diff options
Diffstat (limited to 'libXfont/src/bitmap/pcfread.c')
| -rw-r--r-- | libXfont/src/bitmap/pcfread.c | 1024 |
1 files changed, 1024 insertions, 0 deletions
diff --git a/libXfont/src/bitmap/pcfread.c b/libXfont/src/bitmap/pcfread.c new file mode 100644 index 000000000..c5db2555b --- /dev/null +++ b/libXfont/src/bitmap/pcfread.c @@ -0,0 +1,1024 @@ +/* $Xorg: pcfread.c,v 1.5 2001/02/09 02:04:02 xorgcvs Exp $ */ +/* + +Copyright 1990, 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/pcfread.c,v 1.21 2003/11/17 22:20:22 dawes Exp $ */ + +/* + * Author: Keith Packard, MIT X Consortium + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <X11/fonts/fntfilst.h> +#include <X11/fonts/bitmap.h> +#include <X11/fonts/pcf.h> + +#ifndef MAX +#define MAX(a,b) (((a)>(b)) ? a : b) +#endif + +#include <stdarg.h> +#include <stdint.h> + +void +pcfError(const char* message, ...) +{ + va_list args; + + va_start(args, message); + + fprintf(stderr, "PCF Error: "); + vfprintf(stderr, message, args); + va_end(args); +} + +/* Read PCF font files */ + +static void pcfUnloadFont ( FontPtr pFont ); +static int position; + + +#define IS_EOF(file) ((file)->eof == BUFFILEEOF) + +#define FONT_FILE_GETC_ERR(f) (tmp = FontFileGetc(f), BAIL_ON_EOF) + +static int +pcfGetLSB32(FontFilePtr file) +{ + int c; + + c = FontFileGetc(file); + c |= FontFileGetc(file) << 8; + c |= FontFileGetc(file) << 16; + c |= FontFileGetc(file) << 24; + position += 4; + return c; +} + +static int +pcfGetINT32(FontFilePtr file, CARD32 format) +{ + int c; + + if (PCF_BYTE_ORDER(format) == MSBFirst) { + c = FontFileGetc(file) << 24; + c |= FontFileGetc(file) << 16; + c |= FontFileGetc(file) << 8; + c |= FontFileGetc(file); + } else { + c = FontFileGetc(file); + c |= FontFileGetc(file) << 8; + c |= FontFileGetc(file) << 16; + c |= FontFileGetc(file) << 24; + } + position += 4; + return c; +} + +static int +pcfGetINT16(FontFilePtr file, CARD32 format) +{ + int c; + + if (PCF_BYTE_ORDER(format) == MSBFirst) { + c = FontFileGetc(file) << 8; + c |= FontFileGetc(file); + } else { + c = FontFileGetc(file); + c |= FontFileGetc(file) << 8; + } + position += 2; + return c; +} + +#define pcfGetINT8(file, format) (position++, FontFileGetc(file)) + +static PCFTablePtr +pcfReadTOC(FontFilePtr file, int *countp) +{ + CARD32 version; + PCFTablePtr tables; + int count; + int i; + + position = 0; + version = pcfGetLSB32(file); + if (version != PCF_FILE_VERSION) + return (PCFTablePtr) NULL; + count = pcfGetLSB32(file); + if (IS_EOF(file)) return (PCFTablePtr) NULL; + if (count < 0 || count > INT32_MAX / sizeof(PCFTableRec)) { + pcfError("pcfReadTOC(): invalid file format\n"); + return NULL; + } + tables = (PCFTablePtr) xalloc(count * sizeof(PCFTableRec)); + if (!tables) { + pcfError("pcfReadTOC(): Couldn't allocate tables (%d*%d)\n", count, sizeof(PCFTableRec)); + return (PCFTablePtr) NULL; + } + for (i = 0; i < count; i++) { + tables[i].type = pcfGetLSB32(file); + tables[i].format = pcfGetLSB32(file); + tables[i].size = pcfGetLSB32(file); + tables[i].offset = pcfGetLSB32(file); + if (IS_EOF(file)) goto Bail; + } + + *countp = count; + return tables; + + Bail: + xfree(tables); + return (PCFTablePtr) NULL; +} + +/* + * PCF supports two formats for metrics, both the regular + * jumbo size, and 'lite' metrics, which are useful + * for most fonts which have even vaguely