--- /dev/null
+#include <stdio.h>
+#include <string.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_TRUETYPE_TABLES_H
+#include <fontconfig/fontconfig.h>
+#include <fontconfig/fcfreetype.h>
+
+#if defined (FLT_GUI)
+
+#include <m17n-gui.h>
+#define PROGNAME "flt-gui"
+
+#elif defined (FLT_OTF)
+
+#include <m17n-flt.h>
+#include <otf.h>
+#define PROGNAME "flt-otf"
+
+#else /* defined (FLT_HB) */
+
+#include <m17n-flt.h>
+#include <harfbuzz.h>
+#define PROGNAME "flt-hb"
+
+#endif
+
+static FT_Library ft_library;
+
+FT_Face
+new_face (char *fontname, char **err)
+{
+ FcPattern *pat;
+ FcChar8 *fam, *file;
+ double pixelsize;
+ FcFontSet *fs;
+ FcObjectSet *os;
+ FT_Face face;
+
+ pat = FcNameParse ((FcChar8 *) fontname);
+ if (! pat)
+ {
+ *err = "invalid name format";
+ return NULL;
+ }
+ if (FcPatternGetString (pat, FC_FAMILY, 0, &fam) != FcResultMatch)
+ {
+ *err = "no family name";
+ return NULL;
+ }
+ if (FcPatternGetDouble (pat, FC_PIXEL_SIZE, 0, &pixelsize) != FcResultMatch)
+ pixelsize = 20;
+ FcPatternAddBool (pat, FC_SCALABLE, FcTrue);
+ FcPatternDel (pat, FC_PIXEL_SIZE);
+ os = FcObjectSetBuild (FC_FILE, NULL);
+ fs = FcFontList (NULL, pat, os);
+ if (fs->nfont == 0)
+ {
+ *err = "no matching font";
+ return NULL;
+ }
+ FcPatternGetString (fs->fonts[0], FC_FILE, 0, &file);
+
+ if (FT_New_Face (ft_library, (char *) file, 0, &face))
+ {
+ FcFontSetDestroy (fs);
+ FcObjectSetDestroy (os);
+ FcPatternDestroy (pat);
+ *err = "font open fail";
+ return NULL;
+ }
+ FcFontSetDestroy (fs);
+ FcObjectSetDestroy (os);
+ FcPatternDestroy (pat);
+ if (FT_Set_Pixel_Sizes (face, pixelsize, pixelsize))
+ {
+ *err = "set pixelsize fail";
+ FT_Done_Face (face);
+ return NULL;
+ }
+ return face;
+}
+
+#ifdef FLT_GUI
+
+typedef struct
+{
+ MFont *font;
+ FT_Face face;
+} MFLTFont;
+
+MFrame *frame;
+
+MFLTFont *
+open_font (char *fontname, char **err)
+{
+ FT_Face ft_face = new_face (fontname, err);
+ MFLTFont *font;
+ MFace *face;
+ MPlist *plist;
+ MFontset *fontset;
+
+ if (! ft_face)
+ return NULL;
+ face = mface ();
+ plist = mplist ();
+ fontset = mfontset ("generic");
+ mface_put_prop (face, Mfontset, fontset);
+ mplist_add (plist, Mface, face);
+ mplist_add (plist, Mdevice, Mnil);
+ frame = mframe (plist);
+ m17n_object_unref (plist);
+ m17n_object_unref (face);
+ m17n_object_unref (fontset);
+
+ font = calloc (1, sizeof (MFLTFont));
+ font->font = mfont_encapsulate (frame, Mfreetype, ft_face);
+ font->face = ft_face;
+ return font;
+}
+
+void
+close_font (MFLTFont *font)
+{
+ FT_Done_Face (font->face);
+ free (font);
+ m17n_object_unref (frame);
+}
+
+int
+flt (MText *mt, int from, int to, MFLTFont *font, char *flt_name)
+{
+ mtext_put_prop (mt, from, to, Mfont, font->font);
+ mdraw_text_extents (frame, mt, from, to, NULL, NULL, NULL, NULL);
+ return 0;
+}
+
+#else /* FLT_OTF or FLT_HB */
+
+typedef struct {
+ MFLTFont font;
+ FT_Face face;
+} FontInfo;
+
+int
+get_glyph_id (MFLTFont *font, MFLTGlyph *g)
+{
+ FT_Face face = ((FontInfo *) font)->face;
+
+ g->code = FT_Get_Char_Index (face, g->code);
