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435a566751
* sumatrapdf - vendor import * everything compiles (libjpeg, poppler, fitz, sumatrapdf) * does NOT link (remove the comment tags in the parent directory.rbuild file (rosapps dir) to build it) svn path=/trunk/; revision=29295
47 lines
782 B
C
47 lines
782 B
C
#include "fitz-base.h"
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#include "fitz-stream.h"
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typedef struct fz_arc4c_s fz_arc4c;
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struct fz_arc4c_s
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{
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fz_filter super;
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fz_arc4 arc4;
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};
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fz_error *
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fz_newarc4filter(fz_filter **fp, unsigned char *key, unsigned keylen)
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{
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FZ_NEWFILTER(fz_arc4c, f, arc4filter);
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fz_arc4init(&f->arc4, key, keylen);
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return nil;
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}
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void
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fz_droparc4filter(fz_filter *f)
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{
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}
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fz_error *
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fz_processarc4filter(fz_filter *filter, fz_buffer *in, fz_buffer *out)
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{
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fz_arc4c *f = (fz_arc4c*)filter;
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int n;
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while (1)
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{
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if (in->rp + 1 > in->wp) {
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if (in->eof)
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return fz_iodone;
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return fz_ioneedin;
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}
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if (out->wp + 1 > out->ep)
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return fz_ioneedout;
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n = MIN(in->wp - in->rp, out->ep - out->wp);
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fz_arc4encrypt(&f->arc4, out->wp, in->rp, n);
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in->rp += n;
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out->wp += n;
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}
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}
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