/*
  Copyright (c) 2002-2003 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.
*/
/* $XdotOrg: xc/programs/mkfontscale/mkfontscale.c,v 1.1.4.1.2.1 2004/03/17 20:32:18 ago Exp $ */
/* $XFree86: xc/programs/mkfontscale/mkfontscale.c,v 1.21 2003/12/10 02:58:07 dawes Exp $ */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>

#include <X11/Xos.h>
#include <X11/fonts/fontenc.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_SFNT_NAMES_H
#include FT_TRUETYPE_TABLES_H
#include FT_TRUETYPE_IDS_H
#include FT_TYPE1_TABLES_H
#include FT_BDF_H
#include FT_TRUETYPE_TABLES_H

#include "list.h"
#include "hash.h"
#include "data.h"
#include "ident.h"

#ifdef NEED_SNPRINTF
#undef SCOPE
#define SCOPE static
#include "snprintf.c"
#endif

#define NPREFIX 1024

#ifndef MAXFONTFILENAMELEN
#define MAXFONTFILENAMELEN 1024
#endif
#ifndef MAXFONTNAMELEN
#define MAXFONTNAMELEN 1024
#endif

char *encodings_array[] =
    { "iso8859-1", "iso8859-2", "iso8859-3", "iso8859-4", "iso8859-5",
      "iso8859-6", "iso8859-6.8", "iso8859-6.8x", "iso8859-6.16",
      "iso8859-7", "iso8859-8", "iso8859-9", "iso8859-10",
      "iso8859-11", "iso8859-12", "iso8859-13", "iso8859-14",
      "iso8859-15", "iso8859-16",
      "ansi-1251", "koi8-r", "koi8-u", "koi8-ru", "koi8-e", "koi8-uni",
      "tis620-2",
      "sun.unicode.india-0",
      "adobe-standard", "adobe-symbol",
      "ibm-cp437", "ibm-cp850", "ibm-cp852", "ibm-cp866", "microsoft-cp1252",
      /* But not "adobe-dingbats", as it uses generic glyph names. */
      "jisx0201.1976-0", "jisx0208.1983-0", "jisx0208.1990-0",
      "jisx0212.1990-0", "big5-0", "big5.eten-0", "big5hkscs-0",
      "gb2312.1980-0", "gb18030.2000-0", "gb18030.2000-1",
      "ksc5601.1987-0", "ksc5601.1992-3"};

char *extra_encodings_array[] =
    { "iso10646-1", "adobe-fontspecific", "microsoft-symbol" };

ListPtr encodings, extra_encodings;
char *outfilename;

#define countof(_a) (sizeof(_a)/sizeof((_a)[0]))

static int doDirectory(char*, int, ListPtr);
static int checkEncoding(FT_Face face, char *encoding_name);
static int checkExtraEncoding(FT_Face face, char *encoding_name, int found);
static int find_cmap(int type, int pid, int eid, FT_Face face);
static char* notice_foundry(char *notice);
static char* vendor_foundry(signed char *vendor);
static int readFontScale(HashTablePtr entries, char *dirname);
ListPtr makeXLFD(char *filename, FT_Face face, int);
static int readEncodings(ListPtr encodings, char *dirname);

static FT_Library ft_library;
static float bigEncodingFuzz = 0.02;

static int relative;
static int doScalable;
static int doBitmaps;
static int doISO10646_1_encoding;
static int onlyEncodings;
static ListPtr encodingsToDo;
static int reencodeLegacy;
static char *encodingPrefix;
static char *exclusionSuffix;

static void
usage(void)
{
    fprintf(stderr, 
            "mkfontscale [ -b ] [ -s ] [ -o filename ] [-x suffix ]\n"
            "            [ -a encoding ] [ -f fuzz ] [ -l ] "
            "            [ -e directory ] [ -p prefix ] [ -n ] [ -r ] \n"
            "            [-u] [-U] [ directory ]...\n");
}

int
main(int argc, char **argv)
{
    int argn;
    FT_Error ftrc;
    int rc, ll = 0;
    char prefix[NPREFIX];

    encodingPrefix = NULL;
    exclusionSuffix = NULL;

    if(getcwd(prefix, NPREFIX - 1) == NULL) {
        perror("Couldn't get cwd");
        exit(1);
    }
    if(prefix[strlen(prefix) - 1] != '/')
        strcat(prefix, "/");
    encodingPrefix = dsprintf("%s", prefix);

    outfilename = NULL;

    encodings = makeList(encodings_array, countof(encodings_array), NULL, 0);

    extra_encodings = makeList(extra_encodings_array, 
                               countof(extra_encodings_array),
                               NULL, 0);
    doBitmaps = 0;
    doISO10646_1_encoding = 1;
    doScalable = 1;
    onlyEncodings = 0;
    relative = 0;
    reencodeLegacy = 1;
    encodingsToDo = NULL;

