/* $XConsortium: osPexFont.c,v 5.8 94/04/17 20:36:01 rws Exp $ */ /* Copyright (c) 1989, 1990, 1991 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: 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 X CONSORTIUM 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 X Consortium 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 X Consortium. Copyright 1989, 1990, 1991 by Sun Microsystems, Inc. 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 Sun Microsystems, not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SUN MICROSYSTEMS 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. */ #include #ifndef X_NOT_STDC_ENV #include #else extern char *getenv(); #endif #include #include "mipex.h" #include "miFont.h" #include "PEXErr.h" #define XK_LATIN1 #include "keysymdef.h" #ifndef PEX_DEFAULT_FONTPATH #define PEX_DEFAULT_FONTPATH "/usr/lib/X11/fonts/PEX" #endif #ifndef X_NOT_POSIX #include #else #ifdef SYSV #include #else #ifdef USG #include #else #include #ifndef dirent #define dirent direct #endif #endif #endif #endif /* A convenient shorthand. */ typedef struct dirent ENTRY; extern void CopyISOLatin1Lowered(); extern int get_lowered_truncated_entry(); void ClosePEXFontFile(); void SetPEXFontFilePtr(); extern diFontHandle defaultPEXFont; /* * Unless an environment variable named PEX_FONTPATH is set before the * server is started up, PEX will look in the path defined in the * PEX_DEFAULT_FONTPATH compiler constant defined in miFont.h for PEX fonts. * If environment variable PEX_FONTPATH is defined, then this will * be used as the path to the fonts . */ static char * pex_get_font_directory_path() { static int already_determined = 0; static char *font_dir_path = NULL; if (!already_determined) { if (getenv("PEX_FONTPATH")) { font_dir_path = (char *)Xalloc((unsigned long)(1+strlen(getenv("PEX_FONTPATH")))); strcpy(font_dir_path, getenv("PEX_FONTPATH")); } else { font_dir_path = (char *)Xalloc((unsigned long)(1+strlen(PEX_DEFAULT_FONTPATH))); strcpy(font_dir_path, PEX_DEFAULT_FONTPATH); } already_determined = 1; } return (font_dir_path); } /* * The next two functions (pex_setup_wild_match() and pex_is_matching()) are * stolen (and slightly modified) from MIT X11R4 fonts/mkfontdir/fontdir.c. * pex_setup_wild_match() sets up some state about the pattern to match, which * pex_is_matching() then uses. */ /* results of this function are used by pex_is_matching() */ static void pex_setup_wild_match(pat, phead, ptail, plen) char *pat; /* in */ int *phead, *ptail, *plen; /* out */ { register int head, tail; register char c, *firstWild; *plen = tail = strlen(pat); for ( firstWild = pat; ((c = *firstWild) && !((c == XK_asterisk) || (c == XK_question))); firstWild++) ; head = firstWild - pat; while ((c = pat[head]) && (c != XK_asterisk)) head++; if (head < tail) { while (pat[tail-1] != XK_asterisk) tail--; } *phead = head; *ptail = tail; } /* returns value greater than 0 if successful. head, tail, and plen * come from a previous call to pex_setup_wild_match */ static int pex_is_matching(string, pat, head, tail, plen) register char *string; /* in */ register char *pat; /* in */ int head, tail, plen; /* in */ { register int i, l; int j, m, res; register char cp, cs; res = -1; for (i = 0; i < head; i++) { cp = pat[i]; if (cp == XK_question) { if (!string[i]) return res; res = 0; } else if (cp != string[i]) return res; } if (head == plen) return (string[head] ? res : 1); l = head; while (++i < tail) { /* we just skipped an asterisk */ j = i; m = l; while ((cp = pat[i]) != XK_asterisk) { if (!(cs = string[l])) return 0; if ((cp != cs) && (cp != XK_question)) { m++; cp = pat[j]; if (cp == XK_asterisk) { if (!string[m]) return 0; } else { while ((cs = string[m]) != cp) { if (!cs) return 0; m++; } } l = m; i = j; } l++; i++; } } m = strlen(&string[l]); j = plen - tail; if (m < j) return 0; l = (l + m) - j; while (cp = pat[i]) { if ((cp != string[l]) && (cp != XK_question)) return 0; l++; i++; } return 1; } /* * Caller is responsible for freeing contents of buffer and buffer when * done with it. */ #define ABSOLUTE_MAX_NAMES 200 int pex_get_matching_names(patLen, pPattern, maxNames, numNames, names) ddUSHORT patLen; /* in */ ddUCHAR *pPattern; /* in */ ddUSHORT maxNames; /* in */ ddULONG *numNames; /* out - number of names found */ char ***names; /* out - pointer to list of strings */ { DIR *fontdir; ENTRY *dir_entry; char pattern[100]; char entry[100]; int i, head, tail, len, total = 0; CopyISOLatin1Lowered((unsigned char*)pattern, pPattern, patLen); if (!