forked from mia/Aegisub
176 lines
6.9 KiB
C
176 lines
6.9 KiB
C
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/* @(#) $Id: enca.h,v 1.11 2005/02/27 12:08:55 yeti Exp $ */
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/* This header file is in the public domain. */
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#ifndef ENCA_H
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#define ENCA_H
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#include <stdlib.h>
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/* According to autoconf stdlib may not be enough for size_t */
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* Enumerated types */
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typedef enum { /*< flags >*/
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ENCA_SURFACE_EOL_CR = 1 << 0,
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ENCA_SURFACE_EOL_LF = 1 << 1,
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ENCA_SURFACE_EOL_CRLF = 1 << 2,
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ENCA_SURFACE_EOL_MIX = 1 << 3,
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ENCA_SURFACE_EOL_BIN = 1 << 4,
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ENCA_SURFACE_MASK_EOL = (ENCA_SURFACE_EOL_CR
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| ENCA_SURFACE_EOL_LF
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| ENCA_SURFACE_EOL_CRLF
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| ENCA_SURFACE_EOL_MIX
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| ENCA_SURFACE_EOL_BIN),
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ENCA_SURFACE_PERM_21 = 1 << 5,
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ENCA_SURFACE_PERM_4321 = 1 << 6,
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ENCA_SURFACE_PERM_MIX = 1 << 7,
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ENCA_SURFACE_MASK_PERM = (ENCA_SURFACE_PERM_21
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| ENCA_SURFACE_PERM_4321
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| ENCA_SURFACE_PERM_MIX),
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ENCA_SURFACE_QP = 1 << 8,
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ENCA_SURFACE_REMOVE = 1 << 13,
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ENCA_SURFACE_UNKNOWN = 1 << 14,
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ENCA_SURFACE_MASK_ALL = (ENCA_SURFACE_MASK_EOL
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| ENCA_SURFACE_MASK_PERM
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| ENCA_SURFACE_QP
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| ENCA_SURFACE_REMOVE)
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} EncaSurface;
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typedef enum {
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ENCA_NAME_STYLE_ENCA,
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ENCA_NAME_STYLE_RFC1345,
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ENCA_NAME_STYLE_CSTOCS,
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ENCA_NAME_STYLE_ICONV,
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ENCA_NAME_STYLE_HUMAN,
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ENCA_NAME_STYLE_MIME
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} EncaNameStyle;
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typedef enum { /*< flags >*/
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ENCA_CHARSET_7BIT = 1 << 0,
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ENCA_CHARSET_8BIT = 1 << 1,
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ENCA_CHARSET_16BIT = 1 << 2,
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ENCA_CHARSET_32BIT = 1 << 3,
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ENCA_CHARSET_FIXED = 1 << 4,
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ENCA_CHARSET_VARIABLE = 1 << 5,
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ENCA_CHARSET_BINARY = 1 << 6,
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ENCA_CHARSET_REGULAR = 1 << 7,
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ENCA_CHARSET_MULTIBYTE = 1 << 8
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} EncaCharsetFlags;
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typedef enum {
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ENCA_EOK = 0,
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ENCA_EINVALUE,
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ENCA_EEMPTY,
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ENCA_EFILTERED,
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ENCA_ENOCS8,
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ENCA_ESIGNIF,
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ENCA_EWINNER,
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ENCA_EGARBAGE
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} EncaErrno;
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#define ENCA_CS_UNKNOWN (-1)
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#define ENCA_NOT_A_CHAR 0xffff
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/* Published (opaque) typedefs */
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typedef struct _EncaAnalyserState *EncaAnalyser;
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/* Public (transparent) typedefs */
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typedef struct _EncaEncoding EncaEncoding;
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struct _EncaEncoding { int charset; EncaSurface surface; };
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/* Basic interface. */
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EncaAnalyser enca_analyser_alloc (const char *langname);
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void enca_analyser_free (EncaAnalyser analyser);
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EncaEncoding enca_analyse (EncaAnalyser analyser,
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unsigned char *buffer,
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size_t size);
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EncaEncoding enca_analyse_const (EncaAnalyser analyser,
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const unsigned char *buffer,
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size_t size);
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int enca_double_utf8_check (EncaAnalyser analyser,
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const unsigned char *buffer,
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size_t size);
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int* enca_double_utf8_get_candidates (EncaAnalyser analyser);
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int enca_errno (EncaAnalyser analyser);
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const char* enca_strerror (EncaAnalyser analyser,
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int errnum);
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/* Options. */
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void enca_set_multibyte (EncaAnalyser analyser,
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int multibyte);
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int enca_get_multibyte (EncaAnalyser analyser);
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void enca_set_interpreted_surfaces (EncaAnalyser analyser,
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int interpreted_surfaces);
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int enca_get_interpreted_surfaces (EncaAnalyser analyser);
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void enca_set_ambiguity (EncaAnalyser analyser,
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int ambiguity);
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int enca_get_ambiguity (EncaAnalyser analyser);
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void enca_set_filtering (EncaAnalyser analyser,
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int filtering);
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int enca_get_filtering (EncaAnalyser analyser);
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void enca_set_garbage_test (EncaAnalyser analyser,
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int garabage_test);
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int enca_get_garbage_test (EncaAnalyser analyser);
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void enca_set_termination_strictness (EncaAnalyser analyser,
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int termination_strictness);
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int enca_get_termination_strictness (EncaAnalyser analyser);
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int enca_set_significant (EncaAnalyser analyser,
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size_t significant);
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size_t enca_get_significant (EncaAnalyser analyser);
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int enca_set_threshold (EncaAnalyser analyser,
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double threshold);
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double enca_get_threshold (EncaAnalyser analyser);
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/* Names and properties. */
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const char* enca_charset_name (int charset,
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EncaNameStyle whatname);
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const char** enca_get_charset_aliases (int charset,
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size_t *n);
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char* enca_get_surface_name (EncaSurface surface,
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EncaNameStyle whatname);
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EncaEncoding enca_parse_encoding_name (const char *name);
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EncaSurface enca_charset_natural_surface (int charset);
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EncaCharsetFlags enca_charset_properties (int charset);
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#define enca_charset_is_known(cs) \
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((cs) != ENCA_CS_UNKNOWN)
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#define enca_charset_is_7bit(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_7BIT)
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#define enca_charset_is_8bit(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_8BIT)
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#define enca_charset_is_16bit(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_16BIT)
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#define enca_charset_is_32bit(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_32BIT)
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#define enca_charset_is_fixed(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_FIXED)
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#define enca_charset_is_variable(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_VARIABLE)
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#define enca_charset_is_binary(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_BINARY)
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#define enca_charset_is_regular(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_REGULAR)
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#define enca_charset_is_multibyte(cs) \
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(enca_charset_properties(cs) & ENCA_CHARSET_MULTIBYTE)
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/* Auxiliary functions. */
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int enca_charset_has_ucs2_map (int charset);
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int enca_charset_ucs2_map (int charset,
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unsigned int *buffer);
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size_t enca_number_of_charsets (void);
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const char* enca_analyser_language (EncaAnalyser analyser);
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const char* enca_language_english_name (const char *lang);
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const char** enca_get_languages (size_t *n);
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int* enca_get_language_charsets (const char *langname,
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size_t *n);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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