    argn = 1;
    while(argn < argc) {
        if(argv[argn][0] == '\0' || argv[argn][0] != '-')
            break;
        if(argv[argn][1] == '-') {
            argn++;
            break;
        } else if (strcmp(argv[argn], "-x") == 0) {
            if(argn >= argc - 1) {
                usage();
                exit(1);
            }
            exclusionSuffix = argv[argn + 1];
            argn += 2;
        } else if(strcmp(argv[argn], "-a") == 0) {
            if(argn >= argc - 1) {
                usage();
                exit(1);
            }
            makeList(&argv[argn + 1], 1, encodings, 0);
            argn += 2;
        } else if(strcmp(argv[argn], "-p") == 0) {
            if(argn >= argc - 1) {
                usage();
                exit(1);
            }
            if(strlen(argv[argn + 1]) > NPREFIX - 1) {
                usage();
                exit(1);
            }
            free(encodingPrefix);
            encodingPrefix = dsprintf("%s", argv[argn + 1]);
            argn += 2;
        } else if(strcmp(argv[argn], "-e") == 0) {
            if(argn >= argc - 1) {
                usage();
                exit(1);
            }
            rc = readEncodings(encodingsToDo, argv[argn + 1]);
            if(rc < 0)
                exit(1);
            argn += 2;
        } else if(strcmp(argv[argn], "-b") == 0) {
            doBitmaps = 1;
            argn++;
        } else if(strcmp(argv[argn], "-u") == 0) {
            doISO10646_1_encoding = 0;
            argn++;
        } else if(strcmp(argv[argn], "-U") == 0) {
            doISO10646_1_encoding = 1;
            argn++;            
        } else if(strcmp(argv[argn], "-s") == 0) {
            doScalable = 0;
            argn++;
        } else if(strcmp(argv[argn], "-n") == 0) {
            onlyEncodings = 1;
            argn++;
        } else if(strcmp(argv[argn], "-r") == 0) {
            relative = 1;
            argn++;
        } else if(strcmp(argv[argn], "-l") == 0) {
            reencodeLegacy = !reencodeLegacy;
            argn++;
        } else if(strcmp(argv[argn], "-o") == 0) {
            if(argn >= argc - 1) {
                usage();
                exit(1);
            }
            outfilename = argv[argn + 1];
            argn += 2;
        } else if(strcmp(argv[argn], "-f") == 0) {
            if(argn >= argc - 1) {
                usage();
                exit(1);
            }
            bigEncodingFuzz = atof(argv[argn + 1]) / 100.0;
            argn += 2;
        } else if (strcmp(argv[argn], "-r") == 0) { /* ignore for now */
	    argn++;
	} else if (strcmp(argv[argn], "-n") == 0) {
	    argn++;
	} else {
            usage();
            exit(1);
        }
    }

    if(outfilename == NULL) {
        if(doBitmaps)
            outfilename = "fonts.dir";
        else 
            outfilename = "fonts.scale";
    }

    ftrc = FT_Init_FreeType(&ft_library);
    if(ftrc) {
        fprintf(stderr, "Could not initialise FreeType library: %d\n", ftrc);
        exit(1);
    }

    ll = listLength(encodingsToDo);

    if (argn == argc)
        doDirectory(".", ll, encodingsToDo);
    else
        while(argn < argc) {
            doDirectory(argv[argn], ll, encodingsToDo);
            argn++;
        }
    return 0;
}

static int
getNameHelper(FT_Face face, int nid, int pid, int eid,
              FT_SfntName *name_return)
{
    FT_SfntName name;
    int n, i;

    n = FT_Get_Sfnt_Name_Count(face);
    if(n <= 0)
        return 0;

    for(i = 0; i < n; i++) {
        if(FT_Get_Sfnt_Name(face, i, &name))
            continue;
        if(name.name_id == nid &&
           name.platform_id == pid &&
           (eid < 0 || name.encoding_id == eid)) {
            switch(name.platform_id) {
            case TT_PLATFORM_APPLE_UNICODE:
            case TT_PLATFORM_MACINTOSH:
                if(name.language_id != TT_MAC_LANGID_ENGLISH)
                    continue;
                break;
            case TT_PLATFORM_MICROSOFT:
                if(name.language_id != TT_MS_LANGID_ENGLISH_UNITED_STATES &&
                   name.language_id != TT_MS_LANGID_ENGLISH_UNITED_KINGDOM)
                    continue;
                break;
            default:
                continue;
            }
            if(name.string_len > 0) {
                *name_return = name;
                return 1;
            }
        }
    }
    return 0;
}

static char *
getName(FT_Face face, int nid)
{
    FT_SfntName name;
    char *string;
    int i;

