/*
- * $Id: ext.c 1 2005-03-26 01:45:38Z tilman $
- *
- * Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
+ * Copyright (c) 2005-2007 Tilman Sauerbeck (tilman at code-monkey de)
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
#include <Eet.h>
#include <ruby.h>
+#include <st.h>
+#include <locale.h>
+
+#define CHECK_NO_BIN0(key) \
+ if (rb_funcall (key, id_include, 1, INT2FIX (0)) == Qtrue) \
+ rb_raise (rb_eArgError, #key " must not contain binary zeroes");
-#define CHECK_KEY(key) \
- Check_Type ((key), T_STRING); \
- if (rb_funcall ((key), rb_intern ("include?"), \
- 1, INT2FIX (0)) == Qtrue) \
- rb_raise (rb_eArgError, "key must not contain binary zeroes");
+#define CHECK_CLOSED(ef) \
+ if (!*(ef)) \
+ rb_raise (rb_eIOError, "closed stream");
+
+#define CHECK_READABLE(ef) \
+ switch (eet_mode_get (*ef)) { \
+ case EET_FILE_MODE_READ: \
+ case EET_FILE_MODE_READ_WRITE: \
+ break; \
+ default: \
+ rb_raise (rb_eIOError, "permission denied"); \
+ }
+
+#ifdef WORDS_BIGENDIAN
+# define BSWAP32(x) \
+ ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
+#else /* !WORDS_BIGENDIAN */
+# define BSWAP32(x) (x)
+#endif /* WORDS_BIGENDIAN */
static VALUE c_close (VALUE self);
+static VALUE cStream, cChunk,
+ eEetError, eNameError, ePropError,
+ sym_lossy, sym_level, sym_quality, sym_char, sym_short,
+ sym_long_long, sym_double;
+static ID id_include, id_to_s, id_keys, id_pack,
+ id_to_eet_chunks, id_to_eet_name, id_to_eet_properties,
+ id_tag, id_data;
+
static void
c_free (Eet_File **ef)
{
VALUE file = Qnil, mode = Qnil;
Eet_File **ef = NULL;
Eet_File_Mode m = EET_FILE_MODE_READ;
- const char *tmp;
+ const char *tmp, *cfile;
Data_Get_Struct (self, Eet_File *, ef);
rb_scan_args (argc, argv, "11", &file, &mode);
- Check_Type (file, T_STRING);
+ cfile = StringValuePtr (file);
if (!NIL_P (mode)) {
- Check_Type (mode, T_STRING);
-
tmp = StringValuePtr (mode);
if (!strcmp (tmp, "r+"))
m = EET_FILE_MODE_READ_WRITE;
eet_init ();
- *ef = eet_open (StringValuePtr (file), m);
+ *ef = eet_open (cfile, m);
if (!*ef) {
switch (m) {
case EET_FILE_MODE_READ_WRITE:
break;
}
- rb_raise (rb_eRuntimeError, tmp, file);
+ rb_raise (rb_eRuntimeError, tmp, cfile);
}
return self;
Eet_File **ef = NULL;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
- else {
- eet_close (*ef);
- *ef = NULL;
+ eet_close (*ef);
+ *ef = NULL;
- eet_shutdown ();
- }
+ eet_shutdown ();
return self;
}
-/*
- * call-seq:
- * ef.list([glob]) -> array
- *
- * Returns an Array of entries in _ef_ that match the shell glob
- * _glob_ (defaulting to "*").
- */
static VALUE
-c_list (int argc, VALUE *argv, VALUE self)
+get_keys (Eet_File *ef, const char *glob)
{
- VALUE glob = Qnil, ret;
- Eet_File **ef = NULL;
- char **entries, *tmp = "*";
+ VALUE ret;
+ char **keys;
int i, count = 0;
- Data_Get_Struct (self, Eet_File *, ef);
+ keys = eet_list (ef, glob, &count);
+ ret = rb_ary_new2 (count);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
+ for (i = 0; i < count; i++)
+ rb_ary_store (ret, i, rb_str_new2 (keys[i]));
- switch (eet_mode_get (*ef)) {
- case EET_FILE_MODE_READ:
- case EET_FILE_MODE_READ_WRITE:
- break;
- default:
- rb_raise (rb_eIOError, "cannot list entries");
- }
+ free (keys);
- rb_scan_args (argc, argv, "01", &glob);
+ return ret;
+}
- if (!NIL_P (glob)) {
- Check_Type (glob, T_STRING);
- tmp = StringValuePtr (glob);
- }
+/*
+ * call-seq:
+ * ef.entries -> array
+ *
+ * Returns an Array with the keys of the entries in _ef_.
