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params.c
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params.c
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/*
* $Id: params.c,v 2.41 1996/10/15 20:16:35 hzoli Exp $
*
* params.c - parameters
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 1992-1996 Paul Falstad
* 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 Paul Falstad 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 Paul Falstad and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Paul Falstad 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 Paul Falstad and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
/*
This special version of params.c includes changes which are part of Event_Logger,
author Amacri - [email protected]
Please, check Event_Logger license and related terms and conditions.
*/
#include "zsh.h"
#include "fb.h"
static Param argvparam;
// amacri, additions:
extern long ForkCounter, Nice;
extern int fb_x, fb_y, fb_xr, fb_yhr, fb_ylr, fb_xs, fb_ys, fb_col, fb_center, fb_font, fb_NumInk, fb_BgCol, fb_Bold;
extern int fb_FontX, fb_FontY;
extern double EarthRadius;
extern int Precision;
/* Set up parameter hash table. This will add predefined *
* parameter entries as well as setting up parameter table *
* entries for environment variables we inherit. */
/**/
void
createparamtable(void)
{
Param ip, pm;
char **new_environ, **envp, **envp2, **sigptr, **t;
char buf[50], *str, *iname;
int num_env;
paramtab = newhashtable(151);
paramtab->hash = hasher;
paramtab->emptytable = NULL;
paramtab->filltable = NULL;
paramtab->addnode = addhashnode;
paramtab->getnode = gethashnode2;
paramtab->getnode2 = gethashnode2;
paramtab->removenode = removehashnode;
paramtab->disablenode = NULL;
paramtab->enablenode = NULL;
paramtab->freenode = freeparamnode;
paramtab->printnode = printparamnode;
#ifdef ZSH_HASH_DEBUG
paramtab->printinfo = printhashtabinfo;
paramtab->tablename = ztrdup("paramtab");
#endif
/* Add the special parameters to the hash table */
for (ip = special_params; ip->nam; ip++)
paramtab->addnode(paramtab, ztrdup(ip->nam), ip);
if (emulation != EMULATE_SH && emulation != EMULATE_KSH)
while ((++ip)->nam)
paramtab->addnode(paramtab, ztrdup(ip->nam), ip);
argvparam = (Param) paramtab->getnode(paramtab, "*");
noerrs = 1;
HEAPALLOC {
int allexp = opts[ALLEXPORT];
opts[ALLEXPORT] = 0;
/* Add the standard non-special parameters which have to *
* be initialized before we copy the environment variables. *
* We don't want to override whatever values the users has *
* given them in the environment. */
setiparam("ZFORK", 0);
ForkCounter=0;
setiparam("MAILCHECK", 60);
setiparam("LOGCHECK", 60);
setiparam("KEYTIMEOUT", 40);
setiparam("LISTMAX", 100);
#ifdef HAVE_SELECT
