1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
35 /* ASCII driver options: (defaults listed first)
37 output-file="pspp.list"
39 form-feed-string="\f" Written as a formfeed.
40 newline-string=default|"\r\n"|"\n"
42 paginate=on|off Formfeeds are desired?
43 tab-width=8 Width of a tab; 0 to not use tabs.
44 init="" Written at beginning of output.
45 done="" Written at end of output.
47 headers=on|off Put headers at top of page?
50 lpi=6 Only used to determine font size.
52 squeeze=off|on Squeeze multiple newlines into exactly one.
59 box[x]="strng" Sets box character X (X in base 4: 0-3333).
60 italic-on=overstrike|"strng" Turns on italic (underline).
61 italic-off=""|"strng" Turns off italic; ignored for overstrike.
62 bold-on=overstrike|"strng" Turns on bold.
63 bold-off=""|"strng" Turns off bold; ignored for overstrike.
64 bold-italic-on=overstrike|"strng" Turns on bold-italic.
65 bold-italic-off=""|"strng" Turns off bold-italic; ignored for overstrike.
66 overstrike-style=single|line Can we print a whole line then BS over it, or
67 must we go char by char, as on a terminal?
68 carriage-return-style=bs|cr Must we return the carriage with a sequence of
69 BSes, or will a single CR do it?
72 /* Disable messages by failed range checks. */
73 /*#define SUPPRESS_WARNINGS 1 */
78 CHS_ASCII, /* 7-bit ASCII */
79 CHS_LATIN1 /* Latin 1; not really supported at the moment */
82 /* Overstrike style. */
85 OVS_SINGLE, /* Overstrike each character: "a\b_b\b_c\b_" */
86 OVS_LINE /* Overstrike lines: "abc\b\b\b___" (or if
87 newline is "\r\n", then "abc\r___"). Easier
88 on the printer, doesn't work on a tty. */
91 /* Basic output strings. */
94 OPS_INIT, /* Document initialization string. */
95 OPS_DONE, /* Document uninit string. */
96 OPS_FORMFEED, /* Formfeed string. */
97 OPS_NEWLINE, /* Newline string. */
99 OPS_COUNT /* Number of output strings. */
102 /* Line styles bit shifts. */
113 /* Carriage return style. */
116 CRS_BS, /* Multiple backspaces. */
117 CRS_CR /* Single carriage return. */
120 /* Assembles a byte from four taystes. */
121 #define TAYSTE2BYTE(T, L, B, R) \
123 | ((L) << LNS_LEFT) \
124 | ((B) << LNS_BOTTOM) \
125 | ((R) << LNS_RIGHT))
127 /* Extract tayste with shift value S from byte B. */
128 #define BYTE2TAYSTE(B, S) \
131 /* Font style; take one of the first group |'d with one of the second group. */
134 FSTY_ON = 000, /* Turn font on. */
135 FSTY_OFF = 001, /* Turn font off. */
137 FSTY_ITALIC = 0, /* Italic font. */
138 FSTY_BOLD = 2, /* Bold font. */
139 FSTY_BOLD_ITALIC = 4, /* Bold-italic font. */
141 FSTY_COUNT = 6 /* Number of font styles. */
144 /* A line of text. */
147 unsigned short *chars; /* Characters and attributes. */
148 int char_cnt; /* Length. */
149 int char_cap; /* Allocated bytes. */
152 /* ASCII output driver extension record. */
153 struct ascii_driver_ext
155 /* User parameters. */
156 int char_set; /* CHS_ASCII/CHS_LATIN1; no-op right now. */
157 int headers; /* 1=print headers at top of page. */
158 int page_length; /* Page length in lines. */
159 int page_width; /* Page width in characters. */
160 int lpi; /* Lines per inch. */
161 int cpi; /* Characters per inch. */
162 int left_margin; /* Left margin in characters. */
163 int right_margin; /* Right margin in characters. */
164 int top_margin; /* Top margin in lines. */
165 int bottom_margin; /* Bottom margin in lines. */
166 int paginate; /* 1=insert formfeeds. */
167 int tab_width; /* Width of a tab; 0 not to use tabs. */
168 struct len_string ops[OPS_COUNT]; /* Basic output strings. */
169 struct len_string box[LNS_COUNT]; /* Line & box drawing characters. */
