X
X    F_L_FOOT,    W_STRING,    "specify left foot string",                LFOOT,
X    F_C_FOOT,    W_STRING,    "specify center foot string",                CFOOT,
X    F_R_FOOT,    W_STRING,    "specify right foot string",                RFOOT,
X    END_GROUP,
X
X    F_FIRST_DAY,    W_DAY,        "specify starting day of week",                days[FIRST_DAY],
X    END_GROUP,
X
X    F_USA_DATES,    NULL,        "parse American dates (\"mm/dd{/yy}\" and \"month dd\")", NULL,
X    F_EUR_DATES,    NULL,        "parse European dates (\"dd/mm{/yy}\" and \"dd month\")", NULL,
#if DATE_STYLE == USA_DATES
X    GROUP_DEFAULT,                                        "American",
#else
X    GROUP_DEFAULT,                                        "European",
#endif
X    END_GROUP,
X
X    F_X_TRANS,    W_VALUE,    "specify x-axis translation",                XTVAL,
X    F_Y_TRANS,    W_VALUE,    "specify y-axis translation",                YTVAL,
X    F_X_SCALE,    W_VALUE,    "specify x-axis scale factor",                XSVAL,
X    F_Y_SCALE,    W_VALUE,    "specify y-axis scale factor",                YSVAL,
X    END_GROUP,
X
X    F_JULIAN,    NULL,        "print Julian day (day of year)",            NULL,
X    F_JULIAN_ALL,    NULL,        "print Julian day and days left in year",        NULL,
#if JULIAN_DATES == NO_JULIANS
X    GROUP_DEFAULT,                                        "neither",
#else
#if JULIAN_DATES == SOME_JULIANS
X    GROUP_DEFAULT,                                        "Julian day",
#else
X    GROUP_DEFAULT,                                        "both",
#endif
#endif
X    END_GROUP,
X
X    F_WHOLE_YEAR,    NULL,        "print whole year (12 consecutive months) per page",    NULL,
X    END_GROUP,
X
X    F_BLANK_BOXES,    NULL,        "leave unused boxes blank",                NULL,
X
X    END_GROUP,            /* must precede END_LIST */
X
X    END_LIST            /* must be last */
};
X
#else
extern FLAG_MSG flag_msg[];
#endif
X
/* Numeric parameter descriptions and text */
X
#ifdef MAIN_MODULE
X
#if __STDC__
PARAM_MSG param_msg[] = {
X    W_YY,            "generate calendar for year " W_YY " (19" W_YY " if " W_YY " < 100)",
X    W_MM " " W_YY,        "generate calendar for month " W_MM " (Jan = 1), year " W_YY,
X    W_MM " " W_YY " N",    "generate calendars for N months, starting at " W_MM "/" W_YY,
X    "(" W_DEFAULT ")",    "generate calendar for current month and/or year",
X    "",            "",
X    "if " W_WYFLAG " specified:",    "",
X    "",            "",
X    W_YY,            "generate calendar for year " W_YY " (19" W_YY " if " W_YY " < 100)",
X    W_MM " " W_YY,        "generate calendars for 12 months, starting at " W_MM "/" W_YY,
X    W_MM " " W_YY " N",    "generate calendars for N months, starting at " W_MM "/" W_YY,
X    "",            "  (N rounded up to next multiple of 12)",
X    "(" W_DEFAULT ")",    "generate calendar for current year",
X    NULL,        NULL        /* must be last */
};
#else
PARAM_MSG param_msg[] = {
X    "YY",        "generate calendar for year YY (19YY if YY < 100)",
X    "MM YY",    "generate calendar for month MM (Jan = 1), year YY",
X    "MM YY N",    "generate calendars for N months, starting at MM/YY",
X    "(default)",    "generate calendar for current month and year",
X    "",        "",
X    "if -w specified:",    "",
X    "",        "",
X    "YY",        "generate calendar for year YY (19YY if YY < 100)",
X    "MM YY",    "generate calendar for 12 months, starting at MM/YY",
X    "MM YY N",    "generate calendars for N months, starting at MM/YY",
X    "",        "  (N rounded up to next multiple of 12)",
X    "(default)",    "generate calendar for current year",
X    NULL,        NULL        /* must be last */
};
#endif
X
#else
extern PARAM_MSG param_msg[];
#endif
X
#define PARAM_MSGS    3    /* number of above to print in command-line syntax message */
X
/* Date file syntax message - lines are copied intact */
X
#ifdef MAIN_MODULE
X
char *date_msg[] = {
X    "",
X    "Date file syntax:",
X    "",
X    "The following rules describe the syntax of date file entries:",
