void locfile_locate(struct locfile* l, location loc, const char* fmt, ...) {
va_list fmtargs;
va_start(fmtargs, fmt);
int startline;
int offset;
if (loc.start != -1) {
startline = locfile_get_line(l, loc.start);
offset = l->linemap[startline];
}
jv m1 = jv_string_vfmt(fmt, fmtargs);
if (!jv_is_valid(m1)) {
jq_report_error(l->jq, m1);
return;
}
if (loc.start == -1) {
jq_report_error(l->jq, jv_string_fmt("jq: error: %s\n<unknown location>", jv_string_value(m1)));
jv_free(m1);
return;
}
jv m2 = jv_string_fmt("%s\n%.*s%*s", jv_string_value(m1),
locfile_line_length(l, startline), l->data + offset,
loc.start - offset, "");
jv_free(m1);
jq_report_error(l->jq, m2);
return;
}
// assumes keys is a sorted array
jv jv_dels(jv t, jv keys) {
assert(jv_get_kind(keys) == JV_KIND_ARRAY);
assert(jv_is_valid(t));
if (jv_get_kind(t) == JV_KIND_NULL || jv_array_length(jv_copy(keys)) == 0) {
// no change
} else if (jv_get_kind(t) == JV_KIND_ARRAY) {
// extract slices, they must be handled differently
jv orig_keys = keys;
keys = jv_array();
jv new_array = jv_array();
jv starts = jv_array(), ends = jv_array();
jv_array_foreach(orig_keys, i, key) {
if (jv_get_kind(key) == JV_KIND_NUMBER) {
keys = jv_array_append(keys, key);
} else if (jv_get_kind(key) == JV_KIND_OBJECT) {
int start, end;
if (parse_slice(t, key, &start, &end)) {
starts = jv_array_append(starts, jv_number(start));
ends = jv_array_append(ends, jv_number(end));
} else {
jv_free(new_array);
jv_free(key);
new_array = jv_invalid_with_msg(jv_string_fmt("Start and end indices of an array slice must be numbers"));
goto arr_out;
}
} else {
jv_free(new_array);
new_array = jv_invalid_with_msg(jv_string_fmt("Cannot delete %s element of array",
jv_kind_name(jv_get_kind(key))));
jv_free(key);
goto arr_out;
}
}
int kidx = 0;
jv_array_foreach(t, i, elem) {
int del = 0;
while (kidx < jv_array_length(jv_copy(keys))) {
int delidx = (int)jv_number_value(jv_array_get(jv_copy(keys), kidx));
if (i == delidx) {
del = 1;
}
if (i < delidx) {
break;
}
kidx++;
}
for (int sidx=0; !del && sidx<jv_array_length(jv_copy(starts)); sidx++) {
if ((int)jv_number_value(jv_array_get(jv_copy(starts), sidx)) <= i &&
i < (int)jv_number_value(jv_array_get(jv_copy(ends), sidx))) {
del = 1;
}
}
if (!del)
new_array = jv_array_append(new_array, elem);
else
jv_free(elem);
}
jv jv_get(jv t, jv k) {
jv v;
if (jv_get_kind(t) == JV_KIND_OBJECT && jv_get_kind(k) == JV_KIND_STRING) {
v = jv_object_get(t, k);
if (!jv_is_valid(v)) {
jv_free(v);
v = jv_null();
}
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_NUMBER) {
if(jv_is_integer(k)){
v = jv_array_get(t, (int)jv_number_value(k));
if (!jv_is_valid(v)) {
jv_free(v);
v = jv_null();
}
} else {
jv_free(t);
jv_free(k);
v = jv_null();
}
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_OBJECT) {
int start, end;
if (parse_slice(t, k, &start, &end)) {
v = jv_array_slice(t, start, end);
} else {
v = jv_invalid_with_msg(jv_string_fmt("Start and end indices of an array slice must be numbers"));
jv_free(t);
}
} else if (jv_get_kind(t) == JV_KIND_STRING && jv_get_kind(k) == JV_KIND_OBJECT) {
int start, end;
if (parse_slice(t, k, &start, &end)) {
v = jv_string_slice(t, start, end);
} else {
v = jv_invalid_with_msg(jv_string_fmt("Start and end indices of an string slice must be numbers"));
jv_free(t);
}
} else if (jv_get_kind(t) == JV_KIND_STRING && jv_get_kind(k) == JV_KIND_STRING) {
v = jv_string_indexes(t, k);
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_ARRAY) {
v = jv_array_indexes(t, k);
} else if (jv_get_kind(t) == JV_KIND_NULL &&
(jv_get_kind(k) == JV_KIND_STRING ||
jv_get_kind(k) == JV_KIND_NUMBER ||
jv_get_kind(k) == JV_KIND_OBJECT)) {
jv_free(t);
jv_free(k);
v = jv_null();
} else {
v = jv_invalid_with_msg(jv_string_fmt("Cannot index %s with %s",
jv_kind_name(jv_get_kind(t)),
jv_kind_name(jv_get_kind(k))));
jv_free(t);
jv_free(k);
}
return v;
}
void locfile_locate(struct locfile* l, location loc, const char* fmt, ...) {
jq_err_cb cb;
void *cb_data;
va_list fmtargs;
va_start(fmtargs, fmt);
int startline;
int offset;
if (loc.start != -1) {
startline = locfile_get_line(l, loc.start);
offset = l->linemap[startline];
}
jq_get_error_cb(l->jq, &cb, &cb_data);
jv m1 = jv_string_vfmt(fmt, fmtargs);
if (!jv_is_valid(m1)) {
jv_free(m1);
goto enomem;
}
jv m2;
if (loc.start == -1) {
m2 = jv_string_fmt("%s\n<unknown location>", jv_string_value(m1));
if (cb)
cb(cb_data, m2);
else
fprintf(stderr, "%s", jv_string_value(m2));
jv_free(m1);
jv_free(m2);
return;
}
m2 = jv_string_fmt("%s\n%.*s%*s", jv_string_value(m1),
locfile_line_length(l, startline), l->data + offset,
loc.start - offset, "");
jv_free(m1);
if (!jv_is_valid(m2)) {
jv_free(m2);
goto enomem;
}
if (cb)
cb(cb_data, m2);
else
fprintf(stderr, "%s", jv_string_value(m2));
jv_free(m2);
return;
enomem:
if (cb != NULL)
cb(cb_data, jv_invalid());
else if (errno == ENOMEM || errno == 0)
fprintf(stderr, "Error formatting jq compilation error: %s", strerror(errno ? errno : ENOMEM));
else
fprintf(stderr, "Error formatting jq compilation error: %s", strerror(errno));
return;
}
jv jv_get(jv t, jv k) {
jv v;
if (jv_get_kind(t) == JV_KIND_OBJECT && jv_get_kind(k) == JV_KIND_STRING) {
v = jv_object_get(t, k);
if (!jv_is_valid(v)) {
jv_free(v);
v = jv_null();
}
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_NUMBER) {
// FIXME: don't do lookup for noninteger index
v = jv_array_get(t, (int)jv_number_value(k));
if (!jv_is_valid(v)) {
jv_free(v);
v = jv_null();
}
} else if (jv_get_kind(t) == JV_KIND_NULL &&
(jv_get_kind(k) == JV_KIND_STRING || jv_get_kind(k) == JV_KIND_NUMBER)) {
jv_free(t);
jv_free(k);
v = jv_null();
} else {
v = jv_invalid_with_msg(jv_string_fmt("Cannot index %s with %s",
jv_kind_name(jv_get_kind(t)),
jv_kind_name(jv_get_kind(k))));
jv_free(t);
jv_free(k);
}
return v;
}
jv jv_set(jv t, jv k, jv v) {
if (!jv_is_valid(v)) {
jv_free(t);
jv_free(k);
return v;
}
int isnull = jv_get_kind(t) == JV_KIND_NULL;
if (jv_get_kind(k) == JV_KIND_STRING &&
(jv_get_kind(t) == JV_KIND_OBJECT || isnull)) {
if (isnull) t = jv_object();
t = jv_object_set(t, k, v);
} else if (jv_get_kind(k) == JV_KIND_NUMBER &&
(jv_get_kind(t) == JV_KIND_ARRAY || isnull)) {
if (isnull) t = jv_array();
t = jv_array_set(t, (int)jv_number_value(k), v);
} else {
jv err = jv_invalid_with_msg(jv_string_fmt("Cannot update field at %s index of %s",
jv_kind_name(jv_get_kind(t)),
jv_kind_name(jv_get_kind(v))));
jv_free(t);
jv_free(k);
jv_free(v);
t = err;
}
return t;
}
static void f_minus(jv input[], jv output[]) {
jv_free(input[0]);
