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json: add json_tok_endswith and json_tok_startswith helpers.

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I wanted this for offers, and it's generally useful.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2020-11-25 10:48:44 +10:30
parent 3408f8f998
commit d9586bbde1
3 changed files with 42 additions and 25 deletions
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8
common/json.h
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@@ -26,6 +26,14 @@ int json_tok_full_len(const jsmntok_t *t);
/* Is this a string equal to str? */
bool json_tok_streq(const char *buffer, const jsmntok_t *tok, const char *str);
/* Does this string token start with prefix? */
bool json_tok_startswith(const char *buffer, const jsmntok_t *tok,
const char *prefix);
/* Does this string token end with suffix? */
bool json_tok_endswith(const char *buffer, const jsmntok_t *tok,
const char *suffix);
/* Allocate a tal string copy */
char *json_strdup(const tal_t *ctx, const char *buffer, const jsmntok_t *tok);