/* $NetBSD: pre-html.cpp,v 1.1.1.1 2003/06/30 17:52:15 wiz Exp $ */
// -*- C++ -*-
/* Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Written by Gaius Mulley (gaius@glam.ac.uk).
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. */
#define PREHTMLC
#include "lib.h"
#include
#include
#include
#include
#include
#include "errarg.h"
#include "error.h"
#include "stringclass.h"
#include "posix.h"
#include "defs.h"
#include "searchpath.h"
#include "paper.h"
#include "font.h"
#include
#include
#ifdef HAVE_UNISTD_H
#include
#endif
#ifdef _POSIX_VERSION
#include
#define PID_T pid_t
#else /* not _POSIX_VERSION */
#define PID_T int
#endif /* not _POSIX_VERSION */
#include
#include "nonposix.h"
extern "C" const char *Version_string;
#include "pre-html.h"
#include "pushback.h"
#include "html-strings.h"
#define DEFAULT_LINE_LENGTH 7 // inches wide
#define DEFAULT_IMAGE_RES 100 // number of pixels per inch resolution
#define IMAGE_BOARDER_PIXELS 0
#define INLINE_LEADER_CHAR '\\'
#define TRANSPARENT "-background white -transparent white"
#define MIN_ALPHA_BITS 0
#define MAX_ALPHA_BITS 4
#define PAGE_TEMPLATE_SHORT "pg"
#define PAGE_TEMPLATE_LONG "-page-"
#define PS_TEMPLATE_SHORT "ps"
#define PS_TEMPLATE_LONG "-ps-"
#define REGION_TEMPLATE_SHORT "rg"
#define REGION_TEMPLATE_LONG "-regions-"
#if 0
# define DEBUGGING
#endif
#if !defined(TRUE)
# define TRUE (1==1)
#endif
#if !defined(FALSE)
# define FALSE (1==0)
#endif
typedef enum {CENTERED, LEFT, RIGHT, INLINE} IMAGE_ALIGNMENT;
static int postscriptRes =-1; // postscript resolution, dots per inch
static int stdoutfd = 1; // output file descriptor - normally 1 but might move
// -1 means closed
static int copyofstdoutfd =-1; // a copy of stdout, so we can restore stdout when
// writing to post-html
static char *psFileName = NULL; // name of postscript file
static char *psPageName = NULL; // name of file containing postscript current page
static char *regionFileName = NULL; // name of file containing all image regions
static char *imagePageName = NULL; // name of bitmap image containing current page
static const char *image_device = "pnmraw";
static int image_res = DEFAULT_IMAGE_RES;
static int vertical_offset = 0;
static char *image_template = NULL; // image template filename
static char *macroset_template= NULL; // image template passed to troff by -D
static int troff_arg = 0; // troff arg index
static char *image_dir = NULL; // user specified image directory
static int textAlphaBits = MAX_ALPHA_BITS;
static int graphicAlphaBits = MAX_ALPHA_BITS;
static char *antiAlias = NULL; // antialias arguments we pass to gs.
static int show_progress = FALSE; // should we display page numbers as they are processed?
static int currentPageNo = -1; // current image page number
#if defined(DEBUGGING)
static int debug = FALSE;
static char *troffFileName = NULL; // output of pre-html output which is sent to troff -Tps
static char *htmlFileName = NULL; // output of pre-html output which is sent to troff -Thtml
#endif
static char *linebuf = NULL; // for scanning devps/DESC
static int linebufsize = 0;
const char *const FONT_ENV_VAR = "GROFF_FONT_PATH";
static search_path font_path(FONT_ENV_VAR, FONTPATH, 0, 0);
/*
* Images are generated via postscript, gs and the pnm utilities.
*/
#define IMAGE_DEVICE "-Tps"
/*
* prototypes
*/
static int do_file(const char *filename);
/*
* sys_fatal - writes a fatal error message.
* Taken from src/roff/groff/pipeline.c.
