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-rw-r--r--Build/source/texk/ttf2pk2/ftlib.c859
1 files changed, 859 insertions, 0 deletions
diff --git a/Build/source/texk/ttf2pk2/ftlib.c b/Build/source/texk/ttf2pk2/ftlib.c
new file mode 100644
index 00000000000..a0c5aaad065
--- /dev/null
+++ b/Build/source/texk/ttf2pk2/ftlib.c
@@ -0,0 +1,859 @@
+/*
+ * ftlib.c
+ *
+ * This file is part of the ttf2pk package.
+ *
+ * Copyright 1997-1999, 2000, 2002, 2003 by
+ * Frederic Loyer <loyer@ensta.fr>
+ * Werner Lemberg <wl@gnu.org>
+ *
+ * Copyright (C) 2012, 2013 by
+ * Peter Breitenlohner <tex-live@tug.org>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_TRUETYPE_TABLES_H
+#include FT_OPENTYPE_VALIDATE_H
+
+#include "ttf2tfm.h"
+#include "ttfenc.h"
+#include "errormsg.h"
+#include "newobj.h"
+#include "ftlib.h"
+
+#define Macintosh_platform 1
+#define Macintosh_encoding 0
+
+#define Microsoft_platform 3
+#define Microsoft_Symbol_encoding 0
+#define Microsoft_Unicode_encoding 1
+
+FT_Library engine;
+FT_Face face;
+
+FT_Matrix matrix1, matrix2;
+
+int dpi, ptsize;
+
+Boolean has_gsub;
+
+TT_OS2 *os2;
+TT_Postscript *postscript;
+
+FT_Byte *GSUB_table;
+FT_ULong GSUB_length;
+FT_ULong GSUB_ptr;
+
+static inline void
+need (FT_ULong needed)
+{
+ if (GSUB_ptr + needed > GSUB_length)
+ oops("GSUB: Unexpected end of table.");
+}
+
+static inline FT_Byte
+get_Byte(void)
+{
+ return GSUB_table[GSUB_ptr++];
+}
+
+static inline signed char
+get_SByte(void)
+{
+ return (signed char) GSUB_table[GSUB_ptr++];
+}
+
+static FT_UShort
+get_UShort(void)
+{
+ unsigned int cc;
+ cc = get_Byte() << 8;
+ cc |= get_Byte();
+ return (FT_UShort) cc;
+}
+
+static FT_Short
+get_Short(void)
+{
+ int cc;
+ cc = get_SByte() << 8;
+ cc |= get_Byte();
+ return (FT_Short) cc;
+}
+
+static FT_ULong
+get_ULong(void)
+{
+ unsigned int cc;
+ cc = get_Byte() << 24;
+ cc |= get_Byte() << 16;
+ cc |= get_Byte() << 8;
+ cc |= get_Byte();
+ return (FT_ULong) cc;
+}
+
+#if 0 /* unused */
+static FT_Long
+get_Long(void)
+{
+ int cc;
+ cc = get_SByte() << 24;
+ cc |= get_Byte() << 16;
+ cc |= get_Byte() << 8;
+ cc |= get_Byte();
+ return (FT_Long) cc;
+}
+#endif
+
+typedef struct {
+ FT_UShort start;
+ FT_UShort end;
+ FT_UShort start_Index;
+} Range_Record;
+
+typedef struct {
+ FT_ULong ptr;
+ FT_UShort format;
+ FT_UShort count;
+ union {
+ FT_UShort *glyphs; /* format = 1 */
+ Range_Record *ranges; /* format = 2 */
+ } data;
+} Coverage_Item;
+
+static inline void
+fetch_Glyphs (FT_UShort count, FT_UShort *glyphs)
+{
+ int i;
+
+ need(2 * count);
+ for (i = 0; i < count; i++)
+ glyphs[i] = get_UShort();
+ for (i = 1; i < count; i++)
+ if (glyphs[i] <= glyphs[i - 1])
+ oops("Glyph[%d]=%d and Glyph[%d]=%d: out of order.", i - 1, glyphs[i - 1], i, glyphs[i]);