reasonable + * metrics + */ + +static Bool +pcfGetMetric(FontFilePtr file, CARD32 format, xCharInfo *metric) +{ + metric->leftSideBearing = pcfGetINT16(file, format); + metric->rightSideBearing = pcfGetINT16(file, format); + metric->characterWidth = pcfGetINT16(file, format); + metric->ascent = pcfGetINT16(file, format); + metric->descent = pcfGetINT16(file, format); + metric->attributes = pcfGetINT16(file, format); + if (IS_EOF(file)) return FALSE; + + return TRUE; +} + +static Bool +pcfGetCompressedMetric(FontFilePtr file, CARD32 format, xCharInfo *metric) +{ + metric->leftSideBearing = pcfGetINT8(file, format) - 0x80; + metric->rightSideBearing = pcfGetINT8(file, format) - 0x80; + metric->characterWidth = pcfGetINT8(file, format) - 0x80; + metric->ascent = pcfGetINT8(file, format) - 0x80; + metric->descent = pcfGetINT8(file, format) - 0x80; + metric->attributes = 0; + if (IS_EOF(file)) return FALSE; + + return TRUE; +} + +/* + * Position the file to the begining of the specified table + * in the font file + */ +static Bool +pcfSeekToType(FontFilePtr file, PCFTablePtr tables, int ntables, + CARD32 type, CARD32 *formatp, CARD32 *sizep) +{ + int i; + + for (i = 0; i < ntables; i++) + if (tables[i].type == type) { + if (position > tables[i].offset) + return FALSE; + if (!FontFileSkip(file, tables[i].offset - position)) + return FALSE; + position = tables[i].offset; + *sizep = tables[i].size; + *formatp = tables[i].format; + return TRUE; + } + return FALSE; +} + +static Bool +pcfHasType (PCFTablePtr tables, int ntables, CARD32 type) +{ + int i; + + for (i = 0; i < ntables; i++) + if (tables[i].type == type) + return TRUE; + return FALSE; +} + +/* + * pcfGetProperties + * + * Reads the font properties from the font file, filling in the FontInfo rec + * supplied. Used by by both ReadFont and ReadFontInfo routines. + */ + +static Bool +pcfGetProperties(FontInfoPtr pFontInfo, FontFilePtr file, + PCFTablePtr tables, int ntables) +{ + FontPropPtr props = 0; + int nprops; + char *isStringProp = 0; + CARD32 format; + int i; + CARD32 size; + int string_size; + char *strings; + + /* font properties */ + + if (!pcfSeekToType(file, tables, ntables, PCF_PROPERTIES, &format, &size)) + goto Bail; + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + goto Bail; + nprops = pcfGetINT32(file, format); + if (nprops <= 0 || nprops > INT32_MAX / sizeof(FontPropRec)) { + pcfError("pcfGetProperties(): invalid nprops value (%d)\n", nprops); + goto Bail; + } + if (IS_EOF(file)) goto Bail; + props = (FontPropPtr) xalloc(nprops * sizeof(FontPropRec)); + if (!props) { + pcfError("pcfGetProperties(): Couldn't allocate props (%d*%d)\n", nprops, sizeof(FontPropRec)); + goto Bail; + } + isStringProp = (char *) xalloc(nprops * sizeof(char)); + if (!isStringProp) { + pcfError("pcfGetProperties(): Couldn't allocate isStringProp (%d*%d)\n", nprops, sizeof(char)); + goto Bail; + } + for (i = 0; i < nprops; i++) { + props[i].name = pcfGetINT32(file, format); + isStringProp[i] = pcfGetINT8(file, format); + props[i].value = pcfGetINT32(file, format); + if (props[i].name < 0 + || (isStringProp[i] != 0 && isStringProp[i] != 1) + || (isStringProp[i] && props[i].value < 0)) { + pcfError("pcfGetProperties(): invalid file format %d %d %d\n", + props[i].name, isStringProp[i], props[i].value); + goto Bail; + } + if (IS_EOF(file)) goto Bail; + } + /* pad