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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: #ifdef M68000
14: #define ptrdiff(a, b) ((long)a - (long)b)
15: #else
16: #ifdef LARGE
17: #define ptrdiff(a, b) (((((long)a>>16)-((long)b>>16))<<4)+((int)a-(int)b))
18: #else
19: #define ptrdiff(a, b) ((int)a - (int)b)
20: #endif
21: #endif
22:
23: #include <stdio.h>
24: extern fatal(); /* like fprintf(stderr, ...); exit(0); */
25: extern char * getline();/* char * getline(FILE *fp, int *lineNo);
26: * gets lines off a file treats # to end of line
27: * as comment, discards \ [ \t\n] through end of
28: * line to create continuations. */
29: extern usage(); /* like fatal but message starts usage: */
30: extern FILE *xopen(); /* xopen(filename, access); fopen or die */
31: extern char *pathn(); /* pathn("helpfile", "LIBPATH", ",,\lib", "r");
32: * gets full pathname given an filename
33: * env var with path, default path and access rights */
34: extern xdump(); /* xdump(ptr, size) hex dumps an area */
35: extern long randl(); /* IEEE random number (random bits) */
36: extern srandl(); /* srandl(unsigned long s1, s2); */
37: extern unsigned short crc16(); /* crc16(char *p) calculate 16 bit crc */
38: extern char *ask(); /* ask(reply, msg);
39: * like printf(msg, ...) returns a user reply */
40: extern int yn(); /* like printf(msg, ...) returns yes=1 or no=0 reply */
41: extern char *alloc(); /* get space or die */
42: extern void banner(); /* banner("Done", 3) prints a banner saying
43: * Done with 3 spaces infront. */
44: extern strcmpl(); /* case insensative strcmp() */
45: extern char *lcase(); /* convert string to lower case */
46: extern char *ucase(); /* convert string to upper case */
47: extern char *newcpy(); /* make a malloced copy of a string */
48: extern char *match(); /* match(s1, pat, fin)
49: * finds pat in s1 by pnmatch rules
50: * returns start of pattern or NULL
51: * places pointer to end in *fin
52: */
53: extern char *replace(); /* replace(s1, pat, s3, all, matcher)
54: * search s1 for pat and replace by s3.
55: * Using matcher which is a pointer to
56: * a function that looks externally like match.
57: * Returns a new malloced string or NULL
58: * does all if all != 0 else first. */
59: extern char * span(); /* span(s1, matcher, fin)
60: * matches all chars passing function
61: * matcher. Looks like match. */
62: extern char * skip(); /* skip(s1, matcher, fin)
63: * matches all chars not passing function
64: * matcher. Looks like match. */
65: extern approx(); /* approx(double a, double b) 1 if == within epsilon */
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: /*
87: * Definitions etc. for regexp(3) routines.
88: *
89: * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof],
90: * not the System V one.
91: *
92: * This is a modification of the University of Toronto regexp() package.
93: * Mostly to fit in cleanly with Coherent's libmisc. The original can
94: * be gotten free on mwcbbs.
95: */
96: #define NSUBEXP 10
97: typedef struct regexp {
98: char *startp[NSUBEXP];
99: char *endp[NSUBEXP];
100: char regstart; /* Internal use only. */
101: char reganch; /* Internal use only. */
102: char *regmust; /* Internal use only. */
103: int regmlen; /* Internal use only. */
104: char program[1]; /* Unwarranted chumminess with compiler. */
105: } regexp;
106:
107: extern regexp *regcomp();
108: extern int regexec();
109: extern void regsub();
110: extern void regerror();
111: /*
112: * The first byte of the regexp internal "program" is actually this magic
113: * number; the start node begins in the second byte.
114: */
115: #define REG_MAGIC (char)0234
116: #endif
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