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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* FRR string processing utilities.
* Copyright (C) 2018 Cumulus Networks, Inc.
* Quentin Young
*/
#include "zebra.h"
#include <string.h>
#include <ctype.h>
#include <sys/types.h>
#ifdef HAVE_LIBPCRE2_POSIX
#ifndef _FRR_PCRE2_POSIX
#define _FRR_PCRE2_POSIX
#include <pcre2posix.h>
#endif /* _FRR_PCRE2_POSIX */
#elif defined(HAVE_LIBPCREPOSIX)
#include <pcreposix.h>
#else
#include <regex.h>
#endif /* HAVE_LIBPCRE2_POSIX */
#include "frrstr.h"
#include "memory.h"
#include "vector.h"
void frrstr_split(const char *string, const char *delimiter, char ***result,
int *argc)
{
if (!string)
return;
unsigned int sz = 4, idx = 0;
char *copy, *copystart;
*result = XCALLOC(MTYPE_TMP, sizeof(char *) * sz);
copystart = copy = XSTRDUP(MTYPE_TMP, string);
*argc = 0;
const char *tok = NULL;
while (copy) {
tok = strsep(©, delimiter);
(*result)[idx] = XSTRDUP(MTYPE_TMP, tok);
if (++idx == sz)
*result = XREALLOC(MTYPE_TMP, *result,
(sz *= 2) * sizeof(char *));
(*argc)++;
}
XFREE(MTYPE_TMP, copystart);
}
vector frrstr_split_vec(const char *string, const char *delimiter)
{
char **result;
int argc;
if (!string)
return NULL;
frrstr_split(string, delimiter, &result, &argc);
vector v = array_to_vector((void **)result, argc);
XFREE(MTYPE_TMP, result);
return v;
}
char *frrstr_join(const char **parts, int argc, const char *join)
{
int i;
char *str;
char *p;
size_t len = 0;
size_t joinlen = join ? strlen(join) : 0;
if (!argc)
return NULL;
for (i = 0; i < argc; i++)
len += strlen(parts[i]);
len += argc * joinlen + 1;
if (!len)
return NULL;
p = str = XMALLOC(MTYPE_TMP, len);
for (i = 0; i < argc; i++) {
size_t arglen = strlen(parts[i]);
memcpy(p, parts[i], arglen);
p += arglen;
if (i + 1 != argc && join) {
memcpy(p, join, joinlen);
p += joinlen;
}
}
*p = '\0';
return str;
}
char *frrstr_join_vec(vector v, const char *join)
{
char **argv;
int argc;
vector_to_array(v, (void ***)&argv, &argc);
char *ret = frrstr_join((const char **)argv, argc, join);
XFREE(MTYPE_TMP, argv);
return ret;
}
void frrstr_filter_vec(vector v, regex_t *filter)
{
regmatch_t ignored[1];
for (unsigned int i = 0; i < vector_active(v); i++) {
if (regexec(filter, vector_slot(v, i), 0, ignored, 0)) {
XFREE(MTYPE_TMP, vector_slot(v, i));
vector_unset(v, i);
}
}
}
void frrstr_strvec_free(vector v)
{
unsigned int i;
char *cp;
if (!v)
return;
for (i = 0; i < vector_active(v); i++) {
cp = vector_slot(v, i);
XFREE(MTYPE_TMP, cp);
}
vector_free(v);
}
char *frrstr_replace(const char *str, const char *find, const char *replace)
{
char *ch;
char *nustr = XSTRDUP(MTYPE_TMP, str);
size_t findlen = strlen(find);
size_t repllen = strlen(replace);
while ((ch = strstr(nustr, find))) {
if (repllen > findlen) {
size_t nusz = strlen(nustr) + repllen - findlen + 1;
nustr = XREALLOC(MTYPE_TMP, nustr, nusz);
ch = strstr(nustr, find);
}
size_t nustrlen = strlen(nustr);
size_t taillen = (nustr + nustrlen) - (ch + findlen);
memmove(ch + findlen + (repllen - findlen), ch + findlen,
taillen + 1);
memcpy(ch, replace, repllen);
}
return nustr;
}
bool frrstr_startswith(const char *str, const char *prefix)
{
if (!str || !prefix)
return false;
size_t lenstr = strlen(str);
size_t lenprefix = strlen(prefix);
if (lenprefix > lenstr)
return false;
return strncmp(str, prefix, lenprefix) == 0;
}
bool frrstr_endswith(const char *str, const char *suffix)
{
if (!str || !suffix)
return false;
size_t lenstr = strlen(str);
size_t lensuffix = strlen(suffix);
if (lensuffix > lenstr)
return false;
return strncmp(&str[lenstr - lensuffix], suffix, lensuffix) == 0;
}
int all_digit(const char *str)
{
for (; *str != '\0'; str++)
if (!isdigit((unsigned char)*str))
return 0;
return 1;
}
char *frrstr_hex(char *buff, size_t bufsiz, const uint8_t *str, size_t num)
{
if (bufsiz == 0)
return buff;
char tmp[3];
buff[0] = '\0';
for (size_t i = 0; i < num; i++) {
snprintf(tmp, sizeof(tmp), "%02x", (unsigned char)str[i]);
strlcat(buff, tmp, bufsiz);
}
return buff;
}
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