588 lines
14 KiB
C
588 lines
14 KiB
C
/*
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* fontconfig/fc-lang/fc-lang.c
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*
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* Copyright © 2002 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the author(s) not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. The authors make no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "fccharset.c"
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#include "fcstr.c"
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#include "fcserialize.c"
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/*
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* fc-lang
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*
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* Read a set of language orthographies and build C declarations for
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* charsets which can then be used to identify which languages are
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* supported by a given font. Note that this uses some utilities
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* from the fontconfig library, so the necessary file is simply
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* included in this compilation. A couple of extra utility
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* functions are also needed in slightly modified form
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*/
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FcPrivate void
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FcCacheObjectReference (void *object FC_UNUSED)
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{
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}
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FcPrivate void
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FcCacheObjectDereference (void *object FC_UNUSED)
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{
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}
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FcPrivate FcChar8 *
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FcLangNormalize (const FcChar8 *lang FC_UNUSED)
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{
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return NULL;
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}
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int FcDebugVal;
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FcChar8 *
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FcConfigHome (void)
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{
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return (FcChar8 *) getenv ("HOME");
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}
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static void
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fatal (const char *file, int lineno, const char *msg)
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{
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if (lineno)
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fprintf (stderr, "%s:%d: %s\n", file, lineno, msg);
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else
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fprintf (stderr, "%s: %s\n", file, msg);
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exit (1);
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}
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static char *
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get_line (FILE *f, char *buf, int *lineno)
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{
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char *hash;
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char *line;
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int end;
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next:
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line = buf;
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if (!fgets (line, 1024, f))
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return 0;
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++(*lineno);
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hash = strchr (line, '#');
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if (hash)
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*hash = '\0';
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while (line[0] && isspace (line[0]))
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line++;
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end = strlen (line);
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while (end > 0 && isspace (line[end-1]))
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line[--end] = '\0';
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if (line[0] == '\0' || line[0] == '\n' || line[0] == '\r')
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goto next;
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return line;
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}
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static char *dir = 0;
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static FILE *
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scanopen (char *file)
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{
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FILE *f;
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f = fopen (file, "r");
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if (!f && dir)
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{
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char path[1024];
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strcpy (path, dir);
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strcat (path, "/");
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strcat (path, file);
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f = fopen (path, "r");
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}
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return f;
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}
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/*
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* build a single charset from a source file
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*
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* The file format is quite simple, either
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* a single hex value or a pair separated with a dash
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*
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* Comments begin with '#'
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*/
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static FcCharSet *
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scan (FILE *f, char *file, FcCharSetFreezer *freezer)
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{
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FcCharSet *c = 0;
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FcCharSet *n;
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FcBool del;
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int start, end, ucs4;
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char buf[1024];
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char *line;
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int lineno = 0;
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while ((line = get_line (f, buf, &lineno)))
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{
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if (!strncmp (line, "include", 7))
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{
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FILE *included_f;
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char *included_file;
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included_file = strchr (line, ' ');
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if (!included_file)
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fatal (file, lineno,
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"invalid syntax, expected: include filename");
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while (isspace(*included_file))
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included_file++;
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included_f = scanopen (included_file);
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if (!included_f)
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fatal (included_file, 0, "can't open");
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n = scan (included_f, included_file, freezer);
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fclose (included_f);
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if (!c)
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c = FcCharSetCreate ();
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if (!FcCharSetMerge (c, n, NULL))