    if(getNameHelper(face, nid, 
                     TT_PLATFORM_MICROSOFT, TT_MS_ID_UNICODE_CS, &name) ||
       getNameHelper(face, nid, 
                     TT_PLATFORM_APPLE_UNICODE, -1, &name)) {
        string = malloc(name.string_len / 2 + 1);
        if(string == NULL) {
            fprintf(stderr, "Couldn't allocate name\n");
            exit(1);
        }
        for(i = 0; i < name.string_len / 2; i++) {
            if(name.string[2 * i] != 0)
                string[i] = '?';
            else
                string[i] = name.string[2 * i + 1];
        }
        string[i] = '\0';
        return string;
    }

    /* Pretend that Apple Roman is ISO 8859-1. */
    if(getNameHelper(face, nid, TT_PLATFORM_MACINTOSH, TT_MAC_ID_ROMAN,
                     &name)) {
        string = malloc(name.string_len + 1);
        if(string == NULL) {
            fprintf(stderr, "Couldn't allocate name\n");
            exit(1);
        }
        memcpy(string, name.string, name.string_len);
        string[name.string_len] = '\0';
        return string;
    }

    return NULL;
}

static char*
os2Weight(int weight)
{
    if(weight < 150)
        return "thin";
    else if(weight < 250)
        return "extralight";
    else if(weight < 350)
        return "light";
    else if(weight < 450)
        return "medium";        /* officially "normal" */
    else if(weight < 550)
        return "medium";
    else if(weight < 650)
        return "semibold";
    else if(weight < 750)
        return "bold";
    else if(weight < 850)
        return "extrabold";
    else 
        return "black";
}

static char*
os2Width(int width)
{
    if(width <= 1)
        return "ultracondensed";
    else if(width <= 2)
        return "extracondensed";
    else if(width <= 3)
        return "condensed";
    else if(width <= 4)
        return "semicondensed";
    else if(width <= 5)
        return "normal";
    else if(width <= 6)
        return "semiexpanded";
    else if(width <= 7)
        return "expanded";
    else if(width <= 8)
        return "extraexpanded";
    else
        return "ultraexpanded";
}

static char *widths[] = {
    "ultracondensed", "extracondensed", "condensed", "semicondensed",
    "normal", "semiexpanded", "expanded", "extraexpanded", "ultraexpanded" 
};

#define NUMWIDTHS (sizeof(widths) / sizeof(widths[0]))

static char*
nameWidth(char *name)
{
    char buf[500];
    int i;
    int n = strlen(name);

    if(n >= 499) return NULL;
    for(i = 0; i < n; i++)
        buf[i] = tolower(name[i]);
    buf[i] = '\0';

    for(i = 0; i < NUMWIDTHS; i++)
        if(strstr(buf, widths[i]))
            return widths[i];
    return NULL;
}

static char*
t1Weight(char *weight)
{
    if(!weight)
        return NULL;
    if(strcmp(weight, "Thin") == 0)
        return "thin";
    if(strcmp(weight, "Light") == 0)
        return "light";
    if(strcmp(weight, "Regular") == 0)
        return "medium";
    if(strcmp(weight, "Normal") == 0)
        return "medium";
    if(strcmp(weight, "Medium") == 0)
        return "medium";
    if(strcmp(weight, "Book") == 0)
        return "medium";
    if(strcmp(weight, "Roman") == 0) /* Some URW++ fonts do that! */
        return "medium";
    if(strcmp(weight, "Demi") == 0)
        return "semibold";
    if(strcmp(weight, "DemiBold") == 0)
        return "semibold";
    else if(strcmp(weight, "Bold") == 0)
        return "bold";
    else if(strcmp(weight, "Black") == 0)
        return "black";
    else {
        fprintf(stderr, "Unknown Type 1 weight \"%s\"\n", weight);
        return NULL;
    }
}

static int
unsafe(char c)
{
    return 
        c < 0x20 || c > 0x7E ||
        c == '[' || c == ']' || c == '(' || c == ')' || c == '\\' || c == '-';
}

static char *
safe(char* s)
{
    int i, len, safe_flag = 1;
    char *t;

    i = 0;
    while(s[i] != '\0') {
        if(unsafe(s[i]))
            safe_flag = 0;
        i++;
    }

    if(safe_flag) return s;

    len = i;
    t = malloc(len + 1);
    if(t == NULL) {
        perror("Couldn't allocate string");
        exit(1);
    }

    for(i = 0; i < len; i++) {
        if(unsafe(s[i]))
            t[i] = ' ';
        else
            t[i] = s[i];
    }
    t[i] = '\0';
    return t;
}

