anaarg.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include "srxfixup_internal.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
int analize_arguments(const Opttable *dopttable, int argc, char **argv)
{
    Opt_strings *optstr;
    char *opt;
    Opttable *otp;
    Opttable *igadd;
    Opttable *opttable;
    char *cp;
    char **argvp;
    char **nargv;
    int nargc;
    int i;
    int argca;
    char **argva;
 
    for ( i = 0; dopttable[i].option; i += 1 )
    {
        ;
    }
    opttable = (Opttable *)__builtin_alloca((argc + i) * sizeof(Opttable));
    memset(opttable, 0, (argc + i) * sizeof(Opttable));
    memcpy(opttable, dopttable, i * sizeof(Opttable));
    igadd = &opttable[i];
    nargv = (char **)__builtin_alloca((argc + 1) * sizeof(char *));
    memset(nargv, 0, (argc + 1) * sizeof(char *));
    argvp = argv;
    *nargv = *argv;
    nargc = 1;
    for ( argca = argc - 1, argva = argv + 1;; argca -= 1, argva += 1 )
    {
        if ( argca <= 0 )
        {
            for ( i = 0; i < nargc + 1; i += 1 )
            {
                argvp[i] = nargv[i];
            }
            for ( i = 0; opttable[i].option; i += 1 )
            {
                if ( opttable[i].vartype == 'l' )
                {
                    *(SLink **)opttable[i].var = ring_to_liner(*(SLink **)opttable[i].var);
                }
            }
            return nargc;
        }
        if ( **argva == '-' )
        {
            opt = 0;
            for ( i = 0; opttable[i].option; i += 1 )
            {
                if ( opttable[i].havearg == ARG_HAVEARG_UNK3 )
                {
                    if ( !strcmp(opttable[i].option, *argva) )
                    {
                        break;
                    }
                }
                else
                {
                    if ( !strncmp(opttable[i].option, *argva, strlen(opttable[i].option)) )
                    {
                        break;
                    }
                }
            }
            if ( !opttable[i].option )
            {
                return -1;
            }
            if ( opttable[i].havearg != ARG_HAVEARG_NONE && opttable[i].havearg != ARG_HAVEARG_UNK3 )
            {
                if ( opttable[i].havearg == ARG_HAVEARG_UNK4 || (*argva)[strlen(opttable[i].option)] )
                {
                    opt = &(*argva)[strlen(opttable[i].option)];
                }
                else if ( argca > 1 )
                {
                    opt = argva[1];
                    argva += 1;
                    argca -= 1;
                }
            }
            if ( opttable[i].havearg != ARG_HAVEARG_REQUIRED || opt )
            {
                switch ( opttable[i].vartype )
                {
                    case 'F':
                    case 'f':
                        if ( (*argva)[strlen(opttable[i].option)] )
                        {
                            *(uint32_t *)opttable[i].var = strtoul(&(*argva)[strlen(opttable[i].option)], NULL, 16);
                        }
                        else
                        {
                            *(uint32_t *)opttable[i].var = (opttable[i].vartype == 'f') ? 1 : 0;
                        }
                        break;
                    case 'h':
                        if ( opt != NULL )
                        {
                            *(uint32_t *)opttable[i].var = strtoul(opt, 0, 16);
                        }
                        break;
                    case 'i':
                        if ( opt != NULL )
                        {
                            for ( otp = igadd; opttable < otp; otp -= 1 )
                            {
                                *otp = otp[-1];
                            }
                            igadd += 1;
                            opttable->option = opt;
                            opttable->vartype = 'n';
                            opttable->havearg = ARG_HAVEARG_UNK3;
                            cp = strchr(opt, ':');
                            if ( cp )
                            {
                                *cp = 0;
                                switch ( cp[1] )
                                {
                                    case 'c':
                                        opttable->havearg = ARG_HAVEARG_UNK4;
                                        break;
                                    case 'n':
                                        opttable->havearg = ARG_HAVEARG_REQUIRED;
                                        break;
                                    case 'o':
                                        opttable->havearg = ARG_HAVEARG_UNK1;
                                        break;
                                    default:
                                        break;
                                }
                            }
                        }
                        break;
                    case 'l':
                        optstr = (Opt_strings *)calloc(1, sizeof(Opt_strings));
                        optstr->string = opt;
                        *(SLink **)opttable[i].var = add_ring_tail(*(SLink **)opttable[i].var, (SLink *)optstr);
                        break;
                    case 'n':
                        break;
                    case 's':
                        *(const char **)opttable[i].var = opt;
                        break;
                    default:
                        fprintf(stderr, "internal error\n");
                        return -1;
                }
            }
            else
            {
                return -1;
            }
        }
        else
        {
            nargv[nargc] = *argva;
            nargc += 1;
        }
    }
}