*/
void sys_fatal (const char *s)
{
fatal("%1: %2", s, strerror(errno));
}
/*
* get_line - copies a line (w/o newline) from a file to the global line buffer
*/
int get_line (FILE *f)
{
if (f == 0)
return 0;
if (linebuf == 0) {
linebuf = new char[128];
linebufsize = 128;
}
int i = 0;
// skip leading whitespace
for (;;) {
int c = getc(f);
if (c == EOF)
return 0;
if (c != ' ' && c != '\t') {
ungetc(c, f);
break;
}
}
for (;;) {
int c = getc(f);
if (c == EOF)
break;
if (i + 1 >= linebufsize) {
char *old_linebuf = linebuf;
linebuf = new char[linebufsize * 2];
memcpy(linebuf, old_linebuf, linebufsize);
a_delete old_linebuf;
linebufsize *= 2;
}
linebuf[i++] = c;
if (c == '\n') {
i--;
break;
}
}
linebuf[i] = '\0';
return 1;
}
/*
* get_resolution - returns the postscript resolution from devps/DESC
*/
static unsigned int get_resolution (void)
{
char *pathp;
FILE *f;
unsigned int res;
f = font_path.open_file("devps/DESC", &pathp);
a_delete pathp;
if (f == 0)
fatal("can't open devps/DESC");
while (get_line(f)) {
int n = sscanf(linebuf, "res %u", &res);
if (n >= 1) {
fclose(f);
return res;
}
}
fatal("can't find `res' keyword in devps/DESC");
return 0;
}
/*
* html_system - a wrapper for system()
*/
void html_system(const char *s, int redirect_stdout)
{
// Redirect standard error to the null device. This is more
// portable than using "2> /dev/null", since it doesn't require a
// Unixy shell.
int save_stderr = dup(2);
int save_stdout = dup(1);
int fdnull = open(NULL_DEV, O_WRONLY|O_BINARY, 0666);
if (save_stderr > 2 && fdnull > 2)
dup2(fdnull, 2);
if (redirect_stdout && save_stdout > 1 && fdnull > 1)
dup2(fdnull, 1);
if (fdnull >= 0)
close(fdnull);
int status = system(s);
dup2(save_stderr, 2);
if (redirect_stdout)
dup2(save_stdout, 1);
if (status == -1)
fprintf(stderr, "Calling `%s' failed\n", s);
else if (status)
fprintf(stderr, "Calling `%s' returned status %d\n", s, status);
close(save_stderr);
close(save_stdout);
}
/*
* make_message - taken from man printf(3), creates a string via malloc
* and places the result of the va args into string.
* Finally the new string is returned.
*/
char *
make_message (const char *fmt, ...)
{
/* Guess we need no more than 100 bytes. */
int n, size = 100;
char *p;
char *np;
va_list ap;
if ((p = (char *)malloc (size)) == NULL)
return NULL;
while (1) {
/* Try to print in the allocated space. */
va_start(ap, fmt);
n = vsnprintf (p, size, fmt, ap);
va_end(ap);
/* If that worked, return the string. */
if (n > -1 && n < size) {
if (size > n+1) {
np = strsave(p);
free(p);
return np;
}
return p;
}
/* Else try again with more space. */
if (n > -1) /* glibc 2.1 */
size = n+1; /* precisely what is needed */
else /* glibc 2.0 */
size *= 2; /* twice the old size */
if ((np = (char *)realloc (p, size)) == NULL) {
free(p); /* realloc failed, free old, p. */
return NULL;
}
p = np; /* use realloc'ed, p */
}
}
/*
* the class and methods for retaining ascii text
*/
struct char_block {
enum { SIZE = 256 };
char buffer[SIZE];
int used;
char_block *next;
char_block();
};
/*
* char_block - constructor, sets the, used, and, next, fields to zero.
*/
char_block::char_block()
: used(0), next(0)
{
for (int i = 0; i < SIZE; i++)
buffer[i] = 0;
}
class char_buffer {
public:
char_buffer();
~char_buffer();
int read_file(FILE *fp);
int do_html(int argc, char *argv[]);
int do_image(int argc, char *argv[]);
void write_file_html(void);
void write_file_troff(void);
void write_upto_newline (char_block **t, int *i, int is_html);
int can_see(char_block **t, int *i, const char *string);
int skip_spaces(char_block **t, int *i);
void skip_until_newline(char_block **t, int *i);
private:
char_block *head;
char_block *tail;
};
/*
* char_buffer - constructor
*/
char_buffer::char_buffer()
: head(0), tail(0)
{
}
/*
* char_buffer - deconstructor, throws aways the whole buffer list.
*/
char_buffer::~char_buffer()
{
while (head != NULL) {
char_block *temp = head;
head = head->next;
delete temp;
}
}
/*
* read_file - read in a complete file, fp, placing the contents inside char_blocks.