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fatal (file, lineno, "out of memory");
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FcCharSetDestroy (n);
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continue;
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}
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del = FcFalse;
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if (line[0] == '-')
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{
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del = FcTrue;
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line++;
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}
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if (strchr (line, '-'))
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{
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if (sscanf (line, "%x-%x", &start, &end) != 2)
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fatal (file, lineno, "parse error");
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}
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else
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{
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if (sscanf (line, "%x", &start) != 1)
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fatal (file, lineno, "parse error");
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end = start;
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}
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if (!c)
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c = FcCharSetCreate ();
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for (ucs4 = start; ucs4 <= end; ucs4++)
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{
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if (!((del ? FcCharSetDelChar : FcCharSetAddChar) (c, ucs4)))
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fatal (file, lineno, "out of memory");
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}
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}
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n = (FcCharSet *) FcCharSetFreeze (freezer, c);
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FcCharSetDestroy (c);
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return n;
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}
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/*
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* Convert a file name into a name suitable for C declarations
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*/
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static char *
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get_name (char *file)
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{
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char *name;
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char *dot;
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dot = strchr (file, '.');
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if (!dot)
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dot = file + strlen(file);
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name = malloc (dot - file + 1);
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strncpy (name, file, dot - file);
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name[dot-file] = '\0';
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return name;
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}
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/*
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* Convert a C name into a language name
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*/
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static char *
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get_lang (char *name)
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{
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char *lang = malloc (strlen (name) + 1);
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char *l = lang;
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char c;
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while ((c = *name++))
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{
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if (isupper ((int) (unsigned char) c))
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c = tolower ((int) (unsigned char) c);
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if (c == '_')
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c = '-';
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if (c == ' ')
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continue;
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*l++ = c;
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}
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*l++ = '\0';
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return lang;
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}
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typedef struct _Entry {
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int id;
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char *file;
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} Entry;
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static int compare (const void *a, const void *b)
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{
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const Entry *as = a, *bs = b;
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return FcStrCmpIgnoreCase ((const FcChar8 *) as->file, (const FcChar8 *) bs->file);
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}
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#define MAX_LANG 1024
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#define MAX_LANG_SET_MAP ((MAX_LANG + 31) / 32)
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#define BitSet(map, i) ((map)[(entries[i].id)>>5] |= ((FcChar32) 1 << ((entries[i].id) & 0x1f)))
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int
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main (int argc FC_UNUSED, char **argv)
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{
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static Entry entries[MAX_LANG];
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static FcCharSet *sets[MAX_LANG];
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static int duplicate[MAX_LANG];
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static int country[MAX_LANG];
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static char *names[MAX_LANG];
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static char *langs[MAX_LANG];
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static int off[MAX_LANG];
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FILE *f;
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int ncountry = 0;
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int i = 0;
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int nsets = 0;
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int argi;
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FcCharLeaf **leaves;
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int total_leaves = 0;
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int l, sl, tl, tn;
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static char line[1024];
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static FcChar32 map[MAX_LANG_SET_MAP];
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int num_lang_set_map;
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int setRangeStart[26];
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int setRangeEnd[26];
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FcChar8 setRangeChar;
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FcCharSetFreezer *freezer;
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freezer = FcCharSetFreezerCreate ();
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if (!freezer)
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fatal (argv[0], 0, "out of memory");
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argi = 1;
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while (argv[argi])
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{
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if (!strcmp (argv[argi], "-d"))
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{
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argi++;
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dir = argv[argi++];
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continue;
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}
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if (i == MAX_LANG)
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fatal (argv[0], 0, "Too many languages");
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entries[i].id = i;
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entries[i].file = argv[argi++];
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i++;
