mirror of
https://github.com/fumiama/base16384.git
synced 2026-06-06 18:50:31 +08:00
新的设计,速度快很多
This commit is contained in:
1
.gitignore
vendored
Normal file
1
.gitignore
vendored
Normal file
@@ -0,0 +1 @@
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build
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4
32/CMakeLists.txt
Normal file
4
32/CMakeLists.txt
Normal file
@@ -0,0 +1,4 @@
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cmake_minimum_required(VERSION 3.0.0)
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project(base1432 VERSION 2.0)
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add_library(base1432 ./base1432le.c)
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151
32/base1432le.c
Normal file
151
32/base1432le.c
Normal file
@@ -0,0 +1,151 @@
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//base1432le.c
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//fumiama 20210408
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#include <stdio.h>
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#include <stdlib.h>
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#include "base1432le.h"
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//#define DEBUG
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LENDAT* encode(const uint8_t* data, const u_int32_t len) {
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LENDAT* encd = (LENDAT*)malloc(sizeof(LENDAT));
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uint32_t outlen = len / 7 * 8;
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uint8_t offset = len % 7;
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switch(offset) { //算上偏移标志字符占用的2字节
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case 0: break;
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case 1: outlen += 4; break;
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case 2:
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case 3: outlen += 6; break;
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case 4:
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case 5: outlen += 8; break;
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case 6: outlen += 10; break;
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default: break;
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}
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#ifdef DEBUG
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printf("outlen: %llu, offset: %u, malloc: %llu\n", outlen, offset, outlen + 8);
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#endif
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encd->data = (uint8_t*)malloc(outlen + 8); //冗余的8B用于可能的结尾的覆盖
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encd->len = outlen;
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uint32_t* vals = (uint32_t*)(encd->data);
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uint32_t n = 0;
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uint32_t i = 0;
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for(; i < len; i += 7) {
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register uint32_t sum = 0x0000003f & ((uint32_t)data[i] >> 2);
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sum |= ((((uint32_t)data[i + 1] >> 2) | (data[i] << 6)) << 8) & 0x0000ff00;
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sum |= ((((uint32_t)data[i + 1] << 4) | ((uint32_t)data[i + 2] >> 4)) << 16) & 0x003f0000;
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sum |= ((((uint32_t)data[i + 2] << 4) | ((uint32_t)data[i + 3] >> 4)) << 24) & 0xff000000;
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sum += 0x004e004e;
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vals[n++] = sum;
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#ifdef DEBUG
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printf("n: %u, add sum: %08x\n", n, sum);
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#endif
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sum = ((((uint32_t)data[i + 3] << 2) | ((uint32_t)data[i + 4] >> 6))) & 0x0000003f;
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sum |= ((((uint32_t)data[i + 4] << 2) | ((uint32_t)data[i + 5] >> 6)) << 8) & 0x0000ff00;