+ * If the keys cannot be retrieved, an +IOError+ is raised.
+ */
+static VALUE
+c_entries (VALUE self)
+{
+ Eet_File **ef = NULL;
- ret = rb_ary_new ();
+ Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
+ CHECK_READABLE (ef);
- entries = eet_list (*ef, tmp, &count);
+ return get_keys (*ef, "*");
+}
- for (i = 0; i < count; i++)
- rb_ary_push (ret, rb_str_new2 (entries[i]));
+/*
+ * call-seq:
+ * ef[glob] -> array
+ *
+ * Returns an Array with the keys of entries in _ef_ that match the
+ * shell glob _glob_.
+ * If the keys cannot be retrieved, an +IOError+ is raised.
+ */
+static VALUE
+c_glob (VALUE self, VALUE glob)
+{
+ Eet_File **ef = NULL;
- free (entries);
+ Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
+ CHECK_READABLE (ef);
- return ret;
+ return get_keys (*ef, StringValuePtr (glob));
}
/*
c_delete (VALUE self, VALUE key)
{
Eet_File **ef = NULL;
- char *tmp;
+ char *ckey;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
- CHECK_KEY (key);
+ ckey = StringValuePtr (key);
+ CHECK_NO_BIN0 (key);
- tmp = StringValuePtr (key);
-
- if (!eet_delete (*ef, tmp))
- rb_raise (rb_eIOError, "cannot delete entry - %s", tmp);
+ if (!eet_delete (*ef, ckey))
+ rb_raise (rb_eIOError, "cannot delete entry - %s", ckey);
return self;
}
VALUE ret;
Eet_File **ef = NULL;
void *data;
+ char *ckey;
int size = 0;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
+ ckey = StringValuePtr (key);
+ CHECK_NO_BIN0 (key);
- CHECK_KEY (key);
-
- data = eet_read (*ef, StringValuePtr (key), &size);
+ data = eet_read (*ef, ckey, &size);
if (!data)
- rb_raise (rb_eIOError, "cannot read entry - %s", key);
+ rb_raise (rb_eIOError, "cannot read entry - %s", ckey);
ret = rb_str_new (data, size);
{
VALUE key = Qnil, buf = Qnil, comp = Qnil;
Eet_File **ef = NULL;
+ char *ckey, *cbuf;
int n;
Data_Get_Struct (self, Eet_File *, ef);
-
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
+ CHECK_CLOSED (ef);
rb_scan_args (argc, argv, "21", &key, &buf, &comp);
if (NIL_P (comp))
comp = Qtrue;
- CHECK_KEY (key);
- Check_Type (buf, T_STRING);
+ ckey = StringValuePtr (key);
+ CHECK_NO_BIN0 (key);
+ cbuf = StringValuePtr (buf);
- n = eet_write (*ef, StringValuePtr (key),
- StringValuePtr (buf), RSTRING (buf)->len,
+ n = eet_write (*ef, ckey,
+ cbuf, RSTRING (buf)->len,
comp == Qtrue);
if (!n)
rb_raise (rb_eIOError, "couldn't write to file");
* Reads an image entry from _ef_ that is stored as _key_.
* If the data cannot be read, an +IOError+ is raised,
* otherwise an Array is returned that contains the image data,
- * the image width, the image height and a boolean that indicates
- * whether the image has an alpha channel or not.
+ * the image width, the image height, a boolean that indicates
+ * whether the image has an alpha channel or not and a hash
+ * that contains the compression options that were used to store
+ * the image (see Eet::File#write_image).
