json helpers for writing

2 files changed, 77 insertions, 0 deletions

diff --git a/redist/json_helpers.c b/redist/json_helpers.c
new file mode 100644
index 0000000..e96e873
--- /dev/null
+++ b/redist/json_helpers.c
@@ -0,0 +1,63 @@
+// (C) 2017 <>< Joshua Allen, Under MIT/x11 License.
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#include "json_helpers.h"
+
+void json_write_float_array(FILE* f, const char* tag, float* v, uint8_t count) {
+	uint8_t i = 0;
+	char * str1 = NULL;
+	char * str2 = NULL;
+	asprintf(&str1,"\"%s\":[", tag);
+
+	for (i=0;i<count;++i) {
+		if (i<(count-1)) {
+			asprintf(&str2, "%s\"%f\",", str1,v[i]);
+		} else {
+			asprintf(&str2, "%s\"%f\"", str1,v[i]);
+		}
+		free(str1);
+		str1=str2;
+		str2=NULL;
+	}
+	asprintf(&str2, "%s]\n", str1,v[i]);
+	fputs(str2,f);
+	free(str1);
+	free(str2);
+}
+
+void json_write_double_array(FILE* f, const char* tag, double* v, uint8_t count) {
+	uint8_t i = 0;
+	char * str1 = NULL;
+	char * str2 = NULL;
+	asprintf(&str1,"\"%s\":[", tag);
+
+	for (i=0;i<count;++i) {
+		if (i<(count-1)) {
+			asprintf(&str2, "%s\"%f\",", str1,v[i]);
+		} else {
+			asprintf(&str2, "%s\"%f\"", str1,v[i]);
+		}
+		free(str1);
+		str1=str2;
+		str2=NULL;
+	}
+	asprintf(&str2, "%s]\n", str1,v[i]);
+	fputs(str2,f);
+	free(str1);
+	free(str2);
+}
+
+void json_write_uint32(FILE* f, const char* tag, uint32_t v) {
+	fprintf(f, "\"%s\":\"%d\"\n", tag, v);
+}
+
+void json_write_float(FILE* f, const char* tag, float v) {
+	fprintf(f, "\"%s\":\"%f\"\n", tag, v);
+}
+
+void json_write_str(FILE* f, const char* tag, const char* v) {
+	fprintf(f, "\"%s\":\"%s\"\n", tag, v);
+}
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diff --git a/redist/json_helpers.h b/redist/json_helpers.h
new file mode 100644
index 0000000..8d6eb64
--- /dev/null
+++ b/redist/json_helpers.h
@@ -0,0 +1,14 @@
+// (C) 2017 <>< Joshua Allen, Under MIT/x11 License.
+
+#ifndef JSON_HELPERS_H
+#define JSON_HELPERS_H
+
+#include <stdint.h>
+
+void json_write_float_array(FILE* f, const char* tag, float* v, uint8_t count);
+void json_write_double_array(FILE* f, const char* tag, double* v, uint8_t count);
+void json_write_uint32(FILE* f, const char* tag, uint32_t v);
+void json_write_float(FILE* f, const char* tag, float v);
+void json_write_str(FILE* f, const char* tag, const char* v);
+
+#endif
\ No newline at end of file