/* * Copyright 2000 Computing Research Labs, New Mexico State University * Copyright 2001-2014 * Francesco Zappa Nardelli * * 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 COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY 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. */ /************************************************************************** * * This file is based on bdf.c,v 1.22 2000/03/16 20:08:50 * * taken from Mark Leisher's xmbdfed package * */ #include <freetype/freetype.h> #include <freetype/internal/ftdebug.h> #include <freetype/internal/ftstream.h> #include <freetype/internal/ftobjs.h> #include "bdf.h" #include "bdferror.h" /************************************************************************** * * The macro FT_COMPONENT is used in trace mode. It is an implicit * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log * messages during execution. */ #undef FT_COMPONENT #define FT_COMPONENT … #define BUFSIZE … /************************************************************************** * * Default BDF font options. * */ static const bdf_options_t bdf_opts_ = …; /************************************************************************** * * Builtin BDF font properties. * */ /* List of most properties that might appear in a font. Doesn't include */ /* the RAW_* and AXIS_* properties in X11R6 polymorphic fonts. */ static const bdf_property_t bdf_properties_[] = …; static const unsigned long num_bdf_properties_ = …; /* An auxiliary macro to parse properties, to be used in conditionals. */ /* It behaves like `strncmp' but also tests the following character */ /* whether it is a whitespace or null. */ /* `property' is a constant string of length `n' to compare with. */ #define _bdf_strncmp( name, property, n ) … /* Auto correction messages. */ #define ACMSG1 … #define ACMSG2 … #define ACMSG3 … #define ACMSG4 … #define ACMSG5 … #define ACMSG6 … #define ACMSG7 … #define ACMSG8 … #define ACMSG9 … #define ACMSG10 … #define ACMSG11 … #define ACMSG13 … #define ACMSG14 … #define ACMSG15 … #define ACMSG16 … #define ACMSG17 … /* Error messages. */ #define ERRMSG1 … #define ERRMSG2 … #define ERRMSG3 … #define ERRMSG4 … #define ERRMSG5 … #define ERRMSG6 … #define ERRMSG7 … #define ERRMSG8 … #define ERRMSG9 … /* Debug messages. */ #define DBGMSG1 … #define DBGMSG2 … /************************************************************************** * * Utility types and functions. * */ /* Function type for parsing lines of a BDF font. */ bdf_line_func_t_; /* List structure for splitting lines into fields. */ bdf_list_t_; /* Structure used while loading BDF fonts. */ bdf_parse_t_; #define setsbit( m, cc ) … #define sbitset( m, cc ) … static void bdf_list_init_( bdf_list_t_* list, FT_Memory memory ) { … } static void bdf_list_done_( bdf_list_t_* list ) { … } static FT_Error bdf_list_ensure_( bdf_list_t_* list, unsigned long num_items ) /* same as bdf_list_t_.used */ { … } static void bdf_list_shift_( bdf_list_t_* list, unsigned long n ) { … } /* An empty string for empty fields. */ static const char empty[] = …; /* XXX eliminate this */ static char * bdf_list_join_( bdf_list_t_* list, int c, unsigned long *alen ) { … } /* The code below ensures that we have at least 4 + 1 `field' */ /* elements in `list' (which are possibly NULL) so that we */ /* don't have to check the number of fields in most cases. */ static FT_Error bdf_list_split_( bdf_list_t_* list, const char* separators, char* line, unsigned long linelen ) { … } #define NO_SKIP … static FT_Error bdf_readstream_( FT_Stream stream, bdf_line_func_t_ callback, void* client_data, unsigned long *lno ) { … } /* XXX: make this work with EBCDIC also */ static const unsigned char a2i[128] = …; static const unsigned char ddigits[32] = …; static const unsigned char hdigits[32] = …; /* Routine to convert a decimal ASCII string to an unsigned long integer. */ static unsigned long bdf_atoul_( const char* s ) { … } /* Routine to convert a decimal ASCII string to a signed long integer. */ static long bdf_atol_( const char* s ) { … } /* Routine to convert a decimal ASCII string to an unsigned short integer. */ static unsigned short bdf_atous_( const char* s ) { … } /* Routine to convert a decimal ASCII string to a signed short integer. */ static short bdf_atos_( const char* s ) { … } /* Routine to compare two glyphs by encoding so they can be sorted. */ FT_COMPARE_DEF( int ) by_encoding( const void* a, const void* b ) { … } static FT_Error bdf_create_property( const char* name, int format, bdf_font_t* font ) { … } static bdf_property_t* bdf_get_property( const char* name, bdf_font_t* font ) { … } /************************************************************************** * * BDF font file parsing flags and functions. * */ /* Parse flags. */ #define BDF_START_ … #define BDF_FONT_NAME_ … #define BDF_SIZE_ … #define BDF_FONT_BBX_ … #define BDF_PROPS_ … #define BDF_GLYPHS_ … #define BDF_GLYPH_ … #define BDF_ENCODING_ … #define BDF_SWIDTH_ … #define BDF_DWIDTH_ … #define BDF_BBX_ … #define BDF_BITMAP_ … #define BDF_SWIDTH_ADJ_ … #define BDF_GLYPH_BITS_ … #define BDF_GLYPH_WIDTH_CHECK_ … #define BDF_GLYPH_HEIGHT_CHECK_ … static FT_Error bdf_add_comment_( bdf_font_t* font, const char* comment, unsigned long len ) { … } /* Set the spacing from the font name if it exists, or set it to the */ /* default specified in the options. */ static FT_Error bdf_set_default_spacing_( bdf_font_t* font, bdf_options_t* opts, unsigned long lineno ) { … } /* Determine whether the property is an atom or not. If it is, then */ /* clean it up so the double quotes are removed if they exist. */ static int bdf_is_atom_( char* line, unsigned long linelen, char** name, char** value, bdf_font_t* font ) { … } static FT_Error bdf_add_property_( bdf_font_t* font, const char* name, char* value, unsigned long lineno ) { … } static const unsigned char nibble_mask[8] = …; static FT_Error bdf_parse_end_( char* line, unsigned long linelen, unsigned long lineno, void* call_data, void* client_data ) { … } /* Actually parse the glyph info and bitmaps. */ static FT_Error bdf_parse_glyphs_( char* line, unsigned long linelen, unsigned long lineno, void* call_data, void* client_data ) { … } /* Load the font properties. */ static FT_Error bdf_parse_properties_( char* line, unsigned long linelen, unsigned long lineno, void* call_data, void* client_data ) { … } /* Load the font header. */ static FT_Error bdf_parse_start_( char* line, unsigned long linelen, unsigned long lineno, void* call_data, void* client_data ) { … } /************************************************************************** * * API. * */ FT_LOCAL_DEF( FT_Error ) bdf_load_font( FT_Stream stream, FT_Memory memory, bdf_options_t* opts, bdf_font_t* *font ) { … } FT_LOCAL_DEF( void ) bdf_free_font( bdf_font_t* font ) { … } FT_LOCAL_DEF( bdf_property_t * ) bdf_get_font_property( bdf_font_t* font, const char* name ) { … } /* END */
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