diff options
author | marha <marha@users.sourceforge.net> | 2011-09-12 11:27:51 +0200 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2011-09-12 11:27:51 +0200 |
commit | dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0 (patch) | |
tree | bdf833cc6a4fc9035411779e10dd9e8478201885 /libfontenc/src | |
parent | 0b40f5f4b54453a77f4b09c431f8efc6875da61f (diff) | |
download | vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.tar.gz vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.tar.bz2 vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.zip |
Synchronised line endinge with release branch
Diffstat (limited to 'libfontenc/src')
-rw-r--r-- | libfontenc/src/encparse.c | 1896 |
1 files changed, 948 insertions, 948 deletions
diff --git a/libfontenc/src/encparse.c b/libfontenc/src/encparse.c index ad3b7f067..af65f3219 100644 --- a/libfontenc/src/encparse.c +++ b/libfontenc/src/encparse.c @@ -1,948 +1,948 @@ -/*
-Copyright (c) 1998-2001 by Juliusz Chroboczek
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-
-/* Parser for encoding files */
-
-/* This code assumes that we are using ASCII. We don't use the ctype
- functions, as they depend on the current locale. On the other
- hand, we do use strcasecmp, but only on strings that we've checked
- to be pure ASCII. Bloody ``Code Set Independence''. */
-
-#include <string.h>
-#include <stdio.h>
-
-#if defined(__SCO__) || defined(__UNIXWARE__)
-#include <strings.h>
-#endif
-
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "zlib.h"
-typedef gzFile FontFilePtr;
-#define FontFileGetc(f) gzgetc(f)
-#define FontFileOpen(filename) gzopen(filename, "rb")
-#define FontFileClose(f) gzclose(f)
-
-#define MAXFONTFILENAMELEN 1024
-#define MAXFONTNAMELEN 1024
-
-#include <X11/fonts/fontenc.h>
-#include "fontencI.h"
-
-#define MAXALIASES 20
-
-#define EOF_TOKEN -1
-#define ERROR_TOKEN -2
-#define EOL_TOKEN 0
-#define NUMBER_TOKEN 1
-#define KEYWORD_TOKEN 2
-
-#define EOF_LINE -1
-#define ERROR_LINE -2
-#define STARTENCODING_LINE 1
-#define STARTMAPPING_LINE 2
-#define ENDMAPPING_LINE 3
-#define CODE_LINE 4
-#define CODE_RANGE_LINE 5
-#define CODE_UNDEFINE_LINE 6
-#define NAME_LINE 7
-#define SIZE_LINE 8
-#define ALIAS_LINE 9
-#define FIRSTINDEX_LINE 10
-
-/* Return from lexer */
-#define MAXKEYWORDLEN 100
-
-static long number_value;
-static char keyword_value[MAXKEYWORDLEN+1];
-
-static long value1, value2, value3;
-
-/* Lexer code */
-
-/* Skip to the beginning of new line */
-static void
-skipEndOfLine(FontFilePtr f, int c)
-{
- if(c == 0)
- c = FontFileGetc(f);
-
- for(;;)
- if(c <= 0 || c == '\n')
- return;
- else
- c = FontFileGetc(f);
-}
-
-/* Get a number; we're at the first digit. */
-static unsigned
-getnum(FontFilePtr f, int c, int *cp)
-{
- unsigned n = 0;
- int base = 10;
-
- /* look for `0' or `0x' prefix */
- if(c == '0') {
- c = FontFileGetc(f);
- base = 8;
- if(c == 'x' || c == 'X') {
- base = 16;
- c = FontFileGetc(f);
- }
- }
-
- /* accumulate digits */
- for(;;) {
- if ('0' <= c && c <= '9') {
- n *= base; n += c - '0';
- } else if('a' <= c && c <= 'f') {
- n *= base; n += c - 'a' + 10;
- } else if('A' <=c && c <= 'F') {
- n *= base; n += c - 'A' + 10;
- } else
- break;
- c = FontFileGetc(f);
- }
-
- *cp = c; return n;
-}
-
-/* Skip to beginning of new line; return 1 if only whitespace was found. */
-static int
-endOfLine(FontFilePtr f, int c)
-{
- if(c == 0)
- c = FontFileGetc(f);
-
- for(;;) {
- if(c <= 0 || c == '\n')
- return 1;
- else if(c == '#') {
- skipEndOfLine(f,c);
- return 1;
- }
- else if(c == ' ' || c == '\t') {
- skipEndOfLine(f,c);
- return 0;
- }
- c = FontFileGetc(f);
- }
-}
-
-/* Get a token; we're at first char */
-static int
-gettoken(FontFilePtr f, int c, int *cp)
-{
- char *p;
-
- if(c <= 0)
- c = FontFileGetc(f);
-
- if(c <= 0) {
- return EOF_TOKEN;
- }
-
- while(c == ' ' || c == '\t')
- c = FontFileGetc(f);
-
- if(c=='\n') {
- return EOL_TOKEN;
- } else if(c == '#') {
- skipEndOfLine(f,c);
- return EOL_TOKEN;
- } else if(c >= '0' && c <= '9') {
- number_value = getnum(f,c,cp);
- return NUMBER_TOKEN;
- } else if((c >= 'A' && c <= 'Z') ||
- (c >= 'a' && c <= 'z') ||
- c == '/' || c == '_' || c == '-' || c == '.') {
- p = keyword_value;
- *p++ = c;
- while(p-keyword_value < MAXKEYWORDLEN) {
- c = FontFileGetc(f);
- if(c <= ' ' || c > '~' || c == '#')
- break;
- *p++ = c;
- }
- *cp = c;
- *p = '\0';
- return KEYWORD_TOKEN;
- } else {
- *cp = c;
- return ERROR_TOKEN;
- }
-}
-
-/* Parse a line.
