Convert .ini configuration file to .xml file format

  1 /*
  2  * FILE: p670_convert.c
  3  * DATE: 20180125
  4  * ==============
  5 * DESCRIPTION: Convert .ini configuration file to .xml file
  6 * fgets, fputs, DEBUG(format, ...) debugging, strtok cuts strings,
  7  */
  8
  9 #include <stdio.h>
 10 #include <string.h>
 11
 12 #define DEBUG(format, ...) printf("FILE: "__FILE__", LINE: %d: "format"\n", __LINE__, ##__VA_ARGS__)
 13 #define BUFFSIZE 64
 14
 15 int main(int argc, char *argv[])
 16 {
 17         FILE *fp_src, *fp_dest;
 18         char buf[BUFFSIZE];
 19         char buf_out[BUFFSIZE];
 20         char head[16];
 21         char filename[16];
 22 int len;
 23
 24         if(argc != 2)
 25                 DEBUG("Usage: ./buld filename");
 26
 27 // Verify that the file extension is .ini configuration file    
 28 len = strlen (argv [1]);
 29         if(strcmp(argv[1]+len-3, "ini") != 0)
 30                 DEBUG("source file format error");
 31
 32 fp_src = fopen(argv[1], "r"); // fopen configuration file
 33
 34 // Change the extension of the .ini configuration file to .xml
 35         strcpy(filename, argv[1]);
 36         strcpy(&filename[len-3], "xml");
 37
 38 // fopen .xml file, create it if it does not exist
 39         fp_dest = fopen(filename, "w");
 40 // read each line sequentially
 41         while(fgets(buf, BUFFSIZE, fp_src) != NULL)
 42         {
 43 len = strlen(buf);
 44 buf[len-1] = '\0';
 45 // Configuration header
 46                 if(buf[0] == '#')
 47                         sprintf(buf_out, "<!-- %s -->\n", buf);
 48                 else if(buf[0] == '!')
 49                 {
 50                         sprintf(buf_out, "<%s>\n", buf+1);
 51 strcpy(head, buf+1); // make a copy for later output</head>
 52                 }
 53                 else if(buf[0] == '\0')
 54                         sprintf(buf_out, "</%s>\n\n", head);
 55                 else
 56 { // strtok cuts the string and returns the first address
 57                         char *p = strtok(buf, "=");
 58 // When strtok is called for the first time, the first address of the string needs to be passed in, and then NULL is passed in
 59                         p = strtok(NULL, "=");
 60                         sprintf(buf_out, "\t<%s>%s</%s>\n", buf, p, buf);
 61                 }
 62                 fputs(buf_out, fp_dest);        // fputs 输出
 63         }
 64 fclose(fp_src); // fclose closes the file stream
 65         fclose(fp_dest);
 66         return 0;
 67 }