#include <cups/raster-private.h>
typedef struct _cups_raster_error_s
{
char *start,
*current,
*end;
} _cups_raster_error_t;
static _cups_raster_error_t *get_error_buffer(void);
void
_cupsRasterAddError(const char *f,
...)
{
_cups_raster_error_t *buf = get_error_buffer();
va_list ap;
char s[2048];
ssize_t bytes;
DEBUG_printf(("_cupsRasterAddError(f=\"%s\", ...)", f));
va_start(ap, f);
bytes = vsnprintf(s, sizeof(s), f, ap);
va_end(ap);
if (bytes <= 0)
return;
DEBUG_printf(("1_cupsRasterAddError: %s", s));
bytes ++;
if ((size_t)bytes >= sizeof(s))
return;
if (bytes > (ssize_t)(buf->end - buf->current))
{
char *temp;
size_t size;
size = (size_t)(buf->end - buf->start + 2 * bytes + 1024);
if (buf->start)
temp = realloc(buf->start, size);
else
temp = malloc(size);
if (!temp)
return;
buf->end = temp + size;
buf->current = temp + (buf->current - buf->start);
buf->start = temp;
}
memcpy(buf->current, s, (size_t)bytes);
buf->current += bytes - 1;
}
void
_cupsRasterClearError(void)
{
_cups_raster_error_t *buf = get_error_buffer();
buf->current = buf->start;
if (buf->start)
*(buf->start) = '\0';
}
const char *
cupsRasterErrorString(void)
{
_cups_raster_error_t *buf = get_error_buffer();
if (buf->current == buf->start)
return (NULL);
else
return (buf->start);
}
#ifdef HAVE_PTHREAD_H
# include <pthread.h>
static pthread_key_t raster_key = 0;
static pthread_once_t raster_key_once = PTHREAD_ONCE_INIT;
static void raster_init(void);
static void raster_destructor(void *value);
_cups_raster_error_t *
get_error_buffer(void)
{
_cups_raster_error_t *buf;
DEBUG_puts("3get_error_buffer()");
pthread_once(&raster_key_once, raster_init);
if ((buf = (_cups_raster_error_t *)pthread_getspecific(raster_key))
== NULL)
{
DEBUG_puts("4get_error_buffer: allocating memory for thread.");
buf = calloc(1, sizeof(_cups_raster_error_t));
pthread_setspecific(raster_key, buf);
DEBUG_printf(("4get_error_buffer: buf=%p", (void *)buf));
}
return (buf);
}
static void
raster_init(void)
{
pthread_key_create(&raster_key, raster_destructor);
DEBUG_printf(("3raster_init(): raster_key=%x(%u)", (unsigned)raster_key, (unsigned)raster_key));
}
static void
raster_destructor(void *value)
{
_cups_raster_error_t *buf = (_cups_raster_error_t *)value;
DEBUG_printf(("3raster_destructor(value=%p)", value));
if (buf->start)
free(buf->start);
free(value);
}
#else
_cups_raster_error_t *
get_error_buffer(void)
{
static _cups_raster_error_t buf = { 0, 0, 0 };
return (&buf);
}
#endif