X    "",
X    "  year <year>",
X    "",
X    "  opt <options>",
X    "",
X    "  note <month_spec> <text>",
X    "  note <month> <text>",
X    "",
X    "  if -A flag (American date formats) specified:",
X    "    <month_name> <day>{*} {<text>}",
X    "    <month><sep><day>{<sep><year>}{*} {<text>}",
X    "",
X    "  if -E flag (European date formats) specified:",
X    "    <day> <month_name>{*} {<text>}",
X    "    <day><sep><month>{<sep><year>}{*} {<text>}",
X    "",
X    "  <ordinal> <day_spec> in <month_spec>{*} {<text>}",
X    "  <day_spec> <prep> <date_spec>",
X    "",
X    "where",
X    "",
X    "  {x}          means x is optional",
X    "",
X    "  <date_spec> := any of the above date specs (not year, note, or opt)",
X    "  <month_name> := first 3+ characters of name of month, or \"all\"",
X    "  <month_spec> := <month_name>, or \"year\"",
X    "  <day_name> := first 3+ characters of name of weekday, \"day\",",
X    "                \"weekday\", \"workday\", \"holiday\", \"nonweekday\",",
X    "                \"nonworkday\", or \"nonholiday\"",
X    "  <ordinal> := ordinal number (\"1st\", \"2nd\", etc.), \"first\" .. \"fifth\",",
X    "                \"last\", \"even\", \"odd\", or \"all\"",
X    "  <prep> := \"before\", \"preceding\", \"after\", \"following\", \"on_or_before\",",
X    "                or \"on_or_after\"",
X    "  <sep> := one or more non-numeric, non-space, non-'*' characters",
X    "  <month>, <day>, <year> are the numeric forms",
X    "",
X    "  <options> := any command-line option except -e, -f, -h, -D, -U",
X    "",
X    "Comments start with '#' and run through end-of-line.",
X    "",
X    "Holidays may be flagged by specifying '*' as the last character of",
X    "the date field(s), e.g. \"10/12* Columbus Day\", \"July 4* Independence",
X    "Day\", etc.  Any dates flagged as holidays will be printed in gray, and",
X    "any associated text will appear adjacent to the date.",
X    "",
X    "Note that the numeric date formats (mm/dd{/yy}, dd.mm{.yy}) support",
X    "an optional year, which will become the subsequent default year.  The",
X    "alphabetic date formats (month dd, dd month) do not support a year",
X    "field; the \"year yy\" command is provided to reset the default year.",
X    "",
X    "\"Floating\" days may be specified in the date file as \"first Mon in ",
X    "Sep\", \"last Mon in May\", \"4th Thu in Nov\", etc.; any word may be",
X    "used in place of \"in\".  \"Relative floating\" days (e.g. \"Fri after 4th ",
X    "Thu in Nov\") are also accepted; they may span month/year bounds.",
X    "Pcal also accepts date specs such as \"all Friday{s} in October\", \"last",
X    "Thursday in all\", etc., and produces the expected results; \"each\" and",
X    "\"every\" are accepted as synonyms for \"all\".  Negative ordinals are",
X    "allowed; \"-2nd\" means \"next to last\".",
X    "",
X    "The words \"day\", \"weekday\", \"workday\", and \"holiday\" may be used as",
X    "wildcards: \"day\" matches any day, \"weekday\" matches any day normally",
X    "printed in black, \"workday\" matches any day normally printed in black",
X    "and not explicitly flagged as a holiday, and \"holiday\" matches any",
X    "day explicitly flagged as a holiday.  \"Nonweekday\", \"nonworkday\",",
X    "and \"nonholiday\" are also supported and have the obvious meanings.",
X    "",
X    "\"Odd\" and \"even\" do not refer to the actual date; instead, \"odd\"",
X    "means \"alternate, starting with the first\"; \"even\" means \"alternate,",
X    "starting with the second\".  Thus, \"odd Fridays in March\" refers to",
X    "the first, third, and (if present) fifth Fridays in March - not to",
X    "those Fridays falling on odd dates.",
X    "",
X    "\"All\" refers to each individual month; \"year\" refers to the year",
X    "as an entity.  Thus \"odd Fridays in all\" refers to the first/third/",
X    "fifth Friday of each month, while \"odd Fridays in year\" refers to",
X    "the first Friday of January and every other Friday thereafter.",
X    "",
