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shell.c

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/home/opencoverage/opencoverage/guest-scripts/bash/src/lib/readline/shell.c

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1 /* shell.c -- readline utility functions that are normally provided by -

2 bash when readline is linked as part of the shell. */ -

3 -

5 -

6 This file is part of the GNU Readline Library (Readline), a library -

7 for reading lines of text with interactive input and history editing. -

8 -

9 Readline 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 Readline 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 Readline. If not, see <http://www.gnu.org/licenses/>. -

21 */ -

22 -

23 #define READLINE_LIBRARY -

24 -

25 #if defined (HAVE_CONFIG_H) -

26 # include <config.h> -

27 #endif -

28 -

29 #include <sys/types.h> -

30 -

31 #if defined (HAVE_UNISTD_H) -

32 # include <unistd.h> -

33 #endif /* HAVE_UNISTD_H */ -

34 -

35 #if defined (HAVE_STDLIB_H) -

36 # include <stdlib.h> -

37 #else -

38 # include "ansi_stdlib.h" -

39 #endif /* HAVE_STDLIB_H */ -

40 -

41 #if defined (HAVE_STRING_H) -

42 # include <string.h> -

43 #else -

44 # include <strings.h> -

45 #endif /* !HAVE_STRING_H */ -

46 -

47 #if defined (HAVE_LIMITS_H) -

48 # include <limits.h> -

49 #endif -

50 -

51 #if defined (HAVE_FCNTL_H) -

52 #include <fcntl.h> -

53 #endif -

54 #if defined (HAVE_PWD_H) -

55 #include <pwd.h> -

56 #endif -

57 -

58 #include <stdio.h> -

59 -

60 #include "rlstdc.h" -

61 #include "rlshell.h" -

62 #include "rldefs.h" -

63 -

64 #include "xmalloc.h" -

65 -

66 #if defined (HAVE_GETPWUID) && !defined (HAVE_GETPW_DECLS) -

67 extern struct passwd *getpwuid PARAMS((uid_t)); -

68 #endif /* HAVE_GETPWUID && !HAVE_GETPW_DECLS */ -

69 -

70 #ifndef NULL -

71 # define NULL 0 -

72 #endif -

73 -

74 #ifndef CHAR_BIT -

75 # define CHAR_BIT 8 -

76 #endif -

77 -

78 /* Nonzero if the integer type T is signed. */ -

79 #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) -

80 -

81 /* Bound on length of the string representing an integer value of type T. -

82 Subtract one for the sign bit if T is signed; -

83 302 / 1000 is log10 (2) rounded up; -

84 add one for integer division truncation; -

85 add one more for a minus sign if t is signed. */ -

86 #define INT_STRLEN_BOUND(t) \ -

87 ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \ -

88 + 1 + TYPE_SIGNED (t)) -

89 -

90 /* All of these functions are resolved from bash if we are linking readline -

91 as part of bash. */ -

92 -

93 /* Does shell-like quoting using single quotes. */ -

94 char * -

95 sh_single_quote (char *string) -

96 { -

97 register int c; -

98 char *result, *r, *s; -

99 -

100 result = (char *)xmalloc (3 + (4 * strlen (string))); -

101 r = result; -

102 *r++ = '\''; -

103 -

104

for (s = string; s && (c = *s); s++)

s	Description
TRUE	never evaluated
FALSE	never evaluated

(c = *s)	Description
TRUE	never evaluated
FALSE	never evaluated

105 { -

106 *r++ = c; -

107 -

108

if (c == '\'')

c == '\''	Description
TRUE	never evaluated
FALSE	never evaluated

109 { -

110 *r++ = '\\'; /* insert escaped single quote */ -

111 *r++ = '\''; -

112 *r++ = '\''; /* start new quoted string */ -

113

}

never executed: end of block

114

}

never executed: end of block

115 -

116 *r++ = '\''; -

117 *r = '\0'; -

118 -

119

return (result);

never executed: return (result);

