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-rw-r--r--contrib/groff/grops/ps.cc1541
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diff --git a/contrib/groff/grops/ps.cc b/contrib/groff/grops/ps.cc
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--- a/contrib/groff/grops/ps.cc
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@@ -1,1541 +0,0 @@
-// -*- C++ -*-
-/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
-
-This file is part of groff.
-
-groff is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
-
-groff is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License along
-with groff; see the file COPYING. If not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "driver.h"
-#include "stringclass.h"
-#include "cset.h"
-#include "nonposix.h"
-
-#include "ps.h"
-#include <time.h>
-
-static int landscape_flag = 0;
-static int manual_feed_flag = 0;
-static int ncopies = 1;
-static int linewidth = -1;
-// Non-zero means generate PostScript code that guesses the paper
-// length using the imageable area.
-static int guess_flag = 0;
-
-// Non-zero if -b was specified on the command line.
-static int bflag = 0;
-unsigned broken_flags = 0;
-
-#define DEFAULT_LINEWIDTH 40 /* in ems/1000 */
-#define MAX_LINE_LENGTH 72
-#define FILL_MAX 1000
-
-const char *const dict_name = "grops";
-const char *const defs_dict_name = "DEFS";
-const int DEFS_DICT_SPARE = 50;
-
-double degrees(double r)
-{
- return r*180.0/PI;
-}
-
-double radians(double d)
-{
- return d*PI/180.0;
-}
-
-inline double transform_fill(int fill)
-{
- return 1 - fill/double(FILL_MAX);
-}
-
-// This is used for testing whether a character should be output in the
-// PostScript file using \nnn, so we really want the character to be
-// less than 0200.
-
-inline int is_ascii(char c)
-{
- return (unsigned char)c < 0200;
-}
-
-ps_output::ps_output(FILE *f, int n)
-: fp(f), col(0), max_line_length(n), need_space(0), fixed_point(0)
-{
-}
-
-ps_output &ps_output::set_file(FILE *f)
-{
- fp = f;
- col = 0;
- return *this;
-}
-
-ps_output &ps_output::copy_file(FILE *infp)
-{
- int c;
- while ((c = getc(infp)) != EOF)
- putc(c, fp);
- return *this;
-}
-
-ps_output &ps_output::end_line()
-{
- if (col != 0) {
- putc('\n', fp);
- col = 0;
- need_space = 0;
- }
- return *this;
-}
-
-ps_output &ps_output::special(const char *s)
-{
- if (s == 0 || *s == '\0')
- return *this;
- if (col != 0) {
- putc('\n', fp);
- col = 0;
- }
- fputs(s, fp);
- if (strchr(s, '\0')[-1] != '\n')
- putc('\n', fp);
- need_space = 0;
- return *this;
-}
-
-ps_output &ps_output::simple_comment(const char *s)
-{
- if (col != 0)
- putc('\n', fp);
- putc('%', fp);
- putc('%', fp);
- fputs(s, fp);
- putc('\n', fp);
- col = 0;
- need_space = 0;
- return *this;
-}
-
-ps_output &ps_output::begin_comment(const char *s)
-{
- if (col != 0)
- putc('\n', fp);
- putc('%', fp);
- putc('%', fp);
- fputs(s, fp);
- col = 2 + strlen(s);
- return *this;
-}
-
-ps_output &ps_output::end_comment()
-{
- if (col != 0) {
- putc('\n', fp);
- col = 0;
- }
- need_space = 0;
- return *this;
-}
-
-ps_output &ps_output::comment_arg(const char *s)
-{
- int len = strlen(s);
- if (col + len + 1 > max_line_length) {
- putc('\n', fp);
- fputs("%%+", fp);
- col = 3;
- }
- putc(' ', fp);
- fputs(s, fp);
- col += len + 1;
- return *this;
-}
-
-ps_output &ps_output::set_fixed_point(int n)
-{
- assert(n >= 0 && n <= 10);
- fixed_point = n;
- return *this;
-}
-
-ps_output &ps_output::put_delimiter(char c)
-{
- if (col + 1 > max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- putc(c, fp);
- col++;
- need_space = 0;
- return *this;
-}
-
-ps_output &ps_output::put_string(const char *s, int n)
-{
- int len = 0;
- int i;
- for (i = 0; i < n; i++) {
- char c = s[i];
- if (is_ascii(c) && csprint(c)) {
- if (c == '(' || c == ')' || c == '\\')
- len += 2;
- else
- len += 1;
- }
- else
- len += 4;
- }
- if (len > n*2) {
- if (col + n*2 + 2 > max_line_length && n*2 + 2 <= max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- if (col + 1 > max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- putc('<', fp);
- col++;
- for (i = 0; i < n; i++) {
- if (col + 2 > max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- fprintf(fp, "%02x", s[i] & 0377);
- col += 2;
- }
- putc('>', fp);
- col++;
- }
- else {
- if (col + len + 2 > max_line_length && len + 2 <= max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- if (col + 2 > max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- putc('(', fp);