X    "Additional notes may be propagated to an empty calendar box by the",
X    "inclusion of one or more lines of the form \"note <month> <text>\",",
X    "where <month> may be numeric or alphabetic; \"note all <text>\"",
X    "propagates <text> to each month in the current year.",
X    "",
X    "Simple cpp-like functionality is provided.  The date file may include",
X    "the following commands, which work like their cpp counterparts:",
X    "",
X    "        define <sym>",
X    "        undef <sym>",
X    "",
X    "        if{n}def <expr>",
X    "           ...",
X    "        { else",
X    "           ... }",
X    "        endif",
X    "",
X    "        include <file>",
X    "",
X    "Note that these do not start with '#', which is reserved as a comment",
X    "character.",
X    "",
X    "<sym> is a symbol name consisting of a letter followed by zero or",
X    "more letters, digits, or underscores ('_').  Symbol names are always",
X    "treated in a case-insensitive manner.",
X    "",
X    "<expr> is an expression consisting of symbol names joined by the logical",
X    "operators (in order of precedence, high to low) '!' (unary negate), '&'",
X    "(and), '^' (exclusive or), and '|' (inclusive or).  '&&' and '||' are",
X    "accepted as synonyms for '&' and '|' respectively; the order of",
X    "evaluation may be altered by the use of parentheses.  A symbol whose",
X    "name is currently defined evaluates to TRUE; one whose name is not",
X    "currently defined evaluates to FALSE.  Thus \"ifdef A | B | C\" is TRUE",
X    "if any of the symbols A, B, and C is currently defined, and",
X    "\"ifdef A & B & C\" is TRUE if all of them are.",
X    "",
X    "\"ifndef A | B | C\" is equivalent to \"ifdef !(A | B | C)\" (or, using",
X    "DeMorgan's Law, \"ifdef !A & !B & !C\") - in other words, TRUE if none of",
X    "the symbols A, B, and C is currently defined.",
X    "",
X    "\"define\" alone deletes all the current definitions; \"ifdef\" alone is",
X    "always false; \"ifndef\" alone is always true.",
X    "",
X    "The file name in the \"include\" directive may optionally be surrounded",
X    "by \"\" or <>.  In any case, path names are taken to be relative to",
X    "the location of the file containing the \"include\" directive.",
X    "",
X    "",
X    "Moon file syntax:",
X    "",
X    "Pcal normally calculates the approximate phase of the moon using",
X    "a simple algorithm which assumes (among other things) that the",
X    "length of the lunar month is constant and that the quarter moons",
X    "will occur on the same day worldwide.  For most users, that is",
X    "adequate; however, moon-phase freaks may enter the dates and",
X    "(optionally) times of quarter moons (from a reliable source such",
X    "as an almanac or astronomical table) into a file called .moonXX ",
X    "(moonXX.dat on VMS), where XX is the last two digits of the year.",
X    "If such a file exists (in the same directory as the date file),",
X    "pcal will interpolate the phase of the moon from the information",
X    "in this file instead of using the default algorithm.",
X    "",
X    "Entries in the moon file must conform to the following syntax:",
X    "",
X    "  if -A flag (American date formats) specified:",
X    "    <quarter> <month><sep><day> {<hour><sep><min>}",
X    "",
X    "  if -E flag (European date formats) specified:",
X    "    <quarter> <day><sep><month> {<hour><sep><min>}",
X    "",
X    "where",
X    "",
X    "  <quarter> := \"nm\", \"fq\" or \"1q\", \"fm\", \"3q\" or \"lq\" (new",
X    "                moon, first quarter, full moon, last quarter)",
X    "  <hour>    := number 0-23 (24-hour clock)",
X    "  <min>     := number 0-59",
X    "",
X    "This file must contain entries for all quarter moons in the year,",
X    "in chronological order; if any errors are encountered, pcal will",
X    "revert to using its default algorithm.",
X    "",
X    "As in the date file, comments start with '#' and run through",
X    "end-of-line.  ",
X    NULL
X    };
#else
extern char *date_msg[];
#endif
X
/* format strings for color_msg() - translate as necessary */