170 struct len_string fonts[FSTY_COUNT]; /* Font styles; NULL=overstrike. */
171 int overstrike_style; /* OVS_SINGLE or OVS_LINE. */
172 int carriage_return_style; /* Carriage return style. */
173 int squeeze_blank_lines; /* 1=squeeze multiple blank lines into one. */
175 /* Internal state. */
176 struct file_ext file; /* Output file. */
177 int page_number; /* Current page number. */
178 struct line *lines; /* Page content. */
179 int lines_cap; /* Number of lines allocated. */
180 int w, l; /* Actual width & length w/o margins, etc. */
181 int cur_font; /* Current font by OUTP_F_*. */
183 int debug; /* Set by som_text_draw(). */
187 static int postopen (struct file_ext *);
188 static int preclose (struct file_ext *);
190 static struct outp_option_info *option_info;
193 ascii_open_global (struct outp_class *this UNUSED)
195 option_info = xmalloc ( sizeof (struct outp_option_info ) ) ;
196 option_info->initial = 0;
197 option_info->options = 0;
202 static unsigned char *s=0;
204 ascii_close_global (struct outp_class *this UNUSED)
206 free(option_info->initial);
207 free(option_info->options);
214 ascii_font_sizes (struct outp_class *this UNUSED, int *n_valid_sizes)
216 static int valid_sizes[] = {12, 12, 0, 0};
218 assert (n_valid_sizes);
224 ascii_preopen_driver (struct outp_driver *this)
226 struct ascii_driver_ext *x;
229 assert (this->driver_open == 0);
230 msg (VM (1), _("ASCII driver initializing as `%s'..."), this->name);
231 this->ext = x = xmalloc (sizeof (struct ascii_driver_ext));
232 x->char_set = CHS_ASCII;
241 x->bottom_margin = 2;
244 for (i = 0; i < OPS_COUNT; i++)
245 ls_null (&x->ops[i]);
246 for (i = 0; i < LNS_COUNT; i++)
247 ls_null (&x->box[i]);
248 for (i = 0; i < FSTY_COUNT; i++)
249 ls_null (&x->fonts[i]);
250 x->overstrike_style = OVS_SINGLE;
251 x->carriage_return_style = CRS_BS;
252 x->squeeze_blank_lines = 0;
253 x->file.filename = NULL;
256 x->file.sequence_no = &x->page_number;
258 x->file.postopen = postopen;
259 x->file.preclose = preclose;
263 x->cur_font = OUTP_F_R;
271 ascii_postopen_driver (struct outp_driver *this)
273 struct ascii_driver_ext *x = this->ext;
275 assert (this->driver_open == 0);
277 if (NULL == x->file.filename)
278 x->file.filename = xstrdup ("pspp.list");
280 x->w = x->page_width - x->left_margin - x->right_margin;
281 x->l = (x->page_length - (x->headers ? 3 : 0) - x->top_margin
282 - x->bottom_margin - 1);
283 if (x->w < 59 || x->l < 15)
285 msg (SE, _("ascii driver: Area of page excluding margins and headers "
286 "must be at least 59 characters wide by 15 lines long. Page as "
287 "configured is only %d characters by %d lines."), x->w, x->l);
291 this->res = x->lpi * x->cpi;
292 this->horiz = x->lpi;
294 this->width = x->w * this->horiz;
295 this->length = x->l * this->vert;
297 if (ls_null_p (&x->ops[OPS_FORMFEED]))
298 ls_create (&x->ops[OPS_FORMFEED], "\f");
299 if (ls_null_p (&x->ops[OPS_NEWLINE])
300 || !strcmp (ls_c_str (&x->ops[OPS_NEWLINE]), "default"))
302 ls_create (&x->ops[OPS_NEWLINE], "\n");
309 for (i = 0; i < LNS_COUNT; i++)
313 if (!ls_null_p (&x->box[i]))
317 case TAYSTE2BYTE (0, 0, 0, 0):
321 case TAYSTE2BYTE (0, 1, 0, 0):
322 case TAYSTE2BYTE (0, 1, 0, 1):
323 case TAYSTE2BYTE (0, 0, 0, 1):
327 case TAYSTE2BYTE (1, 0, 0, 0):
328 case TAYSTE2BYTE (1, 0, 1, 0):
329 case TAYSTE2BYTE (0, 0, 1, 0):
333 case TAYSTE2BYTE (0, 3, 0, 0):
334 case TAYSTE2BYTE (0, 3, 0, 3):
335 case TAYSTE2BYTE (0, 0, 0, 3):
336 case TAYSTE2BYTE (0, 2, 0, 0):
337 case TAYSTE2BYTE (0, 2, 0, 2):
338 case TAYSTE2BYTE (0, 0, 0, 2):
342 case TAYSTE2BYTE (3, 0, 0, 0):
343 case TAYSTE2BYTE (3, 0, 3, 0):
344 case TAYSTE2BYTE (0, 0, 3, 0):