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}
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entries[i].file = 0;
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qsort (entries, i, sizeof (Entry), compare);
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i = 0;
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while (entries[i].file)
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{
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f = scanopen (entries[i].file);
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if (!f)
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fatal (entries[i].file, 0, strerror (errno));
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sets[i] = scan (f, entries[i].file, freezer);
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names[i] = get_name (entries[i].file);
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langs[i] = get_lang(names[i]);
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if (strchr (langs[i], '-'))
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country[ncountry++] = i;
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total_leaves += sets[i]->num;
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i++;
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fclose (f);
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}
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nsets = i;
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sets[i] = 0;
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leaves = malloc (total_leaves * sizeof (FcCharLeaf *));
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tl = 0;
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/*
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* Find unique leaves
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*/
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for (i = 0; sets[i]; i++)
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{
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for (sl = 0; sl < sets[i]->num; sl++)
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{
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for (l = 0; l < tl; l++)
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if (leaves[l] == FcCharSetLeaf(sets[i], sl))
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break;
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if (l == tl)
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leaves[tl++] = FcCharSetLeaf(sets[i], sl);
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}
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}
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/*
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* Scan the input until the marker is found
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*/
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while (fgets (line, sizeof (line), stdin))
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{
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if (!strncmp (line, "@@@", 3))
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break;
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fputs (line, stdout);
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}
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printf ("/* total size: %d unique leaves: %d */\n\n",
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total_leaves, tl);
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/*
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* Find duplicate charsets
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*/
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duplicate[0] = -1;
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for (i = 1; sets[i]; i++)
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{
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int j;
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duplicate[i] = -1;
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for (j = 0; j < i; j++)
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if (sets[j] == sets[i])
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{
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duplicate[i] = j;
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break;
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}
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}
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tn = 0;
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for (i = 0; sets[i]; i++) {
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if (duplicate[i] >= 0)
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continue;
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off[i] = tn;
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tn += sets[i]->num;
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}
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printf ("#define LEAF0 (%d * sizeof (FcLangCharSet))\n", nsets);
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printf ("#define OFF0 (LEAF0 + %d * sizeof (FcCharLeaf))\n", tl);
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printf ("#define NUM0 (OFF0 + %d * sizeof (uintptr_t))\n", tn);
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printf ("#define SET(n) (n * sizeof (FcLangCharSet) + offsetof (FcLangCharSet, charset))\n");
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printf ("#define OFF(s,o) (OFF0 + o * sizeof (uintptr_t) - SET(s))\n");
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printf ("#define NUM(s,n) (NUM0 + n * sizeof (FcChar16) - SET(s))\n");
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printf ("#define LEAF(o,l) (LEAF0 + l * sizeof (FcCharLeaf) - (OFF0 + o * sizeof (intptr_t)))\n");
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printf ("#define fcLangCharSets (fcLangData.langCharSets)\n");
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printf ("#define fcLangCharSetIndices (fcLangData.langIndices)\n");
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printf ("#define fcLangCharSetIndicesInv (fcLangData.langIndicesInv)\n");
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printf ("\n");
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printf ("static const struct {\n"
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" FcLangCharSet langCharSets[%d];\n"
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" FcCharLeaf leaves[%d];\n"
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" uintptr_t leaf_offsets[%d];\n"
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" FcChar16 numbers[%d];\n"
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" FcChar%s langIndices[%d];\n"
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" FcChar%s langIndicesInv[%d];\n"
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"} fcLangData = {\n",
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nsets, tl, tn, tn,
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nsets < 256 ? "8 " : "16", nsets, nsets < 256 ? "8 " : "16", nsets);
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/*
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* Dump sets
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*/
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printf ("{\n");
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for (i = 0; sets[i]; i++)
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{
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int j = duplicate[i];
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if (j < 0)
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j = i;
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printf (" { \"%s\", "
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" { FC_REF_CONSTANT, %d, OFF(%d,%d), NUM(%d,%d) } }, /* %d */\n",
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langs[i],
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sets[j]->num, i, off[j], i, off[j], i);
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}
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printf ("},\n");
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/*
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* Dump leaves
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*/
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printf ("{\n");
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for (l = 0; l < tl; l++)
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{
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printf (" { { /* %d */", l);
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for (i = 0; i < 256/32; i++)
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{
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if (i % 4 == 0)
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printf ("\n ");
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printf (" 0x%08x,", leaves[l]->map[i]);
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}
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printf ("\n } },\n");