*/
static VALUE
c_read_image (VALUE self, VALUE key)
{
- VALUE ret;
+ VALUE ret, comp;
Eet_File **ef = NULL;
void *data;
- int w = 0, h = 0, has_alpha = 0;
+ char *ckey;
+ unsigned int w = 0, h = 0;
+ int has_alpha = 0, level = 0, quality = 0, lossy = 0;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
- CHECK_KEY (key);
+ ckey = StringValuePtr (key);
+ CHECK_NO_BIN0 (key);
- data = eet_data_image_read (*ef, StringValuePtr (key), &w, &h,
- &has_alpha, NULL, NULL, NULL);
+ data = eet_data_image_read (*ef, ckey, &w, &h,
+ &has_alpha, &level, &quality,
+ &lossy);
if (!data)
- rb_raise (rb_eIOError, "cannot read entry - %s", key);
+ rb_raise (rb_eIOError, "cannot read entry - %s", ckey);
+
+ comp = rb_hash_new ();
+ rb_hash_aset (comp, sym_lossy, INT2FIX (lossy));
+ rb_hash_aset (comp, sym_level, INT2FIX (level));
+ rb_hash_aset (comp, sym_quality, INT2FIX (quality));
- ret = rb_ary_new3 (4, rb_str_new (data, w * h * 4),
+ ret = rb_ary_new3 (5, rb_str_new (data, w * h * 4),
INT2FIX (w), INT2FIX (h),
- has_alpha ? Qtrue : Qfalse);
+ has_alpha ? Qtrue : Qfalse, comp);
free (data);
return ret;
/*
* call-seq:
- * ef.write_image(key, image_data, w, h [, alpha] ) -> integer
+ * ef.write_image(key, image_data, w, h [, alpha] [, comp] ) -> integer
*
* Stores _image_data_ with width _w_ and height _h_ in _ef_ as _key_.
* Pass true for _alpha_ if the image contains an alpha channel.
+ * You can control how the image is compressed by passing _comp_, which
+ * is a hash whose :lossy entry is true if the image should be
+ * compressed lossily. If :lossy is true, the :quality entry
+ * (0-100, default 100) sets the compression quality.
+ * If :lossy is false, the :level entry (0-9, default 9) sets the
+ * compression level. If _comp_ isn't passed, then the
+ * image is stored losslessly.
* If the data cannot be written, an +IOError+ is raised,
* otherwise a the number of bytes written is returned.
*/
c_write_image (int argc, VALUE *argv, VALUE self)
{
VALUE key = Qnil, buf = Qnil, w = Qnil, h = Qnil, has_alpha = Qnil;
+ VALUE comp = Qnil, tmp;
Eet_File **ef = NULL;
- int n;
+ char *ckey, *cbuf;
+ int n, lossy = 0, level = 9, quality = 100;
Data_Get_Struct (self, Eet_File *, ef);
+ CHECK_CLOSED (ef);
- if (!*ef)
- rb_raise (rb_eIOError, "closed stream");
-
- rb_scan_args (argc, argv, "41", &key, &buf, &w, &h, &has_alpha);
+ rb_scan_args (argc, argv, "42", &key, &buf, &w, &h, &has_alpha,
+ &comp);
if (NIL_P (has_alpha))
has_alpha = Qfalse;
- CHECK_KEY (key);
- Check_Type (buf, T_STRING);
+ ckey = StringValuePtr (key);
+ CHECK_NO_BIN0 (key);
+ cbuf = StringValuePtr (buf);
Check_Type (w, T_FIXNUM);
Check_Type (h, T_FIXNUM);
+ if (!NIL_P (comp)) {
+ Check_Type (comp, T_HASH);
+
+ tmp = rb_hash_aref (comp, sym_lossy);
+ if (!NIL_P (tmp))
+ lossy = FIX2INT (tmp);
+
+ tmp = rb_hash_aref (comp, sym_level);
+ if (!NIL_P (tmp))
+ level = FIX2INT (tmp);
+
+ tmp = rb_hash_aref (comp, sym_quality);
+ if (!NIL_P (tmp))
+ quality = FIX2INT (tmp);
+ }
+
if (!RSTRING (buf)->len)
return INT2FIX (0);
- n = eet_data_image_write (*ef, StringValuePtr (key),
- StringValuePtr (buf),
+ n = eet_data_image_write (*ef, ckey, cbuf,