the property array */ + /* + * clever here - nprops is the same as the number of odd-units read, as + * only isStringProp are odd length + */ + if (nprops & 3) + { + i = 4 - (nprops & 3); + (void)FontFileSkip(file, i); + position += i; + } + if (IS_EOF(file)) goto Bail; + string_size = pcfGetINT32(file, format); + if (string_size < 0) goto Bail; + if (IS_EOF(file)) goto Bail; + strings = (char *) xalloc(string_size); + if (!strings) { + pcfError("pcfGetProperties(): Couldn't allocate strings (%d)\n", string_size); + goto Bail; + } + FontFileRead(file, strings, string_size); + if (IS_EOF(file)) goto Bail; + position += string_size; + for (i = 0; i < nprops; i++) { + props[i].name = MakeAtom(strings + props[i].name, + strlen(strings + props[i].name), TRUE); + if (isStringProp[i]) { + props[i].value = MakeAtom(strings + props[i].value, + strlen(strings + props[i].value), TRUE); + } + } + xfree(strings); + pFontInfo->isStringProp = isStringProp; + pFontInfo->props = props; + pFontInfo->nprops = nprops; + return TRUE; +Bail: + xfree(isStringProp); + xfree(props); + return FALSE; +} + + +/* + * pcfReadAccel + * + * Fill in the accelerator information from the font file; used + * to read both BDF_ACCELERATORS and old style ACCELERATORS + */ + +static Bool +pcfGetAccel(FontInfoPtr pFontInfo, FontFilePtr file, + PCFTablePtr tables, int ntables, CARD32 type) +{ + CARD32 format; + CARD32 size; + + if (!pcfSeekToType(file, tables, ntables, type, &format, &size) || + IS_EOF(file)) + goto Bail; + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT) && + !PCF_FORMAT_MATCH(format, PCF_ACCEL_W_INKBOUNDS)) + { + goto Bail; + } + pFontInfo->noOverlap = pcfGetINT8(file, format); + pFontInfo->constantMetrics = pcfGetINT8(file, format); + pFontInfo->terminalFont = pcfGetINT8(file, format); + pFontInfo->constantWidth = pcfGetINT8(file, format); + pFontInfo->inkInside = pcfGetINT8(file, format); + pFontInfo->inkMetrics = pcfGetINT8(file, format); + pFontInfo->drawDirection = pcfGetINT8(file, format); + pFontInfo->anamorphic = FALSE; + pFontInfo->cachable = TRUE; + /* natural alignment */ pcfGetINT8(file, format); + pFontInfo->fontAscent = pcfGetINT32(file, format); + pFontInfo->fontDescent = pcfGetINT32(file, format); + pFontInfo->maxOverlap = pcfGetINT32(file, format); + if (IS_EOF(file)) goto Bail; + if (!pcfGetMetric(file, format, &pFontInfo->minbounds)) + goto Bail; + if (!pcfGetMetric(file, format, &pFontInfo->maxbounds)) + goto Bail; + if (PCF_FORMAT_MATCH(format, PCF_ACCEL_W_INKBOUNDS)) { + if (!pcfGetMetric(file, format, &pFontInfo->ink_minbounds)) + goto Bail; + if (!pcfGetMetric(file, format, &pFontInfo->ink_maxbounds)) + goto Bail; + } else { + pFontInfo->ink_minbounds = pFontInfo->minbounds; + pFontInfo->ink_maxbounds = pFontInfo->maxbounds; + } + return TRUE; +Bail: + return FALSE; +} + +int +pcfReadFont(FontPtr pFont, FontFilePtr file, + int bit, int byte, int glyph, int scan) +{ + CARD32 format; + CARD32 size; + BitmapFontPtr bitmapFont = 0; + int i; + PCFTablePtr tables = 0; + int ntables; + int nmetrics; + int nbitmaps; + int sizebitmaps; + int nink_metrics; + CharInfoPtr metrics = 0; + xCharInfo *ink_metrics = 0; + char *bitmaps = 0; + CharInfoPtr **encoding = 0; + int nencoding = 0; + int encodingOffset; + CARD32 bitmapSizes[GLYPHPADOPTIONS]; + CARD32 *offsets = 0; + Bool hasBDFAccelerators; + + pFont->info.nprops = 0; + pFont->info.props = 0; + if (!