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tilde.c

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1/* tilde.c -- Tilde expansion code (~/foo := $HOME/foo). */-
2-
3/* Copyright (C) 1988-2017 Free Software Foundation, Inc.-
4-
5 This file is part of the GNU Readline Library (Readline), a library-
6 for reading lines of text with interactive input and history editing.-
7-
8 Readline is free software: you can redistribute it and/or modify-
9 it under the terms of the GNU General Public License as published by-
10 the Free Software Foundation, either version 3 of the License, or-
11 (at your option) any later version.-
12-
13 Readline is distributed in the hope that it will be useful,-
14 but WITHOUT ANY WARRANTY; without even the implied warranty of-
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the-
16 GNU General Public License for more details.-
17-
18 You should have received a copy of the GNU General Public License-
19 along with Readline. If not, see <http://www.gnu.org/licenses/>.-
20*/-
21-
22#if defined (HAVE_CONFIG_H)-
23# include <config.h>-
24#endif-
25-
26#if defined (HAVE_UNISTD_H)-
27# ifdef _MINIX-
28# include <sys/types.h>-
29# endif-
30# include <unistd.h>-
31#endif-
32-
33#if defined (HAVE_STRING_H)-
34# include <string.h>-
35#else /* !HAVE_STRING_H */-
36# include <strings.h>-
37#endif /* !HAVE_STRING_H */ -
38-
39#if defined (HAVE_STDLIB_H)-
40# include <stdlib.h>-
41#else-
42# include "ansi_stdlib.h"-
43#endif /* HAVE_STDLIB_H */-
44-
45#include <sys/types.h>-
46#if defined (HAVE_PWD_H)-
47#include <pwd.h>-
48#endif-
49-
50#include "tilde.h"-
51-
52#if defined (TEST) || defined (STATIC_MALLOC)-
53static void *xmalloc (), *xrealloc ();-
54#else-
55# include "xmalloc.h"-
56#endif /* TEST || STATIC_MALLOC */-
57-
58#if !defined (HAVE_GETPW_DECLS)-
59# if defined (HAVE_GETPWUID)-
60extern struct passwd *getpwuid PARAMS((uid_t));-
61# endif-
62# if defined (HAVE_GETPWNAM)-
63extern struct passwd *getpwnam PARAMS((const char *));-
64# endif-
65#endif /* !HAVE_GETPW_DECLS */-
66-
67#if !defined (savestring)-
68#define savestring(x) strcpy ((char *)xmalloc (1 + strlen (x)), (x))-
69#endif /* !savestring */-
70-
71#if !defined (NULL)-
72# if defined (__STDC__)-
73# define NULL ((void *) 0)-
74# else-
75# define NULL 0x0-
76# endif /* !__STDC__ */-
77#endif /* !NULL */-
78-
79/* If being compiled as part of bash, these will be satisfied from-
80 variables.o. If being compiled as part of readline, they will-
81 be satisfied from shell.o. */-
82extern char *sh_get_home_dir PARAMS((void));-
83extern char *sh_get_env_value PARAMS((const char *));-
84-
85/* The default value of tilde_additional_prefixes. This is set to-
86 whitespace preceding a tilde so that simple programs which do not-
87 perform any word separation get desired behaviour. */-
88static const char *default_prefixes[] =-
89 { " ~", "\t~", (const char *)NULL };-
90-
91/* The default value of tilde_additional_suffixes. This is set to-
92 whitespace or newline so that simple programs which do not-
93 perform any word separation get desired behaviour. */-
94static const char *default_suffixes[] =-
95 { " ", "\n", (const char *)NULL };-
96-
97/* If non-null, this contains the address of a function that the application-
98 wants called before trying the standard tilde expansions. The function-
99 is called with the text sans tilde, and returns a malloc()'ed string-
100 which is the expansion, or a NULL pointer if the expansion fails. */-
101tilde_hook_func_t *tilde_expansion_preexpansion_hook = (tilde_hook_func_t *)NULL;-
102-
103/* If non-null, this contains the address of a function to call if the-
