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-rw-r--r--backend/ps/ps.c1963
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diff --git a/backend/ps/ps.c b/backend/ps/ps.c
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--- a/backend/ps/ps.c
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@@ -1,1963 +0,0 @@
-/*
- * ps.c -- Postscript scanning and copying routines.
- * Copyright (C) 1992, 1998 Timothy O. Theisen
- *
- * This program 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 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Author: Tim Theisen Systems Programmer
- * Internet: tim@cs.wisc.edu Department of Computer Sciences
- * UUCP: uwvax!tim University of Wisconsin-Madison
- * Phone: (608)262-0438 1210 West Dayton Street
- * FAX: (608)262-9777 Madison, WI 53706
- */
-
-/* 18/3/98 Jake Hamby patch */
-
-/*
- * 98/03/17: Jake Hamby (jehamby@lightside.com):
- * Added support for compressed/gzipped Postscript and PDF files.
- * Compressed files are gunzipped to a temporary file, and PDF files are
- * scanned by calling Ghostscript to generate a fake DSC file.
- * This is based on code from GV 3.5.8, which is available at:
- * http://wwwthep.physik.uni-mainz.de/~plass/gv/
- */
-
-/* GV by Johannes Plass
- * Department of Physics
- * Johannes Gutenberg University
- * Mainz, Germany
- *
- * <plass@thep.physik.uni-mainz.de>
- */
-
-/* end of patch */
-
-#include <config.h>
-#include <stdlib.h>
-#include <stdio.h>
-#ifndef SEEK_SET
-# define SEEK_SET 0
-#endif
-#ifndef BUFSIZ
-# define BUFSIZ 1024
-#endif
-#include <ctype.h>
-#include <X11/Xos.h> /* #includes the appropriate <string.h> */
-#include "gstypes.h"
-#include "gsdefaults.h"
-#include "ps.h"
-#include "gsio.h"
-
-#include <glib.h>
-
-/* length calculates string length at compile time */
-/* can only be used with character constants */
-#define length(a) (sizeof(a)-1)
-#define iscomment(a, b) (strncmp(a, b, length(b)) == 0)
-#define DSCcomment(a) (a[0] == '%' && a[1] == '%')
-
- /* list of standard paper sizes from Adobe's PPD. */
-
-/*--------------------------------------------------*/
-/* Declarations for ps_io_*() routines. */
-
-typedef struct FileDataStruct_ *FileData;
-
-typedef struct FileDataStruct_ {
- FILE *file; /* file */
- int file_desc; /* file descriptor corresponding to file */
- int filepos; /* file position corresponding to the start of the line */
- char *buf; /* buffer */
- int buf_size; /* size of buffer */
- int buf_end; /* last char in buffer given as offset to buf */
- int line_begin; /* start of the line given as offset to buf */
- int line_end; /* end of the line given as offset to buf */
- int line_len; /* length of line, i.e. (line_end-line_begin) */
- char line_termchar; /* char exchanged for a '\0' at end of line */
- int status; /* 0 = okay, 1 = failed */
-} FileDataStruct;
-
-static FileData ps_io_init (FILE *file);
-static void ps_io_exit (FileData data);
-static char *ps_io_fgetchars (FileData data, int offset);
-
-static char *skipped_line = "% ps_io_fgetchars: skipped line";
-static char *empty_string = "";
-
-static char *readline (FileData fd, char **lineP, long *positionP, unsigned int *line_lenP);
-static char *gettextline(char *line);
-static char *get_next_text(char *line, char **next_char);
-static int blank(char *line);
-
-static struct page *
-pages_new(struct page *pages, int current, int maxpages)
-{
- struct page *oldpages = pages;
- if(!oldpages)
- pages = g_new0(struct page, maxpages);
- else
- pages = g_renew(struct page, oldpages, maxpages);
- for(; current < maxpages; current++) {
- memset(&(pages[current]), 0x00, sizeof(struct page));
- pages[current].orientation = GTK_GS_ORIENTATION_NONE;
- }
- return pages;
-}
-
-/*
- * psscan -- scan the PostScript file for document structuring comments.
- *
- * This scanner is designed to retrieve the information necessary for
- * the ghostview previewer. It will scan files that conform to any
- * version (1.0, 2.0, 2.1, or 3.0) of the document structuring conventions.
- * It does not really care which version of comments the file contains.
- * (The comments are largely upward compatible.) It will scan a number
- * of non-conforming documents. (You could have part of the document
- * conform to V2.0 and the rest conform to V3.0. It would be similar
- * to the DC-2 1/2+, it would look funny but it can still fly.)
- *
- * This routine returns a pointer to the document structure.
- * The structure contains the information relevant to previewing.
- * These include EPSF flag (to tell if the file is a encapsulated figure),
- * Page Size (for the Page Size), Bounding Box (to minimize backing
- * pixmap size or determine window size for encapsulated PostScript),
- * Orientation of Paper (for default transformation matrix), and
- * Page Order. The Title, Creator, and CreationDate are also retrieved to
- * help identify the document.
- *
- * The following comments are examined:
- *
- * Header section:
- * Must start with %!PS-Adobe-. Version numbers ignored.
- * Also allowed to be just %!PS, many files seem to have that.
- *
- * %!PS-Adobe-* [EPSF-*]
- * %%BoundingBox: <int> <int> <int> <int>|(atend)
- * %%Creator: <textline>
- * %%CreationDate: <textline>
- * %%Orientation: Portrait|Landscape|(atend)
- * %%Pages: <uint> [<int>]|(atend)
- * %%PageOrder: Ascend|Descend|Special|(atend)
- * %%Title: <textline>
- * %%DocumentMedia: <text> <real> <real> <real> <text> <text>
- * %%DocumentPaperSizes: <text>
- * %%EndComments
- *
- * Note: Either the 3.0 or 2.0 syntax for %%Pages is accepted.
- * Also either the 2.0 %%DocumentPaperSizes or the 3.0
- * %%DocumentMedia comments are accepted as well.
- *
- * The header section ends either explicitly with %%EndComments or
- * implicitly with any line that does not begin with %X where X is
- * a not whitespace character.
- *
- * If the file is encapsulated PostScript the optional Preview section
- * is next:
- *
- * %%BeginPreview
- * %%EndPreview
- *
- * This section explicitly begins and ends with the above comments.
- *
- * Next the Defaults section for version 3 page defaults:
- *
- * %%BeginDefaults
- * %%PageBoundingBox: <int> <int> <int> <int>
- * %%PageOrientation: Portrait|Landscape
- * %%PageMedia: <text>
- * %%EndDefaults
- *
- * This section explicitly begins and ends with the above comments.
- *
- * The prolog section either explicitly starts with %%BeginProlog or
- * implicitly with any nonblank line.
- *
- * %%BeginProlog
- * %%EndProlog
- *
- * The Prolog should end with %%EndProlog, however the proglog implicitly
- * ends when %%BeginSetup, %%Page, %%Trailer or %%EOF are encountered.
- *
- * The Setup section is where the version 2 page defaults are found.
- * This section either explicitly begins with %%BeginSetup or implicitly
- * with any nonblank line after the Prolog.
- *
- * %%BeginSetup
- * %%PageBoundingBox: <int> <int> <int> <int>
- * %%PageOrientation: Portrait|Landscape
- * %%PaperSize: <text>
- * %%EndSetup
- *
- * The Setup should end with %%EndSetup, however the setup implicitly
- * ends when %%Page, %%Trailer or %%EOF are encountered.
- *
- * Next each page starts explicitly with %%Page and ends implicitly with
- * %%Page or %%Trailer or %%EOF. The following comments are recognized:
- *
- * %%Page: <text> <uint>
- * %%PageBoundingBox: <int> <int> <int> <int>|(atend)
- * %%PageOrientation: Portrait|Landscape
- * %%PageMedia: <text>
- * %%PaperSize: <text>
- *
- * The tralier section start explicitly with %%Trailer and end with %%EOF.
- * The following comment are examined with the proper (atend) notation
- * was used in the header:
- *
- * %%Trailer
- * %%BoundingBox: <int> <int> <int> <int>|(atend)
- * %%Orientation: Portrait|Landscape|(atend)
- * %%Pages: <uint> [<int>]|(atend)
- * %%PageOrder: Ascend|Descend|Special|(atend)
- * %%EOF
- *
- *
- * + A DC-3 received severe damage to one of its wings. The wing was a total
- * loss. There was no replacement readily available, so the mechanic
- * installed a wing from a DC-2.
