client/deps/jansson/error.c

   1 #include <string.h>
   2 #include "jansson_private.h"
   3
   4 void jsonp_error_init(json_error_t *error, const char *source) {
   5     if (error) {
   6         error->text[0] = '\0';
   7         error->line = -1;
   8         error->column = -1;
   9         error->position = 0;
  10         if (source)
  11             jsonp_error_set_source(error, source);
  12         else
  13             error->source[0] = '\0';
  14     }
  15 }
  16
  17 void jsonp_error_set_source(json_error_t *error, const char *source) {
  18     size_t length;
  19
  20     if (!error || !source)
  21         return;
  22
  23     length = strlen(source);
  24     if (length < JSON_ERROR_SOURCE_LENGTH) {
  25         strncpy(error->source, source, JSON_ERROR_SOURCE_LENGTH - 1);
  26     } else {
  27         size_t extra = length - JSON_ERROR_SOURCE_LENGTH + 4;
  28         memcpy(error->source, "...", 3);
  29         strncpy(error->source + 3, source + extra, length - extra + 1);
  30     }
  31 }
  32
  33 void jsonp_error_set(json_error_t *error, int line, int column,
  34                      size_t position, enum json_error_code code,
  35                      const char *msg, ...) {
  36     va_list ap;
  37     va_start(ap, msg);
  38     jsonp_error_vset(error, line, column, position, code, msg, ap);
  39     va_end(ap);
  40 }
  41
  42 void jsonp_error_vset(json_error_t *error, int line, int column,
  43                       size_t position, enum json_error_code code,
  44                       const char *msg, va_list ap) {
  45     if (!error)
  46         return;
  47
  48     if (error->text[0] != '\0') {
  49         /* error already set */
  50         return;
  51     }
  52
  53     error->line = line;
  54     error->column = column;
  55     error->position = (int)position;
  56
  57     vsnprintf(error->text, JSON_ERROR_TEXT_LENGTH - 1, msg, ap);
  58     error->text[JSON_ERROR_TEXT_LENGTH - 2] = '\0';
  59     error->text[JSON_ERROR_TEXT_LENGTH - 1] = code;
  60 }