+}
+
+static inline FT_UShort
+fetch_Ranges (FT_UShort count, Range_Record *ranges)
+{
+ int i;
+ FT_UShort ndx = 0;
+
+ need(6 * count);
+ for (i = 0; i < count; i++)
+ {
+ ranges[i].start = get_UShort();
+ ranges[i].end = get_UShort();
+ if (ranges[i].start > ranges[i].end)
+ oops("Range[%d]: bad range=%d..%d.", i, ranges[i].start, ranges[i].end);
+ ranges[i].start_Index = get_UShort();
+ if (ranges[i].start_Index != ndx)
+ oops("Range[%d]: bad start_Index=%d (should be %d).", i, ranges[i].start_Index, ndx);
+ ndx += (ranges[i].end - ranges[i].start) + 1;
+ }
+ for (i = 1; i < count; i++)
+ if (ranges[i].start <= ranges[i-1].end)
+ oops("Range[%d]=%d..%d and Range[%d]=%d..%d: out of order.",
+ i - 1, ranges[i - 1].start, ranges[i - 1].end, i, ranges[i].start, ranges[i].end);
+ return ndx;
+}
+
+static inline FT_UShort
+fetch_Coverage (Coverage_Item *coverage)
+{
+ FT_UShort res = 0;
+ GSUB_ptr = coverage->ptr;
+ need(4);
+ coverage->format = get_UShort();
+ coverage->count = res = get_UShort();
+ switch (coverage->format)
+ {
+ case 1:
+ coverage->data.glyphs = mymalloc (res * sizeof(FT_UShort));
+#ifdef DEBUG
+ warning("Coverage Format=1 with %d Glyphs at 0x%04x.", res, coverage->ptr);
+#endif
+ fetch_Glyphs (res, coverage->data.glyphs);
+ break;
+ case 2:
+ coverage->data.ranges = mymalloc (res * sizeof(Range_Record));
+#ifdef DEBUG
+ warning("Coverage Format=1 with %d Ranges at 0x%04x.", res, coverage->ptr);
+#endif
+ res = fetch_Ranges (res, coverage->data.ranges);
+ break;
+ default:
+ oops("Coverage at 0x%04x: bad Format=%d.", coverage->ptr, coverage->format);
+ }
+ return res;
+}
+
+/*
+ * We only accept Single Substitutions (and Extensions)
+ */
+
+typedef struct {
+ FT_UShort count;
+ FT_UShort *glyphs;
+} Glyph_Array;
+
+typedef struct {
+ FT_ULong ptr;
+ FT_UShort format;
+ Coverage_Item *coverage;
+ union {
+ FT_Short *delta; /* format = 1 */
+ Glyph_Array *array; /* format = 2 */
+ } data;
+} Single_Item;
+
+typedef struct _Subst_Item {
+ Single_Item *item;
+ struct _Subst_Item *next;
+} Subst_Item;
+
+Subst_Item *Subst_list, *Subst_last;
+
+static inline void
+add_Single (Single_Item *item)
+{
+ Subst_Item *entry = mycalloc (1, sizeof(Subst_Item));
+ entry->item = item;
+ if (Subst_last)
+ Subst_last->next = entry;
+ else
+ Subst_list = entry;
+ Subst_last = entry;
+ has_gsub = True;
+}
+
+static inline void
+fetch_Single (Single_Item *item)
+{
+ int i;
+ FT_UShort val;
+
+ item->coverage = mycalloc (1, sizeof(Coverage_Item));
+ GSUB_ptr = item->ptr;
+ need(6);
+ item->format = get_UShort();
+ item->coverage->ptr = item->ptr + get_UShort();
+ switch (item->format)
+ {
+ case 1:
+ val = get_Short();
