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filenamecat-lgpl.c

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/home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/filenamecat-lgpl.c

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1 /* Concatenate two arbitrary file names. -

2 -

4 -

5 This program is free software: you can redistribute it and/or modify -

6 it under the terms of the GNU General Public License as published by -

7 the Free Software Foundation; either version 3 of the License, or -

8 (at your option) any later version. -

9 -

10 This program is distributed in the hope that it will be useful, -

11 but WITHOUT ANY WARRANTY; without even the implied warranty of -

12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -

13 GNU General Public License for more details. -

14 -

15 You should have received a copy of the GNU General Public License -

16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ -

17 -

18 /* Written by Jim Meyering. */ -

19 -

20 #include <config.h> -

21 -

22 /* Specification. */ -

23 #include "filenamecat.h" -

24 -

25 #include <stdlib.h> -

26 #include <string.h> -

27 -

28 #include "dirname.h" -

29 -

30 #if ! HAVE_MEMPCPY && ! defined mempcpy -

31 # define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N))) -

32 #endif -

33 -

34 /* Concatenate two file name components, DIR and BASE, in -

35 newly-allocated storage and return the result. -

36 The resulting file name F is such that the commands "ls F" and "(cd -

37 DIR; ls ./BASE)" refer to the same file. If necessary, put -

38 a separator between DIR and BASE in the result. Typically this -

39 separator is "/", but in rare cases it might be ".". -

40 In any case, if BASE_IN_RESULT is non-NULL, set -

41 *BASE_IN_RESULT to point to the copy of BASE at the end of the -

42 returned concatenation. -

43 -

44 Return NULL if malloc fails. */ -

45 -

46 char * -

47 mfile_name_concat (char const *dir, char const *base, char **base_in_result) -

48 { -

49 char const *dirbase = last_component (dir); -

50 size_t dirbaselen = base_len (dirbase); -

51 size_t dirlen = dirbase - dir + dirbaselen; -

52 size_t baselen = strlen (base); -

53 char sep = '\0'; -

if (dirbaselen)

dirbaselen	Description
TRUE	evaluated 132609 times by 7 tests Evaluated by: cp ginstall ln ls mktemp mv tac
FALSE	never evaluated

0-132609

55 { -

56 /* DIR is not a file system root, so separate with / if needed. */ -

if (! ISSLASH (dir[dirlen - 1]) && ! ISSLASH (*base))

! ((dir[dirlen - 1]) == '/')	Description
TRUE	evaluated 132609 times by 7 tests Evaluated by: cp ginstall ln ls mktemp mv tac
FALSE	never evaluated

! ((*base) == '/')	Description
TRUE	evaluated 132609 times by 7 tests Evaluated by: cp ginstall ln ls mktemp mv tac
FALSE	never evaluated

0-132609

sep = '/';

executed 132609 times by 7 tests: sep = '/';

Executed by:

cp
ginstall
ln
ls
mktemp
mv
tac

132609

}

executed 132609 times by 7 tests: end of block

Executed by:

cp
ginstall
ln
ls
mktemp
mv
tac

132609

else if (ISSLASH (*base))

((*base) == '/')	Description
TRUE	never evaluated
FALSE	never evaluated

61 { -

62 /* DIR is a file system root and BASE begins with a slash, so -

63 separate with ".". For example, if DIR is "/" and BASE is -

64 "/foo" then return "/./foo", as "//foo" would be wrong on -

65 some POSIX systems. A fancier algorithm could omit "." in -

66 some cases but is not worth the trouble. */ -

67 sep = '.'; -

}

never executed: end of block

69 -

70 char *p_concat = malloc (dirlen + (sep != '\0') + baselen + 1); -

71 char *p; -

72 -

if (p_concat == NULL)

p_concat == ((void *)0)	Description
TRUE	never evaluated
FALSE	evaluated 132609 times by 7 tests Evaluated by: cp ginstall ln ls mktemp mv tac

0-132609

return NULL;

never executed: return ((void *)0) ;

75 -

76 p = mempcpy (p_concat, dir, dirlen); -

77 *p = sep; -

78 p += sep != '\0'; -

79 -

if (base_in_result)

base_in_result	Description
TRUE	evaluated 28 times by 2 tests Evaluated by: cp ln
FALSE	evaluated 132581 times by 6 tests Evaluated by: cp ginstall ls mktemp mv tac

28-132581

*base_in_result = p;

executed 28 times by 2 tests: *base_in_result = p;

Executed by:

82 -

83 p = mempcpy (p, base, baselen); -

84 *p = '\0'; -

85 -

return p_concat;

executed 132609 times by 7 tests: return p_concat;

Executed by:

cp
ginstall
ln
ls
mktemp
mv
tac

132609

87 } -

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