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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(),
  13                                    * parse_flagval()
  14                                    */
  15 #include "array_append.h" /* array_append() */
  16 #include "world.h" /* global world */
  17 #include "cleanup.h" /* set_cleanup_flag() */
  18
  19
  20
  21 /* Flags for defining state of command DB config file entries. */
  22 enum cmd_flag
  23 {
  24     DESC_SET      = 0x02,
  25     SERVERCMD_SET = 0x04,
  26     SERVERARG_SET = 0x08,
  27     READY_CMD = DESC_SET
  28 };
  29
  30
  31
  32 /* Interpret "token0" and "token1" as data to write into the CommandDB.
  33  *
  34  * Individual CommandDB entries are put together line by line before being
  35  * written. Writing happens after all necessary members of an entry have been
  36  * assembled, and when additionally a) a new entry is started by a "token0" of
  37  * "COMMAND"; or b) of "token0" of NULL is passed.
  38  */
  39 static void tokens_into_entries(char * token0, char * token1);
  40
  41
  42
  43 static void tokens_into_entries(char * token0, char * token1)
  44 {
  45     char * str_cmd = "COMMAND";
  46     static uint8_t cmd_flags = READY_CMD;
  47     static struct Command * cmd = NULL;
  48     if (!token0 || !strcmp(token0, str_cmd))
  49     {
  50         parse_and_reduce_to_readyflag(&cmd_flags, READY_CMD);
  51         if (cmd)
  52         {
  53             array_append(world.commandDB.n, sizeof(struct Command),
  54                          (void *) cmd, (void **) &world.commandDB.cmds);
  55             world.commandDB.n++;
  56             free(cmd);
  57             cmd = NULL;
  58         }
  59     }
  60     if (token0)
  61     {
  62         parsetest_too_many_values();
  63         if      (!strcmp(token0, str_cmd))
  64         {
  65             cmd = (struct Command *) parse_init_entry(&cmd_flags,
  66                                                       sizeof(struct Command));
  67             cmd->dsc_short = strdup(token1);
  68             parse_id_uniq(NULL != get_command(cmd->dsc_short));
  69         }
  70         else if (!(   parse_flagval(token0, token1, "DESCRIPTION", &cmd_flags,
  71                                     DESC_SET, 's', (char *) &cmd->dsc_long)
  72                    || parse_flagval(token0, token1,"SERVER_COMMAND", &cmd_flags,
  73                                     SERVERCMD_SET, 's',(char *)&cmd->server_msg)
  74                    || parse_flagval(token0, token1,"SERVER_ARGUMENT",&cmd_flags,
  75                                     SERVERARG_SET, 'c', (char *) &cmd->arg)))
  76         {
  77             parse_unknown_arg();
  78         }
  79     }
  80 }
  81
  82
  83
  84 extern struct Command * get_command(char * dsc_short)
  85 {
  86     struct Command * cmd_ptr = world.commandDB.cmds;
  87     uint8_t i = 0;
  88     while (i < world.commandDB.n)
  89     {
  90         if (0 == strcmp(dsc_short, cmd_ptr->dsc_short))
  91         {
  92             return cmd_ptr;
  93         }
  94         cmd_ptr = &cmd_ptr[1];
  95         i++;
  96     }
  97     return NULL;
  98 }
  99
 100
 101
 102 extern void init_command_db()
 103 {
 104     parse_file(world.path_commands, tokens_into_entries);
 105     set_cleanup_flag(CLEANUP_COMMANDS);
 106 }
 107
 108
 109
 110 extern void free_command_db()
 111 {
 112     uint8_t i = 0;
 113     while (i < world.commandDB.n)
 114     {
 115         free(world.commandDB.cmds[i].dsc_short);
 116         free(world.commandDB.cmds[i].dsc_long);
 117         free(world.commandDB.cmds[i].server_msg);
 118         i++;
 119     }
 120     free(world.commandDB.cmds);
 121 }