#define COLOR_MSG_1    "all days in %s"
#define COLOR_MSG_2    "in %s; others in %s"
X
/* format string for short usage() message */
#define USAGE_MSG    "enter \"%s -%c\" for full description of parameters\n"
X
/* format strings for comment in PostScript output file */
#define VERSION_MSG    "Generated by %s %s"
#define DATEFILE_MSG    " from %s"
X
#define NOTES_HDR    "Notes"        /* title of "notes" box */
#define LINE_SEP    ".p"        /* text line separator */
X
/* strings used in error messages */
#define ENV_VAR        "environment variable "
#define DATE_FILE    "date file "
X
/* Error and information messages - translate as necessary */
X
/* program error messages */
#define    E_ALLOC_ERR    "%s: calloc() failed - out of memory\n"
#define    E_FOPEN_ERR    "%s: can't open file %s\n"
#define    E_ILL_LINE    "%s: %s in file %s, line %d\n"
#define    E_ILL_MONTH    "%s: month %d not in range %d .. %d\n"
#define    E_ILL_OPT    "%s: unrecognized flag %s"
#define E_ILL_OPT2    " (%s\"%s\")"
#define    E_ILL_YEAR    "%s: year %d not in range %d .. %d\n"
#define    E_SYMFULL    "%s: symbol table full - can't define %s\n"
#define    E_UNT_IFDEF    "%s: unterminated if{n}def..{else..}endif in file %s\n"
#define E_FLAG_IGNORED    "%s: -%c flag ignored (%s\"%s\")\n"
X
/* preprocessor error strings */
#define E_ELSE_ERR    "unmatched \"else\""
#define E_END_ERR    "unmatched \"endif\""
#define E_GARBAGE    "extraneous data on \"%s\" line"
#define E_INV_DATE    "invalid date (or no match for wildcard)"
#define E_INV_LINE    "unrecognized line"
#define E_NESTING    "maximum file nesting level exceeded"
#define E_EXPR_SYNTAX    "syntax error in expression"
X
/* moon file error strings */
#define E_DATE_SEQ    "date or phase out of sequence"
#define E_PREM_EOF    "premature EOF"
X
/* information message (VMS, Amiga only) */
#define    I_OUT_NAME    "%s: output is in file %s\n"
X
SHAR_EOF
chmod 0666 pcallang.h ||
echo 'restore of pcallang.h failed'
Wc_c="`wc -c < 'pcallang.h'`"
test 23965 -eq "$Wc_c" ||
    echo 'pcallang.h: original size 23965, current size' "$Wc_c"
fi
# ============= pcalutil.c ==============
if test -f 'pcalutil.c' -a X"$1" != X"-c"; then
    echo 'x - skipping pcalutil.c (File already exists)'
else
echo 'x - extracting pcalutil.c (Text)'
sed 's/^X//' << 'SHAR_EOF' > 'pcalutil.c' &&
/*
X * pcalutil.c - utility routines for Pcal
X *
X * Contents:
X *
X *        alloc
X *        calc_day
X *        calc_weekday
X *        calc_year_day
X *        ci_strcmp
X *        ci_strncmp
X *        copy_text
X *        getline
X *        is_valid
X *        loadwords
X *        mk_filespec
X *        mk_path
X *        normalize
X *        split_date
X *        trnlog
X *
X * Revision history:
X *
X *    4.0    AWR    02/24/91    Revised getline() and copy_text() to
X *                    handle C-style escapes of characters
X *                    and octal/hex numbers
X *
X *        AWR    02/19/91    Added support for negative ordinals
X *                    in calc_day(), calc_year_day()
X *
X *        AWR    02/04/91    Added calc_year_day()
X *
X *        AWR    01/15/91    Extracted from pcal.c
X *
X */
X
X
/*
X * Standard headers:
X */
X
#include <stdio.h>
#include <ctype.h>
#include <string.h>
X
/*
X * Pcal-specific definitions:
X */
X
#include "pcaldefs.h"
#include "pcalglob.h"
#include "pcallang.h"
X
/*
X * Macros:
X */
X
/* skip over numeric field and subsequent non-numeric characters */
#define SKIP_FIELD(p) \
X    do { while (*p && isdigit(*p)) p++; \
X         while (*p && !isdigit(*p)) p++; } while (0)
X
X
/*
X * General-purpose utility routines
X */
X
X
/*
X * alloc - interface to calloc(); terminates if unsuccessful
X */
#ifdef PROTOS
char *alloc(int size)
#else
char *alloc(size)
X    int size;
#endif
{
X    char *p;
X
X    if (size == 0)        /* not all calloc()s like null requests */
X        size = 1;
X
X    if ((p = calloc(1, size)) == NULL) {
X        FPR(stderr, E_ALLOC_ERR, progname);
X        exit(EXIT_FAILURE);
X    }
X
X    return p;
}
X
X
/*