+ item->data.delta = mycalloc (1, sizeof(FT_UShort));
+ *item->data.delta = val;
+#ifdef DEBUG
+ warning("Single Substitution Format=1 with Delta=%d at 0x%04x.", val, item->ptr);
+#endif
+ fetch_Coverage (item->coverage);
+ break;
+ case 2:
+ val = get_UShort();
+ need(2 * val);
+ item->data.array = mycalloc (1, sizeof(Glyph_Array));
+ item->data.array->count = val;
+ item->data.array->glyphs = mycalloc (val, sizeof(FT_UShort));
+ for (i = 0; i < val; i++)
+ item->data.array->glyphs[i] = get_UShort();
+#ifdef DEBUG
+ warning("Single Substitution Format=2 with %d Glyphs at 0x%04x.", val, item->ptr);
+#endif
+ val = fetch_Coverage (item->coverage);
+ if (val != item->data.array->count)
+ oops("Coverage at 0x%04x: covers %d glyphs (should be %d).", item->ptr, val, item->data.array->count);
+ break;
+ default:
+ oops("Single Substitution at 0x%04x: bad Format=%d.", item->ptr, item->format);
+ }
+
+ add_Single (item);
+}
+
+typedef struct {
+ FT_UShort count;
+ Single_Item *list;
+} Lookup_Item;
+
+typedef struct {
+ FT_ULong ptr;
+ Lookup_Item *entry;
+} Lookup_Record;
+
+Lookup_Record *Lookup_List;
+FT_UShort Lookup_Count;
+
+static inline void
+fetch_Lookup (int i)
+{
+ FT_ULong Lookup_ptr = Lookup_List[i].ptr;
+
+ if (Lookup_ptr && !Lookup_List[i].entry)
+ {
+ Lookup_Item *entry = Lookup_List[i].entry = mycalloc (1, sizeof(Lookup_Item));
+ Boolean is_ext = False;
+ FT_UShort val;
+ int j;
+
+#ifdef DEBUG
+ warning("Lookup[%d] at 0x%04x.", i, Lookup_ptr);
+#endif
+ GSUB_ptr = Lookup_ptr;
+
+ /*
+ * Read Lookup Item
+ */
+ need(6);
+ val = get_UShort();
+ if (val == 7)
+ is_ext = True;
+ else if (val != 1)
+ oops("Lookup[%d] at 0x%04x: bad Type=%d.", i, Lookup_ptr, val);
+ get_UShort(); /* Ignore Lookup Flag */
+ entry->count = get_UShort();
+ entry->list = mycalloc (entry->count, sizeof(Single_Item));
+
+ need(2 * entry->count);
+ for (j = 0; j < entry->count; j++)
+ entry->list[j].ptr = Lookup_ptr + get_UShort();
+
+ if (is_ext)
+ for (j = 0; j < entry->count; j++)
+ {
+ GSUB_ptr = entry->list[j].ptr;
+ need(8);
+ val = get_UShort();
+ if (val != 1)
+ oops("Lookup[%d] Extension[%d] at 0x%04x: bad Format=%d.", i, j, entry->list[j].ptr, val);
+ val = get_UShort();
+ if (val != 1)
+ oops("Lookup[%d] Extension[%d] at 0x%04x: bad Type=%d.", i, j, entry->list[j].ptr, val);
+ entry->list[j].ptr += get_ULong();
+ }
+
+ for (j = 0; j < entry->count; j++)
+ fetch_Single (&entry->list[j]);
+ }
+}
+
+typedef struct {
+ FT_UShort count;
+ FT_UShort *list;
+} Feature_Item;
+
+typedef struct {
+ FT_Tag tag;
+ FT_ULong ptr;
+ Feature_Item *entry;
+} Feature_Record;
+
+Feature_Record *Feature_List;
+FT_UShort Feature_Count;
+
+/*
+ * We check for the `vert' or `vrt2' feature in Chinese, Japanese, and Korean
