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+/*
+ * (C) 1988, 1989, 1990 by Adobe Systems Incorporated. All rights reserved.
+ *
+ * This file may be freely copied and redistributed as long as:
+ * 1) This entire notice continues to be included in the file,
+ * 2) If the file has been modified in any way, a notice of such
+ * modification is conspicuously indicated.
+ *
+ * PostScript, Display PostScript, and Adobe are registered trademarks of
+ * Adobe Systems Incorporated.
+ *
+ * ************************************************************************
+ * THE INFORMATION BELOW IS FURNISHED AS IS, IS SUBJECT TO CHANGE WITHOUT
+ * NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ADOBE SYSTEMS
+ * INCORPORATED. ADOBE SYSTEMS INCORPORATED ASSUMES NO RESPONSIBILITY OR
+ * LIABILITY FOR ANY ERRORS OR INACCURACIES, MAKES NO WARRANTY OF ANY
+ * KIND (EXPRESS, IMPLIED OR STATUTORY) WITH RESPECT TO THIS INFORMATION,
+ * AND EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR PARTICULAR PURPOSES AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+ * ************************************************************************
+ */
+
+/*
+ * Changes made for OpenOffice.org
+ *
+ * 10/24/2000 pl - changed code to compile with c++-compilers
+ * - added namespace to avoid symbol clashes
+ * - replaced BOOL by bool
+ * - added function to free space allocated by parseFile
+ * 10/26/2000 pl - added additional keys
+ * - added ability to parse slightly broken files
+ * - added charwidth member to GlobalFontInfo
+ * 04/26/2001 pl - added OpenOffice header
+ */
+
+/*************************************************************************
+ *
+ * $RCSfile: parseAFM.cxx,v $
+ *
+ * $Revision: 1.1.1.1 $
+ *
+ * last change: $Author: pl $ $Date: 2001-05-08 11:45:36 $
+ *
+ ************************************************************************/
+
+/* parseAFM.c
+ *
+ * This file is used in conjuction with the parseAFM.h header file.
+ * This file contains several procedures that are used to parse AFM
+ * files. It is intended to work with an application program that needs
+ * font metric information. The program can be used as is by making a
+ * procedure call to "parseFile" (passing in the expected parameters)
+ * and having it fill in a data structure with the data from the
+ * AFM file, or an application developer may wish to customize this
+ * code.
+ *
+ * There is also a file, parseAFMclient.c, that is a sample application
+ * showing how to call the "parseFile" procedure and how to use the data
+ * after "parseFile" has returned.
+ *
+ * Please read the comments in parseAFM.h and parseAFMclient.c.
+ *
+ * History:
+ * original: DSM Thu Oct 20 17:39:59 PDT 1988
+ * modified: DSM Mon Jul 3 14:17:50 PDT 1989
+ * - added 'storageProblem' return code
+ * - fixed bug of not allocating extra byte for string duplication
+ * - fixed typos
+ * modified: DSM Tue Apr 3 11:18:34 PDT 1990
+ * - added free(ident) at end of parseFile routine
+ * modified: DSM Tue Jun 19 10:16:29 PDT 1990
+ * - changed (width == 250) to (width = 250) in initializeArray
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/file.h>
+#include <math.h>
+#include <parseAFM.hxx>
+#include <psprint/strhelper.hxx>
+
+#define lineterm EOL /* line terminating character */
+#define normalEOF 1 /* return code from parsing routines used only */
+/* in this module */
+#define Space "space" /* used in string comparison to look for the width */
+/* of the space character to init the widths array */
+#define False "false" /* used in string comparison to check the value of */
+/* boolean keys (e.g. IsFixedPitch) */
+
+#define MATCH(A,B) (strncmp((A),(B), MAX_NAME) == 0)
+
+namespace psp {
+
+/*************************** GLOBALS ***********************/
+
+static char *ident = NULL; /* storage buffer for keywords */
+
+
+/* "shorts" for fast case statement
+ * The values of each of these enumerated items correspond to an entry in the
+ * table of strings defined below. Therefore, if you add a new string as
+ * new keyword into the keyStrings table, you must also add a corresponding
+ * parseKey AND it MUST be in the same position!
+ *
+ * IMPORTANT: since the sorting algorithm is a binary search, the strings of
+ * keywords must be placed in lexicographical order, below. [Therefore, the
+ * enumerated items are not necessarily in lexicographical order, depending
+ * on the name chosen. BUT, they must be placed in the same position as the
+ * corresponding key string.] The NOPE shall remain in the last position,
+ * since it does not correspond to any key string, and it is used in the
+ * "recognize" procedure to calculate how many possible keys there are.
+ */
+
+// some metrics have Ascent, Descent instead Ascender, Descender or Em
+// which is not allowed per afm spcification, but let us handle
+// this gently
+enum parseKey {
+ ASCENDER, ASCENT, CHARBBOX, CODE, COMPCHAR, CODEHEX, CAPHEIGHT, CHARWIDTH, CHARACTERS, COMMENT,
+ DESCENDER, DESCENT, EM, ENCODINGSCHEME, ENDCHARMETRICS, ENDCOMPOSITES, ENDDIRECTION,
+ ENDFONTMETRICS, ENDKERNDATA, ENDKERNPAIRS, ENDTRACKKERN,
+ FAMILYNAME, FONTBBOX, FONTNAME, FULLNAME, ISBASEFONT, ISFIXEDPITCH,
+ ITALICANGLE, KERNPAIR, KERNPAIRXAMT, LIGATURE, MAPPINGSCHEME, METRICSSETS, CHARNAME,
+ NOTICE, COMPCHARPIECE, STARTCHARMETRICS, STARTCOMPOSITES, STARTDIRECTION,
+ STARTFONTMETRICS, STARTKERNDATA, STARTKERNPAIRS,
+ STARTTRACKKERN, TRACKKERN, UNDERLINEPOSITION,
+ UNDERLINETHICKNESS, VVECTOR, VERSION, XYWIDTH, X0WIDTH, XWIDTH, WEIGHT, XHEIGHT,
+ NOPE
+};
+
+/* keywords for the system:
+ * This a table of all of the current strings that are vaild AFM keys.
