/*
* Copyright © 2009 Red Hat, Inc.
+ * Copyright © 2018 Ebrahim Byagowi
*
* This is part of HarfBuzz, a text shaping library.
*
* Red Hat Author(s): Behdad Esfahbod
*/
-/* http://www.oracle.com/technetwork/articles/servers-storage-dev/standardheaderfiles-453865.html */
+
+/* https://github.com/harfbuzz/harfbuzz/issues/1308
+ * http://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
+ * https://www.oracle.com/technetwork/articles/servers-storage-dev/standardheaderfiles-453865.html
+ */
#ifndef _POSIX_C_SOURCE
-#define _POSIX_C_SOURCE 199309L
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-macros"
+#define _POSIX_C_SOURCE 200809L
+#pragma GCC diagnostic pop
#endif
-#include "hb-private.hh"
-
-#include "hb-object-private.hh"
+#include "hb.hh"
+#include "hb-blob.hh"
#ifdef HAVE_SYS_MMAN_H
#ifdef HAVE_UNISTD_H
#include <stdio.h>
#include <errno.h>
+#include <stdlib.h>
+/**
+ * SECTION: hb-blob
+ * @title: hb-blob
+ * @short_description: Binary data containers
+ * @include: hb.h
+ *
+ * Blobs wrap a chunk of binary data to handle lifecycle management of data
+ * while it is passed between client and HarfBuzz. Blobs are primarily used
+ * to create font faces, but also to access font face tables, as well as
+ * pass around other binary data.
+ **/
-#ifndef HB_DEBUG_BLOB
-#define HB_DEBUG_BLOB (HB_DEBUG+0)
-#endif
-
-
-struct hb_blob_t {
- hb_object_header_t header;
- ASSERT_POD ();
-
- bool immutable;
-
- const char *data;
- unsigned int length;
- hb_memory_mode_t mode;
-
- void *user_data;
- hb_destroy_func_t destroy;
-};
-
-
-static bool _try_writable (hb_blob_t *blob);
-
-static void
-_hb_blob_destroy_user_data (hb_blob_t *blob)
-{
- if (blob->destroy) {
- blob->destroy (blob->user_data);
- blob->user_data = NULL;
- blob->destroy = NULL;
- }
-}
/**
* hb_blob_create: (skip)
if (blob->mode == HB_MEMORY_MODE_DUPLICATE) {
blob->mode = HB_MEMORY_MODE_READONLY;
- if (!_try_writable (blob)) {
+ if (!blob->try_make_writable ()) {
hb_blob_destroy (blob);
return hb_blob_get_empty ();
}
return blob;
}
+static void
+_hb_blob_destroy (void *data)
+{
+ hb_blob_destroy ((hb_blob_t *) data);
+}
+
/**
* hb_blob_create_sub_blob:
* @parent: Parent blob.
{
hb_blob_t *blob;
- if (!length || offset >= parent->length)
+ if (!length || !parent || offset >= parent->length)
return hb_blob_get_empty ();
hb_blob_make_immutable (parent);
MIN (length, parent->length - offset),
HB_MEMORY_MODE_READONLY,
hb_blob_reference (parent),
- (hb_destroy_func_t) hb_blob_destroy);
+ _hb_blob_destroy);
+
+ return blob;
+}
+
+/**
+ * hb_blob_copy_writable_or_fail:
+ * @blob: A blob.
+ *
+ * Makes a writable copy of @blob.
+ *
+ * Return value: New blob, or nullptr if allocation failed.
+ *
+ * Since: 1.8.0
+ **/
+hb_blob_t *
+hb_blob_copy_writable_or_fail (hb_blob_t *blob)
+{
+ blob = hb_blob_create (blob->data,
+ blob->length,
+ HB_MEMORY_MODE_DUPLICATE,
+ nullptr,
+ nullptr);
+
+ if (unlikely (blob == hb_blob_get_empty ()))
+ blob = nullptr;
return blob;
}
* Since: 0.9.2
**/
hb_blob_t *
-hb_blob_get_empty (void)
+hb_blob_get_empty ()
{
- static const hb_blob_t _hb_blob_nil = {
- HB_OBJECT_HEADER_STATIC,
-
- true, /* immutable */
-
- NULL, /* data */
- 0, /* length */
- HB_MEMORY_MODE_READONLY, /* mode */
-
- NULL, /* user_data */
- NULL /* destroy */
- };
-
- return const_cast<hb_blob_t *> (&_hb_blob_nil);
+ return const_cast<hb_blob_t *> (&Null(hb_blob_t));
}
/**
* hb_blob_destroy: (skip)
* @blob: a blob.
