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Annotation of coherent/g/usr/lib/misc/local_misc.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * misc.h
        !             3:  * Miscellaneous useful user functions.
        !             4:  * Sugggestions and additions are welcome.
        !             5:  */
        !             6: #ifndef OFFSETOF
        !             7: 
        !             8: /* Handy defines */
        !             9: #define OFFSETOF(type, mem) (&((char *)((type *)NULL)->m) - NULL)
        !            10: #define ENDOF(x) (((char *)(x))+sizeof(x)) /* end of some thing */
        !            11: #define SETIN(a, b) !((a) & ~(b))      /* a in b */
        !            12: 
        !            13: #include <stdio.h>
        !            14: #include <sys/types.h>
        !            15: #include <time.h>
        !            16: 
        !            17: extern void fatal();   /* like fprintf(stderr, ...); exit(1); */
        !            18: extern char * getline();/* char * getline(FILE *fp, int *lineNo);
        !            19:                         * gets lines off a file treats # to end of line
        !            20:                         * as comment, discards \ [ \t\n] through end of
        !            21:                         * line to create continuations. */
        !            22: extern usage();                /* like fatal but message starts usage: */
        !            23: extern FILE *xopen();  /* xopen(filename, access); fopen or die */
        !            24: extern char *basename(); /* return the last filename on a path */
        !            25: extern char *pathn();  /* pathn("helpfile", "LIBPATH", ",,\lib", "r");
        !            26:                         * gets full pathname given an filename
        !            27:                         * env var with path, default path and access rights */
        !            28: extern xdump();                /* xdump(ptr, size) hex dumps an area */
        !            29: extern long randl();   /* IEEE random number (random bits) */
        !            30: extern srandl();       /* srandl(unsigned long s1, s2); */
        !            31: extern unsigned short crc16(); /* crc16(char *p) calculate 16 bit crc */
        !            32: extern char *ask();    /* ask(reply, msg);
        !            33:                         * like printf(msg, ...) returns a user reply */
        !            34: extern int yn();       /* like printf(msg, ...) returns yes=1 or no=0 reply */
        !            35: extern char *alloc();  /* get space or die */
        !            36: extern void banner();  /* banner("Done", 3) prints a banner saying
        !            37:                         * Done with 3 spaces infront. */
        !            38: extern int copyd();    /* copyd(FILE *outfile, FILE *infile, long length)
        !            39:                         * Copys infile to outfile for length efficiently.
        !            40:                         * on failure copys all it can read and returns 0.
        !            41:                         * returns 1 on success */
        !            42: extern strcmpl();      /* case insensative strcmp() */
        !            43: extern char *lcase();  /* convert string to lower case */
        !            44: extern char *ucase();  /* convert string to upper case */
        !            45: extern char *newcpy(); /* make a malloced copy of a string */
        !            46: extern char *match();  /* match(s1, pat, fin)
        !            47:                         * finds pat in s1 by pnmatch rules
        !            48:                         * returns start of pattern or NULL
        !            49:                         * places pointer to end in *fin
        !            50:                         */
        !            51: extern char *replace(); /* replace(s1, pat, s3, all, matcher)
        !            52:                         * search s1 for pat and replace by s3.
        !            53:                         * Using matcher which is a pointer to
        !            54:                         * a function that looks externally like match.
        !            55:                         * Returns a new malloced string or NULL
        !            56:                         * does all if all != 0 else first. */
        !            57: extern char * span();  /* span(s1, matcher, fin)
        !            58:                         * matches all chars passing function
        !            59:                         * matcher. Looks like match. */
        !            60: extern char * skip();  /* skip(s1, matcher, fin)
        !            61:                         * matches all chars not passing function
        !            62:                         * matcher. Looks like match. */
        !            63: extern void tocont();  /* Enter NL to continue */
        !            64: extern approx();       /* approx(double a, double b) 1 if == within epsilon */
        !            65: extern if_COHERENT();  /* returns 1 if Coherent else 0 */
        !            66: extern double epsilon;
        !            67: extern int is_fs();    /* is_fs(char *special) test if special is filesystem */
        !            68: extern void vinit();   /* vinit(char * workFileName, unsigned storAmt);
        !            69:                         * Init the software virtual system telling it how much
        !            70:                         * storage it may use for buffers */
        !            71: extern void vshutdown(); /* Shut down the virtual system and free its storage */
        !            72: extern unsigned vopen(); /* vopen(long amt); Set up a virtual object amt
        !            73:                          * bytes long and return a vid number. */
        !            74: extern char *vfind();  /* vfind(int vid, long disp, int dirty);
        !            75:                         * Point to a byte disp bytes into vid, set the
        !            76:                         * dirty bit if dirty == 1 */
        !            77: extern char *trim();   /* trim(char *s); remove trailing whitespace from s */
        !            78: extern void splitter(); /* splitter(FILE *ofp, char *line, int limit)
        !            79:                         * split line into limit size chunks by inserting
        !            80:                         * \ \n and put the results to ofp. */
        !            81: extern strchrtr();
        !            82:                        /* strchrtr(char *from, char *to, int c, int d)
        !            83:                         * Find c in from and return the corresponding char
        !            84:                         * in to or def if there is none.
        !            85:                         */
        !            86: char *kernelName();    /* return name of current kernel file */
        !            87: /*
        !            88:  * Julian day structure consists of the days and seconds since
        !            89:  * Greenwich mean noon of January 1st 4713 BC.
        !            90:  * COHERENT time_t is a variation of Julian time:
        !            91:  * it counts seconds from Julian day 2,440,587.5 (January 1, 1970).
        !            92:  */
        !            93: typedef struct tm tm_t;
        !            94: typedef struct { long j_d, j_s; } jday_t;
        !            95: #define COHEPOCH 2440587L              /* Julian day 1969.12.31 12h00m00s */
        !            96: 
        !            97: jday_t time_to_jday();                 /* COHERENT time into Julian date */
        !            98: time_t jday_to_time();                 /* Julian date to COHERENT time */
        !            99: jday_t tm_to_jday();                   /* tm structure into Julian date */
        !           100: tm_t  *jday_to_tm();                   /* Julian date into tm_t structure */
        !           101: 
        !           102: /*
        !           103:  * Definitions etc. for regexp(3) routines.
        !           104:  *
        !           105:  * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
        !           106:  * not the System V one.
        !           107:  *
        !           108:  * This is a modification of the University of Toronto regexp() package.
        !           109:  * Mostly to fit in cleanly with Coherent's libmisc. The original can
        !           110:  * be gotten free on mwcbbs.
        !           111:  */
        !           112: #define NSUBEXP  10
        !           113: typedef struct regexp {
        !           114:        char *startp[NSUBEXP];
        !           115:        char *endp[NSUBEXP];
        !           116:        char regstart;          /* Internal use only. */
        !           117:        char reganch;           /* Internal use only. */
        !           118:        char *regmust;          /* Internal use only. */
        !           119:        int regmlen;            /* Internal use only. */
        !           120:        char program[1];        /* Unwarranted chumminess with compiler. */
        !           121: } regexp;
        !           122: 
        !           123: extern regexp *regcomp();
        !           124: extern int regexec();
        !           125: extern void regsub();
        !           126: extern void regerror();
        !           127: /*
        !           128:  * The first byte of the regexp internal "program" is actually this magic
        !           129:  * number; the start node begins in the second byte.
        !           130:  */
        !           131: #define        REG_MAGIC       (char)0234
        !           132: #endif

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