- col++;
- for (i = 0; i < n; i++) {
- char c = s[i];
- if (is_ascii(c) && csprint(c)) {
- if (c == '(' || c == ')' || c == '\\')
- len = 2;
- else
- len = 1;
- }
- else
- len = 4;
- if (col + len + 1 > max_line_length) {
- putc('\\', fp);
- putc('\n', fp);
- col = 0;
- }
- switch (len) {
- case 1:
- putc(c, fp);
- break;
- case 2:
- putc('\\', fp);
- putc(c, fp);
- break;
- case 4:
- fprintf(fp, "\\%03o", c & 0377);
- break;
- default:
- assert(0);
- }
- col += len;
- }
- putc(')', fp);
- col++;
- }
- need_space = 0;
- return *this;
-}
-
-ps_output &ps_output::put_number(int n)
-{
- char buf[1 + INT_DIGITS + 1];
- sprintf(buf, "%d", n);
- int len = strlen(buf);
- if (col > 0 && col + len + need_space > max_line_length) {
- putc('\n', fp);
- col = 0;
- need_space = 0;
- }
- if (need_space) {
- putc(' ', fp);
- col++;
- }
- fputs(buf, fp);
- col += len;
- need_space = 1;
- return *this;
-}
-
-ps_output &ps_output::put_fix_number(int i)
-{
- const char *p = if_to_a(i, fixed_point);
- int len = strlen(p);
- if (col > 0 && col + len + need_space > max_line_length) {
- putc('\n', fp);
- col = 0;
- need_space = 0;
- }
- if (need_space) {
- putc(' ', fp);
- col++;
- }
- fputs(p, fp);
- col += len;
- need_space = 1;
- return *this;
-}
-
-ps_output &ps_output::put_float(double d)
-{
- char buf[128];
- sprintf(buf, "%.4f", d);
- int len = strlen(buf);
- if (col > 0 && col + len + need_space > max_line_length) {
- putc('\n', fp);
- col = 0;
- need_space = 0;
- }
- if (need_space) {
- putc(' ', fp);
- col++;
- }
- fputs(buf, fp);
- col += len;
- need_space = 1;
- return *this;
-}
-
-ps_output &ps_output::put_symbol(const char *s)
-{
- int len = strlen(s);
- if (col > 0 && col + len + need_space > max_line_length) {
- putc('\n', fp);
- col = 0;
- need_space = 0;
- }
- if (need_space) {
- putc(' ', fp);
- col++;
- }
- fputs(s, fp);
- col += len;
- need_space = 1;
- return *this;
-}
-
-ps_output &ps_output::put_literal_symbol(const char *s)
-{
- int len = strlen(s);
- if (col > 0 && col + len + 1 > max_line_length) {
- putc('\n', fp);
- col = 0;
- }
- putc('/', fp);
- fputs(s, fp);
- col += len + 1;
- need_space = 1;
- return *this;
-}
-
-class ps_font : public font {
- ps_font(const char *);
-public:
- int encoding_index;
- char *encoding;
- char *reencoded_name;
- ~ps_font();
- void handle_unknown_font_command(const char *command, const char *arg,
- const char *filename, int lineno);
- static ps_font *load_ps_font(const char *);
-};
-
-ps_font *ps_font::load_ps_font(const char *s)
-{
- ps_font *f = new ps_font(s);
- if (!f->load()) {
- delete f;
- return 0;
- }
- return f;
-}
-
-ps_font::ps_font(const char *nm)
-: font(nm), encoding_index(-1), encoding(0), reencoded_name(0)
-{
-}
-
-ps_font::~ps_font()
-{
- a_delete encoding;
- a_delete reencoded_name;
-}
-
-void ps_font::handle_unknown_font_command(const char *command, const char *arg,
- const char *filename, int lineno)
-{
- if (strcmp(command, "encoding") == 0) {
- if (arg == 0)
- error_with_file_and_line(filename, lineno,
- "`encoding' command requires an argument");
- else
- encoding = strsave(arg);
- }
-}
-
-static void handle_unknown_desc_command(const char *command, const char *arg,
- const char *filename, int lineno)
-{
- if (strcmp(command, "broken") == 0) {
- if (arg == 0)
- error_with_file_and_line(filename, lineno,
- "`broken' command requires an argument");
- else if (!bflag)
- broken_flags = atoi(arg);
- }
-}
-
-struct style {
- font *f;
- int point_size;
- int height;
- int slant;
- style();
- style(font *, int, int, int);
- int operator==(const style &) const;
- int operator!=(const style &) const;
-};
-
-style::style() : f(0)
-{
-}
-
-style::style(font *p, int sz, int h, int sl)
-: f(p), point_size(sz), height(h), slant(sl)
-{
-}
-
-int style::operator==(const style &s) const
-{
- return (f == s.f && point_size == s.point_size
- && height == s.height && slant == s.slant);
-}
-
-int style::operator!=(const style &s) const
-{
- return !(*this == s);
-}
-
-class ps_printer : public printer {
- FILE *tempfp;
- ps_output out;
- int res;
- int space_char_index;
- int pages_output;
- int paper_length;
- int equalise_spaces;
- enum { SBUF_SIZE = 256 };
- char sbuf[SBUF_SIZE];
- int sbuf_len;
- int sbuf_start_hpos;
- int sbuf_vpos;
- int sbuf_end_hpos;
- int sbuf_space_width;