+ */
+#define FEATURE_vert FT_MAKE_TAG('v', 'e', 'r', 't')
+#define FEATURE_vrt2 FT_MAKE_TAG('v', 'r', 't', '2')
+
+#define print_Tag(t) t >> 24, (t >> 16) & 0xff, (t >> 8) & 0xff, t & 0xff
+
+static inline void
+fetch_Feature (int i)
+{
+ FT_ULong Feature_ptr = Feature_List[i].ptr;
+
+ if (Feature_ptr && !Feature_List[i].entry)
+ {
+ Feature_Item *entry = Feature_List[i].entry = mycalloc (1, sizeof(Feature_Item));
+ FT_UShort val;
+ int j;
+
+#ifdef DEBUG
+ warning("Feature[%d] '%c%c%c%c' at 0x%04x.", i, print_Tag(Feature_List[i].tag), Feature_ptr);
+#endif
+ GSUB_ptr = Feature_ptr;
+
+ /*
+ * Read Feature Item
+ */
+ need(4);
+ val = get_UShort();
+ if (val)
+ oops("Feature[%d] at 0x%04x: bad FeaturParams 0x%04x.", Feature_ptr, i, val);
+ entry->count = get_UShort();
+ entry->list = mycalloc (entry->count, sizeof(FT_UShort));
+
+ need(2*entry->count);
+ for (j = 0; j < entry->count; j++) {
+ entry->list[j] = get_UShort();
+ if (entry->list[j] >= Lookup_Count)
+ oops("Feature[%d] at 0x%04x: bad Lookup Index[%d]=%d.", i, Feature_ptr, j, entry->list[j]);
+ }
+
+ for (j = 0; j < entry->count; j++)
+ fetch_Lookup (entry->list[j]);
+ }
+}
+
+#define SCRIPT_kana FT_MAKE_TAG('k', 'a', 'n', 'a')
+#define SCRIPT_hani FT_MAKE_TAG('h', 'a', 'n', 'i')
+#define SCRIPT_hang FT_MAKE_TAG('h', 'a', 'n', 'g')
+
+#define LANGUAGE_JAN FT_MAKE_TAG('J', 'A', 'N', ' ')
+#define LANGUAGE_CHN FT_MAKE_TAG('C', 'H', 'N', ' ')
+#define LANGUAGE_KOR FT_MAKE_TAG('K', 'O', 'R', ' ')
+
+struct _Script_Lang
+{
+ FT_Tag script;
+ FT_Tag language;
+};
+
+static const struct _Script_Lang Script_Lang[] = {
+ { SCRIPT_kana, LANGUAGE_JAN },
+ { SCRIPT_hani, LANGUAGE_CHN },
+ { SCRIPT_hang, LANGUAGE_KOR }
+};
+#define num_Script_Lang (sizeof(Script_Lang) / sizeof(Script_Lang[0]))
+
+typedef struct {
+ FT_UShort req;
+ FT_UShort count;
+ FT_UShort *list;
+} LangSys_Item;
+
+typedef struct {
+ FT_Tag tag;
+ FT_ULong ptr;
+ LangSys_Item *entry;
+} LangSys_Record;
+
+typedef struct {
+ FT_ULong ptr;
+ LangSys_Item *entry;
+ FT_UShort count;
+ LangSys_Record *list;
+} Script_Item;
+
+typedef struct {
+ FT_Tag tag, ltag;
+ FT_ULong ptr;
+ Script_Item *entry;
+} Script_Record;
+
+Script_Record *Script_List;
+FT_UShort Script_Count;
+
+static inline void
+fetch_LangSys (FT_ULong ptr, LangSys_Item **entry)
+{
+ LangSys_Item * item;
+ FT_UShort val;
+ int i;
+
+ *entry = item = mycalloc (1, sizeof(LangSys_Item));
+ GSUB_ptr = ptr;
+
+ /*
+ * Read LangSys Item
+ */
+ need(6);
+ val = get_UShort();
+ if (val)
+ oops("LangSys at 0x%04x: bad LookupOrder 0x%04x.", ptr, val);
+ item->req = get_UShort();
+ if (item->req != 0xffff && item->req >= Feature_Count)
+ oops("LangSys at 0x%04x: bad required Feature Index=%d.", ptr, item->req);