(*names = (char **)Xalloc((unsigned long)(ABSOLUTE_MAX_NAMES * sizeof(char *))))) return 0; if (!(fontdir = opendir(pex_get_font_directory_path()))) return 0; pex_setup_wild_match(pattern, &head, &tail, &len); do { dir_entry = readdir(fontdir); if (dir_entry) { if (!get_lowered_truncated_entry(dir_entry->d_name, entry)) continue; if (pex_is_matching(entry, pattern, head, tail, len) > 0) { if (!( (*names)[total] = (char *)Xalloc((unsigned long)(1 + strlen(entry))))) { for (i = 0; i < total; i++) Xfree((*names)[i]); Xfree(*names); return 0; } strcpy((*names)[total], entry); total++; } } } while (dir_entry && total < maxNames); closedir(fontdir); *numNames = total; return 1; } /* * get_stroke(stroke, fp) extracts the definition of characters * from the font file. It return -1 if anything goes wrong, 0 if * everything is OK. */ static int get_stroke(stroke, fp) Ch_stroke_data *stroke; FILE *fp; { listofddPoint *spath; register int i; unsigned long closed; /* placeholder, really unused */ register ddULONG npath; register miListHeader *hdr = &(stroke->strokes); stroke->n_vertices = 0; npath = hdr->maxLists = hdr->numLists; hdr->type = DD_2D_POINT; hdr->ddList = spath = (listofddPoint *) Xalloc((unsigned long)(sizeof(listofddPoint) * npath)); if (spath == NULL) return -1; for (i = 0; i < npath; i++, spath++) spath->pts.p2Dpt = NULL; for (i = 0, spath = hdr->ddList; i < npath; i++, spath++) { /* for each subpath of the character definition ... */ if (fread((char *) &spath->numPoints, sizeof(spath->numPoints), 1, fp) != 1 || fread((char *) &closed, sizeof(closed), 1, fp) != 1) return -1; if (spath->numPoints <= 0) continue; spath->maxData = sizeof(ddCoord2D) * spath->numPoints; if (!(spath->pts.p2Dpt = (ddCoord2D *) Xalloc((unsigned long)(spath->maxData)))) return -1; if (fread((char *)spath->pts.p2Dpt, sizeof(ddCoord2D), spath->numPoints, fp) != spath->numPoints) return -1; stroke->n_vertices += spath->numPoints; } return 0; } /* read in the pex font */ ErrorCode LoadPEXFontFile(length, fontname, pFont) unsigned length; char * fontname; diFontHandle pFont; { char fname[100]; FILE *fp; Font_file_header header; Property *properties = 0; Dispatch *table = 0; miFontHeader *font = (miFontHeader *)(pFont->deviceData); int found_first, found_it = 0, err = Success, numChars, np; char name_to_match[100]; char lowered_entry[100]; DIR *fontdir; ENTRY *dir_entry; register int i; register Ch_stroke_data **ch_font, *ch_stroke = 0; register Dispatch *tblptr = 0; register Property *propptr = 0; register pexFontProp *fpptr = 0; CopyISOLatin1Lowered((unsigned char *)name_to_match, (unsigned char *)fontname, length); /* open up the font directory and look for matching file names */ if (!(fontdir = opendir(pex_get_font_directory_path()))) return (PEXERR(PEXFontError)); do { dir_entry = readdir(fontdir); if (dir_entry) { /* strip off .phont and make all lower case */ if (!get_lowered_truncated_entry(dir_entry->d_name, lowered_entry)) continue; /* does this match what got passed in? */ if (strcmp(lowered_entry, name_to_match) == 0) found_it = 1; } } while (dir_entry && !found_it); if (!found_it) return (PEXERR(PEXFontError)); (void) strcpy(fname, pex_get_font_directory_path()); (void) strcat(fname, "/"); (void) strcat(fname, dir_entry->d_name); closedir(fontdir); if ((fp = fopen(fname, "r")) == NULL) return (PEXERR(PEXFontError)); /* * read in the file header. The file header has fields containing the * num of characters in the font, the extreme values, and number of font * properties defined, if any. */ tblptr = 0; if (fread((char *) &header, sizeof(header), 1, fp) != 1) { (void) ClosePEXFontFile(fp); return (PEXERR(PEXFontError)); } /* Initialize font structure */ (void) strcpy(font->name, header.name); font->font_type = FONT_POLYLINES; font->top = header.top; font->bottom = header.bottom; font->num_ch = header.num_ch; font->font_info.numProps = (CARD32)header.num_props; font->max_width = header.max_width; /* read in the font properties, if any, into font data area */ if (header.num_props > 0) { (void) SetPEXFontFilePtr(fp, START_PROPS); /* Get to props position */ properties = (Property *) Xalloc(header.num_props * sizeof(Property)); if (properties == NULL) { (void) ClosePEXFontFile(fp); return (BadAlloc); } if (fread((char *) properties, sizeof(Property), header.num_props, fp) != header.num_props) { Xfree((char *) properties); (void) ClosePEXFontFile(fp); return (PEXERR(PEXFontError)); } /* Create space for font properties in the font data area */ font->properties = (pexFontProp *) Xalloc( (unsigned long)(header.num_props * sizeof(pexFontProp))); if (font->properties == NULL) { Xfree((char *) properties); (void) ClosePEXFontFile(fp); return (BadAlloc); } np = header.num_props; for ( i=0, propptr = properties, fpptr = font->properties; i < np; i++, propptr++, fpptr++) { if (propptr->propname == NULL) { (header.num_props)--; continue; } fpptr->name = MakeAtom( (char *)propptr->propname, strlen(propptr->propname), 1); if (propptr->propvalue != NULL) fpptr->value = MakeAtom((char *)propptr->propvalue, strlen(propptr->propvalue), 1); else fpptr->value = 0; } /* free up local storage allocated for properties */ Xfree((char *) properties); } /* position file pointer to dispatch data */ (void) SetPEXFontFilePtr(fp, (long) START_DISPATCH(header.num_props)); /* * read in the distable font, use the offset to see if the * character is defined or not. The strokes are defined in Phigs style. * The "center" of the character is not the physical center. It is the * center defined by the font designer. The actual center is half the * "right" value. */ table = (Dispatch *)Xalloc((unsigned long)(sizeof(Dispatch) *font->num_ch)); if (table == NULL) { (void) ClosePEXFontFile(fp); return (BadAlloc); } if (fread((char *) table, sizeof(Dispatch), font->num_ch, fp) != font->num_ch) { Xfree((char *) table); (void) ClosePEXFontFile(fp); return (PEXERR(PEXFontError)); } font->ch_data = (Ch_stroke_data **) Xalloc((unsigned long)(sizeof(Ch_stroke_data *) * font->num_ch)); if (font->ch_data == NULL) { Xfree((char *) table); (void) ClosePEXFontFile(fp); return (BadAlloc); } /* The next loop initializes all ch_data pointers to null; essential for non-crashing during font clean-up in case of failed font file read. Also count the number of non-blank chars. */ for ( i = 0, ch_font = font->ch_data, tblptr = table, numChars = 0; i < font->num_ch; i++, ch_font++, tblptr++) { *ch_font = NULL; if (tblptr->offset != 0) numChars++; } ch_stroke = (Ch_stroke_data *)Xalloc((unsigned long)(numChars * sizeof(Ch_stroke_data))); if (!ch_stroke) { err = BadAlloc; goto disaster; } /* read in the char data (the font file format should be changed so that the allocation can be done outside this loop--this method is inefficient) */ for ( i = 0, ch_font = font->ch_data, tblptr = table, found_first = 0; i < font->num_ch; i++, ch_font++, tblptr++) { if (tblptr->offset != 0) { (*ch_font) = ch_stroke++; (*ch_font)->strokes.ddList = NULL; (*ch_font)->center = table[i].center; (*ch_font)->right = table[i].right; (void) SetPEXFontFilePtr(fp, tblptr->offset); /* read in the type, number of subpaths, and n_vertices fields */ if ( (fread(&((*ch_font)->type), sizeof(Font_path_type), 1, fp) != 1) || (fread(&((*ch_font)->strokes.numLists), sizeof(ddULONG),1,fp) != 1) || (fread(&((*ch_font)->n_vertices), sizeof(ddULONG), 1, fp) != 1) ) { err = PEXERR(PEXFontError); goto disaster; } (*ch_font)->strokes.maxLists = (*ch_font)->strokes.numLists; if ((*ch_font)->strokes.numLists > 0) { if (get_stroke(*ch_font, fp)) { err = BadAlloc; goto disaster; } if (!found_first) { font->font_info.firstGlyph = i; found_first = 1; } font->font_info.lastGlyph = i; } } } Xfree((char *)table); (void) ClosePEXFontFile(fp); return (Success); disaster: (void) ClosePEXFontFile(fp); if (table) Xfree(table); if (pFont == defaultPEXFont) defaultPEXFont = 0; /* force free */ FreePEXFont((diFontHandle) pFont, pFont->id); return (err); } void ClosePEXFontFile(fp) FILE *fp; { fclose (fp); } void SetPEXFontFilePtr(fp,where) FILE *fp; long where; { (void) fseek(fp, where, SEEK_SET); /* set pointer at "where" bytes from the beginning of the file */ }