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/* @(#) $Id: common.h,v 1.28 2005/02/27 12:08:56 yeti Exp $ */
#ifndef COMMON_H
#define COMMON_H 1
#ifndef PACKAGE_NAME
# ifdef HAVE_CONFIG_H
# include "config.h"
# else /* HAVE_CONFIG_H */
# define PACKAGE_NAME "Enca"
# define PACKAGE_TARNAME "enca"
# define PACKAGE_VERSION ""
# define DEFAULT_EXTERNAL_CONVERTER ""
# define DEFAULT_CONVERTER_LIST "built-in"
# endif /* HAVE_CONFIG_H */
#endif /* not PACKAGE_NAME */
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <assert.h>
#include <stdio.h>
#include "../lib/internal.h"
/* define or correctly redefine EXIT_* values */
#if !(defined EXIT_SUCCESS) || (EXIT_SUCCESS != 0)
# define EXIT_SUCCESS 0
# define EXIT_FAILURE 1
#endif /* !(defined EXIT_SUCCESS) || (EXIT_SUCCESS != 0) */
#define EXIT_TROUBLE 2
/* str- an mem- function, theoretically they are all in string.h */
#ifdef HAVE_STRING_H
# include <string.h>
#else /* HAVE_STRING_H */
# ifdef HAVE_STRINGS_H
# include <strings.h>
# endif /* HAVE_STRINGS_H */
#endif /* HAVE_STRING_H */
#ifdef HAVE_MEMORY_H
# include <memory.h>
#endif /* HAVE_MEMORY_H */
#ifdef HAVE_ERRNO_H
# include <errno.h>
#else /* HAVE_ERRNO_H */
extern int errno;
#endif /* HAVE_ERRNO_H */
/* portable isatty(), assume never on tty when neither isatty/ttyname is
available */
#ifdef HAVE_ISATTY
# define enca_isatty(fd) (isatty(fd))
#elif HAVE_TTYNAME
# define enca_isatty (ttyname(fd) != NULL)
#else /* HAVE_ISATTY || HAVE_TTYNAME */
# define enca_isatty (0)
#endif /* HAVE_ISATTY || HAVE_TTYNAME */
/* make sure STDIN_FILENO and STDOUT_FILENO are defined */
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif /* not STDIN_FILENO */
#ifndef STDOUT_FILENO
# define STDOUT_FILENO 1
#endif /* not STDOUT_FILENO */
/* Conversion error codes:
ok
conversion between these encodings is not possible
i/o failure,
child died
converter library is cheating
malformed input,
cannot exec external converter
FIXME: this is an ISO C violation E[a-z0-9]+ are reserved for error names
*/
typedef enum {
ERR_OK = 0,
ERR_CANNOT,
ERR_IOFAIL,
ERR_CHILD,
ERR_LIBCOM,
ERR_MALFORM,
ERR_EXEC = 15
} ConvertErrorCode;
/* Output type. */
typedef enum {
OTYPE_CS2CS = 0,
OTYPE_RFC1345,
OTYPE_HUMAN,
OTYPE_DETAILS,
OTYPE_CANON,
OTYPE_ICONV,
OTYPE_MIME,
OTYPE_CONVERT,
OTYPE_ALIASES
} OutputType;
typedef void *pointer; /* untyped pointer */
typedef const void *cpointer; /* constant untyped pointer */
typedef unsigned char byte; /* byte */
/* Forward type declarations. */
typedef struct _Abbreviation Abbreviation;
typedef struct _Buffer Buffer;
typedef struct _File File;
typedef struct _Options Options;
/* Struct abbreviation. */
struct _Abbreviation {
const char *name; /* full name */
cpointer data; /* corresponding value */
};
/* Struct I/O buffer. */
struct _Buffer {
size_t size; /* buffer size */
ssize_t pos; /* position in buffer */
byte *data; /* the buffer itself buffer */
};
/* Struct file stream. */
struct _File {
char *name; /* file name, NULL if stdin/stdout */
Buffer *buffer; /* buffer for i/o operations */
FILE *stream; /* the stream, NULL when not opened */
off_t size; /* file size, nonsense when name == NULL */
};
/* Struct options. */
struct _Options {
int verbosity_level; /* Verbosity level. */
char *language; /* Language of analysed files. */
OutputType output_type; /* What kind of action is expected after guess. */
EncaEncoding target_enc; /* Target encoding for conversion. */
char *target_enc_str; /* How user specified the target encoding. */
int prefix_filename; /* Do prepend filename: before results? */
};
/* Enca options. */
extern Options options;
/* Path-stripped argv[0] for everybody. */
extern char *program_name;
/* size of the main i/o buffer */
extern size_t buffer_size;
/* Function prototypes. */
Buffer *buffer_new(size_t size);
void buffer_free(Buffer *buf);
const Abbreviation* expand_abbreviation(const char *name,
const Abbreviation *atable,
size_t size,
const char *object_name);
const char* ffname_r(const char *fname);
const char* ffname_w(const char *fname);
ssize_t file_read(File *file);
byte* file_getline(File *file);
ssize_t file_write(File *file);
File* file_temporary(Buffer *buffer,
int ulink);
off_t file_seek(File *file,
off_t offset,
int whence);
int file_truncate(File *file,
off_t length);
int file_unlink(const char *fname);
int file_open(File *file,
const char *mode);
int file_close(File *file);
File* file_new(const char *fname,
Buffer *buffer);
void file_free(File *file);
char** process_opt(int argc,
char *argv[]);
void print_aliases(size_t cs);
OutputType get_output_type(void);
int copy_and_convert (File *file_from,
File *file_to,
const byte *xlat);
const char* format_request_string (EncaEncoding e1,
EncaEncoding e2,
EncaSurface mask);
int convert (File *file,
EncaEncoding from_enc);
int add_converter (const char *cname);
int external_converter_listed (void);
void print_converter_list (void);
void set_requested_enc (EncaEncoding enc);
#ifdef HAVE_LIBRECODE
int convert_recode (File *file,
EncaEncoding from_enc);
#endif /* HAVE_LIBRECODE */
#ifdef HAVE_GOOD_ICONV
int convert_iconv (File *file,
EncaEncoding from_enc);
#endif /* HAVE_GOOD_ICONV */
#ifdef ENABLE_EXTERNAL
int convert_external (File *file,
EncaEncoding from_enc);
void set_external_converter (const char *extc);
int check_external_converter (void);
#endif /* ENABLE_EXTERNAL */
char* detect_lang (const char *lang);
#ifdef HAVE_NL_LANGINFO
const char* get_lang_codeset (void);
#endif /* HAVE_NL_LANGINFO */
#endif /* not COMMON_H */
/* vim: ts=2
*/
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