X * ci_str{n}cmp - case-insensitive flavors of strcmp(), strncmp()
X */
#ifdef PROTOS
int ci_strcmp(register char *s1,
X          register char *s2)
#else
int ci_strcmp(s1, s2)
register char *s1, *s2;
#endif
{
X    register char c1, c2;
X
X    for ( ; (c1 = TOLOWER(*s1)) == (c2 = TOLOWER(*s2)); s1++, s2++)
X        if (c1 == '\0')
X            return 0;
X
X    return c1 - c2;
}
X
X
#ifdef PROTOS
int ci_strncmp(register char *s1,
X           register char *s2,
X           int n)
#else
int ci_strncmp(s1, s2, n)
register char *s1, *s2;
int n;
#endif
{
X    register char c1, c2;
X
X    for ( ; --n >= 0 && (c1 = TOLOWER(*s1)) == (c2 = TOLOWER(*s2)); s1++, s2++)
X        if (c1 == '\0')
X            return 0;
X
X    return n < 0 ? 0 : c1 - c2;
}
X
X
/*
X * Date calculation routines (see also macros in pcaldefs.h)
X */
X
X
/*
X * normalize - adjust day in case it has crossed month (or year) bounds
X */
#ifdef PROTOS
void normalize(DATE *pd)
#else
void normalize(pd)
X    DATE *pd;        /* pointer to date */
#endif
{
X    int len;
X
X    /* adjust if day is in previous or following month */
X
X    while (pd->dd < 1) {
X        pd->yy = PREV_YEAR(pd->mm, pd->yy);
X        pd->mm = PREV_MONTH(pd->mm, pd->yy);
X        pd->dd += LENGTH_OF(pd->mm, pd->yy);
X    }
X
X    while (pd->dd > (len = LENGTH_OF(pd->mm, pd->yy))) {
X        pd->dd -= len;
X        pd->yy = NEXT_YEAR(pd->mm, pd->yy);
X        pd->mm = NEXT_MONTH(pd->mm, pd->yy);
X    }
}
X
X
/*
X * calc_day - calculate calendar date from ordinal date (e.g., "first Friday
X * in November", "last day in October"); return calendar date if it exists,
X * 0 if it does not
X */
#ifdef PROTOS
int calc_day(int ord,
X         int wkd,
X         int mm)
#else
int calc_day(ord, wkd, mm)
X    int ord;
X    int wkd;
X    int mm;
#endif
{
#ifdef PROTOS
X    int first, last, day, (*pfcn)(int, int, int);
#else
X    int first, last, day, (*pfcn)();
#endif
X
X    if (IS_WILD(wkd)) {    /* "day", "weekday", "workday", or "holiday" */
X        pfcn = pdatefcn[wkd - WILD_FIRST];
X        last = LENGTH_OF(mm, curr_year);
X
X        if (ord < 0) {            /* search backwards */
X            for (day = last;
X                 day >= 1 &&
X                !((*pfcn)(mm, day, curr_year) && ++ord == 0);
X                 day--)
X                ;
X        } else {            /* search forwards */
X            for (day = 1;
X                 day <= last &&
X                !((*pfcn)(mm, day, curr_year) && --ord == 0);
X                 day++)
X                ;
X        }
X        return is_valid(mm, day, curr_year) ? day : 0;
X
X    } else {        /* fixed weekday - calculate it */
X        first = (wkd - FIRST_OF(mm, curr_year) + 7) % 7 + 1;
X        if (ord < 0) {        /* get last (try 5th, then 4th) */
X            if (!is_valid(mm, last = first + 28, curr_year))
X                last -= 7;
X            if (!is_valid(mm, day = last + 7 * (ord + 1),
X                curr_year))
X                day = 0;
X        }
X        else
X            if (!is_valid(mm, day = first + 7 * (ord - 1),
X                curr_year))
X                day = 0;
X
X        return day;
X    }
X
}
X
X
/*
X * calc_year_day - calculate calendar date from ordinal date within year
X * (e.g., "last Friday in year", "10th holiday in year"); if date exists,
X * fill in pdate and return TRUE; else return FALSE
X */
#ifdef PROTOS
int calc_year_day(int ord,
X          int wkd,
X          DATE *pdate)
#else
int calc_year_day(ord, wkd, pdate)
X    int ord;
X    int wkd;
X    DATE *pdate;
#endif
{
#ifdef PROTOS
X    int incr, (*pfcn)(int, int, int);
#else
X    int incr, (*pfcn)();
#endif
X    DATE date;
X
X    if (IS_WILD(wkd)) {    /* "day", "weekday", "workday", or "holiday" */
X        pfcn = pdatefcn[wkd - WILD_FIRST];
X
X        if (ord < 0) {            /* nth occurrence backwards */
X            MAKE_DATE(date, DEC, 31, curr_year);
X            ord = -ord;
X            incr = -1;
X        } else {            /* nth occurrence forwards */
X            MAKE_DATE(date, JAN, 1, curr_year);
X            incr = 1;
X        }
X