+ item->count = get_UShort();
+ item->list = mycalloc (item->count, sizeof(FT_UShort));
+
+ need(2 * item->count);
+ for (i = 0; i < item->count; i++) {
+ item->list[i] = get_UShort();
+ if (item->list[i] >= Feature_Count)
+ oops("LangSys at 0x%04x: bad Feature Index[%d]=%d.", ptr, i, item->list[i]);
+ }
+
+ if (item->req != 0xffff)
+ fetch_Feature (item->req);
+ for (i = 0; i < item->count; i++)
+ fetch_Feature (item->list[i]);
+}
+
+static inline void
+fetch_Script (int i)
+{
+ FT_ULong Script_ptr = Script_List[i].ptr;
+
+ if (Script_ptr)
+ {
+ Script_Item *entry = Script_List[i].entry = mycalloc (1, sizeof(Script_Item));
+ int j;
+
+#ifdef DEBUG
+ warning("Script[%d] '%c%c%c%c' at 0x%04x.", i, print_Tag(Script_List[i].tag), Script_ptr);
+#endif
+ GSUB_ptr = Script_ptr;
+
+ /*
+ * Read Script Item
+ */
+ need(4);
+ if ((entry->ptr = get_UShort()))
+ entry->ptr += Script_ptr;
+ entry->count = get_UShort();
+ entry->list = mycalloc (entry->count, sizeof(LangSys_Record));
+
+ need(6 * entry->count);
+ for (j = 0; j < entry->count; j++) {
+ FT_Tag tag = Script_List[i].tag;
+ FT_ULong ptr = Script_ptr + get_UShort();
+
+ entry->list[j].tag = tag;
+ if (tag == Script_List[i].ltag)
+ entry->list[j].ptr = ptr;
+ }
+
+ /*
+ * Read Default LangSys entriy
+ */
+ if (entry->ptr) {
+#ifdef DEBUG
+ warning("Script[%d] Default LangSys at 0x%04x.", i, entry->ptr);
+#endif
+ fetch_LangSys (entry->ptr, &entry->entry);
+ }
+
+ /*
+ * Read language LangSys entries
+ */
+ for (j = 0; j < entry->count; j++)
+ if (entry->list[j].ptr) {
+#ifdef DEBUG
+ warning("Script[%d] LangSys[%d] '%c%c%c%c' at 0x%04x.", i, j,
+ print_Tag(entry->list[j].tag), entry->list[j].ptr);
+#endif
+ fetch_LangSys (entry->list[j].ptr, &entry->list[j].entry);
+ }
+ }
+}
+
+#define TTAG_GSUB FT_MAKE_TAG('G', 'S', 'U', 'B')
+
+static inline void
+fetch_GSUB (void)
+{
+ FT_Error error;
+ int i, j;
+
+ FT_ULong Script_List_ptr, Feature_List_ptr, Lookup_List_ptr;
+
+ /*
+ * Fetch GSUB table
+ */
+ if ((error = FT_Load_Sfnt_Table(face, TTAG_GSUB, 0, NULL, &GSUB_length)))
+ {
+#ifdef DEBUG
+ warning("No GSUB data available for vertical glyph presentation forms.");
+#endif
+ return;
+ }
+ GSUB_table = mymalloc(GSUB_length);
+ if ((error = FT_Load_Sfnt_Table(face, TTAG_GSUB, 0, GSUB_table, &GSUB_length)))
+ {
+ warning("Cannot load GSUB table (error code = 0x%x).", error);
+ return;
+ }
+
+ /*
+ * Read GSUB header
+ */
+ need(10);
+ if (get_ULong() != 0x00010000)
+ oops("GSUB: Bad version.");
+ Script_List_ptr = get_UShort();
+ Feature_List_ptr = get_UShort();
+ Lookup_List_ptr = get_UShort();
+
+ /*
+ * Read Script_List
+ */
+ GSUB_ptr = Script_List_ptr;
+ need(2);
+ Script_Count = get_UShort();
+#ifdef DEBUG