setiparam("BAUD", getbaudrate(&shttyinfo)); /* get the output baudrate */
if (pm = (Param) paramtab->getnode(paramtab, "BAUD"))
pm->flags |= PM_SETN;
#endif
setsparam("FCEDIT", ztrdup(DEFAULT_FCEDIT));
setsparam("TMPPREFIX", ztrdup(DEFAULT_TMPPREFIX));
setsparam("TIMEFMT", ztrdup(DEFAULT_TIMEFMT));
setsparam("WATCHFMT", ztrdup(DEFAULT_WATCHFMT));
setsparam("HOST", ztrdup(hostnam));
setsparam("LOGNAME", ztrdup((str = getlogin()) && *str ? str : cached_username));
/* Copy the environment variables we are inheriting to dynamic *
* memory, so we can do mallocs and frees on it. */
num_env = arrlen(environ);
new_environ = (char **) zalloc(sizeof(char *) * (num_env + 1));
*new_environ = NULL;
/* Now incorporate environment variables we are inheriting *
* into the parameter hash table. */
for (envp = new_environ, envp2 = environ; *envp2; envp2++) {
for (str = *envp2; *str && *str != '='; str++);
if (*str == '=') {
iname = ztrdup(*envp2);
str = iname + (str - *envp2);
*str = '\0';
if (!idigit(*iname) && isident(iname) && !strchr(iname, '[') &&
!((pm = (Param) paramtab->getnode(paramtab, iname)) &&
(pm->flags & (PM_DONTIMPORT | PM_EXPORTED))) &&
(pm = setsparam(iname, metafy(str + 1, -1, META_DUP)))) {
*str = '=';
pm->flags |= PM_EXPORTED;
if (pm->flags & PM_SPECIAL) {
zsfree(iname);
iname = mkenvstr(pm->nam, getsparam(pm->nam));
}
pm->env = *envp++ = iname;
*envp = NULL;
} else
zsfree(iname);
}
}
environ = new_environ;
pm = (Param) paramtab->getnode(paramtab, "HOME");
if (!(pm->flags & PM_EXPORTED)) {
pm->flags |= PM_EXPORTED;
pm->env = addenv("HOME", home);
}
pm = (Param) paramtab->getnode(paramtab, "PWD");
if (!(pm->flags & PM_EXPORTED)) {
pm->flags |= PM_EXPORTED|PM_SETN;
pm->env = addenv("PWD", pwd);
}
pm = (Param) paramtab->getnode(paramtab, "LOGNAME");
if (!(pm->flags & PM_EXPORTED)) {
pm->flags |= PM_EXPORTED|PM_SETN;
pm->env = addenv("LOGNAME", pm->u.str);
}
pm = (Param) paramtab->getnode(paramtab, "SHLVL");
if (!(pm->flags & PM_EXPORTED))
pm->flags |= PM_EXPORTED|PM_SETN;
sprintf(buf, "%d", (int)++shlvl);
pm->env = addenv("SHLVL", buf);
/* Add the standard non-special parameters */
setsparam("MACHTYPE", ztrdup(MACHTYPE));
setsparam("OSTYPE", ztrdup(OSTYPE));
setsparam("TTY", ztrdup(ttystrname));
setsparam("VENDOR", ztrdup(VENDOR));
setsparam("ZSH_NAME", ztrdup(zsh_name));
setsparam("ZSH_VERSION", ztrdup(ZSH_VERSION));
setaparam("signals", sigptr = zalloc((SIGCOUNT+4) * sizeof(char *)));
for (t = sigs; (*sigptr++ = ztrdup(*t++)); );
if (pm = (Param) paramtab->getnode(paramtab, "signals"))
pm->flags |= PM_SETN;
opts[ALLEXPORT] = allexp;
} LASTALLOC;
noerrs = 0;
}
/* Create a new parameter node */
/**/
Param
createparam(char *name, int flags)
{
Param pm, oldpm, altpm;
int spec;
if (name != nulstring) {
oldpm = (Param) paramtab->getnode(paramtab, name);
