plomlompom.com Git - plomrogue/blob - src/client/command_db.c

   1 /* src/client/command_db.c */
   2
   3 #include "command_db.h"
   4 #include <stddef.h> /* NULL */
   5 #include <stdint.h> /* uint8_t, uint32_t */
   6 #include <stdio.h> /* FILE */
   7 #include <stdlib.h> /* free() */
   8 #include <string.h> /* memcpy(), strlen(), strtok(), strcmp() */
   9 #include "../common/readwrite.h" /* try_fopen(), try_fclose(), try_fgets()
  10                                   * textfile_sizes()
  11                                   */
  12 #include "../common/rexit.h" /* for exit_err() */
  13 #include "../common/try_malloc.h" /* try_malloc() */
  14 #include "cleanup.h" /* set_cleanup_flag() */
  15 #include "world.h" /* global world */
  16
  17
  18
  19 /* Point "ch_ptr" to next strtok() string in "line" delimited by "delim".*/
  20 static void copy_tokenized_string(char * line, char ** ch_ptr, char * delim);
  21
  22
  23
  24 static void copy_tokenized_string(char * line, char ** ch_ptr, char * delim)
  25 {
  26     char * f_name = "copy_tokenized_string()";
  27     char * dsc_ptr = strtok(line, delim);
  28     * ch_ptr = try_malloc(strlen(dsc_ptr) + 1, f_name);
  29     memcpy(* ch_ptr, dsc_ptr, strlen(dsc_ptr) + 1);
  30 }
  31
  32
  33
  34 extern struct Command * get_command(char * dsc_short)
  35 {
  36     struct Command * cmd_ptr = world.commandDB.cmds;
  37     uint8_t i = 0;
  38     while (i < world.commandDB.n)
  39     {
  40         if (0 == strcmp(dsc_short, cmd_ptr->dsc_short))
  41         {
  42             break;
  43         }
  44         cmd_ptr = &cmd_ptr[1];
  45         i++;
  46     }
  47     char * err_start = "get_command_data() failed on request for: ";
  48     char err[strlen(err_start) + strlen(dsc_short) + 1];
  49     sprintf(err, "%s%s", err_start, dsc_short);
  50     exit_err(i == world.commandDB.n, err);
  51     return cmd_ptr;
  52 }
  53
  54
  55
  56 extern void init_command_db()
  57 {
  58     char * f_name = "init_command_db()";
  59     FILE * file = try_fopen(world.path_commands, "r", f_name);
  60     uint32_t lines;
  61     uint32_t linemax = textfile_sizes(file, &lines);
  62     char line[linemax + 1];
  63     world.commandDB.cmds = try_malloc(lines * sizeof(struct Command), f_name);
  64     uint8_t i = 0;
  65     char * delim = " ";
  66     while (try_fgets(line, linemax + 1, file, f_name))
  67     {
  68         if ('\n' == line[0] || 0 == line[0])
  69         {
  70             break;
  71         }
  72         copy_tokenized_string(line, &world.commandDB.cmds[i].dsc_short, delim);
  73         copy_tokenized_string(NULL, &world.commandDB.cmds[i].server_msg, delim);
  74         if (!strcmp("0", world.commandDB.cmds[i].server_msg))
  75         {                                             /*.server_msg==0 detects*/
  76             free(world.commandDB.cmds[i].server_msg); /* non-server commands  */
  77             world.commandDB.cmds[i].server_msg = NULL;/* in try_key() /       */
  78         }                                             /* try_server_command().*/
  79         char * arg_string = strtok(NULL, delim);
  80         world.commandDB.cmds[i].arg = arg_string[0];
  81         copy_tokenized_string(NULL, &world.commandDB.cmds[i].dsc_long, "\n");
  82         i++;
  83     }
  84     try_fclose(file, f_name);
  85     world.commandDB.n = lines;
  86     set_cleanup_flag(CLEANUP_COMMANDS);
  87 }
  88
  89
  90
  91 extern void free_command_db()
  92 {
  93     uint8_t i = 0;
  94     while (i < world.commandDB.n)
  95     {
  96         free(world.commandDB.cmds[i].dsc_short);
  97         free(world.commandDB.cmds[i].dsc_long);
  98         free(world.commandDB.cmds[i].server_msg);
  99         i++;
 100     }
 101     free(world.commandDB.cmds);
 102 }