- int sbuf_space_count;
- int sbuf_space_diff_count;
- int sbuf_space_code;
- int sbuf_kern;
- style sbuf_style;
- style output_style;
- int output_hpos;
- int output_vpos;
- int output_draw_point_size;
- int line_thickness;
- int output_line_thickness;
- int fill;
- unsigned char output_space_code;
- enum { MAX_DEFINED_STYLES = 50 };
- style defined_styles[MAX_DEFINED_STYLES];
- int ndefined_styles;
- int next_encoding_index;
- string defs;
- int ndefs;
- resource_manager rm;
- int invis_count;
-
- void flush_sbuf();
- void set_style(const style &);
- void set_space_code(unsigned char c);
- int set_encoding_index(ps_font *);
- void do_exec(char *, const environment *);
- void do_import(char *, const environment *);
- void do_def(char *, const environment *);
- void do_mdef(char *, const environment *);
- void do_file(char *, const environment *);
- void do_invis(char *, const environment *);
- void do_endinvis(char *, const environment *);
- void set_line_thickness(const environment *);
- void fill_path();
- void encode_fonts();
- void define_encoding(const char *, int);
- void reencode_font(ps_font *);
-public:
- ps_printer();
- ~ps_printer();
- void set_char(int i, font *f, const environment *env, int w, const char *name);
- void draw(int code, int *p, int np, const environment *env);
- void begin_page(int);
- void end_page(int);
- void special(char *arg, const environment *env);
- font *make_font(const char *);
- void end_of_line();
-};
-
-ps_printer::ps_printer()
-: out(0, MAX_LINE_LENGTH),
- pages_output(0),
- sbuf_len(0),
- output_hpos(-1),
- output_vpos(-1),
- line_thickness(-1),
- fill(FILL_MAX + 1),
- ndefined_styles(0),
- next_encoding_index(0),
- ndefs(0),
- invis_count(0)
-{
- tempfp = xtmpfile();
- out.set_file(tempfp);
- if (linewidth < 0)
- linewidth = DEFAULT_LINEWIDTH;
- if (font::hor != 1)
- fatal("horizontal resolution must be 1");
- if (font::vert != 1)
- fatal("vertical resolution must be 1");
- if (font::res % (font::sizescale*72) != 0)
- fatal("res must be a multiple of 72*sizescale");
- int r = font::res;
- int point = 0;
- while (r % 10 == 0) {
- r /= 10;
- point++;
- }
- res = r;
- out.set_fixed_point(point);
- space_char_index = font::name_to_index("space");
- paper_length = font::paperlength;
- if (paper_length == 0)
- paper_length = 11*font::res;
- equalise_spaces = font::res >= 72000;
-}
-
-int ps_printer::set_encoding_index(ps_font *f)
-{
- if (f->encoding_index >= 0)
- return f->encoding_index;
- for (font_pointer_list *p = font_list; p; p = p->next)
- if (p->p != f) {
- char *encoding = ((ps_font *)p->p)->encoding;
- int encoding_index = ((ps_font *)p->p)->encoding_index;
- if (encoding != 0 && encoding_index >= 0
- && strcmp(f->encoding, encoding) == 0) {
- return f->encoding_index = encoding_index;
- }
- }
- return f->encoding_index = next_encoding_index++;
-}
-
-void ps_printer::set_char(int i, font *f, const environment *env, int w, const char *name)
-{
- if (i == space_char_index || invis_count > 0)
- return;
- unsigned char code = f->get_code(i);
- style sty(f, env->size, env->height, env->slant);
- if (sty.slant != 0) {
- if (sty.slant > 80 || sty.slant < -80) {
- error("silly slant `%1' degrees", sty.slant);
- sty.slant = 0;
- }
- }
- if (sbuf_len > 0) {
- if (sbuf_len < SBUF_SIZE
- && sty == sbuf_style
- && sbuf_vpos == env->vpos) {
- if (sbuf_end_hpos == env->hpos) {
- sbuf[sbuf_len++] = code;
- sbuf_end_hpos += w + sbuf_kern;
- return;
- }
- if (sbuf_len == 1 && sbuf_kern == 0) {
- sbuf_kern = env->hpos - sbuf_end_hpos;
- sbuf_end_hpos = env->hpos + sbuf_kern + w;
- sbuf[sbuf_len++] = code;
- return;
- }
- /* If sbuf_end_hpos - sbuf_kern == env->hpos, we are better off
- starting a new string. */
- if (sbuf_len < SBUF_SIZE - 1 && env->hpos >= sbuf_end_hpos
- && (sbuf_kern == 0 || sbuf_end_hpos - sbuf_kern != env->hpos)) {
- if (sbuf_space_code < 0) {
- if (f->contains(space_char_index)) {
- sbuf_space_code = f->get_code(space_char_index);
- sbuf_space_width = env->hpos - sbuf_end_hpos;
- sbuf_end_hpos = env->hpos + w + sbuf_kern;
- sbuf[sbuf_len++] = sbuf_space_code;
- sbuf[sbuf_len++] = code;
- sbuf_space_count++;
- return;
- }
- }
- else {
- int diff = env->hpos - sbuf_end_hpos - sbuf_space_width;
- if (diff == 0 || (equalise_spaces && (diff == 1 || diff == -1))) {
- sbuf_end_hpos = env->hpos + w + sbuf_kern;
- sbuf[sbuf_len++] = sbuf_space_code;
