* 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
+#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-debug.hh"
-#include "hb-blob-private.hh"
+#include "hb.hh"
+#include "hb-blob.hh"
#ifdef HAVE_SYS_MMAN_H
#ifdef HAVE_UNISTD_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.
+ **/
+
+
+/**
* hb_blob_create: (skip)
* @data: Pointer to blob data.
* @length: Length of @data in bytes.
{
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);
* 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 */
-
- nullptr, /* data */
- 0, /* length */
- HB_MEMORY_MODE_READONLY, /* mode */
-
- nullptr, /* user_data */
- nullptr /* destroy */
- };
-
- return const_cast<hb_blob_t *> (&_hb_blob_nil);
+ return const_cast<hb_blob_t *> (&Null(hb_blob_t));
}
/**
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_bool_t
hb_blob_is_immutable (hb_blob_t *blob)
{
- return blob->immutable;
+ return hb_object_is_immutable (blob);
}
bool
-hb_blob_t::try_make_writable_inplace_unix (void)
+hb_blob_t::try_make_writable_inplace_unix ()
{
#if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT)
uintptr_t pagesize = -1, mask, length;
}
bool
-hb_blob_t::try_make_writable_inplace (void)
+hb_blob_t::try_make_writable_inplace ()
{
DEBUG_MSG_FUNC (BLOB, this, "making writable inplace\n");
}
bool
-hb_blob_t::try_make_writable (void)
+hb_blob_t::try_make_writable ()
{
- if (this->immutable)
+ if (hb_object_is_immutable (this))
return false;
if (this->mode == HB_MEMORY_MODE_WRITABLE)
# include <fcntl.h>
#endif
-#if defined(_WIN32) || defined(__CYGWIN__)
+#ifdef _WIN32
# include <windows.h>
-#endif
-
-#ifndef _O_BINARY
-# define _O_BINARY 0
+#else
+# ifndef O_BINARY
+# define O_BINARY 0
+# endif
#endif
#ifndef MAP_NORESERVE
{
char *contents;
unsigned long length;
-#if defined(_WIN32) || defined(__CYGWIN__)
+#ifdef _WIN32
HANDLE mapping;
#endif
};
+#if (defined(HAVE_MMAP) || defined(_WIN32)) && !defined(HB_NO_MMAP)
static void
-_hb_mapped_file_destroy (hb_mapped_file_t *file)
+_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) || defined(__CYGWIN__)
+#elif defined(_WIN32)
UnmapViewOfFile (file->contents);
CloseHandle (file->mapping);
#else
- free (file->contents);
+ assert (0); // If we don't have mmap we shouldn't reach here
#endif
free (file);
}
+#endif
/**
* hb_blob_create_from_file:
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.
- bool writable = false;
- hb_memory_mode_t mm = HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE;
+ /* 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 ();
-#ifdef HAVE_MMAP
- int fd = open (file_name, (writable ? O_RDWR : O_RDONLY) | _O_BINARY, 0);
-# define CLOSE close
+ 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;
- // See https://github.com/GNOME/glib/blob/f9faac7/glib/gmappedfile.c#L139-L142
- if (unlikely (st.st_size == 0 && S_ISREG (st.st_mode))) goto fail;
-
file->length = (unsigned long) st.st_size;
- file->contents = (char *) mmap (nullptr, file->length,
- writable ? PROT_READ|PROT_WRITE : PROT_READ,
+ file->contents = (char *) mmap (nullptr, file->length, PROT_READ,
MAP_PRIVATE | MAP_NORESERVE, fd, 0);
if (unlikely (file->contents == MAP_FAILED)) goto fail;
-#elif defined(_WIN32) || defined(__CYGWIN__)
- HANDLE fd = CreateFile (file_name,
- writable ? GENERIC_READ|GENERIC_WRITE : GENERIC_READ,
- FILE_SHARE_READ, nullptr, OPEN_EXISTING,
- FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, nullptr);
-# define CLOSE CloseHandle
+ close (fd);
- if (unlikely (fd == INVALID_HANDLE_VALUE)) goto fail_without_close;
+ 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);
- file->length = (unsigned long) GetFileSize (fd, nullptr);
- file->mapping = CreateFileMapping (fd, nullptr,
- writable ? PAGE_WRITECOPY : PAGE_READONLY,
- 0, 0, nullptr);
- if (unlikely (file->mapping == nullptr)) goto fail;
+fail:
+ close (fd);
+fail_without_close:
+ free (file);
- file->contents = (char *) MapViewOfFile (file->mapping,
- writable ? FILE_MAP_COPY : FILE_MAP_READ,
- 0, 0, 0);
- if (unlikely (file->contents == nullptr)) goto fail;
+#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
- mm = HB_MEMORY_MODE_WRITABLE;
-
- FILE *fd = fopen (file_name, "rb");
-# define CLOSE fclose
- if (unlikely (!fd)) goto fail_without_close;
+ 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);
- fseek (fd, 0, SEEK_END);
- file->length = ftell (fd);
- rewind (fd);
- file->contents = (char *) malloc (file->length);
- if (unlikely (!file->contents)) goto fail;
+ if (unlikely (fd == INVALID_HANDLE_VALUE)) goto fail_without_close;
- if (unlikely (fread (file->contents, 1, file->length, fd) != file->length))
- goto fail;
+#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;
- CLOSE (fd);
- return hb_blob_create (file->contents, file->length, mm, (void *) file,
+ 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:
- CLOSE (fd);
-#undef CLOSE
+ 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