// example.c - an example module for zsh

//

// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.

//

/*

 * This file is part of zsh, the Z shell.

 *

 * Copyright (c) 1996-1997 Zoltán Hidvégi

 * All rights reserved.

 *

 * Permission is hereby granted, without written agreement and without

 * license or royalty fees, to use, copy, modify, and distribute this

 * software and to distribute modified versions of this software for any

 * purpose, provided that the above copyright notice and the following

 * two paragraphs appear in all copies of this software.

 *

 * In no event shall Zoltán Hidvégi or the Zsh Development Group be liable

 * to any party for direct, indirect, special, incidental, or consequential

 * damages arising out of the use of this software and its documentation,

 * even if Zoltán Hidvégi and the Zsh Development Group have been advised of

 * the possibility of such damage.

 *

 * Zoltán Hidvégi and the Zsh Development Group specifically disclaim any

 * warranties, including, but not limited to, the implied warranties of

 * merchantability and fitness for a particular purpose.  The software

 * provided hereunder is on an "as is" basis, and Zoltán Hidvégi and the

 * Zsh Development Group have no obligation to provide maintenance,

 * support, updates, enhancements, or modifications.

 *

 */

#include "example.mdh"

#include "example.pro"

#ifdef __SYMBIAN32__

#ifdef __WINSCW__

#pragma warn_unusedarg off

#endif//__WINSCW__

#endif//__SYMBIAN32__

/* parameters */

static zlong intparam;

static char *strparam;

static char **arrparam;

/**/

static int

bin_example(char *nam, char **args, Options ops, UNUSED(int func))

{

    unsigned char c;

    char **oargs = args, **p = arrparam;

    long i = 0;

    printf("Options: ");

    for (c = 32; ++c < 128;)

	if (OPT_ISSET(ops,c))

	    putchar(c);

    printf("\nArguments:");

    for (; *args; i++, args++) {

	putchar(' ');

	fputs(*args, stdout);

    }

    printf("\nName: %s\n", nam);

#ifdef ZSH_64_BIT_TYPE

    printf("\nInteger Parameter: %s\n", output64(intparam));

#else

    printf("\nInteger Parameter: %ld\n", intparam);

#endif

    printf("String Parameter: %s\n", strparam ? strparam : "");

    printf("Array Parameter:");

    if (p)

	while (*p) printf(" %s", *p++);

    printf("\n");

    intparam = i;

    zsfree(strparam);

    strparam = ztrdup(*oargs ? *oargs : "");

    freearray(arrparam);

    arrparam = zarrdup(oargs);

    return 0;

}

/**/

static int

cond_p_len(char **a, UNUSED(int id))

{

    char *s1 = cond_str(a, 0, 0);

    if (a[1]) {

	zlong v = cond_val(a, 1);

	return strlen(s1) == v;

    } else {

	return !s1[0];

    }

}

/**/

static int

cond_i_ex(char **a, UNUSED(int id))

{

    char *s1 = cond_str(a, 0, 0), *s2 = cond_str(a, 1, 0);

    return !strcmp("example", dyncat(s1, s2));

}

/**/

static mnumber

math_sum(UNUSED(char *name), int argc, mnumber *argv, UNUSED(int id))

{

    mnumber ret;

    int f = 0;

    ret.u.l = 0;

    while (argc--) {

	if (argv->type == MN_INTEGER) {

	    if (f)

		ret.u.d += (double) argv->u.l;

	    else

		ret.u.l += argv->u.l;

	} else {

	    if (f)

		ret.u.d += argv->u.d;

	    else {

		ret.u.d = ((double) ret.u.l) + ((double) argv->u.d);

		f = 1;

	    }

	}

	argv++;

    }

    ret.type = (f ? MN_FLOAT : MN_INTEGER);

    return ret;

}

/**/

static mnumber

math_length(UNUSED(char *name), char *arg, UNUSED(int id))

{

    mnumber ret;

    ret.type = MN_INTEGER;

    ret.u.l = strlen(arg);

    return ret;

}

/**/

static int

ex_wrapper(Eprog prog, FuncWrap w, char *name)

{

    if (strncmp(name, "example", 7))

	return 1;

    else {

	int ogd = opts[GLOBDOTS];

	opts[GLOBDOTS] = 1;

	runshfunc(prog, w, name);

	opts[GLOBDOTS] = ogd;

	return 0;

    }

}

/*

 * boot_ is executed when the module is loaded.

 */

static struct builtin bintab[] = {

    BUILTIN("example", 0, bin_example, 0, -1, 0, "flags", NULL),

};

static struct conddef cotab[] = {

    CONDDEF("len", 0, cond_p_len, 1, 2, 0),

    CONDDEF("ex", CONDF_INFIX, cond_i_ex, 0, 0, 0),

};

static struct paramdef patab[] = {

    INTPARAMDEF("exint", &intparam),

    STRPARAMDEF("exstr", &strparam),

    ARRPARAMDEF("exarr", &arrparam),

};

static struct mathfunc mftab[] = {

    NUMMATHFUNC("sum", math_sum, 1, -1, 0),

    STRMATHFUNC("length", math_length, 0),

};

static struct funcwrap wrapper[] = {

    WRAPDEF(ex_wrapper),

};

/**/

int

setup_(UNUSED(Module m))

{

    printf("The example module has now been set up.\n");

    fflush(stdout);

    return 0;

}

/**/

int

boot_(Module m)

{

    intparam = 42;

    strparam = ztrdup("example");

    arrparam = (char **) zalloc(3 * sizeof(char *));

    arrparam[0] = ztrdup("example");

    arrparam[1] = ztrdup("array");

    arrparam[2] = NULL;

    return !(addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab)) |

	     addconddefs(m->nam, cotab, sizeof(cotab)/sizeof(*cotab)) |

	     addparamdefs(m->nam, patab, sizeof(patab)/sizeof(*patab)) |

	     addmathfuncs(m->nam, mftab, sizeof(mftab)/sizeof(*mftab)) |

	     !addwrapper(m, wrapper));

}

/**/

int

cleanup_(Module m)

{

    deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));

    deleteconddefs(m->nam, cotab, sizeof(cotab)/sizeof(*cotab));

    deleteparamdefs(m->nam, patab, sizeof(patab)/sizeof(*patab));

    deletemathfuncs(m->nam, mftab, sizeof(mftab)/sizeof(*mftab));

    deletewrapper(m, wrapper);

    return 0;

}

/**/

int

finish_(UNUSED(Module m))

{

    printf("Thank you for using the example module.  Have a nice day.\n");

    fflush(stdout);

    return 0;

}