345 case TAYSTE2BYTE (2, 0, 0, 0):
346 case TAYSTE2BYTE (2, 0, 2, 0):
347 case TAYSTE2BYTE (0, 0, 2, 0):
352 if (BYTE2TAYSTE (i, LNS_LEFT) > 1
353 || BYTE2TAYSTE (i, LNS_TOP) > 1
354 || BYTE2TAYSTE (i, LNS_RIGHT) > 1
355 || BYTE2TAYSTE (i, LNS_BOTTOM) > 1)
361 ls_create (&x->box[i], c);
368 this->cp_x = this->cp_y = 0;
369 this->font_height = this->vert;
370 this->prop_em_width = this->horiz;
371 this->fixed_width = this->horiz;
373 this->horiz_line_width[0] = 0;
374 this->vert_line_width[0] = 0;
376 for (i = 1; i < OUTP_L_COUNT; i++)
378 this->horiz_line_width[i] = this->vert;
379 this->vert_line_width[i] = this->horiz;
382 for (i = 0; i < (1 << OUTP_L_COUNT); i++)
384 this->horiz_line_spacing[i] = (i & ~1) ? this->vert : 0;
385 this->vert_line_spacing[i] = (i & ~1) ? this->horiz : 0;
389 this->driver_open = 1;
390 msg (VM (2), _("%s: Initialization complete."), this->name);
396 ascii_close_driver (struct outp_driver *this)
398 struct ascii_driver_ext *x = this->ext;
401 assert (this->driver_open == 1);
402 msg (VM (2), _("%s: Beginning closing..."), this->name);
405 for (i = 0; i < OPS_COUNT; i++)
406 ls_destroy (&x->ops[i]);
407 for (i = 0; i < LNS_COUNT; i++)
408 ls_destroy (&x->box[i]);
409 for (i = 0; i < FSTY_COUNT; i++)
410 ls_destroy (&x->fonts[i]);
411 if (x->lines != NULL)
415 for (line = 0; line < x->lines_cap; line++)
416 free (x->lines[line].chars);
419 fn_close_ext (&x->file);
420 free (x->file.filename);
423 this->driver_open = 0;
424 msg (VM (3), _("%s: Finished closing."), this->name);
429 /* Generic option types. */
439 static struct outp_option option_tab[] =
441 {"headers", boolean_arg, 0},
442 {"output-file", 1, 0},
444 {"length", pos_int_arg, 0},
445 {"width", pos_int_arg, 1},
446 {"lpi", pos_int_arg, 2},
447 {"cpi", pos_int_arg, 3},
448 {"init", string_arg, 0},
449 {"done", string_arg, 1},
450 {"left-margin", nonneg_int_arg, 0},
451 {"right-margin", nonneg_int_arg, 1},
452 {"top-margin", nonneg_int_arg, 2},
453 {"bottom-margin", nonneg_int_arg, 3},
454 {"paginate", boolean_arg, 1},
455 {"form-feed-string", string_arg, 2},
456 {"newline-string", string_arg, 3},
457 {"italic-on", font_string_arg, 0},
458 {"italic-off", font_string_arg, 1},
459 {"bold-on", font_string_arg, 2},
460 {"bold-off", font_string_arg, 3},
461 {"bold-italic-on", font_string_arg, 4},
462 {"bold-italic-off", font_string_arg, 5},
463 {"overstrike-style", 3, 0},
464 {"tab-width", nonneg_int_arg, 4},
465 {"carriage-return-style", 4, 0},
466 {"squeeze", boolean_arg, 2},
471 ascii_option (struct outp_driver *this, const char *key,
472 const struct string *val)
474 struct ascii_driver_ext *x = this->ext;
478 value = ds_c_str (val);
479 if (!strncmp (key, "box[", 4))
482 int indx = strtol (&key[4], &tail, 4);
483 if (*tail != ']' || indx < 0 || indx > LNS_COUNT)
485 msg (SE, _("Bad index value for `box' key: syntax is box[INDEX], "
486 "0 <= INDEX < %d decimal, with INDEX expressed in base 4."),
490 if (!ls_null_p (&x->box[indx]))
491 msg (SW, _("Duplicate value for key `%s'."), key);
492 ls_create (&x->box[indx], value);
496 cat = outp_match_keyword (key, option_tab, option_info, &subcat);
500 msg (SE, _("Unknown configuration parameter `%s' for ascii device driver."),
504 free (x->file.filename);
505 x->file.filename = xstrdup (value);
508 if (!strcmp (value, "ascii"))
509 x->char_set = CHS_ASCII;
510 else if (!strcmp (value, "latin1"))
511 x->char_set = CHS_LATIN1;
513 msg (SE, _("Unknown character set `%s'. Valid character sets are "
514 "`ascii' and `latin1'."), value);
517 if (!strcmp (value, "single"))
518 x->overstrike_style = OVS_SINGLE;
519 else if (!strcmp (value, "line"))
520 x->overstrike_style = OVS_LINE;
