gen_messages.c

   1 #include <stdint.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 static size_t split(char ***strs, char *s, const char *delim)
   7 {
   8         size_t i = 0;
   9         *strs = malloc((1+i) * sizeof(char *));
  10
  11         char *tok = strtok(s, delim);
  12         while (tok != NULL) {
  13                 *strs = realloc(*strs, (1+i) * sizeof(char *));
  14                 (*strs)[i++] = tok;
  15                 tok = strtok(NULL, delim);
  16         }
  17
  18         return i;
  19 }
  20
  21 int main(int argc, char **argv)
  22 {
  23         FILE *fp = fopen("messages.dnet", "r");
  24
  25         char data[1 << 16];
  26         memset(data, 0, sizeof data);
  27         fread(data, sizeof *data, sizeof data, fp);
  28
  29         fclose(fp);
  30         fp = fopen("messages.h", "w");
  31
  32         char **msgs;
  33         size_t msgs_len = split(&msgs, data, "\n");
  34
  35         char *msg = NULL;
  36         for (size_t i = 0; i < msgs_len; i++) {
  37                 if (msgs[i][0] != '\t') {
  38                         if (msg != NULL)
  39                                 fprintf(fp, "} %s;\n", msg);
  40
  41                         msg = msgs[i];
  42                         fprintf(fp, "typedef struct {\n");
  43                 } else {
  44                         char **tokens;
  45                         split(&tokens, msgs[i], " ");
  46
  47                         char type[10];
  48                         if (strcmp(tokens[0], "\ts8") == 0)
  49                                 strcpy(type, "int8_t ");
  50                         else if (strcmp(tokens[0], "\ts16") == 0)
  51                                 strcpy(type, "int16_t ");
  52                         else if (strcmp(tokens[0], "\ts32") == 0)
  53                                 strcpy(type, "int32_t ");
  54                         else if (strcmp(tokens[0], "\ts64") == 0)
  55                                 strcpy(type, "int64_t ");
  56                         else if (strcmp(tokens[0], "\tu8") == 0)
  57                                 strcpy(type, "uint8_t ");
  58                         else if (strcmp(tokens[0], "\tu16") == 0)
  59                                 strcpy(type, "uint16_t ");
  60                         else if (strcmp(tokens[0], "\tu32") == 0)
  61                                 strcpy(type, "uint32_t ");
  62                         else if (strcmp(tokens[0], "\tu64") == 0)
  63                                 strcpy(type, "uint64_t ");
  64
  65                         fprintf(fp, "\t%s%s;\n", type, tokens[1]);
  66                         free(tokens);
  67                 }
  68         }
  69
  70         fprintf(fp, "} %s;\n", msg);
  71
  72         free(msgs);
  73         fclose(fp);
  74 }