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sum |= ((uint32_t)data[i + 5] << 16) & 0x003f0000;
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sum |= ((uint32_t)data[i + 6] << 24) & 0xff000000;
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sum += 0x004e004e;
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vals[n++] = sum;
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#ifdef DEBUG
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printf("n: %u, add sum: %08x\n", n, sum);
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#endif
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}
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if(offset > 0) {
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register uint32_t sum = 0x0000003f & (data[i] >> 2);
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sum |= (((uint32_t)data[i] << 6) << 8) & 0x0000c000;
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if(offset > 1) {
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sum |= (((uint32_t)data[i + 1] >> 2) << 8) & 0x00003f00;
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sum |= (((uint32_t)data[i + 1] << 4) << 16) & 0x00300000;
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if(offset > 2) {
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sum |= (((uint32_t)data[i + 2] >> 4) << 16) & 0x000f0000;
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sum |= (((uint32_t)data[i + 2] << 4) << 24) & 0xf0000000;
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if(offset == 2) {
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sum += 0x004e004e;
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vals[n++] = sum;
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}
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if(offset > 3) {
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sum |= (((uint32_t)data[i + 3] >> 4) << 24) & 0x0f000000;
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sum += 0x004e004e;
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vals[n++] = sum;
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sum = (((uint32_t)data[i + 3] << 2)) & 0x0000003c;
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if(offset > 4) {
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sum |= (((uint32_t)data[i + 4] >> 6)) & 0x00000003;
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sum |= (((uint32_t)data[i + 4] << 2) << 8) & 0x0000fc00;
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if(offset > 5) {
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sum |= (((uint32_t)data[i + 5] >> 6) << 8) & 0x00000300;
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sum |= ((uint32_t)data[i + 5] << 16) & 0x003f0000;
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}
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}
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sum += 0x004e004e;
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vals[n] = sum;
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}
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}
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}
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encd->data[outlen - 2] = '=';
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encd->data[outlen - 1] = offset;
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}
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return encd;
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}
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LENDAT* decode(const uint8_t* data, const u_int32_t len) {
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LENDAT* decd = (LENDAT*)malloc(sizeof(LENDAT));
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uint32_t outlen = len;
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uint8_t offset = 0;
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if(data[len-2] == '=') {
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offset = data[len-1];
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switch(offset) { //算上偏移标志字符占用的2字节
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case 0: break;
