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-rw-r--r--lib/frrstr.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/lib/frrstr.c b/lib/frrstr.c
new file mode 100644
index 0000000..1b98b22
--- /dev/null
+++ b/lib/frrstr.c
@@ -0,0 +1,235 @@
+/*
+ * FRR string processing utilities.
+ * Copyright (C) 2018 Cumulus Networks, Inc.
+ * Quentin Young
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "zebra.h"
+
+#include <string.h>
+#include <ctype.h>
+#include <sys/types.h>
+#ifdef HAVE_LIBPCREPOSIX
+#include <pcreposix.h>
+#else
+#include <regex.h>
+#endif /* HAVE_LIBPCREPOSIX */
+
+#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(&copy, 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;
+}