selftests/bpf/json_writer.c

29 static void jsonw_indent(json_writer_t *self)
32 	for (i = 0; i < self->depth; ++i)
33 		fputs("    ", self->out);
37 static void jsonw_eol(json_writer_t *self)
39 	if (!self->pretty)
42 	putc('\n', self->out);
43 	jsonw_indent(self);
47 static void jsonw_eor(json_writer_t *self)
49 	if (self->sep != '\0')
50 		putc(self->sep, self->out);
51 	self->sep = ',';
57 static void jsonw_puts(json_writer_t *self, const char *str)
59 	putc('"', self->out);
63 			fputs("\\t", self->out);
66 			fputs("\\n", self->out);
69 			fputs("\\r", self->out);
72 			fputs("\\f", self->out);
75 			fputs("\\b", self->out);
78 			fputs("\\\\", self->out);
81 			fputs("\\\"", self->out);
84 			putc(*str, self->out);
86 	putc('"', self->out);
92 	json_writer_t *self = malloc(sizeof(*self));
93 	if (self) {
94 		self->out = f;
95 		self->depth = 0;
96 		self->pretty = false;
97 		self->sep = '\0';
99 	return self;
105 	json_writer_t *self = *self_p;
107 	assert(self->depth == 0);
108 	fputs("\n", self->out);
109 	fflush(self->out);
110 	free(self);
114 void jsonw_pretty(json_writer_t *self, bool on)
116 	self->pretty = on;
119 void jsonw_reset(json_writer_t *self)
121 	assert(self->depth == 0);
122 	self->sep = '\0';
126 static void jsonw_begin(json_writer_t *self, int c)
128 	jsonw_eor(self);
129 	putc(c, self->out);
130 	++self->depth;
131 	self->sep = '\0';
134 static void jsonw_end(json_writer_t *self, int c)
136 	assert(self->depth > 0);
138 	--self->depth;
139 	if (self->sep != '\0')
140 		jsonw_eol(self);
141 	putc(c, self->out);
142 	self->sep = ',';
147 void jsonw_name(json_writer_t *self, const char *name)
149 	jsonw_eor(self);
150 	jsonw_eol(self);
151 	self->sep = '\0';
152 	jsonw_puts(self, name);
153 	putc(':', self->out);
154 	if (self->pretty)
155 		putc(' ', self->out);
158 void jsonw_vprintf_enquote(json_writer_t *self, const char *fmt, va_list ap)
160 	jsonw_eor(self);
161 	putc('"', self->out);
162 	vfprintf(self->out, fmt, ap);
163 	putc('"', self->out);
166 void jsonw_printf(json_writer_t *self, const char *fmt, ...)
171 	jsonw_eor(self);
172 	vfprintf(self->out, fmt, ap);
177 void jsonw_start_object(json_writer_t *self)
179 	jsonw_begin(self, '{');
182 void jsonw_end_object(json_writer_t *self)
184 	jsonw_end(self, '}');
187 void jsonw_start_array(json_writer_t *self)
189 	jsonw_begin(self, '[');
192 void jsonw_end_array(json_writer_t *self)
194 	jsonw_end(self, ']');
198 void jsonw_string(json_writer_t *self, const char *value)
200 	jsonw_eor(self);
201 	jsonw_puts(self, value);
204 void jsonw_bool(json_writer_t *self, bool val)
206 	jsonw_printf(self, "%s", val ? "true" : "false");
209 void jsonw_null(json_writer_t *self)
211 	jsonw_printf(self, "null");
214 void jsonw_float_fmt(json_writer_t *self, const char *fmt, double num)
216 	jsonw_printf(self, fmt, num);
220 void jsonw_float(json_writer_t *self, double num)
222 	jsonw_printf(self, "%g", num);
226 void jsonw_hu(json_writer_t *self, unsigned short num)
228 	jsonw_printf(self, "%hu", num);
231 void jsonw_uint(json_writer_t *self, uint64_t num)
233 	jsonw_printf(self, "%"PRIu64, num);
236 void jsonw_lluint(json_writer_t *self, unsigned long long int num)
238 	jsonw_printf(self, "%llu", num);
241 void jsonw_int(json_writer_t *self, int64_t num)
243 	jsonw_printf(self, "%"PRId64, num);
247 void jsonw_string_field(json_writer_t *self, const char *prop, const char *val)
249 	jsonw_name(self, prop);
250 	jsonw_string(self, val);
253 void jsonw_bool_field(json_writer_t *self, const char *prop, bool val)
255 	jsonw_name(self, prop);
256 	jsonw_bool(self, val);
260 void jsonw_float_field(json_writer_t *self, const char *prop, double val)
262 	jsonw_name(self, prop);
263 	jsonw_float(self, val);
267 void jsonw_float_field_fmt(json_writer_t *self,
272 	jsonw_name(self, prop);
273 	jsonw_float_fmt(self, fmt, val);
276 void jsonw_uint_field(json_writer_t *self, const char *prop, uint64_t num)
278 	jsonw_name(self, prop);
279 	jsonw_uint(self, num);
282 void jsonw_hu_field(json_writer_t *self, const char *prop, unsigned short num)
284 	jsonw_name(self, prop);
285 	jsonw_hu(self, num);
288 void jsonw_lluint_field(json_writer_t *self,
292 	jsonw_name(self, prop);
293 	jsonw_lluint(self, num);
296 void jsonw_int_field(json_writer_t *self, const char *prop, int64_t num)
298 	jsonw_name(self, prop);
299 	jsonw_int(self, num);
302 void jsonw_null_field(json_writer_t *self, const char *prop)
304 	jsonw_name(self, prop);
305 	jsonw_null(self);