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case 1: outlen -= 4; break;
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case 2:
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case 3: outlen -= 6; break;
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case 4:
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case 5: outlen -= 8; break;
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case 6: outlen -= 10; break;
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default: break;
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}
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}
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outlen = outlen / 8 * 7 + offset;
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decd->data = (uint8_t*)malloc(outlen);
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decd->len = outlen;
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uint32_t* vals = (uint32_t*)data;
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uint32_t n = 0;
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uint32_t i = 0;
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for(; n < len / 4; n++) { //n实际每次自增2
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register uint32_t sum = vals[n++];
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sum -= 0x004e004e;
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decd->data[i++] = ((sum & 0x0000003f) << 2) | ((sum & 0x0000c000) >> 14);
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decd->data[i++] = ((sum & 0x00003f00) >> 6) | ((sum & 0x00300000) >> 20);
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decd->data[i++] = ((sum & 0x000f0000) >> 12) | ((sum & 0xf0000000) >> 28);
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decd->data[i] = ((sum & 0x0f000000) >> 20);
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sum = vals[n];
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sum -= 0x004e004e;
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decd->data[i++] |= ((sum & 0x0000003c) >> 2);
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decd->data[i++] = ((sum & 0x00000003) << 6) | ((sum & 0x0000fc00) >> 10);
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decd->data[i++] = ((sum & 0x00000300) >> 2) | ((sum & 0x003f0000) >> 16);
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decd->data[i++] = ((sum & 0xff000000) >> 24);
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}
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if(offset > 0) {
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register uint32_t sum = vals[n++];
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sum -= 0x0000004e;
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decd->data[i++] = ((sum & 0x0000003f) << 2) | ((sum & 0x0000c000) >> 14);
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if(offset > 1) {
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sum -= 0x004e0000;
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decd->data[i++] = ((sum & 0x00003f00) >> 6) | ((sum & 0x00300000) >> 20);
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if(offset > 2) {
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decd->data[i++] = ((sum & 0x000f0000) >> 12) | ((sum & 0xf0000000) >> 28);
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if(offset > 3) {
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decd->data[i++] = (sum & 0x0f000000) >> 20;
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sum = vals[n];
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sum -= 0x0000004e;
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decd->data[i++] |= (sum & 0x0000003c) >> 2;
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if(offset > 4) {
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decd->data[i++] = ((sum & 0x00000003) << 6) | ((sum & 0x0000fc00) >> 10);
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if(offset > 5) {
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sum -= 0x004e0000;
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decd->data[i++] = ((sum & 0x00000300) >> 2) | ((sum & 0x003f0000) >> 16);
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}
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}