X        /* search for selected occurrence of specified wildcard */
X
X        while (date.yy == curr_year &&
X               !((*pfcn)(date.mm, date.dd, date.yy) && --ord == 0)) {
X            date.dd += incr;
X            normalize(&date);
X        }
X
X    } else {        /* fixed weekday - calculate it */
X        if (ord < 0)
X            MAKE_DATE(date, DEC,
X                  calc_day(-1, wkd, DEC) + 7 * (ord + 1),
X                  curr_year);
X        else
X            MAKE_DATE(date, JAN,
X                  calc_day(1, wkd, JAN) + 7 * (ord - 1),
X                  curr_year);
X        normalize(&date);
X    }
X
X    return date.yy == curr_year ? (*pdate = date, TRUE) : FALSE;
}
X
X
/*
X * calc_weekday - return the weekday (0-6) of mm/dd/yy (mm: 1-12)
X */
#ifdef PROTOS
int calc_weekday(int mm,
X         int dd,
X         int yy)
#else
int calc_weekday(mm, dd, yy)
X    int mm;
X    int dd;
X    int yy;
#endif
{
X    return (yy + (yy-1)/4 - (yy-1)/100 + (yy-1)/400 + OFFSET_OF(mm, yy) +
X        (dd-1)) % 7;
}
X
X
/*
X * is_valid - return TRUE if m/d/y is a valid date
X */
#ifdef PROTOS
int is_valid(register int m,
X         register int d,
X         register int y)
#else
int is_valid(m, d, y)
X    register int m, d, y;
#endif
{
X    return m >= JAN && m <= DEC &&
X        d >= 1 && d <= LENGTH_OF(m, y);
}
X
X
X
/*
X * Token parsing/remerging routines:
X */
X
X
/*
X * loadwords - tokenize line buffer into word array, return word count.
X * differs from old loadwords() in that it handles quoted (" or ') strings
X * and removes escaped quotes
X */
#ifdef PROTOS
int loadwords(void)
#else
int loadwords()
#endif
{
X    register char *ptok;
X    char *delim, **ap, *p1, *p2, c;
X    int nwords;
X
X    for (ptok = lbuf, ap = words; TRUE; ap++) {
X
X        ptok += strspn(ptok, WHITESPACE); /* find next token */
X
X        if (! *ptok) {            /* end of lbuf? */
X            *ap = NULL;        /* add null ptr at end */
X            nwords = ap - words;    /* number of non-null ptrs */
X            break;            /* exit loop */
X            }
X
X        delim =    *ptok == '"'  ? "\"" :    /* set closing delimiter */
X            *ptok == '\'' ? "'"  :
X            WHITESPACE;
X
X        if (*ptok == *delim)        /* skip opening quote */
X            ptok++;
X
X        *ap = ptok;            /* save token ptr */
X
X        do {                /* find unescaped delimiter */
X            ptok += strcspn(ptok, delim);
X            if ((c = ptok[-1]) == '\\')
X                ptok++;
X        } while (c == '\\');
X
X        if (*ptok)            /* terminate token */
X            *ptok++ = '\0';
X    }
X
X    /* now reprocess the word list, removing escapes from quotes */
X
X    for (ap = words; *ap; *ap++)
X        for (p1 = p2 = *ap; c = *p2 = *p1++; *p2++)
X            if (c == '\\')
X                *p2 = *p1++;
X
X    return nwords;                /* return word count */
X
}
X
X
/*
X * copy_text - retrieve remaining text in lbuf and copy to output string,
X * separating tokens by a single blank and condensing runs of blanks (all
X * other whitespace has been converted to blanks by now) to one blank
X */
#ifdef PROTOS
void copy_text(char *pbuf,
X           char **ptext)
#else
void copy_text(pbuf, ptext)
X    char *pbuf;        /* output buffer - can be lbuf itself */
X    char **ptext;        /* pointer to first text word in "words" */
#endif
{
X    char *p, *pb;
X
X    /* copy words to pbuf, separating by one blank */
X
X    for (*(pb = pbuf) = '\0'; p = *ptext; *pb++ = *++ptext ? ' ' : '\0') {
X        for ( ; *p; *p++)
X            if (! (*p == ' ' && (pb == pbuf || pb[-1] == ' ')))
X                *pb++ = *p;
X        if (pb > pbuf && pb[-1] == ' ')
X            pb--;
X    }
}
X
X
/*
X * split_date - extract 1-3 numeric fields (separated by one or more
X * non-numeric characters) from date string; return number of fields
X */
#ifdef PROTOS
int split_date(char *pstr,
X           int *pn1,
X           int *pn2,
X           int *pn3)
#else
int split_date(pstr, pn1, pn2, pn3)
X    char *pstr;            /* input string */