- * Always skips to the beginning of a new line, even if an error occurs */
-static int
-getnextline(FontFilePtr f)
-{
- int c, token;
- c = FontFileGetc(f);
- if(c <= 0)
- return EOF_LINE;
-
- again:
- token=gettoken(f,c,&c);
-
- switch(token) {
- case EOF_TOKEN:
- return EOF_LINE;
- case EOL_TOKEN:
- /* empty line */
- c = FontFileGetc(f);
- goto again;
- case NUMBER_TOKEN:
- value1 = number_value;
- token = gettoken(f,c,&c);
- switch(token) {
- case NUMBER_TOKEN:
- value2 = number_value;
- token = gettoken(f,c,&c);
- switch(token) {
- case NUMBER_TOKEN:
- value3 = number_value;
- return CODE_RANGE_LINE;
- case EOL_TOKEN:
- return CODE_LINE;
- default:
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- case KEYWORD_TOKEN:
- if(!endOfLine(f,c))
- return ERROR_LINE;
- else
- return NAME_LINE;
- default:
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- case KEYWORD_TOKEN:
- if(!strcasecmp(keyword_value, "STARTENCODING")) {
- token = gettoken(f,c,&c);
- if(token == KEYWORD_TOKEN) {
- if(endOfLine(f,c))
- return STARTENCODING_LINE;
- else
- return ERROR_LINE;
- } else {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else if(!strcasecmp(keyword_value, "ALIAS")) {
- token = gettoken(f,c,&c);
- if(token == KEYWORD_TOKEN) {
- if(endOfLine(f,c))
- return ALIAS_LINE;
- else
- return ERROR_LINE;
- } else {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else if(!strcasecmp(keyword_value, "SIZE")) {
- token = gettoken(f,c,&c);
- if(token == NUMBER_TOKEN) {
- value1 = number_value;
- token = gettoken(f,c,&c);
- switch(token) {
- case NUMBER_TOKEN:
- value2 = number_value;
- return SIZE_LINE;
- case EOL_TOKEN:
- value2=0;
- return SIZE_LINE;
- default:
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else if(!strcasecmp(keyword_value, "FIRSTINDEX")) {
- token = gettoken(f,c,&c);
- if(token == NUMBER_TOKEN) {
- value1 = number_value;
- token = gettoken(f,c,&c);
- switch(token) {
- case NUMBER_TOKEN:
- value2 = number_value;
- return FIRSTINDEX_LINE;
- case EOL_TOKEN:
- value2 = 0;
- return FIRSTINDEX_LINE;
- default:
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else if(!strcasecmp(keyword_value, "STARTMAPPING")) {
- keyword_value[0] = 0;
- value1 = 0; value1 = 0;
- /* first a keyword */
- token = gettoken(f,c,&c);
- if(token != KEYWORD_TOKEN) {
- skipEndOfLine(f, c);
- return ERROR_LINE;
- }
-
- /* optional first integer */
- token = gettoken(f,c,&c);
- if(token == NUMBER_TOKEN) {
- value1 = number_value;
- } else if(token == EOL_TOKEN) {
- return STARTMAPPING_LINE;
- } else {
- skipEndOfLine(f, c);
- return ERROR_LINE;
- }
-
- /* optional second integer */
- token = gettoken(f,c,&c);
- if(token == NUMBER_TOKEN) {
- value2 = number_value;
- } else if(token == EOL_TOKEN) {
- return STARTMAPPING_LINE;
- } else {
- skipEndOfLine(f, c);
- return ERROR_LINE;
- }
-
- if(!endOfLine(f,c))
- return ERROR_LINE;
- else {
- return STARTMAPPING_LINE;
- }
- } else if(!strcasecmp(keyword_value, "UNDEFINE")) {
- /* first integer */
- token = gettoken(f,c,&c);
- if(token != NUMBER_TOKEN) {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- value1 = number_value;
- /* optional second integer */
- token = gettoken(f,c,&c);
- if(token == EOL_TOKEN) {
- value2 = value1;
- return CODE_UNDEFINE_LINE;
- } else if(token == NUMBER_TOKEN) {
- value2 = number_value;
- if(endOfLine(f,c)) {
- return CODE_UNDEFINE_LINE;
- } else
- return ERROR_LINE;
- } else {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- } else if(!strcasecmp(keyword_value, "ENDENCODING")) {
- if(endOfLine(f,c))
- return EOF_LINE;
- else
- return ERROR_LINE;
- } else if(!strcasecmp(keyword_value, "ENDMAPPING")) {
- if(endOfLine(f,c))
- return ENDMAPPING_LINE;
- else
- return ERROR_LINE;
- } else {
- skipEndOfLine(f,c);
- return ERROR_LINE;
- }
- default:
- return ERROR_LINE;
- }
-}
-
-static void
-install_mapping(FontEncPtr encoding, FontMapPtr mapping)
-{
- FontMapPtr m;
-
- if(encoding->mappings == NULL)
- encoding->mappings = mapping;
- else {
- m = encoding->mappings;
- while(m->next != NULL)
- m = m->next;
- m->next = mapping;
- }
- mapping->next = NULL;
- mapping->encoding = encoding;
-}
-
-static int
-setCode(unsigned from, unsigned to, unsigned row_size,
- unsigned *first, unsigned *last,
- unsigned *encsize, unsigned short **enc)
-{
- unsigned index, i;
- unsigned short *newenc;
-
- if(from>0xFFFF)
- return 0; /* success */
-
- if(row_size==0)
- index=from;
- else {
- if((value1 & 0xFF) >= row_size)
- return 0; /* ignore out of range mappings */
- index = (from>>8) * row_size + (from&0xFF);
- }
-
- /* Optimize away useless identity mappings. This is only expected
- to be useful with linear encodings. */
- if(index == to && (index < *first || index > *last))
- return 0;
- if(*encsize == 0) {
- *encsize = (index < 256) ? 256 : 0x10000;
- *enc = malloc((*encsize) * sizeof(unsigned short));
- if(*enc == NULL) {
- *encsize = 0;
- return 1;
- }
- } else if(*encsize <= index) {
- *encsize = 0x10000;
- if((newenc = realloc(enc, *encsize))==NULL)
- return 1;
- *enc = newenc;
- }
- if(*first > *last) {
- *first = *last = index;
- }
- if(index < *first) {
- for(i = index; i < *first; i++)
- (*enc)[i] = i;
- *first = index;
- }
- if(index > *last) {
- for(i = *last + 1; i <= index; i++)