ListPtr
makeXLFD(char *filename, FT_Face face, int isBitmap)
{
    ListPtr xlfd = NULL;
    char *foundry, *family, *weight, *slant, *sWidth, *adstyle, 
        *spacing, *full_name;
    TT_Header *head;
    TT_HoriHeader *hhea;
    TT_OS2 *os2;
    TT_Postscript *post;
    PS_FontInfoRec *t1info, t1info_rec;
    int rc;

    foundry = NULL;
    family = NULL;
    weight = NULL;
    slant = NULL;
    sWidth = NULL;
    adstyle = NULL;
    spacing = NULL;
    full_name = NULL;

    head = FT_Get_Sfnt_Table(face, ft_sfnt_head);
    hhea = FT_Get_Sfnt_Table(face, ft_sfnt_hhea);
    os2 = FT_Get_Sfnt_Table(face, ft_sfnt_os2);
    post = FT_Get_Sfnt_Table(face, ft_sfnt_post);

    rc = FT_Get_PS_Font_Info(face, &t1info_rec);
    if(rc == 0)
        t1info = &t1info_rec;
    else
        t1info = NULL;
        
    if(!family)
        family = getName(face, TT_NAME_ID_FONT_FAMILY);
    if(!family)
        family = getName(face, TT_NAME_ID_FULL_NAME);
    if(!family)
        family = getName(face, TT_NAME_ID_PS_NAME);

    if(!full_name)
        full_name = getName(face, TT_NAME_ID_FULL_NAME);
    if(!full_name)
        full_name = getName(face, TT_NAME_ID_PS_NAME);

    if(os2 && os2->version != 0xFFFF) {
        if(!weight)
            weight = os2Weight(os2->usWeightClass);
        if(!sWidth)
            sWidth = os2Width(os2->usWidthClass);
        if(!foundry)
            foundry = vendor_foundry(os2->achVendID);
        if(!slant)
            slant = os2->fsSelection & 1 ? "i" : "r";
    }

    if(post) {
        if(!spacing) {
            if(post->isFixedPitch) {
                if(hhea->min_Left_Side_Bearing >= 0 &&
                   hhea->xMax_Extent <= hhea->advance_Width_Max) {
                    spacing = "c";
                } else {
                    spacing = "m";
                }
            } else {
                spacing = "p";
            }
        }
    }
            
    if(t1info) {
        if(!family)
            family = t1info->family_name;
        if(!family)
            family = t1info->full_name;
        if(!full_name)
            full_name = t1info->full_name;
        if(!foundry)
            foundry = notice_foundry(t1info->notice);
        if(!weight)
            weight = t1Weight(t1info->weight);
        if(!spacing)
            spacing = t1info->is_fixed_pitch ? "m" : "p";
        if(!slant) {
            /* Bitstream fonts have positive italic angle. */
            slant =
                t1info->italic_angle <= -4 || t1info->italic_angle >= 4 ?
                "i" : "r";
        }
    }

    if(!full_name) {
        fprintf(stderr, "Couldn't determine full name for %s\n", filename);
        full_name = filename;
    }

    if(head) {
        if(!slant)
            slant = head->Mac_Style & 2 ? "i" : "r";
        if(!weight)
            weight = head->Mac_Style & 1 ? "bold" : "medium";
    }

    if(!slant) {
        fprintf(stderr, "Couldn't determine slant for %s\n", filename);
        slant = "r";
    }

    if(!weight) {
        fprintf(stderr, "Couldn't determine weight for %s\n", filename);
        weight = "medium";
    }

    if(!foundry) {
        char *notice;
        notice = getName(face, TT_NAME_ID_TRADEMARK);
        if(notice) {
            foundry = notice_foundry(notice);
        }
        if(!foundry) {
            notice = getName(face, TT_NAME_ID_MANUFACTURER);
            if(notice) {
                foundry = notice_foundry(notice);
            }
        }
    }

    if(strcmp(slant, "i") == 0) {
        if(strstr(full_name, "Oblique"))
            slant = "o";
        if(strstr(full_name, "Slanted"))
            slant = "o";
    }

    if(!sWidth)
        sWidth = nameWidth(full_name);

    if(!foundry) foundry = "misc";
    if(!family) {
        fprintf(stderr, "Couldn't get family name for %s\n", filename);
        family = filename;
    }

    if(!weight) weight = "medium";
    if(!slant) slant = "r";
    if(!sWidth) sWidth = "normal";
    if(!adstyle) adstyle = "";
    if(!spacing) spacing = "p";

