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/* ISC license. */
#include <stddef.h>
#include <stdint.h>
#include <limits.h>
#include <errno.h>
#include <skalibs/uint64.h>
#include <skalibs/bytestr.h>
#include <skalibs/stralloc.h>
#include <execline/execline.h>
int el_parse (stralloc *sa, el_chargen_func_ref next, void *source)
{
static unsigned char const class[256] = "`aaaaaaaaadaaaaaaaaaaaaaaaaaaaaaafcbffffffffffffjhhhhhhhiifffffffmmmmmmfffffffffffffffffffffeffffggmmmgfffffffkfffkfkfkflffnfoffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" ;
static uint16_t const table[17][16] =
{
{ 0x0011, 0x0000, 0x0001, 0x2008, 0x0000, 0x0005, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2402, 0x2403 },
{ 0x0011, 0x0001, 0x0001, 0x0001, 0x0000, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001 },
{ 0x0012, 0x1000, 0x0404, 0x0008, 0x1000, 0x0005, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404 },
{ 0x0911, 0x0900, 0x0404, 0x0008, 0x0900, 0x0005, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404 },
{ 0x0111, 0x0100, 0x0404, 0x0008, 0x0100, 0x0006, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404 },
{ 0x0011, 0x2404, 0x2404, 0x2404, 0x0000, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404, 0x2404 },
{ 0x0012, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404, 0x0404 },
{ 0x0012, 0x0408, 0x0408, 0x0408, 0x0008, 0x0408, 0x0408, 0x0208, 0x448c, 0x448c, 0x0089, 0x0208, 0x0408, 0x0408, 0x0408, 0x0408 },
{ 0x0012, 0x0408, 0x0408, 0x0004, 0x0408, 0x0007, 0x0408, 0x0408, 0x0408, 0x0408, 0x0408, 0x0408, 0x0408, 0x0408, 0x0408, 0x0408 },
{ 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x440a, 0x0012, 0x440a, 0x0012, 0x008e, 0x0012, 0x0012, 0x0012 },
{ 0x8111, 0x8408, 0x8408, 0x8004, 0x8408, 0x8007, 0x8408, 0x8408, 0x040b, 0x8408, 0x040b, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408 },
{ 0x8111, 0x8408, 0x8408, 0x8004, 0x8408, 0x8007, 0x8408, 0x8408, 0x0410, 0x8408, 0x0410, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408 },
{ 0x8111, 0x8408, 0x8408, 0x8004, 0x8408, 0x8007, 0x8408, 0x8408, 0x040d, 0x040d, 0x040d, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408 },
{ 0x8111, 0x8408, 0x8408, 0x8004, 0x8408, 0x8007, 0x8408, 0x8408, 0x0410, 0x0410, 0x0410, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408 },
{ 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x0012, 0x440f, 0x440f, 0x440f, 0x440f, 0x0012, 0x0012, 0x440f, 0x0012, 0x0012 },
{ 0x8111, 0x8408, 0x8408, 0x8004, 0x8408, 0x8007, 0x8408, 0x0410, 0x0410, 0x0410, 0x0410, 0x8408, 0x8408, 0x0410, 0x8408, 0x8408 },
{ 0x8111, 0x8408, 0x8408, 0x8004, 0x8408, 0x8007, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408, 0x8408 }
} ;
size_t mark = 0 ;
unsigned int n = 0, blevel = 0 ;
uint8_t state = 0, base = 10 ;
while (state < 0x11)
{
uint16_t c ;
unsigned char cur ;
if (!(*next)(&cur, source)) return -1 ;
c = table[state][class[cur]-'`'] ;
state = c & 0x1F ;
if (c & 0x8000U)
{
uint64_t u ;
if (!stralloc_0(sa)) return -1 ;
sa->len = mark ;
uint64_scan_base(sa->s + sa->len, &u, base) ;
if (!u || u > 0xff) return -2 ;
sa->s[sa->len++] = (unsigned char)u ;
}
if (c & 0x4000U) mark = sa->len ;
if (c & 0x2000U)
{
unsigned int i = blevel ;
if (!stralloc_readyplus(sa, i<<2)) return -1 ;
while (i--) sa->s[sa->len++] = ' ' ;
}
if (c & 0x1000U) sa->len -= ++blevel ;
if (c & 0x0800U)
{
if (!blevel--) return -4 ;
sa->len -= 2 ;
}
if (c & 0x0400U) if (!stralloc_catb(sa, (char *)&cur, 1)) return -1 ;
if (c & 0x0200U)
{
char x = 7 + byte_chr("abtnvfr", 7, cur) ;
if (!stralloc_catb(sa, &x, 1)) return -1 ;
}
if (c & 0x0100U)
{
if (n++ >= INT_MAX) return (errno = E2BIG, -1) ;
if (!stralloc_0(sa)) return -1 ;
}
if (c & 0x0080U)
{
switch (cur)
{
case 'x' : base = 16 ; break ;
case '0' : base = 8 ; break ;
default : base = 10 ;
}
}
}
if (state > 0x11) return -2 ;
if (blevel) return -3 ;
return n ;
}
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