jv a = input[2];
jv b = input[1];
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
output[0] = jv_number(jv_number_value(a) - jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_ARRAY && jv_get_kind(b) == JV_KIND_ARRAY) {
jv out = jv_array();
for (int i=0; i<jv_array_length(jv_copy(a)); i++) {
jv x = jv_array_get(jv_copy(a), i);
int include = 1;
for (int j=0; j<jv_array_length(jv_copy(b)); j++) {
if (jv_equal(jv_copy(x), jv_array_get(jv_copy(b), j))) {
include = 0;
break;
}
}
if (include)
out = jv_array_append(out, jv_copy(x));
jv_free(x);
}
jv_free(a);
jv_free(b);
output[0] = out;
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Attempted to subtract %s and %s",
jv_kind_name(jv_get_kind(a)),
jv_kind_name(jv_get_kind(b))));
jv_free(a);
jv_free(b);
}
}
jv jv_has(jv t, jv k) {
assert(jv_is_valid(t));
assert(jv_is_valid(k));
jv ret;
if (jv_get_kind(t) == JV_KIND_NULL) {
jv_free(t);
jv_free(k);
ret = jv_false();
} else if (jv_get_kind(t) == JV_KIND_OBJECT &&
jv_get_kind(k) == JV_KIND_STRING) {
jv elem = jv_object_get(t, k);
ret = jv_bool(jv_is_valid(elem));
jv_free(elem);
} else if (jv_get_kind(t) == JV_KIND_ARRAY &&
jv_get_kind(k) == JV_KIND_NUMBER) {
jv elem = jv_array_get(t, (int)jv_number_value(k));
ret = jv_bool(jv_is_valid(elem));
jv_free(elem);
} else {
ret = jv_invalid_with_msg(jv_string_fmt("Cannot check whether %s has a %s key",
jv_kind_name(jv_get_kind(t)),
jv_kind_name(jv_get_kind(k))));
jv_free(t);
jv_free(k);
}
return ret;
}
jv jv_parser_next(struct jv_parser* p) {
assert(p->curr_buf && "a buffer must be provided");
if (p->bom_strip_position == 0xff) return jv_invalid_with_msg(jv_string("Malformed BOM"));
jv value;
presult msg = 0;
while (!msg && p->curr_buf_pos < p->curr_buf_length) {
char ch = p->curr_buf[p->curr_buf_pos++];
msg = scan(p, ch, &value);
}
if (msg == OK) {
return value;
} else if (msg) {
return jv_invalid_with_msg(jv_string_fmt("%s at line %d, column %d", msg, p->line, p->column));
} else if (p->curr_buf_is_partial) {
assert(p->curr_buf_pos == p->curr_buf_length);
// need another buffer
return jv_invalid();
} else {
assert(p->curr_buf_pos == p->curr_buf_length);
// at EOF
if (p->st != JV_PARSER_NORMAL)
return jv_invalid_with_msg(jv_string("Unfinished string"));
if ((msg = check_literal(p)))
return jv_invalid_with_msg(jv_string(msg));
if (p->stackpos != 0)
return jv_invalid_with_msg(jv_string("Unfinished JSON term"));
// p->next is either invalid (nothing here but no syntax error)
// or valid (this is the value). either way it's the thing to return
value = p->next;
p->next = jv_invalid();
return value;
}
}
static jv type_error(jv bad, const char* msg) {
jv err = jv_invalid_with_msg(jv_string_fmt("%s %s",
jv_kind_name(jv_get_kind(bad)),
msg));
jv_free(bad);
return err;
}
static void print_error(jq_state *jq, jv value) {
assert(!jv_is_valid(value));
jv msg = jv_invalid_get_msg(value);
jv msg2;
if (jv_get_kind(msg) == JV_KIND_STRING)
msg2 = jv_string_fmt("jq: error: %s", jv_string_value(msg));
else
msg2 = jv_string_fmt("jq: error: <unknown>");
jv_free(msg);
if (jq->err_cb)
jq->err_cb(jq->err_cb_data, msg2);
else if (jv_get_kind(msg2) == JV_KIND_STRING)
fprintf(stderr, "%s\n", jv_string_value(msg2));
else
fprintf(stderr, "jq: error: %s\n", strerror(ENOMEM));
jv_free(msg2);
}
static jv type_error(jv bad, const char* msg) {
char errbuf[15];
jv err = jv_invalid_with_msg(jv_string_fmt("%s (%s) %s",
jv_kind_name(jv_get_kind(bad)),
jv_dump_string_trunc(jv_copy(bad), errbuf, sizeof(errbuf)),
msg));
jv_free(bad);
return err;
}
static jv type_error2(jv bad1, jv bad2, const char* msg) {
char errbuf1[15],errbuf2[15];
jv err = jv_invalid_with_msg(jv_string_fmt("%s (%s) and %s (%s) %s",
jv_kind_name(jv_get_kind(bad1)),
jv_dump_string_trunc(jv_copy(bad1), errbuf1, sizeof(errbuf1)),
jv_kind_name(jv_get_kind(bad2)),
jv_dump_string_trunc(jv_copy(bad2), errbuf2, sizeof(errbuf2)),
msg));
jv_free(bad1);
jv_free(bad2);
return err;
}
static jv slurp_file(const char* filename) {
FILE* file = fopen(filename, "r");
if (!file) {
return jv_invalid_with_msg(jv_string_fmt("Could not open %s: %s",
filename,
strerror(errno)));
}
jv data = jv_string("");
while (!feof(file) && !ferror(file)) {
char buf[4096];
size_t n = fread(buf, 1, sizeof(buf), file);
data = jv_string_concat(data, jv_string_sized(buf, (int)n));
}
int badread = ferror(file);
fclose(file);
if (badread) {
jv_free(data);
return jv_invalid_with_msg(jv_string_fmt("Error reading from %s",
filename));
}
return data;
}
static void f_length(jv input[], jv output[]) {
if (jv_get_kind(input[0]) == JV_KIND_ARRAY) {
output[0] = jv_number(jv_array_length(input[0]));
} else if (jv_get_kind(input[0]) == JV_KIND_OBJECT) {
output[0] = jv_number(jv_object_length(input[0]));
} else if (jv_get_kind(input[0]) == JV_KIND_STRING) {
output[0] = jv_number(jv_string_length(input[0]));
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Cannot get the length of %s",
jv_kind_name(jv_get_kind(input[0]))));
jv_free(input[0]);
}
}
static void f_contains(jv input[], jv output[]) {
jv_free(input[0]);
jv a = input[2];
jv b = input[1];
jv_kind akind = jv_get_kind(a);
if (akind == jv_get_kind(b)) {
output[0] = jv_bool(jv_contains(a, b));
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Can only check containment of values of the same type."));
jv_free(a);
jv_free(b);
}
}
static void f_divide(jv input[], jv output[]) {
jv_free(input[0]);
jv a = input[2];
jv b = input[1];
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
output[0] = jv_number(jv_number_value(a) / jv_number_value(b));
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Attempted to divide %s by %s",
jv_kind_name(jv_get_kind(a)),
jv_kind_name(jv_get_kind(b))));
jv_free(a);
jv_free(b);
}
}
static void f_tonumber(jv input[], jv output[]) {
if (jv_get_kind(input[0]) == JV_KIND_NUMBER) {
output[0] = input[0];
} else if (jv_get_kind(input[0]) == JV_KIND_STRING) {
jv parsed = jv_parse(jv_string_value(input[0]));
if (!jv_is_valid(parsed)) {
jv_free(input[0]);
output[0] = parsed;
} else if (jv_get_kind(parsed) != JV_KIND_NUMBER) {
output[0] = jv_invalid_with_msg(jv_string_fmt("'%s' is not a number",
jv_string_value(input[0])));
jv_free(input[0]);
} else {
jv_free(input[0]);
output[0] = parsed;
}
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Cannot parse %s as a number",
jv_kind_name(jv_get_kind(input[0]))));
jv_free(input[0]);
return;
}
}
static void f_add(jv input[], jv output[]) {
jv array = input[0];
if (jv_get_kind(array) != JV_KIND_ARRAY) {
output[0] = jv_invalid_with_msg(jv_string_fmt("Cannot add elements of an %s",
