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/*
** Miscellaneous routines.
*/
#include "gate.h"
#if defined(RCSID)
static char RCS[] =
"$Header: /nfs/papaya/u2/rsalz/src/newsgate/RCS/misc.c,v 1.9 91/07/18 11:04:27 rsalz Exp $";
#endif /* defined(RCSID) */
/*
** Allocate memory.
*/
align_t
MyAlloc(i)
int i;
{
align_t p;
if ((p = (align_t)malloc((unsigned int)i)) == NULL) {
Fprintf(stderr, "%s: Could not allocate %d bytes: %s\n",
Pname, i, strerror(errno));
exit(EX_OSERR);
}
return p;
}
#if !defined(HAVE_STRERROR)
/*
** Return a printable representation of errno.
*/
char *
strerror(x)
int x;
{
static char buff[20];
if (x >= 0 && x < sys_nerr)
return sys_errlist[x];
Sprintf(buff, "Error code %d", x);
return buff;
}
#endif /* !defined(HAVE_STRERROR) */
/*
** Free up something that Split() made.
*/
void
SplitFree(p)
char ***p;
{
if (p && *p) {
free((*p)[0]);
free((char *)*p);
*p = NULL;
}
}
/*
** This is an AWK-style split routine. If the split character is NULL,
** we split on space or tab and eat long stretches of same (that is, no
** null fields will result). Returns number of fields made.
*/
int
Split(s, p, c)
register char *s;
char ***p;
register char c;
{
register char *cp;
register int blank;
register int n;
register int i;
if (s == NULL || *s == '\0') {
Fprintf(stderr, "%s: Someone was a pinhead!\n", Pname);
abort();
}
i = strlen(s) + 1;
cp = NEW(char, i);
/* This is too much -- we'll realloc what we really need later. */
*p = NEW(char*, i);
if (c == '\0') {
/* Eat multiple whitespace characters. */
for (blank = TRUE, n = 0; *s; s++)
if (WHITE(*s)) {
if (!blank)
*cp++ = '\0';
blank = TRUE;
}
else {
if (blank)
(*p)[n++] = cp;
*cp++ = *s;
blank = FALSE;
}
if (n == 0) {
(*p)[0] = cp;
SplitFree(p);
return 0;
}
}
else
/* Normal case: find all occurrences of "c" and null them as field
* terminators; add new string starts to the array of pointers to
* strings. */
for ((*p)[0] = cp, n = 1; *s; s++)
if (*s == c) {
*cp++ = '\0';
(*p)[n++] = cp;
}
else
*cp++ = *s;
/* Make sure the last string is terminated. */
*cp = '\0';
/* Free up the excess space. */
*p = (char **)REALLOC(*p, (n + 1) * sizeof (char *));
(*p)[n] = NULL;
return n;
}
/*
** Read in a file of lines, dump it into an array of strings.
*/
char **
ReadFile(Name)
char *Name;
{
register FILE *F;
register char **v;
register char *p;
register int i;
char **value;
char buff[SM_SIZE];
/* Open file, count number of lines therein. */
if ((F = fopen(Name, "r")) == NULL) {
perror(Name);
exit(EX_OSFILE);
}
for (i = 1; fgets(buff, sizeof buff, F); i++)
continue;
rewind(F);
for (v = value = NEW(char*, i); fgets(buff, sizeof buff, F); ) {
if ((p = IDX(buff, '\n')) != NULL)
*p = '\0';
if (buff[0] && buff[0] != '#')
*v++ = COPY(buff);
}
*v = NULL;
return value;
}
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