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}
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}
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}
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}
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return decd;
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}
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13
32/base1432le.h
Normal file
13
32/base1432le.h
Normal file
@@ -0,0 +1,13 @@
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//base1432le.h
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//fumiama 20210408
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#include <stdint.h>
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#define B14BUFSIZ 8192
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struct LENDAT {
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uint8_t* data;
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uint32_t len;
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};
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typedef struct LENDAT LENDAT;
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LENDAT* encode(const uint8_t* data, const u_int32_t len);
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LENDAT* decode(const uint8_t* data, const u_int32_t len);
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4
64/CMakeLists.txt
Normal file
4
64/CMakeLists.txt
Normal file
@@ -0,0 +1,4 @@
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cmake_minimum_required(VERSION 3.0.0)
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project(base1464 VERSION 2.0)
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add_library(base1464 ./base1464le.c)
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@@ -1,4 +1,4 @@
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//basex64.c
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//base1464le.c
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//fumiama 20210407
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#include <stdio.h>
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#include <stdlib.h>
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@@ -6,7 +6,7 @@
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//#define DEBUG
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LENDAT* encode(const char* data, const u_int64_t len) {
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LENDAT* encode(const uint8_t* data, const u_int64_t len) {
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LENDAT* encd = (LENDAT*)malloc(sizeof(LENDAT));
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uint64_t outlen = len / 7 * 8;
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uint8_t offset = len % 7;
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@@ -28,7 +28,7 @@ LENDAT* encode(const char* data, const u_int64_t len) {
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uint64_t* vals = (uint64_t*)(encd->data);
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uint64_t n = 0;
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uint64_t i = 0;
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for(; i < len - 7; i += 7) {
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for(; i < len; i += 7) {
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register uint64_t sum = 0x000000000000003f & ((uint64_t)data[i] >> 2);
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sum |= ((((uint64_t)data[i + 1] >> 2) | (data[i] << 6)) << 8) & 0x000000000000ff00;
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sum |= ((((uint64_t)data[i + 1] << 4) | ((uint64_t)data[i + 2] >> 4)) << 16) & 0x00000000003f0000;
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@@ -77,7 +77,7 @@ LENDAT* encode(const char* data, const u_int64_t len) {
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return encd;
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}
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LENDAT* decode(const char* data, const u_int64_t len) {
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LENDAT* decode(const uint8_t* data, const u_int64_t len) {
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LENDAT* decd = (LENDAT*)malloc(sizeof(LENDAT));