jv_kind_name(jv_get_kind(array))));
} else if (jv_array_length(jv_copy(array)) == 0) {
output[0] = jv_null();
} else {
jv sum = jv_array_get(jv_copy(array), 0);
for (int i = 1; i < jv_array_length(jv_copy(array)); i++) {
jv x = jv_array_get(jv_copy(array), i);
jv add_args[] = {jv_null(), x, sum};
f_plus(add_args, &sum);
}
output[0] = sum;
}
jv_free(array);
}
static void order_cmp(jv input[], jv output[], int op) {
jv_free(input[0]);
jv a = input[2];
jv b = input[1];
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
double da = jv_number_value(a);
double db = jv_number_value(b);
output[0] = jv_bool((op == CMP_OP_LESS && da < db) ||
(op == CMP_OP_LESSEQ && da <= db) ||
(op == CMP_OP_GREATEREQ && da >= db) ||
(op == CMP_OP_GREATER && da > db));
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Attempted to compare order of %s wrt %s",
jv_kind_name(jv_get_kind(a)),
jv_kind_name(jv_get_kind(b))));
jv_free(a);
jv_free(b);
}
}
int jq_compile_args(jq_state *jq, const char* str, jv args) {
jv_nomem_handler(jq->nomem_handler, jq->nomem_handler_data);
assert(jv_get_kind(args) == JV_KIND_ARRAY);
struct locfile locations;
locfile_init(&locations, jq, str, strlen(str));
block program;
jq_reset(jq);
if (jq->bc) {
bytecode_free(jq->bc);
jq->bc = 0;
}
int nerrors = jq_parse(&locations, &program);
if (nerrors == 0) {
int i;
for (i=0; i<jv_array_length(jv_copy(args)); i++) {
jv arg = jv_array_get(jv_copy(args), i);
jv name = jv_object_get(jv_copy(arg), jv_string("name"));
jv value = jv_object_get(arg, jv_string("value"));
program = gen_var_binding(gen_const(value), jv_string_value(name), program);
jv_free(name);
}
nerrors = builtins_bind(jq, &program);
if (nerrors == 0) {
nerrors = block_compile(program, &locations, &jq->bc);
}
}
jv_free(args);
if (nerrors) {
jv s = jv_string_fmt("%d compile %s", nerrors,
nerrors > 1 ? "errors" : "error");
if (jq->err_cb != NULL)
jq->err_cb(jq->err_cb_data, s);
else if (!jv_is_valid(s))
fprintf(stderr, "Error formatting jq compilation errors: %s\n", strerror(errno));
else
fprintf(stderr, "%s\n", jv_string_value(s));
jv_free(s);
}
locfile_free(&locations);
return jq->bc != NULL;
}
static void f_plus(jv input[], jv output[]) {
jv_free(input[0]);
jv a = input[2];
jv b = input[1];
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
output[0] = jv_number(jv_number_value(a) +
jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_STRING && jv_get_kind(b) == JV_KIND_STRING) {
output[0] = jv_string_concat(a, b);
} else if (jv_get_kind(a) == JV_KIND_ARRAY && jv_get_kind(b) == JV_KIND_ARRAY) {
output[0] = jv_array_concat(a, b);
} else if (jv_get_kind(a) == JV_KIND_OBJECT && jv_get_kind(b) == JV_KIND_OBJECT) {
output[0] = jv_object_merge(a, b);
} else {
output[0] = jv_invalid_with_msg(jv_string_fmt("Attempted to add %s and %s",
jv_kind_name(jv_get_kind(a)),
jv_kind_name(jv_get_kind(b))));
jv_free(a);
jv_free(b);
}
}
jv jv_parse_sized(const char* string, int length) {
struct jv_parser parser;
parser_init(&parser);
jv_parser_set_buf(&parser, string, length, 0);
jv value = jv_parser_next(&parser);
if (jv_is_valid(value)) {
jv next = jv_parser_next(&parser);
if (jv_is_valid(next)) {
// multiple JSON values, we only wanted one
jv_free(value);
jv_free(next);
value = jv_invalid_with_msg(jv_string("Unexpected extra JSON values"));
} else if (jv_invalid_has_msg(jv_copy(next))) {
// parser error after the first JSON value
jv_free(value);
value = next;
} else {
// a single valid JSON value
jv_free(next);
}
} else if (jv_invalid_has_msg(jv_copy(value))) {
// parse error, we'll return it
} else {
// no value at all
jv_free(value);
value = jv_invalid_with_msg(jv_string("Expected JSON value"));
}
parser_free(&parser);
if (!jv_is_valid(value) && jv_invalid_has_msg(jv_copy(value))) {
jv msg = jv_invalid_get_msg(value);
value = jv_invalid_with_msg(jv_string_fmt("%s (while parsing '%s')",
jv_string_value(msg),
string));
jv_free(msg);
}
return value;
}
// assumes keys is a sorted array
jv jv_dels(jv t, jv keys) {
assert(jv_get_kind(keys) == JV_KIND_ARRAY);
assert(jv_is_valid(t));
if (jv_get_kind(t) == JV_KIND_NULL || jv_array_length(jv_copy(keys)) == 0) {
// no change
} else if (jv_get_kind(t) == JV_KIND_ARRAY) {
jv new_array = jv_array();
int kidx = 0;
jv_array_foreach(t, i, elem) {
int del = 0;
while (kidx < jv_array_length(jv_copy(keys))) {
jv nextdel = jv_array_get(jv_copy(keys), kidx);
if (jv_get_kind(nextdel) != JV_KIND_NUMBER) {
jv err = jv_invalid_with_msg(jv_string_fmt("Cannot delete %s element of array",
jv_kind_name(jv_get_kind(nextdel))));
jv_free(nextdel);
jv_free(new_array);
jv_free(elem);
new_array = err;
goto arr_out; // break twice
}
int delidx = (int)jv_number_value(nextdel);
jv_free(nextdel);
if (i == delidx) {
del = 1;
}
if (i < delidx) {
break;
}
kidx++;
}
if (!del)
new_array = jv_array_append(new_array, elem);
else
jv_free(elem);
}
jv jv_get(jv t, jv k) {
jv v;
if (jv_get_kind(t) == JV_KIND_OBJECT && jv_get_kind(k) == JV_KIND_STRING) {
v = jv_object_get(t, k);
if (!jv_is_valid(v)) {
jv_free(v);
v = jv_null();
}
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_NUMBER) {
if(jv_is_integer(k)){
int idx = (int)jv_number_value(k);
if (idx < 0)
idx += jv_array_length(jv_copy(t));
v = jv_array_get(t, idx);
if (!jv_is_valid(v)) {
jv_free(v);
v = jv_null();
}
} else {
jv_free(t);
jv_free(k);
v = jv_null();
}
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_OBJECT) {
int start, end;
if (parse_slice(t, k, &start, &end)) {
v = jv_array_slice(t, start, end);
} else {
v = jv_invalid_with_msg(jv_string_fmt("Start and end indices of an array slice must be numbers"));
jv_free(t);
}
} else if (jv_get_kind(t) == JV_KIND_STRING && jv_get_kind(k) == JV_KIND_OBJECT) {
int start, end;
if (parse_slice(t, k, &start, &end)) {
v = jv_string_slice(t, start, end);
} else {
v = jv_invalid_with_msg(jv_string_fmt("Start and end indices of an string slice must be numbers"));
jv_free(t);
}
} else if (jv_get_kind(t) == JV_KIND_STRING && jv_get_kind(k) == JV_KIND_STRING) {
v = jv_string_indexes(t, k);
} else if (jv_get_kind(t) == JV_KIND_ARRAY && jv_get_kind(k) == JV_KIND_ARRAY) {
v = jv_array_indexes(t, k);
} else if (jv_get_kind(t) == JV_KIND_NULL &&
(jv_get_kind(k) == JV_KIND_STRING ||
jv_get_kind(k) == JV_KIND_NUMBER ||
jv_get_kind(k) == JV_KIND_OBJECT)) {
jv_free(t);
jv_free(k);
v = jv_null();
} else {
/*
* If k is a short string it's probably from a jq .foo expression or
* similar, in which case putting it in the invalid msg may help the
* user. The length 30 is arbitrary.