+
+ return (g->code ? 0 : -1);
+}
+
+int
+get_metric (MFLTFont *font, MFLTGlyphString *gstring, int from, int to)
+{
+ FT_Face face = ((FontInfo *) font)->face;
+
+ for (; from < to; from++)
+ {
+ MFLTGlyph *g = gstring->glyphs + from;
+ FT_Glyph_Metrics *metrics;
+
+ if (FT_Load_Glyph (face, g->code, FT_LOAD_DEFAULT))
+ return -1;
+ metrics = &face->glyph->metrics;
+ g->lbearing = metrics->horiBearingX;
+ g->rbearing = metrics->horiBearingX + metrics->width;
+ g->xadv = metrics->horiAdvance;
+ g->yadv = metrics->vertAdvance;
+ g->ascent = metrics->horiBearingY;
+ g->descent = metrics->height - metrics->horiBearingY;
+ }
+ return 0;
+}
+
+int
+flt (MText *mt, int from, int to, MFLTFont *font, char *flt_name)
+{
+ MFLTGlyphString gstring;
+ int len = to - from;
+ int i;
+
+ memset (&gstring, 0, sizeof (MFLTGlyphString));
+ gstring.glyph_size = sizeof (MFLTGlyph);
+ gstring.allocated = len * 2;
+ gstring.glyphs = alloca (sizeof (MFLTGlyph) * gstring.allocated);
+ for (i = 0; i < len; i++)
+ gstring.glyphs[i].c = mtext_ref_char (mt, from + i);
+ gstring.used = len;
+ return mflt_run (&gstring, 0, len, font, msymbol (flt_name));
+}
+
+#ifdef FLT_OTF
+
+typedef struct {
+ MFLTFont font;
+ FT_Face face;
+ OTF *otf;
+} FontInfoOTF;
+
+#define DEVICE_DELTA(table, size) \
+ (((size) >= (table).StartSize && (size) <= (table).EndSize) \
+ ? ((table).DeltaValue[(size) - (table).StartSize] << 6) \
+ : 0)
+
+static void
+adjust_anchor (OTF_Anchor *anchor, FT_Face face,
+ unsigned code, unsigned x_ppem, unsigned y_ppem, int *x, int *y)
+{
+ if (anchor->AnchorFormat == 2)
+ {
+ FT_Outline *outline;
+ int ap = anchor->f.f1.AnchorPoint;
+
+ FT_Load_Glyph (face, (FT_UInt) code, FT_LOAD_MONOCHROME);
+ outline = &face->glyph->outline;
+ if (ap < outline->n_points)
+ {
+ *x = outline->points[ap].x;
+ *y = outline->points[ap].y;
+ }
+ }
+ else if (anchor->AnchorFormat == 3)
+ {
+ if (anchor->f.f2.XDeviceTable.offset)
+ *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, x_ppem);
+ if (anchor->f.f2.YDeviceTable.offset)
+ *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, y_ppem);
+ }
+}
+
+char *
+tag_name (char *str, unsigned tag)
+{
+ *str++ = tag >> 24;
+ *str++ = (tag >> 16) & 0xFF;
+ *str++ = (tag >> 8) & 0xFF;
+ *str++ = tag & 0xFF;
+ return str;
+}
+
+void
+encode_features (char *str, int count, unsigned *features)
+{
+ int all = 0;
+ int i;
+
+ for (i = 0; i < count; i++)
+ {
+ unsigned tag = features[i];
+
+ if (tag == 0)
+ all = 1;
+ else
+ {
+ if (i > 0)
+ *str++ = ',';
+ if (all)
+ *str++ = '~';
+ str = tag_name (str, tag);
+ }
+ }
+ if (all)
+ {
+ if (i > 1)
+ *str++ = ',';
+ *str++ = '*';
+ }
+ *str = '\0';
+}
+
+int
+drive_otf (MFLTFont *font, MFLT_OTF_Spec *spec,
+ MFLTGlyphString *in, int from, int to,
+ MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
+{
+ int len = to - from;
+ int i, gidx;
+ OTF *otf = ((FontInfoOTF *) font)->otf;
+ OTF_GlyphString otf_gstring;
+ OTF_Glyph *otfg;
+ char script[4], langsys[4];
+ char *gsub_features = NULL, *gpos_features = NULL;
+
+ if (len == 0)
