Imported nx-X11-3.3.0-7.tar.gznx-X11/3.3.0-7

Summary: Imported nx-X11-3.3.0-7.tar.gz
Keywords:

Imported nx-X11-3.3.0-7.tar.gz
into Git repository

1 files changed, 963 insertions, 0 deletions

diff --git a/nx-X11/lib/font/fontfile/encparse.c.X.original b/nx-X11/lib/font/fontfile/encparse.c.X.original
new file mode 100644
index 000000000..285f5a17d
--- /dev/null
+++ b/nx-X11/lib/font/fontfile/encparse.c.X.original
@@ -0,0 +1,963 @@
+/*
+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.
+*/
+
+/* $XFree86: xc/lib/font/fontfile/encparse.c,v 1.20tsi Exp $ */
+
+/* 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
+
+#ifndef FONTENC_NO_LIBFONT
+
+#include <X11/fonts/fntfilio.h>
+#include <X11/fonts/fntfilst.h>
+
+#else
+
+#include <stdlib.h>
+#define xalloc(n) malloc(n)
+#define xrealloc(p, n) realloc(p, n)
+#define xfree(p) free(p)
+
+#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
+
+#endif
+
+#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 = (unsigned short*)xalloc((*encsize) * sizeof(unsigned short));
+        if(*enc == NULL) {
+            *encsize = 0;
+            return 1;
+        }
+    } else if(*encsize <= index) {
+        *encsize = 0x10000;
+        if((newenc = (unsigned short*)xrealloc(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 = (FontEncPtr)xalloc(sizeof(FontEncRec));
+        if(encoding == NULL)
+            goto error;
+        encoding->name = (char*)xalloc(strlen(keyword_value)+1);
+        if(encoding->name == NULL)
+            goto error;
+        strcpy(encoding->name, keyword_value);
+        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] = (char*)xalloc(strlen(keyword_value)+1);
+            if(aliases[numaliases] == NULL)
+                goto error;
+            strcpy(aliases[numaliases], keyword_value);
+            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 = (FontMapPtr)xalloc(sizeof(FontMapRec));
+            if(mapping == NULL)
+                goto error;
+            mapping->type = FONT_ENCODING_UNICODE;
+            mapping->pid = 0;
+            mapping->eid = 0;
+            mapping->recode = 0;
+            mapping->name = 0;
+            mapping->client_data = 0;
+            mapping->next = 0;
+            goto mapping;
+        } else if(!strcasecmp(keyword_value, "cmap")) {
+            mapping = (FontMapPtr)xalloc(sizeof(FontMapRec));
+            if(mapping == NULL)
+                goto error;
+            mapping->type = FONT_ENCODING_TRUETYPE;
+            mapping->pid = value1;
+            mapping->eid = value2;
+            mapping->recode = 0;
+            mapping->name = 0;
+            mapping->client_data = 0;
+            mapping->next = 0;
+            goto mapping;
+        } else if(!strcasecmp(keyword_value, "postscript")) {
+            mapping = (FontMapPtr)xalloc(sizeof(FontMapRec));
+            if(mapping == NULL)
+                goto error;
+            mapping->type = FONT_ENCODING_POSTSCRIPT;
+            mapping->pid = 0;
+            mapping->eid = 0;
+            mapping->recode = 0;
+            mapping->name = 0;
+            mapping->client_data = 0;
+            mapping->next = 0;
+            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 =
+            (FontEncSimpleMapPtr)xalloc(sizeof(FontEncSimpleMapRec));
+        if(sm == NULL)
+            goto error;
+        sm->row_size = encoding->row_size;
+        if(first <= last) {
+            sm->first = first;
+            sm->len=last-first+1;
+            sm->map = 
+                (unsigned short*)xalloc(sm->len * sizeof(unsigned short));
+            if(sm->map == NULL) {
+                xfree(sm);
+                mapping->client_data = sm = NULL;
+                goto error;
+            }
+        } else {
+            sm->first = 0;
+            sm->len = 0;
+            sm->map = 0;
+        }
+        for(i=0; i < sm->len; i++)
+            sm -> map[i] = enc[first+i];
+        install_mapping(encoding, mapping);
+        mapping = 0;
+        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 =
+            (FontEncSimpleNamePtr)xalloc(sizeof(FontEncSimpleNameRec));
+        if(sn == NULL)
+            goto error;
+        if(first > last) {
+            xfree(sn);
+            mapping->client_data = sn = NULL;
+            goto error;
+        }
+        sn->first = first;
+        sn->len = last - first + 1;
+        sn->map = (char**)xalloc(sn->len*sizeof(char*));
+        if(sn->map == NULL) {
+            xfree(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 = 0;
+        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 = (char**)xalloc(namsize * sizeof(char*));
+            if(nam == NULL) {
+                namsize=0;
+                goto error;
+            }
+        } else if(namsize <= value1) {
+            namsize = 0x10000;
+            if((newnam = (char**)xrealloc(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] = (char*)xalloc(strlen(keyword_value)+1);
+        if(nam[value1] == NULL) {
+            goto error;
+        }
+        strcpy(nam[value1], keyword_value);
+        goto string_mapping;
+
+    default: goto string_mapping; /* ignore unknown lines */
+    }
+
+  done:
+    if(encsize) xfree(enc); encsize=0; enc = NULL;
+    if(namsize) xfree(nam); namsize=0; nam = NULL; /* don't free entries! */
+
+    encoding->aliases=NULL;
+    if(numaliases) {
+        encoding->aliases = (char**)xalloc((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) xfree(enc); encsize=0;
+    if(namsize) {
+        for(i = first; i <= last; i++)
+            if(nam[i])
+                xfree(nam[i]);
+        xfree(nam);
+        namsize = 0;
+    }
+    if(mapping) {
+        if(mapping->client_data) xfree(mapping->client_data);
+        xfree(mapping);
+    }
+    if(encoding) {
+        if(encoding->name) xfree(encoding->name);
+    for(mapping = encoding->mappings; mapping; mapping = mapping->next) {
+        if(mapping->client_data) xfree(mapping->client_data);
+        xfree(mapping);
+    }
+    xfree(encoding);
+    }
+    for(i = 0; i < numaliases; i++)
+        xfree(aliases[i]);
+    /* We don't need to free sn and sm as they handled locally in the body.*/
+    return 0;
+}
+
+char*
+FontEncDirectory()
+{
+    static char* dir = NULL;
+
+    if(dir == NULL) {
+        char *c = getenv("FONT_ENCODINGS_DIRECTORY");
+        if(c) {
+            dir = malloc(strlen(c) + 1);
+            if(!dir)
+                return NULL;
+            strcpy(dir, c);
+        } 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)
+                    return NULL;
+                strcpy(buf, dir);
+                strcat(buf, file_name);
+            } else {
+                strcpy(buf , file_name);
+            }
+
+            f = FontFileOpen(buf);
+            if(f == NULL) {
+                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 = (char**)xalloc((numaliases+2)*sizeof(char*));
+    if(names == NULL) {
+        if(encoding->aliases)
+            xfree(encoding->aliases);
+        xfree(encoding);
+        return NULL;
+    }
+
+    name = names;
+    *(name++) = encoding->name;
+    if(numaliases > 0)
+    for(alias = encoding->aliases; *alias; alias++, name++)
+        *name = *alias;
+
+    *name = 0;
+    xfree(encoding->aliases);
+    xfree(encoding);
+
+    return names;
+}