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/*
To compile as a standalone program:
gcc -Wall -g -I../.. -DHAVE_CONFIG_H -DSTANDALONE -o abs_path abs_path.c
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
# define __CDIO_CONFIG_H__ 1
#endif
#include "cdio_private.h"
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_STDIO_H
# include <stdio.h>
#endif
#ifndef PATH_MAX
# define PATH_MAX 4096
#endif
#ifndef NULL
# define NULL 0
#endif
#ifdef __CYGWIN__
# undef DOSISH
#endif
#if defined __CYGWIN__ || defined DOSISH
# define DOSISH_UNC
# define DOSISH_DRIVE_LETTER
# define FILE_ALT_SEPARATOR '\\'
#endif
#ifndef CDIO_FILE_SEPARATOR
# define CDIO_FILE_SEPARATOR '/'
#endif
#if defined __CYGWIN__ || defined DOSISH
# define FILE_ALT_SEPARATOR '\\'
#endif
#ifdef CDIO_FILE_ALT_SEPARATOR
# define isdirsep(x) ((x) == CDIO_FILE_SEPARATOR || (x) == CDIO_FILE_ALT_SEPARATOR)
#else
# define isdirsep(x) ((x) == CDIO_FILE_SEPARATOR)
#endif
#define skipprefix(path) (path)
#if !defined(CharNext) || defined(_MSC_VER) /* defined as CharNext[AW] on Windows. */
# undef CharNext
# define CharNext(p) ((p) + 1)
#endif
#ifndef HAVE_STRNDUP
static inline char *strndup(const char *s, size_t n)
{
char *result;
size_t len = strlen (s);
if (n < len)
len = n;
result = (char *) malloc (len + 1);
if (!result)
return 0;
result[len] = '\0';
return (char *) strncpy (result, s, len);
}
#endif /*HAVE_STRNDUP*/
static char *
strrdirsep(const char *path)
{
char *last = NULL;
while (*path) {
if (isdirsep(*path)) {
const char *tmp = path++;
while (isdirsep(*path)) path++;
if (!*path) break;
last = (char *)tmp;
}
else {
path = CharNext(path);
}
}
return last;
}
const char * cdio_dirname(const char *fname);
const char *
cdio_dirname(const char *fname)
{
const char *p;
p = strrdirsep(fname);
if (!p) return ".";
return strndup(fname, p - fname);
}
const char *cdio_abspath(const char *cwd, const char *fname);
/* If fname isn't absolute, add cwd to it. */
const char *
cdio_abspath(const char *cwd, const char *fname)
{
if (isdirsep(*fname)) return fname;
{
size_t len = strlen(cwd) + strlen(fname) + 2;
char* result = calloc(sizeof(char), len);
snprintf(result, len, "%s%c%s",
cwd, CDIO_FILE_SEPARATOR, fname);
return result;
}
}
#ifdef STANDALONE
int main(int argc, char **argv)
{
const char *dest;
const char *dirname;
if (argc != 3) {
fprintf(stderr, "Usage: %s FILE REPLACE_BASENAME\n", argv[0]);
fprintf(stderr,
" Make PATH absolute\n");
exit(1);
}
dirname = cdio_dirname(argv[1]);
dest = cdio_abspath (dirname, argv[2]);
printf("%s -> %s\n", argv[1], dest);
exit(0);
}
#endif
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