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}
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printf ("},\n");
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/*
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* Dump leaves
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*/
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printf ("{\n");
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for (i = 0; sets[i]; i++)
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{
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int n;
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if (duplicate[i] >= 0)
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continue;
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printf (" /* %s */\n", names[i]);
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for (n = 0; n < sets[i]->num; n++)
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{
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if (n % 4 == 0)
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printf (" ");
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for (l = 0; l < tl; l++)
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if (leaves[l] == FcCharSetLeaf(sets[i], n))
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break;
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if (l == tl)
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fatal (names[i], 0, "can't find leaf");
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printf (" LEAF(%3d,%3d),", off[i], l);
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if (n % 4 == 3)
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printf ("\n");
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}
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if (n % 4 != 0)
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printf ("\n");
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}
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printf ("},\n");
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printf ("{\n");
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for (i = 0; sets[i]; i++)
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{
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int n;
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if (duplicate[i] >= 0)
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continue;
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printf (" /* %s */\n", names[i]);
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for (n = 0; n < sets[i]->num; n++)
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{
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if (n % 8 == 0)
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printf (" ");
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printf (" 0x%04x,", FcCharSetNumbers (sets[i])[n]);
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if (n % 8 == 7)
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printf ("\n");
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}
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if (n % 8 != 0)
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printf ("\n");
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}
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printf ("},\n");
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/* langIndices */
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printf ("{\n");
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for (i = 0; sets[i]; i++)
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{
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printf (" %d, /* %s */\n", entries[i].id, names[i]);
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}
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printf ("},\n");
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/* langIndicesInv */
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printf ("{\n");
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{
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static int entries_inv[MAX_LANG];
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for (i = 0; sets[i]; i++)
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entries_inv[entries[i].id] = i;
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for (i = 0; sets[i]; i++)
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printf (" %d, /* %s */\n", entries_inv[i], names[entries_inv[i]]);
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}
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printf ("}\n");
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printf ("};\n\n");
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printf ("#define NUM_LANG_CHAR_SET %d\n", i);
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num_lang_set_map = (i + 31) / 32;
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printf ("#define NUM_LANG_SET_MAP %d\n", num_lang_set_map);
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/*
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* Dump indices with country codes
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*/
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if (ncountry)
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{
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int c;
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int ncountry_ent = 0;
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printf ("\n");
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printf ("static const FcChar32 fcLangCountrySets[][NUM_LANG_SET_MAP] = {\n");
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for (c = 0; c < ncountry; c++)
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{
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i = country[c];
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if (i >= 0)
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{
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int lang = strchr (langs[i], '-') - langs[i];
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int d, k;
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for (k = 0; k < num_lang_set_map; k++)
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map[k] = 0;
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BitSet (map, i);
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for (d = c + 1; d < ncountry; d++)
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{
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int j = country[d];
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if (j >= 0 && !strncmp (langs[j], langs[i], lang + 1))
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{
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BitSet(map, j);
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country[d] = -1;
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}
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}
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printf (" {");
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for (k = 0; k < num_lang_set_map; k++)
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printf (" 0x%08x,", map[k]);
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printf (" }, /* %*.*s */\n",
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lang, lang, langs[i]);
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++ncountry_ent;
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}
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}
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printf ("};\n\n");
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printf ("#define NUM_COUNTRY_SET %d\n", ncountry_ent);
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}
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/*
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* Find ranges for each letter for faster searching
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*/
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setRangeChar = 'a';
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memset(setRangeStart, '\0', sizeof (setRangeStart));
|
|
memset(setRangeEnd, '\0', sizeof (setRangeEnd));
|
|
for (i = 0; sets[i]; i++)
|
|
{
|
|
char c = names[i][0];
|
|
|
|
while (setRangeChar <= c && c <= 'z')
|
|
setRangeStart[setRangeChar++ - 'a'] = i;
|
|
}
|
|
for (setRangeChar = 'a'; setRangeChar < 'z'; setRangeChar++)
|
|
setRangeEnd[setRangeChar - 'a'] = setRangeStart[setRangeChar+1-'a'] - 1;
|
|
setRangeEnd[setRangeChar - 'a'] = i - 1;
|
|
|
|
/*
|
|
* Dump sets start/finish for the fastpath
|
|
*/
|
|
printf ("\n");
|
|
printf ("static const FcLangCharSetRange fcLangCharSetRanges[] = {\n");
|
|
printf ("\n");
|
|
for (setRangeChar = 'a'; setRangeChar <= 'z' ; setRangeChar++)
|
|
{
|
|
printf (" { %d, %d }, /* %c */\n",
|
|
setRangeStart[setRangeChar - 'a'],
|
|
setRangeEnd[setRangeChar - 'a'], setRangeChar);
|
|
}
|
|
printf ("};\n\n");
|
|
|
|
while (fgets (line, sizeof (line), stdin))
|
|
fputs (line, stdout);
|
|
|
|
fflush (stdout);
|
|
exit (ferror (stdout));
|
|
}
|