1 files changed, 0 insertions, 151 deletions
diff --git a/examples/dte/regexp.c b/examples/dte/regexp.c
deleted file mode 100644
index dc4eb0f..0000000
--- a/examples/dte/regexp.c
+++ /dev/null
@@ -1,151 +0,0 @@
-#include <errno.h>
-#include <stdlib.h>
-#include "regexp.h"
-#include "error.h"
-#include "util/debug.h"
-#include "util/hashmap.h"
-#include "util/str-util.h"
-#include "util/xmalloc.h"
-#include "util/xsnprintf.h"
-
-static HashMap interned_regexps;
-
-bool regexp_error_msg(const regex_t *re, const char *pattern, int err)
-{
-    char msg[1024];
-    regerror(err, re, msg, sizeof(msg));
-    return error_msg("%s: %s", msg, pattern);
-}
-
-bool regexp_compile_internal(regex_t *re, const char *pattern, int flags)
-{
-    int err = regcomp(re, pattern, flags);
-    if (err) {
-        return regexp_error_msg(re, pattern, err);
-    }
-    return true;
-}
-
-void regexp_compile_or_fatal_error(regex_t *re, const char *pattern, int flags)
-{
-    // Note: DEFAULT_REGEX_FLAGS isn't used here because this function
-    // is only used for compiling built-in patterns, where we explicitly
-    // avoid using "enhanced" features
-    int err = regcomp(re, pattern, flags | REG_EXTENDED);
-    if (unlikely(err)) {
-        char msg[1024];
-        regerror(err, re, msg, sizeof(msg));
-        fatal_error(msg, EINVAL);
-    }
-}
-
-bool regexp_exec (
-    const regex_t *re,
-    const char *buf,
-    size_t size,
-    size_t nmatch,
-    regmatch_t *pmatch,
-    int flags
-) {
-    // "If REG_STARTEND is specified, pmatch must point to at least one
-    // regmatch_t (even if nmatch is 0 or REG_NOSUB was specified), to
-    // hold the input offsets for REG_STARTEND."
-    // -- https://man.openbsd.org/regex.3
-    BUG_ON(!pmatch);
-
-// ASan's __interceptor_regexec() doesn't support REG_STARTEND
-#if defined(REG_STARTEND) && !defined(ASAN_ENABLED) && !defined(MSAN_ENABLED)
-    pmatch[0].rm_so = 0;
-    pmatch[0].rm_eo = size;
-    return !regexec(re, buf, nmatch, pmatch, flags | REG_STARTEND);
-#else
-    // Buffer must be null-terminated if REG_STARTEND isn't supported
-    char *tmp = xstrcut(buf, size);
-    int ret = !regexec(re, tmp, nmatch, pmatch, flags);
-    free(tmp);
-    return ret;
-#endif
-}
-
-// Check which word boundary tokens are supported by regcomp(3)
-// (if any) and initialize `rwbt` with them for later use
-bool regexp_init_word_boundary_tokens(RegexpWordBoundaryTokens *rwbt)
-{
-    static const char text[] = "SSfooEE SSfoo fooEE foo SSfooEE";
-    const regoff_t match_start = 20, match_end = 23;
-    static const RegexpWordBoundaryTokens pairs[] = {
-        {"\\<", "\\>"},
-        {"[[:<:]]", "[[:>:]]"},
-        {"\\b", "\\b"},
-    };
-
-    BUG_ON(ARRAYLEN(text) <= match_end);
-    BUG_ON(!mem_equal(text + match_start - 1, " foo ", 5));
-
-    for (size_t i = 0; i < ARRAYLEN(pairs); i++) {
-        const char *start = pairs[i].start;
-        const char *end = pairs[i].end;
-        char patt[32];
-        xsnprintf(patt, sizeof(patt), "%s(foo)%s", start, end);
-        regex_t re;
-        if (regcomp(&re, patt, DEFAULT_REGEX_FLAGS) != 0) {
-            continue;
-        }
-        regmatch_t m[2];
-        bool match = !regexec(&re, text, ARRAYLEN(m), m, 0);
-        regfree(&re);
-        if (match && m[0].rm_so == match_start && m[0].rm_eo == match_end) {
-            *rwbt = pairs[i];
-            return true;
-        }
-    }
-
-    return false;
-}
-
-void free_cached_regexp(CachedRegexp *cr)
-{
-    regfree(&cr->re);
-    free(cr);
-}
-
-const InternedRegexp *regexp_intern(const char *pattern)
-{
-    if (pattern[0] == '\0') {
-        return NULL;
-    }
-
-    InternedRegexp *ir = hashmap_get(&interned_regexps, pattern);
-    if (ir) {
-        return ir;
-    }
-
-    ir = xnew(InternedRegexp, 1);
-    int err = regcomp(&ir->re, pattern, DEFAULT_REGEX_FLAGS | REG_NEWLINE | REG_NOSUB);
-    if (unlikely(err)) {
-        regexp_error_msg(&ir->re, pattern, err);
-        free(ir);
-        return NULL;
-    }
-
-    ir->str = xstrdup(pattern);
-    return hashmap_insert(&interned_regexps, ir->str, ir);
-}
-
-bool regexp_is_interned(const char *pattern)
-{
-    return !!hashmap_find(&interned_regexps, pattern);
-}
-
-// Note: this does NOT free InternedRegexp::str, because it points at the
-// same string as HashMapEntry::key and is already freed by hashmap_free()
-static void free_interned_regexp(InternedRegexp *ir)
-{
-    regfree(&ir->re);
-    free(ir);
-}
-
-void free_interned_regexps(void)
-{
-    hashmap_free(&interned_regexps, (FreeFunction)free_interned_regexp);
-}