104 standard meaning for expanding a tilde fails. The function is called-
105 with the text (sans tilde, as in "foo"), and returns a malloc()'ed string-
106 which is the expansion, or a NULL pointer if there is no expansion. */-
107tilde_hook_func_t *tilde_expansion_failure_hook = (tilde_hook_func_t *)NULL;-
108-
109/* When non-null, this is a NULL terminated array of strings which-
110 are duplicates for a tilde prefix. Bash uses this to expand-
111 `=~' and `:~'. */-
112char **tilde_additional_prefixes = (char **)default_prefixes;-
113-
114/* When non-null, this is a NULL terminated array of strings which match-
115 the end of a username, instead of just "/". Bash sets this to-
116 `:' and `=~'. */-
117char **tilde_additional_suffixes = (char **)default_suffixes;-
118-
119static int tilde_find_prefix PARAMS((const char *, int *));-
120static int tilde_find_suffix PARAMS((const char *));-
121static char *isolate_tilde_prefix PARAMS((const char *, int *));-
122static char *glue_prefix_and_suffix PARAMS((char *, const char *, int));-
123-
124/* Find the start of a tilde expansion in STRING, and return the index of-
125 the tilde which starts the expansion. Place the length of the text-
126 which identified this tilde starter in LEN, excluding the tilde itself. */-
127static int-
128tilde_find_prefix (const char *string, int *len)-
129{-
130 register int i, j, string_len;-
131 register char **prefixes;-
132-
133 prefixes = tilde_additional_prefixes;-
134-
135 string_len = strlen (string);-
136 *len = 0;-
137-
138 if (*string == '\0' || *string == '~')
*string == '\0'Description
TRUEevaluated 51 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 55 times by 1 test
Evaluated by:
  • Self test
*string == '~'Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 5 times by 1 test
Evaluated by:
  • Self test
5-55
139 return (0);
executed 101 times by 1 test: return (0);
Executed by:
  • Self test
101
140-
141 if (prefixes)
prefixesDescription
TRUEnever evaluated
FALSEevaluated 5 times by 1 test
Evaluated by:
  • Self test
0-5
142 {-
143 for (i = 0; i < string_len; i++)
i < string_lenDescription
TRUEnever evaluated
FALSEnever evaluated
0
144 {-
145 for (j = 0; prefixes[j]; j++)
prefixes[j]Description
TRUEnever evaluated
FALSEnever evaluated
0
146 {-
147 if (strncmp (string + i, prefixes[j], strlen (prefixes[j])) == 0)
never executed: __result = (((const unsigned char *) (const char *) ( string + i ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
never executed: __result = (((const unsigned char *) (const char *) ( prefixes[j] ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
(__extension__...s[j]) ))) == 0Description
TRUEnever evaluated
FALSEnever evaluated
__builtin_cons...prefixes[j]) )Description
TRUEnever evaluated
FALSEnever evaluated
__builtin_cons...( string + i )Description
TRUEnever evaluated
FALSEnever evaluated
strlen ( strin...refixes[j]) ))Description
TRUEnever evaluated
FALSEnever evaluated
__builtin_cons... prefixes[j] )Description
TRUEnever evaluated
FALSEnever evaluated
strlen ( prefi...refixes[j]) ))Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
148 {-
149 *len = strlen (prefixes[j]) - 1;-
150 return (i + *len);
never executed: return (i + *len);
0
151 }-
152 }
never executed: end of block
0
153 }
never executed: end of block
0
154 }
never executed: end of block
0
155 return (string_len);
executed 5 times by 1 test: return (string_len);
Executed by:
  • Self test
5
156}-
157-
158/* Find the end of a tilde expansion in STRING, and return the index of-
159 the character which ends the tilde definition. */-
160static int-
