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#include <fitz.h>
#include <mupdf.h>
static char *password = "";
static int dodecode = 0;
static int dorepair = 0;
static int doprintxref = 0;
typedef struct psobj_s psobj;
struct pdf_function_s
{
unsigned short type; /* 0=sample 2=exponential 3=stitching 4=postscript */
int m; /* number of input values */
int n; /* number of output values */
float *domain; /* even index : min value, odd index : max value */
float *range; /* even index : min value, odd index : max value */
union
{
struct {
unsigned short bps;
unsigned short order;
int *size; /* the num of samples in each input dimension */
float *encode;
float *decode;
int *samples;
} sa;
struct {
float n;
float *c0;
float *c1;
} e;
struct {
int k;
pdf_function **funcs;
float *bounds;
float *encode;
} st;
struct {
psobj *code;
int cap;
} p;
}u;
};
void usage()
{
fprintf(stderr, "usage: pdffunction [-drxs] [-u password] file.pdf oid [input ...]\n");
exit(1);
}
static int safecol = 0;
void printsafe(unsigned char *buf, int n)
{
int i;
for (i = 0; i < n; i++) {
if (buf[i] == '\r' || buf[i] == '\n') {
printf("\n");
safecol = 0;
}
else if (buf[i] < 32 || buf[i] > 126) {
printf(".");
safecol ++;
}
else {
printf("%c", buf[i]);
safecol ++;
}
if (safecol == 79) {
printf("\n");
safecol = 0;
}
}
}
void decodestream(pdf_xref *xref, int oid, int gid)
{
fz_error *error;
unsigned char buf[512];
safecol = 0;
error = pdf_openstream(xref, oid, gid);
if (error) fz_abort(error);
while (1)
{
int n = fz_read(xref->stream, buf, sizeof buf);
if (n == 0)
break;
if (n < 0)
fz_abort(fz_ferror(xref->stream));
printsafe(buf, n);
}
pdf_closestream(xref);
}
void copystream(pdf_xref *xref, int oid, int gid)
{
fz_error *error;
unsigned char buf[512];
safecol = 0;
error = pdf_openrawstream(xref, oid, gid);
if (error) fz_abort(error);
while (1)
{
int n = fz_read(xref->stream, buf, sizeof buf);
if (n == 0)
break;
if (n < 0)
fz_abort(fz_ferror(xref->stream));
printsafe(buf, n);
}
pdf_closestream(xref);
}
void printobject(pdf_xref *xref, int oid, int gid)
{
fz_error *error;
fz_obj *obj;
error = pdf_loadobject(&obj, xref, oid, gid);
if (error) fz_abort(error);
printf("%d %d obj\n", oid, gid);
fz_debugobj(obj);
printf("\n");
if (xref->table[oid].stmofs) {
printf("stream\n");
if (dodecode)
decodestream(xref, oid, gid);
else
copystream(xref, oid, gid);
printf("endstream\n");
}
printf("endobj\n");
fz_dropobj(obj);
}
int main(int argc, char **argv)
{
fz_error *error;
char *filename;
pdf_xref *xref;
int c;
while ((c = getopt(argc, argv, "drxopu:")) != -1)
{
switch (c)
{
case 'd':
dodecode ++;
break;
case 'r':
dorepair ++;
break;
case 'x':
doprintxref ++;
break;
case 'u':
password = optarg;
break;
default:
usage();
}
}
if (argc - optind == 0)
usage();
filename = argv[optind++];
if (dorepair)
error = pdf_repairpdf(&xref, filename);
else
error = pdf_openpdf(&xref, filename);
if (error)
fz_abort(error);
error = pdf_decryptpdf(xref);
if (error)
fz_abort(error);
if (xref->crypt)
{
error = pdf_setpassword(xref->crypt, password);
if (error) fz_abort(error);
}
if (optind == argc)
{
printf("trailer\n");
fz_debugobj(xref->trailer);
printf("\n");
}
else
{
int oid = atoi(argv[optind++]);
if(optind == argc)
printobject(xref, oid, 0);
else
{
float *in = nil, *out = nil;
pdf_function *func;
fz_obj *funcobj;
int i;
/* type 0 and type 4 funcs must be indirect to read stream */
error = fz_newindirect(&funcobj,oid,0);
if(error) fz_abort(error);
error = pdf_loadfunction(&func,xref,funcobj);
if(error) fz_abort(error);
in = fz_malloc(func->m * sizeof(float));
out = fz_malloc(func->n * sizeof(float));
if(!in || !out)
fz_abort(fz_outofmem);
for(i = 0; optind < argc; optind++, i++)
{
if(i >= func->m)
fz_abort(fz_throw("too much input values"));
in[i] = atof(argv[optind]);
}
if(i < func->m)
fz_abort(fz_throw("too few input values"));
error = pdf_evalfunction(func, in, func->m, out, func->n);
if(error) fz_abort(error);
for(i = 0; i < func->n; ++i)
fprintf(stderr, "output[%d] : %f\n", i, out[i]);
fz_dropobj(funcobj);
pdf_dropfunction(func);
}
}
for ( ; optind < argc; optind++)
{
printobject(xref, atoi(argv[optind]), 0);
printf("\n");
}
if (doprintxref)
pdf_debugpdf(xref);
pdf_closepdf(xref);
return 0;
}
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