+ * Each entry can be referenced by the appropriate parseKey value (an
+ * enumerated data type defined above). If you add a new keyword here,
+ * a corresponding parseKey MUST be added to the enumerated data type
+ * defined above, AND it MUST be added in the same position as the
+ * string is in this table.
+ *
+ * IMPORTANT: since the sorting algorithm is a binary search, the keywords
+ * must be placed in lexicographical order. And, NULL should remain at the
+ * end.
+ */
+
+static char *keyStrings[] = {
+ "Ascender", "Ascent", "B", "C", "CC", "CH", "CapHeight", "CharWidth", "Characters", "Comment",
+ "Descender", "Descent", "Em", "EncodingScheme", "EndCharMetrics", "EndComposites", "EndDirection",
+ "EndFontMetrics", "EndKernData", "EndKernPairs", "EndTrackKern",
+ "FamilyName", "FontBBox", "FontName", "FullName", "IsBaseFont", "IsFixedPitch",
+ "ItalicAngle", "KP", "KPX", "L", "MappingScheme", "MetricsSets", "N",
+ "Notice", "PCC", "StartCharMetrics", "StartComposites", "StartDirection",
+ "StartFontMetrics", "StartKernData", "StartKernPairs",
+ "StartTrackKern", "TrackKern", "UnderlinePosition",
+ "UnderlineThickness", "V", "Version", "W", "W0X", "WX", "Weight", "XHeight",
+ NULL};
+
+/*************************** PARSING ROUTINES **************/
+
+/*************************** token *************************/
+
+/* A "AFM File Conventions" tokenizer. That means that it will
+ * return the next token delimited by white space. See also
+ * the `linetoken' routine, which does a similar thing but
+ * reads all tokens until the next end-of-line.
+ */
+
+static char *token( FILE* stream )
+{
+ int ch, idx;
+
+ /* skip over white space */
+ while ((ch = fgetc(stream)) == ' ' || ch == lineterm || ch == '\r' ||
+ ch == ',' || ch == '\t' || ch == ';');
+
+ idx = 0;
+ while (ch != EOF && ch != ' ' && ch != lineterm && ch != '\r'
+ && ch != '\t' && ch != ':' && ch != ';')
+ {
+ ident[idx++] = ch;
+ ch = fgetc(stream);
+ } /* while */
+
+ if (ch == EOF && idx < 1) return ((char *)NULL);
+ if (idx >= 1 && ch != ':' ) ungetc(ch, stream);
+ if (idx < 1 ) ident[idx++] = ch; /* single-character token */
+ ident[idx] = 0;
+
+ return(ident); /* returns pointer to the token */
+
+} /* token */
+
+
+/*************************** linetoken *************************/
+
+/* "linetoken" will get read all tokens until the EOL character from
+ * the given stream. This is used to get any arguments that can be
+ * more than one word (like Comment lines and FullName).
+ */
+
+static char *linetoken( FILE* stream )
+{
+ int ch, idx;
+
+ while ((ch = fgetc(stream)) == ' ' || ch == '\t' );
+
+ idx = 0;
+ while (ch != EOF && ch != lineterm && ch != '\r')
+ {
+ ident[idx++] = ch;
+ ch = fgetc(stream);
+ } /* while */
+
+ ungetc(ch, stream);
+ ident[idx] = 0;
+
+ return(ident); /* returns pointer to the token */
+
+} /* linetoken */
+
+
+/*************************** recognize *************************/
+
+/* This function tries to match a string to a known list of
+ * valid AFM entries (check the keyStrings array above).
+ * "ident" contains everything from white space through the
+ * next space, tab, or ":" character.
+ *
+ * The algorithm is a standard Knuth binary search.
+ */
+
+static enum parseKey recognize( register char* ident)
+{
+ int lower = 0, upper = (int) NOPE, midpoint, cmpvalue;
+ bool found = false;
+
+ while ((upper >= lower) && !found)
+ {
+ midpoint = (lower + upper)/2;
+ if (keyStrings[midpoint] == NULL) break;
+ cmpvalue = strncmp(ident, keyStrings[midpoint], MAX_NAME);
+ if (cmpvalue == 0) found = true;
+ else if (cmpvalue < 0) upper = midpoint - 1;
+ else lower = midpoint + 1;
+ } /* while */
+
+ if (found) return (enum parseKey) midpoint;
+ else return NOPE;
+
+} /* recognize */
+
+
+/************************* parseGlobals *****************************/
+
+/* This function is called by "parseFile". It will parse the AFM File
+ * up to the "StartCharMetrics" keyword, which essentially marks the
+ * end of the Global Font Information and the beginning of the character
+ * metrics information.
+ *
+ * If the caller of "parseFile" specified that it wanted the Global
+ * Font Information (as defined by the "AFM File Specification"
+ * document), then that information will be stored in the returned
+ * data structure.
+ *
+ * Any Global Font Information entries that are not found in a
+ * given file, will have the usual default initialization value
+ * for its type (i.e. entries of type int will be 0, etc).
