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shmatch.c

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/bash/src/lib/sh/shmatch.c

Source code

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1 /* -

2 * shmatch.c -- shell interface to posix regular expression matching. -

3 */ -

4 -

6 -

7 This file is part of GNU Bash, the Bourne Again SHell. -

8 -

9 Bash is free software: you can redistribute it and/or modify -

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

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

12 (at your option) any later version. -

13 -

14 Bash is distributed in the hope that it will be useful, -

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

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

17 GNU General Public License for more details. -

18 -

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

20 along with Bash. If not, see <http://www.gnu.org/licenses/>. -

21 */ -

22 -

23 #ifdef HAVE_CONFIG_H -

24 # include <config.h> -

25 #endif -

26 -

27 #if defined (HAVE_POSIX_REGEXP) -

28 -

29 #ifdef HAVE_UNISTD_H -

30 # include <unistd.h> -

31 #endif -

32 -

33 #include "bashansi.h" -

34 -

35 #include <stdio.h> -

36 #include <regex.h> -

37 -

38 #include "shell.h" -

39 #include "variables.h" -

40 #include "externs.h" -

41 -

42 extern int glob_ignore_case, match_ignore_case; -

43 -

44 int -

45 sh_regmatch (string, pattern, flags) -

46 const char *string; -

47 const char *pattern; -

48 int flags; -

49 { -

50 regex_t regex = { 0 }; -

51 regmatch_t *matches; -

52 int rflags; -

53 #if defined (ARRAY_VARS) -

54 SHELL_VAR *rematch; -

55 ARRAY *amatch; -

56 int subexp_ind; -

57 char *subexp_str; -

58 int subexp_len; -

59 #endif -

60 int result; -

61 -

62 #if defined (ARRAY_VARS) -

63 rematch = (SHELL_VAR *)NULL; -

64 #endif -

65 -

66 rflags = REG_EXTENDED; -

if (glob_ignore_case || match_ignore_case)

glob_ignore_case	Description
TRUE	never evaluated
FALSE	evaluated 89 times by 1 test Evaluated by: Self test

match_ignore_case	Description
TRUE	never evaluated
FALSE	evaluated 89 times by 1 test Evaluated by: Self test

0-89

rflags |= REG_ICASE;

never executed: rflags |= (1 << 1) ;

69 #if !defined (ARRAY_VARS) -

70 rflags |= REG_NOSUB; -

71 #endif -

72 -

if (regcomp (&regex, pattern, rflags))

regcomp (&rege...ttern, rflags)	Description
TRUE	evaluated 1 time by 1 test Evaluated by: Self test
FALSE	evaluated 88 times by 1 test Evaluated by: Self test

1-88

return 2; /* flag for printing a warning here. */

executed 1 time by 1 test: return 2;

Executed by:

Self test

75 -

76 #if defined (ARRAY_VARS) -

77 matches = (regmatch_t *)malloc (sizeof (regmatch_t) * (regex.re_nsub + 1)); -

78 #else -

79 matches = NULL; -

80 #endif -

81 -

82 /* man regexec: NULL PMATCH ignored if NMATCH == 0 */ -

if (regexec (&regex, string, matches ? regex.re_nsub + 1 : 0, matches, 0))

regexec (&rege...0, matches, 0)	Description
TRUE	evaluated 35 times by 1 test Evaluated by: Self test
FALSE	evaluated 53 times by 1 test Evaluated by: Self test

35-53

result = EXECUTION_FAILURE;

executed 35 times by 1 test: result = 1;

Executed by:

Self test

85 else -

result = EXECUTION_SUCCESS; /* match */

executed 53 times by 1 test: result = 0;

Executed by:

Self test

87 -

88 #if defined (ARRAY_VARS) -

89 subexp_len = strlen (string) + 10; -

90 subexp_str = malloc (subexp_len + 1); -

91 -

92 /* Store the parenthesized subexpressions in the array BASH_REMATCH. -

93 Element 0 is the portion that matched the entire regexp. Element 1 -

94 is the part that matched the first subexpression, and so on. */ -

95 unbind_variable_noref ("BASH_REMATCH"); -

96 rematch = make_new_array_variable ("BASH_REMATCH"); -

97 amatch = array_cell (rematch); -

98 -

if (matches && (flags & SHMAT_SUBEXP) && result == EXECUTION_SUCCESS && subexp_str)

matches	Description
TRUE	evaluated 88 times by 1 test Evaluated by: Self test
FALSE	never evaluated

(flags & 0x001)	Description
TRUE	evaluated 88 times by 1 test Evaluated by: Self test
FALSE	never evaluated

result == 0	Description
TRUE	evaluated 53 times by 1 test Evaluated by: Self test
FALSE	evaluated 35 times by 1 test Evaluated by: Self test

subexp_str	Description
TRUE	evaluated 53 times by 1 test Evaluated by: Self test
FALSE	never evaluated

0-88

100 { -

101

for (subexp_ind = 0; subexp_ind <= regex.re_nsub; subexp_ind++)

subexp_ind <= regex.re_nsub	Description
TRUE	evaluated 71 times by 1 test Evaluated by: Self test
FALSE	evaluated 53 times by 1 test Evaluated by: Self test

53-71

102 { -

103 memset (subexp_str, 0, subexp_len); -

104 strncpy (subexp_str, string + matches[subexp_ind].rm_so, -

105 matches[subexp_ind].rm_eo - matches[subexp_ind].rm_so); -

106 array_insert (amatch, subexp_ind, subexp_str); -

107

}

executed 71 times by 1 test: end of block

Executed by:

Self test

108

}

executed 53 times by 1 test: end of block

Executed by:

Self test

109 -

110 VSETATTR (rematch, att_readonly); -

111 -

112 free (subexp_str); -

113 free (matches); -

114 #endif /* ARRAY_VARS */ -

115 -

116 regfree (&regex); -

117 -

118

return result;

executed 88 times by 1 test: return result;

Executed by:

Self test

119 } -

120 -

121 #endif /* HAVE_POSIX_REGEXP */ -

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