FIX2INT (w), FIX2INT (h),
- has_alpha == Qtrue, 9, 0, 0);
+ has_alpha == Qtrue,
+ level, quality, lossy);
if (!n)
rb_raise (rb_eIOError, "couldn't write to file");
else
return INT2FIX (n);
}
+static VALUE
+chunk_init (VALUE self, VALUE tag, VALUE data)
+{
+ long tag_len, data_len, tmp;
+
+ StringValue (tag);
+ StringValue (data);
+
+ CHECK_NO_BIN0 (tag);
+
+ /* libeet uses a signed 32bit integer to store the
+ * chunk size, so make sure we don't overflow it
+ */
+ tag_len = RSTRING (tag)->len;
+ data_len = RSTRING (data)->len;
+ tmp = tag_len + 1 + data_len;
+
+ if (tmp < tag_len || tmp < data_len || tmp < 1 || tmp >= 2147483647L)
+ rb_raise (rb_eArgError, "tag or data too long");
+
+ rb_ivar_set (self, id_tag, rb_str_dup_frozen (tag));
+ rb_ivar_set (self, id_data, rb_str_dup_frozen (data));
+
+ return self;
+}
+
+static VALUE
+chunk_to_s (VALUE self)
+{
+ VALUE tmp, ret;
+ unsigned int size, buf_len;
+ unsigned char *buf;
+ struct RString *tag, *data;
+
+ tmp = rb_ivar_get (self, id_tag);
+ tag = RSTRING (tmp);
+
+ tmp = rb_ivar_get (self, id_data);
+ data = RSTRING (tmp);
+
+ buf_len = 9 + tag->len + data->len;
+ ret = rb_str_buf_new (buf_len);
+
+ buf = (unsigned char *) RSTRING (ret)->ptr;
+ RSTRING (ret)->len = buf_len;
+
+ memcpy (buf, "CHnK", 4);
+ buf += 4;
+
+ size = tag->len + data->len + 1;
+ size = BSWAP32 (size);
+ memcpy (buf, &size, 4);
+ buf += 4;
+
+ memcpy (buf, tag->ptr, tag->len);
+ buf += tag->len;
+
+ *buf++ = 0;
+
+ memcpy (buf, data->ptr, data->len);
+
+ return ret;
+}
+
+static int
+for_each_prop (VALUE tag, VALUE arg, VALUE stream)
+{
+ VALUE value, type, tmp;
+
+ if (rb_obj_is_kind_of (arg, rb_cArray) == Qfalse)
+ rb_raise (ePropError, "hash value is not an array");
+
+ value = rb_ary_entry (arg, 0);
+ if (NIL_P (value))
+ return ST_CONTINUE;
+
+ type = rb_ary_entry (arg, 1);
+ tmp = rb_funcall (value, id_to_eet_chunks, 2, tag, type);
+
+ rb_ary_concat (stream, tmp);
+
+ return ST_CONTINUE;
+}
+
+/*
+ * call-seq:
+ * object.to_eet -> string
+ *
+ * Serializes the receiver to EET format.
+ */
+static VALUE
+c_to_eet (VALUE self)
+{
+ VALUE props, name, stream, chunk, args[2];
+#ifndef HAVE_RB_HASH_FOREACH
+ struct RArray *keys;
+ long i;
+#endif
+
+ props = rb_funcall2 (self, id_to_eet_properties, 0, NULL);
+
+ if (rb_obj_is_kind_of (props, rb_cHash) == Qfalse ||
+ !RHASH (props)->tbl->num_entries)
+ rb_raise (ePropError, "invalid EET properties");
+
+ name = rb_funcall2 (self, id_to_eet_name, 0, NULL);
+ StringValue (name);
+
+ if (!RSTRING (name)->len ||
+ rb_funcall (name, id_include, 1, INT2FIX (0)))
+ rb_raise (eNameError, "invalid EET name");
+
+ stream = rb_class_new_instance (0, NULL, cStream);
+
+#ifdef HAVE_RB_HASH_FOREACH
+ rb_hash_foreach (props, for_each_prop, stream);
+#else
+ keys = RARRAY (rb_funcall2 (props, id_keys, 0, NULL));
+
+ for (i = 0; i < keys->len; i++)
+ for_each_prop (keys->ptr[i],
+ rb_hash_aref (props, keys->ptr[i]),
+ stream);
+#endif
+
+ args[0] = name;
+ args[1] = rb_ary_to_s (stream);
+
+ rb_ary_clear (stream); /* give the GC a hand... */
+
+ chunk = rb_class_new_instance (2, args, cChunk);
+
+ return rb_funcall2 (chunk, id_to_s, 0, NULL);
+}
+