+ return from;
+
+ if (! otf)
+ goto simple_copy;
+ otf_gstring.glyphs = NULL;
+ if (OTF_get_table (otf, "head") < 0)
+ {
+ OTF_close (otf);
+ ((FontInfoOTF *) font)->otf = NULL;
+ goto simple_copy;
+ }
+
+ tag_name (script, spec->script);
+ tag_name (langsys, spec->langsys);
+
+ if (spec->gsub_count > 0)
+ {
+ gsub_features = alloca (6 * spec->gsub_count);
+ if (gsub_features)
+ {
+ if (OTF_check_table (otf, "GSUB") < 0)
+ gsub_features = NULL;
+ else
+ encode_features (gsub_features, spec->gsub_count, spec->gsub);
+ }
+ }
+ if (spec->gpos_count)
+ {
+ gpos_features = alloca (6 * spec->gpos_count);
+ if (gpos_features)
+ {
+ if (OTF_check_table (otf, "GPOS") < 0)
+ gpos_features = NULL;
+ else
+ encode_features (gpos_features, spec->gpos_count, spec->gpos);
+ }
+ }
+
+ otf_gstring.size = otf_gstring.used = len;
+ otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len);
+ memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
+ for (i = 0; i < len; i++)
+ {
+ otf_gstring.glyphs[i].c = in->glyphs[from + i].c;
+ otf_gstring.glyphs[i].glyph_id = in->glyphs[from + i].code;
+ }
+
+ OTF_drive_gdef (otf, &otf_gstring);
+ gidx = out->used;
+
+ if (gsub_features)
+ {
+ if (OTF_drive_gsub (otf, &otf_gstring, script, langsys, gsub_features)
+ < 0)
+ goto simple_copy;
+ if (out->allocated < out->used + otf_gstring.used)
+ return -2;
+ for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; i++, otfg++)
+ {
+ MFLTGlyph *g = out->glyphs + out->used;
+
+ *g = in->glyphs[from + otfg->f.index.from];
+ g->c = otfg->c;
+ g->code = otfg->glyph_id;
+ out->used++;
+ }
+ }
+ else
+ {
+ if (out->allocated < out->used + len)
+ return -2;
+ for (i = 0; i < len; i++)
+ out->glyphs[out->used++] = in->glyphs[from + i];
+ }
+
+ font->get_metric (font, out, gidx, out->used);
+
+ if (gpos_features)
+ {
+ FT_Face face;
+ MFLTGlyph *base = NULL, *mark = NULL, *g;
+ int x_ppem, y_ppem, x_scale, y_scale;
+
+ if (OTF_check_features (otf, 1,
+ spec->script, spec->langsys,
+ spec->gpos, spec->gpos_count) != 1
+ || (OTF_drive_gpos (otf, &otf_gstring, script, langsys,
+ gpos_features) < 0))
+ return to;
+
+ face = ((FontInfo *) font)->face;
+ x_ppem = face->size->metrics.x_ppem;
+ y_ppem = face->size->metrics.y_ppem;
+ x_scale = face->size->metrics.x_scale;
+ y_scale = face->size->metrics.y_scale;
+
+ for (i = 0, otfg = otf_gstring.glyphs, g = out->glyphs + gidx;
+ i < otf_gstring.used; i++, otfg++, g++)
+ {
+ MFLTGlyph *prev;
+
+ if (! otfg->glyph_id)
+ continue;
+ switch (otfg->positioning_type)
+ {
+ case 0:
+ break;
+ case 1: case 2:
+ {
+ int format = otfg->f.f1.format;
+
+ if (format & OTF_XPlacement)
+ adjustment[i].xoff
+ = otfg->f.f1.value->XPlacement * x_scale / 0x10000;
+ if (format & OTF_XPlaDevice)
+ adjustment[i].xoff
+ += DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, x_ppem);
+ if (format & OTF_YPlacement)
+ adjustment[i].yoff
+ = - (otfg->f.f1.value->YPlacement * y_scale / 0x10000);
+ if (format & OTF_YPlaDevice)
+ adjustment[i].yoff
+ -= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, y_ppem);