*/
if (jv_get_kind(k) == JV_KIND_STRING && jv_string_length_bytes(jv_copy(k)) < 30) {
v = jv_invalid_with_msg(jv_string_fmt("Cannot index %s with string \"%s\"",
jv_kind_name(jv_get_kind(t)),
jv_string_value(k)));
} else {
v = jv_invalid_with_msg(jv_string_fmt("Cannot index %s with %s",
jv_kind_name(jv_get_kind(t)),
jv_kind_name(jv_get_kind(k))));
}
jv_free(t);
jv_free(k);
}
return v;
}
static void jv_test() {
/// Arrays and numbers
{
jv a = jv_array();
assert(jv_get_kind(a) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(a)) == 0);
assert(jv_array_length(jv_copy(a)) == 0);
a = jv_array_append(a, jv_number(42));
assert(jv_array_length(jv_copy(a)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(a), 0)) == 42);
jv a2 = jv_array_append(jv_array(), jv_number(42));
assert(jv_equal(jv_copy(a), jv_copy(a)));
assert(jv_equal(jv_copy(a2), jv_copy(a2)));
assert(jv_equal(jv_copy(a), jv_copy(a2)));
assert(jv_equal(jv_copy(a2), jv_copy(a)));
jv_free(a2);
a2 = jv_array_append(jv_array(), jv_number(19));
assert(!jv_equal(jv_copy(a), jv_copy(a2)));
assert(!jv_equal(jv_copy(a2), jv_copy(a)));
jv_free(a2);
assert(a.val.nontrivial.ptr->count == 1);
a = jv_array_append(a, jv_copy(a));
assert(a.val.nontrivial.ptr->count == 1);
assert(jv_array_length(jv_copy(a)) == 2);
assert(jv_number_value(jv_array_get(jv_copy(a), 0)) == 42);
for (int i=0; i<10; i++) {
jv subarray = jv_array_get(jv_copy(a), 1);
assert(jv_get_kind(subarray) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(subarray)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(subarray), 0)) == 42);
jv_free(subarray);
}
jv subarray = jv_array_get(jv_copy(a), 1);
assert(jv_get_kind(subarray) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(subarray)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(subarray), 0)) == 42);
jv sub2 = jv_copy(subarray);
sub2 = jv_array_append(sub2, jv_number(19));
assert(jv_get_kind(sub2) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(sub2)) == 2);
assert(jv_number_value(jv_array_get(jv_copy(sub2), 0)) == 42);
assert(jv_number_value(jv_array_get(jv_copy(sub2), 1)) == 19);
assert(jv_get_kind(subarray) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(subarray)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(subarray), 0)) == 42);
jv_free(subarray);
void* before = sub2.val.nontrivial.ptr;
sub2 = jv_array_append(sub2, jv_number(200));
void* after = sub2.val.nontrivial.ptr;
assert(before == after);
jv_free(sub2);
jv a3 = jv_array_append(jv_copy(a), jv_number(19));
assert(jv_array_length(jv_copy(a3)) == 3);
assert(jv_number_value(jv_array_get(jv_copy(a3), 0)) == 42);
assert(jv_array_length(jv_array_get(jv_copy(a3), 1)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(a3), 2)) == 19);
jv_free(a3);
jv a4 = jv_array();
a4 = jv_array_append(a4, jv_number(1));
a4 = jv_array_append(a4, jv_number(2));
jv a5 = jv_copy(a4);
a4 = jv_array_append(a4, jv_number(3));
a4 = jv_array_slice(a4, 0, 1);
assert(jv_array_length(jv_copy(a4)) == 1);
a4 = jv_array_append(a4, jv_number(4));
assert(jv_array_length(a4) == 2);
assert(jv_array_length(a5) == 2);
assert(jv_array_length(jv_copy(a)) == 2);
assert(jv_number_value(jv_array_get(jv_copy(a), 0)) == 42);
assert(jv_array_length(jv_array_get(jv_copy(a), 1)) == 1);
jv_dump(jv_copy(a), 0); printf("\n");
jv_free(a);
}
/// Strings
{
assert(jv_equal(jv_string("foo"), jv_string_sized("foo", 3)));
char nasty[] = "foo\0";
jv shortstr = jv_string(nasty), longstr = jv_string_sized(nasty, sizeof(nasty));
assert(jv_string_length_bytes(shortstr) == (int)strlen(nasty));
assert(jv_string_length_bytes(longstr) == (int)sizeof(nasty));
char a1s[] = "hello", a2s[] = "hello", bs[] = "goodbye";
jv a1 = jv_string(a1s), a2 = jv_string(a2s), b = jv_string(bs);
assert(jv_equal(jv_copy(a1), jv_copy(a2)));
assert(jv_equal(jv_copy(a2), jv_copy(a1)));
assert(!jv_equal(jv_copy(a1), jv_copy(b)));
assert(jv_string_hash(jv_copy(a1)) == jv_string_hash(jv_copy(a1)));
assert(jv_string_hash(jv_copy(a1)) == jv_string_hash(jv_copy(a2)));
assert(jv_string_hash(jv_copy(b)) != jv_string_hash(jv_copy(a1)));
jv_free(a1);
jv_free(a2);
jv_free(b);
assert(jv_equal(jv_string("hello42!"), jv_string_fmt("hello%d%s", 42, "!")));
char big[20000];
for (int i=0; i<(int)sizeof(big); i++) big[i] = 'a';
big[sizeof(big)-1] = 0;
jv str = jv_string_fmt("%s", big);
assert(jv_string_length_bytes(jv_copy(str)) == sizeof(big) - 1);
assert(!strcmp(big, jv_string_value(str)));
jv_free(str);
}
/// Objects
{
jv o1 = jv_object();
o1 = jv_object_set(o1, jv_string("foo"), jv_number(42));
o1 = jv_object_set(o1, jv_string("bar"), jv_number(24));
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("foo"))) == 42);
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("bar"))) == 24);
jv o2 = jv_object_set(jv_copy(o1), jv_string("foo"), jv_number(420));
o2 = jv_object_set(o2, jv_string("bar"), jv_number(240));
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("foo"))) == 42);
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("bar"))) == 24);
assert(jv_number_value(jv_object_get(jv_copy(o2), jv_string("foo"))) == 420);
jv_free(o1);
assert(jv_number_value(jv_object_get(jv_copy(o2), jv_string("bar"))) == 240);
jv_dump(jv_copy(o2), 0); printf("\n");
jv_free(o2);
}
}
jv jv_set(jv t, jv k, jv v) {
if (!jv_is_valid(v)) {
jv_free(t);
jv_free(k);
return v;
}
int isnull = jv_get_kind(t) == JV_KIND_NULL;
if (jv_get_kind(k) == JV_KIND_STRING &&
(jv_get_kind(t) == JV_KIND_OBJECT || isnull)) {
if (isnull) t = jv_object();
t = jv_object_set(t, k, v);
} else if (jv_get_kind(k) == JV_KIND_NUMBER &&
(jv_get_kind(t) == JV_KIND_ARRAY || isnull)) {
if (isnull) t = jv_array();
t = jv_array_set(t, (int)jv_number_value(k), v);
} else if (jv_get_kind(k) == JV_KIND_OBJECT &&
(jv_get_kind(t) == JV_KIND_ARRAY || isnull)) {
if (isnull) t = jv_array();
int start, end;
if (parse_slice(t, k, &start, &end)) {
if (jv_get_kind(v) == JV_KIND_ARRAY) {
int array_len = jv_array_length(jv_copy(t));
assert(0 <= start && start <= end && end <= array_len);
int slice_len = end - start;
int insert_len = jv_array_length(jv_copy(v));
if (slice_len < insert_len) {
// array is growing
int shift = insert_len - slice_len;
for (int i = array_len - 1; i >= end; i--) {
t = jv_array_set(t, i + shift, jv_array_get(jv_copy(t), i));
}
} else if (slice_len > insert_len) {
// array is shrinking
int shift = slice_len - insert_len;
for (int i = end; i < array_len; i++) {
t = jv_array_set(t, i - shift, jv_array_get(jv_copy(t), i));
}
t = jv_array_slice(t, 0, array_len - shift);
}
for (int i=0; i < insert_len; i++) {
t = jv_array_set(t, start + i, jv_array_get(jv_copy(v), i));