- (*enc)[i] = i;
- *last = index;
- }
- (*enc)[index] = to;
- return 0;
-}
-
-/* Parser. If headerOnly is true, we're only interested in the
- data contained in the encoding file's header. */
-
-/* As font encodings are currently never freed, the allocations done
- by this function are mostly its private business. Note, however,
- that FontEncIdentify needs to free the header fields -- so if you
- change this function, you may need to change FontEncIdentify. */
-
-/* I want a garbage collector. */
-
-static FontEncPtr
-parseEncodingFile(FontFilePtr f, int headerOnly)
-{
- int line;
-
- unsigned short *enc=NULL;
- char **nam = NULL, **newnam;
- unsigned i, first = 0xFFFF, last=0, encsize=0, namsize=0;
- FontEncPtr encoding = NULL;
- FontMapPtr mapping = NULL;
- FontEncSimpleMapPtr sm;
- FontEncSimpleNamePtr sn;
- char *aliases[MAXALIASES];
- int numaliases=0;
-
-#if 0
- /* GCC complains about unused labels. Please fix GCC rather than
- obfuscating my code. */
- no_encoding:
-#endif
- line = getnextline(f);
- switch(line) {
- case EOF_LINE:
- goto error;
- case STARTENCODING_LINE:
- encoding = malloc(sizeof(FontEncRec));
- if(encoding == NULL)
- goto error;
- encoding->name = strdup(keyword_value);
- if(encoding->name == NULL)
- goto error;
- encoding->size = 256;
- encoding->row_size = 0;
- encoding->mappings = NULL;
- encoding->next = NULL;
- encoding->first = encoding->first_col=0;
- goto no_mapping;
- default:
- goto error;
- }
-
- no_mapping:
- line = getnextline(f);
- switch(line) {
- case EOF_LINE: goto done;
- case ALIAS_LINE:
- if(numaliases < MAXALIASES) {
- aliases[numaliases] = strdup(keyword_value);
- if(aliases[numaliases] == NULL)
- goto error;
- numaliases++;
- }
- goto no_mapping;
- case SIZE_LINE:
- encoding->size = value1;
- encoding->row_size = value2;
- goto no_mapping;
- case FIRSTINDEX_LINE:
- encoding->first = value1;
- encoding->first_col = value2;
- goto no_mapping;
- case STARTMAPPING_LINE:
- if(headerOnly)
- goto done;
- if(!strcasecmp(keyword_value, "unicode")) {
- mapping = malloc(sizeof(FontMapRec));
- if(mapping == NULL)
- goto error;
- mapping->type = FONT_ENCODING_UNICODE;
- mapping->pid = 0;
- mapping->eid = 0;
- mapping->recode = NULL;
- mapping->name = NULL;
- mapping->client_data = NULL;
- mapping->next = NULL;
- goto mapping;
- } else if(!strcasecmp(keyword_value, "cmap")) {
- mapping = malloc(sizeof(FontMapRec));
- if(mapping == NULL)
- goto error;
- mapping->type = FONT_ENCODING_TRUETYPE;
- mapping->pid = value1;
- mapping->eid = value2;
- mapping->recode = NULL;
- mapping->name = NULL;
- mapping->client_data = NULL;
- mapping->next = NULL;
- goto mapping;
- } else if(!strcasecmp(keyword_value, "postscript")) {
- mapping = malloc(sizeof(FontMapRec));
- if(mapping == NULL)
- goto error;
- mapping->type = FONT_ENCODING_POSTSCRIPT;
- mapping->pid = 0;
- mapping->eid = 0;
- mapping->recode = NULL;
- mapping->name = NULL;
- mapping->client_data = NULL;
- mapping->next = NULL;
- goto string_mapping;
- } else { /* unknown mapping type -- ignore */
- goto skipmapping;
- }
- /* NOTREACHED */
- goto error;
- default: goto no_mapping; /* ignore unknown lines */
- }
-
- skipmapping:
- line = getnextline(f);
- switch(line) {
- case ENDMAPPING_LINE:
- goto no_mapping;
- case EOF_LINE:
- goto error;
- default:
- goto skipmapping;
- }
-
- mapping:
- line = getnextline(f);
- switch(line) {
- case EOF_LINE: goto error;
- case ENDMAPPING_LINE:
- mapping->recode = FontEncSimpleRecode;
- mapping->name = FontEncUndefinedName;
- mapping->client_data = sm = malloc(sizeof(FontEncSimpleMapRec));
- if(sm == NULL)
- goto error;
- sm->row_size = encoding->row_size;
- if(first <= last) {
- unsigned short *newmap;
-
- sm->first = first;
- sm->len=last-first+1;
- newmap = malloc(sm->len * sizeof(unsigned short));
- if(newmap == NULL) {
- free(sm);
- mapping->client_data = sm = NULL;
- goto error;
- }
- for(i=0; i < sm->len; i++)
- newmap[i] = enc[first+i];
- sm->map = newmap;
- } else {
- sm->first = 0;
- sm->len = 0;
- sm->map = NULL;
- }
- install_mapping(encoding, mapping);
- mapping = NULL;
- first = 0xFFFF; last=0;
- goto no_mapping;
-
- case CODE_LINE:
- if(setCode(value1, value2, encoding->row_size,
- &first, &last, &encsize, &enc))
- goto error;
- goto mapping;
-
- case CODE_RANGE_LINE:
- if(value1 > 0x10000)
- value1 = 0x10000;
- if(value2 > 0x10000)
- value2 = 0x10000;
- if(value2 < value1)
- goto mapping;
- /* Do the last value first to avoid having to realloc() */
- if(setCode(value2, value3+(value2-value1), encoding->row_size,
- &first, &last, &encsize, &enc))
- goto error;
- for(i=value1; i<value2; i++) {
- if(setCode(i, value3+(i-value1), encoding->row_size,
- &first, &last, &encsize, &enc))
- goto error;
- }
- goto mapping;
-
- case CODE_UNDEFINE_LINE:
- if(value1 > 0x10000)
- value1 = 0x10000;
- if(value2 > 0x10000)
- value2 = 0x10000;
- if(value2 < value1)
- goto mapping;
- /* Do the last value first to avoid having to realloc() */
- if(setCode(value2, 0, encoding->row_size,
- &first, &last, &encsize, &enc))
- goto error;
- for(i = value1; i < value2; i++) {
- if(setCode(i, 0, encoding->row_size,
- &first, &last, &encsize, &enc))
- goto error;
- }
- goto mapping;
-
- default: goto mapping; /* ignore unknown lines */