spec = oldpm && (oldpm->flags & PM_SPECIAL);
if ((oldpm && oldpm->level == locallevel) || spec) {
if (oldpm && !(oldpm->flags & PM_UNSET))
return NULL;
pm = oldpm;
pm->ct = 0;
oldpm = pm->old;
pm->flags = (flags & (PM_EXPORTED | PM_LEFT | PM_RIGHT_B |
PM_RIGHT_Z | PM_LOWER | PM_UPPER |
PM_READONLY | PM_TAGGED | PM_UNIQUE)) |
(pm->flags & (PM_SCALAR | PM_INTEGER | PM_ARRAY | PM_SPECIAL));
if (pm->ename &&
(altpm = (Param) paramtab->getnode(paramtab, pm->ename))) {
altpm->flags &= ~(PM_UNSET | PM_UNIQUE | PM_UPPER | PM_LEFT |
PM_RIGHT_B | PM_RIGHT_Z | PM_LOWER |
PM_READONLY | PM_TAGGED | PM_EXPORTED);
}
} else {
pm = (Param) zcalloc(sizeof *pm);
if ((pm->old = oldpm)) {
/* needed to avoid freeing oldpm */
paramtab->removenode(paramtab, name);
}
paramtab->addnode(paramtab, ztrdup(name), pm);
}
if (isset(ALLEXPORT) && !oldpm)
pm->flags |= PM_EXPORTED;
} else {
pm = (Param) alloc(sizeof *pm);
spec = 0;
}
if (!spec) {
pm->flags = flags;
switch (PM_TYPE(flags)) {
case PM_SCALAR:
pm->sets.cfn = strsetfn;
pm->gets.cfn = strgetfn;
break;
case PM_INTEGER:
pm->sets.ifn = intsetfn;
pm->gets.ifn = intgetfn;
break;
case PM_ARRAY:
pm->sets.afn = arrsetfn;
pm->gets.afn = arrgetfn;
break;
#ifdef DEBUG
default:
DPUTS(1, "oops, tried to create param node without valid flag");
break;
#endif
}
}
return pm;
}
/* Return 1 if the string s is a valid identifier, else return 0. */
/**/
int
isident(char *s)
{
char *ss;
int ne;
ne = noeval; /* save the current value of noeval */
if (!*s) /* empty string is definitely not valid */
return 0;
/* find the first character in `s' not in the iident type table */
for (ss = s; *ss; ss++)
if (!iident(*ss))
break;
/* If this exhaust `s' or the next two characters *
* are [(, then it is a valid identifier. */
if (!*ss || (*ss == '[' && ss[1] == '('))
return 1;
/* Else if the next character is not [, then it is *
* definitely not a valid identifier. */
if (*ss != '[')
return 0;
noeval = 1;
(void)mathevalarg(++ss, &ss);
if (*ss == ',')
(void)mathevalarg(++ss, &ss);
noeval = ne; /* restore the value of noeval */
if (*ss != ']' || ss[1])
return 0;
return 1;
}
char **garr;
/**/
long
getarg(char **str, int *inv, Value v, int a2, long *w)
{
int num = 1, word = 0, rev = 0, ind = 0, down = 0, l, i;
char *s = *str, *sep = NULL, *t, sav, *d, **ta, **p, *tt;
long r = 0;
Comp c;
/* first parse any subscription flags */
if (*s == '(' || *s == Inpar) {
int escapes = 0;
int waste;
for (s++; *s != ')' && *s != Outpar && s != *str; s++) {
switch (*s) {
case 'r':
rev = 1;
down = ind = 0;
break;
case 'R':
rev = down = 1;
ind = 0;
break;
case 'i':
rev = ind = 1;
down = 0;
break;
case 'I':
rev = ind = down = 1;
break;
case 'w':
/* If the parameter is a scalar, then make subscription *
* work on a per-word basis instead of characters. */
word = 1;
break;
case 'f':
word = 1;