*/
int char_buffer::read_file (FILE *fp)
{
int n;
while (! feof(fp)) {
if (tail == NULL) {
tail = new char_block;
head = tail;
} else {
if (tail->used == char_block::SIZE) {
tail->next = new char_block;
tail = tail->next;
}
}
// at this point we have a tail which is ready for the next SIZE bytes of the file
n = fread(tail->buffer, sizeof(char), char_block::SIZE-tail->used, fp);
if (n <= 0) {
// error
return( 0 );
} else {
tail->used += n*sizeof(char);
}
}
return( 1 );
}
/*
* writeNbytes - writes n bytes to stdout.
*/
static void writeNbytes (const char *s, int l)
{
int n=0;
int r;
while (n0) && (image_dir[strlen(image_dir)-1] != '/')) {
image_dir = make_message("%s/", image_dir);
if (image_dir == NULL)
sys_fatal("make_message");
}
if (image_template == NULL)
macroset_template = make_message("%sgrohtml-%d", image_dir, (int)getpid());
else
macroset_template = make_message("%s%s", image_dir, image_template);
if (macroset_template == NULL)
sys_fatal("make_message");
image_template = (char *)malloc(strlen("-%d")+strlen(macroset_template)+1);
if (image_template == NULL)
sys_fatal("malloc");
strcpy(image_template, macroset_template);
strcat(image_template, "-%d");
}
/*
* setupAntiAlias - sets up the antialias string, used when we call gs.
*/
static void setupAntiAlias (void)
{
if (textAlphaBits == 0 && graphicAlphaBits == 0)
antiAlias = make_message(" ");
else if (textAlphaBits == 0)
antiAlias = make_message("-dGraphicsAlphaBits=%d ", graphicAlphaBits);
else if (graphicAlphaBits == 0)
antiAlias = make_message("-dTextAlphaBits=%d ", textAlphaBits);
else
antiAlias = make_message("-dTextAlphaBits=%d -dGraphicsAlphaBits=%d ",
textAlphaBits, graphicAlphaBits);
}
/*
* checkImageDir - checks to see whether the image directory is available.
*/
static void checkImageDir (void)
{
if ((image_dir != NULL) && (strcmp(image_dir, "") != 0))
if (! ((mkdir(image_dir, 0777) == 0) || (errno == EEXIST))) {
error("cannot create directory `%1'", image_dir);
exit(1);
}
}
/*
* write_end_image - ends the image. It writes out the image extents if we are using -Tps.
*/
static void write_end_image (int is_html)
{
/*
* if we are producing html then these
* emit image name and enable output
* else
* we are producing images
* in which case these generate image
* boundaries
*/
writeString("\\O[4]\\O[2]");
if (is_html)
writeString("\\O[1]");
else
writeString("\\O[0]");
}
/*
* write_start_image - writes the troff which will:
*
* (i) disable html output for the following image
* (ii) reset the max/min x/y registers during postscript
* rendering.
*/
static void write_start_image (IMAGE_ALIGNMENT pos, int is_html)
{
writeString("\\O[5");
switch (pos) {
case INLINE:
writeString("i");
break;
case LEFT:
writeString("l");
break;
case RIGHT:
writeString("r");
break;
case CENTERED:
default:
writeString("c");
break;
}
writeString(image_template); writeString(".png]");
if (is_html)
writeString("\\O[0]\\O[3]");
else
// reset min/max registers
writeString("\\O[1]\\O[3]");
}
/*
* write_upto_newline - writes the contents of the buffer until a newline is seen.
* It checks for HTML_IMAGE_INLINE_BEGIN and HTML_IMAGE_INLINE_END
* and if they are present it processes them.