+ *
+ * This function returns an error code specifying whether there was
+ * a premature EOF or a parsing error. This return value is used by
+ * parseFile to determine if there is more file to parse.
+ */
+
+static bool parseGlobals( FILE* fp, register GlobalFontInfo* gfi )
+{
+ bool cont = true, save = (gfi != NULL);
+ int error = ok;
+ register char *keyword;
+ int direction = -1;
+
+ while (cont)
+ {
+ keyword = token(fp);
+
+ if (keyword == NULL)
+ /* Have reached an early and unexpected EOF. */
+ /* Set flag and stop parsing */
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ if (!save)
+ /* get tokens until the end of the Global Font info section */
+ /* without saving any of the data */
+ switch (recognize(keyword))
+ {
+ case STARTCHARMETRICS:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ default:
+ break;
+ } /* switch */
+ else
+ /* otherwise parse entire global font info section, */
+ /* saving the data */
+ switch(recognize(keyword))
+ {
+ case STARTFONTMETRICS:
+ keyword = token(fp);
+ gfi->afmVersion = strdup( keyword );
+ break;
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case FONTNAME:
+ keyword = token(fp);
+ gfi->fontName = strdup( keyword );
+ break;
+ case ENCODINGSCHEME:
+ keyword = token(fp);
+ gfi->encodingScheme = strdup( keyword );
+ break;
+ case FULLNAME:
+ keyword = linetoken(fp);
+ gfi->fullName = strdup( keyword );
+ break;
+ case FAMILYNAME:
+ keyword = linetoken(fp);
+ gfi->familyName = strdup( keyword );
+ break;
+ case WEIGHT:
+ keyword = token(fp);
+ gfi->weight = strdup( keyword );
+ break;
+ case ITALICANGLE:
+ keyword = token(fp);
+ gfi->italicAngle = StringToDouble( keyword );
+ break;
+ case ISFIXEDPITCH:
+ keyword = token(fp);
+ if (MATCH(keyword, False))
+ gfi->isFixedPitch = 0;
+ else
+ gfi->isFixedPitch = 1;
+ break;
+ case UNDERLINEPOSITION:
+ keyword = token(fp);
+ gfi->underlinePosition = atoi(keyword);
+ break;
+ case UNDERLINETHICKNESS:
+ keyword = token(fp);
+ gfi->underlineThickness = atoi(keyword);
+ break;
+ case VERSION:
+ keyword = token(fp);
+ gfi->version = strdup( keyword );
+ break;
+ case NOTICE:
+ keyword = linetoken(fp);
+ gfi->notice = strdup( keyword );
+ break;
+ case FONTBBOX:
+ keyword = token(fp);
+ gfi->fontBBox.llx = atoi(keyword);
+ keyword = token(fp);
+ gfi->fontBBox.lly = atoi(keyword);
+ keyword = token(fp);
+ gfi->fontBBox.urx = atoi(keyword);
+ keyword = token(fp);
+ gfi->fontBBox.ury = atoi(keyword);
+ break;
+ case CAPHEIGHT:
+ keyword = token(fp);
+ gfi->capHeight = atoi(keyword);
+ break;
+ case XHEIGHT:
+ keyword = token(fp);
+ gfi->xHeight = atoi(keyword);
+ break;
+ case DESCENT:
+ keyword = token(fp);
+ gfi->descender = -atoi(keyword);
+ break;
+ case DESCENDER:
+ keyword = token(fp);
+ gfi->descender = atoi(keyword);
+ break;
+ case ASCENT:
+ case ASCENDER:
+ keyword = token(fp);
+ gfi->ascender = atoi(keyword);
+ break;
+ case STARTCHARMETRICS:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case EM:
+ // skip one token
+ keyword = token(fp);
+ break;
+ case STARTDIRECTION:
+ keyword = token(fp);
+ direction = atoi(keyword);
+ break; /* ignore this for now */
+ case ENDDIRECTION:
+ break; /* ignore this for now */
+ case MAPPINGSCHEME:
+ keyword = token(fp);
+ break; /* ignore this for now */
+ case CHARACTERS:
+ keyword = token(fp);
+ break; /* ignore this for now */
+ case ISBASEFONT:
+ keyword = token(fp);
+ break; /* ignore this for now */
+ case CHARWIDTH:
+ keyword = token(fp);
+ if (direction == 0)
+ gfi->charwidth = atoi(keyword);
+ keyword = token(fp);
+ /* ignore y-width for now */
+ break;
+ case METRICSSETS:
+ keyword = token(fp);
+ break; /* ignore this for now */
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ return(error);
+
+} /* parseGlobals */
+
+
+
+/************************* initializeArray ************************/
+
+/* Unmapped character codes are (at Adobe Systems) assigned the
+ * width of the space character (if one exists) else they get the
+ * value of 250 ems. This function initializes all entries in the
+ * char widths array to have this value. Then any mapped character
+ * codes will be replaced with the width of the appropriate character
+ * when parsing the character metric section.
+
+ * This function parses the Character Metrics Section looking
+ * for a space character (by comparing character names). If found,
+ * the width of the space character will be used to initialize the
+ * values in the array of character widths.
+ *
+ * Before returning, the position of the read/write pointer of the
+ * file is reset to be where it was upon entering this function.