120 } -

121 -

122 /* Set the environment variables LINES and COLUMNS to lines and cols, -

123 respectively. */ -

124 static char setenv_buf[INT_STRLEN_BOUND (int) + 1]; -

125 static char putenv_buf1[INT_STRLEN_BOUND (int) + 6 + 1]; /* sizeof("LINES=") == 6 */ -

126 static char putenv_buf2[INT_STRLEN_BOUND (int) + 8 + 1]; /* sizeof("COLUMNS=") == 8 */ -

127 -

128 void -

129 sh_set_lines_and_columns (int lines, int cols) -

130 { -

131 #if defined (HAVE_SETENV) -

132 sprintf (setenv_buf, "%d", lines); -

133 setenv ("LINES", setenv_buf, 1); -

134 -

135 sprintf (setenv_buf, "%d", cols); -

136 setenv ("COLUMNS", setenv_buf, 1); -

137 #else /* !HAVE_SETENV */ -

138 # if defined (HAVE_PUTENV) -

139 sprintf (putenv_buf1, "LINES=%d", lines); -

140 putenv (putenv_buf1); -

141 -

142 sprintf (putenv_buf2, "COLUMNS=%d", cols); -

143 putenv (putenv_buf2); -

144 # endif /* HAVE_PUTENV */ -

145 #endif /* !HAVE_SETENV */ -

146

}

never executed: end of block

147 -

148 char * -

149 sh_get_env_value (const char *varname) -

150 { -

151

return ((char *)getenv (varname));

never executed: return ((char *)getenv (varname));

152 } -

153 -

154 char * -

155 sh_get_home_dir (void) -

156 { -

157 static char *home_dir = (char *)NULL; -

158 struct passwd *entry; -

159 -

160

if (home_dir)

home_dir	Description
TRUE	never evaluated
FALSE	never evaluated

161

return (home_dir);

never executed: return (home_dir);

162 -

163 home_dir = (char *)NULL; -

164 #if defined (HAVE_GETPWUID) -

165 # if defined (__TANDEM) -

166 entry = getpwnam (getlogin ()); -

167 # else -

168 entry = getpwuid (getuid ()); -

169 # endif -

170

if (entry)

entry	Description
TRUE	never evaluated
FALSE	never evaluated

171

home_dir = savestring (entry->pw_dir);

never executed: home_dir = strcpy ((char *)xmalloc (1 + strlen (entry->pw_dir)), (entry->pw_dir));

172 #endif -

173 -

174 #if defined (HAVE_GETPWENT) -

175 endpwent (); /* some systems need this */ -

176 #endif -

177 -

178

return (home_dir);

never executed: return (home_dir);

179 } -

180 -

181 #if !defined (O_NDELAY) -

182 # if defined (FNDELAY) -

183 # define O_NDELAY FNDELAY -

184 # endif -

185 #endif -

186 -

187 int -

188 sh_unset_nodelay_mode (int fd) -

189 { -

190 #if defined (HAVE_FCNTL) -

191 int flags, bflags; -

192 -

193

if ((flags = fcntl (fd, F_GETFL, 0)) < 0)

(flags = fcntl...d, 3 , 0)) < 0	Description
TRUE	never evaluated
FALSE	never evaluated

194

return -1;

never executed: return -1;

195 -

196 bflags = 0; -

197 -

198 #ifdef O_NONBLOCK -

199 bflags |= O_NONBLOCK; -

200 #endif -

201 -

202 #ifdef O_NDELAY -

203 bflags |= O_NDELAY; -

204 #endif -

205 -

206

if (flags & bflags)

flags & bflags	Description
TRUE	never evaluated
FALSE	never evaluated

207 { -

208 flags &= ~bflags; -

209

return (fcntl (fd, F_SETFL, flags));

never executed: return (fcntl (fd, 4 , flags));

210 } -

211 #endif -

212 -

213

return 0;

never executed: return 0;

214 } -

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