*
- * Descreases the reference count on @blob, and if it reaches zero, destroys
+ * Decreases the reference count on @blob, and if it reaches zero, destroys
* @blob, freeing all memory, possibly calling the destroy-callback the blob
* was created for if it has not been called already.
*
{
if (!hb_object_destroy (blob)) return;
- _hb_blob_destroy_user_data (blob);
+ blob->fini_shallow ();
free (blob);
}
* @destroy: callback to call when @data is not needed anymore.
* @replace: whether to replace an existing data with the same key.
*
- * Return value:
+ * Return value:
*
* Since: 0.9.2
**/
* @blob: a blob.
* @key: key for data to get.
*
- *
*
- * Return value: (transfer none):
+ *
+ * Return value: (transfer none):
*
* Since: 0.9.2
**/
* hb_blob_make_immutable:
* @blob: a blob.
*
- *
+ *
*
* Since: 0.9.2
**/
void
hb_blob_make_immutable (hb_blob_t *blob)
{
- if (hb_object_is_inert (blob))
+ if (hb_object_is_immutable (blob))
return;
- blob->immutable = true;
+ hb_object_make_immutable (blob);
}
/**
* hb_blob_is_immutable:
* @blob: a blob.
*
- *
+ *
*
* Return value: TODO
*
hb_bool_t
hb_blob_is_immutable (hb_blob_t *blob)
{
- return blob->immutable;
+ return hb_object_is_immutable (blob);
}
* hb_blob_get_length:
* @blob: a blob.
*
- *
+ *
*
* Return value: the length of blob data in bytes.
*
* @blob: a blob.
* @length: (out):
*
- *
*
- * Returns: (transfer none) (array length=length):
+ *
+ * Returns: (transfer none) (array length=length):
*
* Since: 0.9.2
**/
char *
hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length)
{
- if (!_try_writable (blob)) {
+ if (!blob->try_make_writable ()) {
if (length)
*length = 0;
- return NULL;
+ return nullptr;
}
if (length)
}
-static hb_bool_t
-_try_make_writable_inplace_unix (hb_blob_t *blob)
+bool
+hb_blob_t::try_make_writable_inplace_unix ()
{
#if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT)
uintptr_t pagesize = -1, mask, length;
#endif
if ((uintptr_t) -1L == pagesize) {
- DEBUG_MSG_FUNC (BLOB, blob, "failed to get pagesize: %s", strerror (errno));
+ DEBUG_MSG_FUNC (BLOB, this, "failed to get pagesize: %s", strerror (errno));
return false;
}
- DEBUG_MSG_FUNC (BLOB, blob, "pagesize is %lu", (unsigned long) pagesize);
+ DEBUG_MSG_FUNC (BLOB, this, "pagesize is %lu", (unsigned long) pagesize);
mask = ~(pagesize-1);
- addr = (const char *) (((uintptr_t) blob->data) & mask);
- length = (const char *) (((uintptr_t) blob->data + blob->length + pagesize-1) & mask) - addr;
- DEBUG_MSG_FUNC (BLOB, blob,
+ addr = (const char *) (((uintptr_t) this->data) & mask);
+ length = (const char *) (((uintptr_t) this->data + this->length + pagesize-1) & mask) - addr;
+ DEBUG_MSG_FUNC (BLOB, this,
"calling mprotect on [%p..%p] (%lu bytes)",
addr, addr+length, (unsigned long) length);
if (-1 == mprotect ((void *) addr, length, PROT_READ | PROT_WRITE)) {
- DEBUG_MSG_FUNC (BLOB, blob, "mprotect failed: %s", strerror (errno));
+ DEBUG_MSG_FUNC (BLOB, this, "mprotect failed: %s", strerror (errno));
return false;
}
- blob->mode = HB_MEMORY_MODE_WRITABLE;
+ this->mode = HB_MEMORY_MODE_WRITABLE;
- DEBUG_MSG_FUNC (BLOB, blob,
