printf-parse.h

00001 /* Parse printf format string.
00002    Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
00003 
00004    This program is free software; you can redistribute it and/or modify
00005    it under the terms of the GNU Lesser General Public License as published by
00006    the Free Software Foundation; either version 2.1, or (at your option)
00007    any later version.
00008 
00009    This program is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012    GNU Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public License along
00015    with this program; if not, write to the Free Software Foundation,
00016    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
00017 
00018 #ifndef _PRINTF_PARSE_H
00019 #define _PRINTF_PARSE_H
00020 
00021 #include "printf-args.h"
00022 
00023 
00024 /* Flags */
00025 #define FLAG_GROUP       1      /* ' flag */
00026 #define FLAG_LEFT        2      /* - flag */
00027 #define FLAG_SHOWSIGN    4      /* + flag */
00028 #define FLAG_SPACE       8      /* space flag */
00029 #define FLAG_ALT        16      /* # flag */
00030 #define FLAG_ZERO       32
00031 
00032 /* arg_index value indicating that no argument is consumed.  */
00033 #define ARG_NONE        (~(size_t)0)
00034 
00035 /* A parsed directive.  */
00036 typedef struct
00037 {
00038   const char* dir_start;
00039   const char* dir_end;
00040   int flags;
00041   const char* width_start;
00042   const char* width_end;
00043   size_t width_arg_index;
00044   const char* precision_start;
00045   const char* precision_end;
00046   size_t precision_arg_index;
00047   char conversion; /* d i o u x X f e E g G c s p n U % but not C S */
00048   size_t arg_index;
00049 }
00050 char_directive;
00051 
00052 /* A parsed format string.  */
00053 typedef struct
00054 {
00055   size_t count;
00056   char_directive *dir;
00057   size_t max_width_length;
00058   size_t max_precision_length;
00059 }
00060 char_directives;
00061 
00062 
00063 /* Parses the format string.  Fills in the number N of directives, and fills
00064    in directives[0], ..., directives[N-1], and sets directives[N].dir_start
00065    to the end of the format string.  Also fills in the arg_type fields of the
00066    arguments and the needed count of arguments.  */
00067 #ifdef STATIC
00068 STATIC
00069 #else
00070 extern
00071 #endif
00072 int printf_parse (const char *format, char_directives *d, arguments *a);
00073 
00074 #endif /* _PRINTF_PARSE_H */

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