轮子：CmdChannel的CmdParser
CmdParser是用于分解和分析命令输入的，说是一个Parser，实际很简单，就是将命令分解，然后将分解出来的命令字串跟已经'regist'的命令字串进行一一的比较，找到就返回注册命令的指针，并传入相应的参数（这部分代码在TelnetServer中）；找不到就执行默认的UnknownCmdProc。
#ifndef __CCCMD_H__
#define
__CCCMD_H__
#include
"
CCDataType.h
"
extern
int
cc_TelnetServer_ClientWriteText(SOCKET s,
const
char
*
text);
extern
int
cc_CmdParser_Parser(
struct
_cc_telnet_clientdata
*
client,
struct
_cc_cmddata
**
cmd,
int
*
argc,
char
argv[][CC_SIZE_CMD]);
extern
int
cc_CmdParser_UnknownCmd(
struct
_cc_telnet_clientdata
*
client,
const
char
*
cmd);
extern
int
cc_RegCmd(
const
char
*
cmd,
const
char
*
help,
const
_cc_cmdcallback callback);
extern
int
cc_RegDefaultCmds();
extern
int
cc_CmdOutput(
struct
_cc_telnet_clientdata
*
client,
const
char
*
fmt, 
);
extern
int
cc_cmd_exit(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD]);
extern
int
cc_cmd_help(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD]);
extern
int
cc_cmd_list(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD]);
extern
int
cc_cmd_version(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD]);
#endif
#include
<
stdarg.h
>
#include
"
CCCmd.h
"
int
cc_CmdParser_Search(
const
char
*
str,
struct
_cc_cmddata
**
cmd)
{
struct _cc_cmddata* c = cc_Global.cmd.cmd; while(c != NULL)
{ if(strcmp(c->cmd, str) == 0) { (*cmd) = c; return 0;
} c = c->next; } return -1;
}
int
cc_CmdParser_Parser(
struct
_cc_telnet_clientdata
*
client,
struct
_cc_cmddata
**
cmd,
int
*
argc,
char
argv[][CC_SIZE_CMD])
{ char str[CC_SIZE_CMD]; char* token = NULL; char* sep = ","; memset(str, 0, sizeof(str)); strncpy(str, client->buf, client->recv - 2); token = strtok(str, sep); if(token == NULL) return -1; if(cc_CmdParser_Search(token, cmd) != 0) { cc_CmdParser_UnknownCmd(client, token); return -1; } (*argc) = 0; token = strtok(NULL, sep); while(token != NULL) { strncpy(&argv[(*argc)], token, CC_SIZE_CMD); ++ (*argc); token = strtok(NULL, sep); } return 0;}
int
cc_CmdParser_UnknownCmd(
struct
_cc_telnet_clientdata
*
client,
const
char
*
cmd)
{ cc_CmdOutput(client, "Unknown command - %s\r\n", cmd); return 0; }
int
cc_RegDefaultCmds()
{ cc_RegCmd(".version", "display version info.", cc_cmd_version); cc_RegCmd(".exit", "exit the connection.", cc_cmd_exit); cc_RegCmd(".help", "display help info of command.", cc_cmd_help); cc_RegCmd(".list", "list all connections.", cc_cmd_list); return 0;}
int
cc_RegCmd(
const
char
*
cmd,
const
char
*
help,
const
_cc_cmdcallback callback)
{ struct _cc_cmddata* tmp = NULL; struct _cc_cmddata* c = (struct _cc_cmddata*)malloc(sizeof(struct _cc_cmddata)); c->callback = callback; strncpy(c->cmd, cmd, sizeof(c->cmd)); strncpy(c->help, help, sizeof(c->help)); c->next = NULL; if(cc_Global.cmd.cmd == NULL) { cc_Global.cmd.cmd = c; } else { tmp = cc_Global.cmd.cmd; while(tmp->next != NULL) { tmp = tmp->next; } tmp->next = c; } return 0;}
int
cc_CmdOutput(
struct
_cc_telnet_clientdata
*
client,
const
char
*
fmt, )
{ char buf[CC_SIZE_CMD]; int len = -1; va_list args; memset(buf, 0, sizeof(buf)); va_start(args, fmt); len = vsprintf(buf, fmt, args); va_end(args); return cc_TelnetServer_ClientWrite(client->sock, buf, len);// len = sprintf(buf, fmt, __VA_ARGS__);}
/**/
/* ----------------------------- */
int
cc_cmd_exit(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD])
{ cc_CmdOutput(client, "bye.\r\n"); return -1; }
int
cc_cmd_help(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD])
{ struct _cc_cmddata* tmp = cc_Global.cmd.cmd; while(tmp != NULL) { if(argc > 0) { if(strncmp(tmp->cmd, argv[0], sizeof(tmp->cmd)) == 0) { cc_CmdOutput(client, "%s : %s\r\n", tmp->cmd, tmp->help); return 0; } } else { cc_CmdOutput(client, "%s : %s\r\n", tmp->cmd, tmp->help); } tmp = tmp->next; } return 0;}
int
cc_cmd_list(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD])
{ struct _cc_telnet_clientdata* tmp = cc_Global.telnet.client; while(tmp != NULL) { cc_CmdOutput(client, "conn %d : %s:%d in %s", tmp->index, tmp->ip, tmp->port, asctime(gmtime(&tmp->updated))); tmp = tmp->next; } cc_CmdOutput(client, "\r\n"); return 0;}
int
cc_cmd_version(
struct
_cc_telnet_clientdata
*
client,
int
argc,
const
char
(
*
argv)[CC_SIZE_CMD])
{ cc_CmdOutput(client, "CmdChannel library v0.0.0.2 by Jie.([email protected]).\r\n"); return 0;}