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#include <malloc.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stddef.h>
#include "config.h"
#include "String.h"
#include "Exceptions.h"
#include "General.h"
char GeneralException::t[BUFSIZ];
GeneralException::GeneralException(String emsg) : msg(emsg.strdup()) {
#ifdef DEBUG
cerr << "Generating a General Exception error: '" << msg << "'.\n";
#endif
}
GeneralException::GeneralException() : msg(0) {
#ifdef DEBUG
cerr << "Generating a General Exception error: '" << msg << "'.\n";
#endif
}
GeneralException::GeneralException(const GeneralException & e) : msg(strdup(e.msg)) {
#ifdef DEBUG
cerr << "Generating a General Exception error: '" << msg << "'.\n";
#endif
}
GeneralException::~GeneralException() {
free(msg);
}
char * GeneralException::GetMsg() {
return msg;
}
MemoryException::MemoryException(ssize_t s) {
sprintf(t, _("Failed allocating %ld bytes."), s);
msg = strdup(t);
}
IOException::IOException(String fn, op_t op, ssize_t s) {
sprintf(t, _("An error has occured while %s %ld bytes on %s: %s"), op == IO_WRITE ? _("writing") : _("reading"),
s, fn.to_charp(), strerror(errno));
msg = strdup(t);
}
IOGeneral::IOGeneral(String fn) : GeneralException(fn) { }
IOGeneral::IOGeneral() { }
IOAgain::IOAgain() : IOGeneral(_("No more bytes for reading or writing.")) {
#ifdef DEBUG
cerr << "Generating an IOAgain exception: '" << GetMsg() << "'.\n";
#endif
}
TaskSwitch::TaskSwitch() : GeneralException(_("Switching task in a non-tasked environnement")) {
#ifdef DEBUG
cerr << "Generating a TaskSwitch exception: '" << GetMsg() << "'.\n";
#endif
}
char * xstrdup(const char * s) {
char * r;
r = (char *) xmalloc(strlen(s) + 1);
strcpy(r, s);
return r;
}
void * xmalloc(size_t s) throw (GeneralException) {
char * r;
if (!s) {
return 0;
}
if (!(r = (char *) ::malloc(s + sizeof(size_t)))) {
throw MemoryException(s + sizeof(size_t));
}
memset(r, 0, s + sizeof(size_t));
*((size_t *)r) = s;
return (void *)(r + sizeof(size_t));
}
void * xrealloc(void * ptr, size_t s) {
char * r;
size_t os;
if (!ptr) {
return xmalloc(s);
}
os = *(((size_t *) ptr) - 1);
r = (char *) xmalloc(s);
if (s) {
memcpy(r, ptr, MIN(s, os));
}
xfree(ptr);
return r;
}
#ifdef OVER_FREE
#undef free
#endif
void xfree(void *& p) {
if (p) {
::free(((char *)p) - sizeof(size_t));
p = 0;
}
}
int xpipe(int * p, int flag) throw (GeneralException) {
if (pipe(p)) {
throw GeneralException(String("Error creating pipe: ") + strerror(errno));
}
return p[flag];
}
pid_t xfork() throw (GeneralException) {
pid_t p;
p = fork();
if (p == -1) {
throw GeneralException("Was not able to fork().\n");
}
return p;
}
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