- */
-
-#include <glib.h>
-
-struct document *
-psscan(FILE * file, int respect_eof, const gchar * fname)
-{
- struct document *doc;
- int bb_set = NONE;
- int pages_set = NONE;
- int page_order_set = NONE;
- int orientation_set = NONE;
- int page_bb_set = NONE;
- int page_size_set = NONE;
- int preread; /* flag which tells the readline isn't needed */
- int i;
- unsigned int maxpages = 0;
- unsigned int nextpage = 1; /* Next expected page */
- unsigned int thispage;
- int ignore = 0; /* whether to ignore page ordinals */
- char *label;
- char *line;
- char text[PSLINELENGTH]; /* Temporary storage for text */
- long position; /* Position of the current line */
- long beginsection; /* Position of the beginning of the section */
- unsigned int line_len; /* Length of the current line */
- unsigned int section_len; /* Place to accumulate the section length */
- char *next_char; /* 1st char after text returned by get_next_text() */
- char *cp;
- GtkGSPaperSize *dmp;
- GtkGSPaperSize *papersizes = gtk_gs_defaults_get_paper_sizes();
- FileData fd;
-
- if(!file)
- return NULL;
-
- rewind(file);
-
- fd = ps_io_init(file);
- if (!readline(fd, &line, &position, &line_len)) {
- fprintf(stderr, "Warning: empty file.\n");
- ps_io_exit(fd);
- return(NULL);
- }
-
- /* HP printer job language data follows. Some printer drivers add pjl
- * commands to switch a pjl printer to postscript mode. If no PS header
- * follows, this seems to be a real pjl file. */
- if(iscomment(line, "\033%-12345X@PJL")) {
- /* read until first DSC comment */
- while(readline(fd, &line, &position, &line_len)
- && (line[0] != '%')) ;
- if(line[0] != '%') {
- g_print("psscan error: input files seems to be a PJL file.\n");
- ps_io_exit(fd);
- return (NULL);
- }
- }
-
- /* Header comments */
-
- /* Header should start with "%!PS-Adobe-", but some programms omit
- * parts of this or add a ^D at the beginning. */
- if(iscomment(line, "%!PS") || iscomment(line, "\004%!PS")) {
- doc = g_new0(struct document, 1);
- doc->default_page_orientation = GTK_GS_ORIENTATION_NONE;
- doc->orientation = GTK_GS_ORIENTATION_NONE;
-
- /* ignore possible leading ^D */
- if(*line == '\004') {
- position++;
- line_len--;
- }
-
-/* Jake Hamby patch 18/3/98 */
-
- text[0] = '\0';
- sscanf(line, "%*s %256s", text);
- /*doc->epsf = iscomment(text, "EPSF-"); */
- doc->epsf = iscomment(text, "EPSF"); /* Hamby - This line changed */
- doc->beginheader = position;
- section_len = line_len;
- }
- else {
- /* There are postscript documents that do not have
- %PS at the beginning, usually unstructured. We should GS decide
- For instance, the tech reports at this university:
-
- http://svrc.it.uq.edu.au/Bibliography/svrc-tr.html?94-45
-
- add ugly PostScript before the actual document.
-
- GS and gv is
- able to display them correctly as unstructured PS.
-
- In a way, this makes sense, a program PostScript does not need
- the !PS at the beginning.
- */
- doc = g_new0(struct document, 1);
- doc->default_page_orientation = GTK_GS_ORIENTATION_NONE;
- doc->orientation = GTK_GS_ORIENTATION_NONE;
- ps_io_exit(fd);
- return (doc);
- }
-
- preread = 0;
- while(preread || readline(fd, &line, &position, &line_len)) {
- if(!preread)
- section_len += line_len;
- preread = 0;
- if(line[0] != '%' ||
- iscomment(line + 1, "%EndComments") ||
- line[1] == ' ' || line[1] == '\t' || line[1] == '\n' ||
- !isprint(line[1])) {
- break;
- }
- else if(line[1] != '%') {
- /* Do nothing */
- }
- else if(doc->title == NULL && iscomment(line + 2, "Title:")) {
- doc->title = gettextline(line + length("%%Title:"));
- }
- else if(doc->date == NULL && iscomment(line + 2, "CreationDate:")) {
- doc->date = gettextline(line + length("%%CreationDate:"));
- }
- else if(doc->creator == NULL && iscomment(line + 2, "Creator:")) {
- doc->creator = gettextline(line + length("%%Creator:"));
- }
- else if(bb_set == NONE && iscomment(line + 2, "BoundingBox:")) {
- sscanf(line + length("%%BoundingBox:"), "%256s", text);
- if(strcmp(text, "(atend)") == 0) {
- bb_set = ATEND;
- }
- else {
- if(sscanf(line + length("%%BoundingBox:"), "%d %d %d %d",
- &(doc->boundingbox[LLX]),
- &(doc->boundingbox[LLY]),
- &(doc->boundingbox[URX]), &(doc->boundingbox[URY])) == 4)
- bb_set = 1;
- else {
- float fllx, flly, furx, fury;
- if(sscanf(line + length("%%BoundingBox:"), "%f %f %f %f",
- &fllx, &flly, &furx, &fury) == 4) {
- bb_set = 1;
- doc->boundingbox[LLX] = fllx;
- doc->boundingbox[LLY] = flly;
- doc->boundingbox[URX] = furx;
- doc->boundingbox[URY] = fury;
- if(fllx < doc->boundingbox[LLX])
- doc->boundingbox[LLX]--;
- if(flly < doc->boundingbox[LLY])
- doc->boundingbox[LLY]--;
- if(furx > doc->boundingbox[URX])
- doc->boundingbox[URX]++;
- if(fury > doc->boundingbox[URY])
- doc->boundingbox[URY]++;
- }
- }
- }
- }
- else if(orientation_set == NONE && iscomment(line + 2, "Orientation:")) {
- sscanf(line + length("%%Orientation:"), "%256s", text);
- if(strcmp(text, "(atend)") == 0) {
- orientation_set = ATEND;
- }
- else if(strcmp(text, "Portrait") == 0) {
- doc->orientation = GTK_GS_ORIENTATION_PORTRAIT;
- orientation_set = 1;
- }
- else if(strcmp(text, "Landscape") == 0) {
- doc->orientation = GTK_GS_ORIENTATION_LANDSCAPE;
- orientation_set = 1;
- }
- else if(strcmp(text, "Seascape") == 0) {
- doc->orientation = GTK_GS_ORIENTATION_SEASCAPE;
- orientation_set = 1;
- }
- }
- else if(page_order_set == NONE && iscomment(line + 2, "PageOrder:")) {
- sscanf(line + length("%%PageOrder:"), "%256s", text);
- if(strcmp(text, "(atend)") == 0) {
- page_order_set = ATEND;
- }
- else if(strcmp(text, "Ascend") == 0) {
- doc->pageorder = ASCEND;
- page_order_set = 1;
- }
- else if(strcmp(text, "Descend") == 0) {
- doc->pageorder = DESCEND;
- page_order_set = 1;
- }
- else if(strcmp(text, "Special") == 0) {
- doc->pageorder = SPECIAL;
- page_order_set = 1;
- }
- }
- else if(pages_set == NONE && iscomment(line + 2, "Pages:")) {
- sscanf(line + length("%%Pages:"), "%256s", text);
- if(strcmp(text, "(atend)") == 0) {
- pages_set = ATEND;
- }
- else {
- switch (sscanf(line + length("%%Pages:"), "%d %d", &maxpages, &i)) {
- case 2:
- if(page_order_set == NONE) {
- if(i == -1) {
- doc->pageorder = DESCEND;
- page_order_set = 1;
- }
- else if(i == 0) {
- doc->pageorder = SPECIAL;
- page_order_set = 1;
- }
- else if(i == 1) {
- doc->pageorder = ASCEND;
- page_order_set = 1;
- }
- }
- case 1:
- if(maxpages > 0)
- doc->pages = pages_new(NULL, 0, maxpages);
- }
- }
- }
- else if(doc->numsizes == NONE && iscomment(line + 2, "DocumentMedia:")) {
- float w, h;
- doc->size = g_new0(GtkGSPaperSize, 1);
- doc->size[0].name =
- get_next_text(line + length("%%DocumentMedia:"), &next_char);
- if(doc->size[0].name != NULL) {
- if(sscanf(next_char, "%f %f", &w, &h) == 2) {
- doc->size[0].width = w + 0.5;
- doc->size[0].height = h + 0.5;
- }
- if(doc->size[0].width != 0 && doc->size[0].height != 0)
- doc->numsizes = 1;
- else
- g_free(doc->size[0].name);
- }
- preread = 1;
- while(readline(fd, &line, &position, &line_len) &&
- DSCcomment(line) && iscomment(line + 2, "+")) {
- section_len += line_len;
- doc->size = g_renew(GtkGSPaperSize, doc->size, doc->numsizes + 1);
- doc->size[doc->numsizes].name =
- get_next_text(line + length("%%+"), &next_char);
- if(doc->size[doc->numsizes].name != NULL) {
- if(sscanf(next_char, "%f %f", &w, &h) == 2) {
- doc->size[doc->numsizes].width = w + 0.5;
- doc->size[doc->numsizes].height = h + 0.5;
- }
- if(doc->size[doc->numsizes].width != 0 &&
- doc->size[doc->numsizes].height != 0)
- doc->numsizes++;
- else
- g_free(doc->size[doc->numsizes].name);
- }
- }
- section_len += line_len;
- if(doc->numsizes != 0)
- doc->default_page_size = doc->size;
- }
- else if(doc->numsizes == NONE && iscomment(line + 2, "DocumentPaperSizes:")) {
-
- doc->size = g_new0(GtkGSPaperSize, 1);
- doc->size[0].name =
- get_next_text(line + length("%%DocumentPaperSizes:"), &next_char);
- if(doc->size[0].name != NULL) {
- doc->size[0].width = 0;
- doc->size[0].height = 0;
- for(dmp = papersizes; dmp->name != NULL; dmp++) {
- /* Note: Paper size comment uses down cased paper size
- * name. Case insensitive compares are only used for
- * PaperSize comments.