X    int *pn1, *pn2, *pn3;        /* output numbers */
#endif
{
X    int i, n, *pn;
X
X    /* attempt to extract up to three numeric fields */
X    for (n = 0, i = 1; i <= 3; i++) {
X        pn = i == 1 ? pn1 : i == 2 ? pn2 : pn3;    /* crude but portable */
X        if (pn)
X            *pn = *pstr ? (n++, atoi(pstr)) : 0;
X        SKIP_FIELD(pstr);        /* go to next field */
X    }
X
X    return n;
}
X
X
X
/*
X * File input routines:
X */
X
X
/*
X * octal_esc - read up to 3 octal digits from file; return value of octal
X * constant and leave file pointer at last character
X */
#ifdef PROTOS
static int octal_esc(FILE *fp)
#else
static int octal_esc(fp)
X    FILE *fp;
#endif
{
X    int i, n, c;
X
X    for (n = 0, i = 0; i < 3; i++) {
X        c = getc(fp);
X        if (c == EOF)
X            return EOF;
X        if (!isodigit(c)) {
X            ungetc(c, fp);
X            break;
X        }
X        n = n * 8 + (c - '0');
X    }
X
X    return n & 0377;        /* truncate to 8 bits */
}
X
X
/*
X * hex_esc - read 'x' or 'X' followed by 1 or 2 hex digits from file; return
X * value of hexadecimal constant (or letter if no hex digits follow) and
X * leave file pointer at last character
X */
#ifdef PROTOS
static int hex_esc(FILE *fp)
#else
static int hex_esc(fp)
X    FILE *fp;
#endif
{
X    int i, n, c, sv_c;
X
X    sv_c = c = getc(fp);        /* read leading 'x' or 'X' */
X    if (TOLOWER(c) != 'x')
X        return c;        /* something else - just return it */
X
X    for (n = 0, i = 0; i < 2; i++) {
X        c = getc(fp);
X        if (c == EOF)
X            return EOF;
X        if (!isxdigit(c)) {
X            ungetc(c, fp);
X            break;
X        }
X        n = n * 16 + (isupper(c) ? c - 'A' + 10 :
X                  islower(c) ? c - 'a' + 10 :
X                  c - '0');
X    }
X
X    return i > 0 ? n & 0377 : sv_c;        /* truncate to 8 bits */
}
X
X
/*
X * getline - read next non-null line of input file into lbuf; return 0 on EOF
X * strip leading whitespace, translate other whitespace to blanks, and handle
X * all escapes except \' and \", (cf. loadwords())
X */
#ifdef PROTOS
int getline(FILE *fp,
X        int *pline)
#else
int getline(fp, pline)
X    FILE *fp;
X    int *pline;
#endif
{
X    register char *cp;
X    register int c, c2;
X    static char escape[] = "abfnrtv";    /* cf. ANSI spec, 2.2.2 */
X    int in_comment;        /* comments: from '#' to end-of-line */
X
X    cp = lbuf;
X    do {
X        in_comment = FALSE;
X        while ((c = getc(fp)) != '\n' && c != EOF) {
X            if (c == '#')
X                in_comment = TRUE;
X
X            if (isspace(c))        /* whitespace => blank */
X                c = ' ';
X
X            /* ignore comments and leading white space */
X            if (in_comment || (cp == lbuf && c == ' '))
X                continue;
X
X            /* handle escape sequences here: escaped whitespace
X             * and ANSI escapes are all converted to a space;
X             * octal and hex constants are converted in place
X             */
X            if (c == '\\') {
X                if ((c2 = getc(fp)) == EOF)
X                    return FALSE;
X
X                if (isspace(c2) || strchr(escape, c2)) {
X                    c = ' ';
X                    if (c2 == '\n')
X                        (*pline)++;
X                }
X                else if (isodigit(c2)) {    /* octal */
X                    ungetc(c2, fp);
X                    if((c = octal_esc(fp)) == EOF)
X                        return FALSE;
X                }
X                else if (TOLOWER(c2) == 'x') {    /* hex */
X                    ungetc(c2, fp);
X                    if((c = hex_esc(fp)) == EOF)
X                        return FALSE;
X                }
X                else if (c2 == '\'' || c2 == '"')
X                    ungetc(c2, fp);
X                else
X                    c = c2;
X
X            }
X            *cp++ = c;
X        }
X
X        if (c == EOF)            /* no more input lines */
X            return FALSE;
X
X        (*pline)++;            /* bump line number */