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uint64_t outlen = len;
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uint8_t offset = 0;
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@@ -136,78 +136,3 @@ LENDAT* decode(const char* data, const u_int64_t len) {
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}
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return decd;
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}
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void encode_file(const char* input, const char* output) {
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FILE* fp = NULL;
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fp = fopen(input, "rb");
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if(fp) {
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FILE* fpo = NULL;
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fpo = fopen(output, "wb");
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if(fpo) {
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char* bufi = (char*)malloc(B14BUFSIZ/7*7);
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if(bufi) {
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int cnt = 0;
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fputc(0xFE, fpo);
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fputc(0xFF, fpo);
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while((cnt = fread(bufi, 1, B14BUFSIZ/7*7, fp))) {
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LENDAT* ld = encode(bufi, cnt);
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if(fwrite(ld->data, ld->len, 1, fpo) <= 0) {
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puts("Write file error!");
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exit(EXIT_FAILURE);
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}
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free(ld);
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}
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free(bufi);
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} else puts("Allocate input buffer error!");
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fclose(fpo);
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} else puts("Open output file error!");
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fclose(fp);
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} else puts("Open input file error!");
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}
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int rm_head(FILE* fp) {
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int ch = fgetc(fp);
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if(ch == 0xFE) fgetc(fp);
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else rewind(fp);
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}
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void decode_file(const char* input, const char* output) {
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FILE* fp = NULL;
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fp = fopen(input, "rb");
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if(fp) {
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FILE* fpo = NULL;
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fpo = fopen(output, "wb");
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if(fpo) {
|
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char* bufi = (char*)malloc(B14BUFSIZ/8*8);
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if(bufi) {
|
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int cnt = 0;
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rm_head(fp);
|
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while((cnt = fread(bufi, 1, B14BUFSIZ/7*7, fp))) {
|
||||
LENDAT* ld = decode(bufi, cnt);
|
||||
if(fwrite(ld->data, ld->len, 1, fpo) <= 0) {
|
||||
puts("Write file error!");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
free(ld);
|
||||
}
|
||||
free(bufi);
|
||||
} else puts("Allocate input buffer error!");
|
||||
fclose(fpo);
|
||||
} else puts("Open output file error!");
|
||||
fclose(fp);
|
||||
} else puts("Open input file error!");
|