*/
void char_buffer::write_upto_newline (char_block **t, int *i, int is_html)
{
int j=*i;
if (*t) {
while ((j < (*t)->used) && ((*t)->buffer[j] != '\n') &&
((*t)->buffer[j] != INLINE_LEADER_CHAR)) {
j++;
}
if ((j < (*t)->used) && ((*t)->buffer[j] == '\n')) {
j++;
}
writeNbytes((*t)->buffer+(*i), j-(*i));
if ((*t)->buffer[j] == INLINE_LEADER_CHAR) {
if (can_see(t, &j, HTML_IMAGE_INLINE_BEGIN))
write_start_image(INLINE, is_html);
else if (can_see(t, &j, HTML_IMAGE_INLINE_END))
write_end_image(is_html);
else {
if (j < (*t)->used) {
*i = j;
j++;
writeNbytes((*t)->buffer+(*i), j-(*i));
}
}
}
if (j == (*t)->used) {
*i = 0;
if ((*t)->buffer[j-1] == '\n') {
*t = (*t)->next;
} else {
*t = (*t)->next;
write_upto_newline(t, i, is_html);
}
} else {
// newline was seen
*i = j;
}
}
}
/*
* can_see - returns TRUE if we can see string in t->buffer[i] onwards
*/
int char_buffer::can_see (char_block **t, int *i, const char *string)
{
int j = 0;
int l = strlen(string);
int k = *i;
char_block *s = *t;
while (s) {
while ((kused) && (jbuffer[k] == string[j])) {
j++;
k++;
}
if (j == l) {
*i = k;
*t = s;
return( TRUE );
} else if ((kused) && (s->buffer[k] != string[j])) {
return( FALSE );
}
s = s->next;
k = 0;
}
return( FALSE );
}
/*
* skip_spaces - returns TRUE if we have not run out of data.
* It also consumes spaces.
*/
int char_buffer::skip_spaces(char_block **t, int *i)
{
char_block *s = *t;
int k = *i;
while (s) {
while ((kused) && (isspace(s->buffer[k]))) {
k++;
}
if (k == s->used) {
k = 0;
s = s->next;
} else {
*i = k;
return( TRUE );
}
}
return( FALSE );
}
/*
* skip_until_newline - skips all characters until a newline is seen.
* The newline is not consumed.
*/
void char_buffer::skip_until_newline (char_block **t, int *i)
{
int j=*i;
if (*t) {
while ((j < (*t)->used) && ((*t)->buffer[j] != '\n')) {
j++;
}
if (j == (*t)->used) {
*i = 0;
*t = (*t)->next;
skip_until_newline(t, i);
} else {
// newline was seen
*i = j;
}
}
}
/*
* write_file_troff - writes the buffer to stdout (troff).
*/
void char_buffer::write_file_troff (void)
{
char_block *t=head;
int i=0;
if (t != NULL) {
do {
write_upto_newline(&t, &i, FALSE);
} while (t != NULL);
}
if (close(stdoutfd) < 0)
sys_fatal("close");
// now we grab fd=1 so that the next pipe cannot use fd=1
if (stdoutfd == 1) {
if (dup(2) != stdoutfd) {
sys_fatal("dup failed to use fd=1");
}
}
}
/*
* the image class remembers the position of all images in the postscript file
* and assigns names for each image.
*/
struct imageItem {
imageItem *next;
int X1;
int Y1;
int X2;
int Y2;
char *imageName;
int resolution;
int maxx;
int pageNo;
imageItem (int x1, int y1, int x2, int y2, int page, int res, int max_width, char *name);
~imageItem ();
};
/*
* imageItem - constructor
*/
imageItem::imageItem (int x1, int y1, int x2, int y2, int page, int res, int max_width, char *name)
{
X1 = x1;
Y1 = y1;
X2 = x2;
Y2 = y2;
pageNo = page;
resolution = res;
maxx = max_width;
imageName = name;
next = NULL;
}
/*
* imageItem - deconstructor
*/
imageItem::~imageItem ()
{
if (imageName)
free(imageName);
}
/*
* imageList - class containing a list of imageItems.
*/
class imageList {
private:
imageItem *head;
imageItem *tail;
int count;
public:
imageList();
~imageList();
void add(int x1, int y1, int x2, int y2, int page, int res, int maxx, char *name);
void createImages (void);
int createPage (int pageno);
void createImage (imageItem *i);
int getMaxX (int pageno);
};
/*
* imageList - constructor.
*/
imageList::imageList ()
: head(0), tail(0), count(0)
{
}
/*
* imageList - deconstructor.
*/
imageList::~imageList ()
{
while (head != NULL) {
imageItem *i = head;
head = head->next;
delete i;
}
}
/*
* createPage - creates one image of, page pageno, from the postscript file.
*/
int imageList::createPage (int pageno)
{
char *s;
if (currentPageNo == pageno)
return 0;
if (currentPageNo >= 1) {
/*
* we need to unlink the files which change each time a new page is processed.
* The final unlink is done by xtmpfile when pre-grohtml exits.
