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unzip: tiny code shrink -2 bytes

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-05-24 04:46:18 +02:00
parent 4e8ff73e20
commit e98884b9be
1 changed files with 4 additions and 5 deletions
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9
archival/unzip.c
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@ -42,7 +42,7 @@ typedef union {
uint8_t raw[ZIP_HEADER_LEN]; uint8_t raw[ZIP_HEADER_LEN];
struct { struct {
uint16_t version; /* 0-1 */ uint16_t version; /* 0-1 */
uint16_t flags; /* 2-3 */ uint16_t zip_flags; /* 2-3 */
uint16_t method; /* 4-5 */ uint16_t method; /* 4-5 */
uint16_t modtime; /* 6-7 */ uint16_t modtime; /* 6-7 */
uint16_t moddate; /* 8-9 */ uint16_t moddate; /* 8-9 */
@ -66,7 +66,6 @@ struct BUG_zip_header_must_be_26_bytes {
#define FIX_ENDIANNESS_ZIP(zip_header) do { \ #define FIX_ENDIANNESS_ZIP(zip_header) do { \
(zip_header).formatted.version = SWAP_LE16((zip_header).formatted.version ); \ (zip_header).formatted.version = SWAP_LE16((zip_header).formatted.version ); \
(zip_header).formatted.flags = SWAP_LE16((zip_header).formatted.flags ); \
(zip_header).formatted.method = SWAP_LE16((zip_header).formatted.method ); \ (zip_header).formatted.method = SWAP_LE16((zip_header).formatted.method ); \
(zip_header).formatted.modtime = SWAP_LE16((zip_header).formatted.modtime ); \ (zip_header).formatted.modtime = SWAP_LE16((zip_header).formatted.modtime ); \
(zip_header).formatted.moddate = SWAP_LE16((zip_header).formatted.moddate ); \ (zip_header).formatted.moddate = SWAP_LE16((zip_header).formatted.moddate ); \
@ -491,11 +490,11 @@ int unzip_main(int argc, char **argv)
bb_error_msg_and_die("unsupported method %d", zip_header.formatted.method); bb_error_msg_and_die("unsupported method %d", zip_header.formatted.method);
} }
#if !ENABLE_DESKTOP #if !ENABLE_DESKTOP
if (zip_header.formatted.flags & 0x0009) { if (zip_header.formatted.zip_flags & SWAP_LE16(0x0009)) {
bb_error_msg_and_die("zip flags 1 and 8 are not supported"); bb_error_msg_and_die("zip flags 1 and 8 are not supported");
} }
#else #else
if (zip_header.formatted.flags & 0x0001) { if (zip_header.formatted.zip_flags & SWAP_LE16(0x0001)) {
/* 0x0001 - encrypted */ /* 0x0001 - encrypted */
bb_error_msg_and_die("zip flag 1 (encryption) is not supported"); bb_error_msg_and_die("zip flag 1 (encryption) is not supported");
} }
@ -503,7 +502,7 @@ int unzip_main(int argc, char **argv)
{ {
cdf_header_t cdf_header; cdf_header_t cdf_header;
cdf_offset = read_next_cdf(cdf_offset, &cdf_header); cdf_offset = read_next_cdf(cdf_offset, &cdf_header);
if (zip_header.formatted.flags & 0x0008) { if (zip_header.formatted.zip_flags & SWAP_LE16(0x0008)) {
/* 0x0008 - streaming. [u]cmpsize can be reliably gotten /* 0x0008 - streaming. [u]cmpsize can be reliably gotten
* only from Central Directory. See unzip_doc.txt */ * only from Central Directory. See unzip_doc.txt */
zip_header.formatted.crc32 = cdf_header.formatted.crc32; zip_header.formatted.crc32 = cdf_header.formatted.crc32;