+ warning("GSUB: Script List with %d entries at 0x%04x.", Script_Count, Script_List_ptr);
+#endif
+ Script_List = mycalloc (Script_Count, sizeof(Script_Record));
+
+ need (6 * Script_Count);
+ for (i = 0; i < Script_Count; i++)
+ {
+ FT_Tag tag = get_ULong();
+ FT_ULong ptr = Script_List_ptr + get_UShort();
+ for (j = 0; j < num_Script_Lang; j++)
+ if (tag == Script_Lang[j].script)
+ {
+ Script_List[i].tag = tag;
+ Script_List[i].ltag = Script_Lang[j].language;
+ Script_List[i].ptr = ptr;
+ }
+ }
+
+ /*
+ * Read Feature_List
+ */
+ GSUB_ptr = Feature_List_ptr;
+ need(2);
+ Feature_Count = get_UShort();
+#ifdef DEBUG
+ warning("GSUB: Feature List with %d entries at 0x%04x.", Feature_Count, Feature_List_ptr);
+#endif
+ Feature_List = mycalloc (Feature_Count, sizeof(Feature_Record));
+
+ need (6 * Feature_Count);
+ for (i = 0; i < Feature_Count; i++)
+ {
+ FT_Tag tag = get_ULong();
+ FT_ULong ptr = Feature_List_ptr + get_UShort();
+ if (tag == FEATURE_vert || tag == FEATURE_vrt2)
+ {
+ Feature_List[i].tag = tag;
+ Feature_List[i].ptr = ptr;
+ }
+ }
+
+ /*
+ * Read Lookup_List
+ */
+ GSUB_ptr = Lookup_List_ptr;
+ need(2);
+ Lookup_Count = get_UShort();
+#ifdef DEBUG
+ warning("GSUB: Lookup List with %d entries at 0x%04x.", Lookup_Count, Lookup_List_ptr);
+#endif
+ Lookup_List = mycalloc (Lookup_Count, sizeof(Lookup_Record));
+
+ need (2 * Lookup_Count);
+ for (i = 0; i < Lookup_Count; i++)
+ Lookup_List[i].ptr = Lookup_List_ptr + get_UShort();
+
+ /*
+ * Read Script_List entries
+ */
+ for (i = 0; i < Script_Count && !has_gsub; i++)
+ fetch_Script (i);
+}
+
+void
+FTopen (char *filename, Font *fnt, Boolean do_tfm, Boolean quiet)
+{
+ FT_Error error;
+ int i;
+ unsigned short num_cmap, cmap_plat=0, cmap_enc=0;
+
+ if ((error = FT_Init_FreeType(&engine)))
+ oops("Cannot initialize FreeType engine (error code = 0x%x).", error);
+
+ /*
+ * Load face.
+ */
+ if ((error = FT_New_Face(engine, filename, 0, &face)))
+ oops("Cannot open `%s'.", filename);
+
+ if (face->num_faces == 1)
+ {
+ if (fnt->fontindex != 0)
+ {
+ warning("This isn't a TrueType collection.\n"
+ "Parameter `%s' is ignored.", do_tfm ? "-f" : "Fontindex");
+ fnt->fontindex = 0;
+ }
+ fnt->fontindexparam = NULL;
+ }
+ else
+ {
+ if (fnt->fontindex != 0)
+ {
+ /*
+ * Now we try to open the proper font in a collection.
+ */
+ FT_Done_Face(face);
+ if ((error = FT_New_Face(engine, filename, (FT_Long)fnt->fontindex, &face)))
+ oops("Cannot open font %lu in TrueType Collection `%s'.",
+ fnt->fontindex, filename);
+ }
+ }
+
+ if (do_tfm)
+ {
+ /*
+ * Get the OS/2 table.
+ */
+ if ((os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2)) == NULL)
+ oops("Cannot find OS/2 table for `%s'.", filename);
+
+ /*
+ * Get the Postscript table.