*/
unlink(imagePageName);
unlink(psPageName);
}
if (show_progress) {
fprintf(stderr, "[%d] ", pageno);
fflush(stderr);
}
#if defined(DEBUGGING)
if (debug)
fprintf(stderr, "creating page %d\n", pageno);
#endif
s = make_message("psselect -q -p%d %s %s\n",
pageno, psFileName, psPageName);
if (s == NULL)
sys_fatal("make_message");
#if defined(DEBUGGING)
if (debug) {
fwrite(s, sizeof(char), strlen(s), stderr);
fflush(stderr);
}
#endif
html_system(s, 1);
s = make_message("echo showpage | "
"gs%s -q -dBATCH -dSAFER "
"-dDEVICEHEIGHTPOINTS=792 "
"-dDEVICEWIDTHPOINTS=%d -dFIXEDMEDIA=true "
"-sDEVICE=%s -r%d %s "
"-sOutputFile=%s %s -\n",
EXE_EXT,
(getMaxX(pageno) * image_res) / postscriptRes,
image_device,
image_res,
antiAlias,
imagePageName,
psPageName);
if (s == NULL)
sys_fatal("make_message");
#if defined(DEBUGGING)
if (debug) {
fwrite(s, sizeof(char), strlen(s), stderr);
fflush(stderr);
}
#endif
html_system(s, 1);
free(s);
currentPageNo = pageno;
return 0;
}
/*
* min - returns the minimum of two numbers.
*/
int min (int x, int y)
{
if (x < y) {
return( x );
} else {
return( y );
}
}
/*
* max - returns the maximum of two numbers.
*/
int max (int x, int y)
{
if (x > y) {
return( x );
} else {
return( y );
}
}
/*
* getMaxX - returns the largest right hand position for any image on, pageno
*/
int imageList::getMaxX (int pageno)
{
imageItem *h = head;
int x = postscriptRes * DEFAULT_LINE_LENGTH;
while (h != NULL) {
if (h->pageNo == pageno)
x = max(h->X2, x);
h = h->next;
}
return x;
}
/*
* createImage - generates a minimal png file from the set of page images.
*/
void imageList::createImage (imageItem *i)
{
if (i->X1 != -1) {
char *s;
int x1 = max(min(i->X1, i->X2)*image_res/postscriptRes-1*IMAGE_BOARDER_PIXELS, 0);
int y1 = max((image_res*vertical_offset/72)+min(i->Y1, i->Y2)*image_res/postscriptRes-IMAGE_BOARDER_PIXELS, 0);
int x2 = max(i->X1, i->X2)*image_res/postscriptRes+1*IMAGE_BOARDER_PIXELS;
int y2 = (image_res*vertical_offset/72)+(max(i->Y1, i->Y2)*image_res/postscriptRes)+1+IMAGE_BOARDER_PIXELS;
if (createPage(i->pageNo) == 0) {
s = make_message("pnmcut%s %d %d %d %d < %s | pnmcrop -quiet | pnmtopng%s %s > %s \n",
EXE_EXT,
x1, y1, x2-x1+1, y2-y1+1,
imagePageName,
EXE_EXT,
TRANSPARENT,
i->imageName);
if (s == NULL)
sys_fatal("make_message");
#if defined(DEBUGGING)
if (debug) {
fprintf(stderr, s);
fflush(stderr);
}
#endif
html_system(s, 0);
free(s);
} else {
fprintf(stderr, "failed to generate image of page %d\n", i->pageNo);
fflush(stderr);
}
#if defined(DEBUGGING)
} else {
if (debug) {
fprintf(stderr, "ignoring image as x1 coord is -1\n");
fflush(stderr);
}
#endif
}
}
/*
* add - an image description to the imageList.
*/
void imageList::add (int x1, int y1, int x2, int y2, int page, int res, int maxx, char *name)
{
imageItem *i = new imageItem(x1, y1, x2, y2, page, res, maxx, name);
if (head == NULL) {
head = i;
tail = i;
} else {
tail->next = i;
tail = i;
}
}
/*
* createImages - foreach image descriptor on the imageList, create the actual image.
*/
void imageList::createImages (void)
{
imageItem *h = head;
while (h != NULL) {
createImage(h);
h = h->next;
}
}
static imageList listOfImages; // list of images defined by the region file.
/*
* write_file_html - writes the buffer to stdout (troff).
* It writes out the file replacing template image names with
* actual image names.
