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//
// Postscript Document Structure Convention handling routines.
//
// Copyright 2006 by Johannes Hofmann
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "PostscriptDSC.H"
PostscriptDSC::PostscriptDSC() {
bb_x = 0;
bb_y = 0;
bb_w = 594; // A4
bb_h = 841; //
setup_len = 0;
pages = 0;
page_off = NULL;
page_len = NULL;
}
PostscriptDSC::~PostscriptDSC() {
if (page_off) {
free(page_off);
}
if (page_len) {
free(page_len);
}
}
int
PostscriptDSC::parse(int fd) {
FILE *fp;
char linebuf[1024];
int x, y, w, h;
int p1, p2, ps;
int i = 0;
int bb_read = 0;
bb_x = 0;
bb_y = 0;
bb_w = 594; // A4
bb_h = 841; //
setup_len = 0;
pages = 0;
if (page_off) {
free(page_off);
page_off = NULL;
}
if(page_len) {
free(page_len);
page_len = NULL;
}
fp = fdopen(fd, "r");
if (!fp) {
perror("fdopen");
return 1;
}
while (fgets(linebuf, sizeof(linebuf), fp) != NULL) {
if (!bb_read &&
sscanf(linebuf, "%%%%BoundingBox: %d %d %d %d", &x, &y, &w, &h) == 4) {
bb_x = x;
bb_y = y;
bb_w = w;
bb_h = h;
bb_read++;
} else if (strncmp(linebuf, "%%EndSetup", strlen("%%EndSetup")) == 0) {
setup_len = ftello(fp);
} else if (sscanf(linebuf, "%%%%Pages: %d", &ps) == 1) {
if (pages != 0) {
fprintf(stderr, "Multiple Pages tags found\n");
return 1;
}
pages = ps;
page_off = (size_t*) malloc(sizeof(size_t) * pages);
memset(page_off, 0, sizeof(size_t) * pages);
page_len = (size_t*) malloc(sizeof(size_t) * pages);
memset(page_len, 0, sizeof(size_t) * pages);
} else if (sscanf(linebuf, "%%%%Page: %d %d", &p1, &p2) == 2) {
if (!page_off || !page_len) {
fprintf(stderr, "Number of pages not defined\n");
return 1;
}
if (p1 > pages || p1 < 1) {
fprintf(stderr, "Page %d out of range (1 - %d)\n", p1, pages);
return 1;
}
if (page_off[p1 - 1] != 0) {
fprintf(stderr, "Page %d already defined\n", p1);
return 1;
}
if (p1 > 1 && page_off[p1 - 2] == NULL) {
fprintf(stderr, "Page %d not yet defined\n", p1 - 1);
return 1;
}
page_off[p1 - 1] = ftello(fp);
if (p1 > 1) {
page_len[p1 - 2] = page_off[p1 - 1] - page_off[p1 - 2];
}
}
}
if (page_len && page_off) {
page_len[p1 - 1] = ftello(fp) - page_off[p1 - 1];
for (int i=0; i<pages; i++) {
if (page_off[i] == 0 || page_len[i] == 0) {
fprintf(stderr, "Page %d not defined\n", i);
return 1;
}
}
} else {
return 1;
}
return 0;
}
void
PostscriptDSC::get_bounding_box(int *x, int *y, int *w, int *h) {
*x = bb_x;
*y = bb_y;
*w = bb_w;
*h = bb_h;
}
int
PostscriptDSC::get_pages() {
return pages;
}
size_t
PostscriptDSC::get_setup_len() {
return setup_len;
}
size_t
PostscriptDSC::get_page_off(int p) {
return page_off[p];
}
size_t
PostscriptDSC::get_page_len(int p) {
return page_len[p];
}
void
PostscriptDSC::print() {
int i;
printf("x %d, y %d, w %d, h %d\n", bb_x, bb_y, bb_w, bb_h);
printf("setup_len %d\n", setup_len);
for (i=0; i<pages; i++) {
printf("p %d, off %d, len %d\n", i, page_off[i], page_len[i]);
}
}
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