+++ /dev/null
-/*
- * Raster error handling for CUPS.
- *
- * Copyright 2007-2015 by Apple Inc.
- * Copyright 2007 by Easy Software Products.
- *
- * Licensed under Apache License v2.0. See the file "LICENSE" for more information.
- */
-
-/*
- * Include necessary headers...
- */
-
-#include <cups/raster-private.h>
-
-
-/*
- * Local structures...
- */
-
-typedef struct _cups_raster_error_s /**** Error buffer structure ****/
-{
- char *start, /* Start of buffer */
- *current, /* Current position in buffer */
- *end; /* End of buffer */
-} _cups_raster_error_t;
-
-
-/*
- * Local functions...
- */
-
-static _cups_raster_error_t *get_error_buffer(void);
-
-
-/*
- * '_cupsRasterAddError()' - Add an error message to the error buffer.
- */
-
-void
-_cupsRasterAddError(const char *f, /* I - Printf-style error message */
- ...) /* I - Additional arguments as needed */
-{
- _cups_raster_error_t *buf = get_error_buffer();
- /* Error buffer */
- va_list ap; /* Pointer to additional arguments */
- char s[2048]; /* Message string */
- ssize_t bytes; /* Bytes in message string */
-
-
- 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))
- {
- /*
- * Allocate more memory...
- */
-
- char *temp; /* New buffer */
- size_t size; /* Size of buffer */
-
-
- 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;
-
- /*
- * Update pointers...
- */
-
- buf->end = temp + size;
- buf->current = temp + (buf->current - buf->start);
- buf->start = temp;
- }
-
- /*
- * Append the message to the end of the current string...
- */
-
- memcpy(buf->current, s, (size_t)bytes);
- buf->current += bytes - 1;
-}
-
-
-/*
- * '_cupsRasterClearError()' - Clear the error buffer.
- */
-
-void
-_cupsRasterClearError(void)
-{
- _cups_raster_error_t *buf = get_error_buffer();
- /* Error buffer */
-
-
- buf->current = buf->start;
-
- if (buf->start)
- *(buf->start) = '\0';
-}
-
-
-/*
- * 'cupsRasterErrorString()' - Return the last error from a raster function.
- *
- * If there are no recent errors, NULL is returned.
- *
- * @since CUPS 1.3/macOS 10.5@
- */
-
-const char * /* O - Last error */
-cupsRasterErrorString(void)
-{
- _cups_raster_error_t *buf = get_error_buffer();
- /* Error buffer */
-
-
- if (buf->current == buf->start)
- return (NULL);
- else
- return (buf->start);
-}
-
-
-#ifdef HAVE_PTHREAD_H
-/*
- * Implement per-thread globals...
- */
-
-# include <pthread.h>
-
-
-/*
- * Local globals...
- */
-
-static pthread_key_t raster_key = 0; /* Thread local storage key */
-static pthread_once_t raster_key_once = PTHREAD_ONCE_INIT;
- /* One-time initialization object */
-
-
-/*
- * Local functions...
- */
-
-static void raster_init(void);
-static void raster_destructor(void *value);
-
-
-/*
- * 'get_error_buffer()' - Return a pointer to thread local storage.
- */
-
-_cups_raster_error_t * /* O - Pointer to error buffer */
-get_error_buffer(void)
-{
- _cups_raster_error_t *buf; /* Pointer to error buffer */
-
-
- /*
- * Initialize the global data exactly once...
- */
-
- DEBUG_puts("3get_error_buffer()");
-
- pthread_once(&raster_key_once, raster_init);
-
- /*
- * See if we have allocated the data yet...
- */
-
- if ((buf = (_cups_raster_error_t *)pthread_getspecific(raster_key))
- == NULL)
- {
- DEBUG_puts("4get_error_buffer: allocating memory for thread.");
-
- /*
- * No, allocate memory as set the pointer for the key...
- */
-
- buf = calloc(1, sizeof(_cups_raster_error_t));
- pthread_setspecific(raster_key, buf);
-
- DEBUG_printf(("4get_error_buffer: buf=%p", (void *)buf));
- }
-
- /*
- * Return the pointer to the data...
- */
-
- return (buf);
-}
-
-
-/*
- * 'raster_init()' - Initialize error buffer once.
- */
-
-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));
-}
-
-
-/*
- * 'raster_destructor()' - Free memory allocated by get_error_buffer().
- */
-
-static void
-raster_destructor(void *value) /* I - Data to free */
-{
- _cups_raster_error_t *buf = (_cups_raster_error_t *)value;
- /* Error buffer */
-
-
- DEBUG_printf(("3raster_destructor(value=%p)", value));
-
- if (buf->start)
- free(buf->start);
-
- free(value);
-}
-
-
-#else
-/*
- * Implement static globals...
- */
-
-/*
- * 'get_error_buffer()' - Return a pointer to thread local storage.
- */
-
-_cups_raster_error_t * /* O - Pointer to error buffer */
-get_error_buffer(void)
-{
- static _cups_raster_error_t buf = { 0, 0, 0 };
- /* Error buffer */
-
-
- return (&buf);
-}
-#endif /* HAVE_PTHREAD_H */
projects / thirdparty / cups.git / blobdiff