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#include "json.h"
#include "common.h"
struct JsonBuilder {
StrBuilder buf;
BOOL has_output_element[256];
int depth;
};
JsonBuilder* jsonbuilder_new() {
JsonBuilder* b = calloc(1, sizeof(JsonBuilder));
strbuilder_init(&b->buf);
return b;
}
const char* jsonbuilder_get_output(JsonBuilder* b) {
return b->buf.buf;
}
static void emit_comma_if_needed(JsonBuilder* b) {
if (b->has_output_element[b->depth - 1]) {
strbuilder_append_char(&b->buf, ',');
}
}
void jsonbuilder_object_start(JsonBuilder* b) {
strbuilder_append_char(&b->buf, '{');
b->has_output_element[b->depth++] = FALSE;
}
void jsonbuilder_object_end(JsonBuilder* b) {
b->depth--;
strbuilder_append_char(&b->buf, '}');
}
void jsonbuilder_object_member_start(JsonBuilder* b, const char* key) {
emit_comma_if_needed(b);
jsonbuilder_string(b, key);
strbuilder_append_char(&b->buf, ':');
}
void jsonbuilder_object_member_end(JsonBuilder* b) {
b->has_output_element[b->depth - 1] = TRUE;
}
void jsonbuilder_array_start(JsonBuilder* b) {
strbuilder_append_char(&b->buf, '[');
b->has_output_element[b->depth++] = FALSE;
}
void jsonbuilder_array_end(JsonBuilder* b) {
b->depth--;
strbuilder_append_char(&b->buf, ']');
}
void jsonbuilder_array_element_start(JsonBuilder* b) {
emit_comma_if_needed(b);
}
void jsonbuilder_array_element_end(JsonBuilder* b) {
b->has_output_element[b->depth - 1] = TRUE;
}
void jsonbuilder_null(JsonBuilder* b) {
strbuilder_append_string(&b->buf, "null");
}
void jsonbuilder_boolean(JsonBuilder* b, BOOL value) {
strbuilder_append_string(&b->buf, value ? "true" : "false");
}
void jsonbuilder_integer(JsonBuilder* b, int value) {
char buf[32];
sprintf(buf, "%d", value);
strbuilder_append_string(&b->buf, buf);
}
void jsonbuilder_string(JsonBuilder* b, const char* value) {
if (!value) {
jsonbuilder_null(b);
return;
}
strbuilder_append_char(&b->buf, '"');
for (const char* p = value; *p; p++) {
if (*p == '"') {
strbuilder_append_string(&b->buf, "\\\"");
} else if (*p == '\\') {
strbuilder_append_string(&b->buf, "\\\\");
} else if (*p == '\b') {
strbuilder_append_string(&b->buf, "\\b");
} else if (*p == '\f') {
strbuilder_append_string(&b->buf, "\\f");
} else if (*p == '\n') {
strbuilder_append_string(&b->buf, "\\n");
} else if (*p == '\r') {
strbuilder_append_string(&b->buf, "\\r");
} else if (*p == '\t') {
strbuilder_append_string(&b->buf, "\\t");
} else {
strbuilder_append_char(&b->buf, *p);
}
}
strbuilder_append_char(&b->buf, '"');
}
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