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A function to make a NUL-terminated copy of mg_str

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PUBLISHED_FROM=c1310b7d62f3ad6e2f24fea9f5229588c56b0bbe
This commit is contained in:
Deomid Ryabkov 2017-04-25 13:18:43 +03:00 committed by Cesanta Bot
parent 83fe5a17f3
commit a35e5bd966
2 changed files with 25 additions and 5 deletions
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22
mongoose.c
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@ -1389,19 +1389,31 @@ int mg_vcasecmp(const struct mg_str *str1, const char *str2) {
return r;
}
struct mg_str mg_strdup(const struct mg_str s) WEAK;
struct mg_str mg_strdup(const struct mg_str s) {
static struct mg_str mg_strdup_common(const struct mg_str s,
int nul_terminate) {
struct mg_str r = {NULL, 0};
if (s.len > 0 && s.p != NULL) {
r.p = (char *) MG_MALLOC(s.len);
if (r.p != NULL) {
memcpy((char *) r.p, s.p, s.len);
char *sc = (char *) MG_MALLOC(s.len + (nul_terminate ? 1 : 0));
if (sc != NULL) {
memcpy(sc, s.p, s.len);
if (nul_terminate) sc[s.len] = '\0';
r.p = sc;
r.len = s.len;
}
}
return r;
}
struct mg_str mg_strdup(const struct mg_str s) WEAK;
struct mg_str mg_strdup(const struct mg_str s) {
return mg_strdup_common(s, 1 /* NUL-terminate */);
}
struct mg_str mg_strdup_nul(const struct mg_str s) WEAK;
struct mg_str mg_strdup_nul(const struct mg_str s) {
return mg_strdup_common(s, 0 /* NUL-terminate */);
}
int mg_strcmp(const struct mg_str str1, const struct mg_str str2) WEAK;
int mg_strcmp(const struct mg_str str1, const struct mg_str str2) {
size_t i = 0;

8
mongoose.h
View File

@ -1789,7 +1789,15 @@ int mg_vcmp(const struct mg_str *str2, const char *str1);
*/
int mg_vcasecmp(const struct mg_str *str2, const char *str1);
/* Creates a copy of s (heap-allocated). */
struct mg_str mg_strdup(const struct mg_str s);
/*
* Creates a copy of s (heap-allocated).
* Resulting string is NUL-terminated (but NUL is not included in len).
*/
struct mg_str mg_strdup_nul(const struct mg_str s);
int mg_strcmp(const struct mg_str str1, const struct mg_str str2);
int mg_strncmp(const struct mg_str str1, const struct mg_str str2, size_t n);