*/
void char_buffer::write_file_html (void)
{
char_block *t=head;
int i=0;
if (t != NULL) {
do {
write_upto_newline(&t, &i, TRUE);
} while (t != NULL);
}
if (close(stdoutfd) < 0)
sys_fatal("close");
// now we grab fd=1 so that the next pipe cannot use fd=1
if (stdoutfd == 1) {
if (dup(2) != stdoutfd) {
sys_fatal("dup failed to use fd=1");
}
}
}
/*
* generateImages - parses the region file and generates images
* from the postscript file. The region file
* contains the x1,y1 x2,y2 extents of each
* image.
*/
static void generateImages (char *regionFileName)
{
pushBackBuffer *f=new pushBackBuffer(regionFileName);
while (f->putPB(f->getPB()) != eof) {
if (f->isString("grohtml-info:page")) {
int page = f->readInt();
int x1 = f->readInt();
int y1 = f->readInt();
int x2 = f->readInt();
int y2 = f->readInt();
int maxx = f->readInt();
char *name = f->readString();
int res = postscriptRes;
listOfImages.add(x1, y1, x2, y2, page, res, maxx, name);
while ((f->putPB(f->getPB()) != '\n') &&
(f->putPB(f->getPB()) != eof)) {
(void)f->getPB();
}
if (f->putPB(f->getPB()) == '\n') {
(void)f->getPB();
}
} else {
/*
* write any error messages out to the user
*/
fputc(f->getPB(), stderr);
}
}
listOfImages.createImages();
if (show_progress) {
fprintf(stderr, "done\n");
fflush(stderr);
}
delete f;
}
/*
* replaceFd - replace a file descriptor, was, with, willbe.
*/
static void replaceFd (int was, int willbe)
{
int dupres;
if (was != willbe) {
if (close(was)<0) {
sys_fatal("close");
}
dupres = dup(willbe);
if (dupres != was) {
sys_fatal("dup");
fprintf(stderr, "trying to replace fd=%d with %d dup used %d\n", was, willbe, dupres);
if (willbe == 1) {
fprintf(stderr, "likely that stdout should be opened before %d\n", was);
}
exit(1);
}
if (close(willbe) < 0) {
sys_fatal("close");
}
}
}
/*
* waitForChild - waits for child, pid, to exit.
*/
static void waitForChild (PID_T pid)
{
PID_T waitpd;
int status;
waitpd = WAIT(&status, pid, _WAIT_CHILD);
if (waitpd != pid)
sys_fatal("wait");
}
/*
* alterDeviceTo - if toImage is set then the arg list is altered to include
* IMAGE_DEVICE and we invoke groff rather than troff.
* else
* set -Thtml and groff
*/
static void alterDeviceTo (int argc, char *argv[], int toImage)
{
int i=0;
if (toImage) {
while (i < argc) {
if (strcmp(argv[i], "-Thtml") == 0) {
argv[i] = IMAGE_DEVICE;
}
i++;
}
argv[troff_arg] = "groff"; /* rather than troff */
} else {
while (i < argc) {
if (strcmp(argv[i], IMAGE_DEVICE) == 0) {
argv[i] = "-Thtml";
}
i++;
}
argv[troff_arg] = "groff"; /* use groff -Z */
}
}
/*
* addZ - appends -Z onto the command list for groff.
*/
char **addZ (int argc, char *argv[])
{
char **new_argv = (char **)malloc((argc+2)*sizeof(char *));
int i=0;
if (new_argv == NULL)
sys_fatal("malloc");
if (argc > 0) {
new_argv[i] = argv[i];
i++;
}
new_argv[i] = "-Z";
while (i)\n");
fprintf(stream, " place all png files into image_directory\n");
}
/*
* scanArguments - scans for all arguments including -P-i, -P-o, -P-D and -P-I. It returns
* the argument index of the first non option.