161tilde_find_suffix (const char *string)-
162{-
163 register int i, j, string_len;-
164 register char **suffixes;-
165-
166 suffixes = tilde_additional_suffixes;-
167 string_len = strlen (string);-
168-
169 for (i = 0; i < string_len; i++)
i < string_lenDescription
TRUEevaluated 71 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 102 times by 1 test
Evaluated by:
  • Self test
71-102
170 {-
171#if defined (__MSDOS__)-
172 if (string[i] == '/' || string[i] == '\\' /* || !string[i] */)-
173#else-
174 if (string[i] == '/' /* || !string[i] */)
string[i] == '/'Description
TRUEevaluated 4 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 67 times by 1 test
Evaluated by:
  • Self test
4-67
175#endif-
176 break;
executed 4 times by 1 test: break;
Executed by:
  • Self test
4
177-
178 for (j = 0; suffixes && suffixes[j]; j++)
suffixesDescription
TRUEevaluated 166 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
suffixes[j]Description
TRUEevaluated 99 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 67 times by 1 test
Evaluated by:
  • Self test
0-166
179 {-
180 if (strncmp (string + i, suffixes[j], strlen (suffixes[j])) == 0)
never executed: __result = (((const unsigned char *) (const char *) ( string + i ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
never executed: __result = (((const unsigned char *) (const char *) ( suffixes[j] ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
(__extension__...s[j]) ))) == 0Description
TRUEnever evaluated
FALSEevaluated 99 times by 1 test
Evaluated by:
  • Self test
__builtin_cons...suffixes[j]) )Description
TRUEnever evaluated
FALSEevaluated 99 times by 1 test
Evaluated by:
  • Self test
__builtin_cons...( string + i )Description
TRUEnever evaluated
FALSEnever evaluated
strlen ( strin...uffixes[j]) ))Description
TRUEnever evaluated
FALSEnever evaluated
__builtin_cons... suffixes[j] )Description
TRUEnever evaluated
FALSEnever evaluated
strlen ( suffi...uffixes[j]) ))Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
0-99
181 return (i);
never executed: return (i);
0
182 }
executed 99 times by 1 test: end of block
Executed by:
  • Self test
99
183 }
executed 67 times by 1 test: end of block
Executed by:
  • Self test
67
184 return (i);
executed 106 times by 1 test: return (i);
Executed by:
  • Self test
106
185}-
186-
187/* Return a new string which is the result of tilde expanding STRING. */-
188char *-
189tilde_expand (const char *string)-
190{-
191 char *result;-
192 int result_size, result_index;-
193-
194 result_index = result_size = 0;-
195 if (result = strchr (string, '~'))
result = (__ex...ring , '~' )))Description
TRUEevaluated 50 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 1 time by 1 test
Evaluated by:
  • Self test
__builtin_constant_p ( '~' )Description
TRUEevaluated 51 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
!__builtin_con...t_p ( string )Description
TRUEevaluated 51 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
( '~' ) == '\0'Description
TRUEnever evaluated
FALSEevaluated 51 times by 1 test
Evaluated by:
  • Self test
0-51
196 result = (char *)xmalloc (result_size = (strlen (string) + 16));
executed 50 times by 1 test: result = (char *)xmalloc (result_size = (strlen (string) + 16));
Executed by:
  • Self test
50
197 else-
198 result = (char *)xmalloc (result_size = (strlen (string) + 1));
executed 1 time by 1 test: result = (char *)xmalloc (result_size = (strlen (string) + 1));
Executed by:
  • Self test
1
199-
200 /* Scan through STRING expanding tildes as we come to them. */-
201 while (1)-
202 {-
203 register int start, end;-
204 char *tilde_word, *expansion;-
205 int len;-