+ */
+ if ((postscript = FT_Get_Sfnt_Table(face, ft_sfnt_post)) == NULL)
+ oops("Cannot find Postscript table for `%s'.", filename);
+ }
+
+ if ((error = FT_Set_Char_Size(face, ptsize * 64, ptsize * 64, dpi, dpi)))
+ oops("Cannot set character size (error code = 0x%x).", error);
+
+ matrix1.xx = (FT_Fixed)(floor(fnt->efactor * 1024) * (1<<16)/1024);
+ matrix1.xy = (FT_Fixed)(floor(fnt->slant * 1024) * (1<<16)/1024);
+ matrix1.yx = (FT_Fixed)0;
+ matrix1.yy = (FT_Fixed)(1<<16);
+
+ if (fnt->rotate)
+ {
+ matrix2.xx = 0;
+ matrix2.yx = 1L << 16;
+ matrix2.xy = -matrix2.yx;
+ matrix2.yy = matrix2.xx;
+ }
+
+ if (do_tfm)
+ {
+ fnt->units_per_em = face->units_per_EM;
+ fnt->fixedpitch = postscript->isFixedPitch;
+ fnt->italicangle = postscript->italicAngle / 65536.0;
+ fnt->xheight = os2->sxHeight * 1000 / fnt->units_per_em;
+ }
+
+ if (fnt->PSnames != Only)
+ {
+ num_cmap = face->num_charmaps;
+ for (i = 0; i < num_cmap; i++)
+ {
+ cmap_plat=face->charmaps[i]->platform_id;
+ cmap_enc=face->charmaps[i]->encoding_id;
+ if (cmap_plat == fnt->pid && cmap_enc == fnt->eid)
+ break;
+ }
+ if (i == num_cmap)
+ {
+ fprintf(stderr, "%s: ERROR: Invalid platform and/or encoding ID.\n",
+ progname);
+ if (num_cmap == 1)
+ fprintf(stderr, " The only valid PID/EID pair is");
+ else
+ fprintf(stderr, " Valid PID/EID pairs are:\n");
+ for (i = 0; i < num_cmap; i++)
+ {
+ cmap_plat=face->charmaps[i]->platform_id;
+ cmap_enc=face->charmaps[i]->encoding_id;
+ fprintf(stderr, " (%i,%i)\n", cmap_plat, cmap_enc);
+ }
+ fprintf(stderr, "\n");
+ exit(1);
+ }
+
+ if ((error = FT_Set_Charmap(face, face->charmaps[i])))
+ oops("Cannot load cmap (error code = 0x%x).", error);
+ }
+
+ if (fnt->PSnames)
+ {
+ if (!FT_HAS_GLYPH_NAMES(face))
+ oops("This font does not support PS names.");
+ }
+ else if (cmap_plat == Microsoft_platform &&
+ cmap_enc == Microsoft_Unicode_encoding)
+ set_encoding_scheme(encUnicode, fnt);
+ else if (cmap_plat == Macintosh_platform &&
+ cmap_enc == Macintosh_encoding)
+ set_encoding_scheme(encMac, fnt);
+ else
+ set_encoding_scheme(encFontSpecific, fnt);
+
+ if (fnt->rotate)
+ fetch_GSUB();
+}
+
+static inline int
+find_ndx (int Num, Coverage_Item *coverage)
+{
+ int i;
+
+ switch (coverage->format)
+ {
+ case 1:
+ for (i = 0; i < coverage->count; i++)
+ {
+ FT_UShort glyph = coverage->data.glyphs[i];
+ if (Num < glyph)
+ break;
+ else if (Num == glyph)
+ return i;
+ }
+ break;
+ case 2:
+ for (i = 0; i < coverage->count; i++)
+ {
+ Range_Record *range = &coverage->data.ranges[i];
+
+ if (Num < range->start)
+ break;
+ else if (Num <= range->end)
+ return (Num - range->start) + range->start_Index;
+ }
+ break;
+ default:
+ oops("Internal error: Invalid Coverage Format=%d.", coverage->format);
+ }
+ return -1;
+}
+
+int
+Get_Vert (int Num)
+{
+ Subst_Item *entry;
+
+#ifdef DEBUG
+ warning("GSUB: Looking for vertical form of glyph %d.", Num);
+#endif
+ for (entry = Subst_list; entry; entry = entry->next)
+ {
+ Single_Item *item = entry->item;
+ int ndx = find_ndx (Num, item->coverage);
+
+ if (ndx >= 0)
+ {
+#ifdef DEBUG
+ warning("Covered at position %d.", ndx);
+#endif
+ switch (item->format)
+ {
+ case 1:
+ Num += *item->data.delta;
+ break;
+ case 2:
+ Num = item->data.array->glyphs[ndx];
+ break;
+ default:
+ oops("Internal error: Invalid Single Format=%d.", item->format);
+ }
+#ifdef DEBUG
+ warning("Substituted by glyph %d.", Num);
+#endif
+ }
+ }
+ return Num;
+}