- sbuf[sbuf_len++] = code;
- sbuf_space_count++;
- if (diff == 1)
- sbuf_space_diff_count++;
- else if (diff == -1)
- sbuf_space_diff_count--;
- return;
- }
- }
- }
- }
- flush_sbuf();
- }
- sbuf_len = 1;
- sbuf[0] = code;
- sbuf_end_hpos = env->hpos + w;
- sbuf_start_hpos = env->hpos;
- sbuf_vpos = env->vpos;
- sbuf_style = sty;
- sbuf_space_code = -1;
- sbuf_space_width = 0;
- sbuf_space_count = sbuf_space_diff_count = 0;
- sbuf_kern = 0;
-}
-
-static char *make_encoding_name(int encoding_index)
-{
- static char buf[3 + INT_DIGITS + 1];
- sprintf(buf, "ENC%d", encoding_index);
- return buf;
-}
-
-const char *const WS = " \t\n\r";
-
-void ps_printer::define_encoding(const char *encoding, int encoding_index)
-{
- char *vec[256];
- int i;
- for (i = 0; i < 256; i++)
- vec[i] = 0;
- char *path;
- FILE *fp = font::open_file(encoding, &path);
- if (fp == 0)
- fatal("can't open encoding file `%1'", encoding);
- int lineno = 1;
- char buf[256];
- while (fgets(buf, 512, fp) != 0) {
- char *p = buf;
- while (csspace(*p))
- p++;
- if (*p != '#' && *p != '\0' && (p = strtok(buf, WS)) != 0) {
- char *q = strtok(0, WS);
- int n;
- if (q == 0 || sscanf(q, "%d", &n) != 1 || n < 0 || n >= 256)
- fatal_with_file_and_line(path, lineno, "bad second field");
- vec[n] = new char[strlen(p) + 1];
- strcpy(vec[n], p);
- }
- lineno++;
- }
- a_delete path;
- out.put_literal_symbol(make_encoding_name(encoding_index));
- out.put_delimiter('[');
- for (i = 0; i < 256; i++) {
- if (vec[i] == 0)
- out.put_literal_symbol(".notdef");
- else {
- out.put_literal_symbol(vec[i]);
- a_delete vec[i];
- }
- }
- out.put_delimiter(']').put_symbol("def");
-}
-
-void ps_printer::reencode_font(ps_font *f)
-{
- out.put_literal_symbol(f->reencoded_name)
- .put_symbol(make_encoding_name(f->encoding_index))
- .put_literal_symbol(f->get_internal_name())
- .put_symbol("RE");
-}
-
-void ps_printer::encode_fonts()
-{
- if (next_encoding_index == 0)
- return;
- char *done_encoding = new char[next_encoding_index];
- for (int i = 0; i < next_encoding_index; i++)
- done_encoding[i] = 0;
- for (font_pointer_list *f = font_list; f; f = f->next) {
- int encoding_index = ((ps_font *)f->p)->encoding_index;
- if (encoding_index >= 0) {
- assert(encoding_index < next_encoding_index);
- if (!done_encoding[encoding_index]) {
- done_encoding[encoding_index] = 1;
- define_encoding(((ps_font *)f->p)->encoding, encoding_index);
- }
- reencode_font((ps_font *)f->p);
- }
- }
- a_delete done_encoding;
-}
-
-void ps_printer::set_style(const style &sty)
-{
- char buf[1 + INT_DIGITS + 1];
- for (int i = 0; i < ndefined_styles; i++)
- if (sty == defined_styles[i]) {
- sprintf(buf, "F%d", i);
- out.put_symbol(buf);
- return;
- }
- if (ndefined_styles >= MAX_DEFINED_STYLES)
- ndefined_styles = 0;
- sprintf(buf, "F%d", ndefined_styles);
- out.put_literal_symbol(buf);
- const char *psname = sty.f->get_internal_name();
- if (psname == 0)
- fatal("no internalname specified for font `%1'", sty.f->get_name());
- char *encoding = ((ps_font *)sty.f)->encoding;
- if (encoding != 0) {
- char *s = ((ps_font *)sty.f)->reencoded_name;
- if (s == 0) {
- int ei = set_encoding_index((ps_font *)sty.f);
- char *tem = new char[strlen(psname) + 1 + INT_DIGITS + 1];
- sprintf(tem, "%s@%d", psname, ei);
- psname = tem;
- ((ps_font *)sty.f)->reencoded_name = tem;
- }
- else
- psname = s;
- }
- out.put_fix_number((font::res/(72*font::sizescale))*sty.point_size);
- if (sty.height != 0 || sty.slant != 0) {
- int h = sty.height == 0 ? sty.point_size : sty.height;
- h *= font::res/(72*font::sizescale);
- int c = int(h*tan(radians(sty.slant)) + .5);
- out.put_fix_number(c).put_fix_number(h).put_literal_symbol(psname)
- .put_symbol("MF");
- }
- else {
- out.put_literal_symbol(psname).put_symbol("SF");
- }
- defined_styles[ndefined_styles++] = sty;
-}
-
-void ps_printer::set_space_code(unsigned char c)
-{
- out.put_literal_symbol("SC").put_number(c).put_symbol("def");
-}
-
-void ps_printer::end_of_line()
-{
- flush_sbuf();
- // this ensures that we do an absolute motion to the beginning of a line
- output_vpos = output_hpos = -1;
-}
-
-void ps_printer::flush_sbuf()
-{
- enum {
- NONE,
- RELATIVE_H,
- RELATIVE_V,
- RELATIVE_HV,
- ABSOLUTE
- } motion = NONE;
- int space_flag = 0;
- if (sbuf_len == 0)
- return;
- if (output_style != sbuf_style) {
- set_style(sbuf_style);
- output_style = sbuf_style;
- }
- int extra_space = 0;