*/
int scanArguments (int argc, char **argv)
{
const char *command_prefix = getenv("GROFF_COMMAND_PREFIX");
if (!command_prefix)
command_prefix = PROG_PREFIX;
char *troff_name = new char[strlen(command_prefix) + strlen("troff") + 1];
strcpy(troff_name, command_prefix);
strcat(troff_name, "troff");
int c, i;
static const struct option long_options[] = {
{ "help", no_argument, 0, CHAR_MAX + 1 },
{ "version", no_argument, 0, 'v' },
{ NULL, 0, 0, 0 }
};
while ((c = getopt_long(argc, argv, "+a:g:o:i:I:D:F:vbdhlrnp", long_options, NULL))
!= EOF)
switch(c) {
case 'v':
printf("GNU pre-grohtml (groff) version %s\n", Version_string);
exit(0);
case 'a':
textAlphaBits = min(max(MIN_ALPHA_BITS, atoi(optarg)), MAX_ALPHA_BITS);
if (textAlphaBits == 3) {
error("cannot use 3 bits of antialiasing information");
exit(1);
}
break;
case 'g':
graphicAlphaBits = min(max(MIN_ALPHA_BITS, atoi(optarg)), MAX_ALPHA_BITS);
if (graphicAlphaBits == 3) {
error("cannot use 3 bits of antialiasing information");
exit(1);
}
break;
case 'b':
// handled by post-grohtml (set background color to white)
break;
case 'D':
image_dir = optarg;
break;
case 'I':
image_template = optarg;
break;
case 'i':
image_res = atoi(optarg);
break;
case 'F':
font_path.command_line_dir(optarg);
break;
case 'o':
vertical_offset = atoi(optarg);
break;
case 'p':
show_progress = TRUE;
break;
case 'd':
#if defined(DEBUGGING)
debug = TRUE;
#endif
break;
case 'h':
// handled by post-grohtml
break;
case CHAR_MAX + 1: // --help
usage(stdout);
exit(0);
break;
case '?':
usage(stderr);
exit(1);
break;
default:
break;
}
i = optind;
while (i < argc) {
if (strcmp(argv[i], troff_name) == 0)
troff_arg = i;
else if (argv[i][0] != '-')
return i;
i++;
}
a_delete troff_name;
return argc;
}
/*
* makeTempFiles - name the temporary files
*/
static int makeTempFiles (void)
{
#if defined(DEBUGGING)
psFileName = "/tmp/prehtml-ps";
regionFileName = "/tmp/prehtml-region";
imagePageName = "/tmp/prehtml-page";
psPageName = "/tmp/prehtml-psn";
troffFileName = "/tmp/prehtml-troff";
htmlFileName = "/tmp/prehtml-html";
#else
FILE *f;
/* psPageName contains a single page of postscript */
f = xtmpfile(&psPageName,
PS_TEMPLATE_LONG, PS_TEMPLATE_SHORT,
TRUE);
if (f == NULL) {
sys_fatal("xtmpfile");
return -1;
}
fclose(f);
/* imagePageName contains a bitmap image of the single postscript page */
f = xtmpfile(&imagePageName,
PAGE_TEMPLATE_LONG, PAGE_TEMPLATE_SHORT,
TRUE);
if (f == NULL) {
sys_fatal("xtmpfile");
return -1;
}
fclose(f);
/* psFileName contains a postscript file of the complete document */
f = xtmpfile(&psFileName,
PS_TEMPLATE_LONG, PS_TEMPLATE_SHORT,
TRUE);
if (f == NULL) {
sys_fatal("xtmpfile");
return -1;
}
fclose(f);
/* regionFileName contains a list of the images and their boxed coordinates */
f = xtmpfile(®ionFileName,
REGION_TEMPLATE_LONG, REGION_TEMPLATE_SHORT,
TRUE);
if (f == NULL) {
sys_fatal("xtmpfile");
return -1;
}
fclose(f);
#endif
return 0;
}
int main(int argc, char **argv)
{
program_name = argv[0];
int i;
int found=0;
int ok=1;
postscriptRes = get_resolution();
i = scanArguments(argc, argv);
setupAntiAlias();
checkImageDir();
makeFileName();
while (i < argc) {
if (argv[i][0] != '-') {
/* found source file */
ok = do_file(argv[i]);
if (! ok) {
return( 0 );
}
found = 1;
}
i++;
}
copyofstdoutfd=dup(stdoutfd);
if (! found) {
do_file("-");
}
if (makeTempFiles())
return 1;
ok = inputFile.do_image(argc, argv);
if (ok == 0) {
generateImages(regionFileName);
ok = inputFile.do_html(argc, argv);
}
return ok;
}
static int do_file(const char *filename)
{
FILE *fp;
current_filename = filename;
if (strcmp(filename, "-") == 0) {
fp = stdin;
} else {
fp = fopen(filename, "r");
if (fp == 0) {
error("can't open `%1': %2", filename, strerror(errno));
return 0;
}
}
if (inputFile.read_file(fp)) {
}
if (fp != stdin)
fclose(fp);
current_filename = NULL;
return 1;
}