- */
- if(strcasecmp(doc->size[0].name, dmp->name) == 0) {
- g_free(doc->size[0].name);
- doc->size[0].name = g_strdup(dmp->name);
- doc->size[0].width = dmp->width;
- doc->size[0].height = dmp->height;
- break;
- }
- }
- if(doc->size[0].width != 0 && doc->size[0].height != 0)
- doc->numsizes = 1;
- else
- g_free(doc->size[0].name);
- }
- while((cp = get_next_text(next_char, &next_char))) {
- doc->size = g_renew(GtkGSPaperSize, doc->size, doc->numsizes + 1);
- doc->size[doc->numsizes].name = cp;
- doc->size[doc->numsizes].width = 0;
- doc->size[doc->numsizes].height = 0;
- for(dmp = papersizes; dmp->name != NULL; dmp++) {
- /* Note: Paper size comment uses down cased paper size
- * name. Case insensitive compares are only used for
- * PaperSize comments.
- */
- if(strcasecmp(doc->size[doc->numsizes].name, dmp->name) == 0) {
- g_free(doc->size[doc->numsizes].name);
- doc->size[doc->numsizes].name = g_strdup(dmp->name);
- doc->size[doc->numsizes].name = dmp->name;
- doc->size[doc->numsizes].width = dmp->width;
- doc->size[doc->numsizes].height = dmp->height;
- break;
- }
- }
- if(doc->size[doc->numsizes].width != 0 &&
- doc->size[doc->numsizes].height != 0)
- doc->numsizes++;
- else
- g_free(doc->size[doc->numsizes].name);
- }
- preread = 1;
- while(readline(fd, &line, &position, &line_len) &&
- DSCcomment(line) && iscomment(line + 2, "+")) {
- section_len += line_len;
- next_char = line + length("%%+");
- while((cp = get_next_text(next_char, &next_char))) {
- doc->size = g_renew(GtkGSPaperSize, doc->size, doc->numsizes + 1);
- doc->size[doc->numsizes].name = cp;
- doc->size[doc->numsizes].width = 0;
- doc->size[doc->numsizes].height = 0;
- for(dmp = papersizes; dmp->name != NULL; dmp++) {
- /* Note: Paper size comment uses down cased paper size
- * name. Case insensitive compares are only used for
- * PaperSize comments.
- */
- if(strcasecmp(doc->size[doc->numsizes].name, dmp->name) == 0) {
- doc->size[doc->numsizes].width = dmp->width;
- doc->size[doc->numsizes].height = dmp->height;
- break;
- }
- }
- if(doc->size[doc->numsizes].width != 0 &&
- doc->size[doc->numsizes].height != 0)
- doc->numsizes++;
- else
- g_free(doc->size[doc->numsizes].name);
- }
- }
- section_len += line_len;
- if(doc->numsizes != 0)
- doc->default_page_size = doc->size;
- }
- }
-
- if(DSCcomment(line) && iscomment(line + 2, "EndComments")) {
- readline(fd, &line, &position, &line_len);
- section_len += line_len;
- }
- doc->endheader = position;
- doc->lenheader = section_len - line_len;
-
- /* Optional Preview comments for encapsulated PostScript files */
-
- beginsection = position;
- section_len = line_len;
- while(blank(line) && readline(fd, &line, &position, &line_len)) {
- section_len += line_len;
- }
-
- if(doc->epsf && DSCcomment(line) && iscomment(line + 2, "BeginPreview")) {
- doc->beginpreview = beginsection;
- beginsection = 0;
- while(readline(fd, &line, &position, &line_len) &&
- !(DSCcomment(line) && iscomment(line + 2, "EndPreview"))) {
- section_len += line_len;
- }
- section_len += line_len;
- readline(fd, &line, &position, &line_len);
- section_len += line_len;
- doc->endpreview = position;
- doc->lenpreview = section_len - line_len;
- }
-
- /* Page Defaults for Version 3.0 files */
-
- if(beginsection == 0) {
- beginsection = position;
- section_len = line_len;
- }
- while(blank(line) && readline(fd, &line, &position, &line_len)) {
- section_len += line_len;
- }
-
- if(DSCcomment(line) && iscomment(line + 2, "BeginDefaults")) {
- doc->begindefaults = beginsection;
- beginsection = 0;
- while(readline(fd, &line, &position, &line_len) &&
- !(DSCcomment(line) && iscomment(line + 2, "EndDefaults"))) {
- section_len += line_len;
- if(!DSCcomment(line)) {
- /* Do nothing */
- }
- else if(doc->default_page_orientation == GTK_GS_ORIENTATION_NONE &&
- iscomment(line + 2, "PageOrientation:")) {
- sscanf(line + length("%%PageOrientation:"), "%256s", text);
- if(strcmp(text, "Portrait") == 0) {
- doc->default_page_orientation = GTK_GS_ORIENTATION_PORTRAIT;
- }
- else if(strcmp(text, "Landscape") == 0) {
- doc->default_page_orientation = GTK_GS_ORIENTATION_LANDSCAPE;
- }
- else if(strcmp(text, "Seascape") == 0) {
- doc->default_page_orientation = GTK_GS_ORIENTATION_SEASCAPE;
- }
- }
- else if(page_size_set == NONE && iscomment(line + 2, "PageMedia:")) {
- cp = get_next_text(line + length("%%PageMedia:"), NULL);
- for(dmp = doc->size, i = 0; i < doc->numsizes; i++, dmp++) {
- if(strcmp(cp, dmp->name) == 0) {
- doc->default_page_size = dmp;
- page_size_set = 1;
- break;
- }
- }
- g_free(cp);
- }
- else if(page_bb_set == NONE && iscomment(line + 2, "PageBoundingBox:")) {
- if(sscanf(line + length("%%PageBoundingBox:"), "%d %d %d %d",
- &(doc->default_page_boundingbox[LLX]),
- &(doc->default_page_boundingbox[LLY]),
- &(doc->default_page_boundingbox[URX]),
- &(doc->default_page_boundingbox[URY])) == 4)
- page_bb_set = 1;
- else {
- float fllx, flly, furx, fury;
- if(sscanf
- (line + length("%%PageBoundingBox:"), "%f %f %f %f",
- &fllx, &flly, &furx, &fury) == 4) {
- page_bb_set = 1;
- doc->default_page_boundingbox[LLX] = fllx;
- doc->default_page_boundingbox[LLY] = flly;
- doc->default_page_boundingbox[URX] = furx;
- doc->default_page_boundingbox[URY] = fury;
- if(fllx < doc->default_page_boundingbox[LLX])
- doc->default_page_boundingbox[LLX]--;
- if(flly < doc->default_page_boundingbox[LLY])
- doc->default_page_boundingbox[LLY]--;
- if(furx > doc->default_page_boundingbox[URX])
- doc->default_page_boundingbox[URX]++;
- if(fury > doc->default_page_boundingbox[URY])
- doc->default_page_boundingbox[URY]++;
- }
- }
- }
- }
- section_len += line_len;
- readline(fd, &line, &position, &line_len);
- section_len += line_len;
- doc->enddefaults = position;
- doc->lendefaults = section_len - line_len;
- }
-
- /* Document Prolog */
-
- if(beginsection == 0) {
- beginsection = position;
- section_len = line_len;
- }
- while(blank(line) && readline(fd, &line, &position, &line_len)) {
- section_len += line_len;
- }
-
- if(!(DSCcomment(line) &&
- (iscomment(line + 2, "BeginSetup") ||
- iscomment(line + 2, "Page:") ||
- iscomment(line + 2, "Trailer") || iscomment(line + 2, "EOF")))) {
- doc->beginprolog = beginsection;
- beginsection = 0;
- preread = 1;
-
- while((preread ||
- readline(fd, &line, &position, &line_len)) &&
- !(DSCcomment(line) &&
- (iscomment(line + 2, "EndProlog") ||
- iscomment(line + 2, "BeginSetup") ||
- iscomment(line + 2, "Page:") ||
- iscomment(line + 2, "Trailer") || iscomment(line + 2, "EOF")))) {
- if(!preread)
- section_len += line_len;
- preread = 0;
- }
- section_len += line_len;
- if(DSCcomment(line) && iscomment(line + 2, "EndProlog")) {
- readline(fd, &line, &position, &line_len);
- section_len += line_len;
- }
- doc->endprolog = position;
- doc->lenprolog = section_len - line_len;
- }
-
- /* Document Setup, Page Defaults found here for Version 2 files */
-
- if(beginsection == 0) {
- beginsection = position;
- section_len = line_len;
- }
- while(blank(line) && readline(fd, &line, &position, &line_len)) {
- section_len += line_len;
- }
-
- if(!(DSCcomment(line) &&
- (iscomment(line + 2, "Page:") ||
- iscomment(line + 2, "Trailer") ||
- (respect_eof && iscomment(line + 2, "EOF"))))) {
- doc->beginsetup = beginsection;
- beginsection = 0;
- preread = 1;
- while((preread ||
- readline(fd, &line, &position, &line_len)) &&
- !(DSCcomment(line) &&
- (iscomment(line + 2, "EndSetup") ||
- iscomment(line + 2, "Page:") ||
- iscomment(line + 2, "Trailer") ||
- (respect_eof && iscomment(line + 2, "EOF"))))) {
- if(!preread)
- section_len += line_len;
- preread = 0;
- if(!DSCcomment(line)) {
- /* Do nothing */
- }
- else if(doc->default_page_orientation == GTK_GS_ORIENTATION_NONE &&
- iscomment(line + 2, "PageOrientation:")) {
- sscanf(line + length("%%PageOrientation:"), "%256s", text);
- if(strcmp(text, "Portrait") == 0) {
- doc->default_page_orientation = GTK_GS_ORIENTATION_PORTRAIT;
- }
- else if(strcmp(text, "Landscape") == 0) {
- doc->default_page_orientation = GTK_GS_ORIENTATION_LANDSCAPE;
- }
- else if(strcmp(text, "Seascape") == 0) {
- doc->default_page_orientation = GTK_GS_ORIENTATION_SEASCAPE;
- }
- }
- else if(page_size_set == NONE && iscomment(line + 2, "PaperSize:")) {
- cp = get_next_text(line + length("%%PaperSize:"), NULL);
- for(dmp = doc->size, i = 0; i < doc->numsizes; i++, dmp++) {
- /* Note: Paper size comment uses down cased paper size
- * name. Case insensitive compares are only used for
- * PaperSize comments.