+ DEBUG_MSG_FUNC (BLOB, this,
"successfully made [%p..%p] (%lu bytes) writable\n",
addr, addr+length, (unsigned long) length);
return true;
#endif
}
-static bool
-_try_writable_inplace (hb_blob_t *blob)
+bool
+hb_blob_t::try_make_writable_inplace ()
{
- DEBUG_MSG_FUNC (BLOB, blob, "making writable inplace\n");
+ DEBUG_MSG_FUNC (BLOB, this, "making writable inplace\n");
- if (_try_make_writable_inplace_unix (blob))
+ if (this->try_make_writable_inplace_unix ())
return true;
- DEBUG_MSG_FUNC (BLOB, blob, "making writable -> FAILED\n");
+ DEBUG_MSG_FUNC (BLOB, this, "making writable -> FAILED\n");
/* Failed to make writable inplace, mark that */
- blob->mode = HB_MEMORY_MODE_READONLY;
+ this->mode = HB_MEMORY_MODE_READONLY;
return false;
}
-static bool
-_try_writable (hb_blob_t *blob)
+bool
+hb_blob_t::try_make_writable ()
{
- if (blob->immutable)
+ if (hb_object_is_immutable (this))
return false;
- if (blob->mode == HB_MEMORY_MODE_WRITABLE)
+ if (this->mode == HB_MEMORY_MODE_WRITABLE)
return true;
- if (blob->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE && _try_writable_inplace (blob))
+ if (this->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE && this->try_make_writable_inplace ())
return true;
- if (blob->mode == HB_MEMORY_MODE_WRITABLE)
+ if (this->mode == HB_MEMORY_MODE_WRITABLE)
return true;
- DEBUG_MSG_FUNC (BLOB, blob, "current data is -> %p\n", blob->data);
+ DEBUG_MSG_FUNC (BLOB, this, "current data is -> %p\n", this->data);
char *new_data;
- new_data = (char *) malloc (blob->length);
+ new_data = (char *) malloc (this->length);
if (unlikely (!new_data))
return false;
- DEBUG_MSG_FUNC (BLOB, blob, "dupped successfully -> %p\n", blob->data);
+ DEBUG_MSG_FUNC (BLOB, this, "dupped successfully -> %p\n", this->data);
- memcpy (new_data, blob->data, blob->length);
- _hb_blob_destroy_user_data (blob);
- blob->mode = HB_MEMORY_MODE_WRITABLE;
- blob->data = new_data;
- blob->user_data = new_data;
- blob->destroy = free;
+ memcpy (new_data, this->data, this->length);
+ this->destroy_user_data ();
+ this->mode = HB_MEMORY_MODE_WRITABLE;
+ this->data = new_data;
+ this->user_data = new_data;
+ this->destroy = free;
return true;
}
+
+/*
+ * Mmap
+ */
+
+#ifdef HAVE_MMAP
+# include <sys/types.h>
+# include <sys/stat.h>
+# include <fcntl.h>
+#endif
+
+#ifdef _WIN32
+# include <windows.h>
+#else
+# ifndef O_BINARY
+# define O_BINARY 0
+# endif
+#endif
+
+#ifndef MAP_NORESERVE
+# define MAP_NORESERVE 0
+#endif
+
+struct hb_mapped_file_t
+{
+ char *contents;
+ unsigned long length;
+#ifdef _WIN32
+ HANDLE mapping;
+#endif
+};
+
+#if (defined(HAVE_MMAP) || defined(_WIN32)) && !defined(HB_NO_MMAP)
+static void
+_hb_mapped_file_destroy (void *file_)
+{
+ hb_mapped_file_t *file = (hb_mapped_file_t *) file_;
+#ifdef HAVE_MMAP
+ munmap (file->contents, file->length);
+#elif defined(_WIN32)
+ UnmapViewOfFile (file->contents);
+ CloseHandle (file->mapping);
+#else
+ assert (0); // If we don't have mmap we shouldn't reach here
+#endif
+
+ free (file);
+}
+#endif
+
+/**
+ * hb_blob_create_from_file:
+ * @file_name: font filename.
