XZ Utils  5.1.0alpha
Functions | Variables
suffix.c File Reference

Checks filename suffix and creates the destination filename. More...

#include "private.h"

Functions

static bool is_dir_sep (char c)
 Test if the char is a directory separator.
static bool has_dir_sep (const char *str)
 Test if the string contains a directory separator.
static size_t test_suffix (const char *suffix, const char *src_name, size_t src_len)
 Checks if src_name has given compressed_suffix.
static char * uncompressed_name (const char *src_name, const size_t src_len)
 Removes the filename suffix of the compressed file.
static void msg_suffix (const char *src_name, const char *suffix)
static char * compressed_name (const char *src_name, size_t src_len)
 Appends suffix to src_name.
char * suffix_get_dest_name (const char *src_name)
 Get the name of the destination file.
void suffix_set (const char *suffix)
 Set a custom filename suffix.

Variables

static char * custom_suffix = NULL

Detailed Description

Checks filename suffix and creates the destination filename.


Function Documentation

static bool is_dir_sep ( char  c)
static

Test if the char is a directory separator.

Referenced by test_suffix().

static bool has_dir_sep ( const char *  str)
static

Test if the string contains a directory separator.

Referenced by compressed_name(), and suffix_set().

static size_t test_suffix ( const char *  suffix,
const char *  src_name,
size_t  src_len 
)
static

Checks if src_name has given compressed_suffix.

Parameters:
suffixFilename suffix to look for
src_nameInput filename
src_lenstrlen(src_name)
Returns:
If src_name has the suffix, src_len - strlen(suffix) is returned. It's always a positive integer. Otherwise zero is returned.

References is_dir_sep().

Referenced by compressed_name(), and uncompressed_name().

static char* uncompressed_name ( const char *  src_name,
const size_t  src_len 
)
static

Removes the filename suffix of the compressed file.

Returns:
Name of the uncompressed file, or NULL if file has unknown suffix.

References message_error(), message_warning(), opt_format, test_suffix(), and xmalloc.

Referenced by suffix_get_dest_name().

static void msg_suffix ( const char *  src_name,
const char *  suffix 
)
static

This message is needed in multiple places in compressed_name(), so the message has been put into its own function.

References message_warning().

Referenced by compressed_name().

static char* compressed_name ( const char *  src_name,
size_t  src_len 
)
static

Appends suffix to src_name.

In contrast to uncompressed_name(), we check only suffixes that are valid for the specified file format.

References has_dir_sep(), message_error(), msg_suffix(), opt_format, test_suffix(), and xmalloc.

Referenced by suffix_get_dest_name().

char* suffix_get_dest_name ( const char *  src_name)

Get the name of the destination file.

Depending on the global variable opt_mode, this tries to find a matching counterpart for src_name. If the name can be constructed, it is allocated and returned (caller must free it). On error, a message is printed and NULL is returned.

References compressed_name(), opt_mode, and uncompressed_name().

void suffix_set ( const char *  suffix)

Set a custom filename suffix.

This function calls xstrdup() for the given suffix, thus the caller doesn't need to keep the memory allocated. There can be only one custom suffix, thus if this is called multiple times, the old suffixes are freed and forgotten.

References has_dir_sep(), message_fatal(), and xstrdup().