+ if (format & OTF_XAdvance)
+ adjustment[i].xadv
+ += otfg->f.f1.value->XAdvance * x_scale / 0x10000;
+ if (format & OTF_XAdvDevice)
+ adjustment[i].xadv
+ += DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, x_ppem);
+ if (format & OTF_YAdvance)
+ adjustment[i].yadv
+ += otfg->f.f1.value->YAdvance * y_scale / 0x10000;
+ if (format & OTF_YAdvDevice)
+ adjustment[i].xadv
+ += DEVICE_DELTA (otfg->f.f1.value->YAdvDevice, y_ppem);
+ adjustment[i].set = 1;
+ }
+ break;
+ case 3:
+ /* Not yet supported. */
+ break;
+ case 4: case 5:
+ if (! base)
+ break;
+ prev = base;
+ goto label_adjust_anchor;
+ default: /* i.e. case 6 */
+ if (! mark)
+ break;
+ prev = mark;
+
+ label_adjust_anchor:
+ {
+ int base_x, base_y, mark_x, mark_y;
+
+ base_x = otfg->f.f4.base_anchor->XCoordinate * x_scale / 0x10000;
+ base_y = otfg->f.f4.base_anchor->YCoordinate * y_scale / 0x10000;
+ mark_x = otfg->f.f4.mark_anchor->XCoordinate * x_scale / 0x10000;
+ mark_y = otfg->f.f4.mark_anchor->YCoordinate * y_scale / 0x10000;;
+
+ if (otfg->f.f4.base_anchor->AnchorFormat != 1)
+ adjust_anchor (otfg->f.f4.base_anchor, face, prev->code,
+ x_ppem, y_ppem, &base_x, &base_y);
+ if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
+ adjust_anchor (otfg->f.f4.mark_anchor, face, g->code,
+ x_ppem, y_ppem, &mark_x, &mark_y);
+ adjustment[i].xoff = (base_x - mark_x);
+ adjustment[i].yoff = - (base_y - mark_y);
+ adjustment[i].back = (g - prev);
+ adjustment[i].set = 1;
+ }
+ }
+ if (otfg->GlyphClass == OTF_GlyphClass0)
+ base = mark = g;
+ else if (otfg->GlyphClass == OTF_GlyphClassMark)
+ mark = g;
+ else
+ base = g;
+ }
+ }
+ free (otf_gstring.glyphs);
+ return to;
+
+ simple_copy:
+ font->get_metric (font, in, from, to);
+ for (i = 0; i < len; i++)
+ {
+ MFLTGlyph *g = in->glyphs + (from + i);
+
+ out->glyphs[out->used++] = *g;
+ }
+ if (otf_gstring.glyphs)
+ free (otf_gstring.glyphs);
+ return to;
+}
+
+MFLTFont *
+open_font (char *fontname, char **err)
+{
+ FT_Face face = new_face (fontname, err);
+ FontInfoOTF *font_info;
+
+ if (! face)
+ return NULL;
+ font_info = malloc (sizeof (FontInfoOTF));
+ font_info->font.get_glyph_id = get_glyph_id;
+ font_info->font.get_metric = get_metric;
+ font_info->font.drive_otf = drive_otf;
+ font_info->face = face;
+ font_info->otf = OTF_open_ft_face (face);
+ return ((MFLTFont *) font_info);
+}
+
+void
+close_font (MFLTFont *font)
+{
+ FontInfoOTF *font_info = (FontInfoOTF *) font;
+
+ OTF_close (font_info->otf);
+ FT_Done_Face (font_info->face);
+ free (font_info);
+}
+
+#else /* FLT_HB */
+
+typedef struct {
+ HB_UShort count;
+ HB_UShort *indices;
+} FeatureInfo;
+
+typedef struct {
+ FeatureInfo gsub;
+ FeatureInfo gpos;
+} GsubGposInfo;
+
+typedef struct {
+ MFLTFont font;
+ FT_Face face;
+ HB_FontRec hb_font;
+ HB_StreamRec gdef_stream;
+ HB_GDEF gdef;
+ HB_GSUB gsub;
+ HB_GPOS gpos;
+ MPlist *otf_spec_cache;
+} FontInfoHB;
+
+HB_Bool
+convertStringToGlyphIndices (HB_Font font, const HB_UChar16 *string,
+ hb_uint32 length, HB_Glyph *glyphs,
+ hb_uint32 *numGlyphs, HB_Bool rightToLeft)
