qianlima210210的专栏

在内存中压缩及解压缩 //引入头文件#import <zlib.h>//引入libz动态库NSString *str = @"zlib compress and uncompress test\nturingo@163.com\n2012-11-05\n";NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];Bytef *text = (Bytef*)[data bytes];uLong tlen = [data length];char* buf = NULL;uLong blen;/* 计算缓冲区大小，，并为其分配内存 */blen = compressBound(tlen); /* 压缩后的长度是不会超过blen的 */if((buf = (char*)malloc(sizeof(char) * blen)) == NULL){printf("no enough memory!\n");return -1;}/* 压缩 */if(compress((Bytef*)buf, &blen, (Bytef*)text, tlen) != Z_OK){printf("compress failed!\n");return -1;}/* 解压缩 */if(uncompress((Bytef*)text, &tlen, (Bytef*)buf, blen) != Z_OK){printf("uncompress failed!\n");return -1;}/* 打印结果，并释放内存 */printf("%s", text);if(buf != NULL){free(buf);buf = NULL;}

赶快上路吧，不要有一天我们在对方的葬礼上说，要是当时去了就好了。