- */
- if(strcasecmp(cp, dmp->name) == 0) {
- doc->default_page_size = dmp;
- page_size_set = 1;
- break;
- }
- }
- g_free(cp);
- }
- else if(page_bb_set == NONE && iscomment(line + 2, "PageBoundingBox:")) {
- if(sscanf(line + length("%%PageBoundingBox:"), "%d %d %d %d",
- &(doc->default_page_boundingbox[LLX]),
- &(doc->default_page_boundingbox[LLY]),
- &(doc->default_page_boundingbox[URX]),
- &(doc->default_page_boundingbox[URY])) == 4)
- page_bb_set = 1;
- else {
- float fllx, flly, furx, fury;
- if(sscanf
- (line + length("%%PageBoundingBox:"), "%f %f %f %f",
- &fllx, &flly, &furx, &fury) == 4) {
- page_bb_set = 1;
- doc->default_page_boundingbox[LLX] = fllx;
- doc->default_page_boundingbox[LLY] = flly;
- doc->default_page_boundingbox[URX] = furx;
- doc->default_page_boundingbox[URY] = fury;
- if(fllx < doc->default_page_boundingbox[LLX])
- doc->default_page_boundingbox[LLX]--;
- if(flly < doc->default_page_boundingbox[LLY])
- doc->default_page_boundingbox[LLY]--;
- if(furx > doc->default_page_boundingbox[URX])
- doc->default_page_boundingbox[URX]++;
- if(fury > doc->default_page_boundingbox[URY])
- doc->default_page_boundingbox[URY]++;
- }
- }
- }
- }
- section_len += line_len;
- if(DSCcomment(line) && iscomment(line + 2, "EndSetup")) {
- readline(fd, &line, &position, &line_len);
- section_len += line_len;
- }
- doc->endsetup = position;
- doc->lensetup = section_len - line_len;
- }
-
- /* HACK: Mozilla 1.8 Workaround.
-
- It seems that Mozilla 1.8 generates important postscript code
- after the '%%EndProlog' and before the first page comment '%%Page: x y'.
- See comment below also.
- */
-
- if(doc->beginprolog && !doc->beginsetup) {
- doc->lenprolog += section_len - line_len;
- doc->endprolog = position;
- }
-
- /* HACK: Windows NT Workaround
-
- Mark Pfeifer (pfeiferm%ppddev@comet.cmis.abbott.com) noticed
- about problems when viewing Windows NT 3.51 generated postscript
- files with gv. He found that the relevant postscript files
- show important postscript code after the '%%EndSetup' and before
- the first page comment '%%Page: x y'.
- */
- if(doc->beginsetup) {
- while(!(DSCcomment(line) &&
- (iscomment(line + 2, "EndSetup") ||
- (iscomment(line + 2, "Page:") ||
- iscomment(line + 2, "Trailer") ||
- (respect_eof && iscomment(line + 2, "EOF"))))) &&
- (readline(fd, &line, &position, &line_len))) {
- section_len += line_len;
- doc->lensetup = section_len - line_len;
- doc->endsetup = position;
- }
- }
-
- /* Individual Pages */
-
- if(beginsection == 0) {
- beginsection = position;
- section_len = line_len;
- }
- while(blank(line) && readline(fd, &line, &position, &line_len)) {
- section_len += line_len;
- }
-
-
-newpage:
- while(DSCcomment(line) && iscomment(line + 2, "Page:")) {
- if(maxpages == 0) {
- maxpages = 1;
- doc->pages = pages_new(NULL, 0, maxpages);
- }
- label = get_next_text(line + length("%%Page:"), &next_char);
- if(sscanf(next_char, "%d", &thispage) != 1)
- thispage = 0;
- if(nextpage == 1) {
- ignore = thispage != 1;
- }
- if(!ignore && thispage != nextpage) {
- g_free(label);
- doc->numpages--;
- goto continuepage;
- }
- nextpage++;
- if(doc->numpages == maxpages) {
- maxpages++;
- doc->pages = pages_new(doc->pages, maxpages - 1, maxpages);
- }
- page_bb_set = NONE;
- doc->pages[doc->numpages].label = label;
- if(beginsection) {
- doc->pages[doc->numpages].begin = beginsection;
- beginsection = 0;
- }
- else {
- doc->pages[doc->numpages].begin = position;
- section_len = line_len;
- }
- continuepage:
- while(readline(fd, &line, &position, &line_len) &&
- !(DSCcomment(line) &&
- (iscomment(line + 2, "Page:") ||
- iscomment(line + 2, "Trailer") ||
- (respect_eof && iscomment(line + 2, "EOF"))))) {
- section_len += line_len;
- if(!DSCcomment(line)) {
- /* Do nothing */
- }
- else if(doc->pages[doc->numpages].orientation == NONE &&
- iscomment(line + 2, "PageOrientation:")) {
- sscanf(line + length("%%PageOrientation:"), "%256s", text);
- if(strcmp(text, "Portrait") == 0) {
- doc->pages[doc->numpages].orientation = GTK_GS_ORIENTATION_PORTRAIT;
- }
- else if(strcmp(text, "Landscape") == 0) {
- doc->pages[doc->numpages].orientation = GTK_GS_ORIENTATION_LANDSCAPE;
- }
- else if(strcmp(text, "Seascape") == 0) {
- doc->pages[doc->numpages].orientation = GTK_GS_ORIENTATION_SEASCAPE;
- }
- }
- else if(doc->pages[doc->numpages].size == NULL &&
- iscomment(line + 2, "PageMedia:")) {
- cp = get_next_text(line + length("%%PageMedia:"), NULL);
- for(dmp = doc->size, i = 0; i < doc->numsizes; i++, dmp++) {
- if(strcmp(cp, dmp->name) == 0) {
- doc->pages[doc->numpages].size = dmp;
- break;
- }
- }
- g_free(cp);
- }
- else if(doc->pages[doc->numpages].size == NULL &&
- iscomment(line + 2, "PaperSize:")) {
- cp = get_next_text(line + length("%%PaperSize:"), NULL);
- for(dmp = doc->size, i = 0; i < doc->numsizes; i++, dmp++) {
- /* Note: Paper size comment uses down cased paper size
- * name. Case insensitive compares are only used for
- * PaperSize comments.