+{
+ return TRUE;
+}
+
+void
+getGlyphAdvances (HB_Font font, const HB_Glyph *glyphs, hb_uint32 numGlyphs,
+ HB_Fixed *advances, int flags /*HB_ShaperFlag*/)
+{
+ hb_uint32 i;
+
+ for (i = 0; i < numGlyphs; i++)
+ advances[i] =0;
+}
+
+HB_Bool
+canRender (HB_Font font, const HB_UChar16 *string, hb_uint32 length)
+{
+ return TRUE;
+}
+
+HB_Error
+getPointInOutline (HB_Font font, HB_Glyph glyph, int flags /*HB_ShaperFlag*/,
+ hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos,
+ hb_uint32 *nPoints)
+{
+ FT_Face face = font->faceData;
+ HB_Error error;
+
+ if ((error = (HB_Error) FT_Load_Glyph (face, glyph, flags)))
+ return error;
+ if (face->glyph->format != ft_glyph_format_outline)
+ return (HB_Error) HB_Err_Invalid_GPOS_SubTable;
+ *nPoints = face->glyph->outline.n_points;
+ if (! *nPoints)
+ return HB_Err_Ok;
+ if (point > *nPoints)
+ return (HB_Error) HB_Err_Invalid_GPOS_SubTable;
+
+ *xpos = face->glyph->outline.points[point].x;
+ *ypos = face->glyph->outline.points[point].y;
+
+ return HB_Err_Ok;
+}
+
+void
+getGlyphMetrics (HB_Font font, HB_Glyph glyph, HB_GlyphMetrics *metrics)
+{
+}
+
+HB_Fixed
+getFontMetric (HB_Font font, HB_FontMetric metric)
+{
+ return 0;
+}
+
+#define MAKE_TAG(name) ((((FT_ULong) (name)[0]) << 24) \
+ | (((FT_ULong) (name)[1]) << 16) \
+ | (((FT_ULong) (name)[2]) << 8) \
+ | (name)[3])
+
+HB_Error
+new_stream (FT_Face face, char *tagname, HB_Stream stream)
+{
+ FT_ULong tag = MAKE_TAG (tagname);
+ FT_ULong len;
+ FT_Byte *buf;
+
+ if (! FT_IS_SFNT (face))
+ return HB_Err_Invalid_Argument;
+ len = 0;
+ if (FT_Load_Sfnt_Table (face, tag, 0, NULL, &len))
+ return HB_Err_Table_Missing;
+ buf = malloc (len);
+ if (! buf)
+ return HB_Err_Out_Of_Memory;
+ if (FT_Load_Sfnt_Table (face, tag, 0, buf, &len))
+ {
+ free (buf);
+ return HB_Err_Table_Missing;
+ }
+ stream->base = (HB_Byte *) buf;
+ stream->size = len;
+ stream->pos = 0;
+ stream->cursor = NULL;
+
+ return HB_Err_Ok;
+}
+
+HB_Error
+load_gdef (FontInfoHB *font_info)
+{
+ HB_Error err;
+
+ if (! font_info->gdef_stream.base)
+ {
+ err = new_stream ((FT_Face) font_info->hb_font.faceData, "GDEF",
+ &font_info->gdef_stream);
+ if (err != HB_Err_Ok)
+ return err;
+ }
+ return HB_Load_GDEF_Table (&font_info->gdef_stream, &font_info->gdef);
+}
+
+HB_Error
+load_gsub (FontInfoHB *font_info)
+{
+ HB_Error err;
+ HB_StreamRec stream;
+ HB_LookupList *lookup_list;
+ int i;
+
+ if (! font_info->gdef)
+ {
+ if ((err = load_gdef (font_info)) != HB_Err_Ok)
+ return err;
+ }
+ err = new_stream ((FT_Face) font_info->hb_font.faceData, "GSUB", &stream);
+ if (err != HB_Err_Ok)
+ return err;
+ err = HB_Load_GSUB_Table (&stream, &font_info->gsub,
+ font_info->gdef, &font_info->gdef_stream);
+ free (stream.base);
+ lookup_list = &font_info->gsub->LookupList;
+ for (i = 0; i < lookup_list->LookupCount; i++)
+ lookup_list->Properties[i] = HB_GLYPH_PROPERTIES_UNKNOWN;
+ return err;
+}
+
+HB_Error
+load_gpos (FontInfoHB *font_info)
+{
+ HB_Error err;
+ HB_StreamRec stream;
+ HB_LookupList *lookup_list;
+ int i;
+