    /* Yes, it's a memory leak. */
    foundry = safe(foundry);
    family = safe(family);

    if(!isBitmap) {
        xlfd = listConsF(xlfd,
                         "-%s-%s-%s-%s-%s-%s-0-0-0-0-%s-0",
                         foundry, family,
                         weight, slant, sWidth, adstyle, spacing);
    } else {
        int i, w, h, xres, yres;
        for(i = 0; i < face->num_fixed_sizes; i++) {
            w = face->available_sizes[i].width;
            h = face->available_sizes[i].height;
            xres = 75;
            yres = (double)h / w * xres;
            xlfd = listConsF(xlfd,
                             "-%s-%s-%s-%s-%s-%s-%d-%d-%d-%d-%s-%d",
                             foundry, family,
                             weight, slant, sWidth, adstyle,
                             h, (int)(h / (double)yres * 72.27 * 10 + 0.5),
                             xres, yres,
                             spacing, 60);
        }
    }
    return xlfd;
}

static int
readFontScale(HashTablePtr entries, char *dirname)
{
    int n = strlen(dirname);
    char *filename;
    FILE *in;
    int rc, count, i;
    char file[MAXFONTFILENAMELEN], font[MAXFONTNAMELEN];
    char format[100];

    snprintf(format, 100, "%%%ds %%%d[^\n]\n", 
             MAXFONTFILENAMELEN, MAXFONTNAMELEN);

    if(dirname[n - 1] == '/')
        filename = dsprintf("%sfonts.scale", dirname);
    else
        filename = dsprintf("%s/fonts.scale", dirname);
    if(filename == NULL)
        return -1;

    in = fopen(filename, "r");
    free(filename);
    if(in == NULL) {
        if(errno != ENOENT)
            perror("open(fonts.scale)");
        return -1;
    }

    rc = fscanf(in, "%d\n", &count);
    if(rc != 1) {
        fprintf(stderr, "Invalid fonts.scale in %s.\n", dirname);
        fclose(in);
        return -1;
    }

    for(i = 0; i < count; i++) {
        rc = fscanf(in, format, file, font);
        if(rc != 2)
            break;
        putHash(entries, font, file, 100);
    }
    fclose(in);
    return 1;
}

static int
filePrio(char *filename)
{
    int n = strlen(filename);
    if(n < 4)
        return 0;
    if(strcmp(filename + n - 4, ".otf") == 0)
        return 4;
    if(strcmp(filename + n - 4, ".OTF") == 0)
        return 4;
    if(strcmp(filename + n - 4, ".ttf") == 0)
        return 3;
    if(strcmp(filename + n - 4, ".TTF") == 0)
        return 3;
    if(strcmp(filename + n - 3, ".gz") == 0)
        return 2;
    if(strcmp(filename + n - 2, ".Z") == 0)
        return 1;
    return 0;
}

static int
doDirectory(char *dirname_given, int numEncodings, ListPtr encodingsToDo)
{
    char *dirname, *fontscale_name, *filename, *encdir;
    FILE *fontscale, *encfile;
    DIR *dirp;
    struct dirent *entry;
    FT_Error ftrc;
    FT_Face face;
    ListPtr encoding, xlfd, lp;
    HashTablePtr entries;
    HashBucketPtr *array;
    int i, n, found, rc;
    int isBitmap=0,xl=0;

    if (exclusionSuffix)
        xl = strlen (exclusionSuffix);

    i = strlen(dirname_given);
    if(i == 0)
        dirname = dsprintf("./");
    else if(dirname_given[i - 1] != '/')
        dirname = dsprintf("%s/", dirname_given);
    else
        dirname = dsprintf("%s", dirname_given);

    if(dirname == NULL) {
        perror("dirname");
        exit(1);
    }

    if (onlyEncodings) 
	goto encodings;
    
    entries = makeHashTable();
    if(doBitmaps && !doScalable) {
        readFontScale(entries, dirname);
    }

    if(strcmp(outfilename, "-") == 0)
        fontscale_name = NULL;
    else {
        if(outfilename[0] == '/')
            fontscale_name = dsprintf("%s", outfilename);
        else
            fontscale_name = dsprintf("%s%s", dirname, outfilename);
        if(fontscale_name == NULL) {
            perror("fontscale_name");
            exit(1);
        }
    }

    dirp = opendir(dirname);
    if(dirp == NULL) {
        fprintf(stderr, "%s: ", dirname);
        perror("opendir");
        return 0;
    }

    if(fontscale_name == NULL)
        fontscale = stdout;
    else
        fontscale = fopen(fontscale_name, "w");

    if(fontscale == NULL) {
        fprintf(stderr, "%s: ", fontscale_name);
        perror("fopen(w)");
        return 0;
    }

    while((entry = readdir(dirp)) != NULL) {
        int have_face = 0;
        char *xlfd_name = NULL;
        xlfd = NULL;

	if (xl) {
	    int dl = strlen (entry->d_name);
	    if (strcmp (entry->d_name + dl - xl, exclusionSuffix) == 0)
		continue;
	}

        filename = dsprintf("%s%s", dirname, entry->d_name);

