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api.h
/* libwmf (<libwmf/api.h>): library for wmf conversion Copyright (C) 2000 - various; see CREDITS, ChangeLog, and sources The libwmf Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The libwmf Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the libwmf Library; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef LIBWMF_API_H #define LIBWMF_API_H #include <zlib.h> #include <libwmf/types.h> #ifdef __cplusplus extern "C" { #endif /** * Initializes library */ extern wmf_error_t wmf_api_create (wmfAPI**,unsigned long,wmfAPI_Options*); /** * Possibly completes output, and otherwise frees all allocated memory */ extern wmf_error_t wmf_api_destroy (wmfAPI*); /** * Initializes library - 'lite' interface only */ extern wmf_error_t wmf_lite_create (wmfAPI**,unsigned long,wmfAPI_Options*); /** * Possibly completes output, and otherwise frees all allocated memory - 'lite' interface only */ extern wmf_error_t wmf_lite_destroy (wmfAPI*); /** * Reads the header of the current metafile */ extern wmf_error_t wmf_header_read (wmfAPI*); /** * Scans the current metafile to determine bounding box and resources */ extern wmf_error_t wmf_scan (wmfAPI*,unsigned long,wmfD_Rect*); /** * Plays the current metafile, calling exporter graphics procedures */ extern wmf_error_t wmf_play (wmfAPI*,unsigned long,wmfD_Rect*); /** * Supplies a width and height for the current metafile */ extern wmf_error_t wmf_size (wmfAPI*,float*,float*); /** * Supplies a display (integer-) width and height for the current metafile */ extern wmf_error_t wmf_display_size (wmfAPI*,unsigned int*,unsigned int*,double,double); /** * Sets user defines input stream functions for reading a metafile */ extern wmf_error_t wmf_bbuf_input (wmfAPI*,wmfRead,wmfSeek,wmfTell,void*); /** * Opens a file as the current metafile */ extern wmf_error_t wmf_file_open (wmfAPI*,const char*); /** * Closes the file corresponding to the current metafile */ extern wmf_error_t wmf_file_close (wmfAPI*); /** * Specifies an array of unsigned char as the current metafile */ extern wmf_error_t wmf_mem_open (wmfAPI*,unsigned char*,long); /** * Disassociates array corresponding to the current metafile */ extern wmf_error_t wmf_mem_close (wmfAPI*); /* wmf_stream_create: set FILE stream to 0 to write to memory; * wmf_stream_destroy: returns pointer to memory, if not a FILE stream */ /** * Creates compressed character output file stream */ extern wmfStream* wmf_ztream_create (wmfAPI*,gzFile); /** * Creates uncompressed character output file or memory stream */ extern wmfStream* wmf_stream_create (wmfAPI*,FILE*); /** * Finalizes compressed character output file stream */ extern void wmf_ztream_destroy (wmfAPI*,wmfStream*,char**,unsigned long*); /** * Finalizes uncompressed character output file stream */ extern void wmf_stream_destroy (wmfAPI*,wmfStream*,char**,unsigned long*); /** * Formatted print to character output file stream */ extern int wmf_stream_printf (wmfAPI*,wmfStream*,char*,...); /** * malloc() & attach to library's memory manager */ extern void* wmf_malloc (wmfAPI*,size_t); /** * calloc() & attach to library's memory manager */ extern void* wmf_calloc (wmfAPI*,size_t,size_t); /** * realloc() memory attached to library's memory manager */ extern void* wmf_realloc (wmfAPI*,void*,size_t); /** * free() memory attached to library's memory manager */ extern void wmf_free (wmfAPI*,void*); /** * Detach memory from library's memory manager */ extern void wmf_detach (wmfAPI*,void*); /** * strdup() & attach to library's memory manager */ extern char* wmf_strdup (wmfAPI*,const char*); /** * create concatenation of two strings and attach to library's memory manager */ extern char* wmf_str_append (wmfAPI*,char*,char*); /** * strstr() */ extern char* wmf_strstr (const char*,const char*); /** * Increases size of API's string buffer; returns new size or 0 on error */ extern unsigned long wmf_strbuf_grow (wmfAPI*); /** * Initializes the metafile player (called by wmf_api_create()) */ extern wmf_error_t wmf_player_init (wmfAPI*); /** * Returns the Aldus Checksum of the metafile's header */ extern U16 wmf_aldus_checksum (wmfAPI*); /** * Reads a two-byte sequence from the current metafile, returns U16 */ extern U16 wmf_read_16 (wmfAPI*); /** * Reads a four-byte sequence from the current metafile, returns U32 */ extern U32 wmf_read_32 (wmfAPI*,U16*,U16*); /** * file input (wmf_file_open): fgetc() */ extern int wmf_file_read (void*); /** * file input (wmf_file_open): fseek() */ extern int wmf_file_seek (void*,long); /** * file input (wmf_file_open): ftell() */ extern long wmf_file_tell (void*); /** * memory input (wmf_mem_open): fgetc() equiv. */ extern int wmf_mem_read (void*); /** * memory input (wmf_mem_open): fseek() equiv. */ extern int wmf_mem_seek (void*,long); /** * memory input (wmf_mem_open): ftell() equiv. */ extern long wmf_mem_tell (void*); /* default ztream functions; NOT to be used directly! */ /** * compressed char output (wmf_ztream_create): fputs() */ extern int wmf_stream_zputs (char*,void*); /** * compressed char output (wmf_ztream_create): rewind() */ extern