+ if (! font_info->gdef)
+ {
+ if ((err = load_gdef (font_info)) != HB_Err_Ok)
+ return err;
+ }
+ err = new_stream ((FT_Face) font_info->hb_font.faceData, "GPOS", &stream);
+ if (err != HB_Err_Ok)
+ return err;
+ err = HB_Load_GPOS_Table (&stream, &font_info->gpos,
+ font_info->gdef, &font_info->gdef_stream);
+ free (stream.base);
+ lookup_list = &font_info->gpos->LookupList;
+ for (i = 0; i < lookup_list->LookupCount; i++)
+ lookup_list->Properties[i] = HB_GLYPH_PROPERTIES_UNKNOWN;
+ return err;
+}
+
+const HB_FontClass hb_fontClass = {
+ convertStringToGlyphIndices, getGlyphAdvances, canRender,
+ getPointInOutline, getGlyphMetrics, getFontMetric
+};
+
+HB_Error
+setup_features (int gsubp, FontInfoHB *font_info, MFLT_OTF_Spec *spec,
+ FeatureInfo *info)
+{
+ int count, preordered;
+ unsigned int *features;
+ FT_UShort script, langsys;
+ FT_UShort req_feature, index;
+ FT_UInt *feature_list;
+ int i, j, k;
+ HB_Error err;
+
+ if (gsubp)
+ {
+ if (! font_info->gsub)
+ {
+ if ((err = load_gsub (font_info)) != HB_Err_Ok)
+ return err;
+ }
+ if ((err = HB_GSUB_Select_Script (font_info->gsub, spec->script, &script))
+ != HB_Err_Ok)
+ return err;
+ if (spec->langsys)
+ {
+ if ((err = HB_GSUB_Select_Language (font_info->gsub, spec->langsys,
+ script, &langsys, &req_feature))
+ != HB_Err_Ok)
+ return err;
+ }
+ else
+ langsys = req_feature = 0xFFFF;
+ count = spec->gsub_count;
+ features = spec->gsub;
+ }
+ else
+ {
+ if (! font_info->gpos)
+ {
+ if ((err = load_gpos (font_info)) != HB_Err_Ok)
+ return err;
+ }
+ if ((err = HB_GPOS_Select_Script (font_info->gpos, spec->script, &script))
+ != HB_Err_Ok)
+ return err;
+ if (spec->langsys)
+ {
+ if ((err = HB_GPOS_Select_Language (font_info->gpos, spec->langsys,
+ script, &langsys, &req_feature))
+ != HB_Err_Ok)
+ return err;
+ }
+ else
+ langsys = req_feature = 0xFFFF;
+ count = spec->gpos_count;
+ features = spec->gpos;
+ }
+ feature_list = NULL;
+ for (preordered = 0; preordered < count; preordered++)
+ if (features[preordered] == 0)
+ {
+ if ((err = (gsubp
+ ? HB_GSUB_Query_Features (font_info->gsub, script, langsys,
+ &feature_list)
+ : HB_GPOS_Query_Features (font_info->gpos, script, langsys,
+ &feature_list)))
+ != HB_Err_Ok)
+ return err;
+ break;
+ }
+ if (feature_list)
+ for (i = 0; feature_list[i]; i++);
+ else
+ i = preordered;
+ info->indices = malloc (sizeof (FT_UShort) * ((req_feature != 0xFFFF) + i));
+ i = 0;
+ if (req_feature != 0xFFFF)
+ info->indices[i++] = req_feature;
+ for (j = 0; j < preordered; j++)
+ {
+ if ((err = (gsubp
+ ? HB_GSUB_Select_Feature (font_info->gsub, features[j],
+ script, langsys, &index)
+ : HB_GPOS_Select_Feature (font_info->gpos, features[j],
+ script, langsys, &index)))
+ != HB_Err_Ok)
+ return err;
+ info->indices[i++] = index;
+ }
+ if (feature_list)
+ for (j = 0; feature_list[j]; j++)
+ {
+ for (k = preordered + 1; k < count; k++)
+ if (feature_list[j] == features[k])
+ break;
+ if (k == count)
+ {
+ if ((gsubp
+ ? HB_GSUB_Select_Feature (font_info->gsub, feature_list[j],
+ script, langsys, &index)
