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authorRob Landley <rob@landley.net>2006-11-26 18:27:33 -0500
committerRob Landley <rob@landley.net>2006-11-26 18:27:33 -0500
commit28a0dec5dd19458200a18609ba0cc8c2f3b4d22f (patch)
tree90ce70a9cb2f4b5ef615535ccd335c03fdcfa6b8 /lib
parent2de8f3e38315f9ce99e6284f9bf7e1a918539fe3 (diff)
downloadtoybox-28a0dec5dd19458200a18609ba0cc8c2f3b4d22f.tar.gz
Trawling through the archives: a broken test, an unnecessary memset, and a
unrolling a small memmove.
Diffstat (limited to 'lib')
-rw-r--r--lib/bunzip.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/bunzip.c b/lib/bunzip.c
index 974fdf80..48c987a1 100644
--- a/lib/bunzip.c
+++ b/lib/bunzip.c
@@ -91,7 +91,7 @@ static unsigned int get_bits(bunzip_data *bd, char bits_wanted)
// If we need to read more data from file into byte buffer, do so
if (bd->inbufPos == bd->inbufCount) {
- if (!(bd->inbufCount = read(bd->in_fd, bd->inbuf, IOBUF_SIZE)))
+ if (0 >= (bd->inbufCount = read(bd->in_fd, bd->inbuf, IOBUF_SIZE)))
longjmp(bd->jmpbuf, RETVAL_UNEXPECTED_INPUT_EOF);
bd->inbufPos = 0;
}
@@ -155,7 +155,6 @@ extern int read_bunzip_data(bunzip_data *bd)
// values were present. We make a translation table to convert the symbols
// back to the corresponding bytes.
t = get_bits(bd, 16);
- memset(symToByte,0,256);
symTotal = 0;
for (i=0; i<16; i++) {
if (t&(1<<(15-i))) {
@@ -182,7 +181,7 @@ extern int read_bunzip_data(bunzip_data *bd)
// Decode MTF to get the next selector
uc = mtfSymbol[j];
- memmove(mtfSymbol+1, mtfSymbol, j);
+ for (k=j; k; k--) mtfSymbol[k] = mtfSymbol[k-1];
mtfSymbol[0] = selectors[i] = uc;
}
// Read the huffman coding tables for each group, which code for symTotal