ckolivas/lrzip
1
0
Fork 0
mirror of https://github.com/ckolivas/lrzip.git synced 2025-12-06 07:12:00 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add virtual read() support to the bufRead class to speed up encoding/decoding via the zpaq library.

Browse source
This commit is contained in:
Con Kolivas 2012-03-16 22:27:01 +11:00
parent a55250cf16
commit 4d48717949
1 changed files with 18 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
libzpaq/libzpaq.h
View file

@ -31,6 +31,7 @@ comprises the reference decoder for the ZPAQ level 2 standard.
#include <assert.h> #include <assert.h>
#include <stddef.h> #include <stddef.h>
#include <stdint.h> #include <stdint.h>
#include <string.h>
namespace libzpaq { namespace libzpaq {
@ -444,6 +445,7 @@ struct bufRead: public libzpaq::Reader {
uchar *s_buf; uchar *s_buf;
long long *s_len; long long *s_len;
bufRead(uchar *buf_, long long *n_): s_buf(buf_), s_len(n_) {} bufRead(uchar *buf_, long long *n_): s_buf(buf_), s_len(n_) {}
int get() { int get() {
if (*s_len > 0) { if (*s_len > 0) {
(*s_len)--; (*s_len)--;
@ -451,6 +453,22 @@ struct bufRead: public libzpaq::Reader {
} }
return -1; return -1;
} // read and return byte 0..255, or -1 at EOF } // read and return byte 0..255, or -1 at EOF
int read(char *buf, int n) {
int diff;
if (*s_len < 1)
return -1;
if (n > *s_len)
diff = *s_len;
else
diff = *s_len - n;
*s_len -= diff;
memcpy(buf, s_buf, diff);
return diff;
}
}; };
struct bufWrite: public libzpaq::Writer { struct bufWrite: public libzpaq::Writer {