+ */
+
+static int initializeArray( FILE* fp, register int* cwi)
+{
+ bool cont = true, found = false;
+ long opos = ftell(fp);
+ int code = 0, width = 0, i = 0, error = 0;
+ register char *keyword;
+
+ while (cont)
+ {
+ keyword = token(fp);
+ if (keyword == NULL)
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ switch(recognize(keyword))
+ {
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case CODE:
+ code = atoi(token(fp));
+ break;
+ case CODEHEX:
+ sscanf(token(fp),"<%x>", &code);
+ break;
+ case XWIDTH:
+ width = atoi(token(fp));
+ break;
+ case X0WIDTH:
+ (void) token(fp);
+ break;
+ case CHARNAME:
+ keyword = token(fp);
+ if (MATCH(keyword, Space))
+ {
+ cont = false;
+ found = true;
+ }
+ break;
+ case ENDCHARMETRICS:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ if (!found)
+ width = 250;
+
+ for (i = 0; i < 256; ++i)
+ cwi[i] = width;
+
+ fseek(fp, opos, 0);
+
+ return(error);
+
+} /* initializeArray */
+
+
+/************************* parseCharWidths **************************/
+
+/* This function is called by "parseFile". It will parse the AFM File
+ * up to the "EndCharMetrics" keyword. It will save the character
+ * width info (as opposed to all of the character metric information)
+ * if requested by the caller of parseFile. Otherwise, it will just
+ * parse through the section without saving any information.
+ *
+ * If data is to be saved, parseCharWidths is passed in a pointer
+ * to an array of widths that has already been initialized by the
+ * standard value for unmapped character codes. This function parses
+ * the Character Metrics section only storing the width information
+ * for the encoded characters into the array using the character code
+ * as the index into that array.
+ *
+ * This function returns an error code specifying whether there was
+ * a premature EOF or a parsing error. This return value is used by
+ * parseFile to determine if there is more file to parse.
+ */
+
+static parseCharWidths( FILE* fp, register int* cwi)
+{
+ bool cont = true, save = (cwi != NULL);
+ int pos = 0, error = ok;
+ register char *keyword;
+
+ while (cont)
+ {
+ keyword = token(fp);
+ /* Have reached an early and unexpected EOF. */
+ /* Set flag and stop parsing */
+ if (keyword == NULL)
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ if (!save)
+ /* get tokens until the end of the Char Metrics section without */
+ /* saving any of the data*/
+ switch (recognize(keyword))
+ {
+ case ENDCHARMETRICS:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ default:
+ break;
+ } /* switch */
+ else
+ /* otherwise parse entire char metrics section, saving */
+ /* only the char x-width info */
+ switch(recognize(keyword))
+ {
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case CODE:
+ keyword = token(fp);
+ pos = atoi(keyword);
+ break;
+ case XYWIDTH:
+ /* PROBLEM: Should be no Y-WIDTH when doing "quick & dirty" */
+ keyword = token(fp); keyword = token(fp); /* eat values */
+ error = parseError;
+ break;
+ case CODEHEX:
+ keyword = token(fp);
+ sscanf(keyword, "<%x>", &pos);
+ break;
+ case X0WIDTH:
+ (void) token(fp);
+ break;
+ case XWIDTH:
+ keyword = token(fp);
+ if (pos >= 0) /* ignore unmapped chars */
+ cwi[pos] = atoi(keyword);
+ break;
+ case ENDCHARMETRICS:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case CHARNAME: /* eat values (so doesn't cause parseError) */
+ keyword = token(fp);
+ break;
+ case CHARBBOX:
+ keyword = token(fp); keyword = token(fp);
+ keyword = token(fp); keyword = token(fp);
+ break;
+ case LIGATURE:
+ keyword = token(fp); keyword = token(fp);
+ break;
+ case VVECTOR:
+ keyword = token(fp);
+ keyword = token(fp);
+ break;
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ return(error);
+
+} /* parseCharWidths */
+
+
+/*
+ * number of char metrics is almost allways inaccurate, so be gentle and try to
+ * adapt our internal storage by adjusting the allocated list
+ */
+
+static int
+reallocFontMetrics( void **pp_fontmetrics, int *p_oldcount, unsigned int n_newcount,
+ unsigned int n_size )
+{
+ char *p_tmpmetrics = NULL;
+
+ if ((pp_fontmetrics == NULL) || (*pp_fontmetrics == NULL))
+ return storageProblem;
+
+ if (*p_oldcount == n_newcount)
+ return ok;
+
+ p_tmpmetrics = (char*)realloc(*pp_fontmetrics, n_newcount * n_size);
+ if (p_tmpmetrics == NULL)
+ return storageProblem;
+
+ if ( n_newcount > *p_oldcount )
+ {
+ char *p_inimetrics = p_tmpmetrics + n_size * *p_oldcount;
+ int n_inimetrics = n_size * (n_newcount - *p_oldcount);
+ memset( p_inimetrics, 0, n_inimetrics );
+ }
+
+ *pp_fontmetrics = p_tmpmetrics;
+ *p_oldcount = n_newcount;
+
+ return ok;
+}
+
+static unsigned int
+enlargeCount( unsigned int n_oldcount )
+{
+ unsigned int n_newcount = n_oldcount + n_oldcount / 5;
+ if (n_oldcount == n_newcount )
+ n_newcount = n_oldcount + 5;
+
+ return n_newcount;
+}
+
+/************************* parseCharMetrics ************************/
+
+/* This function is called by parseFile if the caller of parseFile
+ * requested that all character metric information be saved
+ * (as opposed to only the character width information).
+ *
+ * parseCharMetrics is passed in a pointer to an array of records
+ * to hold information on a per character basis. This function
+ * parses the Character Metrics section storing all character
+ * metric information for the ALL characters (mapped and unmapped)
+ * into the array.
