/* parseAFM.c * * Copyright (c) 1988 Adobe Systems Incorporated. * All Rights Reserved. * * 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 */ #include #include #include #include #include #ifdef unix #include #endif #include #include "parseafm.h" static char *token(FILE *stream); static char *linetoken(FILE *stream); /* static enum parseKey recognize(char *ident); */ static BOOL parseGlobals(FILE *fp, GlobalFontInfo *gfi); static int initializeArray(FILE *fp, int *cwi); static parseCharWidths(FILE *fp, int *cwi); static parseCharMetrics(FILE *fp, FontInfo *fi); static parseTrackKernData(FILE *fp, FontInfo *fi); static parsePairKernData(FILE *fp, FontInfo *fi); static parseCompCharData(FILE *fp, FontInfo *fi); extern int parseFile (FILE *fp, FontInfo **fi, FLAGS flags); #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 initi 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) /*************************** 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. */ static enum parseKey { ASCENDER, CHARBBOX, CODE, COMPCHAR, CAPHEIGHT, COMMENT, DESCENDER, ENCODINGSCHEME, ENDCHARMETRICS, ENDCOMPOSITES, ENDFONTMETRICS, ENDKERNDATA, ENDKERNPAIRS, ENDTRACKKERN, FAMILYNAME, FONTBBOX, FONTNAME, FULLNAME, ISFIXEDPITCH, ITALICANGLE, KERNPAIR, KERNPAIRXAMT, LIGATURE, CHARNAME, NOTICE, COMPCHARPIECE, STARTCHARMETRICS, STARTCOMPOSITES, STARTFONTMETRICS, STARTKERNDATA, STARTKERNPAIRS, STARTTRACKKERN, TRACKKERN, UNDERLINEPOSITION, UNDERLINETHICKNESS, VERSION, XYWIDTH, 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", "B", "C", "CC", "CapHeight", "Comment", "Descender", "EncodingScheme", "EndCharMetrics", "EndComposites", "EndFontMetrics", "EndKernData", "EndKernPairs", "EndTrackKern", "FamilyName", "FontBBox", "FontName", "FullName", "IsFixedPitch", "ItalicAngle", "KP", "KPX", "L", "N", "Notice", "PCC", "StartCharMetrics", "StartComposites", "StartFontMetrics", "StartKernData", "StartKernPairs", "StartTrackKern", "TrackKern", "UnderlinePosition", "UnderlineThickness", "Version", "W", "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 == ',' || ch == '\t' || ch == ';'); idx = 0; while (ch != EOF && ch != ' ' && ch != lineterm && 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) { 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(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, GlobalFontInfo *gfi) { BOOL cont = TRUE, save = (gfi != NULL); int error = ok; 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 (!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 = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->afmVersion, keyword); break; case COMMENT: keyword = linetoken(fp); break; case FONTNAME: keyword = token(fp); gfi->fontName = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->fontName, keyword); break; case ENCODINGSCHEME: keyword = token(fp); gfi->encodingScheme = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->encodingScheme, keyword); break; case FULLNAME: keyword = linetoken(fp); gfi->fullName = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->fullName, keyword); break; case FAMILYNAME: keyword = linetoken(fp); gfi->familyName = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->familyName, keyword); break; case WEIGHT: keyword = token(fp); gfi->weight = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->weight, keyword); break; case ITALICANGLE: keyword = token(fp); gfi->italicAngle = atof(keyword); if (errno == ERANGE) {printf("Range error \n"); error = parseError;} 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 = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->version, keyword); break; case NOTICE: keyword = linetoken(fp); gfi->notice = (char *) calloc(1, 1+strlen(keyword)); strcpy(gfi->notice, 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 DESCENDER: keyword = token(fp); gfi->descender = atoi(keyword); break; case ASCENDER: keyword = token(fp); gfi->ascender = atoi(keyword); break; case STARTCHARMETRICS: cont = FALSE; break; case ENDFONTMETRICS: cont = FALSE; error = normalEOF; break; case NOPE: default: printf("Unrecognized key word {%s} \n",keyword); 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, 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 XWIDTH: width = atoi(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: printf("Unrecognized key (level 1) word {%s} \n",keyword); 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, 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 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 NOPE: default: printf("Unrecognized key (charstuff) word {%s} \n",keyword); error = parseError; break; } /* switch */ } /* while */ return(error); } /* parseCharWidths */ /************************* 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, 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) { if (firstTime) firstTime = FALSE; else temp++; temp->code = atoi(token(fp)); count++; } else { printf("Too many numofchars \n"); error = parseError; cont = FALSE; } break; case XYWIDTH: temp->wx = atoi(token(fp)); temp->wy = atoi(token(fp)); break; case XWIDTH: temp->wx = atoi(token(fp)); break; case CHARNAME: keyword = token(fp); temp->name = (char *) calloc(1, 1+strlen(keyword)); 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 *) calloc(1, strlen(keyword)+1); strcpy((*tail)->succ, keyword); keyword = token(fp); (*tail)->lig = (char *) calloc(1, strlen(keyword)+1); strcpy((*tail)->lig, keyword); /* printf("lig {%s} {%s} \n",(*tail)->lig,(*tail)->succ); printf("ligd {%d} {%d} \n",(*tail)->lig,(*tail)->succ); */ break; } case ENDCHARMETRICS: cont = FALSE;; break; case ENDFONTMETRICS: cont = FALSE; error = normalEOF; break; case NOPE: default: printf("Unrecognized key (Top level) word {%s} \n",keyword); error = parseError; break; } /* switch */ } /* while */ if ((error == ok) && (count != fi->numOfChars)) { printf("wrong num of chars got %d, wanted %d \n",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, 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) { keyword = token(fp); fi->tkd[pos].degree = atoi(keyword); keyword = token(fp); fi->tkd[pos].minPtSize = atof(keyword); if (errno == ERANGE) error = parseError; keyword = token(fp); fi->tkd[pos].minKernAmt = atof(keyword); if (errno == ERANGE) error = parseError; keyword = token(fp); fi->tkd[pos].maxPtSize = atof(keyword); if (errno == ERANGE) error = parseError; keyword = token(fp); fi->tkd[pos++].maxKernAmt = atof(keyword); if (errno == ERANGE) error = parseError; tcount++; } else { printf("Too many tracks \n"); error = parseError; cont = FALSE; } break; case ENDTRACKKERN: case ENDKERNDATA: cont = FALSE; break; case ENDFONTMETRICS: cont = FALSE; error = normalEOF; break; case NOPE: default: printf("Unrecognized key (zzz level) word {%s} \n",keyword); break; } /* switch */ } /* while */ if (error == ok && tcount != fi->numOfTracks) { error = parseError; printf("Wrong num of tracks %d \n",tcount); } 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, 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) { keyword = token(fp); fi->pkd[pos].name1 = (char *) calloc(1,1+ strlen(keyword)); strcpy(fi->pkd[pos].name1, keyword); keyword = token(fp); fi->pkd[pos].name2 = (char *) calloc(1, 1+strlen(keyword)); strcpy(fi->pkd[pos].name2, keyword); keyword = token(fp); fi->pkd[pos].xamt = atoi(keyword); keyword = token(fp); fi->pkd[pos++].yamt = atoi(keyword); pcount++; } else { printf("Too many pairs \n"); error = parseError; cont = FALSE; } break; case KERNPAIRXAMT: if (pcount < fi->numOfPairs) { keyword = token(fp); fi->pkd[pos].name1 = (char *) calloc(1, strlen(keyword)); strcpy(fi->pkd[pos].name1, keyword); keyword = token(fp); fi->pkd[pos].name2 = (char *) calloc(1, 1+strlen(keyword)); strcpy(fi->pkd[pos].name2, keyword); keyword = token(fp); fi->pkd[pos++].xamt = atoi(keyword); pcount++; } else { printf("Too many pairs2 \n"); error = parseError; cont = FALSE; } break; case ENDKERNPAIRS: case ENDKERNDATA: cont = FALSE; break; case ENDFONTMETRICS: cont = FALSE; error = normalEOF; break; case NOPE: default: printf("Unrecognized key (Top level aas) word {%s} \n",keyword); error = parseError; break; } /* switch */ } /* while */ if (error == ok && pcount != fi->numOfPairs) { printf("wrong number of pcountss \n"); 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, 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) { 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; 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) { keyword = token(fp); if (pcount != fi->ccd[pos].numOfPieces) error = parseError; pcount = 0; if (firstTime) firstTime = FALSE; else pos++; fi->ccd[pos].ccName = (char *) calloc(1, 1+strlen(keyword)); strcpy(fi->ccd[pos].ccName, 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 = (char *) calloc(1, 1+strlen(keyword)); strcpy(fi->ccd[pos].pieces[j].pccName, 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) 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. */ extern 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)); (*fi) = (FontInfo *) calloc(1, sizeof(FontInfo)); if (flags & P_G) (*fi)->gfi = (GlobalFontInfo *) calloc(1, sizeof(GlobalFontInfo)); /* 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)); code = parseCharMetrics(fp, *fi); } else { if (flags & P_W) (*fi)->cwi = (int *) calloc(256, sizeof(int)); /* 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 */ 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 */ 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 */ code = parseCompCharData(fp, *fi); break; case ENDFONTMETRICS: code = normalEOF; break; case NOPE: default: code = parseError; break; } /* switch */ if ((error != earlyEOF) && (code < 0)) error = code; } /* while */ if ((error != earlyEOF) && (code < 0)) error = code; return(error); } /* parseFile */