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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 #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); 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_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_loads(const xs_str *json);
xs_val *xs_json_load(FILE *f); xs_val *xs_json_load(FILE *f);
@ -17,63 +18,55 @@ xs_val *xs_json_load(FILE *f);
/** JSON dumps **/ /** 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 */ /* dumps a string in JSON format */
{ {
unsigned char c; unsigned char c;
s = xs_str_cat(s, "\""); fputs("\"", f);
while ((c = *data)) { while ((c = *data)) {
if (c == '\n') if (c == '\n')
s = xs_str_cat(s, "\\n"); fputs("\\n", f);
else else
if (c == '\r') if (c == '\r')
s = xs_str_cat(s, "\\r"); fputs("\\r", f);
else else
if (c == '\t') if (c == '\t')
s = xs_str_cat(s, "\\t"); fputs("\\t", f);
else else
if (c == '\\') if (c == '\\')
s = xs_str_cat(s, "\\\\"); fputs("\\\\", f);
else else
if (c == '"') if (c == '"')
s = xs_str_cat(s, "\\\""); fputs("\\\"", f);
else else
if (c < 32) { if (c < 32)
char tmp[10]; fprintf(f, "\\u%04x", (unsigned int) c);
snprintf(tmp, sizeof(tmp), "\\u%04x", (unsigned int) c);
s = xs_str_cat(s, tmp);
}
else else
s = xs_append_m(s, data, 1); fputc(c, f);
data++; data++;
} }
s = xs_str_cat(s, "\""); fputs("\"", f);
return s;
} }
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 */ /* adds indentation */
{ {
if (indent) { if (indent) {
int n; int n;
s = xs_str_cat(s, "\n"); fputc('\n', f);
for (n = 0; n < level * indent; n++) 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 */ /* dumps partial data as JSON */
{ {
int c = 0; 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)) { switch (xs_type(data)) {
case XSTYPE_NULL: case XSTYPE_NULL:
s = xs_str_cat(s, "null"); fputs("null", f);
break; break;
case XSTYPE_TRUE: case XSTYPE_TRUE:
s = xs_str_cat(s, "true"); fputs("true", f);
break; break;
case XSTYPE_FALSE: case XSTYPE_FALSE:
s = xs_str_cat(s, "false"); fputs("false", f);
break; break;
case XSTYPE_NUMBER: case XSTYPE_NUMBER:
s = xs_str_cat(s, xs_number_str(data)); fputs(xs_number_str(data), f);
break; break;
case XSTYPE_LIST: case XSTYPE_LIST:
s = xs_str_cat(s, "["); fputc('[', f);
while (xs_list_iter(&data, &v)) { while (xs_list_iter(&data, &v)) {
if (c != 0) 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(s, v, level + 1, indent); _xs_json_dump(v, level + 1, indent, f);
c++; c++;
} }
s = _xs_json_indent(s, level, indent); _xs_json_indent(level, indent, f);
s = xs_str_cat(s, "]"); fputc(']', f);
break; break;
case XSTYPE_DICT: case XSTYPE_DICT:
s = xs_str_cat(s, "{"); fputc('{', f);
xs_str *k; xs_str *k;
while (xs_dict_iter(&data, &k, &v)) { while (xs_dict_iter(&data, &k, &v)) {
if (c != 0) 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); _xs_json_dump_str(k, f);
s = xs_str_cat(s, ":"); fputc(':', f);
if (indent) 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++; c++;
} }
s = _xs_json_indent(s, level, indent); _xs_json_indent(level, indent, f);
s = xs_str_cat(s, "}"); fputc('}', f);
break; break;
case XSTYPE_STRING: case XSTYPE_STRING:
s = _xs_json_dumps_str(s, data); _xs_json_dump_str(data, f);
break; break;
default: default:
break; break;
} }
return s;
} }
xs_str *xs_json_dumps_pp(const xs_val *data, int indent) 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; xs_str *s = NULL;
size_t sz;
FILE *f;
if (t == XSTYPE_LIST || t == XSTYPE_DICT) { if ((f = open_memstream(&s, &sz)) != NULL) {
s = xs_str_new(NULL); int r = xs_json_dump_pp(data, indent, f);
s = _xs_json_dumps(s, data, 0, indent); fclose(f);
if (!r)
s = xs_free(s);
} }
return s; return s;
@ -170,15 +165,16 @@ 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) int xs_json_dump_pp(const xs_val *data, int indent, FILE *f)
/* dumps data into a file as JSON */ /* dumps data into a file as JSON */
{ {
xs *j = xs_json_dumps_pp(data, indent); xstype t = xs_type(data);
if (j == NULL) if (t == XSTYPE_LIST || t == XSTYPE_DICT) {
return 0; _xs_json_dump(data, 0, indent, f);
fwrite(j, strlen(j), 1, f);
return 1; return 1;
} }
return 0;
}
/** JSON loads **/ /** JSON loads **/

2
xs_version.h
View File

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