- */
- if(strcasecmp(cp, dmp->name) == 0) {
- doc->pages[doc->numpages].size = dmp;
- break;
- }
- }
- g_free(cp);
- }
- else if((page_bb_set == NONE || page_bb_set == ATEND) &&
- iscomment(line + 2, "PageBoundingBox:")) {
- sscanf(line + length("%%PageBoundingBox:"), "%256s", text);
- if(strcmp(text, "(atend)") == 0) {
- page_bb_set = ATEND;
- }
- else {
- if(sscanf
- (line + length("%%PageBoundingBox:"), "%d %d %d %d",
- &(doc->pages[doc->numpages].boundingbox[LLX]),
- &(doc->pages[doc->numpages].boundingbox[LLY]),
- &(doc->pages[doc->numpages].boundingbox[URX]),
- &(doc->pages[doc->numpages].boundingbox[URY])) == 4) {
- if(page_bb_set == NONE)
- page_bb_set = 1;
- }
- else {
- float fllx, flly, furx, fury;
- if(sscanf(line + length("%%PageBoundingBox:"),
- "%f %f %f %f", &fllx, &flly, &furx, &fury) == 4) {
- if(page_bb_set == NONE)
- page_bb_set = 1;
- doc->pages[doc->numpages].boundingbox[LLX] = fllx;
- doc->pages[doc->numpages].boundingbox[LLY] = flly;
- doc->pages[doc->numpages].boundingbox[URX] = furx;
- doc->pages[doc->numpages].boundingbox[URY] = fury;
- if(fllx < doc->pages[doc->numpages].boundingbox[LLX])
- doc->pages[doc->numpages].boundingbox[LLX]--;
- if(flly < doc->pages[doc->numpages].boundingbox[LLY])
- doc->pages[doc->numpages].boundingbox[LLY]--;
- if(furx > doc->pages[doc->numpages].boundingbox[URX])
- doc->pages[doc->numpages].boundingbox[URX]++;
- if(fury > doc->pages[doc->numpages].boundingbox[URY])
- doc->pages[doc->numpages].boundingbox[URY]++;
- }
- }
- }
- }
- }
- section_len += line_len;
- doc->pages[doc->numpages].end = position;
- doc->pages[doc->numpages].len = section_len - line_len;
- doc->numpages++;
- }
-
- /* Document Trailer */
-
- if(beginsection) {
- doc->begintrailer = beginsection;
- beginsection = 0;
- }
- else {
- doc->begintrailer = position;
- section_len = line_len;
- }
-
- preread = 1;
- while((preread ||
- readline(fd, &line, &position, &line_len)) &&
- !(respect_eof && DSCcomment(line) && iscomment(line + 2, "EOF"))) {
- if(!preread)
- section_len += line_len;
- preread = 0;
- if(!DSCcomment(line)) {
- /* Do nothing */
- }
- else if(iscomment(line + 2, "Page:")) {
- g_free(get_next_text(line + length("%%Page:"), &next_char));
- if(sscanf(next_char, "%d", &thispage) != 1)
- thispage = 0;
- if(!ignore && thispage == nextpage) {
- if(doc->numpages > 0) {
- doc->pages[doc->numpages - 1].end = position;
- doc->pages[doc->numpages - 1].len += section_len - line_len;
- }
- else {
- if(doc->endsetup) {
- doc->endsetup = position;
- doc->endsetup += section_len - line_len;
- }
- else if(doc->endprolog) {
- doc->endprolog = position;
- doc->endprolog += section_len - line_len;
- }
- }
- goto newpage;
- }
- }
- else if(!respect_eof && iscomment(line + 2, "Trailer")) {
- /* What we thought was the start of the trailer was really */
- /* the trailer of an EPS on the page. */
- /* Set the end of the page to this trailer and keep scanning. */
- if(doc->numpages > 0) {
- doc->pages[doc->numpages - 1].end = position;
- doc->pages[doc->numpages - 1].len += section_len - line_len;
- }
- doc->begintrailer = position;
- section_len = line_len;
- }
- else if(bb_set == ATEND && iscomment(line + 2, "BoundingBox:")) {
- if(sscanf(line + length("%%BoundingBox:"), "%d %d %d %d",
- &(doc->boundingbox[LLX]),
- &(doc->boundingbox[LLY]),
- &(doc->boundingbox[URX]), &(doc->boundingbox[URY])) != 4) {
- float fllx, flly, furx, fury;
- if(sscanf(line + length("%%BoundingBox:"), "%f %f %f %f",
- &fllx, &flly, &furx, &fury) == 4) {
- doc->boundingbox[LLX] = fllx;
- doc->boundingbox[LLY] = flly;
- doc->boundingbox[URX] = furx;
- doc->boundingbox[URY] = fury;
- if(fllx < doc->boundingbox[LLX])
- doc->boundingbox[LLX]--;
- if(flly < doc->boundingbox[LLY])
- doc->boundingbox[LLY]--;
- if(furx > doc->boundingbox[URX])
- doc->boundingbox[URX]++;
- if(fury > doc->boundingbox[URY])
- doc->boundingbox[URY]++;
- }
- }
- }
- else if(orientation_set == ATEND && iscomment(line + 2, "Orientation:")) {
- sscanf(line + length("%%Orientation:"), "%256s", text);
- if(strcmp(text, "Portrait") == 0) {
- doc->orientation = GTK_GS_ORIENTATION_PORTRAIT;
- }
- else if(strcmp(text, "Landscape") == 0) {
- doc->orientation = GTK_GS_ORIENTATION_LANDSCAPE;
- }
- else if(strcmp(text, "Seascape") == 0) {
- doc->orientation = GTK_GS_ORIENTATION_SEASCAPE;
- }
- }
- else if(page_order_set == ATEND && iscomment(line + 2, "PageOrder:")) {
- sscanf(line + length("%%PageOrder:"), "%256s", text);
- if(strcmp(text, "Ascend") == 0) {
- doc->pageorder = ASCEND;
- }
- else if(strcmp(text, "Descend") == 0) {
- doc->pageorder = DESCEND;
- }
- else if(strcmp(text, "Special") == 0) {
- doc->pageorder = SPECIAL;
- }
- }
- else if(pages_set == ATEND && iscomment(line + 2, "Pages:")) {
- if(sscanf(line + length("%%Pages:"), "%*u %d", &i) == 1) {
- if(page_order_set == NONE) {
- if(i == -1)
- doc->pageorder = DESCEND;
- else if(i == 0)
- doc->pageorder = SPECIAL;
- else if(i == 1)
- doc->pageorder = ASCEND;
- }
- }
- }
- }
- section_len += line_len;
- if(DSCcomment(line) && iscomment(line + 2, "EOF")) {
- readline(fd, &line, &position, &line_len);
- section_len += line_len;
- }
- doc->endtrailer = position;
- doc->lentrailer = section_len - line_len;
-
-#if 0
- section_len = line_len;
- preread = 1;
- while(preread || readline(line, sizeof line, file, &position, &line_len)) {
- if(!preread)
- section_len += line_len;
- preread = 0;
- if(DSCcomment(line) && iscomment(line + 2, "Page:")) {
- g_free(get_next_text(line + length("%%Page:"), &next_char));
- if(sscanf(next_char, "%d", &thispage) != 1)
- thispage = 0;
- if(!ignore && thispage == nextpage) {
- if(doc->numpages > 0) {
- doc->pages[doc->numpages - 1].end = position;
- doc->pages[doc->numpages - 1].len += doc->lentrailer +
- section_len - line_len;
- }
- else {
- if(doc->endsetup) {
- doc->endsetup = position;
- doc->endsetup += doc->lentrailer + section_len - line_len;
- }
- else if(doc->endprolog) {
- doc->endprolog = position;
- doc->endprolog += doc->lentrailer + section_len - line_len;
- }
- }
- goto newpage;
- }
- }
- }
-#endif
- ps_io_exit(fd);
- return doc;
-}
-
-/*
- * psfree -- free dynamic storage associated with document structure.
- */
-
-void
-psfree(doc)
- struct document *doc;
-{
- int i;
-
- if(doc) {
- /*
- printf("This document exists\n");
- */
- for(i = 0; i < doc->numpages; i++) {
- if(doc->pages[i].label)
- g_free(doc->pages[i].label);
- }
- for(i = 0; i < doc->numsizes; i++) {
- if(doc->size[i].name)
- g_free(doc->size[i].name);
- }
- if(doc->title)
- g_free(doc->title);
- if(doc->date)
- g_free(doc->date);
- if(doc->creator)
- g_free(doc->creator);
- if(doc->pages)
- g_free(doc->pages);
- if(doc->size)
- g_free(doc->size);
- g_free(doc);
- }
-}
-
-/*
- * gettextine -- skip over white space and return the rest of the line.
- * If the text begins with '(' return the text string
- * using get_next_text().
- */
-
-static char *
-gettextline(char *line)
-{
- char *cp;
-
- while(*line && (*line == ' ' || *line == '\t'))
- line++;
- if(*line == '(') {
- return get_next_text(line, NULL);
- }
- else {
- if(strlen(line) == 0)
- return NULL;
-
- cp = g_strdup(line);
-
- /* Remove end of line */
- if(cp[strlen(line) - 2] == '\r' && cp[strlen(line) - 1] == '\n')
- /* Handle DOS \r\n */
- cp[strlen(line) - 2] = '\0';
- else if(cp[strlen(line) - 1] == '\n' || cp[strlen(line) - 1] == '\r')
- /* Handle mac and unix */
- cp[strlen(line) - 1] = '\0';
-
- return cp;
- }
-}
-
-/*
- * get_next_text -- return the next text string on the line.