X
X    } while (cp == lbuf);            /* ignore empty lines */
X
X    *cp = '\0';
X    return TRUE;
}
X
X
/*
X * Routines dealing with translation of file specifications (VMS, Un*x)
X */
X
#ifdef VMS
/*
X * mk_path - extract the path component from VMS file spec
X */
#ifdef PROTOS
char *mk_path(char *path,
X          char *filespec)
#else
char *mk_path(path, filespec)
X    char *path;        /* output path */
X    char *filespec;        /* input filespec */
#endif
{
X    char *p;
X
X    strcpy(path, filespec);
X    if (!(p = strchr(path, ']')) && !(p = strchr(path, ':')))
X        p = path - 1;    /* return null string if no path */
X    *++p = '\0';
X
X    return path;
}
X
X
/*
X * mk_filespec - merge VMS path and file names, where latter can be relative
X */
#ifdef PROTOS
char *mk_filespec(char *filespec,
X          char *path,
X          char *name)
#else
char *mk_filespec(filespec, path, name)
X    char *filespec;        /* output filespec */
X    char *path;        /* input path */
X    char *name;        /* input file name */
#endif
{
X    char *p;
X
X    *filespec = '\0';
X
X    /* copy name intact if absolute; else merge path and relative name */
X    if (!strchr(name, ':')) {
X        strcpy(filespec, path);
X        if ((p = P_LASTCHAR(filespec)) && *p == END_PATH &&
X            name[0] == START_PATH && strchr(".-", name[1]))
X            *p = *++name == '-' ? '.' : '\0';
X    }
X
X    return strcat(filespec, name);
}
X
X
/*
X * trnlog - return translation of VMS logical name (null if missing)
X */
#ifdef PROTOS
char *trnlog(char *logname)
#else
char *trnlog(logname)    /* look up logical name */
X    char *logname;
#endif
{
X    static char trnbuf[STRSIZ];
X
X    $DESCRIPTOR(src, logname);
X    $DESCRIPTOR(dst, trnbuf);
X    short len;
X    int ret;
X
X    src.dsc$w_length  = strlen(logname);
X    ret = LIB$SYS_TRNLOG(&src, &len, &dst);
X    return ret == SS$_NORMAL ? (trnbuf[len] = '\0', trnbuf) : NULL;
}
X
#else        /* apparently DOS and Amiga can use the Un*x flavors */
X
/*
X * mk_path - extract the path component from a Un*x file spec
X */
#ifdef PROTOS
char *mk_path(char *path,
X          char *filespec)
#else
char *mk_path(path, filespec)
X    char *path;        /* output path */
X    char *filespec;        /* input filespec */
#endif
{
X    char *p;
X
X    strcpy(path, filespec);
X    if (! (p = strrchr(path, END_PATH)) )
X        p = path - 1;    /* return null string if no path */
X
X    *++p = '\0';
X    return path;
}
X
X
/*
X * mk_filespec - merge Un*x path and file names, where latter can be relative
X */
#ifdef PROTOS
char *mk_filespec(char *filespec,
X          char *path,
X          char *name)
#else
char *mk_filespec(filespec, path, name)
X    char *filespec;        /* output filespec */
X    char *path;        /* input path */
X    char *name;        /* input file name */
#endif
{
X    char *p;
X
X    *filespec = '\0';
X
X    /* copy name intact if absolute; else merge path and relative name */
X
X    /* if path starts with "~/", translate it for user */
X    if (strncmp(name, "~/", 2) == 0 && (p = trnlog(HOME_DIR)) != NULL) {
X        strcpy(filespec, p);
X        if ((p = P_LASTCHAR(filespec)) && *p != END_PATH)
X            *++p = END_PATH, *++p = '\0';
X        name += 2;        /* skip "~/" */
X    }
X    else if (*name != START_PATH) {        /* relative path */
X        strcpy(filespec, path);
X        if ((p = P_LASTCHAR(filespec)) && *p != END_PATH)
X            *++p = END_PATH, *++p = '\0';
X    }
X
X    return strcat(filespec, name);
}
X
X
/*
X * trnlog - return translation of Un*x environment variable
X */
#ifdef PROTOS
char *trnlog(char *logname)
#else
char *trnlog(logname)    /* look up logical name */
X    char *logname;
#endif
{
X    return getenv(logname);
}
X
#endif
SHAR_EOF
chmod 0644 pcalutil.c ||
echo 'restore of pcalutil.c failed'
Wc_c="`wc -c < 'pcalutil.c'`"
test 14737 -eq "$Wc_c" ||
    echo 'pcalutil.c: original size 14737, current size' "$Wc_c"
fi
true || echo 'restore of protos.h failed'
echo End of part 4, continue with part 5
exit 0