- if (output_hpos < 0 || output_vpos < 0)
- motion = ABSOLUTE;
- else {
- if (output_hpos != sbuf_start_hpos)
- motion = RELATIVE_H;
- if (output_vpos != sbuf_vpos) {
- if (motion != NONE)
- motion = RELATIVE_HV;
- else
- motion = RELATIVE_V;
- }
- }
- if (sbuf_space_code >= 0) {
- int w = sbuf_style.f->get_width(space_char_index, sbuf_style.point_size);
- if (w + sbuf_kern != sbuf_space_width) {
- if (sbuf_space_code != output_space_code) {
- set_space_code(sbuf_space_code);
- output_space_code = sbuf_space_code;
- }
- space_flag = 1;
- extra_space = sbuf_space_width - w - sbuf_kern;
- if (sbuf_space_diff_count > sbuf_space_count/2)
- extra_space++;
- else if (sbuf_space_diff_count < -(sbuf_space_count/2))
- extra_space--;
- }
- }
- if (space_flag)
- out.put_fix_number(extra_space);
- if (sbuf_kern != 0)
- out.put_fix_number(sbuf_kern);
- out.put_string(sbuf, sbuf_len);
- char command_array[] = {'A', 'B', 'C', 'D',
- 'E', 'F', 'G', 'H',
- 'I', 'J', 'K', 'L',
- 'M', 'N', 'O', 'P',
- 'Q', 'R', 'S', 'T'};
- char sym[2];
- sym[0] = command_array[motion*4 + space_flag + 2*(sbuf_kern != 0)];
- sym[1] = '\0';
- switch (motion) {
- case NONE:
- break;
- case ABSOLUTE:
- out.put_fix_number(sbuf_start_hpos)
- .put_fix_number(sbuf_vpos);
- break;
- case RELATIVE_H:
- out.put_fix_number(sbuf_start_hpos - output_hpos);
- break;
- case RELATIVE_V:
- out.put_fix_number(sbuf_vpos - output_vpos);
- break;
- case RELATIVE_HV:
- out.put_fix_number(sbuf_start_hpos - output_hpos)
- .put_fix_number(sbuf_vpos - output_vpos);
- break;
- default:
- assert(0);
- }
- out.put_symbol(sym);
- output_hpos = sbuf_end_hpos;
- output_vpos = sbuf_vpos;
- sbuf_len = 0;
-}
-
-
-void ps_printer::set_line_thickness(const environment *env)
-{
- if (line_thickness < 0) {
- if (output_draw_point_size != env->size) {
- // we ought to check for overflow here
- int lw = ((font::res/(72*font::sizescale))*linewidth*env->size)/1000;
- out.put_fix_number(lw).put_symbol("LW");
- output_draw_point_size = env->size;
- output_line_thickness = -1;
- }
- }
- else {
- if (output_line_thickness != line_thickness) {
- out.put_fix_number(line_thickness).put_symbol("LW");
- output_line_thickness = line_thickness;
- output_draw_point_size = -1;
- }
- }
-}
-
-void ps_printer::fill_path()
-{
- if (fill > FILL_MAX)
- out.put_symbol("BL");
- else
- out.put_float(transform_fill(fill)).put_symbol("FL");
-}
-
-void ps_printer::draw(int code, int *p, int np, const environment *env)
-{
- if (invis_count > 0)
- return;
- int fill_flag = 0;
- switch (code) {
- case 'C':
- fill_flag = 1;
- // fall through
- case 'c':
- // troff adds an extra argument to C
- if (np != 1 && !(code == 'C' && np == 2)) {
- error("1 argument required for circle");
- break;
- }
- out.put_fix_number(env->hpos + p[0]/2)
- .put_fix_number(env->vpos)
- .put_fix_number(p[0]/2)
- .put_symbol("DC");
- if (fill_flag) {
- fill_path();
- }
- else {
- set_line_thickness(env);
- out.put_symbol("ST");
- }
- break;
- case 'l':
- if (np != 2) {
- error("2 arguments required for line");
- break;
- }
- set_line_thickness(env);
- out.put_fix_number(p[0] + env->hpos)
- .put_fix_number(p[1] + env->vpos)
- .put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("DL");
- break;
- case 'E':
- fill_flag = 1;
- // fall through
- case 'e':
- if (np != 2) {
- error("2 arguments required for ellipse");
- break;
- }
- out.put_fix_number(p[0])
- .put_fix_number(p[1])
- .put_fix_number(env->hpos + p[0]/2)
- .put_fix_number(env->vpos)
- .put_symbol("DE");
- if (fill_flag) {
- fill_path();
- }
- else {
- set_line_thickness(env);
- out.put_symbol("ST");
- }
- break;
- case 'P':
- fill_flag = 1;
- // fall through
- case 'p':
- {
- if (np & 1) {
- error("even number of arguments required for polygon");
- break;
- }
- if (np == 0) {
- error("no arguments for polygon");
- break;
- }
- out.put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("MT");
- for (int i = 0; i < np; i += 2)
- out.put_fix_number(p[i])
- .put_fix_number(p[i+1])
- .put_symbol("RL");
- out.put_symbol("CL");
- if (fill_flag) {
- fill_path();
- }
- else {
- set_line_thickness(env);
- out.put_symbol("ST");
- }
- break;
- }
- case '~':
- {
- if (np & 1) {
- error("even number of arguments required for spline");
- break;
- }
- if (np == 0) {
- error("no arguments for spline");
- break;
- }
- out.put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("MT");
- out.put_fix_number(p[0]/2)