+ *
+ * Returns: A hb_blob_t pointer with the content of the file
+ *
+ * Since: 1.7.7
+ **/
+hb_blob_t *
+hb_blob_create_from_file (const char *file_name)
+{
+ /* Adopted from glib's gmappedfile.c with Matthias Clasen and
+ Allison Lortie permission but changed a lot to suit our need. */
+#if defined(HAVE_MMAP) && !defined(HB_NO_MMAP)
+ hb_mapped_file_t *file = (hb_mapped_file_t *) calloc (1, sizeof (hb_mapped_file_t));
+ if (unlikely (!file)) return hb_blob_get_empty ();
+
+ int fd = open (file_name, O_RDONLY | O_BINARY, 0);
+ if (unlikely (fd == -1)) goto fail_without_close;
+
+ struct stat st;
+ if (unlikely (fstat (fd, &st) == -1)) goto fail;
+
+ file->length = (unsigned long) st.st_size;
+ file->contents = (char *) mmap (nullptr, file->length, PROT_READ,
+ MAP_PRIVATE | MAP_NORESERVE, fd, 0);
+
+ if (unlikely (file->contents == MAP_FAILED)) goto fail;
+
+ close (fd);
+
+ return hb_blob_create (file->contents, file->length,
+ HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, (void *) file,
+ (hb_destroy_func_t) _hb_mapped_file_destroy);
+
+fail:
+ close (fd);
+fail_without_close:
+ free (file);
+
+#elif defined(_WIN32) && !defined(HB_NO_MMAP)
+ hb_mapped_file_t *file = (hb_mapped_file_t *) calloc (1, sizeof (hb_mapped_file_t));
+ if (unlikely (!file)) return hb_blob_get_empty ();
+
+ HANDLE fd;
+ unsigned int size = strlen (file_name) + 1;
+ wchar_t * wchar_file_name = (wchar_t *) malloc (sizeof (wchar_t) * size);
+ if (unlikely (wchar_file_name == nullptr)) goto fail_without_close;
+ mbstowcs (wchar_file_name, file_name, size);
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
+ {
+ CREATEFILE2_EXTENDED_PARAMETERS ceparams = { 0 };
+ ceparams.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS);
+ ceparams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED & 0xFFFF;
+ ceparams.dwFileFlags = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED & 0xFFF00000;
+ ceparams.dwSecurityQosFlags = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED & 0x000F0000;
+ ceparams.lpSecurityAttributes = nullptr;
+ ceparams.hTemplateFile = nullptr;
+ fd = CreateFile2 (wchar_file_name, GENERIC_READ, FILE_SHARE_READ,
+ OPEN_EXISTING, &ceparams);
+ }
+#else
+ fd = CreateFileW (wchar_file_name, GENERIC_READ, FILE_SHARE_READ, nullptr,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED,
+ nullptr);
+#endif
+ free (wchar_file_name);
+
+ if (unlikely (fd == INVALID_HANDLE_VALUE)) goto fail_without_close;
+
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
+ {
+ LARGE_INTEGER length;
+ GetFileSizeEx (fd, &length);
+ file->length = length.LowPart;
+ file->mapping = CreateFileMappingFromApp (fd, nullptr, PAGE_READONLY, length.QuadPart, nullptr);
+ }
+#else
+ file->length = (unsigned long) GetFileSize (fd, nullptr);
+ file->mapping = CreateFileMapping (fd, nullptr, PAGE_READONLY, 0, 0, nullptr);
+#endif
+ if (unlikely (file->mapping == nullptr)) goto fail;
+
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
+ file->contents = (char *) MapViewOfFileFromApp (file->mapping, FILE_MAP_READ, 0, 0);
+#else
+ file->contents = (char *) MapViewOfFile (file->mapping, FILE_MAP_READ, 0, 0, 0);
+#endif
+ if (unlikely (file->contents == nullptr)) goto fail;
+
+ CloseHandle (fd);
+ return hb_blob_create (file->contents, file->length,
+ HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE, (void *) file,
+ (hb_destroy_func_t) _hb_mapped_file_destroy);
+
+fail:
+ CloseHandle (fd);
+fail_without_close:
+ free (file);
+
+#endif
+
+ /* The following tries to read a file without knowing its size beforehand
+ It's used as a fallback for systems without mmap or to read from pipes */
+ unsigned long len = 0, allocated = BUFSIZ * 16;
+ char *data = (char *) malloc (allocated);
+ if (unlikely (data == nullptr)) return hb_blob_get_empty ();
+
+ FILE *fp = fopen (file_name, "rb");
+ if (unlikely (fp == nullptr)) goto fread_fail_without_close;
+
+ while (!feof (fp))
+ {
+ if (allocated - len < BUFSIZ)
+ {
+ allocated *= 2;
+ /* Don't allocate and go more than ~536MB, our mmap reader still
+ can cover files like that but lets limit our fallback reader */
+ if (unlikely (allocated > (2 << 28))) goto fread_fail;
+ char *new_data = (char *) realloc (data, allocated);
+ if (unlikely (new_data == nullptr)) goto fread_fail;
+ data = new_data;
+ }
+
+ unsigned long addition = fread (data + len, 1, allocated - len, fp);
+
+ int err = ferror (fp);
+#ifdef EINTR // armcc doesn't have it
+ if (unlikely (err == EINTR)) continue;
+#endif
+ if (unlikely (err)) goto fread_fail;
+
+ len += addition;
+ }
+
+ return hb_blob_create (data, len, HB_MEMORY_MODE_WRITABLE, data,
+ (hb_destroy_func_t) free);
+
+fread_fail:
+ fclose (fp);
+fread_fail_without_close:
+ free (data);
+ return hb_blob_get_empty ();
+}
projects / platform / upstream / harfbuzz.git / blobdiff