t/helper/test-hashmap.c: avoid using `strtok()`

Avoid using the non-reentrant `strtok()` to separate the parts of each incoming command. Instead of replacing it with `strtok_r()`, let's instead use the more friendly pair of `string_list_split_in_place()` and `string_list_remove_empty_items()`. Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Taylor Blau committed Apr 24, 2023 at 18:20 UTC 826f0e33ab0cbe976af02dd487303e4d1a0b3017
1 file changed +15 -7
t/helper/test-hashmap.c
+15 -7
@@ -2,6 +2,7 @@
2 #include "git-compat-util.h"
3 #include "hashmap.h"
4 #include "strbuf.h"
5 +#include "string-list.h"
6
7 struct test_entry
8 {
@@ -150,6 +151,7 @@ static void perf_hashmap(unsigned int method, unsigned int rounds)
151 */
152 int cmd__hashmap(int argc, const char **argv)
153 {
154 + struct string_list parts = STRING_LIST_INIT_NODUP;
155 struct strbuf line = STRBUF_INIT;
156 int icase;
157 struct hashmap map = HASHMAP_INIT(test_entry_cmp, &icase);
@@ -159,21 +161,26 @@ int cmd__hashmap(int argc, const char **argv)
161
162 /* process commands from stdin */
163 while (strbuf_getline(&line, stdin) != EOF) {
162 - char *cmd, *p1 = NULL, *p2 = NULL;
164 + char *cmd, *p1, *p2;
165 unsigned int hash = 0;
166 struct test_entry *entry;
167
168 /* break line into command and up to two parameters */
167 - cmd = strtok(line.buf, DELIM);
169 + string_list_setlen(&parts, 0);
170 + string_list_split_in_place(&parts, line.buf, DELIM, 2);
171 + string_list_remove_empty_items(&parts, 0);
172 +
173 /* ignore empty lines */
169 - if (!cmd || *cmd == '#')
174 + if (!parts.nr)
175 + continue;
176 + if (!*parts.items[0].string || *parts.items[0].string == '#')
177 continue;
178
172 - p1 = strtok(NULL, DELIM);
173 - if (p1) {
179 + cmd = parts.items[0].string;
180 + p1 = parts.nr >= 1 ? parts.items[1].string : NULL;
181 + p2 = parts.nr >= 2 ? parts.items[2].string : NULL;
182 + if (p1)
183 hash = icase ? strihash(p1) : strhash(p1);
175 - p2 = strtok(NULL, DELIM);
176 - }
184
185 if (!strcmp("add", cmd) && p1 && p2) {
186
@@ -260,6 +267,7 @@ int cmd__hashmap(int argc, const char **argv)
267 }
268 }
269
270 + string_list_clear(&parts, 0);
271 strbuf_release(&line);
272 hashmap_clear_and_free(&map, struct test_entry, ent);
273 return 0;