int wmf_stream_rezet (void*); /** * uncompressed char output (wmf_stream_create): fputs() */ extern int wmf_stream_sputs (char*,void*); /* default stream functions; NOT to be used directly! */ /** * uncompressed char output (wmf_stream_create): rewind() */ extern int wmf_stream_reset (void*); /** * Writes message to error stream (use WMF_ERROR macro) */ extern void wmf_error (wmfAPI*,char*,int,char*); /** * Writes message to debug stream (use WMF_DEBUG macro) */ extern void wmf_debug (wmfAPI*,char*,int,char*); /** * Formatted print to debug stream */ extern void wmf_printf (wmfAPI*,char*,...); /** * Asserts on zero expression (use WMF_ASSERT macro) */ extern void wmf_assert (wmfAPI*,char*,int); /** * Outputs library-specific command-line options */ extern char* wmf_help (void); /** * Sets drawing origin in device coordinates */ extern void wmf_set_viewport_origin (wmfAPI*,wmfD_Coord); /** * Sets call-back function, called after every metafile record */ extern void wmf_status_function (wmfAPI*,void*,wmfStatus); /** * Writes to --wmf-write file (which may be WMF or home-made wmfxml) */ extern void wmf_write (wmfAPI*,unsigned long,unsigned int,const char*, char**,const unsigned char*,unsigned long); /** * Open --wmf-write file (which may be WMF or home-made wmfxml) */ extern void wmf_write_begin (wmfAPI*,const char*); /** * Close --wmf-write file (which may be WMF or home-made wmfxml) */ extern void wmf_write_end (wmfAPI*); /** * Initialize a wmfAttributes structure */ extern void wmf_attr_new (wmfAPI*,wmfAttributes*); /** * Clear/Empty a wmfAttributes structure */ extern void wmf_attr_clear (wmfAPI*,wmfAttributes*); /** * Free memory associated with a wmfAttributes structure */ extern void wmf_attr_free (wmfAPI*,wmfAttributes*); /** * Add an name&value to a wmfAttributes structure; returns ptr to value-in-list */ extern const char * wmf_attr_add (wmfAPI*,wmfAttributes*,const char*,const char*); /** * Return value of name in a wmfAttributes structure; returns 0 if name not found */ extern const char * wmf_attr_query (wmfAPI*,wmfAttributes*,const char*); /** * Load wmfxml file and wmf_mem_open() it */ extern wmf_error_t wmf_wmfxml_import (wmfAPI*,const char*); #ifdef __cplusplus } #endif /* Useful defs & macros */ /** * @param Z the API handle * @param M string to send to the error stream via wmf_error() */ #define WMF_ERROR(Z,M) wmf_error (Z,__FILE__,__LINE__,M) #ifdef DEBUG #define WMF_DEBUG(Z,M) wmf_debug (Z,__FILE__,__LINE__,M) #define WMF_ASSERT(Z,M) if (!(M)) wmf_assert (Z,__FILE__,__LINE__) #else /** * @param Z the API handle * @param M string to send to the debug stream via wmf_debug() * * (debug build only) */ #define WMF_DEBUG(Z,M) (void)Z /** * @param Z the API handle * @param M an <expr>, if zero then call wmf_assert() * * (debug build only) */ #define WMF_ASSERT(Z,M) #endif /* Flags to be passed in wmf_api_create: flags to lie in range (1<<0) to (1<<19) */ /** * Option to wmf_api_create() * * use provided [*]alloc/free functions */ #define WMF_OPT_ALLOC (1<<0) /** * Option to wmf_api_create() * * check provided command line for --wmf-<option> */ #define WMF_OPT_ARGS (1<<1) /** * Option to wmf_api_create() * * font directories specified */ #define WMF_OPT_FONTDIRS (1<<2) /** * Option to wmf_api_create() * * font mappings specified */ #define WMF_OPT_FONTMAP (1<<3) /** * Option to wmf_api_create() * * use system fonts, if found */ #define WMF_OPT_SYS_FONTS (1<<4) /** * Option to wmf_api_create() * * use specified XML system fontmap file */ #define WMF_OPT_SYS_FONTMAP (1<<5) /** * Option to wmf_api_create() * * use non-system fonts, if found */ #define WMF_OPT_XTRA_FONTS (1<<6) /** * Option to wmf_api_create() * * use specified XML non-system fontmap file */ #define WMF_OPT_XTRA_FONTMAP (1<<7) /** * Option to wmf_api_create() * * use specified ghostscript fontmap file */ #define WMF_OPT_GS_FONTMAP (1<<8) /** * Option to wmf_api_create() * * write metafile to specified file */ #define WMF_OPT_WRITE (1<<9) /** * Option to wmf_api_create() * * initialize device-layer with supplied function */ #define WMF_OPT_FUNCTION (1<<10) /** * Option to wmf_api_create() * * initialize device-layer with specified module */ #define WMF_OPT_MODULE (1<<11) /** * Option to wmf_api_create() * * check for module also in specified directories */ #define WMF_OPT_MODULE_DIRS (1<<12) /** * Option to wmf_api_create() * * ignore (some) non-fatal errors --wmf-ignore-nonfatal */ #define WMF_OPT_IGNORE_NONFATAL (1<<14) /** * Option to wmf_api_create() * * suppress all error reports --wmf-error */ #define WMF_OPT_NO_ERROR (1<<15) /** * Option to wmf_api_create() * * suppress all debug reports --wmf-debug */ #define WMF_OPT_NO_DEBUG (1<<16) /** * Option to wmf_api_create() * * divert error reports to specified stream */ #define WMF_OPT_LOG_ERROR (1<<17) /** * Option to wmf_api_create() * * divert debug reports to specified stream */ #define WMF_OPT_LOG_DEBUG (1<<18) /** * Option to wmf_api_create() * * emit diagnostic information --wmf-diagnostics */ #define WMF_OPT_DIAGNOSTICS (1<<19) #endif /* ! LIBWMF_API_H */
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