rename apps directory and reorganize macpdf.app

1 files changed, 173 insertions, 0 deletions

diff --git a/apps/pdfclean.c b/apps/pdfclean.c
new file mode 100644
index 00000000..a55b94ef
--- /dev/null
+++ b/apps/pdfclean.c
@@ -0,0 +1,173 @@
+#include <fitz.h>
+#include <mupdf.h>
+
+void usage()
+{
+	fprintf(stderr,
+		"usage: pdfclean [options] infile.pdf outfile.pdf\n"
+		"  -r\trebuild xref table\n"
+		"  -g\tgarbage collect unused objects\n"
+		"  -x\texpand compressed streams\n"
+		"  -d -\tset user password for decryption\n"
+		"  -e\tencrypt outfile\n"
+		"    -u -\tset user password for encryption\n"
+		"    -o -\tset owner password\n"
+		"    -p -\tset permissions\n"
+		"    -n -\tkey length in bits: 40 <= n <= 128\n"
+		);
+	exit(1);
+}
+
+void preloadobjstms(pdf_xref *xref)
+{
+	fz_error *error;
+	fz_obj *obj;
+	int i;
+
+	for (i = 0; i < xref->len; i++)
+	{
+		if (xref->table[i].type == 'o')
+		{
+			error = pdf_loadobject(&obj, xref, i, 0);
+			if (error) fz_abort(error);
+			fz_dropobj(obj);
+		}
+	}
+}
+
+void expandstreams(pdf_xref *xref)
+{
+	fz_error *error;
+	fz_obj *stmobj;
+	fz_buffer *buf;
+	fz_obj *stmlen;
+	int i, gen;
+
+	for (i = 0; i < xref->len; i++)
+	{
+		if (xref->table[i].type == 'n')
+		{
+			gen = xref->table[i].gen;
+
+			if (pdf_isstream(xref, i, gen))
+			{
+				error = pdf_loadobject(&stmobj, xref, i, gen);
+				if (error) fz_abort(error);
+
+				error = pdf_loadstream(&buf, xref, i, gen);
+				if (error) fz_abort(error);
+
+				fz_dictdels(stmobj, "Filter");
+				fz_dictdels(stmobj, "DecodeParms");
+
+				error = fz_newint(&stmlen, buf->wp - buf->rp);
+				if (error) fz_abort(error);
+				error = fz_dictputs(stmobj, "Length", stmlen);
+				if (error) fz_abort(error);
+				fz_dropobj(stmlen);
+
+				pdf_updateobject(xref, i, gen, stmobj);
+				pdf_updatestream(xref, i, gen, buf);
+
+				fz_dropobj(stmobj);
+			}
+		}
+	}
+}
+
+int main(int argc, char **argv)
+{
+	fz_error *error;
+	char *infile;
+	char *outfile;
+	pdf_xref *xref;
+	int c;
+
+	pdf_crypt *encrypt = 0;
+	int doencrypt = 0;
+	int dorepair = 0;
+	int doexpand = 0;
+	int dogc = 0;
+
+	char *userpw = "";
+	char *ownerpw = "";
+	int perms = -4; /* 0xfffffffc */
+	int keylen = 40;
+	char *password = "";
+
+	while ((c = getopt(argc, argv, "rgxd:eu:o:p:n:")) != -1)
+	{
+		switch (c)
+		{
+		case 'r': ++ dorepair; break;
+		case 'x': ++ doexpand; break;
+		case 'g': ++ dogc; break;
+		case 'e': ++ doencrypt; break;
+		case 'u': userpw = optarg; break;
+		case 'o': ownerpw = optarg; break;
+		case 'p': perms = atoi(optarg); break;
+		case 'n': keylen = atoi(optarg); break;
+		case 'd': password = optarg; break;
+		default: usage();
+		}
+	}
+
+	if (argc - optind < 2)
+		usage();
+
+	infile = argv[optind++];
+	outfile = argv[optind++];
+
+	error = pdf_newxref(&xref);
+
+	if (dorepair)
+		error = pdf_repairxref(xref, infile);
+	else
+		error = pdf_loadxref(xref, infile);
+	if (error)
+		fz_abort(error);
+
+	error = pdf_decryptxref(xref);
+	if (error)
+		fz_abort(error);
+
+	if (xref->crypt)
+	{
+		error = pdf_setpassword(xref->crypt, password);
+		if (error) fz_abort(error);
+	}
+
+	if (doencrypt)
+	{
+		fz_obj *id = fz_dictgets(xref->trailer, "ID");
+		if (!id)
+			fz_packobj(&id, "[(ABCDEFGHIJKLMNOP)(ABCDEFGHIJKLMNOP)]");
+		else
+			fz_keepobj(id);
+		error = pdf_newencrypt(&encrypt, userpw, ownerpw, perms, keylen, id);
+		if (error)
+			fz_abort(error);
+		fz_dropobj(id);
+	}
+
+	if (doexpand)
+		expandstreams(xref);
+
+	if (dogc)
+	{
+		preloadobjstms(xref);
+		pdf_garbagecollect(xref);
+	}
+
+	error = pdf_savexref(xref, outfile, encrypt);
+	if (error)
+		fz_abort(error);
+
+	if (encrypt)
+		pdf_dropcrypt(encrypt);
+
+	pdf_closexref(xref);
+
+	return 0;
+}
+