+ *
+ * This function returns an error code specifying whether there was
+ * a premature EOF or a parsing error. This return value is used by
+ * parseFile to determine if there is more file to parse.
+ */
+
+static parseCharMetrics( FILE* fp, register FontInfo* fi)
+{
+ bool cont = true, firstTime = true;
+ int error = ok, count = 0;
+ register CharMetricInfo *temp = fi->cmi;
+ register char *keyword;
+
+ while (cont)
+ {
+ keyword = token(fp);
+ if (keyword == NULL)
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ switch(recognize(keyword))
+ {
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case CODE:
+ if (!(count < fi->numOfChars))
+ {
+ reallocFontMetrics( (void**)&(fi->cmi),
+ &(fi->numOfChars), enlargeCount(fi->numOfChars),
+ sizeof(CharMetricInfo) );
+ temp = &(fi->cmi[ count - 1 ]);
+ }
+ if (count < fi->numOfChars)
+ {
+ if (firstTime) firstTime = false;
+ else temp++;
+ temp->code = atoi(token(fp));
+ if (fi->gfi && fi->gfi->charwidth)
+ temp->wx = fi->gfi->charwidth;
+ count++;
+ }
+ else
+ {
+ error = parseError;
+ cont = false;
+ }
+ break;
+ case CODEHEX:
+ if (!(count < fi->numOfChars ))
+ {
+ reallocFontMetrics( (void**)&(fi->cmi),
+ &(fi->numOfChars), enlargeCount(fi->numOfChars),
+ sizeof(CharMetricInfo) );
+ temp = &(fi->cmi[ count - 1 ]);
+ }
+ if (count < fi->numOfChars) {
+ if (firstTime)
+ firstTime = FALSE;
+ else
+ temp++;
+ sscanf(token(fp),"<%x>", &temp->code);
+ if (fi->gfi && fi->gfi->charwidth)
+ temp->wx = fi->gfi->charwidth;
+ count++;
+ }
+ else {
+ error = parseError;
+ cont = FALSE;
+ }
+ break;
+ case XYWIDTH:
+ temp->wx = atoi(token(fp));
+ temp->wy = atoi(token(fp));
+ break;
+ case X0WIDTH:
+ temp->wx = atoi(token(fp));
+ break;
+ case XWIDTH:
+ temp->wx = atoi(token(fp));
+ break;
+ case CHARNAME:
+ keyword = token(fp);
+ temp->name = (char *) malloc(strlen(keyword) + 1);
+ strcpy(temp->name, keyword);
+ break;
+ case CHARBBOX:
+ temp->charBBox.llx = atoi(token(fp));
+ temp->charBBox.lly = atoi(token(fp));
+ temp->charBBox.urx = atoi(token(fp));
+ temp->charBBox.ury = atoi(token(fp));
+ break;
+ case LIGATURE: {
+ Ligature **tail = &(temp->ligs);
+ Ligature *node = *tail;
+
+ if (*tail != NULL)
+ {
+ while (node->next != NULL)
+ node = node->next;
+ tail = &(node->next);
+ }
+
+ *tail = (Ligature *) calloc(1, sizeof(Ligature));
+ keyword = token(fp);
+ (*tail)->succ = (char *) malloc(strlen(keyword) + 1);
+ strcpy((*tail)->succ, keyword);
+ keyword = token(fp);
+ (*tail)->lig = (char *) malloc(strlen(keyword) + 1);
+ strcpy((*tail)->lig, keyword);
+ break; }
+ case ENDCHARMETRICS:
+ cont = false;;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case VVECTOR:
+ keyword = token(fp);
+ keyword = token(fp);
+ break;
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ if ((error == ok) && (count != fi->numOfChars))
+ error = reallocFontMetrics( (void**)&(fi->cmi), &(fi->numOfChars),
+ count, sizeof(CharMetricInfo) );
+
+ if ((error == ok) && (count != fi->numOfChars))
+ error = parseError;
+
+ return(error);
+
+} /* parseCharMetrics */
+
+
+
+/************************* parseTrackKernData ***********************/
+
+/* This function is called by "parseFile". It will parse the AFM File
+ * up to the "EndTrackKern" or "EndKernData" keywords. It will save the
+ * track kerning data if requested by the caller of parseFile.
+ *
+ * parseTrackKernData is passed in a pointer to the FontInfo record.
+ * If data is to be saved, the FontInfo record will already contain
+ * a valid pointer to storage for the track kerning data.
+ *
+ * This function returns an error code specifying whether there was
+ * a premature EOF or a parsing error. This return value is used by
+ * parseFile to determine if there is more file to parse.
