GIF文件转换为头文件工具

• 目的：

  GIF文件转为头文件

• 举例：

  用UE打开GIF文件，如下图所示：
  
  
  图1 test.gif文件
  
  将上面文件内容转化为头文件，放到一个数组里面，内容如下：
  
  
  图2 test.h文件

• 思路：

  从上面可知，将二进制文件转换为文本文件，十六进制 47  转为 0x47，其他类推。

• 代码：
  

  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  static char pre_compiler_str_begin[] = "#ifdef PIP_PNG_GIF";
  static char pre_compiler_str_end[] = "#endif";
  static char const_char[] = "const char ";
  static char sign_begin[] = "[] = {";
  static char sign_end[] = "};";
  
  int match_file(unsigned char *buf, int file_size, char *src_file_name)
  {
  	unsigned char *p_start = NULL, *p_end = NULL;
  	char *head_data = NULL;
  	char str[64], filename[256], *p;
  	int i,ret = 0;
  
  	if((buf == NULL) || (src_file_name==NULL))
  	{
  		return -1;
  	}
  
  	p_end = buf;
  
  	if ((strlen(src_file_name) > 4)
  		&& (strcmp(src_file_name + strlen(src_file_name) - 4, ".gif") == 0))
  	{
  		strncpy(filename, src_file_name, strlen(src_file_name) - 4);
  		strcpy(filename + strlen(src_file_name) - 4, ".h");
  	}
  	else
  	{
  		sprintf(filename, "%s.h", src_file_name);
  	}
  
  	do
  	{
  		FILE *head_file = NULL;
  		head_file = fopen(filename, "w");
  		if (head_file == NULL)
  		{
  			ret = -1;
  			fprintf(stderr,"[%s] Open file %s error!\n", src_file_name, filename);
  			break;
  		}
  		
  		// write str:
  		//		#ifdef PIP_PNG_GIF
  		//		const char test0_gif[] = {
  		fwrite(pre_compiler_str_begin, 1, strlen(pre_compiler_str_begin), head_file);
  		fputc('\n',head_file);
  
  		fwrite(const_char, 1, strlen(const_char), head_file);
  		p = strrchr(filename, '\\')+1;
  		fwrite(p, 1, strlen(p)-2, head_file);
  		fwrite(sign_begin, 1, strlen(sign_begin), head_file);
  		fputc('\n',head_file);
  
  		// write data
  		for(i = 0; i < file_size; i++)
  		{
  			memset(str, 0, sizeof(str));
  			sprintf(str, "%s%0.2x%c", "0x", buf[i], ',');
  			fwrite(str, 1, strlen(str), head_file);
  			if((i == file_size - 1) || (i % 16 == 15))
  			{
  				fputc('\n',head_file);
  			}
  		}
  
  		fwrite(sign_end, 1, strlen(sign_end), head_file);
  		fputc('\n',head_file);
  
  		fwrite(pre_compiler_str_end, 1, strlen(pre_compiler_str_end), head_file);
  		fputc('\n',head_file);
  
  		fclose(head_file);
  	} while (0);
  
  	return ret;
  }
  
  int main(int argc, char *argv[])
  {
  	FILE *input = NULL;
  	char *file_name = NULL;//"test.h";
  	unsigned char *bmp_data = NULL;
  	int i;
  	int file_size = 0;
  
  	if (argc <= 1)
  	{
  		printf("Please assign input files!\n");
  		return -1;
  	}
  
  	for (i=1; i<argc; i++)
  	{
  		file_name = argv[i];
  
  		input = fopen(file_name, "rb");
  		if (!input)
  		{
  			fprintf(stderr, "[%s] Cannot open file!\n",file_name);
  			continue;
  		}
  		fseek(input, 0, SEEK_END);
  		file_size = ftell(input);
  		bmp_data = (unsigned char *)malloc(file_size + 1);
  		fseek(input, 0, SEEK_SET);
  		fread(bmp_data, 1, file_size, input);
  		bmp_data[file_size] = '0';
  
  		if(match_file(bmp_data, file_size, file_name) == 0)
  		{
  			fprintf(stdout, "[%s]\tOK\n",file_name);
  		}
  		else
  		{
  			fprintf(stdout, "[%s] Failed!\n",file_name);
  		}
  	}
  
  	return 0;
  
  }