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change function definitions

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Buffers are no longer wired into any input or translation functions.
They are supplied as arguments through main.
This commit is contained in:
Eric 2025-05-26 12:23:54 +02:00
parent 9b1fe95a8e
commit 848c3749d2
5 changed files with 53 additions and 60 deletions
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27
trans.c
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@ -7,15 +7,14 @@ unsigned char b64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
"0123456789" \
"+/";
unsigned char *
encode(unsigned char *op, int np)
int
encode(unsigned char *op, int olen, unsigned char *sp)
{
extern unsigned char s[];
unsigned char *sp;
int n;
unsigned char *sb;
sp = s;
switch (np) {
sb = sp;
switch (olen) {
case 3:
*sp++ = b64[(*op & ~3) >> 2];
n = (*op++ & 3) << 4;
@ -39,18 +38,17 @@ encode(unsigned char *op, int np)
break;
}
return s;
return sp-sb+1;
}
unsigned char *
decode(unsigned char *sp, int *np)
int
decode(unsigned char *sp, int slen, unsigned char *op)
{
extern unsigned char o[];
unsigned char *op;
int n, b, atob(int c);
unsigned char *ob;
op = o;
switch (*np) {
ob = op;
switch (slen) {
case 4:
n = atob(*sp++) << 2;
b = atob(*sp++);
@ -75,9 +73,8 @@ decode(unsigned char *sp, int *np)
*op = n + ((atob(*sp) & ~15) >> 4);
break;
}
*np = op-o+1;
return o;
return op-ob+1;
}
int atob(int c)