- }
-
- string_mapping:
- line = getnextline(f);
- switch(line) {
- case EOF_LINE: goto error;
- case ENDMAPPING_LINE:
- mapping->recode = FontEncUndefinedRecode;
- mapping->name = FontEncSimpleName;
- mapping->client_data = sn = malloc(sizeof(FontEncSimpleNameRec));
- if(sn == NULL)
- goto error;
- if(first > last) {
- free(sn);
- mapping->client_data = sn = NULL;
- goto error;
- }
- sn->first = first;
- sn->len = last - first + 1;
- sn->map = malloc(sn->len*sizeof(char*));
- if(sn->map == NULL) {
- free(sn);
- mapping->client_data = sn = NULL;
- goto error;
- }
- for(i = 0; i < sn->len; i++)
- sn->map[i] = nam[first+i];
- install_mapping(encoding,mapping);
- mapping = NULL;
- first = 0xFFFF; last=0;
- goto no_mapping;
- case NAME_LINE:
- if(value1 >= 0x10000) goto string_mapping;
- if(namsize == 0) {
- namsize = (value1) < 256 ? 256 : 0x10000;
- nam = malloc(namsize * sizeof(char*));
- if(nam == NULL) {
- namsize=0;
- goto error;
- }
- } else if(namsize <= value1) {
- namsize = 0x10000;
- if((newnam = (char**)realloc(nam, namsize)) == NULL)
- goto error;
- nam = newnam;
- }
- if(first > last) {
- first = last = value1;
- }
- if(value1 < first) {
- for(i = value1; i < first; i++)
- nam[i] = NULL;
- first = value1;
- }
- if(value1 > last) {
- for(i=last+1; i <= value1; i++)
- nam[i]=NULL;
- last = value1;
- }
- nam[value1] = strdup(keyword_value);
- if(nam[value1] == NULL) {
- goto error;
- }
- goto string_mapping;
-
- default: goto string_mapping; /* ignore unknown lines */
- }
-
- done:
- if(encsize) free(enc); encsize=0; enc = NULL;
- if(namsize) free(nam); namsize=0; nam = NULL; /* don't free entries! */
-
- encoding->aliases=NULL;
- if(numaliases) {
- encoding->aliases = malloc((numaliases+1)*sizeof(char*));
- if(encoding->aliases == NULL)
- goto error;
- for(i=0; i<numaliases; i++)
- encoding->aliases[i] = aliases[i];
- encoding->aliases[numaliases]=NULL;
- }
-
- return encoding;
-
-error:
- if(encsize) free(enc); encsize=0;
- if(namsize) {
- for(i = first; i <= last; i++)
- free(nam[i]);
- free(nam);
- }
- if(mapping) {
- free(mapping->client_data);
- free(mapping);
- }
- if(encoding) {
- FontMapPtr nextmap;
- free(encoding->name);
- for (mapping = encoding->mappings; mapping; mapping = nextmap) {
- free(mapping->client_data);
- nextmap = mapping->next;
- free(mapping);
- }
- free(encoding);
- }
- for(i = 0; i < numaliases; i++)
- free(aliases[i]);
- /* We don't need to free sn and sm as they handled locally in the body.*/
- return NULL;
-}
-
-char*
-FontEncDirectory(void)
-{
- static char* dir = NULL;
-
- if(dir == NULL) {
- char *c = getenv("FONT_ENCODINGS_DIRECTORY");
- if(c) {
- dir = strdup(c);
- if(!dir)
- return NULL;
- } else {
- dir = FONT_ENCODINGS_DIRECTORY;
- }
- }
- return dir;
-}
-
-static void
-parseFontFileName(const char *fontFileName, char *buf, char *dir)
-{
- const char *p;
- char *q, *lastslash;
-
- for(p = fontFileName, q = dir, lastslash = NULL; *p; p++, q++) {
- *q = *p;
- if(*p == '/')
- lastslash = q+1;
- }
-
- if(!lastslash)
- lastslash = dir;
-
- *lastslash = '\0';
-
- if(buf && strlen(dir) + 14 < MAXFONTFILENAMELEN) {
- strcpy(buf, dir);
- strcat(buf, "encodings.dir");
- }
-}
-
-static FontEncPtr
-FontEncReallyReallyLoad(const char *charset,
- const char *dirname, const char *dir)
-{
- FontFilePtr f;
- FILE *file;
- FontEncPtr encoding;
- char file_name[MAXFONTFILENAMELEN], encoding_name[MAXFONTNAMELEN],
- buf[MAXFONTFILENAMELEN];
- int count, n;
- static char format[24] = "";
-
- /* As we don't really expect to open encodings that often, we don't
- take the trouble of caching encodings directories. */
-
- if((file = fopen(dirname, "r")) == NULL) {
- return NULL;
- }
-
- count = fscanf(file, "%d\n", &n);
- if(count == EOF || count != 1) {
- fclose(file);
- return NULL;
- }
-
- encoding = NULL;
- if (!format[0]) {
- sprintf(format, "%%%ds %%%d[^\n]\n", (int)sizeof(encoding_name) - 1,
- (int)sizeof(file_name) - 1);
- }
- for(;;) {
- count = fscanf(file, format, encoding_name, file_name);
- if(count == EOF)
- break;
- if(count != 2)
- break;
-
- if(!strcasecmp(encoding_name, charset)) {
- /* Found it */
- if(file_name[0] != '/') {
- if(strlen(dir) + strlen(file_name) >= MAXFONTFILENAMELEN) {
- fclose(file);
- return NULL;
- }
- strcpy(buf, dir);
- strcat(buf, file_name);
- } else {
- strcpy(buf , file_name);
- }
-
- f = FontFileOpen(buf);
- if(f == NULL) {
- fclose(file);
- return NULL;
- }
- encoding = parseEncodingFile(f, 0);
- FontFileClose(f);
- break;
- }
- }
-
- fclose(file);
-
- return encoding;
-}
-
-/* Parser ntrypoint -- used by FontEncLoad */
-FontEncPtr
-FontEncReallyLoad(const char *charset, const char *fontFileName)
-{
- FontEncPtr encoding;
- char dir[MAXFONTFILENAMELEN], dirname[MAXFONTFILENAMELEN];
- char *d;
-
- if(fontFileName) {
- parseFontFileName(fontFileName, dirname, dir);
- encoding = FontEncReallyReallyLoad(charset, dirname, dir);
- if(encoding)
- return(encoding);
- }
-
- d = FontEncDirectory();
- if(d) {
- parseFontFileName(d, NULL, dir);
- encoding = FontEncReallyReallyLoad(charset, d, dir);
- return encoding;
- }
-
- return NULL;
-}
-
-/* Return a NULL-terminated array of encoding names. Note that this
- * function has incestuous knowledge of the allocations done by
