aboutsummaryrefslogtreecommitdiff
path: root/contrib/groff/grops/ps.cc
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/groff/grops/ps.cc')
-rw-r--r--contrib/groff/grops/ps.cc1532
1 files changed, 1532 insertions, 0 deletions
diff --git a/contrib/groff/grops/ps.cc b/contrib/groff/grops/ps.cc
new file mode 100644
index 000000000000..49ed9d4a5157
--- /dev/null
+++ b/contrib/groff/grops/ps.cc
@@ -0,0 +1,1532 @@
+// -*- 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 "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), max_line_length(n), col(0), 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 = iftoa(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(0), reencoded_name(0), encoding_index(-1)
+{
+}
+
+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);
+ 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()
+: pages_output(0),
+ sbuf_len(0),
+ output_hpos(-1),
+ output_vpos(-1),
+ out(0, MAX_LINE_LENGTH),
+ ndefined_styles(0),
+ next_encoding_index(0),
+ line_thickness(-1),
+ fill(FILL_MAX + 1),
+ 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)
+{
+ 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 sym[2];
+ sym[0] = 'A' + 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(itoa(n));
+ out.comment_arg(itoa(++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(itoa(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);
+ 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 2025-04-02 19:04:04 +0000