- * return NULL if nothing is present.
- */
-
-static char *
-get_next_text(line, next_char)
- char *line;
- char **next_char;
-{
- char text[PSLINELENGTH]; /* Temporary storage for text */
- char *cp;
- int quoted = 0;
-
- while(*line && (*line == ' ' || *line == '\t'))
- line++;
- cp = text;
- if(*line == '(') {
- int level = 0;
- quoted = 1;
- line++;
- while(*line && !(*line == ')' && level == 0)
- && (cp - text) < PSLINELENGTH - 1) {
- if(*line == '\\') {
- if(*(line + 1) == 'n') {
- *cp++ = '\n';
- line += 2;
- }
- else if(*(line + 1) == 'r') {
- *cp++ = '\r';
- line += 2;
- }
- else if(*(line + 1) == 't') {
- *cp++ = '\t';
- line += 2;
- }
- else if(*(line + 1) == 'b') {
- *cp++ = '\b';
- line += 2;
- }
- else if(*(line + 1) == 'f') {
- *cp++ = '\f';
- line += 2;
- }
- else if(*(line + 1) == '\\') {
- *cp++ = '\\';
- line += 2;
- }
- else if(*(line + 1) == '(') {
- *cp++ = '(';
- line += 2;
- }
- else if(*(line + 1) == ')') {
- *cp++ = ')';
- line += 2;
- }
- else if(*(line + 1) >= '0' && *(line + 1) <= '9') {
- if(*(line + 2) >= '0' && *(line + 2) <= '9') {
- if(*(line + 3) >= '0' && *(line + 3) <= '9') {
- *cp++ =
- ((*(line + 1) - '0') * 8 + *(line + 2) -
- '0') * 8 + *(line + 3) - '0';
- line += 4;
- }
- else {
- *cp++ = (*(line + 1) - '0') * 8 + *(line + 2) - '0';
- line += 3;
- }
- }
- else {
- *cp++ = *(line + 1) - '0';
- line += 2;
- }
- }
- else {
- line++;
- *cp++ = *line++;
- }
- }
- else if(*line == '(') {
- level++;
- *cp++ = *line++;
- }
- else if(*line == ')') {
- level--;
- *cp++ = *line++;
- }
- else {
- *cp++ = *line++;
- }
- }
- }
- else {
- while(*line && !(*line == ' ' || *line == '\t' || *line == '\n')
- && (cp - text) < PSLINELENGTH - 1)
- *cp++ = *line++;
- }
- *cp = '\0';
- if(next_char)
- *next_char = line;
- if(!quoted && strlen(text) == 0)
- return NULL;
- return g_strdup(text);
-}
-
-/*
- * pscopy -- copy lines of Postscript from a section of one file
- * to another file.
- * Automatically switch to binary copying whenever
- * %%BeginBinary/%%EndBinary or %%BeginData/%%EndData
- * comments are encountered.
- */
-
-void
-pscopy(from, to, begin, end)
- FILE *from;
- GtkGSDocSink *to;
- long begin; /* set negative to avoid initial seek */
- long end;
-{
- char line[PSLINELENGTH]; /* 255 characters + 1 newline + 1 NULL */
- char text[PSLINELENGTH]; /* Temporary storage for text */
- unsigned int num;
- int i;
- char buf[BUFSIZ];
-
- if(begin >= 0)
- fseek(from, begin, SEEK_SET);
- while(ftell(from) < end) {
- fgets(line, sizeof line, from);
- gtk_gs_doc_sink_write(to, line, strlen(line));
-
- if(!(DSCcomment(line) && iscomment(line + 2, "Begin"))) {
- /* Do nothing */
- }
- else if(iscomment(line + 7, "Data:")) {
- text[0] = '\0';
- if(sscanf(line + length("%%BeginData:"), "%d %*s %256s", &num, text) >= 1) {
- if(strcmp(text, "Lines") == 0) {
- for(i = 0; i < num; i++) {
- fgets(line, sizeof(line), from);
- gtk_gs_doc_sink_write(to, line, strlen(line));
- }
- }
- else {
- while(num > BUFSIZ) {
- fread(buf, sizeof(char), BUFSIZ, from);
- gtk_gs_doc_sink_write(to, buf, BUFSIZ);
- num -= BUFSIZ;
- }
- fread(buf, sizeof(char), num, from);
- gtk_gs_doc_sink_write(to, buf, num);
- }
- }
- }
- else if(iscomment(line + 7, "Binary:")) {
- if(sscanf(line + length("%%BeginBinary:"), "%d", &num) == 1) {
- while(num > BUFSIZ) {
- fread(buf, sizeof(char), BUFSIZ, from);
- gtk_gs_doc_sink_write(to, buf, BUFSIZ);
- num -= BUFSIZ;
- }
- fread(buf, sizeof(char), num, from);
- gtk_gs_doc_sink_write(to, buf, num);
- }
- }
- }
-}
-
-/*
- * pscopyuntil -- copy lines of Postscript from a section of one file
- * to another file until a particular comment is reached.
- * Automatically switch to binary copying whenever
- * %%BeginBinary/%%EndBinary or %%BeginData/%%EndData
- * comments are encountered.
- */
-
-char *
-pscopyuntil(FILE * from, GtkGSDocSink * to, long begin, long end,
- const char *comment)
-{
- char line[PSLINELENGTH]; /* 255 characters + 1 newline + 1 NULL */
- char text[PSLINELENGTH]; /* Temporary storage for text */
- unsigned int num;
- int comment_length;
- int i;
- char buf[BUFSIZ];
-
- if(comment != NULL)
- comment_length = strlen(comment);
- else
- comment_length = 0;
- if(begin >= 0)
- fseek(from, begin, SEEK_SET);
-
- while(ftell(from) < end && !feof(from)) {
- fgets(line, sizeof line, from);
-
- /* iscomment cannot be used here,
- * because comment_length is not known at compile time. */
- if(comment != NULL && strncmp(line, comment, comment_length) == 0) {
- return g_strdup(line);
- }
- gtk_gs_doc_sink_write(to, line, strlen(line));
- if(!(DSCcomment(line) && iscomment(line + 2, "Begin"))) {
- /* Do nothing */
- }
- else if(iscomment(line + 7, "Data:")) {
- text[0] = '\0';
- if(sscanf(line + length("%%BeginData:"), "%d %*s %256s", &num, text) >= 1) {
- if(strcmp(text, "Lines") == 0) {
- for(i = 0; i < num; i++) {
- fgets(line, sizeof line, from);
- gtk_gs_doc_sink_write(to, line, strlen(line));
- }
- }
- else {
- while(num > BUFSIZ) {
- fread(buf, sizeof(char), BUFSIZ, from);
- gtk_gs_doc_sink_write(to, buf, BUFSIZ);
- num -= BUFSIZ;
- }
- fread(buf, sizeof(char), num, from);
- gtk_gs_doc_sink_write(to, buf, num);
- }
- }
- }
- else if(iscomment(line + 7, "Binary:")) {
- if(sscanf(line + length("%%BeginBinary:"), "%d", &num) == 1) {
- while(num > BUFSIZ) {
- fread(buf, sizeof(char), BUFSIZ, from);
- gtk_gs_doc_sink_write(to, buf, BUFSIZ);
- num -= BUFSIZ;
- }
- fread(buf, sizeof(char), num, from);
- gtk_gs_doc_sink_write(to, buf, num);
- }
- }
- }
- return NULL;
-}
-
-/*
- * blank -- determine whether the line contains nothing but whitespace.