sep = "\n";
break;
case 'e':
/* obsolate compatibility flag without any real effect */
break;
case 'n':
t = get_strarg(++s);
if (!*t)
goto flagerr;
sav = *t;
*t = '\0';
num = mathevalarg(s + 1, &d);
if (!num)
num = 1;
*t = sav;
s = t;
break;
case 'p':
escapes = 1;
break;
case 's':
/* This gives the string that separates words *
* (for use with the `w' flag. */
t = get_strarg(++s);
if (!*t)
goto flagerr;
sav = *t;
*t = '\0';
sep = escapes ? getkeystring(s + 1, &waste, 1, &waste) :
dupstring(s + 1);
*t = sav;
s = t;
break;
default:
flagerr:
num = 1;
word = rev = ind = down = 0;
sep = NULL;
s = *str - 1;
}
}
if (s != *str)
s++;
}
if (num < 0) {
down = !down;
num = -num;
}
*inv = ind;
for (t=s, i=0; *t && ((*t != ']' && *t != Outbrack && *t != ',') || i); t++)
if (*t == '[' || *t == Inbrack)
i++;
else if (*t == ']' || *t == Outbrack)
i--;
if (!*t)
return 0;
s = dupstrpfx(s, t - s);
*str = tt = t;
if (parsestr(s))
return 0;
singsub(&s);
if (!rev) {
if (!(r = mathevalarg(s, &s)) || (isset(KSHARRAYS) && r >= 0))
r++;
if (word && !v->isarr) {
s = t = getstrvalue(v);
i = wordcount(s, sep, 0);
if (r < 0)
r += i + 1;
if (r < 1)
r = 1;
if (r > i)
r = i;
if (!s || !*s)
return 0;
while ((d = findword(&s, sep)) && --r);
if (!d)
return 0;
if (!a2 && *tt != ',')
*w = (long)(s - t) - 1;
return (a2 ? s : d + 1) - t;
} else if (!v->isarr && !word) {
s = getstrvalue(v);
if (r > 0) {
for (t = s + r - 1; *s && s < t;)
if (*s++ == Meta)
s++, t++, r++;
} else {
r += ztrlen(s);
for (t = s + r; *s && s < t; r--)
if (*s++ == Meta)
t++, r++;
r -= strlen(s);
}
}
} else {
if (!v->isarr && !word) {
l = strlen(s);
if (a2) {
if (!l || *s != '*') {
d = (char *) ncalloc(l + 2);
*d = '*';
strcpy(d + 1, s);
s = d;
}
} else {
if (!l || s[l - 1] != '*') {
d = (char *) ncalloc(l + 2);
strcpy(d, s);
strcat(d, "*");
s = d;
}
}
}
tokenize(s);
if ((c = parsereg(s))) {
if (v->isarr) {
ta = getarrvalue(v);
if (!ta || !*ta)
return 0;
if (down)
for (r = -1, p = ta + arrlen(ta) - 1; p >= ta; r--, p--) {
if (domatch(*p, c, 0) && !--num)
return r;
} else
for (r = 1, p = ta; *p; r++, p++)
if (domatch(*p, c, 0) && !--num)
return r;
} else if (word) {
ta = sepsplit(d = s = getstrvalue(v), sep, 1);
if (down) {
for (p = ta + (r = arrlen(ta)) - 1; p >= ta; p--, r--)
if (domatch(*p, c, 0) && !--num)
break;
if (p < ta)
return 0;
} else {
for (r = 1, p = ta; *p; r++, p++)
if (domatch(*p, c, 0) && !--num)
break;
if (!*p)
return 0;
}
if (a2)
r++;
for (i = 0; (t = findword(&d, sep)) && *t; i++)
if (!--r) {
r = (long)(t - s + (a2 ? -1 : 1));
if (!a2 && *tt != ',')
*w = r + strlen(ta[i]) - 2;
return r;
}
return a2 ? -1 : 0;
} else {
d = getstrvalue(v);
if (!d || !*d)
return 0;
if (a2) {
if (down)
for (r = -2, t = d + strlen(d) - 1; t >= d; r--, t--) {
sav = *t;
*t = '\0';
if (domatch(d, c, 0) && !--num) {
