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Backport from xs.

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default 2023-08-05 21:57:45 +02:00
parent 15f755960b
commit 6949d7df8a
2 changed files with 53 additions and 57 deletions
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108
xs_json.h
View File

@ -4,9 +4,10 @@
#define _XS_JSON_H
xs_str *xs_json_dumps_pp(const xs_val *data, int indent);
int xs_json_dump_pp(const xs_val *data, int indent, FILE *f);
xs_str *xs_json_dumps_pp(const xs_val *data, int indent);
#define xs_json_dumps(data) xs_json_dumps_pp(data, 0)
#define xs_json_dump(data, f) xs_json_dumps_pp(data, 0, f)
xs_val *xs_json_loads(const xs_str *json);
xs_val *xs_json_load(FILE *f);
@ -17,63 +18,55 @@ xs_val *xs_json_load(FILE *f);
/** JSON dumps **/
static xs_str *_xs_json_dumps_str(xs_str *s, const char *data)
static void _xs_json_dump_str(const char *data, FILE *f)
/* dumps a string in JSON format */
{
unsigned char c;
s = xs_str_cat(s, "\"");
fputs("\"", f);
while ((c = *data)) {
if (c == '\n')
s = xs_str_cat(s, "\\n");
fputs("\\n", f);
else
if (c == '\r')
s = xs_str_cat(s, "\\r");
fputs("\\r", f);
else
if (c == '\t')
s = xs_str_cat(s, "\\t");
fputs("\\t", f);
else
if (c == '\\')
s = xs_str_cat(s, "\\\\");
fputs("\\\\", f);
else
if (c == '"')
s = xs_str_cat(s, "\\\"");
fputs("\\\"", f);
else
if (c < 32) {
char tmp[10];
snprintf(tmp, sizeof(tmp), "\\u%04x", (unsigned int) c);
s = xs_str_cat(s, tmp);
}
if (c < 32)
fprintf(f, "\\u%04x", (unsigned int) c);
else
s = xs_append_m(s, data, 1);
fputc(c, f);
data++;
}
s = xs_str_cat(s, "\"");
return s;
fputs("\"", f);
}
static xs_str *_xs_json_indent(xs_str *s, int level, int indent)
static void _xs_json_indent(int level, int indent, FILE *f)
/* adds indentation */
{
if (indent) {
int n;
s = xs_str_cat(s, "\n");
fputc('\n', f);
for (n = 0; n < level * indent; n++)
s = xs_str_cat(s, " ");
fputc(' ', f);
}
return s;
}
static xs_str *_xs_json_dumps(xs_str *s, const xs_val *s_data, int level, int indent)
static void _xs_json_dump(const xs_val *s_data, int level, int indent, FILE *f)
/* dumps partial data as JSON */
{
int c = 0;
@ -82,85 +75,87 @@ static xs_str *_xs_json_dumps(xs_str *s, const xs_val *s_data, int level, int in
switch (xs_type(data)) {
case XSTYPE_NULL:
s = xs_str_cat(s, "null");
fputs("null", f);
break;
case XSTYPE_TRUE:
s = xs_str_cat(s, "true");
fputs("true", f);
break;
case XSTYPE_FALSE:
s = xs_str_cat(s, "false");
fputs("false", f);
break;
case XSTYPE_NUMBER:
s = xs_str_cat(s, xs_number_str(data));
fputs(xs_number_str(data), f);
break;
case XSTYPE_LIST:
s = xs_str_cat(s, "[");
fputc('[', f);
while (xs_list_iter(&data, &v)) {
if (c != 0)
s = xs_str_cat(s, ",");
fputc(',', f);
s = _xs_json_indent(s, level + 1, indent);
s = _xs_json_dumps(s, v, level + 1, indent);
_xs_json_indent(level + 1, indent, f);
_xs_json_dump(v, level + 1, indent, f);
c++;
}
s = _xs_json_indent(s, level, indent);
s = xs_str_cat(s, "]");
_xs_json_indent(level, indent, f);
fputc(']', f);
break;
case XSTYPE_DICT:
s = xs_str_cat(s, "{");
fputc('{', f);
xs_str *k;
while (xs_dict_iter(&data, &k, &v)) {
if (c != 0)
s = xs_str_cat(s, ",");
fputc(',', f);
s = _xs_json_indent(s, level + 1, indent);
_xs_json_indent(level + 1, indent, f);
s = _xs_json_dumps_str(s, k);
s = xs_str_cat(s, ":");
_xs_json_dump_str(k, f);
fputc(':', f);
if (indent)
s = xs_str_cat(s, " ");
fputc(' ', f);
s = _xs_json_dumps(s, v, level + 1, indent);
_xs_json_dump(v, level + 1, indent, f);
c++;
}
s = _xs_json_indent(s, level, indent);
s = xs_str_cat(s, "}");
_xs_json_indent(level, indent, f);
fputc('}', f);
break;
case XSTYPE_STRING:
s = _xs_json_dumps_str(s, data);
_xs_json_dump_str(data, f);
break;
default:
break;
}
return s;
}
xs_str *xs_json_dumps_pp(const xs_val *data, int indent)
/* dumps a piece of data as JSON */
/* dumps data as a JSON string */
{
xstype t = xs_type(data);
xs_str *s = NULL;
size_t sz;
FILE *f;
if (t == XSTYPE_LIST || t == XSTYPE_DICT) {
s = xs_str_new(NULL);
s = _xs_json_dumps(s, data, 0, indent);
if ((f = open_memstream(&s, &sz)) != NULL) {
int r = xs_json_dump_pp(data, indent, f);
fclose(f);
if (!r)
s = xs_free(s);
}
return s;
@ -170,13 +165,14 @@ xs_str *xs_json_dumps_pp(const xs_val *data, int indent)
int xs_json_dump_pp(const xs_val *data, int indent, FILE *f)
/* dumps data into a file as JSON */
{
xs *j = xs_json_dumps_pp(data, indent);
xstype t = xs_type(data);
if (j == NULL)
return 0;
if (t == XSTYPE_LIST || t == XSTYPE_DICT) {
_xs_json_dump(data, 0, indent, f);
return 1;
}
fwrite(j, strlen(j), 1, f);
return 1;
return 0;
}

2
xs_version.h
View File

@ -1 +1 @@
/* 5ad148b1c1dbbf7b4550c9fcd13d96ac6def2d21 */
/* 7ee8d1e20f4adc0a1cddd64b290efee94e055f32 */