(tables = pcfReadTOC(file, &ntables))) + goto Bail; + + /* properties */ + + if (!pcfGetProperties(&pFont->info, file, tables, ntables)) + goto Bail; + + /* Use the old accelerators if no BDF accelerators are in the file */ + + hasBDFAccelerators = pcfHasType (tables, ntables, PCF_BDF_ACCELERATORS); + if (!hasBDFAccelerators) + if (!pcfGetAccel (&pFont->info, file, tables, ntables, PCF_ACCELERATORS)) + goto Bail; + + /* metrics */ + + if (!pcfSeekToType(file, tables, ntables, PCF_METRICS, &format, &size)) { + goto Bail; + } + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT) && + !PCF_FORMAT_MATCH(format, PCF_COMPRESSED_METRICS)) { + goto Bail; + } + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + nmetrics = pcfGetINT32(file, format); + else + nmetrics = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (nmetrics < 0 || nmetrics > INT32_MAX / sizeof(CharInfoRec)) { + pcfError("pcfReadFont(): invalid file format\n"); + goto Bail; + } + metrics = (CharInfoPtr) xalloc(nmetrics * sizeof(CharInfoRec)); + if (!metrics) { + pcfError("pcfReadFont(): Couldn't allocate metrics (%d*%d)\n", nmetrics, sizeof(CharInfoRec)); + goto Bail; + } + for (i = 0; i < nmetrics; i++) + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) { + if (!pcfGetMetric(file, format, &(metrics + i)->metrics)) + goto Bail; + } else { + if (!pcfGetCompressedMetric(file, format, &(metrics + i)->metrics)) + goto Bail; + } + + /* bitmaps */ + + if (!pcfSeekToType(file, tables, ntables, PCF_BITMAPS, &format, &size)) + goto Bail; + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + goto Bail; + + nbitmaps = pcfGetINT32(file, format); + if (nbitmaps != nmetrics || IS_EOF(file)) + goto Bail; + /* nmetrics is already ok, so nbitmap also is */ + offsets = (CARD32 *) xalloc(nbitmaps * sizeof(CARD32)); + if (!offsets) { + pcfError("pcfReadFont(): Couldn't allocate offsets (%d*%d)\n", nbitmaps, sizeof(CARD32)); + goto Bail; + } + for (i = 0; i < nbitmaps; i++) { + offsets[i] = pcfGetINT32(file, format); + if (IS_EOF(file)) goto Bail; + } + + for (i = 0; i < GLYPHPADOPTIONS; i++) { + bitmapSizes[i] = pcfGetINT32(file, format); + if (IS_EOF(file)) goto Bail; + if (bitmapSizes[i] < 0) goto Bail; + } + + sizebitmaps = bitmapSizes[PCF_GLYPH_PAD_INDEX(format)]; + /* guard against completely empty font */ + bitmaps = xalloc(sizebitmaps ? sizebitmaps : 1); + if (!bitmaps) { + pcfError("pcfReadFont(): Couldn't allocate bitmaps (%d)\n", sizebitmaps ? sizebitmaps : 1); + goto Bail; + } + FontFileRead(file, bitmaps, sizebitmaps); + if (IS_EOF(file)) goto Bail; + position += sizebitmaps; + + if (PCF_BIT_ORDER(format) != bit) + BitOrderInvert((unsigned char *)bitmaps, sizebitmaps); + if ((PCF_BYTE_ORDER(format) == PCF_BIT_ORDER(format)) != (bit == byte)) { + switch (bit == byte ? PCF_SCAN_UNIT(format) : scan) { + case 1: + break; + case 2: + TwoByteSwap((unsigned char *)bitmaps, sizebitmaps); + break; + case 4: + FourByteSwap((unsigned char *)bitmaps, sizebitmaps); + break; + } + } + if (PCF_GLYPH_PAD(format) != glyph) { + char *padbitmaps; + int sizepadbitmaps; + int old, + new; + xCharInfo *metric; + + sizepadbitmaps = bitmapSizes[PCF_SIZE_TO_INDEX(glyph)]; + padbitmaps = (char *) xalloc(sizepadbitmaps); + if (!padbitmaps) { + pcfError("pcfReadFont(): Couldn't allocate padbitmaps (%d)\n", sizepadbitmaps); + goto Bail; + } + new = 0; + for (i = 0; i < nbitmaps; i++) { + old = offsets[i]; + metric = &metrics[i].metrics; + offsets[i] = new; + new += RepadBitmap(bitmaps + old, padbitmaps + new, + PCF_GLYPH_PAD(format), glyph, + metric->rightSideBearing - metric->leftSideBearing, + metric->ascent + metric->descent); + } + xfree(bitmaps); + bitmaps = padbitmaps; + } + for (i = 0; i < nbitmaps; i++) + metrics[i].bits = bitmaps + offsets[i]; + + xfree(offsets); + offsets = NULL; + + /* ink metrics ? */ + + ink_metrics = NULL; + if (pcfSeekToType(file, tables, ntables, PCF_INK_METRICS, &format, &size)) { + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT) && + !PCF_FORMAT_MATCH(format, PCF_COMPRESSED_METRICS)) { + goto Bail; + } + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + nink_metrics = pcfGetINT32(file, format); + else + nink_metrics = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (nink_metrics != nmetrics) + goto Bail; + /* nmetrics already checked */ + ink_metrics = (xCharInfo *) xalloc(nink_metrics * sizeof(xCharInfo)); + if (!ink_metrics) { + pcfError("pcfReadFont(): Couldn't allocate ink_metrics (%d*%d)\n", nink_metrics, sizeof(xCharInfo)); + goto Bail; + } + for (i = 0; i < nink_metrics; i++) + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) { + if (!pcfGetMetric(file, format, ink_metrics + i)) + goto Bail; + } else { + if (!pcfGetCompressedMetric(file, format, ink_metrics + i)) + goto Bail; + } + } + + /* encoding */ + + if (!pcfSeekToType(file, tables, ntables, PCF_BDF_ENCODINGS, &format, &size)) + goto Bail; + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + goto Bail; + + pFont->info.firstCol = pcfGetINT16(file, format); + pFont->info.lastCol = pcfGetINT16(file, format); + pFont->info.firstRow = pcfGetINT16(file, format); + pFont->info.lastRow = pcfGetINT16(file, format); + pFont->info.defaultCh = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (pFont->info.firstCol > pFont->info.lastCol || + pFont->info.firstRow > pFont->info.lastRow || + pFont->info.lastCol-pFont->info.firstCol > 255) goto Bail; + + nencoding = (pFont->info.lastCol - pFont->info.firstCol + 1) * + (pFont->info.lastRow - pFont->info.firstRow + 1); + + encoding = (CharInfoPtr **) xcalloc(NUM_SEGMENTS(nencoding), + sizeof(CharInfoPtr*)); + if (!encoding) { + pcfError("pcfReadFont(): Couldn't allocate encoding (%d*%d)\n", nencoding, sizeof(CharInfoPtr)); + goto Bail; + } + + pFont->info.allExist = TRUE; + for (i = 0; i < nencoding; i++) { + encodingOffset = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (encodingOffset == 0xFFFF) { + pFont->info.allExist = FALSE; + } else { + if(!encoding[SEGMENT_MAJOR(i)]) { + encoding[SEGMENT_MAJOR(i)]= + (CharInfoPtr*)xcalloc(BITMAP_FONT_SEGMENT_SIZE, + sizeof(CharInfoPtr)); + if(!encoding[SEGMENT_MAJOR(i)]) + goto Bail; + } + ACCESSENCODINGL(encoding, i) = metrics + encodingOffset; + } + } + + /* BDF style accelerators (i.e. bounds based on encoded glyphs) */ + + if (hasBDFAccelerators) + if (!pcfGetAccel (&pFont->info, file, tables, ntables, PCF_BDF_ACCELERATORS)) + goto Bail; + + bitmapFont = (BitmapFontPtr) xalloc(sizeof *bitmapFont); + if (!bitmapFont) { + pcfError("pcfReadFont(): Couldn't allocate bitmapFont (%d)\n", sizeof *bitmapFont); + goto Bail; + } + + bitmapFont->version_num = PCF_FILE_VERSION; + bitmapFont->num_chars = nmetrics; + bitmapFont->num_tables = ntables; + bitmapFont->metrics = metrics; + bitmapFont->ink_metrics = ink_metrics; + bitmapFont->bitmaps = bitmaps; + bitmapFont->encoding = encoding; + bitmapFont->pDefault = (CharInfoPtr) 0; + 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 = ACCESSENCODING(encoding, r * cols + c); + } + } + bitmapFont->bitmapExtra = (BitmapExtraPtr) 0; + pFont->fontPrivate = (pointer) bitmapFont; + pFont->get_glyphs = bitmapGetGlyphs; + pFont->get_metrics = bitmapGetMetrics; + pFont->unload_font = pcfUnloadFont; + pFont->unload_glyphs = NULL; + pFont->bit = bit; + pFont->byte = byte; + pFont->glyph = glyph; + pFont->scan = scan; + xfree(tables); + return Successful; +Bail: + xfree(ink_metrics); + if(encoding) { + for(i=0; i<NUM_SEGMENTS(nencoding); i++) + xfree(encoding[i]); + } + xfree(encoding); + xfree(bitmaps); + xfree(metrics); + xfree(pFont->info.props); + pFont->info.nprops = 0; + pFont->info.props = 0; + xfree (pFont->info.isStringProp); + xfree(bitmapFont); + xfree(tables); + xfree(offsets); + return AllocError; +} + +int +pcfReadFontInfo(FontInfoPtr pFontInfo, FontFilePtr file) +{ + PCFTablePtr tables; + int ntables; + CARD32 format; + CARD32 size; + int nencoding; + Bool hasBDFAccelerators; + + pFontInfo->isStringProp = NULL; + pFontInfo->props = NULL; + pFontInfo->nprops = 0; + + if (!(tables = pcfReadTOC(file, &ntables))) + goto Bail; + + /* properties */ + + if (!pcfGetProperties(pFontInfo, file, tables, ntables)) + goto Bail; + + /* Use the old accelerators if no BDF accelerators are in the file */ + + hasBDFAccelerators = pcfHasType (tables, ntables, PCF_BDF_ACCELERATORS); + if (!hasBDFAccelerators) + if (!pcfGetAccel (pFontInfo, file, tables, ntables, PCF_ACCELERATORS)) + goto Bail; + + /* encoding */ + + if (!pcfSeekToType(file, tables, ntables, PCF_BDF_ENCODINGS, &format, &size)) + goto Bail; + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + goto Bail; + + pFontInfo->firstCol = pcfGetINT16(file, format); + pFontInfo->lastCol = pcfGetINT16(file, format); + pFontInfo->firstRow = pcfGetINT16(file, format); + pFontInfo->lastRow = pcfGetINT16(file, format); + pFontInfo->defaultCh = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (pFontInfo->firstCol > pFontInfo->lastCol || + pFontInfo->firstRow > pFontInfo->lastRow || + pFontInfo->lastCol-pFontInfo->firstCol > 255) goto Bail; + + nencoding = (pFontInfo->lastCol - pFontInfo->firstCol + 1) * + (pFontInfo->lastRow - pFontInfo->firstRow + 1); + + pFontInfo->allExist = TRUE; + while (nencoding--) { + if (pcfGetINT16(file, format) == 0xFFFF) + pFontInfo->allExist = FALSE; + if (IS_EOF(file)) goto Bail; + } + if (IS_EOF(file)) goto Bail; + + /* BDF style accelerators (i.e. bounds based on encoded glyphs) */ + + if (hasBDFAccelerators) + if (!pcfGetAccel (pFontInfo, file, tables, ntables, PCF_BDF_ACCELERATORS)) + goto Bail; + + xfree(tables); + return Successful; +Bail: + pFontInfo->nprops = 0; + xfree (pFontInfo->props); + xfree (pFontInfo->isStringProp); + xfree(tables); + return AllocError; +} + +static void +pcfUnloadFont(FontPtr pFont) +{ + BitmapFontPtr bitmapFont; + int i,nencoding; + + bitmapFont = (BitmapFontPtr) pFont->fontPrivate; + xfree(bitmapFont->ink_metrics); + if(bitmapFont->encoding) { + nencoding = (pFont->info.lastCol - pFont->info.firstCol + 1) * + (pFont->info.lastRow - pFont->info.firstRow + 