+ */
+
+static parseTrackKernData( FILE* fp, register FontInfo* fi)
+{
+ bool cont = true, save = (fi->tkd != NULL);
+ int pos = 0, error = ok, tcount = 0;
+ register char *keyword;
+
+ while (cont)
+ {
+ keyword = token(fp);
+
+ if (keyword == NULL)
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ if (!save)
+ /* get tokens until the end of the Track Kerning Data */
+ /* section without saving any of the data */
+ switch(recognize(keyword))
+ {
+ case ENDTRACKKERN:
+ case ENDKERNDATA:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ default:
+ break;
+ } /* switch */
+ else
+ /* otherwise parse entire Track Kerning Data section, */
+ /* saving the data */
+ switch(recognize(keyword))
+ {
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case TRACKKERN:
+ if (!(tcount < fi->numOfTracks))
+ {
+ reallocFontMetrics( (void**)&(fi->tkd), &(fi->numOfTracks),
+ enlargeCount(fi->numOfTracks), sizeof(TrackKernData) );
+ }
+
+ if (tcount < fi->numOfTracks)
+ {
+ keyword = token(fp);
+ fi->tkd[pos].degree = atoi(keyword);
+ keyword = token(fp);
+ fi->tkd[pos].minPtSize = StringToDouble(keyword);
+ keyword = token(fp);
+ fi->tkd[pos].minKernAmt = StringToDouble(keyword);
+ keyword = token(fp);
+ fi->tkd[pos].maxPtSize = StringToDouble(keyword);
+ keyword = token(fp);
+ fi->tkd[pos++].maxKernAmt = StringToDouble(keyword);
+ tcount++;
+ }
+ else
+ {
+ error = parseError;
+ cont = false;
+ }
+ break;
+ case ENDTRACKKERN:
+ case ENDKERNDATA:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ if (error == ok && tcount != fi->numOfTracks)
+ error = reallocFontMetrics( (void**)&(fi->tkd), &(fi->numOfTracks),
+ tcount, sizeof(TrackKernData) );
+
+ if (error == ok && tcount != fi->numOfTracks)
+ error = parseError;
+
+ return(error);
+
+} /* parseTrackKernData */
+
+
+/************************* parsePairKernData ************************/
+
+/* This function is called by "parseFile". It will parse the AFM File
+ * up to the "EndKernPairs" or "EndKernData" keywords. It will save
+ * the pair kerning data if requested by the caller of parseFile.
+ *
+ * parsePairKernData is passed in a pointer to the FontInfo record.
+ * If data is to be saved, the FontInfo record will already contain
+ * a valid pointer to storage for the pair kerning data.
+ *
+ * This function returns an error code specifying whether there was
+ * a premature EOF or a parsing error. This return value is used by
+ * parseFile to determine if there is more file to parse.
+ */
+
+static parsePairKernData( FILE* fp, register FontInfo* fi)
+{
+ bool cont = true, save = (fi->pkd != NULL);
+ int pos = 0, error = ok, pcount = 0;
+ register char *keyword;
+
+ while (cont)
+ {
+ keyword = token(fp);
+
+ if (keyword == NULL)
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ if (!save)
+ /* get tokens until the end of the Pair Kerning Data */
+ /* section without saving any of the data */
+ switch(recognize(keyword))
+ {
+ case ENDKERNPAIRS:
+ case ENDKERNDATA:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ default:
+ break;
+ } /* switch */
+ else
+ /* otherwise parse entire Pair Kerning Data section, */
+ /* saving the data */
+ switch(recognize(keyword))
+ {
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case KERNPAIR:
+ if (!(pcount < fi->numOfPairs))
+ {
+ reallocFontMetrics( (void**)&(fi->pkd), &(fi->numOfPairs),
+ enlargeCount(fi->numOfPairs), sizeof(PairKernData) );
+ }
+ if (pcount < fi->numOfPairs)
+ {
+ keyword = token(fp);
+ fi->pkd[pos].name1 = strdup( keyword );
+ keyword = token(fp);
+ fi->pkd[pos].name2 = strdup( keyword );
+ keyword = token(fp);
+ fi->pkd[pos].xamt = atoi(keyword);
+ keyword = token(fp);
+ fi->pkd[pos++].yamt = atoi(keyword);
+ pcount++;
+ }
+ else
+ {
+ error = parseError;
+ cont = false;
+ }
+ break;
+ case KERNPAIRXAMT:
+ if (!(pcount < fi->numOfPairs))
+ {
+ reallocFontMetrics( (void**)&(fi->pkd), &(fi->numOfPairs),
+ enlargeCount(fi->numOfPairs), sizeof(PairKernData) );
+ }
+ if (pcount < fi->numOfPairs)
+ {
+ keyword = token(fp);
+ fi->pkd[pos].name1 = strdup( keyword );
+ keyword = token(fp);
+ fi->pkd[pos].name2 = strdup( keyword );
+ keyword = token(fp);
+ fi->pkd[pos++].xamt = atoi(keyword);
+ pcount++;
+ }
+ else
+ {
+ error = parseError;
+ cont = false;
+ }
+ break;
+ case ENDKERNPAIRS:
+ case ENDKERNDATA:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ if ((error == ok) && (pcount != fi->numOfPairs))
+ error = reallocFontMetrics( (void**)&(fi->pkd), &(fi->numOfPairs),
+ pcount, sizeof(PairKernData) );
+
+ if (error == ok && pcount != fi->numOfPairs)
+ error = parseError;
+
+ return(error);
+
+} /* parsePairKernData */
+
+
+/************************* parseCompCharData **************************/
+
+/* This function is called by "parseFile". It will parse the AFM File
+ * up to the "EndComposites" keyword. It will save the composite
+ * character data if requested by the caller of parseFile.
+ *
+ * parseCompCharData is passed in a pointer to the FontInfo record, and
+ * a boolean representing if the data should be saved.
+ *
+ * This function will create the appropriate amount of storage for
+ * the composite character data and store a pointer to the storage
+ * in the FontInfo record.
+ *
+ * This function returns an error code specifying whether there was
+ * a premature EOF or a parsing error. This return value is used by
+ * parseFile to determine if there is more file to parse.
