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- /* 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 <stdlib.h>
- #include <stdio.h>
- #include <ctype.h>
- #include <string.h>
- #include <errno.h>
- #ifdef unix
- #include <sys/file.h>
- #endif
- #include <math.h>
- #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 */
-
-
-
-
-
-
-
-
-
-
-