添加lzw压缩算法

huffman/hello.c

@@ -0,0 +1,104 @@
+
+#include "stdio.h"
+#include "string.h"
+// #include "coder_lib.h"
+// #include "huffman.h"
+#include "huffman_.h"
+#include <stdlib.h>
+
+
+// 验证管壳码算法
+// int main(int num,char *str[]){
+
+
+//     uint8_t d_[12]={0};
+//     char uid[20]={0};
+
+
+//     coder_shell_to_uid("2023","5830628A00004",uid);
+//     printf("uid=%s\r\n",uid);
+//     coder_uid_to_save(uid,d_);
+
+//     printf("slave:, uid_pw=%02X %02X %02X %02X %02X %02X %02X %02X "
+//       "%02X %02X %02X %02X ",d_[0],d_[1],d_[2],d_[3],d_[4],d_[5],d_[6],d_[7],
+//       d_[8],d_[9],d_[10],d_[11]);
+
+
+//     return 0;
+// }
+
+
+
+// 验证huffman算法
+
+// int main(int argc, char *argv[])
+// {
+//   uint8_t str_in[]="2023 5830628A000005830628A000015830628A000025830628A000035830628A000045830628A000055830628A000065830628A000075830628A000085830628A00009";
+//   array_def *a=arr_creat();
+//   arr_appends(a,str_in,strlen(str_in));
+//   array_def *out=hm_encode(a);
+//   printf("endode:%s\n",arr_string(out));
+//   array_def *de=hm_decode(out);
+//   printf("decde:%s\n",arr_data(de));
+//   return 0;
+// }
+
+
+
+
+long calc_file_size(FILE *stream)
+{
+	long file_size = -1;
+	long cur_offset = ftell(stream);	// 获取当前偏移位置
+	if (cur_offset == -1) {
+		printf("ftell failed :%s\n", strerror(errno));
+		return -1;
+	}
+	if (fseek(stream, 0, SEEK_END) != 0) {	// 移动文件指针到文件末尾
+		printf("fseek failed: %s\n", strerror(errno));
+		return -1;
+	}
+	file_size = ftell(stream);	// 获取此时偏移值，即文件大小
+	if (file_size == -1) {
+		printf("ftell failed :%s\n", strerror(errno));
+	}
+	if (fseek(stream, cur_offset, SEEK_SET) != 0) {	// 将文件指针恢复初始位置
+		printf("fseek failed: %s\n", strerror(errno));
+		return -1;
+	}
+	return file_size;
+}
+
+
+
+int encode_file(const char *filename)
+{
+  FILE *f=fopen(filename, "rb");
+  int file_size=calc_file_size(f);
+  uint8_t *file_data=calloc(file_size+1,sizeof(uint8_t));
+  uint8_t *encode_data=0;
+  int encode_size;
+  fread(file_data,1,file_size,f);
+  hm_encode(file_data,file_size,&encode_data,&encode_size);
+  free(file_data);
+  free(encode_data);
+  fclose(f);
+}
+
+
+
+
+
+int main(int argc, char *argv[])
+{
+  encode_file(argv[1]);
+  // const uint8_t file_data[]="2023 5830628A000005830628A000015830628A000025830628A000035830628A000045830628A000055830628A000065830628A000075830628A000085830628A00009";
+  // uint8_t *encode_data=0;
+  // int encode_size;
+  // hm_encode(file_data,sizeof(file_data),&encode_data,&encode_size);
+  return 0;
+}
+
+
+
+