+ */
+
+static parseCompCharData( FILE* fp, register FontInfo* fi)
+{
+ bool cont = true, firstTime = true, save = (fi->ccd != NULL);
+ int pos = 0, j = 0, error = ok, ccount = 0, pcount = 0;
+ register char *keyword;
+
+ while (cont)
+ {
+ keyword = token(fp);
+ if (keyword == NULL)
+ /* Have reached an early and unexpected EOF. */
+ /* Set flag and stop parsing */
+ {
+ error = earlyEOF;
+ break; /* get out of loop */
+ }
+ if (ccount > fi->numOfComps)
+ {
+ reallocFontMetrics( (void**)&(fi->ccd), &(fi->numOfComps),
+ enlargeCount(fi->numOfComps), sizeof(CompCharData) );
+ }
+ if (ccount > fi->numOfComps)
+ {
+ error = parseError;
+ break; /* get out of loop */
+ }
+ if (!save)
+ /* get tokens until the end of the Composite Character info */
+ /* section without saving any of the data */
+ switch(recognize(keyword))
+ {
+ case ENDCOMPOSITES:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case COMMENT:
+ case COMPCHAR:
+ keyword = linetoken(fp);
+ break;
+ default:
+ break;
+ } /* switch */
+ else
+ /* otherwise parse entire Composite Character info section, */
+ /* saving the data */
+ switch(recognize(keyword))
+ {
+ case COMMENT:
+ keyword = linetoken(fp);
+ break;
+ case COMPCHAR:
+ if (!(ccount < fi->numOfComps))
+ {
+ reallocFontMetrics( (void**)&(fi->ccd), &(fi->numOfComps),
+ enlargeCount(fi->numOfComps), sizeof(CompCharData) );
+ }
+ if (ccount < fi->numOfComps)
+ {
+ keyword = token(fp);
+ if (pcount != fi->ccd[pos].numOfPieces)
+ error = parseError;
+ pcount = 0;
+ if (firstTime) firstTime = false;
+ else pos++;
+ fi->ccd[pos].ccName = strdup( keyword );
+ keyword = token(fp);
+ fi->ccd[pos].numOfPieces = atoi(keyword);
+ fi->ccd[pos].pieces = (Pcc *)
+ calloc(fi->ccd[pos].numOfPieces, sizeof(Pcc));
+ j = 0;
+ ccount++;
+ }
+ else
+ {
+ error = parseError;
+ cont = false;
+ }
+ break;
+ case COMPCHARPIECE:
+ if (pcount < fi->ccd[pos].numOfPieces)
+ {
+ keyword = token(fp);
+ fi->ccd[pos].pieces[j].pccName = strdup( keyword );
+ keyword = token(fp);
+ fi->ccd[pos].pieces[j].deltax = atoi(keyword);
+ keyword = token(fp);
+ fi->ccd[pos].pieces[j++].deltay = atoi(keyword);
+ pcount++;
+ }
+ else
+ error = parseError;
+ break;
+ case ENDCOMPOSITES:
+ cont = false;
+ break;
+ case ENDFONTMETRICS:
+ cont = false;
+ error = normalEOF;
+ break;
+ case NOPE:
+ default:
+ error = parseError;
+ break;
+ } /* switch */
+ } /* while */
+
+ if (error == ok && ccount != fi->numOfComps)
+ reallocFontMetrics( (void**)&(fi->ccd), &(fi->numOfComps),
+ ccount, sizeof(CompCharData) );
+
+ if (error == ok && ccount != fi->numOfComps)
+ error = parseError;
+
+ return(error);
+
+} /* parseCompCharData */
+
+
+
+
+/*************************** 'PUBLIC' FUNCTION ********************/
+
+
+/*************************** parseFile *****************************/
+
+/* parseFile is the only 'public' procedure available. It is called
+ * from an application wishing to get information from an AFM file.
+ * The caller of this function is responsible for locating and opening
+ * an AFM file and handling all errors associated with that task.
+ *
+ * parseFile expects 3 parameters: a vaild file pointer, a pointer
+ * to a (FontInfo *) variable (for which storage will be allocated and
+ * the data requested filled in), and a mask specifying which
+ * data from the AFM File should be saved in the FontInfo structure.
+ *
+ * The file will be parsed and the requested data will be stored in
+ * a record of type FontInfo (refer to ParseAFM.h).
+ *
+ * parseFile returns an error code as defined in parseAFM.h.
+ *
+ * The position of the read/write pointer associated with the file
+ * pointer upon return of this function is undefined.
