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json: add json_to_bool() helper.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2018-12-16 15:17:06 +10:30
parent 024b1a8d54
commit 465d5d5649
3 changed files with 21 additions and 11 deletions
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16
common/json.c
View file

@ -2,6 +2,7 @@
#include "json.h"
#include <assert.h>
#include <ccan/build_assert/build_assert.h>
#include <ccan/mem/mem.h>
#include <ccan/str/hex/hex.h>
#include <ccan/tal/str/str.h>
#include <common/utils.h>
@ -111,6 +112,21 @@ bool json_to_int(const char *buffer, const jsmntok_t *tok, int *num)
return true;
}
bool json_to_bool(const char *buffer, const jsmntok_t *tok, bool *b)
{
if (tok->type != JSMN_PRIMITIVE)
return false;
if (memeqstr(buffer + tok->start, tok->end - tok->start, "true")) {
*b = true;
return true;
}
if (memeqstr(buffer + tok->start, tok->end - tok->start, "false")) {
*b = false;
return true;
}
return false;
}
bool json_to_bitcoin_amount(const char *buffer, const jsmntok_t *tok,
uint64_t *satoshi)
{

3
common/json.h
View file

@ -40,6 +40,9 @@ bool json_to_double(const char *buffer, const jsmntok_t *tok, double *num);
/* Extract signed integer from this (may be a string, or a number literal) */
bool json_to_int(const char *buffer, const jsmntok_t *tok, int *num);
/* Extract boolean from this */
bool json_to_bool(const char *buffer, const jsmntok_t *tok, bool *b);
/* Extract satoshis from this (may be a string, or a decimal number literal) */
bool json_to_bitcoin_amount(const char *buffer, const jsmntok_t *tok,
uint64_t *satoshi);

13
common/json_tok.c
View file

@ -1,4 +1,3 @@
#include <ccan/mem/mem.h>
#include <ccan/str/hex/hex.h>
#include <ccan/tal/str/str.h>
#include <common/json_command.h>
@ -25,16 +24,8 @@ bool json_tok_bool(struct command *cmd, const char *name,
bool **b)
{
*b = tal(cmd, bool);
if (tok->type == JSMN_PRIMITIVE) {
if (memeqstr(buffer + tok->start, tok->end - tok->start, "true")) {
**b = true;
return true;
}
if (memeqstr(buffer + tok->start, tok->end - tok->start, "false")) {
**b = false;
return true;
}
}
if (json_to_bool(buffer, tok, *b))
return true;
command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"'%s' should be 'true' or 'false', not '%.*s'",
name, tok->end - tok->start, buffer + tok->start);