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Experimental PCRE library support

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To compile with PCRE install libpcre-dev(el) and run:

cc  -Wall -Wextra -O3 -DPCRE -D_GNU_SOURCE -D_DEFAULT_SOURCE -I/usr/include/ncursesw -I/usr/include -o nnn src/nnn.c -lreadline -lncursesw -ltinfo -lpcre
This commit is contained in:
Arun Prakash Jana 2020-01-24 00:24:51 +05:30
parent d67ad84360
commit 827875c3ef
No known key found for this signature in database
GPG key ID: A75979F35C080412
1 changed files with 76 additions and 4 deletions
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80
src/nnn.c
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@ -85,7 +85,11 @@
#include <readline/history.h>
#include <readline/readline.h>
#endif
#ifdef PCRE
#include <pcre.h>
#else
#include <regex.h>
#endif
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
@ -213,7 +217,11 @@ typedef struct {
} kv;
typedef struct {
#ifdef PCRE
const pcre *pcrex;
#else
const regex_t *regex;
#endif
const char *str;
} fltrexp_t;
@ -336,7 +344,11 @@ static kv bookmark[BM_MAX];
static kv plug[PLUGIN_MAX];
static uchar g_tmpfplen;
static uchar blk_shift = BLK_SHIFT_512;
#ifdef PCRE
static pcre *archive_pcre;
#else
static regex_t archive_re;
#endif
/* Retain old signal handlers */
#ifdef __linux__
@ -1841,16 +1853,37 @@ static char xchartohex(char c)
}
static char * (*fnstrstr)(const char *haystack, const char *needle) = &strcasestr;
#ifdef PCRE
static const unsigned char *tables;
static int pcreflags = PCRE_NO_AUTO_CAPTURE | PCRE_EXTENDED | PCRE_CASELESS;
#else
static int regflags = REG_NOSUB | REG_EXTENDED | REG_ICASE;
#endif
#ifdef PCRE
static int setfilter(pcre **pcrex, const char *filter)
{
const char *errstr = NULL;
int erroffset = 0;
*pcrex = pcre_compile(filter, pcreflags, &errstr, &erroffset, tables);
return errstr ? -1 : 0;
}
#else
static int setfilter(regex_t *regex, const char *filter)
{
return regcomp(regex, filter, regflags);
}
#endif
static int visible_re(const fltrexp_t *fltrexp, const char *fname)
{
#ifdef PCRE
return pcre_exec(fltrexp->pcrex, NULL, fname, strlen(fname), 0, 0, NULL, 0);
#else
return regexec(fltrexp->regex, fname, 0, NULL, 0) == 0;
#endif
}
static int visible_str(const fltrexp_t *fltrexp, const char *fname)
@ -2076,13 +2109,18 @@ static inline void swap_ent(int id1, int id2)
*pdent2 = *(&_dent);
}
/*
* Move non-matching entries to the end
*/
#ifdef PCRE
static int fill(const char *fltr, pcre *pcrex)
#else
static int fill(const char *fltr, regex_t *re)
#endif
{
int count = 0;
#ifdef PCRE
fltrexp_t fltrexp = { .pcrex = pcrex, .str = fltr };
#else
fltrexp_t fltrexp = { .regex = re, .str = fltr };
#endif
for (; count < ndents; ++count) {
if (filterfn(&fltrexp, dents[count].name) == 0) {
@ -2100,15 +2138,29 @@ static int fill(const char *fltr, regex_t *re)
static int matches(const char *fltr)
{
#ifdef PCRE
pcre *pcrex = NULL;
/* Search filter */
if (cfg.regex && setfilter(&pcrex, fltr))
return -1;
ndents = fill(fltr, pcrex);
if (cfg.regex)
pcre_free(pcrex);
#else
regex_t re;
/* Search filter */
if (cfg.regex && setfilter(&re, fltr) != 0)
if (cfg.regex && setfilter(&re, fltr))
return -1;
ndents = fill(fltr, &re);
if (cfg.regex)
regfree(&re);
#endif
qsort(dents, ndents, sizeof(*dents), entrycmpfn);
@ -2210,7 +2262,11 @@ static int filterentries(char *path, char *lastname)
/* Toggle case-sensitivity */
if (*ch == CASE) {
fnstrstr = (fnstrstr == &strcasestr) ? &strstr : &strcasestr;
#ifdef PCRE
pcreflags ^= PCRE_CASELESS;
#else
regflags ^= REG_ICASE;
#endif
showfilter(ln);
continue;
}
@ -4849,7 +4905,12 @@ nochange:
goto nochange;
}
#ifdef PCRE
if (!pcre_exec(archive_pcre, NULL, dents[cur].name,
strlen(dents[cur].name), 0, 0, NULL, 0)) {
#else
if (!regexec(&archive_re, dents[cur].name, 0, NULL, 0)) {
#endif
r = get_input(messages[MSG_ARCHIVE_OPTS]);
if (r == 'l' || r == 'x') {
mkpath(path, dents[cur].name, newpath);
@ -6076,7 +6137,11 @@ int main(int argc, char *argv[])
/* Set archive handling (enveditor used as tmp var) */
enveditor = getenv(env_cfg[NNN_ARCHIVE]);
#ifdef PCRE
if (setfilter(&archive_pcre, (enveditor ? enveditor : archive_regex))) {
#else
if (setfilter(&archive_re, (enveditor ? enveditor : archive_regex))) {
#endif
fprintf(stderr, "%s\n", messages[MSG_INVALID_REG]);
return _FAILURE;
}
@ -6145,6 +6210,9 @@ int main(int argc, char *argv[])
#ifndef NOLOCALE
/* Set locale */
setlocale(LC_ALL, "");
#ifdef PCRE
tables = pcre_maketables();
#endif
#endif
#ifndef NORL
@ -6185,7 +6253,11 @@ int main(int argc, char *argv[])
unlink(g_selpath);
/* Free the regex */
#ifdef PCRE
pcre_free(archive_pcre);
#else
regfree(&archive_re);
#endif
/* Free the selection buffer */
free(pselbuf);