        if(doBitmaps)
            rc = bitmapIdentify(filename, &xlfd_name);
        else
            rc = 0;

        if(rc < 0)
            goto done;

        if(rc == 0) {
            ftrc = FT_New_Face(ft_library, filename, 0, &face);
            if(ftrc)
                goto done;
            have_face = 1;

            isBitmap = ((face->face_flags & FT_FACE_FLAG_SCALABLE) == 0);

            if(!isBitmap) {
                /* Workaround for bitmap-only TTF fonts */
                if(face->num_fixed_sizes > 0) {
                    TT_MaxProfile *maxp;
                    maxp = FT_Get_Sfnt_Table(face, ft_sfnt_maxp);
                    if(maxp != NULL && maxp->maxContours == 0)
                        isBitmap = 1;
                }
            }
        
            if(isBitmap) {
                if(!doBitmaps)
                    goto done;
            } else {
                if(!doScalable)
                    goto done;
            }

            if(isBitmap) {
                BDF_PropertyRec prop;
                rc = FT_Get_BDF_Property(face, "FONT", &prop);
                if(rc == 0 && prop.type == BDF_PROPERTY_TYPE_ATOM) {
                    xlfd_name = malloc(strlen(prop.u.atom) + 1);
                    if(xlfd_name == NULL)
                        goto done;
                    strcpy(xlfd_name, prop.u.atom);
                }
            }
        }

        if(xlfd_name) {
            /* We know it's a bitmap font, and we know its XLFD */
            int n = strlen(xlfd_name);
            if(reencodeLegacy &&
               n >= 12 && strcasecmp(xlfd_name + n - 11, "-iso10646-1") == 0) {
                char *s;

                s = malloc(n - 10);
                memcpy(s, xlfd_name, n - 11);
                s[n - 11] = '\0';
                xlfd = listCons(s, xlfd);
            } else {
                /* Not a reencodable font -- skip all the rest of the loop body */
                putHash(entries, xlfd_name, entry->d_name, filePrio(entry->d_name));
                goto done;
            }
        }

        if(!have_face) {
            ftrc = FT_New_Face(ft_library, filename, 0, &face);
            if(ftrc)
                goto done;
            have_face = 1;
            isBitmap = ((face->face_flags & FT_FACE_FLAG_SCALABLE) == 0);

            if(!isBitmap) {
                if(face->num_fixed_sizes > 0) {
                    TT_MaxProfile *maxp;
                    maxp = FT_Get_Sfnt_Table(face, ft_sfnt_maxp);
                    if(maxp != NULL && maxp->maxContours == 0)
                        isBitmap = 1;
                }
            }
        }

        if(xlfd == NULL)
            xlfd = makeXLFD(entry->d_name, face, isBitmap);

        found = 0;

        for(lp = xlfd; lp; lp = lp->next) {
            char buf[MAXFONTNAMELEN];
            for(encoding = encodings; encoding; encoding = encoding->next) {
                if(checkEncoding(face, encoding->value)) {
                    found = 1;
                    snprintf(buf, MAXFONTNAMELEN, "%s-%s",
                            lp->value, encoding->value);
                    putHash(entries, buf, entry->d_name, filePrio(entry->d_name));
                }
            }
            for(encoding = extra_encodings; encoding; 
                encoding = encoding->next) {
                if(checkExtraEncoding(face, encoding->value, found)) {
                    /* Do not set found! */
                    snprintf(buf, MAXFONTNAMELEN, "%s-%s",
                            lp->value, encoding->value);
                    putHash(entries, buf, entry->d_name, filePrio(entry->d_name));
                }
            }
        }
    done:
        if(have_face) {
            FT_Done_Face(face);
            have_face = 0;
        }
        deepDestroyList(xlfd);
        xlfd = NULL;
        free(filename);
    }

    closedir(dirp);
    n = hashElements(entries);
    fprintf(fontscale, "%d\n", n);
    array = hashArray(entries, 1);
    for(i = 0; i < n; i++)
        fprintf(fontscale, "%s %s\n", array[i]->value, array[i]->key);
    destroyHashArray(array);
    entries = NULL;
    if(fontscale_name) {
        fclose(fontscale);
        free(fontscale_name);
    }

 encodings:
    encdir = dsprintf("%s%s", dirname, "encodings.dir");

    if(encdir == NULL) {
	perror("encodings");
	exit(1);
    }
    unlink(encdir);

    if (numEncodings) {
	encfile = fopen(encdir, "w");
	if(encfile == NULL) {
	    perror("open(encodings.dir)");
	    exit(1);
	}
        fprintf(encfile, "%d\n", numEncodings);
        for(lp = encodingsToDo; lp; lp = lp->next) {
            fprintf(encfile, "%s\n", lp->value);
        }
	fclose (encfile);
    }

    free(dirname);
    return 1;
}

#define CODE_IGNORED(c) ((c) < 0x20 || \
                         ((c) >= 0x7F && (c) <= 0xA0) || \
                         (c) == 0xAD || (c) == 0xF71B)
   
static int
checkEncoding(FT_Face face, char *encoding_name)
{
    FontEncPtr encoding;
    FontMapPtr mapping;
    int i, j, c, koi8;
    char *n;

    encoding = FontEncFind(encoding_name, NULL);
    if(!encoding)
        return 0;

