| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: wordfile.c,v 2.15 2005/06/10 16:42:11 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Load whitespace separated words from a file into an array. |
| 6 |
* Assume the passed pointer array is big enough to hold them all. |
| 7 |
* |
| 8 |
* External symbols declared in standard.h |
| 9 |
*/ |
| 10 |
|
| 11 |
#include "copyright.h" |
| 12 |
|
| 13 |
#include <ctype.h> |
| 14 |
#include <string.h> |
| 15 |
#include <stdio.h> |
| 16 |
#include <sys/types.h> |
| 17 |
#include <sys/stat.h> |
| 18 |
#include <fcntl.h> |
| 19 |
|
| 20 |
#include "platform.h" |
| 21 |
#include "standard.h" |
| 22 |
|
| 23 |
|
| 24 |
#ifndef MAXFLEN |
| 25 |
#define MAXFLEN 204800 /* file must be smaller than this */ |
| 26 |
#endif |
| 27 |
|
| 28 |
|
| 29 |
int |
| 30 |
wordfile( /* get words from fname, put in words */ |
| 31 |
char **words, |
| 32 |
int nargs, |
| 33 |
char *fname |
| 34 |
) |
| 35 |
{ |
| 36 |
int fd; |
| 37 |
char buf[MAXFLEN]; |
| 38 |
int n; |
| 39 |
/* load file into buffer */ |
| 40 |
if (fname == NULL) |
| 41 |
return(-1); /* no filename */ |
| 42 |
if ((fd = open(fname, 0)) < 0) |
| 43 |
return(-1); /* open error */ |
| 44 |
n = read(fd, buf, MAXFLEN); |
| 45 |
close(fd); |
| 46 |
if (n < 0) /* read error */ |
| 47 |
return(-1); |
| 48 |
if (n == MAXFLEN) /* file too big, take what we can */ |
| 49 |
while (!isspace(buf[--n])) |
| 50 |
if (n <= 0) /* one long word! */ |
| 51 |
return(-1); |
| 52 |
buf[n] = '\0'; /* terminate */ |
| 53 |
return(wordstring(words, nargs, buf)); /* wordstring does the rest */ |
| 54 |
} |
| 55 |
|
| 56 |
|
| 57 |
int |
| 58 |
wordstring( /* allocate and load argument list */ |
| 59 |
char **avl, |
| 60 |
int nargs, |
| 61 |
char *str |
| 62 |
) |
| 63 |
{ |
| 64 |
char *cp, **ap; |
| 65 |
|
| 66 |
if (str == NULL) |
| 67 |
return(-1); |
| 68 |
cp = bmalloc(strlen(str)+1); |
| 69 |
if (cp == NULL) /* ENOMEM */ |
| 70 |
return(-1); |
| 71 |
strcpy(cp, str); |
| 72 |
/* parse into words */ |
| 73 |
for (ap = avl; ap-avl < nargs-1; ap++) { |
| 74 |
while (isspace(*cp)) /* nullify spaces */ |
| 75 |
*cp++ = '\0'; |
| 76 |
if (!*cp) /* all done? */ |
| 77 |
break; |
| 78 |
*ap = cp; /* add argument to list */ |
| 79 |
while (*++cp && !isspace(*cp)) |
| 80 |
; |
| 81 |
} |
| 82 |
*ap = NULL; |
| 83 |
return(ap - avl); |
| 84 |
} |