- */
-
-static int
-blank(char *line)
-{
- char *cp = line;
-
- while(*cp == ' ' || *cp == '\t')
- cp++;
- return *cp == '\n' || (*cp == '%' && (line[0] != '%' || line[1] != '%'));
-}
-
-/*##########################################################*/
-/* pscopydoc */
-/* Copy the headers, marked pages, and trailer to fp */
-/*##########################################################*/
-
-void
-pscopydoc(GtkGSDocSink * dest,
- char *src_filename, struct document *d, gint * pagelist)
-{
- FILE *src_file;
- char text[PSLINELENGTH];
- char *comment;
- gboolean pages_written = FALSE;
- gboolean pages_atend = FALSE;
- int pages;
- int page = 1;
- int i, j;
- int here;
-
- src_file = fopen(src_filename, "r");
- i = 0;
- pages = 0;
- for(i = 0; i < d->numpages; i++) {
- if(pagelist[i])
- pages++;
- }
-
- here = d->beginheader;
-
- while((comment = pscopyuntil(src_file, dest, here, d->endheader, "%%Pages:"))) {
- here = ftell(src_file);
- if(pages_written || pages_atend) {
- g_free(comment);
- continue;
- }
- sscanf(comment + length("%%Pages:"), "%256s", text);
- if(strcmp(text, "(atend)") == 0) {
- gtk_gs_doc_sink_write(dest, comment, strlen(comment));
- pages_atend = TRUE;
- }
- else {
- switch (sscanf(comment + length("%%Pages:"), "%*d %d", &i)) {
- case 1:
- gtk_gs_doc_sink_printf(dest, "%%%%Pages: %d %d\n", pages, i);
- break;
- default:
- gtk_gs_doc_sink_printf(dest, "%%%%Pages: %d\n", pages);
- break;
- }
- pages_written = TRUE;
- }
- g_free(comment);
- }
- pscopyuntil(src_file, dest, d->beginpreview, d->endpreview, NULL);
- pscopyuntil(src_file, dest, d->begindefaults, d->enddefaults, NULL);
- pscopyuntil(src_file, dest, d->beginprolog, d->endprolog, NULL);
- pscopyuntil(src_file, dest, d->beginsetup, d->endsetup, NULL);
-
- for(i = 0; i < d->numpages; i++) {
- if(d->pageorder == DESCEND)
- j = (d->numpages - 1) - i;
- else
- j = i;
- j = i;
- if(pagelist[j]) {
- comment = pscopyuntil(src_file, dest,
- d->pages[i].begin, d->pages[i].end, "%%Page:");
- gtk_gs_doc_sink_printf(dest, "%%%%Page: %s %d\n",
- d->pages[i].label, page++);
- g_free(comment);
- pscopyuntil(src_file, dest, -1, d->pages[i].end, NULL);
- }
- }
-
- here = d->begintrailer;
- while((comment = pscopyuntil(src_file, dest, here, d->endtrailer,
- "%%Pages:"))) {
- here = ftell(src_file);
- if(pages_written) {
- g_free(comment);
- continue;
- }
- switch (sscanf(comment + length("%%Pages:"), "%*d %d", &i)) {
- case 1:
- gtk_gs_doc_sink_printf(dest, "%%%%Pages: %d %d\n", pages, i);
- break;
- default:
- gtk_gs_doc_sink_printf(dest, "%%%%Pages: %d\n", pages);
- break;
- }
- pages_written = TRUE;
- g_free(comment);
- }
-
- fclose(src_file);
-}
-
-/*----------------------------------------------------------*/
-/* ps_io_init */
-/*----------------------------------------------------------*/
-
-#define FD_FILE (fd->file)
-#define FD_FILE_DESC (fd->file_desc)
-#define FD_FILEPOS (fd->filepos)
-#define FD_LINE_BEGIN (fd->line_begin)
-#define FD_LINE_END (fd->line_end)
-#define FD_LINE_LEN (fd->line_len)
-#define FD_LINE_TERMCHAR (fd->line_termchar)
-#define FD_BUF (fd->buf)
-#define FD_BUF_END (fd->buf_end)
-#define FD_BUF_SIZE (fd->buf_size)
-#define FD_STATUS (fd->status)
-
-#define FD_STATUS_OKAY 0
-#define FD_STATUS_BUFTOOLARGE 1
-#define FD_STATUS_NOMORECHARS 2
-
-#define LINE_CHUNK_SIZE 4096
-#define MAX_PS_IO_FGETCHARS_BUF_SIZE 57344
-#define BREAK_PS_IO_FGETCHARS_BUF_SIZE 49152
-
-static FileData ps_io_init(file)
- FILE *file;
-{
- FileData fd;
- size_t size = sizeof(FileDataStruct);
-
- fd = (FileData) g_malloc(size);
- memset((void*) fd ,0,(size_t)size);
-
- rewind(file);
- FD_FILE = file;
- FD_FILE_DESC = fileno(file);
- FD_FILEPOS = ftell(file);
- FD_BUF_SIZE = (2*LINE_CHUNK_SIZE)+1;
- FD_BUF = g_malloc(FD_BUF_SIZE);
- FD_BUF[0] = '\0';
- return(fd);
-}
-
-/*----------------------------------------------------------*/
-/* ps_io_exit */
-/*----------------------------------------------------------*/
-
-static void
-ps_io_exit(fd)
- FileData fd;
-{
- g_free(FD_BUF);
- g_free(fd);
-}
-
-/*----------------------------------------------------------*/
-/* ps_io_fseek */
-/*----------------------------------------------------------*/
-
-/*static int
-ps_io_fseek(fd,offset)
- FileData fd;
- int offset;
-{
- int status;
- status=fseek(FD_FILE,(long)offset,SEEK_SET);
- FD_BUF_END = FD_LINE_BEGIN = FD_LINE_END = FD_LINE_LEN = 0;
- FD_FILEPOS = offset;
- FD_STATUS = FD_STATUS_OKAY;
- return(status);
-}*/
-
-/*----------------------------------------------------------*/
-/* ps_io_ftell */
-/*----------------------------------------------------------*/
-
-/*static int
-ps_io_ftell(fd)
- FileData fd;
-{
- return(FD_FILEPOS);
-}*/
-
-/*----------------------------------------------------------*/
-/* ps_io_fgetchars */
-/*----------------------------------------------------------*/
-
-#ifdef USE_MEMMOVE_CODE
-static void ps_memmove (d, s, l)
- char *d;
- const char *s;
- unsigned l;
-{
- if (s < d) for (s += l, d += l; l; --l) *--d = *--s;
- else if (s != d) for (; l; --l) *d++ = *s++;
-}
-#else
-# define ps_memmove memmove
-#endif
-
-static char * ps_io_fgetchars(fd,num)
- FileData fd;
- int num;
-{
- char *eol=NULL,*tmp;
- size_t size_of_char = sizeof(char);
-
- if (FD_STATUS != FD_STATUS_OKAY) {
- return(NULL);
- }
-
- FD_BUF[FD_LINE_END] = FD_LINE_TERMCHAR; /* restoring char previously exchanged against '\0' */
- FD_LINE_BEGIN = FD_LINE_END;
-
- do {
- if (num<0) { /* reading whole line */
- if (FD_BUF_END-FD_LINE_END) {
- /* strpbrk is faster but fails on lines with embedded NULLs
- eol = strpbrk(FD_BUF+FD_LINE_END,"\n\r");
- */
- tmp = FD_BUF + FD_BUF_END;
- eol = FD_BUF + FD_LINE_END;
- while (eol < tmp && *eol != '\n' && *eol != '\r') eol++;
- if (eol >= tmp) eol = NULL;
- if (eol) {
- if (*eol=='\r' && *(eol+1)=='\n') eol += 2;
- else eol++;
- break;
- }
- }
- } else { /* reading specified num of chars */
- if (FD_BUF_END >= FD_LINE_BEGIN+num) {
- eol = FD_BUF+FD_LINE_BEGIN+num;
- break;
- }
- }
-
- if (FD_BUF_END - FD_LINE_BEGIN > BREAK_PS_IO_FGETCHARS_BUF_SIZE) {
- eol = FD_BUF + FD_BUF_END - 1;
- break;
- }
-
- while (FD_BUF_SIZE < FD_BUF_END+LINE_CHUNK_SIZE+1) {
- if (FD_BUF_SIZE > MAX_PS_IO_FGETCHARS_BUF_SIZE) {
- /* we should never get here, since the line is broken
- artificially after BREAK_PS_IO_FGETCHARS_BUF_SIZE bytes. */
- fprintf(stderr, "gv: ps_io_fgetchars: Fatal Error: buffer became too large.\n");
- exit(-1);
- }
- if (FD_LINE_BEGIN) {
- ps_memmove((void*)FD_BUF,(void*)(FD_BUF+FD_LINE_BEGIN),
- ((size_t)(FD_BUF_END-FD_LINE_BEGIN+1))*size_of_char);
- FD_BUF_END -= FD_LINE_BEGIN;
- FD_LINE_BEGIN = 0;
- } else {
- FD_BUF_SIZE = FD_BUF_SIZE+LINE_CHUNK_SIZE+1;
- FD_BUF = g_realloc(FD_BUF,FD_BUF_SIZE);
- }
- }
-
- FD_LINE_END = FD_BUF_END;
-#ifdef VMS
- /* different existing VMS file formats require that we use read here ###jp###,10/12/96 */
- if (num<0) FD_BUF_END += read(FD_FILE_DESC,FD_BUF+FD_BUF_END,LINE_CHUNK_SIZE);
- else FD_BUF_END += fread(FD_BUF+FD_BUF_END,size_of_char,LINE_CHUNK_SIZE,FD_FILE);
-#else
- /* read() seems to fail sometimes (? ? ?) so we always use fread ###jp###,07/31/96*/
- FD_BUF_END += fread(FD_BUF+FD_BUF_END,size_of_char,LINE_CHUNK_SIZE,FD_FILE);
-#endif
-
- FD_BUF[FD_BUF_END] = '\0';
- if (FD_BUF_END-FD_LINE_END == 0) {
- FD_STATUS = FD_STATUS_NOMORECHARS;
- return(NULL);
- }
- }
- while (1);
-
- FD_LINE_END = eol - FD_BUF;
- FD_LINE_LEN = FD_LINE_END - FD_LINE_BEGIN;
- FD_LINE_TERMCHAR = FD_BUF[FD_LINE_END];
- FD_BUF[FD_LINE_END] = '\0';
-#ifdef USE_FTELL_FOR_FILEPOS
- if (FD_LINE_END==FD_BUF_END) {
- /*
- For VMS we cannot assume that the record is FD_LINE_LEN bytes long
- on the disk. For stream_lf and stream_cr that is true, but not for
- other formats, since VAXC/DECC converts the formatting into a single \n.
