l4arg/qarg.c


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#include <stdlib.h>
#include <string.h>
#include <l4arg.h>

/* 為什麼叫做 qarg 呢？因為這是用來解析很像 QEMU 命令列參數的參數 */

L4QARG* l4qarg_parse(const char* str){
    char** pargv = l4arg_toargv(str, ",", "\"\'", "\\");
    if(pargv == NULL){
        return NULL;
    }
    int i, allc;
    L4QARG* qargarr;
    char* pos;
    for(i=0; pargv[i]!=NULL; i++);
    allc = i + 1;
    qargarr = (L4QARG*) malloc(sizeof(L4QARG) * allc);
    if(qargarr == NULL){
        l4arg_toargv_free(pargv);
        return NULL;
    }
    for(i=0; pargv[i]!=NULL; i++){
        pos = strchr(pargv[i], '=');
        if(pos == NULL){
            qargarr[i].arg_name = pargv[i];
            qargarr[i].arg_value = NULL;
        }else{
            *pos = '\0';
            qargarr[i].arg_name = pargv[i];
            pos++;
            qargarr[i].arg_value = (char*) malloc(strlen(pos)+1);
            if(qargarr[i].arg_value == NULL){
                l4arg_toargv_free(pargv);
                return NULL;
            }
            strcpy(qargarr[i].arg_value, pos);
        }
    }
    free(pargv);
    qargarr[i].arg_name = NULL;
    qargarr[i].arg_value = NULL;
    return qargarr;
}

void l4qarg_free(L4QARG* qarg){
    int i;
    for(i=0; !(qarg[i].arg_name == NULL && qarg[i].arg_value == NULL); i++){
        free(qarg[i].arg_name);
        if(qarg[i].arg_value != NULL){
            free(qarg[i].arg_value);
        }
    }
    free(qarg);
}