mirror of https://github.com/SuperBFG7/ympd
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
// Copyright (c) 2004-2013 Sergey Lyubka <valenok@gmail.com>
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// Copyright (c) 2013 Cesanta Software Limited
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// All rights reserved
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//
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// This library is dual-licensed: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation. For the terms of this
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// license, see <http://www.gnu.org/licenses/>.
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//
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// You are free to use this library under the terms of the GNU General
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// Public License, but WITHOUT ANY WARRANTY; without even the implied
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// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// Alternatively, you can license this library under a commercial
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// license, as set out in <http://cesanta.com/products.html>.
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// json encoder 'frozen' from https://github.com/cesanta/frozen
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#include <stdio.h>
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#include "json_encode.h"
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int json_emit_int(char *buf, int buf_len, long int value) {
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return buf_len <= 0 ? 0 : snprintf(buf, buf_len, "%ld", value);
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}
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int json_emit_double(char *buf, int buf_len, double value) {
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return buf_len <= 0 ? 0 : snprintf(buf, buf_len, "%g", value);
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}
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int json_emit_quoted_str(char *buf, int buf_len, const char *str) {
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int i = 0, j = 0, ch;
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#define EMIT(x) do { if (j < buf_len) buf[j++] = x; } while (0)
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EMIT('"');
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while ((ch = str[i++]) != '\0' && j < buf_len) {
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switch (ch) {
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case '"': EMIT('\\'); EMIT('"'); break;
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case '\\': EMIT('\\'); EMIT('\\'); break;
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case '\b': EMIT('\\'); EMIT('b'); break;
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case '\f': EMIT('\\'); EMIT('f'); break;
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case '\n': EMIT('\\'); EMIT('n'); break;
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case '\r': EMIT('\\'); EMIT('r'); break;
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case '\t': EMIT('\\'); EMIT('t'); break;
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default: EMIT(ch);
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}
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}
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EMIT('"');
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EMIT(0);
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return j == 0 ? 0 : j - 1;
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}
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int json_emit_raw_str(char *buf, int buf_len, const char *str) {
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return buf_len <= 0 ? 0 : snprintf(buf, buf_len, "%s", str);
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} |