206-
207 /* Make START point to the tilde which starts the expansion. */-
208 start = tilde_find_prefix (string, &len);-
209-
210 /* Copy the skipped text into the result. */-
211 if ((result_index + start + 1) > result_size)
(result_index ... > result_sizeDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 102 times by 1 test
Evaluated by:
  • Self test
4-102
212 result = (char *)xrealloc (result, 1 + (result_size += (start + 20)));
executed 4 times by 1 test: result = (char *)xrealloc (result, 1 + (result_size += (start + 20)));
Executed by:
  • Self test
4
213-
214 strncpy (result + result_index, string, start);-
215 result_index += start;-
216-
217 /* Advance STRING to the starting tilde. */-
218 string += start;-
219-
220 /* Make END be the index of one after the last character of the-
221 username. */-
222 end = tilde_find_suffix (string);-
223-
224 /* If both START and END are zero, we are all done. */-
225 if (!start && !end)
!startDescription
TRUEevaluated 101 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 5 times by 1 test
Evaluated by:
  • Self test
!endDescription
TRUEevaluated 51 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 50 times by 1 test
Evaluated by:
  • Self test
5-101
226 break;
executed 51 times by 1 test: break;
Executed by:
  • Self test
51
227-
228 /* Expand the entire tilde word, and copy it into RESULT. */-
229 tilde_word = (char *)xmalloc (1 + end);-
230 strncpy (tilde_word, string, end);-
231 tilde_word[end] = '\0';-
232 string += end;-
233-
234 expansion = tilde_expand_word (tilde_word);-
235-
236 if (expansion == 0)
expansion == 0Description
TRUEnever evaluated
FALSEevaluated 55 times by 1 test
Evaluated by:
  • Self test
0-55
237 expansion = tilde_word;
never executed: expansion = tilde_word;
0
238 else-
239 xfree (tilde_word);
executed 55 times by 1 test: xfree (tilde_word);
Executed by:
  • Self test
55
240-
241 len = strlen (expansion);-
242#ifdef __CYGWIN__-
243 /* Fix for Cygwin to prevent ~user/xxx from expanding to //xxx when-
244 $HOME for `user' is /. On cygwin, // denotes a network drive. */-
245 if (len > 1 || *expansion != '/' || *string != '/')-
246#endif-
247 {-
248 if ((result_index + len + 1) > result_size)
(result_index ... > result_sizeDescription
TRUEevaluated 6 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 49 times by 1 test
Evaluated by:
  • Self test
6-49
249 result = (char *)xrealloc (result, 1 + (result_size += (len + 20)));
executed 6 times by 1 test: result = (char *)xrealloc (result, 1 + (result_size += (len + 20)));
Executed by:
  • Self test
6
250-
251 strcpy (result + result_index, expansion);-
252 result_index += len;-
253 }-
254 xfree (expansion);-
255 }
executed 55 times by 1 test: end of block
Executed by:
  • Self test
55
256-
257 result[result_index] = '\0';-
258-
259 return (result);
executed 51 times by 1 test: return (result);
Executed by:
  • Self test
51
260}-
261-
262/* Take FNAME and return the tilde prefix we want expanded. If LENP is-
263 non-null, the index of the end of the prefix into FNAME is returned in-
264 the location it points to. */-
265static char *-
266isolate_tilde_prefix (const char *fname, int *lenp)-
267{-
268 char *ret;-
269 int i;-
270-
271 ret = (char *)xmalloc (strlen (fname));-
272#if defined (__MSDOS__)-
273 for (i = 1; fname[i] && fname[i] != '/' && fname[i] != '\\'; i++)-
274#else-
275 for (i = 1; fname[i] && fname[i] != '/'; i++)
fname[i]Description
TRUEevaluated 17 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 10 times by 1 test
Evaluated by:
  • Self test
fname[i] != '/'Description
TRUEevaluated 17 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-17