522 msg (SE, _("Unknown overstrike style `%s'. Valid overstrike styles "
523 "are `single' and `line'."), value);
526 if (!strcmp (value, "bs"))
527 x->carriage_return_style = CRS_BS;
528 else if (!strcmp (value, "cr"))
529 x->carriage_return_style = CRS_CR;
531 msg (SE, _("Unknown carriage return style `%s'. Valid carriage "
532 "return styles are `cr' and `bs'."), value);
540 arg = strtol (value, &tail, 0);
541 if (arg < 1 || errno == ERANGE || *tail)
543 msg (SE, _("Positive integer required as value for `%s'."), key);
549 x->page_length = arg;
571 arg = strtol (value, &tail, 0);
572 if (arg < 0 || errno == ERANGE || *tail)
574 msg (SE, _("Zero or positive integer required as value for `%s'."),
581 x->left_margin = arg;
584 x->right_margin = arg;
590 x->bottom_margin = arg;
602 struct len_string *s;
606 s = &x->ops[OPS_INIT];
609 s = &x->ops[OPS_DONE];
612 s = &x->ops[OPS_FORMFEED];
615 s = &x->ops[OPS_NEWLINE];
621 ls_create (s, value);
624 case font_string_arg:
626 if (!strcmp (value, "overstrike"))
628 ls_destroy (&x->fonts[subcat]);
631 ls_create (&x->fonts[subcat], value);
637 if (!strcmp (value, "on") || !strcmp (value, "true")
638 || !strcmp (value, "yes") || atoi (value))
640 else if (!strcmp (value, "off") || !strcmp (value, "false")
641 || !strcmp (value, "no") || !strcmp (value, "0"))
645 msg (SE, _("Boolean value expected for %s."), key);
651 x->headers = setting;
654 x->paginate = setting;
657 x->squeeze_blank_lines = setting;
670 postopen (struct file_ext *f)
672 struct ascii_driver_ext *x = f->param;
673 struct len_string *s = &x->ops[OPS_INIT];
675 if (!ls_empty_p (s) && fwrite (ls_c_str (s), ls_length (s), 1, f->file) < 1)
677 msg (ME, _("ASCII output driver: %s: %s"),
678 f->filename, strerror (errno));
685 preclose (struct file_ext *f)
687 struct ascii_driver_ext *x = f->param;
688 struct len_string *d = &x->ops[OPS_DONE];
690 if (!ls_empty_p (d) && fwrite (ls_c_str (d), ls_length (d), 1, f->file) < 1)
692 msg (ME, _("ASCII output driver: %s: %s"),
693 f->filename, strerror (errno));
700 ascii_open_page (struct outp_driver *this)
702 struct ascii_driver_ext *x = this->ext;
705 assert (this->driver_open && !this->page_open);
707 if (!fn_open_ext (&x->file))
709 msg (ME, _("ASCII output driver: %s: %s"), x->file.filename,
714 if (x->l > x->lines_cap)
716 x->lines = xrealloc (x->lines, sizeof *x->lines * x->l);
717 for (i = x->lines_cap; i < x->l; i++)
719 struct line *line = &x->lines[i];
726 for (i = 0; i < x->l; i++)
727 x->lines[i].char_cnt = 0;
733 /* Ensures that at least the first L characters of line I in the
734 driver identified by struct ascii_driver_ext *X have been cleared out. */
736 expand_line (struct ascii_driver_ext *x, int i, int l)
741 assert (i < x->lines_cap);
743 if (l > line->char_cap)
745 line->char_cap = l * 2;
746 line->chars = xrealloc (line->chars,
747 line->char_cap * sizeof *line->chars);
749 for (j = line->char_cnt; j < l; j++)
750 line->chars[j] = ' ';
754 /* Puts line L at (H,K) in the current output page. Assumes
755 struct ascii_driver_ext named `ext'. */
756 #define draw_line(H, K, L) \
757 ext->lines[K].chars[H] = (L) | 0x800
759 /* Line styles for each position. */
760 #define T(STYLE) (STYLE<<LNS_TOP)
761 #define L(STYLE) (STYLE<<LNS_LEFT)
762 #define B(STYLE) (STYLE<<LNS_BOTTOM)
763 #define R(STYLE) (STYLE<<LNS_RIGHT)
766 ascii_line_horz (struct outp_driver *this, const struct rect *r,
767 const struct color *c UNUSED, int style)
769 struct ascii_driver_ext *ext = this->ext;
770 int x1 = r->x1 / this->horiz;
771 int x2 = r->x2 / this->horiz;
772 int y1 = r->y1 / this->vert;
775 assert (this->driver_open && this->page_open);
