--- /dev/null
+#include <string.h>
+#include "jansson_private.h"
+
+void jsonp_error_init(json_error_t *error, const char *source)
+{
+ if(error)
+ {
+ error->text[0] = '\0';
+ error->line = -1;
+ error->column = -1;
+ error->position = 0;
+ if(source)
+ jsonp_error_set_source(error, source);
+ else
+ error->source[0] = '\0';
+ }
+}
+
+void jsonp_error_set_source(json_error_t *error, const char *source)
+{
+ size_t length;
+
+ if(!error || !source)
+ return;
+
+ length = strlen(source);
+ if(length < JSON_ERROR_SOURCE_LENGTH)
+ strncpy(error->source, source, length + 1);
+ else {
+ size_t extra = length - JSON_ERROR_SOURCE_LENGTH + 4;
+ strncpy(error->source, "...", 3);
+ strncpy(error->source + 3, source + extra, length - extra + 1);
+ }
+}
+
+void jsonp_error_set(json_error_t *error, int line, int column,
+ size_t position, enum json_error_code code,
+ const char *msg, ...)
+{
+ va_list ap;
+
+ va_start(ap, msg);
+ jsonp_error_vset(error, line, column, position, code, msg, ap);
+ va_end(ap);
+}
+
+void jsonp_error_vset(json_error_t *error, int line, int column,
+ size_t position, enum json_error_code code,
+ const char *msg, va_list ap)
+{
+ if(!error)
+ return;
+
+ if(error->text[0] != '\0') {
+ /* error already set */
+ return;
+ }
+
+ error->line = line;
+ error->column = column;
+ error->position = (int)position;
+
+ vsnprintf(error->text, JSON_ERROR_TEXT_LENGTH - 1, msg, ap);
+ error->text[JSON_ERROR_TEXT_LENGTH - 2] = '\0';
+ error->text[JSON_ERROR_TEXT_LENGTH - 1] = code;
+}