276#endif-
277 ret[i - 1] = fname[i];
executed 17 times by 1 test: ret[i - 1] = fname[i];
Executed by:
  • Self test
17
278 ret[i - 1] = '\0';-
279 if (lenp)
lenpDescription
TRUEevaluated 10 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-10
280 *lenp = i;
executed 10 times by 1 test: *lenp = i;
Executed by:
  • Self test
10
281 return ret;
executed 10 times by 1 test: return ret;
Executed by:
  • Self test
10
282}-
283-
284#if 0-
285/* Public function to scan a string (FNAME) beginning with a tilde and find-
286 the portion of the string that should be passed to the tilde expansion-
287 function. Right now, it just calls tilde_find_suffix and allocates new-
288 memory, but it can be expanded to do different things later. */-
289char *-
290tilde_find_word (const char *fname, int flags, int *lenp)-
291{-
292 int x;-
293 char *r;-
294-
295 x = tilde_find_suffix (fname);-
296 if (x == 0)-
297 {-
298 r = savestring (fname);-
299 if (lenp)-
300 *lenp = 0;-
301 }-
302 else-
303 {-
304 r = (char *)xmalloc (1 + x);-
305 strncpy (r, fname, x);-
306 r[x] = '\0';-
307 if (lenp)-
308 *lenp = x;-
309 }-
310-
311 return r;-
312}-
313#endif-
314-
315/* Return a string that is PREFIX concatenated with SUFFIX starting at-
316 SUFFIND. */-
317static char *-
318glue_prefix_and_suffix (char *prefix, const char *suffix, int suffind)-
319{-
320 char *ret;-
321 int plen, slen;-
322-
323 plen = (prefix && *prefix) ? strlen (prefix) : 0;
prefixDescription
TRUEevaluated 48 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
*prefixDescription
TRUEevaluated 48 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-48
324 slen = strlen (suffix + suffind);-
325 ret = (char *)xmalloc (plen + slen + 1);-
326 if (plen)
plenDescription
TRUEevaluated 48 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-48
327 strcpy (ret, prefix);
executed 48 times by 1 test: strcpy (ret, prefix);
Executed by:
  • Self test
48
328 strcpy (ret + plen, suffix + suffind);-
329 return ret;
executed 48 times by 1 test: return ret;
Executed by:
  • Self test
48
330}-
331-
332/* Do the work of tilde expansion on FILENAME. FILENAME starts with a-
333 tilde. If there is no expansion, call tilde_expansion_failure_hook.-
334 This always returns a newly-allocated string, never static storage. */-
335char *-
336tilde_expand_word (const char *filename)-
337{-
338 char *dirname, *expansion, *username;-
339 int user_len;-
340 struct passwd *user_entry;-
341-
342 if (filename == 0)
filename == 0Description
TRUEnever evaluated
FALSEevaluated 55 times by 1 test
Evaluated by:
  • Self test
0-55
343 return ((char *)NULL);
never executed: return ((char *) ((void *)0) );
0
344-
345 if (*filename != '~')
*filename != '~'Description
TRUEevaluated 5 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 50 times by 1 test
Evaluated by:
  • Self test
5-50
346 return (savestring (filename));
executed 5 times by 1 test: return (strcpy ((char *)xmalloc (1 + strlen (filename)), (filename)));
Executed by:
  • Self test
5
347-
348 /* A leading `~/' or a bare `~' is *always* translated to the value of-
349 $HOME or the home directory of the current user, regardless of any-
350 preexpansion hook. */-
351 if (filename[1] == '\0' || filename[1] == '/')
filename[1] == '\0'Description
TRUEevaluated 40 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 10 times by 1 test
Evaluated by:
  • Self test
filename[1] == '/'Description
TRUEnever evaluated
FALSEevaluated 10 times by 1 test
Evaluated by:
  • Self test
0-40
352 {-
353 /* Prefix $HOME to the rest of the string. */-
354 expansion = sh_get_env_value ("HOME");-
355#if defined (_WIN32)-
