/* src/client/command_db.c */
+#define _POSIX_C_SOURCE 200809L /* strdup() */
#include "command_db.h"
#include <stddef.h> /* NULL */
-#include <stdint.h> /* uint8_t, uint32_t */
-#include <stdio.h> /* FILE, sprintf() */
+#include <stdint.h> /* uint8_t */
#include <stdlib.h> /* free() */
-#include <string.h> /* memcpy(), strlen(), strtok(), strcmp() */
-#include "../common/readwrite.h" /* try_fopen(), try_fclose(), try_fgets()
- * textfile_sizes()
- */
-#include "../common/rexit.h" /* for exit_err() */
+#include <string.h> /* memset(), strcmp(), strdup() */
+#include "../common/parse_file.h" /* EDIT_STARTED, parse_file(), set_val(),
+ * token_from_line(), err_line(),
+ * finalize_by_readyflag()
+ */
#include "../common/try_malloc.h" /* try_malloc() */
-#include "cleanup.h" /* set_cleanup_flag() */
-#include "misc.h" /* array_append() */
+#include "array_append.h" /* array_append() */
#include "world.h" /* global world */
+#include "cleanup.h" /* set_cleanup_flag() */
-/* Helpers to init_command_db(). */
-static uint8_t copy_tokenized_string(char * line, char ** ch_ptr, char * delim);
-static char * init_command_db_err(char * line_copy, uint8_t line_number);
+/* Flags for defining state of command DB config file entries. */
+enum cmd_flag
+{
+ DESC_SET = 0x02,
+ SERVERCMD_SET = 0x04,
+ SERVERARG_SET = 0x08,
+ READY_CMD = DESC_SET
+};
-static uint8_t copy_tokenized_string(char * line, char ** ch_ptr, char * delim)
-{
- char * f_name = "copy_tokenized_string()";
- char * dsc_ptr = strtok(line, delim);
- if (!dsc_ptr)
- {
- return 1;
- }
- * ch_ptr = try_malloc(strlen(dsc_ptr) + 1, f_name);
- memcpy(* ch_ptr, dsc_ptr, strlen(dsc_ptr) + 1);
- return 0;
-}
+
+/* Get tokens from "context" and, by their order (in the individual context and
+ * in subsequent calls of this function), interpret them as data to write into
+ * the CommandDB.
+ *
+ * Individual CommandDB entries are put together line by line before being
+ * written. Writing happens after all necessary members of an entry have been
+ * assembled, and when additionally a) a new entry is started by a
+ * context->token0 of "COMMAND"; or b) a NULL context->token0 is passed.
+ */
+static void tokens_into_entries(char * token0, char * token1);
-static char * init_command_db_err(char * line_copy, uint8_t line_number)
+static void tokens_into_entries(char * token0, char * token1)
{
- char * f_name = "init_command_db_err";
- char * err_start = "Failed reading command config file at ";
- char * err_middle = " due to malformed line ";
- line_copy[strlen(line_copy) - 1] = '\0';
- char * err = try_malloc(strlen(err_start) + strlen(world.path_commands) +
- strlen(err_middle) + 3 + 2 + strlen(line_copy) + 1,
- f_name);
- sprintf(err, "%s%s%s%d: %s", err_start, world.path_commands, err_middle,
- line_number, line_copy);
- return err;
+ char * f_name = "tokens_into_entries()";
+ char * str_cmd = "COMMAND";
+ static uint8_t cmd_flags = READY_CMD;
+ static struct Command * cmd = NULL;
+ if (!token0 || !strcmp(token0, str_cmd))
+ {
+ finalize_by_readyflag(&cmd_flags, READY_CMD);
+ if (cmd)
+ {
+ array_append(world.commandDB.n, sizeof(struct Command),
+ (void *) cmd, (void **) &world.commandDB.cmds);
+ world.commandDB.n++;
+ free(cmd);
+ cmd = NULL;
+ }
+ }
+ err_line(token0 && NULL != token_from_line(NULL), "Too many values.");
+ if (token0 && !strcmp(token0, str_cmd))
+ {
+ char * err_uniq = "Declaration of ID already used.";
+ cmd_flags = EDIT_STARTED;
+ cmd = try_malloc(sizeof(struct Command), f_name);
+ memset(cmd, 0, sizeof(struct Command));
+ cmd->dsc_short = strdup(token1);
+ err_line(NULL != get_command(cmd->dsc_short), err_uniq);
+ }
+ else if ( token0
+ && !( set_val(token0, token1, "DESCRIPTION", &cmd_flags,
+ DESC_SET, 's', (char *) &cmd->dsc_long)
+ || set_val(token0, token1, "SERVER_COMMAND", &cmd_flags,
+ SERVERCMD_SET, 's', (char *) &cmd->server_msg)
+ || set_val(token0, token1, "SERVER_ARGUMENT", &cmd_flags,
+ SERVERARG_SET, 'c', (char *) &cmd->arg)))
+ {
+ err_line(1, "Unknown arguemnt.");
+ }
}
{
if (0 == strcmp(dsc_short, cmd_ptr->dsc_short))
{
- break;
+ return cmd_ptr;
}
cmd_ptr = &cmd_ptr[1];
i++;
}
- char * err_start = "get_command_data() failed on request for: ";
- char err[strlen(err_start) + strlen(dsc_short) + 1];
- sprintf(err, "%s%s", err_start, dsc_short);
- exit_err(i == world.commandDB.n, err);
- return cmd_ptr;
+ return NULL;
}
extern void init_command_db()
{
- char * f_name = "init_command_db()";
- FILE * file = try_fopen(world.path_commands, "r", f_name);
- uint32_t lines;
- uint32_t linemax = textfile_sizes(file, &lines);
- char line[linemax + 1];
- uint8_t i = 0;
- char * delim = " ";
- while (try_fgets(line, linemax + 1, file, f_name))
- {
- if ('\n' == line[0] || 0 == line[0])
- {
- break;
- }
- char line_copy[strlen(line) + 1];
- sprintf(line_copy, "%s", line);
- struct Command cmd;
- char * arg_string;
- exit_err(( copy_tokenized_string(line, &cmd.dsc_short, delim)
- || copy_tokenized_string(NULL, &cmd.server_msg, delim)
- || NULL == (arg_string = strtok(NULL, delim))
- || strlen(arg_string) > 1
- || copy_tokenized_string(NULL, &cmd.dsc_long, "\n")),
- init_command_db_err(line_copy, i + 1));
- cmd.arg = arg_string[0];
- if (!strcmp("0", cmd.server_msg))
- { /* A .server_msg == NULL helps control.c's */
- free(cmd.server_msg); /* try_key() and try_server_command() to */
- cmd.server_msg = NULL; /* differentiate server commands from */
- } /* non-server commands. */
- array_append(i, sizeof(struct Command), (void *) &cmd,
- (void **) &world.commandDB.cmds);
- i++;
- }
- try_fclose(file, f_name);
- world.commandDB.n = i;
+ parse_file(world.path_commands, tokens_into_entries);
set_cleanup_flag(CLEANUP_COMMANDS);
}
projects / plomrogue / blobdiff