}
jv_free(v);
} else {
jv_free(t);
jv_free(v);
t = jv_invalid_with_msg(jv_string_fmt("A slice of an array can only be assigned another array"));
}
} else {
jv_free(t);
jv_free(k);
jv_free(v);
t = jv_invalid_with_msg(jv_string_fmt("Start and end indices of an array slice must be numbers"));
}
} else {
jv err = jv_invalid_with_msg(jv_string_fmt("Cannot update field at %s index of %s",
jv_kind_name(jv_get_kind(k)),
jv_kind_name(jv_get_kind(t))));
jv_free(t);
jv_free(k);
jv_free(v);
t = err;
}
return t;
}
int main(int argc, char* argv[]) {
jq_state *jq = NULL;
int ret = 0;
int compiled = 0;
int parser_flags = 0;
int nfiles = 0;
int badwrite;
jv program_arguments = jv_array();
#ifdef WIN32
SetConsoleOutputCP(CP_UTF8);
fflush(stdout);
fflush(stderr);
_setmode(fileno(stdout), _O_TEXT | _O_U8TEXT);
_setmode(fileno(stderr), _O_TEXT | _O_U8TEXT);
int wargc;
wchar_t **wargv = CommandLineToArgvW(GetCommandLineW(), &wargc);
assert(wargc == argc);
size_t arg_sz;
for (int i = 0; i < argc; i++) {
argv[i] = alloca((arg_sz = WideCharToMultiByte(CP_UTF8,
0,
wargv[i],
-1, 0, 0, 0, 0)));
WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1, argv[i], arg_sz, 0, 0);
}
#endif
if (argc) progname = argv[0];
jq = jq_init();
if (jq == NULL) {
perror("malloc");
ret = 2;
goto out;
}
int dumpopts = JV_PRINT_INDENT_FLAGS(2);
const char* program = 0;
jv_extra_opt extra_opt;
extra_opt.array_fold=0;
extra_opt.array_fold_indent=1;
jq_util_input_state *input_state = jq_util_input_init(NULL, NULL); // XXX add err_cb
int further_args_are_files = 0;
int jq_flags = 0;
size_t short_opts = 0;
jv lib_search_paths = jv_null();
for (int i=1; i<argc; i++, short_opts = 0) {
if (further_args_are_files) {
jq_util_input_add_input(input_state, argv[i]);
nfiles++;
} else if (!strcmp(argv[i], "--")) {
if (!program) usage(2);
further_args_are_files = 1;
} else if (!isoptish(argv[i])) {
if (program) {
jq_util_input_add_input(input_state, argv[i]);
nfiles++;
} else {
program = argv[i];
}
} else {
if (argv[i][1] == 'L') {
if (jv_get_kind(lib_search_paths) == JV_KIND_NULL)
lib_search_paths = jv_array();
if (argv[i][2] != 0) { // -Lname (faster check than strlen)
lib_search_paths = jv_array_append(lib_search_paths, jq_realpath(jv_string(argv[i]+2)));
} else if (i >= argc - 1) {
fprintf(stderr, "-L takes a parameter: (e.g. -L /search/path or -L/search/path)\n");
die();
} else {
lib_search_paths = jv_array_append(lib_search_paths, jq_realpath(jv_string(argv[i+1])));
i++;
}
continue;
}
if (isoption(argv[i], 0, "fold", &short_opts)) {
if (i >= argc - 1) {
fprintf(stderr, "%s: --fold takes one parameter\n", progname);
die();
}
extra_opt.array_fold = atoi(argv[i+1]);
if (extra_opt.array_fold < 1 || extra_opt.array_fold > 255) {
fprintf(stderr, "%s: --fold takes a number between 1 and 255\n", progname);
die();
}
i++;
if (!short_opts) continue;
}
if (isoption(argv[i], 's', "slurp", &short_opts)) {
options |= SLURP;
if (!short_opts) continue;
}
if (isoption(argv[i], 'r', "raw-output", &short_opts)) {
options |= RAW_OUTPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 'c', "compact-output", &short_opts)) {
dumpopts &= ~(JV_PRINT_TAB | JV_PRINT_INDENT_FLAGS(7));
if (!short_opts) continue;
}
if (isoption(argv[i], 'C', "color-output", &short_opts)) {
options |= COLOR_OUTPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 'M', "monochrome-output", &short_opts)) {
options |= NO_COLOR_OUTPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 'a', "ascii-output", &short_opts)) {
options |= ASCII_OUTPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "unbuffered", &short_opts)) {
options |= UNBUFFERED_OUTPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 'S', "sort-keys", &short_opts)) {
options |= SORTED_OUTPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 'R', "raw-input", &short_opts)) {
options |= RAW_INPUT;
if (!short_opts) continue;
}
if (isoption(argv[i], 'n', "null-input", &short_opts)) {
options |= PROVIDE_NULL;
if (!short_opts) continue;
}
if (isoption(argv[i], 'f', "from-file", &short_opts)) {
options |= FROM_FILE;
if (!short_opts) continue;
}
if (isoption(argv[i], 'j', "join-output", &short_opts)) {
options |= RAW_OUTPUT | RAW_NO_LF;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "tab", &short_opts)) {
dumpopts &= ~JV_PRINT_INDENT_FLAGS(7);
dumpopts |= JV_PRINT_TAB | JV_PRINT_PRETTY;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "indent", &short_opts)) {
if (i >= argc - 1) {
fprintf(stderr, "%s: --indent takes one parameter\n", progname);
die();
}
dumpopts &= ~(JV_PRINT_TAB | JV_PRINT_INDENT_FLAGS(7));
int indent = atoi(argv[i+1]);
if (indent < -1 || indent > 7) {
fprintf(stderr, "%s: --indent takes a number between -1 and 7\n", progname);
die();
}
dumpopts |= JV_PRINT_INDENT_FLAGS(indent);
i++;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "seq", &short_opts)) {
options |= SEQ;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "stream", &short_opts)) {
parser_flags |= JV_PARSE_STREAMING;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "stream-errors", &short_opts)) {
parser_flags |= JV_PARSE_STREAM_ERRORS;
if (!short_opts) continue;
}
if (isoption(argv[i], 'e', "exit-status", &short_opts)) {
options |= EXIT_STATUS;
if (!short_opts) continue;
}
// FIXME: For --arg* we should check that the varname is acceptable
if (isoption(argv[i], 0, "arg", &short_opts)) {
if (i >= argc - 2) {
fprintf(stderr, "%s: --arg takes two parameters (e.g. --arg varname value)\n", progname);
die();
}
jv arg = jv_object();
arg = jv_object_set(arg, jv_string("name"), jv_string(argv[i+1]));
arg = jv_object_set(arg, jv_string("value"), jv_string(argv[i+2]));
program_arguments = jv_array_append(program_arguments, arg);
i += 2; // skip the next two arguments
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "argjson", &short_opts)) {
if (i >= argc - 2) {
fprintf(stderr, "%s: --argjson takes two parameters (e.g. --argjson varname text)\n", progname);
die();
}
jv v = jv_parse(argv[i+2]);
if (!jv_is_valid(v)) {
fprintf(stderr, "%s: invalid JSON text passed to --argjson\n", progname);
die();
}
jv arg = jv_object();
arg = jv_object_set(arg, jv_string("name"), jv_string(argv[i+1]));
arg = jv_object_set(arg, jv_string("value"), v);
program_arguments = jv_array_append(program_arguments, arg);
i += 2; // skip the next two arguments
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "argfile", &short_opts) ||
isoption(argv[i], 0, "slurpfile", &short_opts)) {
const char *which;
if (isoption(argv[i], 0, "argfile", &short_opts))
which = "argfile";
else
which = "slurpfile";
if (i >= argc - 2) {