    /* An encoding is ``small'' if one of the following is true:
         - it is linear and has no more than 256 codepoints; or
         - it is a matrix encoding and has no more than one column.
       
       For small encodings using Unicode indices, we require perfect
       coverage except for CODE_IGNORED and KOI-8 IBM-PC compatibility.

       For large encodings, we require coverage up to bigEncodingFuzz.

       For encodings using PS names (currently Adobe Standard and
       Adobe Symbol only), we require perfect coverage. */


    if(FT_Has_PS_Glyph_Names(face)) {
        for(mapping = encoding->mappings; mapping; mapping = mapping->next) {
            if(mapping->type == FONT_ENCODING_POSTSCRIPT) {
                if(encoding->row_size > 0) {
                    for(i = encoding->first; i < encoding->size; i++) {
                        for(j = encoding->first_col; 
                            j < encoding->row_size; 
                            j++) {
                            n = FontEncName((i<<8) | j, mapping);
                            if(n && FT_Get_Name_Index(face, n) == 0) {
                                return 0;
                            }
                        }
                    }
                    return 1;
                } else {
                    for(i = encoding->first; i < encoding->size; i++) {
                        n = FontEncName(i, mapping);
                        if(n && FT_Get_Name_Index(face, n) == 0) {
                            return 0;
                        }
                    }
                    return 1;
                }
            }
        }
    }

    for(mapping = encoding->mappings; mapping; mapping = mapping->next) {
        if(find_cmap(mapping->type, mapping->pid, mapping->eid, face)) {
            int total = 0, failed = 0;
            if(encoding->row_size > 0) {
                int estimate = 
                    (encoding->size - encoding->first) *
                    (encoding->row_size - encoding->first_col);
                for(i = encoding->first; i < encoding->size; i++) {
                    for(j = encoding->first_col; 
                        j < encoding->row_size; 
                        j++) {
                        c = FontEncRecode((i<<8) | j, mapping);
                        if(CODE_IGNORED(c)) {
                            continue;
                        } else {
                            if(FT_Get_Char_Index(face, c) == 0) {
                                failed++;
                            }
                            total++;
                            if((encoding->size <= 1 && failed > 0) ||
                               ((float)failed >= bigEncodingFuzz * estimate)) {
                                return 0;
                            }
                        }
                    }
                }
                if((float)failed >= total * bigEncodingFuzz)
                    return 0;
                else
                    return 1;
            } else {
                int estimate = encoding->size - encoding->first;
                /* For the KOI8 encodings, we ignore the lack of
                   linedrawing and pseudo-math characters */
                if(strncmp(encoding->name, "koi8-", 5) == 0)
                    koi8 = 1;
                else
                    koi8 = 0;
                for(i = encoding->first; i < encoding->size; i++) {
                    c = FontEncRecode(i, mapping);
                    if(CODE_IGNORED(c) ||
                       (koi8 && ((c >= 0x2200 && c < 0x2600) || c == 0x00b2))) {
                        continue;
                    } else {
                        if(FT_Get_Char_Index(face, c) == 0) {
                            failed++;
                        }
                        total++;
                        if((encoding->size <= 256 && failed > 0) ||
                           ((float)failed >= bigEncodingFuzz * estimate)) {
                            return 0;
                        }
                    }
                }
                if((float)failed >= total * bigEncodingFuzz)
                    return 0;
                else
                    return 1;
            }
        }
    }
    return 0;
}

static int 
find_cmap(int type, int pid, int eid, FT_Face face)
{
    int i, n, rc;
    FT_CharMap cmap = NULL;

    n = face->num_charmaps;