- .put_fix_number(p[1]/2)
- .put_symbol("RL");
- /* tnum/tden should be between 0 and 1; the closer it is to 1
- the tighter the curve will be to the guiding lines; 2/3
- is the standard value */
- const int tnum = 2;
- const int tden = 3;
- for (int i = 0; i < np - 2; i += 2) {
- out.put_fix_number((p[i]*tnum)/(2*tden))
- .put_fix_number((p[i + 1]*tnum)/(2*tden))
- .put_fix_number(p[i]/2 + (p[i + 2]*(tden - tnum))/(2*tden))
- .put_fix_number(p[i + 1]/2 + (p[i + 3]*(tden - tnum))/(2*tden))
- .put_fix_number((p[i] - p[i]/2) + p[i + 2]/2)
- .put_fix_number((p[i + 1] - p[i + 1]/2) + p[i + 3]/2)
- .put_symbol("RC");
- }
- out.put_fix_number(p[np - 2] - p[np - 2]/2)
- .put_fix_number(p[np - 1] - p[np - 1]/2)
- .put_symbol("RL");
- set_line_thickness(env);
- out.put_symbol("ST");
- }
- break;
- case 'a':
- {
- if (np != 4) {
- error("4 arguments required for arc");
- break;
- }
- set_line_thickness(env);
- double c[2];
- if (adjust_arc_center(p, c))
- out.put_fix_number(env->hpos + int(c[0]))
- .put_fix_number(env->vpos + int(c[1]))
- .put_fix_number(int(sqrt(c[0]*c[0] + c[1]*c[1])))
- .put_float(degrees(atan2(-c[1], -c[0])))
- .put_float(degrees(atan2(p[1] + p[3] - c[1], p[0] + p[2] - c[0])))
- .put_symbol("DA");
- else
- out.put_fix_number(p[0] + p[2] + env->hpos)
- .put_fix_number(p[1] + p[3] + env->vpos)
- .put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("DL");
- }
- break;
- case 't':
- {
- if (np == 0) {
- line_thickness = -1;
- }
- else {
- // troff gratuitously adds an extra 0
- if (np != 1 && np != 2) {
- error("0 or 1 argument required for thickness");
- break;
- }
- line_thickness = p[0];
- }
- break;
- }
- case 'f':
- {
- if (np != 1 && np != 2) {
- error("1 argument required for fill");
- break;
- }
- fill = p[0];
- if (fill < 0 || fill > FILL_MAX) {
- // This means fill with the current color.
- fill = FILL_MAX + 1;
- }
- break;
- }
- default:
- error("unrecognised drawing command `%1'", char(code));
- break;
- }
-
- output_hpos = output_vpos = -1;
-}
-
-
-void ps_printer::begin_page(int n)
-{
- out.begin_comment("Page:").comment_arg(i_to_a(n));
- out.comment_arg(i_to_a(++pages_output)).end_comment();
- output_style.f = 0;
- output_space_code = 32;
- output_draw_point_size = -1;
- output_line_thickness = -1;
- output_hpos = output_vpos = -1;
- ndefined_styles = 0;
- out.simple_comment("BeginPageSetup");
- out.put_symbol("BP");
- out.simple_comment("EndPageSetup");
-}
-
-void ps_printer::end_page(int)
-{
- flush_sbuf();
- out.put_symbol("EP");
- if (invis_count != 0) {
- error("missing `endinvis' command");
- invis_count = 0;
- }
-}
-
-font *ps_printer::make_font(const char *nm)
-{
- return ps_font::load_ps_font(nm);
-}
-
-ps_printer::~ps_printer()
-{
- out.simple_comment("Trailer");
- out.put_symbol("end");
- out.simple_comment("EOF");
- if (fseek(tempfp, 0L, 0) < 0)
- fatal("fseek on temporary file failed");
- fputs("%!PS-Adobe-", stdout);
- fputs((broken_flags & USE_PS_ADOBE_2_0) ? "2.0" : "3.0", stdout);
- putchar('\n');
- out.set_file(stdout);
- {
- extern const char *Version_string;
- out.begin_comment("Creator:")
- .comment_arg("groff")
- .comment_arg("version")
- .comment_arg(Version_string)
- .end_comment();
- }
- {
- fputs("%%CreationDate: ", out.get_file());
-#ifdef LONG_FOR_TIME_T
- long
-#else
- time_t
-#endif
- t = time(0);
- fputs(ctime(&t), out.get_file());
- }
- for (font_pointer_list *f = font_list; f; f = f->next) {
- ps_font *psf = (ps_font *)(f->p);
- rm.need_font(psf->get_internal_name());
- }
- rm.print_header_comments(out);
- out.begin_comment("Pages:").comment_arg(i_to_a(pages_output)).end_comment();
- out.begin_comment("PageOrder:").comment_arg("Ascend").end_comment();
-#if 0
- fprintf(out.get_file(), "%%%%DocumentMedia: () %g %g 0 () ()\n",
- font::paperwidth*72.0/font::res,
- paper_length*72.0/font::res);
-#endif
- out.begin_comment("Orientation:")
- .comment_arg(landscape_flag ? "Landscape" : "Portrait")
- .end_comment();
- if (ncopies != 1) {
- out.end_line();
- fprintf(out.get_file(), "%%%%Requirements: numcopies(%d)\n", ncopies);
- }
- out.simple_comment("EndComments");
- out.simple_comment("BeginProlog");
- rm.output_prolog(out);
- if (!(broken_flags & NO_SETUP_SECTION)) {
- out.simple_comment("EndProlog");
- out.simple_comment("BeginSetup");
- }
- rm.document_setup(out);
- out.put_symbol(dict_name).put_symbol("begin");
- if (ndefs > 0)