fprintf(stderr, "%s: --%s takes two parameters (e.g. --%s varname filename)\n", progname, which, which);
die();
}
jv arg = jv_object();
arg = jv_object_set(arg, jv_string("name"), jv_string(argv[i+1]));
jv data = jv_load_file(argv[i+2], 0);
if (!jv_is_valid(data)) {
data = jv_invalid_get_msg(data);
fprintf(stderr, "%s: Bad JSON in --%s %s %s: %s\n", progname, which,
argv[i+1], argv[i+2], jv_string_value(data));
jv_free(data);
jv_free(arg);
ret = 2;
goto out;
}
if (isoption(argv[i], 0, "argfile", &short_opts) &&
jv_get_kind(data) == JV_KIND_ARRAY && jv_array_length(jv_copy(data)) == 1)
data = jv_array_get(data, 0);
arg = jv_object_set(arg, jv_string("value"), data);
program_arguments = jv_array_append(program_arguments, arg);
i += 2; // skip the next two arguments
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "debug-dump-disasm", &short_opts)) {
options |= DUMP_DISASM;
if (!short_opts) continue;
}
if (isoption(argv[i], 0, "debug-trace", &short_opts)) {
jq_flags |= JQ_DEBUG_TRACE;
if (!short_opts) continue;
}
if (isoption(argv[i], 'h', "help", &short_opts)) {
usage(0);
if (!short_opts) continue;
}
if (isoption(argv[i], 'V', "version", &short_opts)) {
printf("jq-%s\n", JQ_VERSION);
ret = 0;
goto out;
}
if (isoption(argv[i], 0, "run-tests", &short_opts)) {
i++;
// XXX Pass program_arguments, even a whole jq_state *, through;
// could be useful for testing
ret = jq_testsuite(lib_search_paths,
(options & DUMP_DISASM) || (jq_flags & JQ_DEBUG_TRACE),
argc - i, argv + i);
goto out;
}
// check for unknown options... if this argument was a short option
if (strlen(argv[i]) != short_opts + 1) {
fprintf(stderr, "%s: Unknown option %s\n", progname, argv[i]);
die();
}
}
}
if (isatty(fileno(stdout))) {
dumpopts |= JV_PRINT_ISATTY;
#ifndef WIN32
/* Disable color by default on Windows builds as Windows
terminals tend not to display it correctly */
dumpopts |= JV_PRINT_COLOR;
#endif
}
if (options & SORTED_OUTPUT) dumpopts |= JV_PRINT_SORTED;
if (options & ASCII_OUTPUT) dumpopts |= JV_PRINT_ASCII;
if (options & COLOR_OUTPUT) dumpopts |= JV_PRINT_COLOR;
if (options & NO_COLOR_OUTPUT) dumpopts &= ~JV_PRINT_COLOR;
if (jv_get_kind(lib_search_paths) == JV_KIND_NULL) {
// Default search path list
lib_search_paths = JV_ARRAY(jv_string("~/.jq"),
jv_string("$ORIGIN/../lib/jq"),
jv_string("$ORIGIN/lib"));
}
jq_set_attr(jq, jv_string("JQ_LIBRARY_PATH"), lib_search_paths);
char *origin = strdup(argv[0]);
if (origin == NULL) {
fprintf(stderr, "Error: out of memory\n");
exit(1);
}
jq_set_attr(jq, jv_string("JQ_ORIGIN"), jv_string(dirname(origin)));
free(origin);
if (strchr(JQ_VERSION, '-') == NULL)
jq_set_attr(jq, jv_string("VERSION_DIR"), jv_string(JQ_VERSION));
else
jq_set_attr(jq, jv_string("VERSION_DIR"), jv_string_fmt("%.*s-master", (int)(strchr(JQ_VERSION, '-') - JQ_VERSION), JQ_VERSION));
#if (!defined(WIN32) && defined(HAVE_ISATTY)) || defined(HAVE__ISATTY)
#if defined(HAVE__ISATTY) && defined(isatty)
#undef isatty
#define isatty _isatty
#endif
if (!program && isatty(STDOUT_FILENO) && !isatty(STDIN_FILENO))
program = ".";
#endif
if (!program) usage(2);
if (options & FROM_FILE) {
char *program_origin = strdup(program);
if (program_origin == NULL) {
perror("malloc");
exit(2);
}
jv data = jv_load_file(program, 1);
if (!jv_is_valid(data)) {
data = jv_invalid_get_msg(data);
fprintf(stderr, "%s: %s\n", progname, jv_string_value(data));
jv_free(data);
ret = 2;
goto out;
}
jq_set_attr(jq, jv_string("PROGRAM_ORIGIN"), jq_realpath(jv_string(dirname(program_origin))));
compiled = jq_compile_args(jq, jv_string_value(data), jv_copy(program_arguments));
free(program_origin);
jv_free(data);
} else {
jq_set_attr(jq, jv_string("PROGRAM_ORIGIN"), jq_realpath(jv_string("."))); // XXX is this good?
compiled = jq_compile_args(jq, program, jv_copy(program_arguments));
}
if (!compiled){
ret = 3;
goto out;
}
if (options & DUMP_DISASM) {
jq_dump_disassembly(jq, 0);
printf("\n");
}
if ((options & SEQ))
parser_flags |= JV_PARSE_SEQ;
if ((options & RAW_INPUT))
jq_util_input_set_parser(input_state, NULL, (options & SLURP) ? 1 : 0);
else
jq_util_input_set_parser(input_state, jv_parser_new(parser_flags), (options & SLURP) ? 1 : 0);
// Let jq program read from inputs
jq_set_input_cb(jq, jq_util_input_next_input_cb, input_state);
// Let jq program call `debug` builtin and have that go somewhere
jq_set_debug_cb(jq, debug_cb, &dumpopts);
if (nfiles == 0)
jq_util_input_add_input(input_state, "-");
if (options & PROVIDE_NULL) {
if (extra_opt.array_fold==0) {
ret = process(jq, jv_null(), jq_flags, dumpopts);
} else {
ret = process_extra_opt(jq, jv_null(), jq_flags, dumpopts, &extra_opt);
}
} else {
jv value;
while (jq_util_input_errors(input_state) == 0 &&
(jv_is_valid((value = jq_util_input_next_input(input_state))) || jv_invalid_has_msg(jv_copy(value)))) {
if (jv_is_valid(value)) {
if (extra_opt.array_fold==0) {
ret = process(jq, value, jq_flags, dumpopts);
} else {
ret = process_extra_opt(jq, value, jq_flags, dumpopts, &extra_opt);
}
continue;
}
// Parse error
jv msg = jv_invalid_get_msg(value);
if (!(options & SEQ)) {
// --seq -> errors are not fatal
ret = 4;
fprintf(stderr, "parse error: %s\n", jv_string_value(msg));
jv_free(msg);
break;
}
fprintf(stderr, "ignoring parse error: %s\n", jv_string_value(msg));
jv_free(msg);
}
}
if (jq_util_input_errors(input_state) != 0)
ret = 2;
out:
badwrite = ferror(stdout);
if (fclose(stdout)!=0 || badwrite) {
fprintf(stderr,"Error: writing output failed: %s\n", strerror(errno));
ret = 2;
}
jv_free(program_arguments);
jq_util_input_free(&input_state);
jq_teardown(&jq);
if (ret >= 10 && (options & EXIT_STATUS))
return ret - 10;
if (ret >= 10)
return 0;
return ret;
}
static void jv_test() {
/// JSON parser regression tests
{
jv v = jv_parse("{\"a':\"12\"}");
assert(jv_get_kind(v) == JV_KIND_INVALID);
v = jv_invalid_get_msg(v);
assert(strcmp(jv_string_value(v), "Expected separator between values at line 1, column 9 (while parsing '{\"a':\"12\"}')") == 0);
jv_free(v);
}
/// Arrays and numbers
{
jv a = jv_array();
assert(jv_get_kind(a) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(a)) == 0);
assert(jv_array_length(jv_copy(a)) == 0);
a = jv_array_append(a, jv_number(42));
assert(jv_array_length(jv_copy(a)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(a), 0)) == 42);
jv a2 = jv_array_append(jv_array(), jv_number(42));
assert(jv_equal(jv_copy(a), jv_copy(a)));
assert(jv_equal(jv_copy(a2), jv_copy(a2)));
assert(jv_equal(jv_copy(a), jv_copy(a2)));
assert(jv_equal(jv_copy(a2), jv_copy(a)));
jv_free(a2);
a2 = jv_array_append(jv_array(), jv_number(19));