1); + for(i=0; i<NUM_SEGMENTS(nencoding); i++) + xfree(bitmapFont->encoding[i]); + } + xfree(bitmapFont->encoding); + xfree(bitmapFont->bitmaps); + xfree(bitmapFont->metrics); + xfree(pFont->info.isStringProp); + xfree(pFont->info.props); + xfree(bitmapFont); + DestroyFontRec(pFont); +} + +int +pmfReadFont(FontPtr pFont, FontFilePtr file, + int bit, int byte, int glyph, int scan) +{ + CARD32 format; + CARD32 size; + BitmapFontPtr bitmapFont = 0; + int i; + PCFTablePtr tables = 0; + int ntables; + int nmetrics; + int sizebitmaps; + int nink_metrics; + CharInfoPtr metrics = 0; + xCharInfo *ink_metrics = 0; + char *bitmaps = 0; + CharInfoPtr **encoding = 0; + int nencoding = 0; + int encodingOffset; + Bool hasBDFAccelerators; + CharInfoPtr pci; + + pFont->info.nprops = 0; + pFont->info.props = 0; + + if (!(tables = pcfReadTOC(file, &ntables))) + goto Bail; + + /* properties */ + + if (!pcfGetProperties(&pFont->info, file, tables, ntables)) + goto Bail; + + /* Use the old accelerators if no BDF accelerators are in the file */ + + hasBDFAccelerators = pcfHasType (tables, ntables, PCF_BDF_ACCELERATORS); + if (!hasBDFAccelerators) + if (!pcfGetAccel (&pFont->info, file, tables, ntables, PCF_ACCELERATORS)) + goto Bail; + + /* metrics */ + + if (!pcfSeekToType(file, tables, ntables, PCF_METRICS, &format, &size)) { + goto Bail; + } + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT) && + !PCF_FORMAT_MATCH(format, PCF_COMPRESSED_METRICS)) { + goto Bail; + } + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + nmetrics = pcfGetINT32(file, format); + else + nmetrics = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (nmetrics < 0 || nmetrics > INT32_MAX / sizeof(CharInfoRec)) { + pcfError("pmfReadFont(): invalid file format\n"); + goto Bail; + } + metrics = (CharInfoPtr) xalloc(nmetrics * sizeof(CharInfoRec)); + if (!metrics) { + pcfError("pmfReadFont(): Couldn't allocate metrics (%d*%d)\n", nmetrics, sizeof(CharInfoRec)); + goto Bail; + } + for (i = 0; i < nmetrics; i++) + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) { + if (!pcfGetMetric(file, format, &(metrics + i)->metrics)) + goto Bail; + } else { + if (!pcfGetCompressedMetric(file, format, &(metrics + i)->metrics)) + goto Bail; + } + + /* Set the bitmaps to all point to the same zero filled array + * that is the size of the largest bitmap. + */ + + pci = metrics; + sizebitmaps = 0; + for (i = 0; i < nmetrics; i++) + { + sizebitmaps = MAX(sizebitmaps,BYTES_FOR_GLYPH(pci, glyph)); + pci++; + } + +#ifdef FONTMODULE + sizebitmaps = 1024; /* Default - we xalloc the size anyway */ +#else + sizebitmaps = BUFSIZ; +#endif + /* guard against completely empty font */ + bitmaps = (char *) xalloc(sizebitmaps); + if (!bitmaps) { + pcfError("pmfReadFont(): Couldn't allocate bitmaps (%d)\n", sizebitmaps); + goto Bail; + } + + memset(bitmaps,0,sizebitmaps); + for (i = 0; i < nmetrics; i++) + metrics[i].bits = bitmaps; + + /* ink metrics ? */ + + ink_metrics = NULL; + if (pcfSeekToType(file, tables, ntables, PCF_INK_METRICS, &format, &size)) { + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT) && + !PCF_FORMAT_MATCH(format, PCF_COMPRESSED_METRICS)) { + goto Bail; + } + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + nink_metrics = pcfGetINT32(file, format); + else + nink_metrics = pcfGetINT16(file, format); + if (nink_metrics != nmetrics) + goto