- ndefs += DEFS_DICT_SPARE;
- out.put_literal_symbol(defs_dict_name)
- .put_number(ndefs + 1)
- .put_symbol("dict")
- .put_symbol("def");
- out.put_symbol(defs_dict_name)
- .put_symbol("begin");
- out.put_literal_symbol("u")
- .put_delimiter('{')
- .put_fix_number(1)
- .put_symbol("mul")
- .put_delimiter('}')
- .put_symbol("bind")
- .put_symbol("def");
- defs += '\0';
- out.special(defs.contents());
- out.put_symbol("end");
- if (ncopies != 1)
- out.put_literal_symbol("#copies").put_number(ncopies).put_symbol("def");
- out.put_literal_symbol("RES").put_number(res).put_symbol("def");
- out.put_literal_symbol("PL");
- if (guess_flag)
- out.put_symbol("PLG");
- else
- out.put_fix_number(paper_length);
- out.put_symbol("def");
- out.put_literal_symbol("LS")
- .put_symbol(landscape_flag ? "true" : "false")
- .put_symbol("def");
- if (manual_feed_flag) {
- out.begin_comment("BeginFeature:")
- .comment_arg("*ManualFeed")
- .comment_arg("True")
- .end_comment()
- .put_symbol("MANUAL")
- .simple_comment("EndFeature");
- }
- encode_fonts();
- out.simple_comment((broken_flags & NO_SETUP_SECTION)
- ? "EndProlog"
- : "EndSetup");
- out.end_line();
- out.copy_file(tempfp);
- fclose(tempfp);
-}
-
-void ps_printer::special(char *arg, const environment *env)
-{
- typedef void (ps_printer::*SPECIAL_PROCP)(char *, const environment *);
- static struct {
- const char *name;
- SPECIAL_PROCP proc;
- } proc_table[] = {
- { "exec", &ps_printer::do_exec },
- { "def", &ps_printer::do_def },
- { "mdef", &ps_printer::do_mdef },
- { "import", &ps_printer::do_import },
- { "file", &ps_printer::do_file },
- { "invis", &ps_printer::do_invis },
- { "endinvis", &ps_printer::do_endinvis },
- };
- char *p;
- for (p = arg; *p == ' ' || *p == '\n'; p++)
- ;
- char *tag = p;
- for (; *p != '\0' && *p != ':' && *p != ' ' && *p != '\n'; p++)
- ;
- if (*p == '\0' || strncmp(tag, "ps", p - tag) != 0) {
- error("X command without `ps:' tag ignored");
- return;
- }
- p++;
- for (; *p == ' ' || *p == '\n'; p++)
- ;
- char *command = p;
- for (; *p != '\0' && *p != ' ' && *p != '\n'; p++)
- ;
- if (*command == '\0') {
- error("X command without `ps:' tag ignored");
- return;
- }
- for (int i = 0; i < sizeof(proc_table)/sizeof(proc_table[0]); i++)
- if (strncmp(command, proc_table[i].name, p - command) == 0) {
- (this->*(proc_table[i].proc))(p, env);
- return;
- }
- error("X command `%1' not recognised", command);
-}
-
-// A conforming PostScript document must not have lines longer
-// than 255 characters (excluding line termination characters).
-
-static int check_line_lengths(const char *p)
-{
- for (;;) {
- const char *end = strchr(p, '\n');
- if (end == 0)
- end = strchr(p, '\0');
- if (end - p > 255)
- return 0;
- if (*end == '\0')
- break;
- p = end + 1;
- }
- return 1;
-}
-
-void ps_printer::do_exec(char *arg, const environment *env)
-{
- flush_sbuf();
- while (csspace(*arg))
- arg++;
- if (*arg == '\0') {
- error("missing argument to X exec command");
- return;
- }
- if (!check_line_lengths(arg)) {
- error("lines in X exec command must not be more than 255 characters long");
- return;
- }
- out.put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("EBEGIN")
- .special(arg)
- .put_symbol("EEND");
- output_hpos = output_vpos = -1;
- output_style.f = 0;
- output_draw_point_size = -1;
- output_line_thickness = -1;
- ndefined_styles = 0;
- if (!ndefs)
- ndefs = 1;
-}
-
-void ps_printer::do_file(char *arg, const environment *env)
-{
- flush_sbuf();
- while (csspace(*arg))
- arg++;
- if (*arg == '\0') {
- error("missing argument to X file command");
- return;
- }
- const char *filename = arg;
- do {
- ++arg;
- } while (*arg != '\0' && *arg != ' ' && *arg != '\n');
- out.put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("EBEGIN");
- rm.import_file(filename, out);
- out.put_symbol("EEND");
- output_hpos = output_vpos = -1;
- output_style.f = 0;
- output_draw_point_size = -1;
- output_line_thickness = -1;
- ndefined_styles = 0;
- if (!ndefs)
- ndefs = 1;
-}
-
-void ps_printer::do_def(char *arg, const environment *)
-{
- flush_sbuf();
- while (csspace(*arg))
- arg++;
- if (!check_line_lengths(arg)) {
- error("lines in X def command must not be more than 255 characters long");
- return;
- }
- defs += arg;
- if (*arg != '\0' && strchr(arg, '\0')[-1] != '\n')
- defs += '\n';
- ndefs++;
-}
-
-// Like def, but the first argument says how many definitions it contains.
