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1.1 root 1: /* (-lgl
2: * COHERENT Version 4.0
3: * Copyright (c) 1982, 1992 by Mark Williams Company.
4: * All rights reserved. May not be copied without permission.
5: -lgl) */
6: /*
7: * misc.h
8: * Miscellaneous useful user functions.
9: * Sugggestions and additions are welcome.
10: */
11: #ifndef OFFSETOF
12:
13: /* Handy defines */
14: #define OFFSETOF(type, mem) (&((char *)((type *)NULL)->m) - NULL)
15: #define ENDOF(x) (((char *)(x))+sizeof(x)) /* end of some thing */
16: #define SETIN(a, b) !((a) & ~(b)) /* a in b */
17:
18: #ifdef M68000
19: #define ptrdiff(a, b) ((long)a - (long)b)
20: #else
21: #ifdef LARGE
22: #define ptrdiff(a, b) (((((long)a>>16)-((long)b>>16))<<4)+((int)a-(int)b))
23: #else
24: #define ptrdiff(a, b) ((int)a - (int)b)
25: #endif
26: #endif
27:
28: #include <stdio.h>
29: extern fatal(); /* like fprintf(stderr, ...); exit(1); */
30: extern char * getline();/* char * getline(FILE *fp, int *lineNo);
31: * gets lines off a file treats # to end of line
32: * as comment, discards \ [ \t\n] through end of
33: * line to create continuations. */
34: extern usage(); /* like fatal but message starts usage: */
35: extern FILE *xopen(); /* xopen(filename, access); fopen or die */
36: extern char *basename(); /* return the last filename on a path */
37: extern char *pathn(); /* pathn("helpfile", "LIBPATH", ",,\lib", "r");
38: * gets full pathname given an filename
39: * env var with path, default path and access rights */
40: extern xdump(); /* xdump(ptr, size) hex dumps an area */
41: extern long randl(); /* IEEE random number (random bits) */
42: extern srandl(); /* srandl(unsigned long s1, s2); */
43: extern unsigned short crc16(); /* crc16(char *p) calculate 16 bit crc */
44: extern char *ask(); /* ask(reply, msg);
45: * like printf(msg, ...) returns a user reply */
46: extern int yn(); /* like printf(msg, ...) returns yes=1 or no=0 reply */
47: extern char *alloc(); /* get space or die */
48: extern void banner(); /* banner("Done", 3) prints a banner saying
49: * Done with 3 spaces infront. */
50: extern int copyd(); /* copyd(FILE *outfile, FILE *infile, long length)
51: * Copys infile to outfile for length efficiently.
52: * on failure copys all it can read and returns 0.
53: * returns 1 on success */
54: extern strcmpl(); /* case insensative strcmp() */
55: extern char *lcase(); /* convert string to lower case */
56: extern char *ucase(); /* convert string to upper case */
57: extern char *newcpy(); /* make a malloced copy of a string */
58: extern char *match(); /* match(s1, pat, fin)
59: * finds pat in s1 by pnmatch rules
60: * returns start of pattern or NULL
61: * places pointer to end in *fin
62: */
63: extern char *replace(); /* replace(s1, pat, s3, all, matcher)
64: * search s1 for pat and replace by s3.
65: * Using matcher which is a pointer to
66: * a function that looks externally like match.
67: * Returns a new malloced string or NULL
68: * does all if all != 0 else first. */
69: extern char * span(); /* span(s1, matcher, fin)
70: * matches all chars passing function
71: * matcher. Looks like match. */
72: extern char * skip(); /* skip(s1, matcher, fin)
73: * matches all chars not passing function
74: * matcher. Looks like match. */
75: extern void tocont(); /* Enter NL to continue */
76: extern approx(); /* approx(double a, double b) 1 if == within epsilon */
77: extern double epsilon;
78: extern int is_fs(); /* is_fs(char *special) test if special is filesystem */
79: extern void vinit(); /* vinit(char * workFileName, unsigned storAmt);
80: * Init the software virtual system telling it how much
81: * storage it may use for buffers */
82: extern void vshutdown(); /* Shut down the virtual system and free its storage */
83: extern unsigned vopen(); /* vopen(long amt); Set up a virtual object amt
84: * bytes long and return a vid number. */
85: extern char *vfind(); /* vfind(int vid, long disp, int dirty);
86: * Point to a byte disp bytes into vid, set the
87: * dirty bit if dirty == 1 */
88: extern char *trim(); /* trim(char *s); remove trailing whitespace from s */
89: extern void splitter(); /* splitter(FILE *ofp, char *line, int limit)
90: * split line into limit size chunks by inserting
91: * \ \n and put the results to ofp. */
92: extern strchrtr();
93: /* strchrtr(char *from, char *to, int c, int d)
94: * Find c in from and return the corresponding char
95: * in to or def if there is none.
96: */
97: /*
98: * Definitions etc. for regexp(3) routines.
99: *
100: * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof],
101: * not the System V one.
102: *
103: * This is a modification of the University of Toronto regexp() package.
104: * Mostly to fit in cleanly with Coherent's libmisc. The original can
105: * be gotten free on mwcbbs.
106: */
107: #define NSUBEXP 10
108: typedef struct regexp {
109: char *startp[NSUBEXP];
110: char *endp[NSUBEXP];
111: char regstart; /* Internal use only. */
112: char reganch; /* Internal use only. */
113: char *regmust; /* Internal use only. */
114: int regmlen; /* Internal use only. */
115: char program[1]; /* Unwarranted chumminess with compiler. */
116: } regexp;
117:
118: extern regexp *regcomp();
119: extern int regexec();
120: extern void regsub();
121: extern void regerror();
122: /*
123: * The first byte of the regexp internal "program" is actually this magic
124: * number; the start node begins in the second byte.
125: */
126: #define REG_MAGIC (char)0234
127: #endif
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