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/*
* alloc.c: implementation of alloc.h
*/
#include "agedu.h"
#include "alloc.h"
extern void fatal(const char *, ...);
void *smalloc(size_t size) {
void *p;
p = malloc(size);
if (!p) {
fatal("out of memory");
}
return p;
}
void sfree(void *p) {
if (p) {
free(p);
}
}
void *srealloc(void *p, size_t size) {
void *q;
if (p) {
q = realloc(p, size);
} else {
q = malloc(size);
}
if (!q)
fatal("out of memory");
return q;
}
char *dupstr(const char *s) {
char *r = smalloc(1+strlen(s));
strcpy(r,s);
return r;
}
char *dupfmt(const char *fmt, ...)
{
int pass;
int totallen;
char *ret = NULL, *rp = NULL;
char datebuf[80];
va_list ap;
time_t t;
struct tm tm;
int got_time = 0;
datebuf[0] = '\0';
totallen = 0;
for (pass = 0; pass < 2; pass++) {
const char *p = fmt;
va_start(ap, fmt);
while (*p) {
const char *data = NULL;
int datalen = 0, stuffcr = 0, htmlesc = 0;
if (*p == '%') {
p++;
if (*p == 'D') {
if (!datebuf[0]) {
if (!got_time) {
t = time(NULL);
tm = *gmtime(&t);
got_time = 1;
}
strftime(datebuf, lenof(datebuf),
"%a, %d %b %Y %H:%M:%S GMT", &tm);
}
data = datebuf;
datalen = strlen(data);
} else if (*p == 'd') {
int i = va_arg(ap, int);
sprintf(datebuf, "%d", i);
data = datebuf;
datalen = strlen(data);
} else if (*p == 's') {
data = va_arg(ap, const char *);
datalen = strlen(data);
} else if (*p == 'h') {
htmlesc = 1;
data = va_arg(ap, const char *);
datalen = strlen(data);
} else if (assert(*p == 'S'), 1) {
stuffcr = va_arg(ap, int);
data = va_arg(ap, const char *);
datalen = strlen(data);
}
p++;
} else {
data = p;
while (*p && *p != '%') p++;
datalen = p - data;
}
if (pass == 0) {
while (datalen > 0) {
totallen++;
if (stuffcr && *data == '\n')
totallen++;
if (htmlesc &&
(*data == '<' || *data == '>' || *data == '&'))
totallen += 4; /* max(len("gt;"),len("amp;")) */
data++, datalen--;
}
} else {
while (datalen > 0) {
if (htmlesc && (*data < 32 || *data >= 127))
*rp++ = '?'; /* *shrug* */
else if (htmlesc && *data == '<')
rp += sprintf(rp, "<");
else if (htmlesc && *data == '>')
rp += sprintf(rp, ">");
else if (htmlesc && *data == '&')
rp += sprintf(rp, "&");
else if (stuffcr && *data == '\n')
*rp++ = '\r', *rp++ = '\n';
else
*rp++ = *data;
data++, datalen--;
}
}
}
va_end(ap);
if (pass == 0) {
rp = ret = snewn(totallen+1, char);
} else {
assert(rp - ret == totallen);
*rp = '\0';
}
}
return ret;
}
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