780 || x1 < 0 || x1 >= ext->w
781 || x2 <= 0 || x2 > ext->w
782 || y1 < 0 || y1 >= ext->l)
784 #if !SUPPRESS_WARNINGS
785 printf (_("ascii_line_horz: bad hline (%d,%d),%d out of (%d,%d)\n"),
786 x1, x2, y1, ext->w, ext->l);
792 if (ext->lines[y1].char_cnt < x2)
793 expand_line (ext, y1, x2);
795 for (x = x1; x < x2; x++)
796 draw_line (x, y1, (style << LNS_LEFT) | (style << LNS_RIGHT));
800 ascii_line_vert (struct outp_driver *this, const struct rect *r,
801 const struct color *c UNUSED, int style)
803 struct ascii_driver_ext *ext = this->ext;
804 int x1 = r->x1 / this->horiz;
805 int y1 = r->y1 / this->vert;
806 int y2 = r->y2 / this->vert;
809 assert (this->driver_open && this->page_open);
814 || x1 < 0 || x1 >= ext->w
815 || y1 < 0 || y1 >= ext->l
816 || y2 < 0 || y2 > ext->l)
818 #if !SUPPRESS_WARNINGS
819 printf (_("ascii_line_vert: bad vline %d,(%d,%d) out of (%d,%d)\n"),
820 x1, y1, y2, ext->w, ext->l);
826 for (y = y1; y < y2; y++)
827 if (ext->lines[y].char_cnt <= x1)
828 expand_line (ext, y, x1 + 1);
830 for (y = y1; y < y2; y++)
831 draw_line (x1, y, (style << LNS_TOP) | (style << LNS_BOTTOM));
835 ascii_line_intersection (struct outp_driver *this, const struct rect *r,
836 const struct color *c UNUSED,
837 const struct outp_styles *style)
839 struct ascii_driver_ext *ext = this->ext;
840 int x = r->x1 / this->horiz;
841 int y = r->y1 / this->vert;
844 assert (this->driver_open && this->page_open);
846 if (x < 0 || x >= ext->w || y < 0 || y >= ext->l)
848 #if !SUPPRESS_WARNINGS
849 printf (_("ascii_line_intersection: bad intsct (%d,%d) out of (%d,%d)\n"),
850 x, y, ext->w, ext->l);
856 l = ((style->l << LNS_LEFT) | (style->r << LNS_RIGHT)
857 | (style->t << LNS_TOP) | (style->b << LNS_BOTTOM));
859 if (ext->lines[y].char_cnt <= x)
860 expand_line (ext, y, x + 1);
864 /* FIXME: Later we could set this up so that for certain devices it
867 ascii_box (struct outp_driver *this UNUSED, const struct rect *r UNUSED,
868 const struct color *bord UNUSED, const struct color *fill UNUSED)
870 assert (this->driver_open && this->page_open);
873 /* Polylines not supported. */
875 ascii_polyline_begin (struct outp_driver *this UNUSED, const struct color *c UNUSED)
877 assert (this->driver_open && this->page_open);
880 ascii_polyline_point (struct outp_driver *this UNUSED, int x UNUSED, int y UNUSED)
882 assert (this->driver_open && this->page_open);
885 ascii_polyline_end (struct outp_driver *this UNUSED)
887 assert (this->driver_open && this->page_open);
891 ascii_text_set_font_by_name (struct outp_driver * this, const char *s)
893 struct ascii_driver_ext *x = this->ext;
894 int len = strlen (s);
896 assert (this->driver_open && this->page_open);
897 x->cur_font = OUTP_F_R;
900 if (s[len - 1] == 'I')
902 if (len > 1 && s[len - 2] == 'B')
903 x->cur_font = OUTP_F_BI;
905 x->cur_font = OUTP_F_I;
907 else if (s[len - 1] == 'B')
908 x->cur_font = OUTP_F_B;
912 ascii_text_set_font_by_position (struct outp_driver *this, int pos)
914 struct ascii_driver_ext *x = this->ext;
915 assert (this->driver_open && this->page_open);
916 x->cur_font = pos >= 0 && pos < 4 ? pos : 0;
920 ascii_text_set_font_by_family (struct outp_driver *this UNUSED, const char *s UNUSED)
922 assert (this->driver_open && this->page_open);
926 ascii_text_get_font_name (struct outp_driver *this)
928 struct ascii_driver_ext *x = this->ext;
930 assert (this->driver_open && this->page_open);
948 ascii_text_get_font_family (struct outp_driver *this UNUSED)
950 assert (this->driver_open && this->page_open);
955 ascii_text_set_size (struct outp_driver *this, int size)
957 assert (this->driver_open && this->page_open);
