ref: 41e27b2d10c6a60c49931332e8677438736a1e36
dir: /os/boot/libflate/inflateblock.c/
#include "lib9.h" #include <flate.h> typedef struct Block Block; struct Block { uchar *pos; uchar *limit; }; static int blgetc(void *vb) { Block *b; b = vb; if(b->pos >= b->limit) return -1; return *b->pos++; } static int blwrite(void *vb, void *buf, int n) { Block *b; b = vb; if(n > b->limit - b->pos) n = b->limit - b->pos; memmove(b->pos, buf, n); b->pos += n; return n; } int inflateblock(uchar *dst, int dsize, uchar *src, int ssize) { Block bd, bs; int ok; bs.pos = src; bs.limit = src + ssize; bd.pos = dst; bd.limit = dst + dsize; ok = inflate(&bd, blwrite, &bs, blgetc); if(ok != FlateOk) return ok; return bd.pos - dst; }