||||
}
|
||||
|
||||
#define B1464LE_TEST
|
||||
#ifdef B1464LE_TEST
|
||||
int main(int argc, char** argv) {
|
||||
LENDAT* ld = encode("just a simple test from fumiama", 32);
|
||||
//puts(ld->data);
|
||||
LENDAT* le = decode(ld->data, ld->len);
|
||||
puts(le->data);
|
||||
if(argc == 4) {
|
||||
encode_file(argv[1], argv[2]);
|
||||
decode_file(argv[2], argv[3]);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
@@ -1,3 +1,5 @@
|
||||
//base1464le.h
|
||||
//fumiama 20210408
|
||||
#include <stdint.h>
|
||||
|
||||
#define B14BUFSIZ 16384
|
||||
@@ -6,3 +8,6 @@ struct LENDAT {
|
||||
uint64_t len;
|
||||
};
|
||||
typedef struct LENDAT LENDAT;
|
||||
|
||||
LENDAT* encode(const uint8_t* data, const u_int64_t len);
|
||||
LENDAT* decode(const uint8_t* data, const u_int64_t len);
|
||||
|
||||
Binary file not shown.
@@ -1,213 +0,0 @@
|
||||
//basex64.c
|
||||
//fumiama 20210407
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include "base1464le.h"
|
||||
|
||||
//#define DEBUG
|
||||
|
||||
LENDAT* encode(const char* data, const u_int64_t len) {
|
||||
LENDAT* encd = (LENDAT*)malloc(sizeof(LENDAT));
|
||||
uint64_t outlen = len / 7 * 8;
|
||||
uint8_t offset = len % 7;
|
||||
switch(offset) { //ﯿ下珏<E4B88B><E78F8F><EFBFBD>磏ᅲ寗ﯿ卣矯<E58DA3><E79FAF><EFBFBD>3篟<33><E7AF9F><EFBFBD>
|
||||
case 0: break;
|
||||
case 1: outlen += 4; break;
|
||||
case 2:
|
||||
case 3: outlen += 6; break;
|
||||
case 4:
|
||||
case 5: outlen += 8; break;
|
||||
case 6: outlen += 10; break;
|
||||
default: break;
|
||||
}
|
||||
#ifdef DEBUG
|
||||
printf("outlen: %llu, offset: %u, malloc: %llu\n", outlen, offset, outlen + 8);
|
||||
#endif
|
||||
encd->data = (uint8_t*)malloc(outlen + 8); //珟<><E78F9F><EFBFBD>盄8甫翏<E794AB><E7BF8F><EFBFBD>냿ᅣ结皇믏<E79A87><EBAF8F><EFBFBD>
|
||||
encd->len = outlen;
|
||||
uint64_t* vals = (uint64_t*)(encd->data);
|
||||
uint64_t n = 0;
|
||||
uint64_t i = 0;
|
||||
for(; i < len - 7; i += 7) {
|
||||
register uint64_t sum = 0x000000000000003f & ((uint64_t)data[i] >> 2);
|
||||
sum |= ((((uint64_t)data[i + 1] >> 2) | (data[i] << 6)) << 8) & 0x000000000000ff00;
|
||||
sum |= ((((uint64_t)data[i + 1] << 4) | ((uint64_t)data[i + 2] >> 4)) << 16) & 0x00000000003f0000;
|
||||
sum |= ((((uint64_t)data[i + 2] << 4) | ((uint64_t)data[i + 3] >> 4)) << 24) & 0x00000000ff000000;
|
||||
sum |= ((((uint64_t)data[i + 3] << 2) | ((uint64_t)data[i + 4] >> 6)) << 32) & 0x0000003f00000000;
|
||||
sum |= ((((uint64_t)data[i + 4] << 2) | ((uint64_t)data[i + 5] >> 6)) << 40) & 0x0000ff0000000000;
|
||||
sum |= ((uint64_t)data[i + 5] << 48) & 0x003f000000000000;
|
||||
sum |= ((uint64_t)data[i + 6] << 56) & 0xff00000000000000;
|
||||
sum += 0x004e004e004e004e;
|
||||
vals[n++] = sum;
|
||||
#ifdef DEBUG
|
||||
printf("i: %llu, add sum: %016llx\n", i, sum);
|
||||
#endif
|
||||
}
|
||||
if(offset > 0) {
|
||||
register uint64_t sum = 0x000000000000003f & (data[i] >> 2);
|
||||
sum |= (((uint64_t)data[i] << 6) << 8) & 0x000000000000c000;
|
||||
if(offset > 1) {
|
||||
sum |= (((uint64_t)data[i + 1] >> 2) << 8) & 0x0000000000003f00;
|
||||
sum |= (((uint64_t)data[i + 1] << 4) << 16) & 0x0000000000300000;
|
||||
if(offset > 2) {
|
||||
sum |= (((uint64_t)data[i + 2] >> 4) << 16) & 0x00000000000f0000;
|
||||
sum |= (((uint64_t)data[i + 2] << 4) << 24) & 0x00000000f0000000;
|
||||
if(offset > 3) {
|
||||
sum |= (((uint64_t)data[i + 3] >> 4) << 24) & 0x000000000f000000;
|
||||
sum |= (((uint64_t)data[i + 3] << 2) << 32) & 0x0000003c00000000;
|
||||
if(offset > 4) {
|
||||
sum |= (((uint64_t)data[i + 4] >> 6) << 32) & 0x0000000300000000;
|
||||
sum |= (((uint64_t)data[i + 4] << 2) << 40) & 0x0000fc0000000000;
|
||||
if(offset > 5) {
|
||||
sum |= (((uint64_t)data[i + 5] >> 6) << 40) & 0x0000030000000000;
|
||||
sum |= ((uint64_t)data[i + 5] << 48) & 0x003f000000000000;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
sum += 0x004e004e004e004e;
|
||||
vals[n] = sum;
|
||||
#ifdef DEBUG
|
||||
printf("i: %llu, add sum: %016llx\n", i, sum);
|
||||
#endif
|
||||
encd->data[outlen - 2] = '=';
|
||||
encd->data[outlen - 1] = offset;
|
||||
}
|
||||
return encd;
|
||||
}
|
||||
|
||||
LENDAT* decode(const char* data, const u_int64_t len) {
|
||||
LENDAT* decd = (LENDAT*)malloc(sizeof(LENDAT));