958 return size == this->vert;
962 ascii_text_get_size (struct outp_driver *this, int *em_width)
964 assert (this->driver_open && this->page_open);
966 *em_width = this->horiz;
970 static void text_draw (struct outp_driver *this, struct outp_text *t);
972 /* Divides the text T->S into lines of width T->H. Sets T->V to the
973 number of lines necessary. Actually draws the text if DRAW is
976 You probably don't want to look at this code. */
978 delineate (struct outp_driver *this, struct outp_text *t, int draw)
980 /* Width we're fitting everything into. */
981 int width = t->h / this->horiz;
983 /* Maximum `y' position we can write to. */
986 /* Current position in string, character following end of string. */
987 const char *s = ls_c_str (&t->s);
988 const char *end = ls_end (&t->s);
990 /* Temporary struct outp_text to pass to low-level function. */
991 struct outp_text temp;
993 #if GLOBAL_DEBUGGING && 0
997 printf (_("%s: horiz=%d, vert=%d\n"), this->name, this->horiz, this->vert);
1009 temp.options = t->options;
1010 ls_shallow_copy (&temp.s, &t->s);
1011 temp.h = t->h / this->horiz;
1012 temp.x = t->x / this->horiz;
1016 temp.y = t->y / this->vert;
1018 if (t->options & OUTP_T_VERT)
1019 max_y = (t->v / this->vert) + temp.y - 1;
1023 while (end - s > width)
1025 const char *beg = s;
1028 /* Find first space before &s[width]. */
1034 if (!isspace ((unsigned char) space[-1]))
1043 s = space = &s[width];
1050 ls_init (&temp.s, beg, space - beg);
1051 temp.w = space - beg;
1052 text_draw (this, &temp);
1054 if (++temp.y > max_y)
1057 /* Find first nonspace after space. */
1058 while (s < end && isspace ((unsigned char) *s))
1065 ls_init (&temp.s, s, end - s);
1067 text_draw (this, &temp);
1072 t->v = (temp.y * this->vert) - t->y;
1076 ascii_text_metrics (struct outp_driver *this, struct outp_text *t)
1078 assert (this->driver_open && this->page_open);
1079 if (!(t->options & OUTP_T_HORZ))
1082 t->h = ls_length (&t->s) * this->horiz;
1085 delineate (this, t, 0);
1089 ascii_text_draw (struct outp_driver *this, struct outp_text *t)
1091 /* FIXME: orientations not supported. */
1092 assert (this->driver_open && this->page_open);
1093 if (!(t->options & OUTP_T_HORZ))
1095 struct outp_text temp;
1097 temp.options = t->options;
1099 temp.h = temp.v = 0;
1100 temp.x = t->x / this->horiz;
1101 temp.y = t->y / this->vert;
1102 text_draw (this, &temp);
1103 ascii_text_metrics (this, t);
1107 delineate (this, t, 1);
1111 text_draw (struct outp_driver *this, struct outp_text *t)
1113 struct ascii_driver_ext *ext = this->ext;
1114 unsigned attr = ext->cur_font << 8;
1119 char *s = ls_c_str (&t->s);
1121 /* Expand the line with the assumption that S takes up LEN character
1122 spaces (sometimes it takes up less). */
1125 assert (this->driver_open && this->page_open);
1126 switch (t->options & OUTP_T_JUST_MASK)
1128 case OUTP_T_JUST_LEFT:
1130 case OUTP_T_JUST_CENTER:
1131 x -= (t->h - t->w) / 2; /* fall through */
1132 case OUTP_T_JUST_RIGHT:
1139 if (!(t->y < ext->l && x < ext->w))
1141 min_len = min (x + ls_length (&t->s), ext->w);
1142 if (ext->lines[t->y].char_cnt < min_len)
1143 expand_line (ext, t->y, min_len);
1146 int len = ls_length (&t->s);
1148 if (len + x > ext->w)
1151 ext->lines[y].chars[x++] = *s++ | attr;
1155 /* ascii_close_page () and support routines. */
1157 #define LINE_BUF_SIZE 1024
1158 static unsigned char *line_buf;
1159 static unsigned char *line_p;
1162 commit_line_buf (struct outp_driver *this)
1164 struct ascii_driver_ext *x = this->ext;
1166 if ((int) fwrite (line_buf, 1, line_p - line_buf, x->file.file)
1167 < line_p - line_buf)
