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/*********************************************************************/
/* file: antisub.c - functions related to the substitute command */
/* TINTIN III */
/* (T)he K(I)cki(N) (T)ickin D(I)kumud Clie(N)t */
/* coded by peter unold 1992 */
/*********************************************************************/
#include "tintin.h"
#include "protos/action.h"
#include "protos/glob.h"
#include "protos/globals.h"
#include "protos/print.h"
#include "protos/parse.h"
#include "protos/slist.h"
#include "protos/utils.h"
#include "protos/vars.h"
/*******************************/
/* the #antisubstitute command */
/*******************************/
void antisubstitute_command(const char *arg, struct session *ses)
{
char left[BUFFER_SIZE], tmp[BUFFER_SIZE];
kbtree_t(str) *ass = ses->antisubs;
arg = get_arg_in_braces(arg, tmp, 1);
substitute_myvars(tmp, left, ses, 0);
if (!*left)
{
tintin_printf(ses, "#THESE ANTISUBSTITUTES HAVE BEEN DEFINED:");
show_slist(ass);
}
else
{
if (!kb_get(str, ass, left))
kb_put(str, ass, mystrdup(left));
antisubnum++;
if (ses->mesvar[MSG_SUBSTITUTE])
tintin_printf(ses, "Ok. Any line with {%s} will not be subbed.", left);
#ifdef HAVE_SIMD
ses->antisubs_dirty=true;
#endif
}
}
void unantisubstitute_command(const char *arg, struct session *ses)
{
char left[BUFFER_SIZE];
bool had_any = false;
kbtree_t(str) *ass = ses->antisubs;
get_arg_in_braces(arg, left, 1);
if (strchr(left, '*')) /* wildcard deletion -- have to check all */
{
char **todel = malloc(kb_size(ass) * sizeof(char*));
char **last = todel;
STR_ITER(ass, p)
if (match(left, p))
*last++ = (char*)p;
ENDITER
if (last!=todel)
{
had_any = true;
for (char **del = todel; del != last; del++)
{
if (ses->mesvar[MSG_SUBSTITUTE])
tintin_printf(ses, "#Ok. Lines with {%s} will now be subbed.", *del);
kb_del(str, ass, *del);
free(*del);
}
}
free(todel);
}
else /* single item deletion */
{
char **str = kb_get(str, ass, left);
if ((had_any = !!str))
{
if (ses->mesvar[MSG_SUBSTITUTE])
tintin_printf(ses, "#Ok. Lines with {%s} will now be subbed.", left);
kb_del(str, ass, left);
free(*str);
}
}
#ifdef HAVE_SIMD
if (had_any)
ses->antisubs_dirty=true;
#endif
if (!had_any && ses->mesvar[MSG_SUBSTITUTE])
tintin_printf(ses, "#THAT ANTISUBSTITUTE (%s) IS NOT DEFINED.", left);
}
#ifdef HAVE_SIMD
static void build_antisubs_hs(struct session *ses)
{
hs_free_database(ses->antisubs_hs);
ses->antisubs_hs=0;
ses->antisubs_dirty=false;
int n = kb_size(ses->antisubs);
const char **pat = MALLOC(n*sizeof(void*));
unsigned int *flags = MALLOC(n*sizeof(int));
if (!pat || !flags)
die("out of memory");
int j=0;
{
STR_ITER(ses->antisubs, p)
pat[j]=action_to_regex(p);
flags[j]=HS_FLAG_DOTALL|HS_FLAG_SINGLEMATCH;
j++;
ENDITER
}
hs_compile_error_t *error;
if (hs_compile_multi(pat, flags, 0, n, HS_MODE_BLOCK,
0, &ses->antisubs_hs, &error))
{
tintin_eprintf(ses, "#Error: hyperscan compilation failed for antisubs: %s",
error->message);
if (error->expression>=0)
tintin_eprintf(ses, "#Converted bad expression was: %s",
pat[error->expression]);
hs_free_compile_error(error);
}
for (int i=0; i<n; i++)
SFREE((char*)pat[i]);
MFREE(flags, n*sizeof(int));
MFREE(pat, n*sizeof(void*));
if (ses->antisubs_hs && hs_alloc_scratch(ses->antisubs_hs, &hs_scratch))
die("out of memory");
}
static int anti_match(unsigned int id, unsigned long long from,
unsigned long long to, unsigned int flags, void *context)
{
return 1;
}
#endif
bool do_one_antisub(const char *line, struct session *ses)
{
#ifdef HAVE_SIMD
if (!kb_size(ses->antisubs))
return false;
if (simd && ses->antisubs_dirty)
build_antisubs_hs(ses);
if (simd)
{
hs_error_t err=hs_scan(ses->antisubs_hs, line, strlen(line), 0,
hs_scratch, anti_match, ses);
if (err == HS_SCAN_TERMINATED)
return true;
if (!err)
return false;
tintin_eprintf(ses, "#Error in hs_scan: %d", err);
}
#endif
pvars_t vars;
STR_ITER(ses->antisubs, p)
if (check_one_action(line, p, &vars, false))
return true;
ENDITER
return false;
}
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