- * parseEncodingFile. */
-
-char **
-FontEncIdentify(const char *fileName)
-{
- FontFilePtr f;
- FontEncPtr encoding;
- char **names, **name, **alias;
- int numaliases;
-
- if((f = FontFileOpen(fileName))==NULL) {
- return NULL;
- }
- encoding = parseEncodingFile(f, 1);
- FontFileClose(f);
-
- if(!encoding)
- return NULL;
-
- numaliases = 0;
- if(encoding->aliases)
- for(alias = encoding->aliases; *alias; alias++)
- numaliases++;
-
- names = malloc((numaliases+2)*sizeof(char*));
- if(names == NULL) {
- free(encoding->aliases);
- free(encoding);
- return NULL;
- }
-
- name = names;
- *(name++) = encoding->name;
- if(numaliases > 0)
- for(alias = encoding->aliases; *alias; alias++, name++)
- *name = *alias;
-
- *name = NULL;
- free(encoding->aliases);
- free(encoding);
-
- return names;
-}
+/* +Copyright (c) 1998-2001 by Juliusz Chroboczek + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +/* Parser for encoding files */ + +/* This code assumes that we are using ASCII. We don't use the ctype + functions, as they depend on the current locale. On the other + hand, we do use strcasecmp, but only on strings that we've checked + to be pure ASCII. Bloody ``Code Set Independence''. */ + +#include <string.h> +#include <stdio.h> + +#if defined(__SCO__) || defined(__UNIXWARE__) +#include <strings.h> +#endif + +#include <stdlib.h> +#include <unistd.h> + +#include "zlib.h" +typedef gzFile FontFilePtr; +#define FontFileGetc(f) gzgetc(f) +#define FontFileOpen(filename) gzopen(filename, "rb") +#define FontFileClose(f) gzclose(f) + +#define MAXFONTFILENAMELEN 1024 +#define MAXFONTNAMELEN 1024 + +#include <X11/fonts/fontenc.h> +#include "fontencI.h" + +#define MAXALIASES 20 + +#define EOF_TOKEN -1 +#define ERROR_TOKEN -2 +#define EOL_TOKEN 0 +#define NUMBER_TOKEN 1 +#define KEYWORD_TOKEN 2 + +#define EOF_LINE -1 +#define ERROR_LINE -2 +#define STARTENCODING_LINE 1 +#define STARTMAPPING_LINE 2 +#define ENDMAPPING_LINE 3 +#define CODE_LINE 4 +#define CODE_RANGE_LINE 5 +#define CODE_UNDEFINE_LINE 6 +#define NAME_LINE 7 +#define SIZE_LINE 8 +#define ALIAS_LINE 9 +#define FIRSTINDEX_LINE 10 + +/* Return from lexer */ +#define MAXKEYWORDLEN 100 + +static long number_value; +static char keyword_value[MAXKEYWORDLEN+1]; + +static long value1, value2, value3; + +/* Lexer code */ + +/* Skip to the beginning of new line */ +static void +skipEndOfLine(FontFilePtr f, int c) +{ + if(c == 0) + c = FontFileGetc(f); + + for(;;) + if(c <= 0 || c == '\n') + return; + else + c = FontFileGetc(f); +} + +/* Get a number; we're at the first digit. */ +static unsigned +getnum(FontFilePtr f, int c, int *cp) +{ + unsigned n = 0; + int base = 10; + + /* look for `0' or `0x' prefix */ + if(c == '0') { + c = FontFileGetc(f); + base = 8; + if(c == 'x' || c == 'X') { + base = 16; + c = FontFileGetc(f); + } + } + + /* accumulate digits */ + for(;;) { + if ('0' <= c && c <= '9') { + n *= base; n += c - '0'; + } else if('a' <= c && c <= 'f') { + n *= base; n += c - 'a' + 10; + } else if('A' <=c && c <= 'F') { + n *= base; n += c - 'A' + 10; + } else + break; + c = FontFileGetc(f); + } + + *cp = c; return n; +} + +/* Skip to beginning of new line; return 1 if only whitespace was found. */ +static int +endOfLine(FontFilePtr f, int c) +{ + if(c == 0) + c = FontFileGetc(f); + + for(;;) { + if(c <= 0 || c == '\n') + return 1; + else if(c == '#') { + skipEndOfLine(f,c); + return 1; + } + else if(c == ' ' || c == '\t') { + skipEndOfLine(f,c); + return 0; + } + c = FontFileGetc(f); + } +} + +/* Get a token; we're at first char */ +static int +gettoken(FontFilePtr f, int c, int *cp) +{ + char *p; + + if(c <= 0) + c = FontFileGetc(f); + + if(c <= 0) { + return EOF_TOKEN; + } + + while(c == ' ' || c == '\t') + c = FontFileGetc(f); + + if(c=='\n') { + return EOL_TOKEN; + } else if(c == '#') { + skipEndOfLine(f,c); + return EOL_TOKEN; + } else if(c >= '0' && c <= '9') { + number_value = getnum(f,c,cp); + return NUMBER_TOKEN; + } else if((c >= 'A' && c <= 'Z') || + (c >= 'a' && c <= 'z') || + c == '/' || c == '_' || c == '-' || c == '.') { + p = keyword_value; + *p++ = c; + while(p-keyword_value < MAXKEYWORDLEN) { + c = FontFileGetc(f); + if(c <= ' ' || c > '~' || c == '#') + break; + *p++ = c; + } + *cp = c; + *p = '\0'; + return KEYWORD_TOKEN; + } else { + *cp = c; + return ERROR_TOKEN; + } +} + +/* Parse a line. + * Always skips to the beginning of a new line, even if an error occurs */ +static int +getnextline(FontFilePtr f) +{ + int c, token; + c = FontFileGetc(f); + if(c <= 0) + return EOF_LINE; + + again: + token=gettoken(f,c,&c); + + switch(token) { + case EOF_TOKEN: + return EOF_LINE; + case EOL_TOKEN: + /* empty line */ + c = FontFileGetc(f); + goto again; + case NUMBER_TOKEN: + value1 = number_value; + token = gettoken(f,c,&c); + switch(token) { + case NUMBER_TOKEN: + value2 = number_value; + token = gettoken(f,c,&c); + switch(token) { + case NUMBER_TOKEN: + value3 = number_value; + return CODE_RANGE_LINE; + case EOL_TOKEN: + return CODE_LINE; + default: + skipEndOfLine(f,c); + return ERROR_LINE; + } + case KEYWORD_TOKEN: + if(!endOfLine(f,c)) + return ERROR_LINE; + else + return NAME_LINE; + default: + skipEndOfLine(f,c); + return ERROR_LINE; + } + case KEYWORD_TOKEN: + if(!strcasecmp(keyword_value, "STARTENCODING")) { + token = gettoken(f,c,&c); + if(token == KEYWORD_TOKEN) { + if(endOfLine(f,c)) + return STARTENCODING_LINE; + else + return ERROR_LINE; + } else { + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else if(!strcasecmp(keyword_value, "ALIAS")) { + token = gettoken(f,c,&c); + if(token == KEYWORD_TOKEN) { + if(endOfLine(f,c)) + return ALIAS_LINE; + else + return ERROR_LINE; + } else { + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else if(!strcasecmp(keyword_value, "SIZE")) { + token = gettoken(f,c,&c); + if(token == NUMBER_TOKEN) { + value1 = number_value; + token = gettoken(f,c,&c); + switch(token) { + case NUMBER_TOKEN: + value2 = number_value; + return SIZE_LINE; + case EOL_TOKEN: + value2=0; + return SIZE_LINE; + default: + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else { + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else if(!strcasecmp(keyword_value, "FIRSTINDEX")) { + token = gettoken(f,c,&c); + if(token == NUMBER_TOKEN) { + value1 = number_value; + token = gettoken(f,c,&c); + switch(token) { + case NUMBER_TOKEN: + value2 = number_value; + return FIRSTINDEX_LINE; + case EOL_TOKEN: + value2 = 0; + return FIRSTINDEX_LINE; + default: + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else { + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else if(!strcasecmp(keyword_value, "STARTMAPPING")) { + keyword_value[0] = 0; + value1 = 0; value1 = 0; + /* first a keyword */ + token = gettoken(f,c,&c); + if(token != KEYWORD_TOKEN) { + skipEndOfLine(f, c); + return ERROR_LINE; + } + + /* optional first integer */ + token = gettoken(f,c,&c); + if(token == NUMBER_TOKEN) { + value1 = number_value; + } else if(token == EOL_TOKEN) { + return STARTMAPPING_LINE; + } else { + skipEndOfLine(f, c); + return ERROR_LINE; + } + + /* optional second integer */ + token = gettoken(f,c,&c); + if(token == NUMBER_TOKEN) { + value2 = number_value; + } else if(token == EOL_TOKEN) { + return STARTMAPPING_LINE; + } else { + skipEndOfLine(f, c); + return ERROR_LINE; + } + + if(!endOfLine(f,c)) + return ERROR_LINE; + else { + return STARTMAPPING_LINE; + } + } else if(!strcasecmp(keyword_value, "UNDEFINE")) { + /* first integer */ + token = gettoken(f,c,&c); + if(token != NUMBER_TOKEN) { + skipEndOfLine(f,c); + return ERROR_LINE; + } + value1 = number_value; + /* optional second integer */ + token = gettoken(f,c,&c); + if(token == EOL_TOKEN) { + value2 = value1; + return CODE_UNDEFINE_LINE; + } else if(token == NUMBER_TOKEN) { + value2 = number_value; + if(endOfLine(f,c)) { + return CODE_UNDEFINE_LINE; + } else + return ERROR_LINE; + } else { + skipEndOfLine(f,c); + return ERROR_LINE; + } + } else if(!strcasecmp(keyword_value, "ENDENCODING")) { + if(endOfLine(f,c)) + return EOF_LINE; + else + return ERROR_LINE; + } else if(!strcasecmp(keyword_value, "ENDMAPPING")) { + if(endOfLine(f,c)) + return ENDMAPPING_LINE; + else + return ERROR_LINE; + } else { + skipEndOfLine(f,c); + return ERROR_LINE; + } + default: + return ERROR_LINE; + } +} + +static void +install_mapping(FontEncPtr encoding, FontMapPtr mapping) +{ + FontMapPtr m; + + if(encoding->mappings == NULL) + encoding->mappings = mapping; + else { + m = encoding->mappings; + while(m->next != NULL) + m = m->next; + m->next = mapping; + } + mapping->next = NULL; + mapping->encoding = encoding; +} + +static int +setCode(unsigned from, unsigned to, unsigned row_size, + unsigned *first, unsigned *last, + unsigned *encsize, unsigned short **enc) +{ + unsigned index, i; + unsigned short *newenc; + + if(from>0xFFFF) + return 0; /* success */ + + if(row_size==0) + index=from; + else { + if((value1 & 0xFF) >= row_size) + return 0; /* ignore out of range mappings */ + index = (from>>8) * row_size + (from&0xFF); + } + + /* Optimize away useless identity mappings. This is only expected + to be useful with linear encodings. */ + if(index == to && (index < *first || index > *last)) + return 0; + if(*encsize == 0) { + *encsize = (index < 256) ? 256 : 0x10000; + *enc = malloc((*encsize) * sizeof(unsigned short)); + if(*enc == NULL) { + *encsize = 0; + return 1; + } + } else if(*encsize <= index) { + *encsize = 0x10000; + if((newenc = realloc(enc, *encsize))==NULL) + return 1; + *enc = newenc; + } + if(*first > *last) { + *first = *last = index; + } + if(index < *first) { + for(i = index; i < *first; i++) + (*enc)[i] = i; + *first = index; + } + if(index > *last) { + for(i = *last + 1; i <= index; i++) + (*enc)[i] = i; + *last = index; + } + (*enc)[index] = to; + return 0; +} + +/* Parser. If headerOnly is true, we're only interested in the + data contained in the encoding file's header. */ + +/* As font encodings are currently never freed, the allocations done + by this function are mostly its private business. Note, however, + that FontEncIdentify needs to free the header fields -- so if you + change this function, you may need to change FontEncIdentify. */ + +/* I want a garbage collector. */ + +static FontEncPtr +parseEncodingFile(FontFilePtr f, int headerOnly) +{ + int line; + + unsigned short *enc=NULL; + char **nam = NULL, **newnam; + unsigned i, first = 0xFFFF, last=0, encsize=0, namsize=0; + FontEncPtr encoding = NULL; + FontMapPtr mapping = NULL; + FontEncSimpleMapPtr