*t = sav;
return r;
}
*t = sav;
} else
for (r = 0, t = d; *t; r++, t++) {
sav = *t;
*t = '\0';
if (domatch(d, c, 0) && !--num) {
*t = sav;
return r;
}
*t = sav;
}
} else {
if (down)
for (r = -1, t = d + strlen(d) - 1; t >= d; r--, t--) {
if (domatch(t, c, 0) && !--num)
return r;
} else
for (r = 1, t = d; *t; r++, t++)
if (domatch(t, c, 0) && !--num)
return r;
}
return 0;
}
}
}
return r;
}
/**/
int
getindex(char **pptr, Value v)
{
int a, b, inv = 0;
char *s = *pptr, *tbrack;
*s++ = '[';
for (tbrack = s; *tbrack && *tbrack != ']' && *tbrack != Outbrack; tbrack++)
if (itok(*tbrack))
*tbrack = ztokens[*tbrack - Pound];
if (*tbrack == Outbrack)
*tbrack = ']';
if ((s[0] == '*' || s[0] == '@') && s[1] == ']') {
if (v->isarr)
v->isarr = (s[0] == '*') ? 1 : -1;
v->a = 0;
v->b = -1;
s += 2;
} else {
long we = 0, dummy;
a = getarg(&s, &inv, v, 0, &we);
if (inv) {
if (!v->isarr && a != 0) {
char *t, *p;
t = getstrvalue(v);
if (a > 0) {
for (p = t + a - 1; p-- > t; )
if (*p == Meta)
a--;
} else
a = -ztrlen(t + a + strlen(t));
}
if (a > 0 && isset(KSHARRAYS))
a--;
v->inv = 1;
v->isarr = 0;
v->a = v->b = a;
if (*s == ',') {
zerr("invalid subscript", NULL, 0);
while (*s != ']' && *s != Outbrack)
s++;
*pptr = s;
return 1;
}
if (*s == ']' || *s == Outbrack)
s++;
} else {
if (a > 0)
a--;
if (*s == ',') {
s++;
b = getarg(&s, &inv, v, 1, &dummy);
if (b > 0)
b--;
} else {
b = we ? we : a;
}
if (*s == ']' || *s == Outbrack) {
s++;
if (v->isarr && a == b)
v->isarr = 0;
v->a = a;
v->b = b;
} else
s = *pptr;
}
}
*pptr = s;
return 0;
}
/**/
Value
getvalue(char **pptr, int bracks)
{
char *s, *t;
char sav;
Value v;
int ppar = 0;
s = t = *pptr;
garr = NULL;
if (idigit(*s))
if (bracks >= 0)
ppar = zstrtol(s, &s, 10);
else
ppar = *s++ - '0';
else if (iident(*s))
while (iident(*s))
s++;
else if (*s == Quest)
*s++ = '?';
else if (*s == Pound)
*s++ = '#';
else if (*s == String)
*s++ = '$';
else if (*s == Qstring)
*s++ = '$';
else if (*s == Star)
*s++ = '*';
else if (*s == '#' || *s == '-' || *s == '?' || *s == '$' ||
*s == '_' || *s == '!' || *s == '@' || *s == '*')
s++;
else
return NULL;
if ((sav = *s))
*s = '\0';
if (ppar) {
v = (Value) hcalloc(sizeof *v);
v->pm = argvparam;
v->inv = 0;
v->a = v->b = ppar - 1;
if (sav)
*s = sav;
} else {
Param pm;
int isvarat;
isvarat = !strcmp(t, "@");
pm = (Param) paramtab->getnode(paramtab, *t == '0' ? "0" : t);
if (sav)
*s = sav;
*pptr = s;
if (!pm || (pm->flags & PM_UNSET))
return NULL;
v = (Value) hcalloc(sizeof *v);
if (PM_TYPE(pm->flags) == PM_ARRAY)
v->isarr = isvarat ? -1 : 1;
v->pm = pm;
v->inv = 0;
v->a = 0;
v->b = -1;
if (bracks > 0 && (*s == '[' || *s == Inbrack)) {
if (getindex(&s, v)) {
*pptr = s;
return v;
}
} else if (v->isarr && iident(*t) && isset(KSHARRAYS))
v->b = 0, v->isarr = 0;
}
if (!bracks && *s)
return NULL;