- eg. variable format files have a 2-byte length and padding to an even
- number of characters. So, we use ftell for each record.
- This still will not work if we need to fseek to a \n or \r inside a
- variable record (ftell always returns the start of the record in this
- case).
- (Tim Adye, adye@v2.rl.ac.uk)
- */
- FD_FILEPOS = ftell(FD_FILE);
- } else
-#endif /* USE_FTELL_FOR_FILEPOS */
- FD_FILEPOS += FD_LINE_LEN;
-
- return(FD_BUF+FD_LINE_BEGIN);
-}
-
-/*----------------------------------------------------------*/
-/*
- readline()
- Read the next line in the postscript file.
- Automatically skip over data (as indicated by
- %%BeginBinary/%%EndBinary or %%BeginData/%%EndData
- comments.)
- Also, skip over included documents (as indicated by
- %%BeginDocument/%%EndDocument comments.)
-*/
-/*----------------------------------------------------------*/
-
-static char *readline (fd, lineP, positionP, line_lenP)
- FileData fd;
- char **lineP;
- long *positionP;
- unsigned int *line_lenP;
-{
- unsigned int nbytes=0;
- int skipped=0;
- char *line;
-
- if (positionP) *positionP = FD_FILEPOS;
- line = ps_io_fgetchars(fd,-1);
- if (!line) {
- *line_lenP = 0;
- *lineP = empty_string;
- return(NULL);
- }
-
- *line_lenP = FD_LINE_LEN;
-
-#define IS_COMMENT(comment) \
- (DSCcomment(line) && iscomment(line+2,(comment)))
-#define IS_BEGIN(comment) \
- (iscomment(line+7,(comment)))
-#define SKIP_WHILE(cond) \
- while (readline(fd, &line, NULL, &nbytes) && (cond)) *line_lenP += nbytes;\
- skipped=1;
-#define SKIP_UNTIL_1(comment) { \
- SKIP_WHILE((!IS_COMMENT(comment))) \
- }
-#define SKIP_UNTIL_2(comment1,comment2) { \
- SKIP_WHILE((!IS_COMMENT(comment1) && !IS_COMMENT(comment2)))\
- }
-
- if (!IS_COMMENT("Begin")) {} /* Do nothing */
- else if IS_BEGIN("Document:") SKIP_UNTIL_1("EndDocument")
- else if IS_BEGIN("Feature:") SKIP_UNTIL_1("EndFeature")
-#ifdef USE_ACROREAD_WORKAROUND
- else if IS_BEGIN("File") SKIP_UNTIL_2("EndFile","EOF")
-#else
- else if IS_BEGIN("File") SKIP_UNTIL_1("EndFile")
-#endif
- else if IS_BEGIN("Font") SKIP_UNTIL_1("EndFont")
- else if IS_BEGIN("ProcSet") SKIP_UNTIL_1("EndProcSet")
- else if IS_BEGIN("Resource") SKIP_UNTIL_1("EndResource")
- else if IS_BEGIN("Data:") {
- int num;
- char text[101];
- if (FD_LINE_LEN > 100) FD_BUF[100] = '\0';
- text[0] = '\0';
- if (sscanf(line+length("%%BeginData:"), "%d %*s %s", &num, text) >= 1) {
- if (strcmp(text, "Lines") == 0) {
- while (num) {
- line = ps_io_fgetchars(fd,-1);
- if (line) *line_lenP += FD_LINE_LEN;
- num--;
- }
- } else {
- int read_chunk_size = LINE_CHUNK_SIZE;
- while (num>0) {
- if (num <= LINE_CHUNK_SIZE) read_chunk_size=num;
- line = ps_io_fgetchars(fd,read_chunk_size);
- if (line) *line_lenP += FD_LINE_LEN;
- num -= read_chunk_size;
- }
- }
- }
- SKIP_UNTIL_1("EndData")
- }
- else if IS_BEGIN("Binary:") {
- int num;
- if (sscanf(line+length("%%BeginBinary:"), "%d", &num) == 1) {
- int read_chunk_size = LINE_CHUNK_SIZE;
- while (num>0) {
- if (num <= LINE_CHUNK_SIZE) read_chunk_size=num;
- line = ps_io_fgetchars(fd,read_chunk_size);
- if (line) *line_lenP += FD_LINE_LEN;
- num -= read_chunk_size;
- }
- SKIP_UNTIL_1("EndBinary")
- }
- }
-
- if (skipped) {
- *line_lenP += nbytes;
- *lineP = skipped_line;
- } else {
- *lineP = FD_BUF+FD_LINE_BEGIN;
- }
-
- return(FD_BUF+FD_LINE_BEGIN);
-}
-
-#define DEFAULT_PAGE_SIZE 1
-
-void
-psgetpagebox (const struct document *doc, int page, int *urx, int *ury, int *llx, int *lly)
-{
- gint new_llx = 0;
- gint new_lly = 0;
- gint new_urx = 0;
- gint new_ury = 0;
- GtkGSPaperSize *papersizes = gtk_gs_defaults_get_paper_sizes ();
- int new_pagesize = -1;
-
- if (new_pagesize == -1) {
- new_pagesize = DEFAULT_PAGE_SIZE;
- if (doc) {
- /* If we have a document:
- * We use -- the page size (if specified)
- * or the doc. size (if specified)
- * or the page bbox (if specified)
- * or the bounding box
- */
- if ((page >= 0) && (doc->numpages > page) &&
- (doc->pages) && (doc->pages[page].size)) {
- new_pagesize = doc->pages[page].size - doc->size;
- } else if (doc->default_page_size != NULL) {
- new_pagesize = doc->default_page_size - doc->size;
- } else if ((page >= 0) &&
- (doc->numpages > page) &&
- (doc->pages) &&
- (doc->pages[page].boundingbox[URX] >
- doc->pages[page].boundingbox[LLX]) &&
- (doc->pages[page].boundingbox[URY] >
- doc->pages[page].boundingbox[LLY])) {
- new_pagesize = -1;
- } else if ((doc->boundingbox[URX] > doc->boundingbox[LLX]) &&
- (doc->boundingbox[URY] > doc->boundingbox[LLY])) {
- new_pagesize = -1;
- }
- }
- }
-
- /* Compute bounding box */
- if (doc && (doc->epsf || new_pagesize == -1)) { /* epsf or bbox */
- if ((page >= 0) &&
- (doc->pages) &&
- (doc->pages[page].boundingbox[URX] >
- doc->pages[page].boundingbox[LLX]) &&
- (doc->pages[page].boundingbox[URY] >
- doc->pages[page].boundingbox[LLY])) {
- /* use page bbox */
- new_llx = doc->pages[page].boundingbox[LLX];
- new_lly = doc->pages[page].boundingbox[LLY];
- new_urx = doc->pages[page].boundingbox[URX];
- new_ury = doc->pages[page].boundingbox[URY];
- } else if ((doc->boundingbox[URX] > doc->boundingbox[LLX]) &&
- (doc->boundingbox[URY] > doc->boundingbox[LLY])) {
- /* use doc bbox */
- new_llx = doc->boundingbox[LLX];
- new_lly = doc->boundingbox[LLY];
- new_urx = doc->boundingbox[URX];
- new_ury = doc->boundingbox[URY];
- }
- } else {
- if (new_pagesize < 0)
- new_pagesize = DEFAULT_PAGE_SIZE;
- new_llx = new_lly = 0;
- if (doc && doc->size &&
- (new_pagesize < doc->numsizes)) {
- new_urx = doc->size[new_pagesize].width;
- new_ury = doc->size[new_pagesize].height;
- } else {
- new_urx = papersizes[new_pagesize].width;
- new_ury = papersizes[new_pagesize].height;
- }
- }
-
- if (new_urx <= new_llx)
- new_urx = papersizes[12].width;
- if (new_ury <= new_lly)
- new_ury = papersizes[12].height;
-
- *urx = new_urx;
- *ury = new_ury;
- *llx = new_llx;
- *lly = new_lly;
-}
generated by cgit v0.9.1 at 2024-04-23 17:29:14 (GMT)