mirror of
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87194855a1
list. This avoids doing two heap allocations for every character, and reduces the metrics parsing time by approx 25%.
442 lines
11 KiB
C
442 lines
11 KiB
C
/*
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* Adobe Font Metric (AFM) file parsing
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* See http://www.adobe.com/supportservice/devrelations/PDFS/TN/5004.AFM_Spec.pdf
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*
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* Copyright 1998 Huw D M Davies
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*
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*/
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#include <string.h>
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#include <stdio.h>
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#include "winnt.h" /* HEAP_ZERO_MEMORY */
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#include "psdrv.h"
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#include "options.h"
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#include "debugtools.h"
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#include "heap.h"
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DEFAULT_DEBUG_CHANNEL(psdrv);
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#include <ctype.h>
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/* ptr to fonts for which we have afm files */
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FONTFAMILY *PSDRV_AFMFontList = NULL;
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/***********************************************************
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*
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* PSDRV_AFMGetCharMetrics
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*
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* Parses CharMetric section of AFM file.
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*
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* Actually only collects the widths of numbered chars and puts then in
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* afm->CharWidths.
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*/
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static void PSDRV_AFMGetCharMetrics(AFM *afm, FILE *fp)
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{
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char line[256], valbuf[256];
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char *cp, *item, *value, *curpos, *endpos;
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int i;
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AFMMETRICS *metric;
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afm->Metrics = metric = HeapAlloc( PSDRV_Heap, HEAP_ZERO_MEMORY,
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afm->NumofMetrics * sizeof(AFMMETRICS) );
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for(i = 0; i < afm->NumofMetrics; i++, metric++) {
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if(!fgets(line, sizeof(line), fp)) {
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ERR("Unexpected EOF\n");
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return;
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}
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cp = line + strlen(line);
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do {
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*cp = '\0';
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cp--;
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} while(cp > line && isspace(*cp));
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curpos = line;
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while(*curpos) {
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item = curpos;
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while(isspace(*item))
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item++;
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value = strpbrk(item, " \t");
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while(isspace(*value))
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value++;
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cp = endpos = strchr(value, ';');
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while(isspace(*--cp))
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;
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memcpy(valbuf, value, cp - value + 1);
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valbuf[cp - value + 1] = '\0';
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value = valbuf;
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if(!strncmp(item, "C ", 2)) {
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value = strchr(item, ' ');
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sscanf(value, " %d", &metric->C);
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} else if(!strncmp(item, "CH ", 3)) {
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value = strrchr(item, ' ');
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sscanf(value, " %x", &metric->C);
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}
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else if(!strncmp("WX ", item, 3) || !strncmp("W0X ", item, 4)) {
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sscanf(value, "%f", &metric->WX);
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if(metric->C >= 0 && metric->C <= 0xff)
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afm->CharWidths[metric->C] = metric->WX;
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}
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else if(!strncmp("N ", item, 2)) {
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strncpy( metric->N, value, sizeof(metric->N) );
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}
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else if(!strncmp("B ", item, 2)) {
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sscanf(value, "%f%f%f%f", &metric->B.llx, &metric->B.lly,
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&metric->B.urx, &metric->B.ury);
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/* Store height of Aring to use as lfHeight */
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if(metric->N && !strncmp(metric->N, "Aring", 5))
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afm->FullAscender = metric->B.ury;
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}
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/* Ligatures go here... */
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curpos = endpos + 1;
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}
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#if 0
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TRACE("Metrics for '%s' WX = %f B = %f,%f - %f,%f\n",
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metric->N, metric->WX, metric->B.llx, metric->B.lly,
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metric->B.urx, metric->B.ury);
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#endif
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}
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return;
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}
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/***********************************************************
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*
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* PSDRV_AFMParse
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*
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* Fills out an AFM structure and associated substructures (see psdrv.h)
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* for a given AFM file. All memory is allocated from the process heap.
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* Returns a ptr to the AFM structure or NULL on error.
