parseErrorLineNo.diff

   1   Show the line number at which a parse error occured
   2
   3   This patch counts the number of newlines from the start of the source buffer
   4   whose parse has failed. This will be the line number in a macro or macro file
   5   where the error was detected. If an error is found in the parsing of the
   6   NEdit configuration (nedit.rc), the line number is that of the unit being
   7   parsed, not the whole file.
   8
   9 ---
  10
  11  source/preferences.c |   17 +++++++++++++----
  12  1 files changed, 13 insertions(+), 4 deletions(-)
  13
  14 diff --quilt old/source/preferences.c new/source/preferences.c
  15 --- old/source/preferences.c
  16 +++ new/source/preferences.c
  17 @@ -5668,33 +5668,42 @@ int ParseError(Widget toDialog, const ch
  18         const char *errorIn, const char *message)
  19  {
  20      int len, nNonWhite = 0;
  21      const char *c;
  22      char *errorLine;
  23 -
  24 +    int lineNo = 1;
  25 +
  26      for (c=stoppedAt; c>=stringStart; c--) {
  27         if (c == stringStart)
  28             break;
  29         else if (*c == '\n' && nNonWhite >= 5)
  30             break;
  31         else if (*c != ' ' && *c != '\t')
  32             nNonWhite++;
  33      }
  34 +
  35 +    for (; stringStart <= c; ++stringStart) {
  36 +        if (*stringStart == '\n')
  37 +            ++lineNo;
  38 +    }
  39 +
  40      len = stoppedAt - c + (*stoppedAt == '\0' ? 0 : 1);
  41      errorLine = XtMalloc(len+4);
  42      strncpy(errorLine, c, len);
  43      errorLine[len++] = '<';
  44      errorLine[len++] = '=';
  45      errorLine[len++] = '=';
  46      errorLine[len] = '\0';
  47      if (toDialog == NULL)
  48      {
  49 -        fprintf(stderr, "NEdit: %s in %s:\n%s\n", message, errorIn, errorLine);
  50 +        fprintf(stderr, "NEdit: %s in %s:%d:\n%s\n",
  51 +                message, errorIn, lineNo, errorLine);
  52      } else
  53      {
  54 -        DialogF(DF_WARN, toDialog, 1, "Parse Error", "%s in %s:\n%s", "OK",
  55 -                message, errorIn, errorLine);
  56 +        DialogF(DF_WARN, toDialog, 1,
  57 +                "Parse Error", "%s in %s:%d:\n%s", "OK",
  58 +                message, errorIn, lineNo, errorLine);
  59      }
  60      XtFree(errorLine);
  61      return False;
  62  }
  63