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   1 /* src/client/command_db.c */
   2
   3 #define _POSIX_C_SOURCE 200809L /* strdup() */
   4 #include "command_db.h"
   5 #include <stddef.h> /* NULL */
   6 #include <stdint.h> /* uint8_t */
   7 #include <stdlib.h> /* free() */
   8 #include <string.h> /* strcmp(), strdup() */
   9 #include "../common/parse_file.h" /* EDIT_STARTED,parse_init_entry(),
  10                                    * parse_id_uniq(), parse_unknown_arg(),
  11                                    * parsetest_too_many_values(), parse_file(),
  12                                    * parse_and_reduce_to_readyflag(),parse_val()
  13                                    */
  14 #include "array_append.h" /* array_append() */
  15 #include "world.h" /* global world */
  16 #include "cleanup.h" /* set_cleanup_flag() */
  17
  18
  19
  20 /* Flags for defining state of command DB config file entries. */
  21 enum cmd_flag
  22 {
  23     DESC_SET      = 0x02,
  24     SERVERCMD_SET = 0x04,
  25     SERVERARG_SET = 0x08,
  26     READY_CMD = DESC_SET
  27 };
  28
  29
  30
  31 /* Interpret "token0" and "token1" as data to write into the CommandDB.
  32  *
  33  * Individual CommandDB entries are put together line by line before being
  34  * written. Writing happens after all necessary members of an entry have been
  35  * assembled, and when additionally a) a new entry is started by a "token0" of
  36  * "COMMAND"; or b) of "token0" of NULL is passed.
  37  */
  38 static void tokens_into_entries(char * token0, char * token1);
  39
  40
  41
  42 static void tokens_into_entries(char * token0, char * token1)
  43 {
  44     char * str_cmd = "COMMAND";
  45     static uint8_t cmd_flags = READY_CMD;
  46     static struct Command * cmd = NULL;
  47     if (!token0 || !strcmp(token0, str_cmd))
  48     {
  49         parse_and_reduce_to_readyflag(&cmd_flags, READY_CMD);
  50         if (cmd)
  51         {
  52             array_append(world.commandDB.n, sizeof(struct Command),
  53                          (void *) cmd, (void **) &world.commandDB.cmds);
  54             world.commandDB.n++;
  55             free(cmd);
  56             cmd = NULL;
  57         }
  58     }
  59     if (token0)
  60     {
  61         parsetest_too_many_values();
  62         if      (!strcmp(token0, str_cmd))
  63         {
  64             cmd = (struct Command *) parse_init_entry(&cmd_flags,
  65                                                       sizeof(struct Command));
  66             cmd->dsc_short = strdup(token1);
  67             parse_id_uniq(NULL != get_command(cmd->dsc_short));
  68         }
  69         else if (!(   parse_val(token0, token1, "DESCRIPTION", &cmd_flags,
  70                                 DESC_SET, 's', (char *) &cmd->dsc_long)
  71                    || parse_val(token0, token1, "SERVER_COMMAND", &cmd_flags,
  72                                 SERVERCMD_SET, 's', (char *) &cmd->server_msg)
  73                    || parse_val(token0, token1, "SERVER_ARGUMENT", &cmd_flags,
  74                                 SERVERARG_SET, 'c', (char *) &cmd->arg)))
  75         {
  76             parse_unknown_arg();
  77         }
  78     }
  79 }
  80
  81
  82
  83 extern struct Command * get_command(char * dsc_short)
  84 {
  85     struct Command * cmd_ptr = world.commandDB.cmds;
  86     uint8_t i = 0;
  87     while (i < world.commandDB.n)
  88     {
  89         if (0 == strcmp(dsc_short, cmd_ptr->dsc_short))
  90         {
  91             return cmd_ptr;
  92         }
  93         cmd_ptr = &cmd_ptr[1];
  94         i++;
  95     }
  96     return NULL;
  97 }
  98
  99
 100
 101 extern void init_command_db()
 102 {
 103     parse_file(world.path_commands, tokens_into_entries);
 104     set_cleanup_flag(CLEANUP_COMMANDS);
 105 }
 106
 107
 108
 109 extern void free_command_db()
 110 {
 111     uint8_t i = 0;
 112     while (i < world.commandDB.n)
 113     {
 114         free(world.commandDB.cmds[i].dsc_short);
 115         free(world.commandDB.cmds[i].dsc_long);
 116         free(world.commandDB.cmds[i].server_msg);
 117         i++;
 118     }
 119     free(world.commandDB.cmds);
 120 }