From 91b57aa9a869bbc2a9247735a2306538ce2ffdbe Mon Sep 17 00:00:00 2001
From: Deomid Ryabkov <rojer@cesanta.com>
Date: Mon, 29 Oct 2018 14:42:32 +0000
Subject: [PATCH] Add MG_MK_STR_N() and mg_str_starts_with()
CL: Add MG_MK_STR_N() and mg_str_starts_with()
PUBLISHED_FROM=f01003efc6aa6ff45fa99c7ad6e5319f5002f22d
---
mongoose.c | 7 +++++++
mongoose.h | 5 +++++
2 files changed, 12 insertions(+)
diff --git a/mongoose.c b/mongoose.c
index 8b58d2e9d..7c4e691de 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -1770,6 +1770,13 @@ struct mg_str mg_strstrip(struct mg_str s) {
}
return s;
}
+
+int mg_str_starts_with(struct mg_str s, struct mg_str prefix) WEAK;
+int mg_str_starts_with(struct mg_str s, struct mg_str prefix) {
+ const struct mg_str sp = MG_MK_STR_N(s.p, prefix.len);
+ if (s.len < prefix.len) return 0;
+ return (mg_strcmp(sp, prefix) == 0);
+}
#ifdef MG_MODULE_LINES
#line 1 "common/str_util.c"
#endif
diff --git a/mongoose.h b/mongoose.h
index 8fe13cd60..4b5b0db62 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -2239,6 +2239,8 @@ struct mg_str mg_mk_str_n(const char *s, size_t len);
/* Macro for initializing mg_str. */
#define MG_MK_STR(str_literal) \
{ str_literal, sizeof(str_literal) - 1 }
+#define MG_MK_STR_N(str_literal, len) \
+ { str_literal, len }
#define MG_NULL_STR \
{ NULL, 0 }
@@ -2286,6 +2288,9 @@ const char *mg_strstr(const struct mg_str haystack, const struct mg_str needle);
/* Strip whitespace at the start and the end of s */
struct mg_str mg_strstrip(struct mg_str s);
+/* Returns 1 if s starts with the given prefix. */
+int mg_str_starts_with(struct mg_str s, struct mg_str prefix);
+
#ifdef __cplusplus
}
#endif
--
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