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*
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* This is not complete (we don't handle kerning yet) and not efficient
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*/
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static AFM *PSDRV_AFMParse(char const *file)
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{
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FILE *fp;
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char buf[256];
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char *value;
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AFM *afm;
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char *cp;
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TRACE("parsing '%s'\n", file);
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if((fp = fopen(file, "r")) == NULL) {
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MESSAGE("Can't open AFM file '%s'. Please check wine.conf .\n", file);
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return NULL;
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}
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afm = HeapAlloc(PSDRV_Heap, HEAP_ZERO_MEMORY, sizeof(AFM));
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if(!afm) {
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fclose(fp);
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return NULL;
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}
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while(fgets(buf, sizeof(buf), fp)) {
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cp = buf + strlen(buf);
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do {
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*cp = '\0';
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cp--;
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} while(cp > buf && isspace(*cp));
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value = strchr(buf, ' ');
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if(value)
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while(isspace(*value))
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value++;
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if(!strncmp("FontName", buf, 8)) {
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afm->FontName = HEAP_strdupA(PSDRV_Heap, 0, value);
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continue;
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}
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if(!strncmp("FullName", buf, 8)) {
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afm->FullName = HEAP_strdupA(PSDRV_Heap, 0, value);
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continue;
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}
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if(!strncmp("FamilyName", buf, 10)) {
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afm->FamilyName = HEAP_strdupA(PSDRV_Heap, 0, value);
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continue;
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}
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if(!strncmp("Weight", buf, 6)) {
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if(!strncmp("Roman", value, 5) || !strncmp("Medium", value, 6)
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|| !strncmp("Book", value, 4) || !strncmp("Regular", value, 7)
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|| !strncmp("Normal", value, 6))
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afm->Weight = FW_NORMAL;
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else if(!strncmp("Demi", value, 4))
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afm->Weight = FW_DEMIBOLD;
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else if(!strncmp("Bold", value, 4))
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afm->Weight = FW_BOLD;
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else if(!strncmp("Light", value, 5))
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afm->Weight = FW_LIGHT;
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else if(!strncmp("Black", value, 5))
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afm->Weight = FW_BLACK;
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else {
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FIXME("Unkown AFM Weight '%s'\n", value);
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afm->Weight = FW_NORMAL;
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}
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continue;
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}
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if(!strncmp("ItalicAngle", buf, 11)) {
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sscanf(value, "%f", &(afm->ItalicAngle));
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continue;
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}
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if(!strncmp("IsFixedPitch", buf, 12)) {
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if(!strncasecmp("false", value, 5))
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afm->IsFixedPitch = FALSE;
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else
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afm->IsFixedPitch = TRUE;
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continue;
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}
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if(!strncmp("FontBBox", buf, 8)) {
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sscanf(value, "%f %f %f %f", &(afm->FontBBox.llx),
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&(afm->FontBBox.lly), &(afm->FontBBox.urx),
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&(afm->FontBBox.ury) );
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continue;
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}
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if(!strncmp("UnderlinePosition", buf, 17)) {
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sscanf(value, "%f", &(afm->UnderlinePosition) );
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continue;
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}
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if(!strncmp("UnderlineThickness", buf, 18)) {
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sscanf(value, "%f", &(afm->UnderlineThickness) );
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continue;
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}
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if(!strncmp("CapHeight", buf, 9)) {
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sscanf(value, "%f", &(afm->CapHeight) );
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continue;
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}
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if(!strncmp("XHeight", buf, 7)) {
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sscanf(value, "%f", &(afm->XHeight) );
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continue;
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}
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if(!strncmp("Ascender", buf, 8)) {
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sscanf(value, "%f", &(afm->Ascender) );
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continue;
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}
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if(!strncmp("Descender", buf, 9)) {
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sscanf(value, "%f", &(afm->Descender) );
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continue;
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}
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if(!strncmp("StartCharMetrics", buf, 16)) {
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sscanf(value, "%d", &(afm->NumofMetrics) );
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PSDRV_AFMGetCharMetrics(afm, fp);
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continue;
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}
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if(!strncmp("EncodingScheme", buf, 14)) {
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afm->EncodingScheme = HEAP_strdupA(PSDRV_Heap, 0, value);
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continue;
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}
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}
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fclose(fp);
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if(afm->FontName == NULL)
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WARN("%s contains no FontName.\n", file);
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if(afm->FullName == NULL)
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afm->FullName = HEAP_strdupA(PSDRV_Heap, 0, afm->FontName);
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if(afm->FamilyName == NULL)
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afm->FamilyName = HEAP_strdupA(PSDRV_Heap, 0, afm->FontName);
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if(afm->Ascender == 0.0)
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afm->Ascender = afm->FontBBox.ury;
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if(afm->Descender == 0.0)
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afm->Descender = afm->FontBBox.lly;
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if(afm->FullAscender == 0.0)
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afm->FullAscender = afm->Ascender;
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if(afm->Weight == 0)
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afm->Weight = FW_NORMAL;
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return afm;
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}
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/***********************************************************
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*
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* PSDRV_FreeAFMList
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*
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* Frees the family and afmlistentry structures in list head
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*/
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void PSDRV_FreeAFMList( FONTFAMILY *head )
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{
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AFMLISTENTRY *afmle, *nexta;
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FONTFAMILY *family, *nextf;
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for(nextf = family = head; nextf; family = nextf) {
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for(nexta = afmle = family->afmlist; nexta; afmle = nexta) {
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nexta = afmle->next;
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HeapFree( PSDRV_Heap, 0, afmle );
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}
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nextf = family->next;
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HeapFree( PSDRV_Heap, 0, family );
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}
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return;
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}
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/***********************************************************
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*
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* PSDRV_FindAFMinList
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* Returns ptr to an AFM if name (which is a PS font name) exists in list
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* headed by head.