    switch(type) {
    case FONT_ENCODING_TRUETYPE:  /* specific cmap */
        for(i=0; i<n; i++) {
            cmap = face->charmaps[i];
            if(cmap->platform_id == pid && cmap->encoding_id == eid) {
                rc = FT_Set_Charmap(face, cmap);
                if(rc == 0)
                    return 1;
            }
        }
        break;
    case FONT_ENCODING_UNICODE:   /* any Unicode cmap */
        /* prefer Microsoft Unicode */
        for(i=0; i<n; i++) {
            cmap = face->charmaps[i];
            if(cmap->platform_id == TT_PLATFORM_MICROSOFT && 
               cmap->encoding_id == TT_MS_ID_UNICODE_CS) {
                rc = FT_Set_Charmap(face, cmap);
                if(rc == 0)
                    return 1;
            }
        }
        break;
        /* Try Apple Unicode */
        for(i=0; i<n; i++) {
            cmap = face->charmaps[i];
            if(cmap->platform_id == TT_PLATFORM_APPLE_UNICODE) {
                rc = FT_Set_Charmap(face, cmap);
                if(rc == 0)
                    return 1;
            }
        }
        /* ISO Unicode? */
        for(i=0; i<n; i++) {
            cmap = face->charmaps[i];
            if(cmap->platform_id == TT_PLATFORM_ISO) {
                rc = FT_Set_Charmap(face, cmap);
                if(rc == 0)
                    return 1;
            }
        }
        break;
    default:
        return 0;
    }
    return 0;
}

static int
checkExtraEncoding(FT_Face face, char *encoding_name, int found)
{
    int c;

    if(strcasecmp(encoding_name, "iso10646-1") == 0) {
        if(doISO10646_1_encoding && find_cmap(FONT_ENCODING_UNICODE, -1, -1, face)) {
            int found = 0;
             /* Export as Unicode if there are at least 15 BMP
               characters that are not a space or ignored. */
            for(c = 0x21; c < 0x10000; c++) {
                if(CODE_IGNORED(c))
                    continue;
                if(FT_Get_Char_Index(face, c) > 0)
                    found++;
                if(found >= 15)
                    return 1;
            }
            return 0;
        } else
            return 0;
    } else if(strcasecmp(encoding_name, "microsoft-symbol") == 0) {
        if(find_cmap(FONT_ENCODING_TRUETYPE,
                     TT_PLATFORM_MICROSOFT, TT_MS_ID_SYMBOL_CS,
                     face))
            return 1;
        else
            return 0;
    } else if(strcasecmp(encoding_name, "adobe-fontspecific") == 0) {
        if(!found) {
            if(FT_Has_PS_Glyph_Names(face))
                return 1;
            else
                return 0;
        } else
            return 0;
    } else {
        fprintf(stderr, "Unknown extra encoding %s\n", encoding_name);
        return 0;
    }
}

static char*
notice_foundry(char *notice)
{
    int i;
    for(i = 0; i < countof(notice_foundries); i++)
        if(notice && strstr(notice, notice_foundries[i][0]))
            return notice_foundries[i][1];
    return NULL;
}

static int
vendor_match(signed char *vendor, char *vendor_string)
{
    /* vendor is not necessarily NUL-terminated. */
    int i, len;
    len = strlen(vendor_string);
    if(memcmp(vendor, vendor_string, len) != 0)
        return 0;
    for(i = len; i < 4; i++)
        if(vendor[i] != ' ' && vendor[i] != '\0')
            return 0;
    return 1;
}

static char*
vendor_foundry(signed char *vendor)
{
    int i;
    for(i = 0; i < countof(vendor_foundries); i++)
        if(vendor_match(vendor, vendor_foundries[i][0]))
            return vendor_foundries[i][1];
    return NULL;
}

static int
readEncodings(ListPtr encodings, char *dirname)
{
    char *fullname;
    DIR *dirp;
    struct dirent *file;
    char **names, **name;

    if(strlen(dirname) > 1 && dirname[strlen(dirname) - 1] == '/')
        dirname[strlen(dirname) - 1] = '\0';

    dirp = opendir(dirname);
    if(dirp == NULL) {
        perror("opendir");
        return -1;
    }

    while((file = readdir(dirp)) != NULL) {
        fullname = dsprintf("%s/%s", dirname, file->d_name);
        if(fullname == NULL) {
            fprintf(stderr, "Couldn't allocate fullname\n");
            closedir(dirp);
            return -1;
        }
        
        names = FontEncIdentify(fullname);
        if(!names)
            continue;

        for(name = names; *name; name++) {
            if(fullname[0] != '/' && !relative) {
                char *n;
                n = dsprintf("%s%s", encodingPrefix, fullname);
                if(n == NULL) {
                    fprintf(stderr, "Couldn't allocate name\n");
                    closedir(dirp);
                    return -1;
                }
                encodingsToDo = listConsF(encodingsToDo, "%s %s", *name, n);
                free(n);
            } else {
                encodingsToDo = 
                    listConsF(encodingsToDo, "%s %s", *name, fullname);
            }
            if(encodingsToDo == NULL) {
                fprintf(stderr, "Couldn't allocate encodings\n");
                closedir(dirp);
                return -1;
            }
        }
        free(names);            /* only the spine */
    }
    closedir(dirp);
    return 0;
}
