int cli_pcre_compile(struct cli_pcre_data *pd, long long unsigned match_limit, long long unsigned match_limit_recursion, unsigned int options, int opt_override)
{
int errornum, erroffset;
pcre2_general_context *gctx;
pcre2_compile_context *cctx;
if (!pd || !pd->expression) {
cli_errmsg("cli_pcre_compile: NULL pd or NULL pd->expression\n");
return CL_ENULLARG;
}
gctx = pcre2_general_context_create(cli_pcre_malloc, cli_pcre_free, NULL);
if (!gctx) {
cli_errmsg("cli_pcre_compile: Unable to allocate memory for general context\n");
return CL_EMEM;
}
cctx = pcre2_compile_context_create(gctx);
if (!cctx) {
cli_errmsg("cli_pcre_compile: Unable to allocate memory for compile context\n");
pcre2_general_context_free(gctx);
return CL_EMEM;
}
/* compile the pcre2 regex last arg is charset, allow for options override */
if (opt_override)
pd->re = pcre2_compile(pd->expression, PCRE2_ZERO_TERMINATED, options, &errornum, &erroffset, cctx); /* pd->re handled by pcre2 -> call pcre_free() -> calls free() */
else
pd->re = pcre2_compile(pd->expression, PCRE2_ZERO_TERMINATED, pd->options, &errornum, &erroffset, cctx); /* pd->re handled by pcre2 -> call pcre_free() -> calls free() */
if (pd->re == NULL) {
PCRE2_UCHAR errmsg[256];
pcre2_get_error_message(errornum, errmsg, sizeof(errmsg));
cli_errmsg("cli_pcre_compile: PCRE2 compilation failed at offset %d: %s\n", erroffset, errmsg);
pcre2_compile_context_free(cctx);
pcre2_general_context_free(gctx);
return CL_EMALFDB;
}
/* setup matching context and set the match limits */
pd->mctx = pcre2_match_context_create(gctx);
if (!pd->mctx) {
cli_errmsg("cli_pcre_compile: Unable to allocate memory for match context\n");
pcre2_compile_context_free(cctx);
pcre2_general_context_free(gctx);
return CL_EMEM;
}
pcre2_set_match_limit(pd->mctx, match_limit);
pcre2_set_recursion_limit(pd->mctx, match_limit_recursion);
/* non-dynamic allocated fields set by caller */
pcre2_compile_context_free(cctx);
pcre2_general_context_free(gctx);
return CL_SUCCESS;
}
static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt)
{
int error;
PCRE2_UCHAR errbuf[256];
PCRE2_SIZE erroffset;
int options = PCRE2_MULTILINE;
const uint8_t *character_tables = NULL;
int jitret;
assert(opt->pcre2);
p->pcre2_compile_context = NULL;
if (opt->ignore_case) {
if (has_non_ascii(p->pattern)) {
character_tables = pcre2_maketables(NULL);
p->pcre2_compile_context = pcre2_compile_context_create(NULL);
pcre2_set_character_tables(p->pcre2_compile_context, character_tables);
}
options |= PCRE2_CASELESS;
}
if (is_utf8_locale() && has_non_ascii(p->pattern))
options |= PCRE2_UTF;
p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern,
p->patternlen, options, &error, &erroffset,
p->pcre2_compile_context);
if (p->pcre2_pattern) {
p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL);
if (!p->pcre2_match_data)
die("Couldn't allocate PCRE2 match data");
} else {
pcre2_get_error_message(error, errbuf, sizeof(errbuf));
compile_regexp_failed(p, (const char *)&errbuf);
}
pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on);
if (p->pcre2_jit_on == 1) {
jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE);
if (jitret)
die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret);
p->pcre2_jit_stack = pcre2_jit_stack_create(1, 1024 * 1024, NULL);
if (!p->pcre2_jit_stack)
die("Couldn't allocate PCRE2 JIT stack");
p->pcre2_match_context = pcre2_match_context_create(NULL);
if (!p->pcre2_match_context)
die("Couldn't allocate PCRE2 match context");
pcre2_jit_stack_assign(p->pcre2_match_context, NULL, p->pcre2_jit_stack);
} else if (p->pcre2_jit_on != 0) {
die("BUG: The pcre2_jit_on variable should be 0 or 1, not %d",
p->pcre1_jit_on);
}
}
if( ptr )
hb_xfree( ptr );
}
#endif
HB_CALL_ON_STARTUP_BEGIN( _hb_regex_init_ )
#if defined( HB_HAS_PCRE2 )
/* detect UTF-8 support.
* In BCC builds this code also forces linking newer PCRE versions
* then the one included in BCC RTL.
*/
if( pcre2_config( PCRE2_CONFIG_UNICODE, &s_iUTF8Enabled ) != 0 )
s_iUTF8Enabled = 0;
s_re_ctxg = pcre2_general_context_create( hb_pcre2_grab, hb_pcre2_free, NULL );
s_re_ctxc = pcre2_compile_context_create( s_re_ctxg );
s_re_ctxm = pcre2_match_context_create( s_re_ctxg );
hb_vmAtExit( hb_pcre2_exit, NULL );
#elif defined( HB_HAS_PCRE )
/* detect UTF-8 support.
* In BCC builds this code also forces linking newer PCRE versions
* then the one included in BCC RTL.
*/
if( pcre_config( PCRE_CONFIG_UTF8, &s_iUTF8Enabled ) != 0 )
s_iUTF8Enabled = 0;
pcre_malloc = hb_pcre_grab;
pcre_free = hb_pcre_free;
pcre_stack_malloc = hb_pcre_grab;
pcre_stack_free = hb_pcre_free;
