A while back, Andrew and I talked about making the debug parsing code a

better "fit" with other Samba code.  This is a small first step toward
doing what (I think) we agreed to do.

I've moved the key function from ubiqx/debugparse.c into lib/debug.c.  I
have also moved the enum from ubiqx/debugparse.h into the debug section in
smb.h.

The next thing to do is to get debug2html added into the Makefile.in so
that it is always produced when compiling the suite.

Chris -)-----
(This used to be commit 782474f41e0c2bc0b1f098758a3e5cb44e87d8b1)

1 files changed, 159 insertions, 1 deletions

diff --git a/source3/lib/debug.c b/source3/lib/debug.c
index 3a90da2f3d..ab11d81a21 100644
--- a/source3/lib/debug.c
+++ b/source3/lib/debug.c
@@ -125,7 +125,6 @@ static int     format_pos     = 0;
  * tells us if interactive logging was requested
  * ************************************************************************** **
  */
-
 BOOL dbg_interactive(void)
 {
 	return stdout_logging;
@@ -597,4 +596,163 @@ BOOL dbghdr( int level, char *file, char *func, int line )
 
 #endif
 
+dbg_Token dbg_char2token( dbg_Token *state, int c )
+  /* ************************************************************************ **
+   * Parse input one character at a time.
+   *
+   *  Input:  state - A pointer to a token variable.  This is used to
+   *                  maintain the parser state between calls.  For
+   *                  each input stream, you should set up a separate
+   *                  state variable and initialize it to dbg_null.
+   *                  Pass a pointer to it into this function with each
+   *                  character in the input stream.  See dbg_test()
+   *                  for an example.
+   *          c     - The "current" character in the input stream.
+   *
+   *  Output: A token.
+   *          The token value will change when delimiters are found,
+   *          which indicate a transition between syntactical objects.
+   *          Possible return values are:
+   *
+   *          dbg_null        - The input character was an end-of-line.
+   *                            This resets the parser to its initial state
+   *                            in preparation for parsing the next line.
+   *          dbg_eof         - Same as dbg_null, except that the character
+   *                            was an end-of-file.
+   *          dbg_ignore      - Returned for whitespace and delimiters.
+   *                            These lexical tokens are only of interest
+   *                            to the parser.
+   *          dbg_header      - Indicates the start of a header line.  The
+   *                            input character was '[' and was the first on
+   *                            the line.
+   *          dbg_timestamp   - Indicates that the input character was part
+   *                            of a header timestamp.
+   *          dbg_level       - Indicates that the input character was part
+   *                            of the debug-level value in the header.
+   *          dbg_sourcefile  - Indicates that the input character was part
+   *                            of the sourcefile name in the header.
+   *          dbg_function    - Indicates that the input character was part
+   *                            of the function name in the header.
+   *          dbg_lineno      - Indicates that the input character was part
+   *                            of the DEBUG call line number in the header.
+   *          dbg_message     - Indicates that the input character was part
+   *                            of the DEBUG message text.
+   *
+   * ************************************************************************ **
+   */
+  {
+  /* The terminating characters that we see will greatly depend upon
+   * how they are read.  For example, if gets() is used instead of
+   * fgets(), then we will not see newline characters.  A lot also
+   * depends on the calling function, which may handle terminators
+   * itself.
+   *
+   * '\n', '\0', and EOF are all considered line terminators.  The
+   * dbg_eof token is sent back if an EOF is encountered.
+   *
+   * Warning:  only allow the '\0' character to be sent if you are
+   *           using gets() to read whole lines (thus replacing '\n'
+   *           with '\0').  Sending '\0' at the wrong time will mess
+   *           up the parsing.
+   */
+  switch( c )
+    {
+    case EOF:
+      *state = dbg_null;   /* Set state to null (initial state) so */
+      return( dbg_eof );   /* that we can restart with new input.  */
+    case '\n':
+    case '\0':
+      *state = dbg_null;   /* A newline or eoln resets to the null state. */
+      return( dbg_null );
+    }
+
+  /* When within the body of the message, only a line terminator
+   * can cause a change of state.  We've already checked for line
+   * terminators, so if the current state is dbg_msgtxt, simply
+   * return that as our current token.
+   */
+  if( dbg_message == *state )
+    return( dbg_message );
+
+  /* If we are at the start of a new line, and the input character 
+   * is an opening bracket, then the line is a header line, otherwise
+   * it's a message body line.
+   */
+  if( dbg_null == *state )
+    {
+    if( '[' == c )
+      {
+      *state = dbg_timestamp;
+      return( dbg_header );
+      }
+    *state = dbg_message;
+    return( dbg_message );
+    }
+
+  /* We've taken care of terminators, text blocks and new lines.
+   * The remaining possibilities are all within the header line
+   * itself.
+   */
+
+  /* Within the header line, whitespace can be ignored *except*
+   * within the timestamp.
+   */
+  if( isspace( c ) )
+    {
+    /* Fudge.  The timestamp may contain space characters. */
+    if( (' ' == c) && (dbg_timestamp == *state) )
+      return( dbg_timestamp );
+    /* Otherwise, ignore whitespace. */
+    return( dbg_ignore );
+    }
+
+  /* Okay, at this point we know we're somewhere in the header.
+   * Valid header *states* are: dbg_timestamp, dbg_level,
+   * dbg_sourcefile, dbg_function, and dbg_lineno.
+   */
+  switch( c )
+    {
+    case ',':
+      if( dbg_timestamp == *state )
+        {
+        *state = dbg_level;
+        return( dbg_ignore );
+        }
+      break;
+    case ']':
+      if( dbg_level == *state )
+        {
+        *state = dbg_sourcefile;
+        return( dbg_ignore );
+        }
+      break;
+    case ':':
+      if( dbg_sourcefile == *state )
+        {
+        *state = dbg_function;
+        return( dbg_ignore );
+        }
+      break;
+    case '(':
+      if( dbg_function == *state )
+        {
+        *state = dbg_lineno;
+        return( dbg_ignore );
+        }
+      break;
+    case ')':
+      if( dbg_lineno == *state )
+        {
+        *state = dbg_null;
+        return( dbg_ignore );
+        }
+      break;
+    }
+
+  /* If the previous block did not result in a state change, then
+   * return the current state as the current token.
+   */
+  return( *state );
+  } /* dbg_char2token */
+
 /* ************************************************************************** */