assert(!jv_equal(jv_copy(a), jv_copy(a2)));
assert(!jv_equal(jv_copy(a2), jv_copy(a)));
jv_free(a2);
assert(jv_get_refcnt(a) == 1);
a = jv_array_append(a, jv_copy(a));
assert(jv_get_refcnt(a) == 1);
assert(jv_array_length(jv_copy(a)) == 2);
assert(jv_number_value(jv_array_get(jv_copy(a), 0)) == 42);
for (int i=0; i<10; i++) {
jv subarray = jv_array_get(jv_copy(a), 1);
assert(jv_get_kind(subarray) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(subarray)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(subarray), 0)) == 42);
jv_free(subarray);
}
jv subarray = jv_array_get(jv_copy(a), 1);
assert(jv_get_kind(subarray) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(subarray)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(subarray), 0)) == 42);
jv sub2 = jv_copy(subarray);
sub2 = jv_array_append(sub2, jv_number(19));
assert(jv_get_kind(sub2) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(sub2)) == 2);
assert(jv_number_value(jv_array_get(jv_copy(sub2), 0)) == 42);
assert(jv_number_value(jv_array_get(jv_copy(sub2), 1)) == 19);
assert(jv_get_kind(subarray) == JV_KIND_ARRAY);
assert(jv_array_length(jv_copy(subarray)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(subarray), 0)) == 42);
jv_free(subarray);
void* before = sub2.u.ptr;
sub2 = jv_array_append(sub2, jv_number(200));
void* after = sub2.u.ptr;
assert(before == after);
jv_free(sub2);
jv a3 = jv_array_append(jv_copy(a), jv_number(19));
assert(jv_array_length(jv_copy(a3)) == 3);
assert(jv_number_value(jv_array_get(jv_copy(a3), 0)) == 42);
assert(jv_array_length(jv_array_get(jv_copy(a3), 1)) == 1);
assert(jv_number_value(jv_array_get(jv_copy(a3), 2)) == 19);
jv_free(a3);
jv a4 = jv_array();
a4 = jv_array_append(a4, jv_number(1));
a4 = jv_array_append(a4, jv_number(2));
jv a5 = jv_copy(a4);
a4 = jv_array_append(a4, jv_number(3));
a4 = jv_array_slice(a4, 0, 1);
assert(jv_array_length(jv_copy(a4)) == 1);
a4 = jv_array_append(a4, jv_number(4));
assert(jv_array_length(jv_copy(a4)) == 2);
assert(jv_array_length(jv_copy(a5)) == 2);
jv_free(a4);
jv_free(a5);
assert(jv_array_length(jv_copy(a)) == 2);
assert(jv_number_value(jv_array_get(jv_copy(a), 0)) == 42);
assert(jv_array_length(jv_array_get(jv_copy(a), 1)) == 1);
jv_dump(jv_copy(a), 0); printf("\n");
jv_free(a);
}
/// Strings
{
assert(jv_equal(jv_string("foo"), jv_string_sized("foo", 3)));
char nasty[] = "foo\0";
jv shortstr = jv_string(nasty), longstr = jv_string_sized(nasty, sizeof(nasty));
assert(jv_string_length_bytes(jv_copy(shortstr)) == (int)strlen(nasty));
assert(jv_string_length_bytes(jv_copy(longstr)) == (int)sizeof(nasty));
jv_free(shortstr);
jv_free(longstr);
char a1s[] = "hello", a2s[] = "hello", bs[] = "goodbye";
jv a1 = jv_string(a1s), a2 = jv_string(a2s), b = jv_string(bs);
assert(jv_equal(jv_copy(a1), jv_copy(a2)));
assert(jv_equal(jv_copy(a2), jv_copy(a1)));
assert(!jv_equal(jv_copy(a1), jv_copy(b)));
assert(jv_string_hash(jv_copy(a1)) == jv_string_hash(jv_copy(a1)));
assert(jv_string_hash(jv_copy(a1)) == jv_string_hash(jv_copy(a2)));
assert(jv_string_hash(jv_copy(b)) != jv_string_hash(jv_copy(a1)));
jv_free(a1);
jv_free(a2);
jv_free(b);
assert(jv_equal(jv_string("hello42!"), jv_string_fmt("hello%d%s", 42, "!")));
char big[20000];
for (int i=0; i<(int)sizeof(big); i++) big[i] = 'a';
big[sizeof(big)-1] = 0;
jv str = jv_string_fmt("%s", big);
assert(jv_string_length_bytes(jv_copy(str)) == sizeof(big) - 1);
assert(!strcmp(big, jv_string_value(str)));
jv_free(str);
}
/// Objects
{
jv o1 = jv_object();
o1 = jv_object_set(o1, jv_string("foo"), jv_number(42));
o1 = jv_object_set(o1, jv_string("bar"), jv_number(24));
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("foo"))) == 42);
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("bar"))) == 24);
jv o2 = jv_object_set(jv_copy(o1), jv_string("foo"), jv_number(420));
o2 = jv_object_set(o2, jv_string("bar"), jv_number(240));
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("foo"))) == 42);
assert(jv_number_value(jv_object_get(jv_copy(o1), jv_string("bar"))) == 24);
assert(jv_number_value(jv_object_get(jv_copy(o2), jv_string("foo"))) == 420);
jv_free(o1);
assert(jv_number_value(jv_object_get(jv_copy(o2), jv_string("bar"))) == 240);
jv_dump(jv_copy(o2), 0); printf("\n");
jv_free(o2);
}
/// Compile errors
{
jq_state *jq = jq_init();
jq_compile_args(jq, "}", jv_array());
jq_teardown(&jq);
}
}
jv jq_next(jq_state *jq) {
jv cfunc_input[MAX_CFUNCTION_ARGS];
jv_nomem_handler(jq->nomem_handler, jq->nomem_handler_data);
uint16_t* pc = stack_restore(jq);
assert(pc);
int backtracking = !jq->initial_execution;
jq->initial_execution = 0;
while (1) {
uint16_t opcode = *pc;
if (jq->debug_trace_enabled) {
dump_operation(frame_current(jq)->bc, pc);
printf("\t");
const struct opcode_description* opdesc = opcode_describe(opcode);
stack_ptr param = 0;
if (!backtracking) {
int stack_in = opdesc->stack_in;
if (stack_in == -1) stack_in = pc[1];
int i;
for (i=0; i<stack_in; i++) {
if (i == 0) {
param = jq->stk_top;
} else {
printf(" | ");
param = *stack_block_next(&jq->stk, param);
}
if (!param) break;
jv_dump(jv_copy(*(jv*)stack_block(&jq->stk, param)), 0);
//printf("<%d>", jv_get_refcnt(param->val));
//printf(" -- ");
//jv_dump(jv_copy(jq->path), 0);
}
} else {
printf("\t<backtracking>");
}
printf("\n");
}
if (backtracking) {
opcode = ON_BACKTRACK(opcode);
backtracking = 0;
}
pc++;
switch (opcode) {
default: assert(0 && "invalid instruction");
case LOADK: {
jv v = jv_array_get(jv_copy(frame_current(jq)->bc->constants), *pc++);
assert(jv_is_valid(v));
jv_free(stack_pop(jq));
stack_push(jq, v);
break;
}
case DUP: {
jv v = stack_pop(jq);
stack_push(jq, jv_copy(v));
stack_push(jq, v);
break;
}
case DUP2: {
jv keep = stack_pop(jq);
jv v = stack_pop(jq);
stack_push(jq, jv_copy(v));
stack_push(jq, keep);
stack_push(jq, v);
break;
}
case SUBEXP_BEGIN: {
jv v = stack_pop(jq);
stack_push(jq, jv_copy(v));
stack_push(jq, v);
jq->subexp_nest++;
break;
}
case SUBEXP_END: {
assert(jq->subexp_nest > 0);
jq->subexp_nest--;
jv a = stack_pop(jq);
jv b = stack_pop(jq);
stack_push(jq, a);
stack_push(jq, b);
break;
}
case POP: {
jv_free(stack_pop(jq));
break;
}
case APPEND: {
jv v = stack_pop(jq);
uint16_t level = *pc++;
uint16_t vidx = *pc++;
jv* var = frame_local_var(jq, vidx, level);
assert(jv_get_kind(*var) == JV_KIND_ARRAY);
*var = jv_array_append(*var, v);
break;
}
case INSERT: {
jv stktop = stack_pop(jq);
jv v = stack_pop(jq);
jv k = stack_pop(jq);
jv objv = stack_pop(jq);
assert(jv_get_kind(objv) == JV_KIND_OBJECT);
if (jv_get_kind(k) == JV_KIND_STRING) {
stack_push(jq, jv_object_set(objv, k, v));