*pptr = s;
if (v->a > MAX_ARRLEN ||
v->a < -MAX_ARRLEN) {
zerr("subscript to %s: %d", (v->a < 0) ? "small" : "big", v->a);
return NULL;
}
if (v->b > MAX_ARRLEN ||
v->b < -MAX_ARRLEN) {
zerr("subscript to %s: %d", (v->b < 0) ? "small" : "big", v->b);
return NULL;
}
return v;
}
/**/
char *
getstrvalue(Value v)
{
char *s, **ss;
static char buf[(SIZEOF_LONG * 8) + 4];
if (!v)
return hcalloc(1);
HEAPALLOC {
if (v->inv) {
sprintf(buf, "%d", v->a);
s = dupstring(buf);
LASTALLOC_RETURN s;
}
switch(PM_TYPE(v->pm->flags)) {
case PM_ARRAY:
if (v->isarr)
s = sepjoin(v->pm->gets.afn(v->pm), NULL, 1, '\n');
else {
ss = v->pm->gets.afn(v->pm);
if (v->a < 0)
v->a += arrlen(ss);
s = (v->a >= arrlen(ss) || v->a < 0) ? (char *) hcalloc(1) : ss[v->a];
}
LASTALLOC_RETURN s;
case PM_INTEGER:
convbase(s = buf, v->pm->gets.ifn(v->pm), v->pm->ct);
break;
case PM_SCALAR:
s = v->pm->gets.cfn(v->pm);
break;
default:
s = NULL;
DPUTS(1, "oops, param node without valid type");
break;
}
if (v->a == 0 && v->b == -1)
LASTALLOC_RETURN s;
if (v->a < 0)
v->a += strlen(s);
if (v->b < 0)
v->b += strlen(s);
s = (v->a > (int)strlen(s)) ? dupstring("") : dupstring(s + v->a);
if (v->b < v->a)
s[0] = '\0';
else if (v->b - v->a < (int)strlen(s))
s[v->b - v->a + 1 + (s[v->b - v->a] == Meta)] = '\0';
} LASTALLOC;
return s;
}
static char *nular[] = {"", NULL};
/**/
char **
getarrvalue(Value v)
{
char **s;
if (!v)
return arrdup(nular);
if (v->inv) {
char buf[DIGBUFSIZE];
s = arrdup(nular);
sprintf(buf, "%d", v->a);
s[0] = dupstring(buf);
return s;
}
s = v->pm->gets.afn(v->pm);
if (v->a == 0 && v->b == -1)
return s;
if (v->a < 0)
v->a += arrlen(s);
if (v->b < 0)
v->b += arrlen(s);
if (v->a > arrlen(s) || v->a < 0)
s = arrdup(nular);
else
s = arrdup(s) + v->a;
if (v->b < v->a)
s[0] = NULL;
else if (v->b - v->a < arrlen(s))
s[v->b - v->a + 1] = NULL;
return s;
}
// amacri: management of floating point calculations
/**/
double
getmathvalue(Value v)
{
if (!v || v->isarr)
return 0;
if (v->inv)
return v->a;
if (PM_TYPE(v->pm->flags) == PM_INTEGER)
return v->pm->gets.ifn(v->pm);
return matheval(getstrvalue(v));
}
/**/
long
getintvalue(Value v)
{
if (!v || v->isarr)
return 0;
if (v->inv)
return v->a;
if (PM_TYPE(v->pm->flags) == PM_INTEGER)
return v->pm->gets.ifn(v->pm);
return matheval(getstrvalue(v));
}
/**/
void
setstrvalue(Value v, char *val)
{
char buf[(SIZEOF_LONG * 8) + 4];
if (v->pm->flags & PM_READONLY) {
zerr("read-only variable: %s", v->pm->nam, 0);
zsfree(val);
return;
}
switch (PM_TYPE(v->pm->flags)) {
case PM_SCALAR:
MUSTUSEHEAP("setstrvalue");
if (v->a == 0 && v->b == -1) {
(v->pm->sets.cfn) (v->pm, val);
if (v->pm->flags & (PM_LEFT | PM_RIGHT_B | PM_RIGHT_Z) && !v->pm->ct)
v->pm->ct = strlen(val);
} else {
char *z, *x;
int zlen;
z = dupstring((v->pm->gets.cfn) (v->pm));