+ : HB_GPOS_Select_Feature (font_info->gpos, feature_list[j],
+ script, langsys, &index))
+ != FT_Err_Ok)
+ return -1;
+ info->indices[i++] = index;
+ }
+ }
+ info->count = i;
+ return HB_Err_Ok;
+}
+
+GsubGposInfo *
+setup_otf_spec (MFLTFont *font, MFLT_OTF_Spec *spec)
+{
+ FontInfoHB *font_info = (FontInfoHB *) font;
+ GsubGposInfo *ginfo;
+
+ if (spec->gsub_count + spec->gpos_count == 0)
+ return NULL;
+ ginfo = mplist_get (font_info->otf_spec_cache, spec->sym);
+ if (ginfo)
+ return (ginfo->gsub.count + ginfo->gpos.count > 0 ? ginfo : NULL);
+ ginfo = calloc (1, sizeof (GsubGposInfo));
+ mplist_push (font_info->otf_spec_cache, spec->sym, ginfo);
+ if (setup_features (1, font_info, spec, &(ginfo->gsub)) != HB_Err_Ok)
+ return NULL;
+ if (setup_features (0, font_info, spec, &(ginfo->gpos)) != HB_Err_Ok)
+ return NULL;
+ return ginfo;
+}
+
+int
+drive_otf (MFLTFont *font, MFLT_OTF_Spec *spec,
+ MFLTGlyphString *in, int from, int to,
+ MFLTGlyphString *out, MFLTGlyphAdjustment *adjustment)
+{
+ FontInfoHB *font_info = (FontInfoHB *) font;
+ int len = to - from;
+ int i, gidx;
+ HB_Buffer buf;
+ GsubGposInfo *ginfo;
+ HB_UShort *apply_order_save;
+ HB_UShort apply_count_save;
+ int apply_saved = 0;
+ int gpos_applied = 0;
+ HB_Error err;
+
+ if (len == 0)
+ return from;
+
+ buf = NULL;
+ if (hb_buffer_new (&buf) != FT_Err_Ok)
+ goto simple_copy;
+ for (i = from; i < to; i++)
+ {
+ if (hb_buffer_add_glyph (buf, in->glyphs[i].code, 0, i) != FT_Err_Ok)
+ goto simple_copy;
+ }
+ ginfo = setup_otf_spec (font, spec);
+ if (! ginfo)
+ goto simple_copy;
+ if (ginfo->gsub.count > 0)
+ {
+ if (! font_info->gdef
+ && load_gdef (font_info) != HB_Err_Ok)
+ goto simple_copy;
+ apply_order_save = font_info->gsub->FeatureList.ApplyOrder;
+ apply_count_save = font_info->gsub->FeatureList.ApplyCount;
+ apply_saved = 1;
+ font_info->gsub->FeatureList.ApplyOrder = ginfo->gsub.indices;
+ font_info->gsub->FeatureList.ApplyCount = ginfo->gsub.count;
+ err = HB_GSUB_Apply_String (font_info->gsub, buf);
+ if (err != HB_Err_Ok && err != HB_Err_Not_Covered)
+ goto simple_copy;
+ if (out->used + buf->in_length > out->allocated)
+ return -2;
+ }
+
+ if (ginfo->gpos.count > 0
+ && (font_info->gpos || load_gpos (font_info) == HB_Err_Ok))
+ {
+ if (! apply_saved)
+ {
+ apply_order_save = font_info->gsub->FeatureList.ApplyOrder;
+ apply_count_save = font_info->gsub->FeatureList.ApplyCount;
+ apply_saved = 1;
+ }
+ font_info->gpos->FeatureList.ApplyOrder = ginfo->gpos.indices;
+ font_info->gpos->FeatureList.ApplyCount = ginfo->gpos.count;
+ err = HB_GPOS_Apply_String (&font_info->hb_font, font_info->gpos,
+ FT_LOAD_DEFAULT, buf, FALSE, FALSE);
+ if (err == HB_Err_Ok)
+ gpos_applied = 1;
+ }
+
+ if (apply_saved)
+ {
+ font_info->gsub->FeatureList.ApplyOrder = apply_order_save;
+ font_info->gsub->FeatureList.ApplyCount = apply_count_save;
+ }
+
+ gidx = out->used;
+
+ for (i = 0; i < buf->in_length; i++)
+ {
+ HB_GlyphItem hg = buf->in_string + i;
+ HB_Position pos = buf->positions + i;
+ MFLTGlyph *g;
+
+ out->glyphs[out->used] = in->glyphs[hg->cluster];
