/* pm.h - interface to format-independent part of libpbm. ** ** Copyright (C) 1988, 1989, 1991 by Jef Poskanzer. ** ** Permission to use, copy, modify, and distribute this software and its ** documentation for any purpose and without fee is hereby granted, provided ** that the above copyright notice appear in all copies and that both that ** copyright notice and this permission notice appear in supporting ** documentation. This software is provided "as is" without express or ** implied warranty. */ #ifndef _PM_H_ #define _PM_H_ #include "pm_config.h" #include #include #include #include #include #ifdef VMS #include #endif #undef MAX #define MAX(a,b) ((a) > (b) ? (a) : (b)) #undef MIN #define MIN(a,b) ((a) < (b) ? (a) : (b)) #undef ABS #define ABS(a) ((a) >= 0 ? (a) : -(a)) #undef SGN #define SGN(a) (((a)<0) ? -1 : 1) #undef ODD #define ODD(n) ((n) & 1) #undef ROUND #define ROUND(X) (((X) >= 0) ? (int)((X)+0.5) : (int)((X)-0.5)) #undef ROUNDU #define ROUNDU(X) ((unsigned int)((X)+0.5)) #undef SQR #define SQR(a) ((a)*(a)) /* Definitions to make Netpbm programs work with either ANSI C or C Classic. This is obsolete, as all compilers recognize the ANSI syntax now. We are slowly removing all the ARGS invocations from the programs (and replacing them with explicit ANSI syntax), but we have a lot of programs where we have removed ARGS from the definition but not the prototype, and we have discovered that the Sun compiler considers the resulting mismatch between definition and prototype to be an error. So we make ARGS create the ANSI syntax unconditionally to avoid having to fix all those mismatches. */ #if 0 #if __STDC__ #define ARGS(alist) alist #else /*__STDC__*/ #define ARGS(alist) () #define const #endif /*__STDC__*/ #endif #define ARGS(alist) alist extern int pm_plain_output; /* Output functions are to produce plain (as opposed to raw) format regardless of their 'plainformat' arguments. */ void pm_init(const char * const progname, unsigned int const flags); void pm_proginit(int* const argcP, char* argv[]); void pm_setMessage(int const newState, int * const oldStateP); FILE * pm_tmpfile(void); void pm_nextimage(FILE * const file, int * const eofP); /* Variable-sized arrays definitions. */ char** pm_allocarray (int const cols, int const rows, int const size ); char* pm_allocrow (int const cols, int const size); void pm_freearray (char** const its, int const rows); void pm_freerow(char* const itrow); /* Obsolete -- use shhopt instead */ int pm_keymatch (char* const str, const char* const keyword, int const minchars); int pm_maxvaltobits (int const maxval); int pm_bitstomaxval (int const bits); unsigned int pm_lcm (const unsigned int x, const unsigned int y, const unsigned int z, const unsigned int limit); /* GNU_PRINTF_ATTR lets the GNU compiler check pm_message() and pm_error() calls to be sure the arguments match the format string, thus preventing runtime segmentation faults and incorrect messages. */ #ifdef __GNUC__ #define GNU_PRINTF_ATTR __attribute__ ((format (printf, 1,2))) #else #define GNU_PRINTF_ATTR #endif void GNU_PRINTF_ATTR pm_message (const char format[], ...); void GNU_PRINTF_ATTR pm_error (const char reason[], ...); /* Obsolete - use helpful error message instead */ void pm_perror (const char reason[]); /* Obsolete - use shhopt and man page instead */ void pm_usage (const char usage[]); FILE* pm_openr (const char* const name); FILE* pm_openw (const char* const name); FILE * pm_openr_seekable(const char name[]); void pm_close (FILE* const f); void pm_closer (FILE* const f); void pm_closew (FILE* const f); int pm_readbigshort(FILE * const in, short * const sP); static __inline__ int pm_readbigshortu(FILE* const in, unsigned short * const sP) { return pm_readbigshort(in, (short *) sP); } int pm_writebigshort(FILE * const out, short const s); static __inline__ int pm_writebigshortu(FILE * const out, unsigned short const s) { return pm_writebigshort(out, (short) s); } int pm_readbiglong(FILE * const in, long * const lP); static __inline__ int pm_readbiglongu(FILE * const in, unsigned long * const lP) { return pm_readbiglong(in, (long *) lP); } int pm_writebiglong(FILE * const out, long const l); static __inline__ int pm_writebiglongu(FILE * const out, unsigned long const l) { return pm_writebiglong(out, (long) l); } int pm_readlittleshort(FILE * const in, short * const sP); static __inline__ int pm_readlittleshortu(FILE * const in, unsigned short * const sP) { return pm_readlittleshort(in, (short *) sP); } int pm_writelittleshort(FILE * const out, short const s); static __inline__ int pm_writelittleshortu(FILE * const out, unsigned short const s) { return pm_writelittleshort(out, (short) s); } int pm_readlittlelong(FILE * const in, long * const lP); static __inline__ int pm_readlittlelongu(FILE * const in, unsigned long * const lP) { return pm_readlittlelong(in, (long *) lP); } int pm_writelittlelong(FILE * const out, long const l); static __inline__ int pm_writelittlelongu(FILE * const out, unsigned long const l) { return pm_writelittlelong(out, (long) l); } int pm_readmagicnumber(FILE * const ifP); char* pm_read_unknown_size(FILE* const file, long* const buf); unsigned int pm_tell(FILE * const fileP); void pm_tell2(FILE * const fileP, pm_filepos * const fileposP, unsigned int const fileposSize); void pm_seek2(FILE * const fileP, const pm_filepos * const fileposP, unsigned int const fileposSize); void pm_seek(FILE * const fileP, unsigned long filepos); enum pm_check_code { PM_CHECK_OK, PM_CHECK_UNKNOWN_TYPE, PM_CHECK_TOO_LONG, PM_CHECK_UNCHECKABLE, PM_CHECK_TOO_SHORT }; enum pm_check_type { PM_CHECK_BASIC }; void pm_check(FILE * const file, enum pm_check_type const check_type, pm_filepos const need_raster_size, enum pm_check_code * const retval_p); char * pm_arg0toprogname(const char arg0[]); #endif