-
-void ps_printer::do_mdef(char *arg, const environment *)
-{
- flush_sbuf();
- char *p;
- int n = (int)strtol(arg, &p, 10);
- if (n == 0 && p == arg) {
- error("first argument to X mdef must be an integer");
- return;
- }
- if (n < 0) {
- error("out of range argument `%1' to X mdef command", int(n));
- return;
- }
- arg = p;
- while (csspace(*arg))
- arg++;
- if (!check_line_lengths(arg)) {
- error("lines in X mdef command must not be more than 255 characters long");
- return;
- }
- defs += arg;
- if (*arg != '\0' && strchr(arg, '\0')[-1] != '\n')
- defs += '\n';
- ndefs += n;
-}
-
-void ps_printer::do_import(char *arg, const environment *env)
-{
- flush_sbuf();
- while (*arg == ' ' || *arg == '\n')
- arg++;
- char *p;
- for (p = arg; *p != '\0' && *p != ' ' && *p != '\n'; p++)
- ;
- if (*p != '\0')
- *p++ = '\0';
- int parms[6];
- int nparms = 0;
- while (nparms < 6) {
- char *end;
- long n = strtol(p, &end, 10);
- if (n == 0 && end == p)
- break;
- parms[nparms++] = int(n);
- p = end;
- }
- if (csalpha(*p) && (p[1] == '\0' || p[1] == ' ' || p[1] == '\n')) {
- error("scaling indicators not allowed in arguments for X import command");
- return;
- }
- while (*p == ' ' || *p == '\n')
- p++;
- if (nparms < 5) {
- if (*p == '\0')
- error("too few arguments for X import command");
- else
- error("invalid argument `%1' for X import command", p);
- return;
- }
- if (*p != '\0') {
- error("superflous argument `%1' for X import command", p);
- return;
- }
- int llx = parms[0];
- int lly = parms[1];
- int urx = parms[2];
- int ury = parms[3];
- int desired_width = parms[4];
- int desired_height = parms[5];
- if (desired_width <= 0) {
- error("bad width argument `%1' for X import command: must be > 0",
- desired_width);
- return;
- }
- if (nparms == 6 && desired_height <= 0) {
- error("bad height argument `%1' for X import command: must be > 0",
- desired_height);
- return;
- }
- if (llx == urx) {
- error("llx and urx arguments for X import command must not be equal");
- return;
- }
- if (lly == ury) {
- error("lly and ury arguments for X import command must not be equal");
- return;
- }
- if (nparms == 5) {
- int old_wid = urx - llx;
- int old_ht = ury - lly;
- if (old_wid < 0)
- old_wid = -old_wid;
- if (old_ht < 0)
- old_ht = -old_ht;
- desired_height = int(desired_width*(double(old_ht)/double(old_wid)) + .5);
- }
- if (env->vpos - desired_height < 0)
- warning("top of imported graphic is above the top of the page");
- out.put_number(llx)
- .put_number(lly)
- .put_fix_number(desired_width)
- .put_number(urx - llx)
- .put_fix_number(-desired_height)
- .put_number(ury - lly)
- .put_fix_number(env->hpos)
- .put_fix_number(env->vpos)
- .put_symbol("PBEGIN");
- rm.import_file(arg, out);
- // do this here just in case application defines PEND
- out.put_symbol("end");
- out.put_symbol("PEND");
-}
-
-void ps_printer::do_invis(char *, const environment *)
-{
- invis_count++;
-}
-
-void ps_printer::do_endinvis(char *, const environment *)
-{
- if (invis_count == 0)
- error("unbalanced `endinvis' command");
- else
- --invis_count;
-}
-
-printer *make_printer()
-{
- return new ps_printer;
-}
-
-static void usage();
-
-int main(int argc, char **argv)
-{
- program_name = argv[0];
- static char stderr_buf[BUFSIZ];
- setbuf(stderr, stderr_buf);
- int c;
- while ((c = getopt(argc, argv, "F:glmc:w:vb:")) != EOF)
- switch(c) {
- case 'v':
- {
- extern const char *Version_string;
- fprintf(stderr, "grops version %s\n", Version_string);
- fflush(stderr);
- break;
- }
- case 'c':
- if (sscanf(optarg, "%d", &ncopies) != 1 || ncopies <= 0) {
- error("bad number of copies `%s'", optarg);
- ncopies = 1;
- }
- break;
- case 'g':
- guess_flag = 1;
- break;
- case 'l':
- landscape_flag = 1;
- break;
- case 'm':
- manual_feed_flag = 1;
- break;
- case 'F':
- font::command_line_font_dir(optarg);
- break;
- case 'w':
- if (sscanf(optarg, "%d", &linewidth) != 1 || linewidth < 0) {
- error("bad linewidth `%1'", optarg);
- linewidth = -1;
- }
- break;
- case 'b':
- // XXX check this
- broken_flags = atoi(optarg);
- bflag = 1;
- break;
- case '?':
- usage();
- break;
- default:
- assert(0);
- }
- font::set_unknown_desc_command_handler(handle_unknown_desc_command);
-#ifdef SET_BINARY
- SET_BINARY(fileno(stdout));
-#endif
- if (optind >= argc)
- do_file("-");
- else {
- for (int i = optind; i < argc; i++)
- do_file(argv[i]);
- }
- delete pr;
- return 0;
-}
-
-static void usage()
-{
- fprintf(stderr, "usage: %s [-glmv] [-b n] [-c n] [-w n] [-F dir] [files ...]\n",
- program_name);
- exit(1);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-15 04:06:16 +0000