zlen = strlen(z);
if (v->inv && unset(KSHARRAYS))
v->a--, v->b--;
if (v->a < 0) {
v->a += zlen;
if (v->a < 0)
v->a = 0;
}
if (v->a > zlen)
v->a = zlen;
if (v->b < 0)
v->b += zlen;
if (v->b > zlen - 1)
v->b = zlen - 1;
x = (char *) zalloc(v->a + strlen(val) + zlen - v->b);
strncpy(x, z, v->a);
strcpy(x + v->a, val);
strcat(x + v->a, z + v->b + 1);
(v->pm->sets.cfn) (v->pm, x);
zsfree(val);
}
break;
case PM_INTEGER:
if (val) {
(v->pm->sets.ifn) (v->pm, matheval(val));
zsfree(val);
}
if (!v->pm->ct && lastbase != -1)
v->pm->ct = lastbase;
break;
case PM_ARRAY:
MUSTUSEHEAP("setstrvalue");
{
char **ss = (char **) zalloc(2 * sizeof(char *));
ss[0] = val;
ss[1] = NULL;
setarrvalue(v, ss);
}
break;
}
if ((!v->pm->env && !(v->pm->flags & PM_EXPORTED) &&
!(isset(ALLEXPORT) && !v->pm->old)) ||
(v->pm->flags & PM_ARRAY) || v->pm->ename)
return;
if (PM_TYPE(v->pm->flags) == PM_INTEGER)
convbase(val = buf, v->pm->gets.ifn(v->pm), v->pm->ct);
else
val = v->pm->gets.cfn(v->pm);
if (v->pm->env)
v->pm->env = replenv(v->pm->env, val);
else {
v->pm->flags |= PM_EXPORTED;
v->pm->env = addenv(v->pm->nam, val);
}
}
/**/
void
setintvalue(Value v, long val)
{
char buf[DIGBUFSIZE];
if (v->pm->flags & PM_READONLY) {
zerr("read-only variable: %s", v->pm->nam, 0);
return;
}
switch (PM_TYPE(v->pm->flags)) {
case PM_SCALAR:
case PM_ARRAY:
sprintf(buf, "%ld", val);
setstrvalue(v, ztrdup(buf));
break;
case PM_INTEGER:
(v->pm->sets.ifn) (v->pm, val);
setstrvalue(v, NULL);
break;
}
}
/**/
void
setarrvalue(Value v, char **val)
{
if (v->pm->flags & PM_READONLY) {
zerr("read-only variable: %s", v->pm->nam, 0);
freearray(val);
return;
}
if (PM_TYPE(v->pm->flags) != PM_ARRAY) {
freearray(val);
zerr("attempt to assign array value to non-array", NULL, 0);
return;
}
if (v->a == 0 && v->b == -1)
(v->pm->sets.afn) (v->pm, val);
else {
char **old, **new, **p, **q, **r;
int n, ll, i;
if (v->inv && unset(KSHARRAYS))
v->a--, v->b--;
q = old = v->pm->gets.afn(v->pm);
n = arrlen(old);
if (v->a < 0)
v->a += n;
if (v->b < 0)
v->b += n;
if (v->a < 0)
v->a = 0;
if (v->b < 0)
v->b = 0;
ll = v->a + arrlen(val);
if (v->b < n)
ll += n - v->b;
p = new = (char **) zcalloc(sizeof(char *) * (ll + 1));
for (i = 0; i < v->a; i++)
*p++ = i < n ? ztrdup(*q++) : ztrdup("");
for (r = val; *r;)
*p++ = ztrdup(*r++);
if (v->b + 1 < n)
for (q = old + v->b + 1; *q;)
*p++ = ztrdup(*q++);
*p = NULL;
(v->pm->sets.afn) (v->pm, new);
freearray(val);
}
}
/* Retrieve a math parameter */
// amacri: management of floating point calculations
/**/
double
getmparam(char *s)
{
Value v;
if (!(v = getvalue(&s, 1)))
return 0;
return getmathvalue(v);
}
/* Retrieve an integer parameter */
/**/
long
getiparam(char *s)
{
Value v;
if (!(v = getvalue(&s, 1)))
return 0;
return getintvalue(v);
}
/* Retrieve a scalar (string) parameter */
/**/