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/* File: z-util.c */
/* Purpose: Low level utilities -BEN- */
#include "z-util.h"
#include <assert.h>
/*
* Determine if string "t" is equal to string "t"
*/
bool_ streq(cptr a, cptr b)
{
if ((a == NULL) && (b == NULL)) { return TRUE; }
if (a == NULL) { return FALSE; }
if (b == NULL) { return FALSE; }
return (!strcmp(a, b));
}
/*
* Determine if string "t" is a suffix of string "s"
*/
bool_ suffix(cptr s, cptr t)
{
int tlen = strlen(t);
int slen = strlen(s);
/* Check for incompatible lengths */
if (tlen > slen) return (FALSE);
/* Compare "t" to the end of "s" */
return (!strcmp(s + slen - tlen, t));
}
/**
* Captialize letter
*/
void capitalize(char *s)
{
char *p = s;
assert(s != NULL);
for (; *p; p++)
{
if (!isspace(*p))
{
if (islower(*p))
{
*p = toupper(*p);
}
/* Done */
break;
}
}
}
/*
* Redefinable "plog" action
*/
void (*plog_aux)(cptr) = NULL;
/*
* Print (or log) a "warning" message (ala "perror()")
* Note the use of the (optional) "plog_aux" hook.
*/
void plog(cptr str)
{
/* Use the "alternative" function if possible */
if (plog_aux) (*plog_aux)(str);
/* Just do a labeled fprintf to stderr */
else (void)(fprintf(stderr, "%s\n", str));
}
/*
* Redefinable "quit" action
*/
void (*quit_aux)(cptr) = NULL;
/*
* Exit (ala "exit()"). If 'str' is NULL, do "exit(0)".
* If 'str' begins with "+" or "-", do "exit(atoi(str))".
* Otherwise, plog() 'str' and exit with an error code of -1.
* But always use 'quit_aux', if set, before anything else.
*/
void quit(cptr str)
{
/* Attempt to use the aux function */
if (quit_aux) (*quit_aux)(str);
/* Success */
if (!str) (void)(exit(0));
/* Extract a "special error code" */
if ((str[0] == '-') || (str[0] == '+')) (void)(exit(atoi(str)));
/* Send the string to plog() */
plog(str);
/* Failure */
(void)(exit( -1));
}
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