fumiama/base16384
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添加平台适配

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fumiama
2021-10-29 22:03:53 +08:00
parent 60c8911bd8
commit eeea555ad9
2 changed files with 46 additions and 14 deletions
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34
32/base14.c
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@@ -2,7 +2,23 @@
//fumiama 20210408
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#if defined(__linux__)
# include <endian.h>
#elif defined(__FreeBSD__) || defined(__NetBSD__)
# include <sys/endian.h>
#elif defined(__OpenBSD__)
# include <sys/types.h>
# define be16toh(x) betoh16(x)
# define be32toh(x) betoh32(x)
# define be64toh(x) betoh64(x)
#elif defined(__MAC_10_0)
# define be16toh(x) ntohs(x)
# define be32toh(x) ntohl(x)
# define be64toh(x) ntohll(x)
# define htobe16(x) ntohs(x)
# define htobe32(x) htonl(x)
# define htobe64(x) htonll(x)
#endif
#include "base14.h"
//#define DEBUG
@@ -31,20 +47,20 @@ LENDAT* encode(const uint8_t* data, const int32_t len) {
int32_t i = 0;
for(; i <= len - 7; i += 7) {
register uint32_t sum = 0;
register uint32_t shift = htonl(*(uint32_t*)(data+i));
register uint32_t shift = htobe32(*(uint32_t*)(data+i));
sum |= (shift>>2) & 0x3fff0000;
sum |= (shift>>4) & 0x00003fff;
sum += 0x4e004e00;
vals[n++] = ntohl(sum);
vals[n++] = be32toh(sum);
shift <<= 26;
shift &= 0x3c000000;
sum = 0;
shift |= (htonl(*(uint32_t*)(data+i+4))>>6)&0x03fffffc;
shift |= (htobe32(*(uint32_t*)(data+i+4))>>6)&0x03fffffc;
sum |= shift & 0x3fff0000;
shift >>= 2;
sum |= shift & 0x00003fff;
sum += 0x4e004e00;
vals[n++] = ntohl(sum);
vals[n++] = be32toh(sum);
}
uint8_t o = offset;
if(o--) {
@@ -113,20 +129,20 @@ LENDAT* decode(const uint8_t* data, const int32_t len) {
int32_t i = 0;
for(; i <= outlen - 7; i+=7) { //n实际每次自增2
register uint32_t sum = 0;
register uint32_t shift = htonl(vals[n++]) - 0x4e004e00;
register uint32_t shift = htobe32(vals[n++]) - 0x4e004e00;
shift <<= 2;
sum |= shift & 0xfffc0000;
shift <<= 2;
sum |= shift & 0x0003fff0;
shift = htonl(vals[n++]) - 0x4e004e00;
shift = htobe32(vals[n++]) - 0x4e004e00;
sum |= shift >> 26;
*(uint32_t*)(decd->data+i) = ntohl(sum);
*(uint32_t*)(decd->data+i) = be32toh(sum);
sum = 0;
shift <<= 6;
sum |= shift & 0xffc00000;
shift <<= 2;
sum |= shift & 0x003fff00;
*(uint32_t*)(decd->data+i+4) = ntohl(sum);
*(uint32_t*)(decd->data+i+4) = be32toh(sum);
}
if(offset--) {
//这里有读取越界