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Diffstat (limited to 'libXfont/src/bitmap/snfread.c')
-rw-r--r--libXfont/src/bitmap/snfread.c514
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diff --git a/libXfont/src/bitmap/snfread.c b/libXfont/src/bitmap/snfread.c
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index 000000000..f48e2d8a7
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+++ b/libXfont/src/bitmap/snfread.c
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+/* $Xorg: snfread.c,v 1.5 2001/02/09 02:04:02 xorgcvs Exp $ */
+/************************************************************************
+Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+************************************************************************/
+
+/*
+
+Copyright 1994, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+/* $XFree86: xc/lib/font/bitmap/snfread.c,v 1.12 2003/11/17 22:20:22 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifndef FONTMODULE
+#include <ctype.h>
+#endif
+
+#include <X11/fonts/fntfilst.h>
+#include <X11/fonts/bitmap.h>
+#include "snfstr.h"
+
+#include <stdarg.h>
+
+static void
+snfError(const char* message, ...)
+{
+ va_list args;
+
+ va_start(args, message);
+
+ fprintf(stderr, "SNF Error: ");
+ vfprintf(stderr, message, args);
+ va_end(args);
+}
+
+static void snfUnloadFont(FontPtr pFont);
+
+static int
+snfReadCharInfo(FontFilePtr file, CharInfoPtr charInfo, char *base)
+{
+ snfCharInfoRec snfCharInfo;
+
+#define Width(m) ((m).rightSideBearing - (m).leftSideBearing)
+#define Height(m) ((m).ascent + (m).descent)
+
+ if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) !=
+ sizeof(snfCharInfo)) {
+ return BadFontName;
+ }
+ charInfo->metrics = snfCharInfo.metrics;
+ if (snfCharInfo.exists)
+ charInfo->bits = base + snfCharInfo.byteOffset;
+ else
+ charInfo->bits = 0;
+ return Successful;
+}
+
+static int
+snfReadxCharInfo(FontFilePtr file, xCharInfo *charInfo)
+{
+ snfCharInfoRec snfCharInfo;
+
+ if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) !=
+ sizeof(snfCharInfo)) {
+ return BadFontName;
+ }
+ *charInfo = snfCharInfo.metrics;
+ return Successful;
+}
+
+static void
+snfCopyInfo(snfFontInfoPtr snfInfo, FontInfoPtr pFontInfo)
+{
+ pFontInfo->firstCol = snfInfo->firstCol;
+ pFontInfo->lastCol = snfInfo->lastCol;
+ pFontInfo->firstRow = snfInfo->firstRow;
+ pFontInfo->lastRow = snfInfo->lastRow;
+ pFontInfo->defaultCh = snfInfo->chDefault;
+ pFontInfo->noOverlap = snfInfo->noOverlap;
+ pFontInfo->terminalFont = snfInfo->terminalFont;
+ pFontInfo->constantMetrics = snfInfo->constantMetrics;
+ pFontInfo->constantWidth = snfInfo->constantWidth;
+ pFontInfo->inkInside = snfInfo->inkInside;
+ pFontInfo->inkMetrics = snfInfo->inkMetrics;
+ pFontInfo->allExist = snfInfo->allExist;
+ pFontInfo->drawDirection = snfInfo->drawDirection;
+ pFontInfo->anamorphic = FALSE;
+ pFontInfo->cachable = TRUE;
+ pFontInfo->maxOverlap = 0;
+ pFontInfo->minbounds = snfInfo->minbounds.metrics;
+ pFontInfo->maxbounds = snfInfo->maxbounds.metrics;
+ pFontInfo->fontAscent = snfInfo->fontAscent;
+ pFontInfo->fontDescent = snfInfo->fontDescent;
+ pFontInfo->nprops = snfInfo->nProps;
+}
+
+static int
+snfReadProps(snfFontInfoPtr snfInfo, FontInfoPtr pFontInfo, FontFilePtr file)
+{
+ char *strings;
+ FontPropPtr pfp;