sm; + FontEncSimpleNamePtr sn; + char *aliases[MAXALIASES]; + int numaliases=0; + +#if 0 + /* GCC complains about unused labels. Please fix GCC rather than + obfuscating my code. */ + no_encoding: +#endif + line = getnextline(f); + switch(line) { + case EOF_LINE: + goto error; + case STARTENCODING_LINE: + encoding = malloc(sizeof(FontEncRec)); + if(encoding == NULL) + goto error; + encoding->name = strdup(keyword_value); + if(encoding->name == NULL) + goto error; + encoding->size = 256; + encoding->row_size = 0; + encoding->mappings = NULL; + encoding->next = NULL; + encoding->first = encoding->first_col=0; + goto no_mapping; + default: + goto error; + } + + no_mapping: + line = getnextline(f); + switch(line) { + case EOF_LINE: goto done; + case ALIAS_LINE: + if(numaliases < MAXALIASES) { + aliases[numaliases] = strdup(keyword_value); + if(aliases[numaliases] == NULL) + goto error; + numaliases++; + } + goto no_mapping; + case SIZE_LINE: + encoding->size = value1; + encoding->row_size = value2; + goto no_mapping; + case FIRSTINDEX_LINE: + encoding->first = value1; + encoding->first_col = value2; + goto no_mapping; + case STARTMAPPING_LINE: + if(headerOnly) + goto done; + if(!strcasecmp(keyword_value, "unicode")) { + mapping = malloc(sizeof(FontMapRec)); + if(mapping == NULL) + goto error; + mapping->type = FONT_ENCODING_UNICODE; + mapping->pid = 0; + mapping->eid = 0; + mapping->recode = NULL; + mapping->name = NULL; + mapping->client_data = NULL; + mapping->next = NULL; + goto mapping; + } else if(!strcasecmp(keyword_value, "cmap")) { + mapping = malloc(sizeof(FontMapRec)); + if(mapping == NULL) + goto error; + mapping->type = FONT_ENCODING_TRUETYPE; + mapping->pid = value1; + mapping->eid = value2; + mapping->recode = NULL; + mapping->name = NULL; + mapping->client_data = NULL; + mapping->next = NULL; + goto mapping; + } else if(!strcasecmp(keyword_value, "postscript")) { + mapping = malloc(sizeof(FontMapRec)); + if(mapping == NULL) + goto error; + mapping->type = FONT_ENCODING_POSTSCRIPT; + mapping->pid = 0; + mapping->eid = 0; + mapping->recode = NULL; + mapping->name = NULL; + mapping->client_data = NULL; + mapping->next = NULL; + goto string_mapping; + } else { /* unknown mapping type -- ignore */ + goto skipmapping; + } + /* NOTREACHED */ + goto error; + default: goto no_mapping; /* ignore unknown lines */ + } + + skipmapping: + line = getnextline(f); + switch(line) { + case ENDMAPPING_LINE: + goto no_mapping; + case EOF_LINE: + goto error; + default: + goto skipmapping; + } + + mapping: + line = getnextline(f); + switch(line) { + case EOF_LINE: goto error; + case ENDMAPPING_LINE: + mapping->recode = FontEncSimpleRecode; + mapping->name = FontEncUndefinedName; + mapping->client_data = sm = malloc(sizeof(FontEncSimpleMapRec)); + if(sm == NULL) + goto error; + sm->row_size = encoding->row_size; + if(first <= last) { + unsigned short *newmap; + + sm->first = first; + sm->len=last-first+1; + newmap = malloc(sm->len * sizeof(unsigned short)); + if(newmap == NULL) { + free(sm); + mapping->client_data = sm = NULL; + goto error; + } + for(i=0; i < sm->len; i++) + newmap[i] = enc[first+i]; + sm->map = newmap; + } else { + sm->first = 0; + sm->len = 0; + sm->map = NULL; + } + install_mapping(encoding, mapping); + mapping = NULL; + first = 0xFFFF; last=0; + goto no_mapping; + + case CODE_LINE: + if(setCode(value1, value2, encoding->row_size, + &first, &last, &encsize, &enc)) + goto error; + goto mapping; + + case CODE_RANGE_LINE: + if(value1 > 0x10000) + value1 = 0x10000; + if(value2 > 0x10000) + value2 = 0x10000; + if(value2 < value1) + goto mapping; + /* Do the last value first to avoid having to realloc() */ + if(setCode(value2, value3+(value2-value1), encoding->row_size, + &first, &last, &encsize, &enc)) + goto error; + for(i=value1; i<value2; i++) { + if(setCode(i, value3+(i-value1), encoding->row_size, + &first, &last, &encsize, &enc)) + goto error; + } + goto mapping; + + case CODE_UNDEFINE_LINE: + if(value1 > 0x10000) + value1 = 0x10000; + if(value2 > 0x10000) + value2 = 0x10000; + if(value2 < value1) + goto mapping; + /* Do the last value first to avoid having to realloc() */ + if(setCode(value2, 0, encoding->row_size, + &first, &last, &encsize, &enc)) + goto error; + for(i = value1; i < value2; i++) { + if(setCode(i, 0, encoding->row_size, + &first, &last, &encsize, &enc)) + goto error; + } + goto mapping; + + default: goto mapping; /* ignore unknown lines */ + } + + string_mapping: + line = getnextline(f); + switch(line) { + case EOF_LINE: goto error; + case ENDMAPPING_LINE: + mapping->recode = FontEncUndefinedRecode; + mapping->name = FontEncSimpleName; + mapping->client_data = sn = malloc(sizeof(FontEncSimpleNameRec)); + if(sn == NULL) + goto error; + if(first > last) { + free(sn); + mapping->client_data = sn = NULL; + goto error; + } + sn->first = first; + sn->len = last - first + 1; + sn->map = malloc(sn->len*sizeof(char*)); + if(sn->map == NULL) { + free(sn); + mapping->client_data = sn = NULL; + goto error; + } + for(i = 0; i < sn->len; i++) + sn->map[i] = nam[first+i]; + install_mapping(encoding,mapping); + mapping = NULL; + first = 0xFFFF; last=0; + goto no_mapping; + case NAME_LINE: + if(value1 >= 0x10000) goto string_mapping; + if(namsize == 0) { + namsize = (value1) < 256 ? 