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#include "jv.h"
#include <stdio.h>
#include <float.h>
#include <string.h>
#include "jv_dtoa.h"
#include "jv_unicode.h"
#define ESC "\033"
#define COL(c) (ESC "[" c "m")
#define COLRESET (ESC "[0m")
// Colour table. See http://en.wikipedia.org/wiki/ANSI_escape_code#Colors
// for how to choose these.
static const jv_kind colour_kinds[] =
{JV_KIND_NULL, JV_KIND_FALSE, JV_KIND_TRUE, JV_KIND_NUMBER,
JV_KIND_STRING, JV_KIND_ARRAY, JV_KIND_OBJECT};
static const char* const colours[] =
{COL("30;1"), COL("0"), COL("0"), COL("0"),
COL("32"), COL("37"), COL("37")};
#define FIELD_COLOUR COL("34;1")
static void put_buf(const char* s, int len, FILE* fout, jv* strout) {
if (strout) {
*strout = jv_string_append_buf(*strout, s, len);
} else {
fwrite(s, 1, len, fout);
}
}
static void put_char(char c, FILE* fout, jv* strout) {
put_buf(&c, 1, fout, strout);
}
static void put_str(const char* s, FILE* fout, jv* strout) {
put_buf(s, strlen(s), fout, strout);
}
static void put_space(int n, FILE* fout, jv* strout) {
while (n--) {
put_char(' ', fout, strout);
}
}
static void jvp_dump_string(jv str, int ascii_only, FILE* F, jv* S) {
assert(jv_get_kind(str) == JV_KIND_STRING);
const char* i = jv_string_value(str);
const char* end = i + jv_string_length_bytes(jv_copy(str));
const char* cstart;
int c = 0;
char buf[32];
put_char('"', F, S);
while ((i = jvp_utf8_next((cstart = i), end, &c))) {
assert(c != -1);
int unicode_escape = 0;
if (0x20 <= c && c <= 0x7E) {
// printable ASCII
if (c == '"' || c == '\\') {
put_char('\\', F, S);
}
put_char(c, F, S);
} else if (c < 0x20 || c == 0x7F) {
// ASCII control character
switch (c) {
case '\b':
put_char('\\', F, S);
put_char('b', F, S);
break;
case '\t':
put_char('\\', F, S);
put_char('t', F, S);
break;
case '\r':
put_char('\\', F, S);
put_char('r', F, S);
break;
case '\n':
put_char('\\', F, S);
put_char('n', F, S);
break;
case '\f':
put_char('\\', F, S);
put_char('f', F, S);
break;
default:
unicode_escape = 1;
break;
}
} else {
if (ascii_only) {
unicode_escape = 1;
} else {
put_buf(cstart, i - cstart, F, S);
}
}
if (unicode_escape) {
if (c <= 0xffff) {
sprintf(buf, "\\u%04x", c);
} else {
c -= 0x10000;
sprintf(buf, "\\u%04x\\u%04x",
0xD800 | ((c & 0xffc00) >> 10),
0xDC00 | (c & 0x003ff));
}
put_str(buf, F, S);
}
}
assert(c != -1);
put_char('"', F, S);
}
enum { INDENT = 2 };
static void jv_dump_term(struct dtoa_context* C, jv x, int flags, int indent, FILE* F, jv* S) {
char buf[JVP_DTOA_FMT_MAX_LEN];
const char* colour = 0;
if (flags & JV_PRINT_COLOUR) {
for (unsigned i=0; i<sizeof(colour_kinds)/sizeof(colour_kinds[0]); i++) {
if (jv_get_kind(x) == colour_kinds[i]) {
colour = colours[i];
put_str(colour, F, S);
break;
}
}
}
switch (jv_get_kind(x)) {
default:
case JV_KIND_INVALID:
assert(0 && "Invalid value");
break;
case JV_KIND_NULL:
put_str("null", F, S);
break;
case JV_KIND_FALSE:
put_str("false", F, S);
break;
case JV_KIND_TRUE:
put_str("true", F, S);
break;
case JV_KIND_NUMBER: {
double d = jv_number_value(x);
if (d != d) {
// JSON doesn't have NaN, so we'll render it as "null"
put_str("null", F, S);
} else {
// Normalise infinities to something we can print in valid JSON
if (d > DBL_MAX) d = DBL_MAX;
if (d < -DBL_MAX) d = -DBL_MAX;
put_str(jvp_dtoa_fmt(C, buf, d), F, S);
}
break;
}
case JV_KIND_STRING:
jvp_dump_string(x, flags & JV_PRINT_ASCII, F, S);
break;
case JV_KIND_ARRAY: {
if (jv_array_length(jv_copy(x)) == 0) {
put_str("[]", F, S);
break;
}
put_str("[", F, S);
if (flags & JV_PRINT_PRETTY) {
put_char('\n', F, S);
put_space(indent+INDENT, F, S);
}
jv_array_foreach(x, i, elem) {
if (i!=0) {
if (flags & JV_PRINT_PRETTY) {
put_str(",\n", F, S);
put_space(indent+INDENT, F, S);
} else {
put_str(",", F, S);
}
}
jv_dump_term(C, elem, flags, indent + INDENT, F, S);
if (colour) put_str(colour, F, S);
}
if (flags & JV_PRINT_PRETTY) {
put_char('\n', F, S);
put_space(indent, F, S);
}
if (colour) put_str(colour, F, S);
put_char(']', F, S);
break;
}
case JV_KIND_OBJECT: {
if (jv_object_length(jv_copy(x)) == 0) {
put_str("{}", F, S);
break;
}
put_char('{', F, S);
if (flags & JV_PRINT_PRETTY) {
put_char('\n', F, S);
put_space(indent+INDENT, F, S);
}
int first = 1;
jv_object_foreach(x, key, value) {
if (!first) {
if (flags & JV_PRINT_PRETTY){
put_str(",\n", F, S);
put_space(indent+INDENT, F, S);
} else {
put_str(",", F, S);
}
}
if (colour) put_str(COLRESET, F, S);
first = 0;
if (colour) put_str(FIELD_COLOUR, F, S);
jvp_dump_string(key, flags & JV_PRINT_ASCII, F, S);
jv_free(key);
if (colour) put_str(COLRESET,</
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