+ snfFontPropPtr psnfp;
+ char *propspace;
+ int bytestoalloc;
+ int i;
+
+ bytestoalloc = snfInfo->nProps * sizeof(snfFontPropRec) +
+ BYTESOFSTRINGINFO(snfInfo);
+ propspace = (char *) xalloc(bytestoalloc);
+ if (!propspace) {
+ snfError("snfReadProps(): Couldn't allocate propspace (%d)\n", bytestoalloc);
+ return AllocError;
+ }
+
+ if (FontFileRead(file, propspace, bytestoalloc) != bytestoalloc) {
+ xfree(propspace);
+ return BadFontName;
+ }
+ psnfp = (snfFontPropPtr) propspace;
+
+ strings = propspace + BYTESOFPROPINFO(snfInfo);
+
+ for (i = 0, pfp = pFontInfo->props; i < snfInfo->nProps; i++, pfp++, psnfp++) {
+ pfp->name = MakeAtom(&strings[psnfp->name],
+ (unsigned) strlen(&strings[psnfp->name]), 1);
+ pFontInfo->isStringProp[i] = psnfp->indirect;
+ if (psnfp->indirect)
+ pfp->value = (INT32) MakeAtom(&strings[psnfp->value],
+ (unsigned) strlen(&strings[psnfp->value]), 1);
+ else
+ pfp->value = psnfp->value;
+ }
+
+ xfree(propspace);
+ return Successful;
+}
+
+static int
+snfReadHeader(snfFontInfoPtr snfInfo, FontFilePtr file)
+{
+ if (FontFileRead(file, (char *) snfInfo, sizeof *snfInfo) != sizeof *snfInfo)
+ return BadFontName;
+
+ if (snfInfo->version1 != FONT_FILE_VERSION ||
+ snfInfo->version2 != FONT_FILE_VERSION)
+ return BadFontName;
+ return Successful;
+}
+
+static int snf_set;
+static int snf_bit, snf_byte, snf_glyph, snf_scan;
+
+void
+SnfSetFormat (int bit, int byte, int glyph, int scan)
+{
+ snf_bit = bit;
+ snf_byte = byte;
+ snf_glyph = glyph;
+ snf_scan = scan;
+ snf_set = 1;
+}
+
+static void
+SnfGetFormat (int *bit, int *byte, int *glyph, int *scan)
+{
+ if (!snf_set)
+ FontDefaultFormat (&snf_bit, &snf_byte, &snf_glyph, &snf_scan);
+ *bit = snf_bit;
+ *byte = snf_byte;
+ *glyph = snf_glyph;
+ *scan = snf_scan;
+}
+
+int
+snfReadFont(FontPtr pFont, FontFilePtr file,
+ int bit, int byte, int glyph, int scan)
+{
+ snfFontInfoRec fi;
+ unsigned bytestoalloc;
+ int i, j;
+ char *fontspace;
+ BitmapFontPtr bitmapFont;
+ int num_chars;
+ int bitmapsSize;
+ int ret;
+ int metrics_off;
+ int encoding_off;
+ int props_off;
+ int isStringProp_off;
+ int ink_off;
+ char *bitmaps;
+ int def_bit, def_byte, def_glyph, def_scan;
+
+ ret = snfReadHeader(&fi, file);
+ if (ret != Successful)
+ return ret;
+
+ SnfGetFormat (&def_bit, &def_byte, &def_glyph, &def_scan);
+
+ /*
+ * we'll allocate one chunk of memory and split it among the various parts
+ * of the font:
+ *
+ * BitmapFontRec CharInfoRec's Glyphs Encoding DIX Properties Ink CharInfoRec's
+ *
+ * If the glyphpad is not the same as the font file, then the glyphs
+ * are allocated separately, to be later realloc'ed when we know
+ * how big to make them.
+ */
+
+ bitmapsSize = BYTESOFGLYPHINFO(&fi);
+ num_chars = n2dChars(&fi);
+ bytestoalloc = sizeof(BitmapFontRec); /* bitmapFont */
+ metrics_off = bytestoalloc;
+ bytestoalloc += num_chars * sizeof(CharInfoRec); /* metrics */
+ encoding_off = bytestoalloc;
+ bytestoalloc += NUM_SEGMENTS(num_chars) * sizeof(CharInfoPtr**);
+ /* encoding */
+ props_off = bytestoalloc;
+ bytestoalloc += fi.nProps * sizeof(FontPropRec); /* props */
+ isStringProp_off = bytestoalloc;
+ bytestoalloc += fi.nProps * sizeof(char); /* isStringProp */
+ bytestoalloc = (bytestoalloc + 3) & ~3;
+ ink_off = bytestoalloc;
+ if (fi.inkMetrics)