256 : 0x10000; + nam = malloc(namsize * sizeof(char*)); + if(nam == NULL) { + namsize=0; + goto error; + } + } else if(namsize <= value1) { + namsize = 0x10000; + if((newnam = (char**)realloc(nam, namsize)) == NULL) + goto error; + nam = newnam; + } + if(first > last) { + first = last = value1; + } + if(value1 < first) { + for(i = value1; i < first; i++) + nam[i] = NULL; + first = value1; + } + if(value1 > last) { + for(i=last+1; i <= value1; i++) + nam[i]=NULL; + last = value1; + } + nam[value1] = strdup(keyword_value); + if(nam[value1] == NULL) { + goto error; + } + goto string_mapping; + + default: goto string_mapping; /* ignore unknown lines */ + } + + done: + if(encsize) free(enc); encsize=0; enc = NULL; + if(namsize) free(nam); namsize=0; nam = NULL; /* don't free entries! */ + + encoding->aliases=NULL; + if(numaliases) { + encoding->aliases = malloc((numaliases+1)*sizeof(char*)); + if(encoding->aliases == NULL) + goto error; + for(i=0; i<numaliases; i++) + encoding->aliases[i] = aliases[i]; + encoding->aliases[numaliases]=NULL; + } + + return encoding; + +error: + if(encsize) free(enc); encsize=0; + if(namsize) { + for(i = first; i <= last; i++) + free(nam[i]); + free(nam); + } + if(mapping) { + free(mapping->client_data); + free(mapping); + } + if(encoding) { + FontMapPtr nextmap; + free(encoding->name); + for (mapping = encoding->mappings; mapping; mapping = nextmap) { + free(mapping->client_data); + nextmap = mapping->next; + free(mapping); + } + free(encoding); + } + for(i = 0; i < numaliases; i++) + free(aliases[i]); + /* We don't need to free sn and sm as they handled locally in the body.*/ + return NULL; +} + +char* +FontEncDirectory(void) +{ + static char* dir = NULL; + + if(dir == NULL) { + char *c = getenv("FONT_ENCODINGS_DIRECTORY"); + if(c) { + dir = strdup(c); + if(!dir) + return NULL; + } else { + dir = FONT_ENCODINGS_DIRECTORY; + } + } + return dir; +} + +static void +parseFontFileName(const char *fontFileName, char *buf, char *dir) +{ + const char *p; + char *q, *lastslash; + + for(p = fontFileName, q = dir, lastslash = NULL; *p; p++, q++) { + *q = *p; + if(*p == '/') + lastslash = q+1; + } + + if(!lastslash) + lastslash = dir; + + *lastslash = '\0'; + + if(buf && strlen(dir) + 14 < MAXFONTFILENAMELEN) { + strcpy(buf, dir); + strcat(buf, "encodings.dir"); + } +} + +static FontEncPtr +FontEncReallyReallyLoad(const char *charset, + const char *dirname, const char *dir) +{ + FontFilePtr f; + FILE *file; + FontEncPtr encoding; + char file_name[MAXFONTFILENAMELEN], encoding_name[MAXFONTNAMELEN], + buf[MAXFONTFILENAMELEN]; + int count, n; + static char format[24] = ""; + + /* As we don't really expect to open encodings that often, we don't + take the trouble of caching encodings directories. */ + + if((file = fopen(dirname, "r")) == NULL) { + return NULL; + } + + count = fscanf(file, "%d\n", &n); + if(count == EOF || count != 1) { + fclose(file); + return NULL; + } + + encoding = NULL; + if (!format[0]) { + sprintf(format, "%%%ds %%%d[^\n]\n", (int)sizeof(encoding_name) - 1, + (int)sizeof(file_name) - 1); + } + for(;;) { + count = fscanf(file, format, encoding_name, file_name); + if(count == EOF) + break; + if(count != 2) + break; + + if(!strcasecmp(encoding_name, charset)) { + /* Found it */ + if(file_name[0] != '/') { + if(strlen(dir) + strlen(file_name) >= MAXFONTFILENAMELEN) { + fclose(file); + return NULL; + } + strcpy(buf, dir); + strcat(buf, file_name); + } else { + strcpy(buf , file_name); + } + + f = FontFileOpen(buf); + if(f == NULL) { + fclose(file); + return NULL; + } + encoding = parseEncodingFile(f, 0); + FontFileClose(f); + break; + } + } + + fclose(file); + + return encoding; +} + +/* Parser ntrypoint -- used by FontEncLoad */ +FontEncPtr +FontEncReallyLoad(const char *charset, const char *fontFileName) +{ + FontEncPtr encoding; + char dir[MAXFONTFILENAMELEN], dirname[MAXFONTFILENAMELEN]; + char *d; + + if(fontFileName) { + parseFontFileName(fontFileName, dirname, dir); + encoding = FontEncReallyReallyLoad(charset, dirname, dir); + if(encoding) + return(encoding); + } + + d = FontEncDirectory(); + if(d) { + parseFontFileName(d, NULL, dir); + encoding = FontEncReallyReallyLoad(charset, d, dir); + return encoding; + } + + return NULL; +} + +/* Return a NULL-terminated array of encoding names. Note that this + * function has incestuous knowledge of the allocations done by + * parseEncodingFile. */ + +char ** +FontEncIdentify(const char *fileName) +{ + FontFilePtr f; + FontEncPtr encoding; + char **names, **name, **alias; + int numaliases; + + if((f = FontFileOpen(fileName))==NULL) { + return NULL; + } + encoding = parseEncodingFile(f, 1); + FontFileClose(f); + + if(!encoding) + return NULL; + + numaliases = 0; + if(encoding->aliases) + for(alias = encoding->aliases; *alias; alias++) + numaliases++; + + names = malloc((numaliases+2)*sizeof(char*)); + if(names == NULL) { + free(encoding->aliases); + free(encoding); + return NULL; + } + + name = names; + *(name++) = encoding->name; + if(numaliases > 0) + for(alias = encoding->aliases; *alias; alias++, name++) + *name = *alias; + + *name = NULL; + free(encoding->aliases); + free(encoding); + + return names; +} |