| 1 | /**************************************************************************
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| 2 | *
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| 3 | * utils.h -- Functions which are common utilities for the image programs
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| 4 | * Copyright (C) 1994 Stuart Inglis
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | * $Id: utils.h 15660 2008-05-22 23:04:31Z mdewsnip $
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| 21 | *
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| 22 | **************************************************************************/
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| 23 |
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| 24 | #ifndef __UTILS_H
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| 25 | #define __UTILS_H
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| 26 |
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| 27 | #include "sysfuncs.h"
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| 28 |
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| 29 | extern int V;
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| 30 |
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| 31 | #define DEBUG
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| 32 |
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| 33 | #ifndef min
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| 34 | #define min(a,b) ((a)<(b) ? (a) : (b))
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| 35 | #endif
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| 36 | #ifndef max
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| 37 | #define max(a,b) ((a)>(b) ? (a) : (b))
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| 38 | #endif
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| 39 |
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| 40 | #define GEN_MAGIC(a,b,c,d) ((unsigned long)(((a)<<24) + ((b)<<16) + \
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| 41 | ((c)<<8) + (d)))
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| 42 |
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| 43 | /* --- MG magic file codes [TS:Aug/95] --- */
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| 44 | #define MAGIC_FELICS GEN_MAGIC('M','G','F','X')
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| 45 | #define MAGIC_BILEVEL GEN_MAGIC('M','G','B','I')
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| 46 | #define MAGIC_TIC GEN_MAGIC('M','G','T','C')
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| 47 | #define IS_MAGIC(a) ((((u_long)(a)) & 0xffff0000) == MAGIC_XXXX)
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| 48 | /* --------------------------------------- */
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| 49 |
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| 50 | #define MAGIC_P1 0x5031 /* P1 - pbm */
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| 51 | #define MAGIC_P2 0x5032 /* P2 - pgm */
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| 52 | #define MAGIC_P3 0x5033 /* P3 - ppm */
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| 53 | #define MAGIC_P4 0x5034 /* P4 - rawbits pbm */
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| 54 | #define MAGIC_P5 0x5035 /* P5 - rawbits pgm */
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| 55 | #define MAGIC_P6 0x5036 /* P6 - rawbits ppm */
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| 56 |
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| 57 | int isEOF (FILE * fp);
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| 58 | int getmagicno_byte (FILE * fp);
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| 59 | int getmagicno_short (FILE * fp);
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| 60 | int getmagicno_short_pop (FILE * fp);
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| 61 | int getmagicno_long (FILE * fp);
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| 62 |
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| 63 |
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| 64 |
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| 65 | void error_msg (char *prog, char *message, char *extra);
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| 66 | void warn (char *prog, char *message, char *extra);
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| 67 |
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| 68 | void readline (char str[], FILE * fp);
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| 69 |
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| 70 | void magic_write (FILE * fp, u_long magic_num);
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| 71 | void magic_check (FILE * fp, u_long magic_num);
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| 72 | u_long magic_read (FILE * fp);
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| 73 | /* kerry's code */
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| 74 |
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| 75 | int getint (FILE * fp);
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| 76 | unsigned int gethint (FILE * fp);
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| 77 | int isinteger (char s[]);
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| 78 |
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| 79 | #endif
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