+ */
+
+int parseFile ( FILE* fp, FontInfo** fi, FLAGS flags)
+{
+
+ int code = ok; /* return code from each of the parsing routines */
+ int error = ok; /* used as the return code from this function */
+
+ register char *keyword; /* used to store a token */
+
+
+ /* storage data for the global variable ident */
+ ident = (char *) calloc(MAX_NAME, sizeof(char));
+ if (ident == NULL) {error = storageProblem; return(error);}
+
+ (*fi) = (FontInfo *) calloc(1, sizeof(FontInfo));
+ if ((*fi) == NULL) {error = storageProblem; return(error);}
+
+ if (flags & P_G)
+ {
+ (*fi)->gfi = (GlobalFontInfo *) calloc(1, sizeof(GlobalFontInfo));
+ if ((*fi)->gfi == NULL) {error = storageProblem; return(error);}
+ }
+
+ /* The AFM File begins with Global Font Information. This section */
+ /* will be parsed whether or not information should be saved. */
+ code = parseGlobals(fp, (*fi)->gfi);
+
+ if (code < 0) error = code;
+
+ /* The Global Font Information is followed by the Character Metrics */
+ /* section. Which procedure is used to parse this section depends on */
+ /* how much information should be saved. If all of the metrics info */
+ /* is wanted, parseCharMetrics is called. If only the character widths */
+ /* is wanted, parseCharWidths is called. parseCharWidths will also */
+ /* be called in the case that no character data is to be saved, just */
+ /* to parse through the section. */
+
+ if ((code != normalEOF) && (code != earlyEOF))
+ {
+ (*fi)->numOfChars = atoi(token(fp));
+ if (flags & (P_M ^ P_W))
+ {
+ (*fi)->cmi = (CharMetricInfo *)
+ calloc((*fi)->numOfChars, sizeof(CharMetricInfo));
+ if ((*fi)->cmi == NULL) {error = storageProblem; return(error);}
+ code = parseCharMetrics(fp, *fi);
+ }
+ else
+ {
+ if (flags & P_W)
+ {
+ (*fi)->cwi = (int *) calloc(256, sizeof(int));
+ if ((*fi)->cwi == NULL)
+ {
+ error = storageProblem;
+ return(error);
+ }
+ }
+ /* parse section regardless */
+ code = parseCharWidths(fp, (*fi)->cwi);
+ } /* else */
+ } /* if */
+
+ if ((error != earlyEOF) && (code < 0)) error = code;
+
+ /* The remaining sections of the AFM are optional. This code will */
+ /* look at the next keyword in the file to determine what section */
+ /* is next, and then allocate the appropriate amount of storage */
+ /* for the data (if the data is to be saved) and call the */
+ /* appropriate parsing routine to parse the section. */
+
+ while ((code != normalEOF) && (code != earlyEOF))
+ {
+ keyword = token(fp);
+ if (keyword == NULL)
+ /* Have reached an early and unexpected EOF. */
+ /* Set flag and stop parsing */
+ {
+ code = earlyEOF;
+ break; /* get out of loop */
+ }
+ switch(recognize(keyword))
+ {
+ case STARTKERNDATA:
+ break;
+ case ENDKERNDATA:
+ break;
+ case STARTTRACKKERN:
+ keyword = token(fp);
+ if (flags & P_T)
+ {
+ (*fi)->numOfTracks = atoi(keyword);
+ (*fi)->tkd = (TrackKernData *)
+ calloc((*fi)->numOfTracks, sizeof(TrackKernData));
+ if ((*fi)->tkd == NULL)
+ {
+ error = storageProblem;
+ return(error);
+ }
+ } /* if */
+ code = parseTrackKernData(fp, *fi);
+ break;
+ case STARTKERNPAIRS:
+ keyword = token(fp);
+ if (flags & P_P)
+ {
+ (*fi)->numOfPairs = atoi(keyword);
+ (*fi)->pkd = (PairKernData *)
+ calloc((*fi)->numOfPairs, sizeof(PairKernData));
+ if ((*fi)->pkd == NULL)
+ {
+ error = storageProblem;
+ return(error);
+ }
+ } /* if */
+ code = parsePairKernData(fp, *fi);
+ break;
+ case STARTCOMPOSITES:
+ keyword = token(fp);
+ if (flags & P_C)
+ {
+ (*fi)->numOfComps = atoi(keyword);
+ (*fi)->ccd = (CompCharData *)
+ calloc((*fi)->numOfComps, sizeof(CompCharData));
+ if ((*fi)->ccd == NULL)
+ {
+ error = storageProblem;
+ return(error);
+ }
+ } /* if */
+ code = parseCompCharData(fp, *fi);
+ break;
+ case ENDFONTMETRICS:
+ code = normalEOF;
+ break;
+ case COMMENT:
+ linetoken(fp);
+ break;
+ case NOPE:
+ default:
+ code = parseError;
+ break;
+ } /* switch */
+
+ if ((error != earlyEOF) && (code < 0)) error = code;
+
+ } /* while */
+
+ if ((error != earlyEOF) && (code < 0)) error = code;
+
+ if (ident != NULL) { free(ident); ident = NULL; }
+
+ return(error);
+
+} /* parseFile */
+
+void
+freeFontInfo (FontInfo *fi)
+{
+ int i, j;
+
+ if (fi->gfi)
+ {
+ free (fi->gfi->afmVersion);
+ free (fi->gfi->fontName);
+ free (fi->gfi->fullName);
+ free (fi->gfi->familyName);
+ free (fi->gfi->weight);
+ free (fi->gfi->version);
+ free (fi->gfi->notice);
+ free (fi->gfi->encodingScheme);
+ free (fi->gfi);
+ }
+
+ free (fi->cwi);
+
+ if (fi->cmi)
+ {
+ for (i = 0; i < fi->numOfChars; i++)
+ {
+ Ligature *ligs;
+ free (fi->cmi[i].name);
+ ligs = fi->cmi[i].ligs;
+ while (ligs)
+ {
+ Ligature *tmp;
+ tmp = ligs;
+ ligs = ligs->next;
+ free (tmp->succ);
+ free (tmp->lig);
+ free (tmp);
+ }
+ }
+ free (fi->cmi);
+ }
+
+ free (fi->tkd);
+
+ if (fi->pkd)
+ {
+ for (int i = 0; i < fi->numOfPairs; i++)
+ {
+ free (fi->pkd[i].name1);
+ free (fi->pkd[i].name2);
+ }
+ free (fi->pkd);
+ }
+
+ if (fi->ccd)
+ {
+ for (i = 0; i < fi->numOfComps; i++)
+ {
+ free (fi->ccd[i].ccName);
+ for (j = 0; j < fi->ccd[i].numOfPieces; j++)
+ free (fi->ccd[i].pieces[j].pccName);
+
+ free (fi->ccd[i].pieces);
+ }
+ free (fi->ccd);
+ }
+
+ free (fi);
+}
+
+} // namspace
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