+static VALUE
+int_to_eet_chunks (int argc, VALUE *argv, VALUE self)
+{
+ VALUE tag, type = Qnil, ary, args[2], chunk;
+ const char *cfmt = "V";
+
+ rb_scan_args (argc, argv, "11", &tag, &type);
+
+ ary = rb_ary_new4 (1, &self);
+
+ if (type == sym_char)
+ cfmt = "c";
+ else if (type == sym_short)
+ cfmt = "v";
+ else if (type == sym_long_long)
+ cfmt = "q";
+
+ args[0] = tag;
+ args[1] = rb_funcall (ary, id_pack, 1, rb_str_new2 (cfmt));
+ chunk = rb_class_new_instance (2, args, cChunk);
+
+ return rb_ary_new4 (1, &chunk);
+}
+
+static VALUE
+float_to_eet_chunks (int argc, VALUE *argv, VALUE self)
+{
+ VALUE tag, type = Qnil, args[2], chunk;
+ char buf[65], *loc;
+ double d;
+ int len;
+
+ rb_scan_args (argc, argv, "11", &tag, &type);
+
+ d = NUM2DBL (self);
+
+ /* switch locale to make sure we get proper snprintf output */
+ loc = setlocale (LC_NUMERIC, "C");
+
+ len = snprintf (buf, sizeof (buf) - 1, "%a",
+ type == sym_double ? d : (float) d);
+
+ if (loc)
+ setlocale (LC_NUMERIC, loc);
+
+ buf[++len] = '\0';
+
+ args[0] = tag;
+ args[1] = rb_str_new (buf, len);
+ chunk = rb_class_new_instance (2, args, cChunk);
+
+ return rb_ary_new4 (1, &chunk);
+}
+
void
Init_eet_ext ()
{
rb_define_singleton_method (c, "open", c_open, -1);
rb_define_method (c, "initialize", c_init, -1);
rb_define_method (c, "close", c_close, 0);
- rb_define_method (c, "list", c_list, -1);
+ rb_define_method (c, "entries", c_entries, 0);
+ rb_define_method (c, "[]", c_glob, 1);
rb_define_method (c, "delete", c_delete, 1);
rb_define_method (c, "read", c_read, 1);
rb_define_method (c, "write", c_write, -1);
rb_define_method (c, "read_image", c_read_image, 1);
rb_define_method (c, "write_image", c_write_image, -1);
+
+ cStream = rb_define_class_under (m, "Stream", rb_cArray);
+
+ cChunk = rb_define_class_under (m, "Chunk", rb_cObject);
+ rb_define_method (cChunk, "initialize", chunk_init, 2);
+ rb_define_method (cChunk, "to_s", chunk_to_s, 0);
+
+ rb_define_attr (cChunk, "tag", 1, 0);
+ rb_define_attr (cChunk, "data", 1, 0);
+
+ rb_define_method (rb_cObject, "to_eet", c_to_eet, 0);
+
+ rb_define_method (rb_cInteger, "to_eet_chunks", int_to_eet_chunks, -1);
+ rb_define_method (rb_cFloat, "to_eet_chunks", float_to_eet_chunks, -1);
+
+ eEetError = rb_define_class_under (m, "EetError", rb_eStandardError);
+ eNameError = rb_define_class_under (m, "NameError", eEetError);
+ ePropError = rb_define_class_under (m, "PropertyError", eEetError);
+
+ id_include = rb_intern ("include?");
+ id_to_s = rb_intern ("to_s");
+ id_keys = rb_intern ("keys");
+ id_pack = rb_intern ("pack");
+ id_to_eet_chunks = rb_intern ("to_eet_chunks");
+ id_to_eet_name = rb_intern ("to_eet_name");
+ id_to_eet_properties = rb_intern ("to_eet_properties");
+ id_tag = rb_intern ("@tag");
+ id_data = rb_intern ("@data");
+ sym_lossy = ID2SYM (rb_intern ("lossy"));
+ sym_level = ID2SYM (rb_intern ("level"));
+ sym_quality = ID2SYM (rb_intern ("quality"));
+ sym_char = ID2SYM (rb_intern ("char"));
+ sym_short = ID2SYM (rb_intern ("short"));
+ sym_long_long = ID2SYM (rb_intern ("long_long"));
+ sym_double = ID2SYM (rb_intern ("double"));
}
projects / ruby-eet.git / blobdiff