Bail; + if (IS_EOF(file)) goto Bail; + ink_metrics = (xCharInfo *) xalloc(nink_metrics * sizeof(xCharInfo)); + if (!ink_metrics) { + pcfError("pmfReadFont(): Couldn't allocate ink_metrics (%d*%d)\n", nink_metrics, sizeof(xCharInfo)); + goto Bail; + } + for (i = 0; i < nink_metrics; i++) + if (PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) { + if (!pcfGetMetric(file, format, ink_metrics + i)) + goto Bail; + } else { + if (!pcfGetCompressedMetric(file, format, ink_metrics + i)) + goto Bail; + } + } + + /* encoding */ + + if (!pcfSeekToType(file, tables, ntables, PCF_BDF_ENCODINGS, &format, &size)) + goto Bail; + format = pcfGetLSB32(file); + if (!PCF_FORMAT_MATCH(format, PCF_DEFAULT_FORMAT)) + goto Bail; + + pFont->info.firstCol = pcfGetINT16(file, format); + pFont->info.lastCol = pcfGetINT16(file, format); + pFont->info.firstRow = pcfGetINT16(file, format); + pFont->info.lastRow = pcfGetINT16(file, format); + pFont->info.defaultCh = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + + nencoding = (pFont->info.lastCol - pFont->info.firstCol + 1) * + (pFont->info.lastRow - pFont->info.firstRow + 1); + + encoding = (CharInfoPtr **) xcalloc(NUM_SEGMENTS(nencoding), + sizeof(CharInfoPtr*)); + if (!encoding) { + pcfError("pmfReadFont(): Couldn't allocate encoding (%d*%d)\n", nencoding, sizeof(CharInfoPtr)); + goto Bail; + } + pFont->info.allExist = TRUE; + for (i = 0; i < nencoding; i++) { + encodingOffset = pcfGetINT16(file, format); + if (IS_EOF(file)) goto Bail; + if (encodingOffset == 0xFFFF) { + pFont->info.allExist = FALSE; + } else { + if(!encoding[SEGMENT_MAJOR(i)]) { + encoding[SEGMENT_MAJOR(i)]= + (CharInfoPtr*)xcalloc(BITMAP_FONT_SEGMENT_SIZE, + sizeof(CharInfoPtr)); + if(!encoding[SEGMENT_MAJOR(i)]) + goto Bail; + } + ACCESSENCODINGL(encoding, i) = metrics + encodingOffset; + } + } + if (IS_EOF(file)) goto Bail; + + /* BDF style accelerators (i.e. bounds based on encoded glyphs) */ + + if (hasBDFAccelerators) + if (!pcfGetAccel (&pFont->info, file, tables, ntables, PCF_BDF_ACCELERATORS)) + goto Bail; + + bitmapFont = (BitmapFontPtr) xalloc(sizeof *bitmapFont); + if (!bitmapFont) { + pcfError("pmfReadFont(): Couldn't allocate bitmapFont (%d)\n", sizeof *bitmapFont); + goto Bail; + } + + bitmapFont->version_num = PCF_FILE_VERSION; + bitmapFont->num_chars = nmetrics; + bitmapFont->num_tables = ntables; + bitmapFont->metrics = metrics; + bitmapFont->ink_metrics = ink_metrics; + bitmapFont->bitmaps = bitmaps; + bitmapFont->encoding = encoding; + bitmapFont->pDefault = (CharInfoPtr) 0; + 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 = ACCESSENCODING(encoding, r * cols + c); + } + } + bitmapFont->bitmapExtra = (BitmapExtraPtr) 0; + pFont->fontPrivate = (pointer) bitmapFont; + pFont->get_glyphs = bitmapGetGlyphs; + pFont->get_metrics = bitmapGetMetrics; + pFont->unload_font = pcfUnloadFont; + pFont->unload_glyphs = NULL; + pFont->bit = bit; + pFont->byte = byte; + pFont->glyph = glyph; + pFont->scan = scan; + xfree(tables); + return Successful; +Bail: + xfree(ink_metrics); + if(encoding) { + for(i=0; i<NUM_SEGMENTS(nencoding); i++) + xfree(encoding[i]); + } + xfree(encoding); + xfree(bitmaps); + xfree(metrics); + xfree(pFont->info.props); + pFont->info.nprops = 0; + pFont->info.props = 0; + xfree (pFont->info.isStringProp); + xfree(bitmapFont); + xfree(tables); + return AllocError; +} |