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%{
/*
# ------------------------------------------------------------------------
# Copyright 2020-2022, Harald Lieder, mailto:harald.lieder@outlook.com
# License: GNU AFFERO GPL 3.0, https://www.gnu.org/licenses/agpl-3.0.html
#
# Part of "PyMuPDF", a Python binding for "MuPDF" (http://mupdf.com), a
# lightweight PDF, XPS, and E-book viewer, renderer and toolkit which is
# maintained and developed by Artifex Software, Inc. https://artifex.com.
# ------------------------------------------------------------------------
*/
//-----------------------------------------------------------------------------
// Convert any MuPDF document to a PDF
// Returns bytes object containing the PDF, created via 'write' function.
//-----------------------------------------------------------------------------
PyObject *JM_convert_to_pdf(fz_context *ctx, fz_document *doc, int fp, int tp, int rotate)
{
pdf_document *pdfout = pdf_create_document(ctx); // new PDF document
int i, incr = 1, s = fp, e = tp;
if (fp > tp) {
incr = -1; // count backwards
s = tp; // adjust ...
e = fp; // ... range
}
fz_rect mediabox;
int rot = JM_norm_rotation(rotate);
fz_device *dev = NULL;
fz_buffer *contents = NULL;
pdf_obj *resources = NULL;
fz_page *page=NULL;
fz_var(dev);
fz_var(contents);
fz_var(resources);
fz_var(page);
for (i = fp; INRANGE(i, s, e); i += incr) { // interpret & write document pages as PDF pages
fz_try(ctx) {
page = fz_load_page(ctx, doc, i);
mediabox = fz_bound_page(ctx, page);
dev = pdf_page_write(ctx, pdfout, mediabox, &resources, &contents);
fz_run_page(ctx, page, dev, fz_identity, NULL);
fz_close_device(ctx, dev);
fz_drop_device(ctx, dev);
dev = NULL;
pdf_obj *page_obj = pdf_add_page(ctx, pdfout, mediabox, rot, resources, contents);
pdf_insert_page(ctx, pdfout, -1, page_obj);
pdf_drop_obj(ctx, page_obj);
}
fz_always(ctx) {
pdf_drop_obj(ctx, resources);
fz_drop_buffer(ctx, contents);
fz_drop_device(ctx, dev);
fz_drop_page(ctx, page);
page = NULL;
dev = NULL;
contents = NULL;
resources = NULL;
}
fz_catch(ctx) {
fz_rethrow(ctx);
}
}
// PDF created - now write it to Python bytearray
PyObject *r = NULL;
fz_output *out = NULL;
fz_buffer *res = NULL;
// prepare write options structure
pdf_write_options opts = { 0 };
opts.do_garbage = 4;
opts.do_compress = 1;
opts.do_compress_images = 1;
opts.do_compress_fonts = 1;
opts.do_sanitize = 1;
opts.do_incremental = 0;
opts.do_ascii = 0;
opts.do_decompress = 0;
opts.do_linear = 0;
opts.do_clean = 1;
opts.do_pretty = 0;
fz_try(ctx) {
res = fz_new_buffer(ctx, 8192);
out = fz_new_output_with_buffer(ctx, res);
pdf_write_document(ctx, pdfout, out, &opts);
unsigned char *c = NULL;
size_t len = fz_buffer_storage(ctx, res, &c);
r = PyBytes_FromStringAndSize((const char *) c, (Py_ssize_t) len);
}
fz_always(ctx) {
pdf_drop_document(ctx, pdfout);
fz_drop_output(ctx, out);
fz_drop_buffer(ctx, res);
}
fz_catch(ctx) {
fz_rethrow(ctx);
}
return r;
}
%}
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