1169 msg (ME, _("Writing `%s': %s"), x->file.filename, strerror (errno));
1177 /* Writes everything from BP to EP exclusive into line_buf, or to
1178 THIS->output if line_buf overflows. */
1180 output_string (struct outp_driver *this, const char *bp, const char *ep)
1182 if (LINE_BUF_SIZE - (line_p - line_buf) >= ep - bp)
1184 memcpy (line_p, bp, ep - bp);
1190 if (LINE_BUF_SIZE - (line_p - line_buf) <= 1 && !commit_line_buf (this))
1196 /* Writes everything from BP to EP exclusive into line_buf, or to
1197 THIS->output if line_buf overflows. Returns 1 if additional passes
1198 over the line are required. FIXME: probably could do a lot of
1199 optimization here. */
1201 output_shorts (struct outp_driver *this,
1202 const unsigned short *bp, const unsigned short *ep)
1204 struct ascii_driver_ext *ext = this->ext;
1205 size_t remaining = LINE_BUF_SIZE - (line_p - line_buf);
1208 for (; bp < ep; bp++)
1212 struct len_string *box = &ext->box[*bp & 0xff];
1213 size_t len = ls_length (box);
1215 if (remaining >= len)
1217 memcpy (line_p, ls_c_str (box), len);
1223 if (!commit_line_buf (this))
1225 output_string (this, ls_c_str (box), ls_end (box));
1226 remaining = LINE_BUF_SIZE - (line_p - line_buf);
1229 else if (*bp & 0x0300)
1231 struct len_string *on;
1235 switch (*bp & 0x0300)
1238 on = &ext->fonts[FSTY_ON | FSTY_ITALIC];
1241 on = &ext->fonts[FSTY_ON | FSTY_BOLD];
1243 case OUTP_F_BI << 8:
1244 on = &ext->fonts[FSTY_ON | FSTY_BOLD_ITALIC];
1252 if (ext->overstrike_style == OVS_SINGLE)
1253 switch (*bp & 0x0300)
1267 case OUTP_F_BI << 8:
1290 output_string (this, buf, &buf[len]);
1299 if (!commit_line_buf (this))
1301 remaining = LINE_BUF_SIZE - (line_p - line_buf);
1309 /* Writes CH into line_buf N times, or to THIS->output if line_buf
1312 output_char (struct outp_driver *this, int n, int ch)
1314 if (LINE_BUF_SIZE - (line_p - line_buf) >= n)
1316 memset (line_p, ch, n);
1322 if (LINE_BUF_SIZE - (line_p - line_buf) <= 1 && !commit_line_buf (this))
1328 /* Advance the carriage from column 0 to the left margin. */
1330 advance_to_left_margin (struct outp_driver *this)
1332 struct ascii_driver_ext *ext = this->ext;
1335 margin = ext->left_margin;
1338 if (ext->tab_width && margin >= ext->tab_width)
1340 output_char (this, margin / ext->tab_width, '\t');
1341 margin %= ext->tab_width;
1344 output_char (this, margin, ' ');
1347 /* Move the output file carriage N_CHARS left, to the left margin. */
1349 return_carriage (struct outp_driver *this, int n_chars)
1351 struct ascii_driver_ext *ext = this->ext;
1353 switch (ext->carriage_return_style)
1356 output_char (this, n_chars, '\b');
1359 output_char (this, 1, '\r');
1360 advance_to_left_margin (this);
1368 /* Writes COUNT lines from the line buffer in THIS, starting at line
1371 output_lines (struct outp_driver *this, int first, int count)
1373 struct ascii_driver_ext *ext = this->ext;
1376 struct len_string *newline = &ext->ops[OPS_NEWLINE];
1381 if (NULL == ext->file.file)
1384 /* Iterate over all the lines to be output. */
1385 for (line_num = first; line_num < first + count; line_num++)
1387 struct line *line = &ext->lines[line_num];
1388 unsigned short *p = line->chars;
1389 unsigned short *end_p = p + line->char_cnt;
1390 unsigned short *bp, *ep;
1391 unsigned short attr = 0;
1393 assert (end_p >= p);
1395 /* Squeeze multiple blank lines into a single blank line if
1397 if (ext->squeeze_blank_lines
1399 && ext->lines[line_num].char_cnt == 0
1400 && ext->lines[line_num - 1].char_cnt == 0)
1403 /* Output every character in the line in the appropriate
1408 advance_to_left_margin (this);
1411 while (ep < end_p && attr == (*ep & 0x0300))
1413 if (output_shorts (this, bp, ep))
