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py: Add native json printing using existing print framework.

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Also add start of ujson module with dumps implemented.  Enabled in unix
and stmhal ports.  Test passes on both.
This commit is contained in:
Damien George
2014-09-17 22:56:34 +01:00
parent 8a9b999f1c
commit 612045f53f
18 changed files with 227 additions and 15 deletions
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32
py/objstr.c
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@@ -92,9 +92,41 @@ void mp_str_print_quoted(void (*print)(void *env, const char *fmt, ...), void *e
print(env, "%c", quote_char);
}
#if MICROPY_PY_UJSON
STATIC void str_print_json(void (*print)(void *env, const char *fmt, ...), void *env, const byte *str_data, mp_uint_t str_len) {
print(env, "\"");
for (const byte *s = str_data, *top = str_data + str_len; s < top; s++) {
if (*s == '"' || *s == '\\' || *s == '/') {
print(env, "\\%c", *s);
} else if (32 <= *s && *s <= 126) {
print(env, "%c", *s);
} else if (*s == '\b') {
print(env, "\\b");
} else if (*s == '\f') {
print(env, "\\f");
} else if (*s == '\n') {
print(env, "\\n");
} else if (*s == '\r') {
print(env, "\\r");
} else if (*s == '\t') {
print(env, "\\t");
} else {
print(env, "\\u%04x", *s);
}
}
print(env, "\"");
}
#endif
STATIC void str_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in, mp_print_kind_t kind) {
GET_STR_DATA_LEN(self_in, str_data, str_len);
bool is_bytes = MP_OBJ_IS_TYPE(self_in, &mp_type_bytes);
#if MICROPY_PY_UJSON
if (kind == PRINT_JSON) {
str_print_json(print, env, str_data, str_len);
return;
}
#endif
if (kind == PRINT_STR && !is_bytes) {
print(env, "%.*s", str_len, str_data);
} else {