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*/
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AFM *PSDRV_FindAFMinList(FONTFAMILY *head, char *name)
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{
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FONTFAMILY *family;
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AFMLISTENTRY *afmle;
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for(family = head; family; family = family->next) {
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for(afmle = family->afmlist; afmle; afmle = afmle->next) {
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if(!strcmp(afmle->afm->FontName, name))
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return afmle->afm;
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}
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}
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return NULL;
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}
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/***********************************************************
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*
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* PSDRV_AddAFMtoList
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*
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* Adds an afm to the list whose head is pointed to by head. Creates new
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* family node if necessary and always creates a new AFMLISTENTRY.
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*/
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void PSDRV_AddAFMtoList(FONTFAMILY **head, AFM *afm)
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{
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FONTFAMILY *family = *head;
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FONTFAMILY **insert = head;
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AFMLISTENTRY *tmpafmle, *newafmle;
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newafmle = HeapAlloc(PSDRV_Heap, HEAP_ZERO_MEMORY,
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sizeof(*newafmle));
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newafmle->afm = afm;
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while(family) {
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if(!strcmp(family->FamilyName, afm->FamilyName))
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break;
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insert = &(family->next);
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family = family->next;
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}
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if(!family) {
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family = HeapAlloc(PSDRV_Heap, HEAP_ZERO_MEMORY,
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sizeof(*family));
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*insert = family;
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family->FamilyName = HEAP_strdupA(PSDRV_Heap, 0,
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afm->FamilyName);
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family->afmlist = newafmle;
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return;
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}
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tmpafmle = family->afmlist;
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while(tmpafmle->next)
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tmpafmle = tmpafmle->next;
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tmpafmle->next = newafmle;
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return;
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}
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/**********************************************************
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*
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* PSDRV_ReencodeCharWidths
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*
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* Re map the CharWidths field of the afm to correspond to an ANSI encoding
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*
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*/
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static void PSDRV_ReencodeCharWidths(AFM *afm)
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{
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int i, j;
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AFMMETRICS *metric;
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for(i = 0; i < 256; i++) {
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if(isalnum(i))
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continue;
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if(PSDRV_ANSIVector[i] == NULL) {
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afm->CharWidths[i] = 0.0;
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continue;
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}
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for (j = 0, metric = afm->Metrics; j < afm->NumofMetrics; j++, metric++) {
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if(!strcmp(metric->N, PSDRV_ANSIVector[i])) {
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afm->CharWidths[i] = metric->WX;
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break;
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}
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}
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if(j == afm->NumofMetrics) {
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WARN("Couldn't find glyph '%s' in font '%s'\n",
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PSDRV_ANSIVector[i], afm->FontName);
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afm->CharWidths[i] = 0.0;
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}
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}
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return;
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}
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/***********************************************************
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*
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* PSDRV_DumpFontList
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*
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*/
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static void PSDRV_DumpFontList(void)
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{
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FONTFAMILY *family;
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AFMLISTENTRY *afmle;
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for(family = PSDRV_AFMFontList; family; family = family->next) {
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TRACE("Family '%s'\n", family->FamilyName);
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for(afmle = family->afmlist; afmle; afmle = afmle->next) {
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TRACE("\tFontName '%s'\n", afmle->afm->FontName);
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}
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}
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return;
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}
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/***********************************************************
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*
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* PSDRV_GetFontMetrics
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*
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* Only exported function in this file. Parses all afm files listed in
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* [afmfiles] of wine.conf .
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*/
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BOOL PSDRV_GetFontMetrics(void)
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{
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int idx = 0;
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char key[256];
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char value[256];
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while (PROFILE_EnumWineIniString( "afmfiles", idx++, key, sizeof(key), value, sizeof(value)))
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{
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AFM *afm = PSDRV_AFMParse(value);
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if (afm)
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{
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if(afm->EncodingScheme &&
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!strcmp(afm->EncodingScheme, "AdobeStandardEncoding")) {
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PSDRV_ReencodeCharWidths(afm);
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}
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PSDRV_AddAFMtoList(&PSDRV_AFMFontList, afm);
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}
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}
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PSDRV_DumpFontList();
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return TRUE;
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}
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