1421 /* Turn off old font. */
1422 if (attr != (OUTP_F_R << 8))
1424 struct len_string *off;
1429 off = &ext->fonts[FSTY_OFF | FSTY_ITALIC];
1432 off = &ext->fonts[FSTY_OFF | FSTY_BOLD];
1434 case OUTP_F_BI << 8:
1435 off = &ext->fonts[FSTY_OFF | FSTY_BOLD_ITALIC];
1442 output_string (this, ls_c_str (off), ls_end (off));
1445 /* Turn on new font. */
1446 attr = (*bp & 0x0300);
1447 if (attr != (OUTP_F_R << 8))
1449 struct len_string *on;
1454 on = &ext->fonts[FSTY_ON | FSTY_ITALIC];
1457 on = &ext->fonts[FSTY_ON | FSTY_BOLD];
1459 case OUTP_F_BI << 8:
1460 on = &ext->fonts[FSTY_ON | FSTY_BOLD_ITALIC];
1467 output_string (this, ls_c_str (on), ls_end (on));
1476 return_carriage (this, n_chars);
1481 while (ep < end_p && (*ep & 0x0300) == (OUTP_F_R << 8))
1485 output_char (this, ep - bp, ' ');
1487 switch (*ep & 0x0300)
1495 case OUTP_F_BI << 8:
1503 output_char (this, 1, ch);
1504 n_chars += ep - bp + 1;
1511 return_carriage (this, n_chars);
1515 while (ep < end_p && (*ep & 0x0300) != (OUTP_F_BI << 8))
1519 output_char (this, ep - bp, ' ');
1520 output_char (this, 1, '_');
1526 output_string (this, ls_c_str (newline), ls_end (newline));
1532 ascii_close_page (struct outp_driver *this)
1536 struct ascii_driver_ext *x = this->ext;
1537 int nl_len, ff_len, total_len;
1541 assert (this->driver_open && this->page_open);
1544 line_buf = xmalloc (LINE_BUF_SIZE);
1547 nl_len = ls_length (&x->ops[OPS_NEWLINE]);
1550 total_len = x->top_margin * nl_len;
1551 if (s_len < total_len)
1554 s = xrealloc (s, s_len);
1556 for (cp = s, i = 0; i < x->top_margin; i++)
1558 memcpy (cp, ls_c_str (&x->ops[OPS_NEWLINE]), nl_len);
1561 output_string (this, s, &s[total_len]);
1567 total_len = nl_len + x->w;
1568 if (s_len < total_len + 1)
1570 s_len = total_len + 1;
1571 s = xrealloc (s, s_len);
1574 memset (s, ' ', x->w);
1579 snprintf (temp, 80, _("%s - Page %d"), curdate, x->page_number);
1580 memcpy (&s[x->w - strlen (temp)], temp, strlen (temp));
1583 if (outp_title && outp_subtitle)
1585 len = min ((int) strlen (outp_title), x->w);
1586 memcpy (s, outp_title, len);
1588 memcpy (&s[x->w], ls_c_str (&x->ops[OPS_NEWLINE]), nl_len);
1589 output_string (this, s, &s[total_len]);
1591 memset (s, ' ', x->w);
1592 len = strlen (version) + 3 + strlen (host_system);
1594 sprintf (&s[x->w - len], "%s - %s" , version, host_system);
1595 if (outp_subtitle || outp_title)
1597 char *string = outp_subtitle ? outp_subtitle : outp_title;
1598 len = min ((int) strlen (string), x->w);
1599 memcpy (s, string, len);
1601 memcpy (&s[x->w], ls_c_str (&x->ops[OPS_NEWLINE]), nl_len);
1602 output_string (this, s, &s[total_len]);
1603 output_string (this, &s[x->w], &s[total_len]);
1605 if (line_p != line_buf && !commit_line_buf (this))
1608 output_lines (this, 0, x->l);
1610 ff_len = ls_length (&x->ops[OPS_FORMFEED]);
1611 total_len = x->bottom_margin * nl_len + ff_len;
1612 if (s_len < total_len)
1613 s = xrealloc (s, total_len);
1614 for (cp = s, i = 0; i < x->bottom_margin; i++)
1616 memcpy (cp, ls_c_str (&x->ops[OPS_NEWLINE]), nl_len);
1619 memcpy (cp, ls_c_str (&x->ops[OPS_FORMFEED]), ff_len);
1621 output_string (this, s, &s[total_len]);
1623 if (line_p != line_buf && !commit_line_buf (this))
1630 this->page_open = 0;
1634 struct outp_class ascii_class =
1644 ascii_preopen_driver,
1646 ascii_postopen_driver,
1656 ascii_line_intersection,
1659 ascii_polyline_begin,
1660 ascii_polyline_point,
1663 ascii_text_set_font_by_name,
1664 ascii_text_set_font_by_position,
1665 ascii_text_set_font_by_family,
1666 ascii_text_get_font_name,
1667 ascii_text_get_font_family,
1668 ascii_text_set_size,
1669 ascii_text_get_size,