+ bytestoalloc += num_chars * sizeof(xCharInfo); /* ink_metrics */
+
+ fontspace = (char *) xalloc(bytestoalloc);
+ if (!fontspace) {
+ snfError("snfReadFont(): Couldn't allocate fontspace (%d)\n", bytestoalloc);
+ return AllocError;
+ }
+ bitmaps = (char *) xalloc (bitmapsSize);
+ if (!bitmaps)
+ {
+ snfError("snfReadFont(): Couldn't allocate bitmaps (%d)\n", bitmapsSize);
+ xfree (fontspace);
+ return AllocError;
+ }
+ /*
+ * now fix up pointers
+ */
+
+ bitmapFont = (BitmapFontPtr) fontspace;
+ bitmapFont->num_chars = num_chars;
+ bitmapFont->metrics = (CharInfoPtr) (fontspace + metrics_off);
+ bitmapFont->encoding = (CharInfoPtr **) (fontspace + encoding_off);
+ bitmapFont->bitmaps = bitmaps;
+ bitmapFont->pDefault = NULL;
+ bitmapFont->bitmapExtra = NULL;
+ pFont->info.props = (FontPropPtr) (fontspace + props_off);
+ pFont->info.isStringProp = (char *) (fontspace + isStringProp_off);
+ if (fi.inkMetrics)
+ bitmapFont->ink_metrics = (xCharInfo *) (fontspace + ink_off);
+ else
+ bitmapFont->ink_metrics = 0;
+
+ /*
+ * read the CharInfo
+ */
+
+ ret = Successful;
+ memset(bitmapFont->encoding, 0,
+ NUM_SEGMENTS(num_chars)*sizeof(CharInfoPtr*));
+ for (i = 0; ret == Successful && i < num_chars; i++) {
+ ret = snfReadCharInfo(file, &bitmapFont->metrics[i], bitmaps);
+ if (bitmapFont->metrics[i].bits) {
+ if (!bitmapFont->encoding[SEGMENT_MAJOR(i)]) {
+ bitmapFont->encoding[SEGMENT_MAJOR(i)]=
+ (CharInfoPtr*)xcalloc(BITMAP_FONT_SEGMENT_SIZE,
+ sizeof(CharInfoPtr));
+ if (!bitmapFont->encoding[SEGMENT_MAJOR(i)]) {
+ ret = AllocError;
+ break;
+ }
+ }
+ ACCESSENCODINGL(bitmapFont->encoding,i) = &bitmapFont->metrics[i];
+ }
+ }
+
+ if (ret != Successful) {
+ xfree(bitmaps);
+ if(bitmapFont->encoding) {
+ for(j=0; j<SEGMENT_MAJOR(i); j++)
+ xfree(bitmapFont->encoding[i]);
+ }
+ xfree(fontspace);
+ return ret;
+ }
+ /*
+ * read the glyphs
+ */
+
+ if (FontFileRead(file, bitmaps, bitmapsSize) != bitmapsSize) {
+ xfree(bitmaps);
+ xfree(fontspace);
+ return BadFontName;
+ }
+
+ if (def_bit != bit)
+ BitOrderInvert((unsigned char *)bitmaps, bitmapsSize);
+ if ((def_byte == def_bit) != (bit == byte)) {
+ switch (bit == byte ? def_scan : scan) {
+ case 1:
+ break;
+ case 2:
+ TwoByteSwap((unsigned char *)bitmaps, bitmapsSize);
+ break;
+ case 4:
+ FourByteSwap((unsigned char *)bitmaps, bitmapsSize);
+ break;
+ }
+ }
+ if (def_glyph != glyph) {
+ char *padbitmaps;
+ int sizepadbitmaps;
+ int sizechar;
+ CharInfoPtr metric;
+
+ sizepadbitmaps = 0;
+ metric = bitmapFont->metrics;
+ for (i = 0; i < num_chars; i++)
+ {
+ if (metric->bits)
+ sizepadbitmaps += BYTES_FOR_GLYPH(metric,glyph);
+ metric++;
+ }
+ padbitmaps = (char *) xalloc(sizepadbitmaps);
+ if (!padbitmaps) {
+ snfError("snfReadFont(): Couldn't allocate padbitmaps (%d)\n", sizepadbitmaps);
+ xfree (bitmaps);
+ xfree (fontspace);
+ return AllocError;
+ }
+ metric = bitmapFont->metrics;
+ bitmapFont->bitmaps = padbitmaps;
+ for (i = 0; i < num_chars; i++) {
+ sizechar = RepadBitmap(metric->bits, padbitmaps,
+ def_glyph, glyph,
+ metric->metrics.rightSideBearing -
+ metric->metrics.leftSideBearing,
+ metric->metrics.ascent + metric->metrics.descent);
+ metric->bits = padbitmaps;
+ padbitmaps += sizechar;
+ metric++;
+ }
+ xfree(bitmaps);
+ }
+
+ /* now read and atom'ize properties */
+
+ ret = snfReadProps(&fi, &pFont->info, file);