|
||||
uint64_t outlen = len;
|
||||
uint8_t offset = 0;
|
||||
if(data[len-2] == '=') {
|
||||
offset = data[len-1];
|
||||
switch(offset) { //ᅲ介移篏<E7A7BB><E7AF8F><EFBFBD>篟₩口的3ﯿ节
|
||||
case 0: break;
|
||||
case 1: outlen -= 4; break;
|
||||
case 2:
|
||||
case 3: outlen -= 6; break;
|
||||
case 4:
|
||||
case 5: outlen -= 8; break;
|
||||
case 6: outlen -= 10; break;
|
||||
default: break;
|
||||
}
|
||||
}
|
||||
outlen = outlen / 8 * 7 + offset;
|
||||
decd->data = (uint8_t*)malloc(outlen);
|
||||
decd->len = outlen;
|
||||
uint64_t* vals = (uint64_t*)data;
|
||||
uint64_t n = 0;
|
||||
uint64_t i = 0;
|
||||
for(; n < len / 8; n++) {
|
||||
register uint64_t sum = vals[n];
|
||||
sum -= 0x004e004e004e004e;
|
||||
decd->data[i++] = ((sum & 0x000000000000003f) << 2) | ((sum & 0x000000000000c000) >> 14);
|
||||
decd->data[i++] = ((sum & 0x0000000000003f00) >> 6) | ((sum & 0x0000000000300000) >> 20);
|
||||
decd->data[i++] = ((sum & 0x00000000000f0000) >> 12) | ((sum & 0x00000000f0000000) >> 28);
|
||||
decd->data[i++] = ((sum & 0x000000000f000000) >> 20) | ((sum & 0x0000003c00000000) >> 34);
|
||||
decd->data[i++] = ((sum & 0x0000000300000000) >> 26) | ((sum & 0x0000fc0000000000) >> 42);
|
||||
decd->data[i++] = ((sum & 0x0000030000000000) >> 34) | ((sum & 0x003f000000000000) >> 48);
|
||||
decd->data[i++] = ((sum & 0xff00000000000000) >> 56);
|
||||
}
|
||||
if(offset > 0) {
|
||||
register uint64_t sum = vals[n];
|
||||
sum -= 0x000000000000004e;
|
||||
decd->data[i++] = ((sum & 0x000000000000003f) << 2) | ((sum & 0x000000000000c000) >> 14);
|
||||
if(offset > 1) {
|
||||
sum -= 0x00000000004e0000;
|
||||
decd->data[i++] = ((sum & 0x0000000000003f00) >> 6) | ((sum & 0x0000000000300000) >> 20);
|
||||
if(offset > 2) {
|
||||
decd->data[i++] = ((sum & 0x00000000000f0000) >> 12) | ((sum & 0x00000000f0000000) >> 28);
|
||||
if(offset > 3) {
|
||||
sum -= 0x0000004e00000000;
|
||||
decd->data[i++] = ((sum & 0x000000000f000000) >> 20) | ((sum & 0x0000003c00000000) >> 34);
|
||||
if(offset > 4) {
|
||||
decd->data[i++] = ((sum & 0x0000000300000000) >> 26) | ((sum & 0x0000fc0000000000) >> 42);
|
||||
if(offset > 5) {
|
||||
sum -= 0x004e000000000000;
|
||||
decd->data[i++] = ((sum & 0x0000030000000000) >> 34) | ((sum & 0x003f000000000000) >> 48);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return decd;
|
||||
}
|
||||
|
||||
void encode_file(const char* input, const char* output) {
|
||||
FILE* fp = NULL;
|
||||
fp = fopen(input, "rb");
|
||||
if(fp) {
|
||||
FILE* fpo = NULL;
|
||||
fpo = fopen(output, "wb");
|
||||
if(fpo) {
|
||||
char* bufi = (char*)malloc(B14BUFSIZ/7*7);
|
||||
if(bufi) {
|
||||
int cnt = 0;
|
||||
fputc(0xFE, fpo);
|
||||
fputc(0xFF, fpo);
|
||||
while((cnt = fread(bufi, 1, B14BUFSIZ/7*7, fp))) {
|
||||
LENDAT* ld = encode(bufi, cnt);
|
||||
if(fwrite(ld->data, ld->len, 1, fpo) <= 0) {
|
||||
puts("Write file error!");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
free(ld);
|
||||
}
|
||||
free(bufi);
|
||||
} else puts("Allocate input buffer error!");
|
||||
fclose(fpo);
|
||||
} else puts("Open output file error!");
|
||||
fclose(fp);
|
||||
} else puts("Open input file error!");
|
||||
}
|
||||
|
||||
int rm_head(FILE* fp) {
|
||||
int ch = fgetc(fp);
|
||||
if(ch == 0xFE) fgetc(fp);
|
||||
else rewind(fp);
|
||||
}
|
||||
|
||||
void decode_file(const char* input, const char* output) {
|
||||
FILE* fp = NULL;
|
||||
fp = fopen(input, "rb");
|
||||
if(fp) {
|
||||
FILE* fpo = NULL;
|
||||
fpo = fopen(output, "wb");
|
||||
if(fpo) {
|
||||
char* bufi = (char*)malloc(B14BUFSIZ/8*8);
|
||||
if(bufi) {
|
||||
int cnt = 0;
|
||||
rm_head(fp);
|
||||
while((cnt = fread(bufi, 1, B14BUFSIZ/7*7, fp))) {
|
||||
LENDAT* ld = decode(bufi, cnt);
|
||||
if(fwrite(ld->data, ld->len, 1, fpo) <= 0) {
|
||||
puts("Write file error!");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
free(ld);
|
||||
}
|
||||
free(bufi);
|
||||
} else puts("Allocate input buffer error!");
|
||||
fclose(fpo);
|
||||
} else puts("Open output file error!");
|
||||
fclose(fp);
|
||||
} else puts("Open input file error!");
|
||||
}
|
||||
|
||||
#define B1464LE_TEST
|
||||
#ifdef B1464LE_TEST
|
||||
int main(int argc, char** argv) {
|
||||
