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