+ if (ret != Successful) {
+ xfree(fontspace);
+ return ret;
+ }
+ snfCopyInfo(&fi, &pFont->info);
+
+ /* finally, read the ink metrics if the exist */
+
+ if (fi.inkMetrics) {
+ ret = Successful;
+ ret = snfReadxCharInfo(file, &pFont->info.ink_minbounds);
+ ret = snfReadxCharInfo(file, &pFont->info.ink_maxbounds);
+ for (i = 0; ret == Successful && i < num_chars; i++)
+ ret = snfReadxCharInfo(file, &bitmapFont->ink_metrics[i]);
+ if (ret != Successful) {
+ xfree(fontspace);
+ return ret;
+ }
+ } else {
+ pFont->info.ink_minbounds = pFont->info.minbounds;
+ pFont->info.ink_maxbounds = pFont->info.maxbounds;
+ }
+
+ if (pFont->info.defaultCh != (unsigned short) NO_SUCH_CHAR) {
+ unsigned int r,
+ c,
+ cols;
+
+ r = pFont->info.defaultCh >> 8;
+ c = pFont->info.defaultCh & 0xFF;
+ if (pFont->info.firstRow <= r && r <= pFont->info.lastRow &&
+ pFont->info.firstCol <= c && c <= pFont->info.lastCol) {
+ cols = pFont->info.lastCol - pFont->info.firstCol + 1;
+ r = r - pFont->info.firstRow;
+ c = c - pFont->info.firstCol;
+ bitmapFont->pDefault = &bitmapFont->metrics[r * cols + c];
+ }
+ }
+ bitmapFont->bitmapExtra = (BitmapExtraPtr) 0;
+ pFont->fontPrivate = (pointer) bitmapFont;
+ pFont->get_glyphs = bitmapGetGlyphs;
+ pFont->get_metrics = bitmapGetMetrics;
+ pFont->unload_font = snfUnloadFont;
+ pFont->unload_glyphs = NULL;
+ pFont->bit = bit;
+ pFont->byte = byte;
+ pFont->glyph = glyph;
+ pFont->scan = scan;
+ return Successful;
+}
+
+int
+snfReadFontInfo(FontInfoPtr pFontInfo, FontFilePtr file)
+{
+ int ret;
+ snfFontInfoRec fi;
+ int bytestoskip;
+ int num_chars;
+
+ ret = snfReadHeader(&fi, file);
+ if (ret != Successful)
+ return ret;
+ snfCopyInfo(&fi, pFontInfo);
+
+ pFontInfo->props = (FontPropPtr) xalloc(fi.nProps * sizeof(FontPropRec));
+ if (!pFontInfo->props) {
+ snfError("snfReadFontInfo(): Couldn't allocate props (%d*%d)\n", fi.nProps, sizeof(FontPropRec));
+ return AllocError;
+ }
+ pFontInfo->isStringProp = (char *) xalloc(fi.nProps * sizeof(char));
+ if (!pFontInfo->isStringProp) {
+ snfError("snfReadFontInfo(): Couldn't allocate isStringProp (%d*%d)\n", fi.nProps, sizeof(char));
+ xfree(pFontInfo->props);
+ return AllocError;
+ }
+ num_chars = n2dChars(&fi);
+ bytestoskip = num_chars * sizeof(snfCharInfoRec); /* charinfos */
+ bytestoskip += BYTESOFGLYPHINFO(&fi);
+ (void)FontFileSkip(file, bytestoskip);
+
+ ret = snfReadProps(&fi, pFontInfo, file);
+ if (ret != Successful) {
+ xfree(pFontInfo->props);
+ xfree(pFontInfo->isStringProp);
+ return ret;
+ }
+ if (fi.inkMetrics) {
+ ret = snfReadxCharInfo(file, &pFontInfo->ink_minbounds);
+ if (ret != Successful) {
+ xfree(pFontInfo->props);
+ xfree(pFontInfo->isStringProp);
+ return ret;
+ }
+ ret = snfReadxCharInfo(file, &pFontInfo->ink_maxbounds);
+ if (ret != Successful) {
+ xfree(pFontInfo->props);
+ xfree(pFontInfo->isStringProp);
+ return ret;
+ }
+ } else {
+ pFontInfo->ink_minbounds = pFontInfo->minbounds;
+ pFontInfo->ink_maxbounds = pFontInfo->maxbounds;
+ }
+ return Successful;
+
+}
+
+static void
+snfUnloadFont(FontPtr pFont)
+{
+ BitmapFontPtr bitmapFont;
+
+ bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
+ xfree (bitmapFont->bitmaps);
+ xfree (bitmapFont);
+ DestroyFontRec (pFont);
+}
+
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