LENDAT* ld = encode("just a simple test from fumiama", 32);
|
||||
//puts(ld->data);
|
||||
LENDAT* le = decode(ld->data, ld->len);
|
||||
puts(le->data);
|
||||
if(argc == 4) {
|
||||
encode_file(argv[1], argv[2]);
|
||||
decode_file(argv[2], argv[3]);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
14
CMakeLists.txt
Normal file
14
CMakeLists.txt
Normal file
@@ -0,0 +1,14 @@
|
||||
cmake_minimum_required(VERSION 3.0.0)
|
||||
project(base16384 VERSION 2.0)
|
||||
|
||||
add_executable(base16384 base16384.c)
|
||||
|
||||
IF(CMAKE_SIZEOF_VOID_P EQUAL 8)
|
||||
add_definitions("-DCPUBIT64")
|
||||
add_subdirectory("./64")
|
||||
target_link_libraries(base16384 base1464)
|
||||
ELSE()
|
||||
add_definitions("-DCPUBIT32")
|
||||
add_subdirectory("./32")
|
||||
target_link_libraries(base16384 base1432)
|
||||
ENDIF()
|
||||
105
base16384.c
Normal file
105
base16384.c
Normal file
@@ -0,0 +1,105 @@
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <time.h>
|
||||
#include "base16384.h"
|
||||
|
||||
void encode_file(const char* input, const char* output) {
|
||||
FILE* fp = NULL;
|
||||
fp = fopen(input, "rb");
|
||||
if(fp) {
|
||||
FILE* fpo = NULL;
|
||||
fpo = fopen(output, "wb");
|
||||
if(fpo) {
|
||||
char* bufi = (char*)malloc(B14BUFSIZ/7*7);
|
||||
if(bufi) {
|
||||
int cnt = 0;
|
||||
fputc(0xFE, fpo);
|
||||
fputc(0xFF, fpo);
|
||||
fflush(fpo);
|
||||
while((cnt = fread(bufi, sizeof(char), B14BUFSIZ/7*7, fp))) {
|
||||
LENDAT* ld = encode(bufi, cnt);
|
||||
if(fwrite(ld->data, ld->len, 1, fpo) <= 0) {
|
||||
puts("Write file error!");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
free(ld);
|
||||
}
|
||||
free(bufi);
|
||||
} else puts("Allocate input buffer error!");
|
||||
fclose(fpo);
|
||||
} else puts("Open output file error!");
|
||||
fclose(fp);
|
||||
} else puts("Open input file error!");
|
||||
}
|
||||
|
||||
int rm_head(FILE* fp) {
|
||||
int ch = fgetc(fp);
|
||||
if(ch == 0xFE) fgetc(fp);
|
||||
else rewind(fp);
|
||||
}
|
||||
|
||||
static int is_next_end(FILE* fp) {
|
||||
int ch = fgetc(fp);
|
||||
if(ch == '=') return fgetc(fp);
|
||||
else {
|
||||
ungetc(ch, fp);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
void decode_file(const char* input, const char* output) {
|
||||
FILE* fp = NULL;
|
||||
fp = fopen(input, "rb");
|
||||
if(fp) {
|
||||
FILE* fpo = NULL;
|
||||
fpo = fopen(output, "wb");
|
||||
if(fpo) {
|
||||
char* bufi = (char*)malloc(B14BUFSIZ/8*8 + 2); //+2避免漏检结束偏移标志
|
||||
if(bufi) {
|
||||
int cnt = 0;
|
||||
int end = 0;
|
||||
rm_head(fp);
|
||||
while((cnt = fread(bufi, sizeof(char), B14BUFSIZ/8*8, fp))) {
|
||||
if((end = is_next_end(fp))) {
|
||||
bufi[cnt++] = '=';
|
||||
bufi[cnt++] = end;
|
||||
}
|
||||
LENDAT* ld = decode(bufi, cnt);
|
||||
if(fwrite(ld->data, ld->len, 1, fpo) <= 0) {
|
||||
puts("Write file error!");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
free(ld);
|
||||
}
|
||||
free(bufi);
|
||||
} else puts("Allocate input buffer error!");
|
||||
fclose(fpo);
|
||||
} else puts("Open output file error!");
|
||||
fclose(fp);
|
||||
} else puts("Open input file error!");
|
||||
}
|
||||
|
||||
unsigned long get_start_ms() {
|
||||
struct timespec ts;
|
||||
clock_gettime(CLOCK_MONOTONIC, &ts);
|
||||
return (ts.tv_sec * 1000 + ts.tv_nsec / 1000000);
|
||||
}
|
||||
|
||||
#define CHOICE argv[1][1]
|
||||
int main(int argc, char** argv) {
|
||||
if(argc == 4) {
|
||||
unsigned long t = get_start_ms();
|
||||
switch(CHOICE){
|
||||
case 'e': encode_file(argv[2], argv[3]); break;
|
||||
case 'd': decode_file(argv[2], argv[3]); break;
|
||||
default: break;
|
||||
}
|
||||
printf("spend time: %lums\n", get_start_ms() - t);
|
||||
} else {
|
||||
fputs("Usage: -[e|d] <inputfile> <outputfile>\n", stderr);
|
||||
fputs("\t-e encode\n", stderr);
|
||||
fputs("\t-d decode\n", stderr);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
12
base16384.h
Normal file
12
base16384.h
Normal file
@@ -0,0 +1,12 @@
|
||||
#ifndef CPUBIT32
|
||||
#ifndef CPUBIT64
|
||||
#define CPUBIT32
|
||||
#endif
|
||||
#endif
|
||||
#ifdef CPUBIT32
|
||||
#include "./32/base1432le.h"
|
||||
#endif
|
||||
#ifdef CPUBIT64
|
||||
#include "./64/base1464le.h"
|
||||
#endif
|
||||
|
||||
Reference in New Issue
Block a user