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C/C++生成unicode范围的字符
看到有人问怎么生成unicode范围的字符,网上没有找到相关在线转换的网站,自己实现的一个也不难。
思路:
1、如果会上位机如QT,那会很简单,直接QString str; str.append( QChar(unicode) ),最后直接显示字符串即可;
2、纯C/C++代码生成,最简单就是使用uncode转成utf8字符串,再写文件就完成了。
附上纯C/C++的代码和运行exe。
- #include <iostream>
- #include <stdio.h>
- #include <stdint.h>
- #include <stdlib.h>
- #include <string.h>
- using namespace std;
- //unicode转utf8
- int enc_unicode_to_utf8_one(unsigned long unic, unsigned char *pOutput)
- {
- //assert(pOutput != NULL);
- //assert(outSize >= 6);
- if ( unic <= 0x0000007F )
- {
- // * U-00000000 - U-0000007F: 0xxxxxxx
- *pOutput = (unic & 0x7F);
- return 1;
- }
- else if ( unic >= 0x00000080 && unic <= 0x000007FF )
- {
- // * U-00000080 - U-000007FF: 110xxxxx 10xxxxxx
- *(pOutput+1) = (unic & 0x3F) | 0x80;
- *pOutput = ((unic >> 6) & 0x1F) | 0xC0;
- return 2;
- }
- else if ( unic >= 0x00000800 && unic <= 0x0000FFFF )
- {
- // * U-00000800 - U-0000FFFF: 1110xxxx 10xxxxxx 10xxxxxx
- *(pOutput+2) = (unic & 0x3F) | 0x80;
- *(pOutput+1) = ((unic >> 6) & 0x3F) | 0x80;
- *pOutput = ((unic >> 12) & 0x0F) | 0xE0;
- return 3;
- }
- else if ( unic >= 0x00010000 && unic <= 0x001FFFFF )
- {
- // * U-00010000 - U-001FFFFF: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
- *(pOutput+3) = (unic & 0x3F) | 0x80;
- *(pOutput+2) = ((unic >> 6) & 0x3F) | 0x80;
- *(pOutput+1) = ((unic >> 12) & 0x3F) | 0x80;
- *pOutput = ((unic >> 18) & 0x07) | 0xF0;
- return 4;
- }
- else if ( unic >= 0x00200000 && unic <= 0x03FFFFFF )
- {
- // * U-00200000 - U-03FFFFFF: 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
- *(pOutput+4) = (unic & 0x3F) | 0x80;
- *(pOutput+3) = ((unic >> 6) & 0x3F) | 0x80;
- *(pOutput+2) = ((unic >> 12) & 0x3F) | 0x80;
- *(pOutput+1) = ((unic >> 18) & 0x3F) | 0x80;
- *pOutput = ((unic >> 24) & 0x03) | 0xF8;
- return 5;
- }
- else if ( unic >= 0x04000000 && unic <= 0x7FFFFFFF )
- {
- // * U-04000000 - U-7FFFFFFF: 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
- *(pOutput+5) = (unic & 0x3F) | 0x80;
- *(pOutput+4) = ((unic >> 6) & 0x3F) | 0x80;
- *(pOutput+3) = ((unic >> 12) & 0x3F) | 0x80;
- *(pOutput+2) = ((unic >> 18) & 0x3F) | 0x80;
- *(pOutput+1) = ((unic >> 24) & 0x3F) | 0x80;
- *pOutput = ((unic >> 30) & 0x01) | 0xFC;
- return 6;
- }
- return 0;
- }
- int main(void)
- {
- uint16_t unicode_min;//unicode最小值
- uint16_t unicode_max;//unicode最大值
- //下面获取输入与输出
- printf("input unicode min (like:4f60):");
- cin >> hex >> unicode_min ;
- printf("input unicode max (like:4f61):");
- cin >> hex >> unicode_max ;
- int str_len = unicode_max-unicode_min+1;//计算字符串
- int mem_len = str_len*6;//所需最大内存
- uint8_t *mem = (uint8_t *)malloc(mem_len);
- memset(mem, 0, mem_len);
- uint8_t *p = (uint8_t *)mem;
- int string_bytes = 0;//统计最大字节数
- int len;//每个unicode转为utf8所占的字节数
- for (uint16_t unicode = unicode_min; unicode <= unicode_max; ++unicode) {
- len = enc_unicode_to_utf8_one(unicode, p);
- p += len;
- string_bytes += len;
- }
- char file_name[64];
- sprintf(file_name, "0x%04x-0x%04x.txt", unicode_min, unicode_max);//文件名
- FILE* file = fopen(file_name,"w"); //打开文件
- fwrite(mem, 1, string_bytes, file); //写入操作
- fclose(file);//关闭文件
- free(mem);//最后释放内存
- system("pause");
- return 0;
- }
复制代码
生成unicode范围的字符.zip
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