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/* This is copyrighted software but you may use/distribute it *
* in accordance with the conditions set out in the file COPYING */
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include "defs.h"
int
addalias (char *as, int al, char *ds, int dl)
{
struct ali *nptr;
char *aname, *adef;
#ifdef DEBUG
fprintf (stderr, "Head is [%p]\n", head);
#endif
nptr = (struct ali *) malloc (sizeof (struct ali));
if (nptr == NULL)
return 1;
aname = (char *) malloc (sizeof (char) * CEM (al + 2, 16));
if (aname == NULL)
{
free (nptr);
return 1;
}
adef = (char *) malloc (sizeof (char) * CEM (dl + 2, 16));
if (adef == NULL)
{
free (nptr);
free (aname);
return 1;
}
#ifdef DEBUG
fprintf (stderr, "mallocs worked\n");
#endif
strncpy (aname, as, al);
aname[al] = '\0';
strncpy (adef, ds, dl);
adef[dl] = '\0';
#ifdef DEBUG
fprintf (stderr, "aname is <%s>, adef is <%s>, al is %d\n", aname, adef, al);
#endif
nptr->len = al;
nptr->aln = aname;
nptr->dfn = adef;
nptr->next = head;
#ifdef DEBUG
fprintf (stderr, "assigned to nptr\n");
#endif
head = nptr;
return 0;
}
int
zapalias (char *as, int al)
{
struct ali *fptr, *nptr;
fptr = head;
nptr = NULL;
while (fptr != NULL)
{
if ((!strncmp (as, fptr->aln, al)) && (al == fptr->len))
{
#ifdef DEBUG
fprintf (stderr, "Found match with <%s> equal <%s> of len %d\n", as, fptr->aln, al);
#endif
if (nptr == NULL)
head = fptr->next;
else
nptr->next = fptr->next;
free (fptr);
return 0;
}
nptr = fptr;
fptr = fptr->next;
}
return 1;
}
int
cleanalias ()
{
struct ali *fptr, *tptr;
fptr = head;
while (fptr != NULL)
{
tptr = fptr;
fptr = fptr->next;
free (tptr);
}
return 0;
}
int
findalias (char *ss, int sc, int sl)
{
struct ali *fptr;
int i;
fptr = head;
while (fptr != NULL)
{
if ((!strncmp (ss, fptr->aln, sc)) && (sc == fptr->len))
{
#ifdef DEBUG
fprintf (stderr, "Found match with <%s> equal <%s> of len %d\n", ss, fptr->aln, sc);
#endif
if (strlen (fptr->dfn) > (sl - 2))
return 1;
strcpy (ss, fptr->dfn);
#ifdef DEBUG
fprintf (stderr, "Substituted <%s>\n", ss);
#endif
i = 0;
while (ss[i] != '\0')
{
if (isspace (ss[i]) && i && (ss[i - 1] != '\0'))
ss[i] = '\0';
i++;
}
ss[i + 1] = '\0';
return 0;
}
else
{
#ifdef DEBUG
fprintf (stderr, "skipping <ss=%s>, <aln=%s>, <sc=%d> and <len=%d>\n", ss,
fptr->aln, sc, fptr->len);
#endif
}
fptr = fptr->next;
}
return 1;
}
int
aliasdump (FILE * out)
{
struct ali *tptr;
tptr = head;
while (tptr != NULL)
{
fprintf (out, "%s=%s\n", tptr->aln, tptr->dfn);
tptr = tptr->next;
}
return 0;
}
int
naliasdump (FILE * out)
{
struct ali *tptr;
tptr = head;
while (tptr != NULL)
{
fprintf (out, "%s ", tptr->aln);
tptr = tptr->next;
}
fprintf (out, "\n");
return 0;
}
#ifdef OODEBUG
int
main ()
{
char a[40], b[40];
int i;
while (a[0] != 'q')
{
printf ("Enter alias: ");
fgets (a, 40, stdin);
i = 0;
while (!iscntrl (a[i]))
i++;
a[i] = '\0';
printf ("Enter definition: ");
fgets (b, 40, stdin);
i = 0;
while (!iscntrl (b[i]))
i++;
b[i] = '\0';
addalias (a, strlen (a), b, strlen (b));
printf ("Enter alias to be found: ");
fgets (b, 40, stdin);
i = 0;
while (!iscntrl (b[i]))
i++;
b[i] = '\0';
if (findalias (b, strlen (b), 40))
printf ("Findalias failed\n");
else
printf ("Its definition is <%s>\n", b);
}
return 0;
}
#endif
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