stack_push(jq, stktop);
} else {
print_error(jq, jv_invalid_with_msg(jv_string_fmt("Cannot use %s as object key",
jv_kind_name(jv_get_kind(k)))));
jv_free(stktop);
jv_free(v);
jv_free(k);
jv_free(objv);
goto do_backtrack;
}
break;
}
case ON_BACKTRACK(RANGE):
case RANGE: {
uint16_t level = *pc++;
uint16_t v = *pc++;
jv* var = frame_local_var(jq, v, level);
jv max = stack_pop(jq);
if (jv_get_kind(*var) != JV_KIND_NUMBER ||
jv_get_kind(max) != JV_KIND_NUMBER) {
print_error(jq, jv_invalid_with_msg(jv_string_fmt("Range bounds must be numeric")));
jv_free(max);
goto do_backtrack;
} else if (jv_number_value(jv_copy(*var)) >= jv_number_value(jv_copy(max))) {
/* finished iterating */
goto do_backtrack;
} else {
jv curr = jv_copy(*var);
*var = jv_number(jv_number_value(*var) + 1);
struct stack_pos spos = stack_get_pos(jq);
stack_push(jq, jv_copy(max));
stack_save(jq, pc - 3, spos);
stack_push(jq, curr);
}
break;
}
// FIXME: loadv/storev may do too much copying/freeing
case LOADV: {
uint16_t level = *pc++;
uint16_t v = *pc++;
jv* var = frame_local_var(jq, v, level);
if (jq->debug_trace_enabled) {
printf("V%d = ", v);
jv_dump(jv_copy(*var), 0);
printf("\n");
}
jv_free(stack_pop(jq));
stack_push(jq, jv_copy(*var));
break;
}
// Does a load but replaces the variable with null
case LOADVN: {
uint16_t level = *pc++;
uint16_t v = *pc++;
jv* var = frame_local_var(jq, v, level);
if (jq->debug_trace_enabled) {
printf("V%d = ", v);
jv_dump(jv_copy(*var), 0);
printf("\n");
}
jv_free(stack_pop(jq));
stack_push(jq, *var);
*var = jv_null();
break;
}
case STOREV: {
uint16_t level = *pc++;
uint16_t v = *pc++;
jv* var = frame_local_var(jq, v, level);
jv val = stack_pop(jq);
if (jq->debug_trace_enabled) {
printf("V%d = ", v);
jv_dump(jv_copy(val), 0);
printf("\n");
}
jv_free(*var);
*var = val;
break;
}
case PATH_BEGIN: {
jv v = stack_pop(jq);
stack_push(jq, jq->path);
stack_save(jq, pc - 1, stack_get_pos(jq));
stack_push(jq, jv_number(jq->subexp_nest));
stack_push(jq, v);
jq->path = jv_array();
jq->subexp_nest = 0;
break;
}
case PATH_END: {
jv v = stack_pop(jq);
jv_free(v); // discard value, only keep path
int old_subexp_nest = (int)jv_number_value(stack_pop(jq));
jv path = jq->path;
jq->path = stack_pop(jq);
struct stack_pos spos = stack_get_pos(jq);
stack_push(jq, jv_copy(path));
stack_save(jq, pc - 1, spos);
stack_push(jq, path);
jq->subexp_nest = old_subexp_nest;
break;
}
case ON_BACKTRACK(PATH_BEGIN):
case ON_BACKTRACK(PATH_END): {
jv_free(jq->path);
jq->path = stack_pop(jq);
goto do_backtrack;
}
case INDEX:
case INDEX_OPT: {
jv t = stack_pop(jq);
jv k = stack_pop(jq);
path_append(jq, jv_copy(k));
jv v = jv_get(t, k);
if (jv_is_valid(v)) {
stack_push(jq, v);
} else {
if (opcode == INDEX)
print_error(jq, v);
else
jv_free(v);
goto do_backtrack;
}
break;
}
case JUMP: {
uint16_t offset = *pc++;
pc += offset;
break;
}
case JUMP_F: {
uint16_t offset = *pc++;
jv t = stack_pop(jq);
jv_kind kind = jv_get_kind(t);
if (kind == JV_KIND_FALSE || kind == JV_KIND_NULL) {
pc += offset;
}
stack_push(jq, t); // FIXME do this better
break;
}
case EACH:
case EACH_OPT:
stack_push(jq, jv_number(-1));
// fallthrough
case ON_BACKTRACK(EACH):
case ON_BACKTRACK(EACH_OPT): {
int idx = jv_number_value(stack_pop(jq));
jv container = stack_pop(jq);
int keep_going, is_last = 0;
jv key, value;
if (jv_get_kind(container) == JV_KIND_ARRAY) {
if (opcode == EACH || opcode == EACH_OPT) idx = 0;
else idx = idx + 1;
int len = jv_array_length(jv_copy(container));
keep_going = idx < len;
is_last = idx == len - 1;
if (keep_going) {
key = jv_number(idx);
value = jv_array_get(jv_copy(container), idx);
}
} else if (jv_get_kind(container) == JV_KIND_OBJECT) {
if (opcode == EACH || opcode == EACH_OPT) idx = jv_object_iter(container);
else idx = jv_object_iter_next(container, idx);
keep_going = jv_object_iter_valid(container, idx);
if (keep_going) {
key = jv_object_iter_key(container, idx);
value = jv_object_iter_value(container, idx);
}
} else {
assert(opcode == EACH || opcode == EACH_OPT);
if (opcode == EACH) {
print_error(jq,
jv_invalid_with_msg(jv_string_fmt("Cannot iterate over %s",
jv_kind_name(jv_get_kind(container)))));
}
keep_going = 0;
}
if (!keep_going) {
jv_free(container);
goto do_backtrack;
} else if (is_last) {
// we don't need to make a backtrack point
jv_free(container);
path_append(jq, key);
stack_push(jq, value);
} else {
struct stack_pos spos = stack_get_pos(jq);
stack_push(jq, container);
stack_push(jq, jv_number(idx));
stack_save(jq, pc - 1, spos);
path_append(jq, key);
stack_push(jq, value);
}
break;
}
do_backtrack:
case BACKTRACK: {
pc = stack_restore(jq);
if (!pc) {
return jv_invalid();
}
backtracking = 1;
break;
}
case FORK: {
stack_save(jq, pc - 1, stack_get_pos(jq));
pc++; // skip offset this time
break;
}
case ON_BACKTRACK(FORK): {
uint16_t offset = *pc++;
pc += offset;
break;
}
case CALL_BUILTIN: {
int nargs = *pc++;
jv top = stack_pop(jq);
jv* in = cfunc_input;
int i;
in[0] = top;
for (i = 1; i < nargs; i++) {
in[i] = stack_pop(jq);
}
struct cfunction* function = &frame_current(jq)->bc->globals->cfunctions[*pc++];
typedef jv (*func_1)(jv);
typedef jv (*func_2)(jv,jv);
typedef jv (*func_3)(jv,jv,jv);
typedef jv (*func_4)(jv,jv,jv,jv);
typedef jv (*func_5)(jv,jv,jv,jv,jv);
switch (function->nargs) {
case 1: top = ((func_1)function->fptr)(in[0]); break;
case 2: top = ((func_2)function->fptr)(in[0], in[1]); break;
case 3: top = ((func_3)function->fptr)(in[0], in[1], in[2]); break;
case 4: top = ((func_4)function->fptr)(in[0], in[1], in[2], in[3]); break;
case 5: top = ((func_5)function->fptr)(in[0], in[1], in[2], in[3], in[4]); break;
default: return jv_invalid_with_msg(jv_string("Function takes too many arguments"));
}
if (jv_is_valid(top)) {
stack_push(jq, top);
} else {
print_error(jq, top);
goto do_backtrack;
}
break;
}
case CALL_JQ: {
jv input = stack_pop(jq);
uint16_t nclosures = *pc++;
uint16_t* retaddr = pc + 2 + nclosures*2;
struct frame* new_frame = frame_push(jq, make_closure(jq, pc),
pc + 2, nclosures);
new_frame->retdata = jq->stk_top;
new_frame->retaddr = retaddr;
pc = new_frame->bc->code;
stack_push(jq, input);
break;
}
case RET: {
jv value = stack_pop(jq);
assert(jq->stk_top == frame_current(jq)->retdata);
uint16_t* retaddr = frame_current(jq)->retaddr;
if (retaddr) {
// function return
pc = retaddr;
frame_pop(jq);
} else {
// top-level return, yielding value
struct stack_pos spos = stack_get_pos(jq);
stack_push(jq, jv_null());
stack_save(jq, pc - 1, spos);
return value;
}
stack_push(jq, value);
break;
}
case ON_BACKTRACK(RET): {
// resumed after top-level return
goto do_backtrack;
}
}
}
}
