shcmdparse.h 文件参考

浏览源代码.

结构体
struct	CmdParsed

函数
unsigned int	OsCmdParse (char *cmdStr, CmdParsed *cmdParsed)
	解析cmd命令,将关键字,参数分离出来 更多...
char *	OsCmdParseStrdup (const char *str)
unsigned int	OsCmdParseOneToken (CmdParsed *cmdParsed, unsigned int index, const char *token)
	解析出一个参数 更多...
unsigned int	OsCmdTokenSplit (char *cmdStr, char split, CmdParsed *cmdParsed)
	将shell命令按 ' ' 分开处理 更多...

函数说明

OsCmdParse()

unsigned int OsCmdParse	(	char *	cmdStr,
		CmdParsed *	cmdParsed
	)

解析cmd命令,将关键字,参数分离出来

在文件 shcmdparse.c 第 147 行定义.

{
    if ((cmdStr == NULL) || (cmdParsed == NULL) || (strlen(cmdStr) == 0)) {
        return (unsigned int)SH_ERROR;
    }
    return OsCmdTokenSplit(cmdStr, ' ', cmdParsed);
}

函数调用图:

这是这个函数的调用关系图:

OsCmdParseOneToken()

unsigned int OsCmdParseOneToken	(	CmdParsed *	cmdParsed,
		unsigned int	index,
		const char *	token
	)

解析出一个参数

在文件 shcmdparse.c 第 73 行定义.

{
    unsigned int ret = SH_OK;
    unsigned int tempLen;
 
    if (cmdParsed == NULL) {
        return (unsigned int)SH_ERROR;
    }
 
    if (index == 0) {
        if (cmdParsed->cmdType != CMD_TYPE_STD) {
            return ret;
        }
    }
 
    if ((token != NULL) && (cmdParsed->paramCnt < CMD_MAX_PARAS)) {
        tempLen = cmdParsed->paramCnt;
        ret = OsCmdParseParaGet(&(cmdParsed->paramArray[tempLen]), token);
        if (ret != SH_OK) {
            return ret;
        }
        cmdParsed->paramCnt++;
    }
    return ret;
}

函数调用图:

OsCmdParseStrdup()

char * OsCmdParseStrdup

(

const char *

str

)

在文件 shcmdparse.c 第 39 行定义.

{
    char *tempStr = NULL;
    char *newStr = NULL;
 
    newStr = (char *)malloc(strlen(str) + 1);
    if (newStr == NULL) {
        return NULL;
    }
 
    tempStr = newStr;
    for (; *str != '\0'; str++) {
        if ((*str == '\"') || (*str == '\'')) {
            continue;
        }
        *newStr = *str;
        newStr++;
    }
    *newStr = '\0';
    return tempStr;
}

函数调用图:

OsCmdTokenSplit()

unsigned int OsCmdTokenSplit	(	char *	cmdStr,
		char	split,
		CmdParsed *	cmdParsed
	)

将shell命令按 ' ' 分开处理

在文件 shcmdparse.c 第 99 行定义.

{
    enum {
        STAT_INIT,
        STAT_TOKEN_IN,
        STAT_TOKEN_OUT
    } state = STAT_INIT;
    unsigned int count = 0;
    char *p = NULL;
    char *token = cmdStr;
    unsigned int ret = SH_OK;
    bool quotes = FALSE;
 
    if (cmdStr == NULL) {
        return (unsigned int)SH_ERROR;
    }
 
    for (p = cmdStr; (*p != '\0') && (ret == SH_OK); p++) {
        if (*p == '\"') {
            SWITCH_QUOTES_STATUS(quotes);
        }
        switch (state) {
            case STAT_INIT:
            case STAT_TOKEN_IN:
                if ((*p == split) && QUOTES_STATUS_CLOSE(quotes)) {
                    *p = '\0';
                    ret = OsCmdParseOneToken(cmdParsed, count++, token);
                    state = STAT_TOKEN_OUT;
                }
                break;
            case STAT_TOKEN_OUT:
                if (*p != split) {
                    token = p;
                    state = STAT_TOKEN_IN;
                }
                break;
            default:
                break;
        }
    }
 
    if (((ret == SH_OK) && (state == STAT_TOKEN_IN)) || (state == STAT_INIT)) {
        ret = OsCmdParseOneToken(cmdParsed, count, token);
    }
 
    return ret;
}

函数调用图:

这是这个函数的调用关系图: