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/*
* example.c - an example module for zsh
*
* 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"
/* parameters */
static zlong intparam;
static char *strparam;
static char **arrparam;
/**/
static int
bin_example(char *nam, char **args, Options ops, 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, 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, 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(char *name, int argc, mnumber *argv, 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(char *name, char *arg, 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_(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_(Module m)
{
printf("Thank you for using the example module. Have a nice day.\n");
fflush(stdout);
return 0;
}
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