+ g = out->glyphs + out->used++;
+ if (g->code != hg->gindex)
+ g->c = 0, g->code = hg->gindex;
+ adjustment[i].set = gpos_applied;
+ if (gpos_applied)
+ {
+ adjustment[i].xadv = pos->x_advance;
+ adjustment[i].yadv = pos->y_advance;
+ adjustment[i].xoff = pos->x_pos;
+ adjustment[i].yoff = - pos->y_pos;
+ adjustment[i].back = pos->back;
+ adjustment[i].advance_is_absolute = pos->new_advance;
+ }
+ }
+ return to;
+
+ simple_copy:
+ if (buf)
+ hb_buffer_free (buf);
+ for (i = 0; i < len; i++)
+ out->glyphs[out->used++] = in->glyphs[from + i];
+ return to;
+}
+
+MFLTFont *
+open_font (char *fontname, char **err)
+{
+ FT_Face face = new_face (fontname, err);
+ FontInfoHB *font_info;
+
+ if (! face)
+ return NULL;
+ font_info = calloc (1, sizeof (FontInfoHB));
+ font_info->font.get_glyph_id = get_glyph_id;
+ font_info->font.get_metric = get_metric;
+ font_info->font.drive_otf = drive_otf;
+ font_info->face = face;
+ font_info->hb_font.klass = &hb_fontClass;
+ font_info->hb_font.faceData = face;
+ font_info->hb_font.userData = NULL;
+ font_info->hb_font.x_ppem = face->size->metrics.x_ppem;
+ font_info->hb_font.x_scale = face->size->metrics.x_scale;
+ font_info->hb_font.y_scale = face->size->metrics.y_scale;
+ font_info->hb_font.y_ppem = face->size->metrics.y_ppem;
+ font_info->otf_spec_cache = mplist ();
+ return ((MFLTFont *) font_info);
+}
+
+void
+close_font (MFLTFont *font)
+{
+ FontInfoHB *font_info = (FontInfoHB *) font;
+ MPlist *p;
+
+ if (font_info->gdef)
+ {
+ HB_Done_GDEF_Table (font_info->gdef);
+ free (font_info->gdef_stream.base);
+ }
+ if (font_info->gsub)
+ HB_Done_GSUB_Table (font_info->gsub);
+ if (font_info->gpos)
+ HB_Done_GPOS_Table (font_info->gpos);
+ FT_Done_Face ((FT_Face) (font_info->hb_font.faceData));
+ for (p = font_info->otf_spec_cache; mplist_key (p) != Mnil;
+ p = mplist_next (p))
+ {
+ GsubGposInfo *ginfo = mplist_value (p);
+
+ if (ginfo->gsub.count > 0)
+ free (ginfo->gsub.indices);
+ if (ginfo->gpos.count > 0)
+ free (ginfo->gpos.indices);
+ }
+ m17n_object_unref (font_info->otf_spec_cache);
+ free (font_info);
+}
+
+#endif
+#endif
+
+int
+main (int argc, char **argv)
+{
+ char *font_name, *flt_name;
+ char *err;
+ MText *mt;
+ MFLTFont *font;
+ int len, i, j;
+
+ if (argc < 3)
+ {
+ fprintf (stderr, "Usage: flt FONT-NAME FLT-NAME < TEXT-FILE\n");
+ exit (1);
+ }
+
+ font_name = argv[1];
+ flt_name = argv[2];
+
+ FT_Init_FreeType (&ft_library);
+ M17N_INIT ();
+ font = open_font (font_name, &err);
+ if (! font)
+ {
+ fprintf (stderr, "Font error: %s: %s\n", argv[1], err);
+ exit (1);
+ }
+
+ mt = mconv_decode_stream (msymbol ("utf-8"), stdin);
+ len = mtext_len (mt);
+ for (i = 0, j = mtext_character (mt, i, len, '\n'); i < len;
+ i = j + 1, j = mtext_character (mt, i, len, '\n'))
+ {
+ if (j < 0)
+ j = len;
+ if (flt (mt, i, j, font, flt_name) < 0)
+ {
+ fprintf (stderr, "Error in FLT processing.\n");
+ exit (1);
+ }
+ }
+ m17n_object_unref (mt);
+ close_font (font);
+ M17N_FINI ();
+ return 0;
+}
projects / m17n / m17n-test.git / blobdiff