356 if (expansion == 0)-
357 expansion = sh_get_env_value ("APPDATA");-
358#endif-
359-
360 /* If there is no HOME variable, look up the directory in-
361 the password database. */-
362 if (expansion == 0)
expansion == 0Description
TRUEnever evaluated
FALSEevaluated 40 times by 1 test
Evaluated by:
  • Self test
0-40
363 expansion = sh_get_home_dir ();
never executed: expansion = sh_get_home_dir ();
0
364-
365 return (glue_prefix_and_suffix (expansion, filename, 1));
executed 40 times by 1 test: return (glue_prefix_and_suffix (expansion, filename, 1));
Executed by:
  • Self test
40
366 }-
367-
368 username = isolate_tilde_prefix (filename, &user_len);-
369-
370 if (tilde_expansion_preexpansion_hook)
tilde_expansio...expansion_hookDescription
TRUEevaluated 10 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-10
371 {-
372 expansion = (*tilde_expansion_preexpansion_hook) (username);-
373 if (expansion)
expansionDescription
TRUEevaluated 8 times by 1 test
Evaluated by:
  • Self test
FALSEevaluated 2 times by 1 test
Evaluated by:
  • Self test
2-8
374 {-
375 dirname = glue_prefix_and_suffix (expansion, filename, user_len);-
376 xfree (username);-
377 xfree (expansion);-
378 return (dirname);
executed 8 times by 1 test: return (dirname);
Executed by:
  • Self test
8
379 }-
380 }
executed 2 times by 1 test: end of block
Executed by:
  • Self test
2
381-
382 /* No preexpansion hook, or the preexpansion hook failed. Look in the-
383 password database. */-
384 dirname = (char *)NULL;-
385#if defined (HAVE_GETPWNAM)-
386 user_entry = getpwnam (username);-
387#else-
388 user_entry = 0;-
389#endif-
390 if (user_entry == 0)
user_entry == 0Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-2
391 {-
392 /* If the calling program has a special syntax for expanding tildes,-
393 and we couldn't find a standard expansion, then let them try. */-
394 if (tilde_expansion_failure_hook)
tilde_expansion_failure_hookDescription
TRUEnever evaluated
FALSEevaluated 2 times by 1 test
Evaluated by:
  • Self test
0-2
395 {-
396 expansion = (*tilde_expansion_failure_hook) (username);-
397 if (expansion)
expansionDescription
TRUEnever evaluated
FALSEnever evaluated
0
398 {-
399 dirname = glue_prefix_and_suffix (expansion, filename, user_len);-
400 xfree (expansion);-
401 }
never executed: end of block
0
402 }
never executed: end of block
0
403 /* If we don't have a failure hook, or if the failure hook did not-
404 expand the tilde, return a copy of what we were passed. */-
405 if (dirname == 0)
dirname == 0Description
TRUEevaluated 2 times by 1 test
Evaluated by:
  • Self test
FALSEnever evaluated
0-2
406 dirname = savestring (filename);
executed 2 times by 1 test: dirname = strcpy ((char *)xmalloc (1 + strlen (filename)), (filename));
Executed by:
  • Self test
2
407 }
executed 2 times by 1 test: end of block
Executed by:
  • Self test
2
408#if defined (HAVE_GETPWENT)-
409 else-
410 dirname = glue_prefix_and_suffix (user_entry->pw_dir, filename, user_len);
never executed: dirname = glue_prefix_and_suffix (user_entry->pw_dir, filename, user_len);
0
411#endif-
412-
413 xfree (username);-
414#if defined (HAVE_GETPWENT)-
415 endpwent ();-
416#endif-
417 return (dirname);
executed 2 times by 1 test: return (dirname);
Executed by:
  • Self test
2
418}-
419-
420 -
421#if defined (TEST)-
422#undef NULL-
423#include <stdio.h>-
424-
425main (int argc, char **argv)-
426{-
427 char *result, line[512];-
428 int done = 0;-
429-
430 while (!done)-
431 {-
432 printf ("~expand: ");-
433 fflush (stdout);-
434-
435 if (!gets (line))-
436 strcpy (line, "done");-
437-
438 if ((strcmp (line, "done") == 0) ||-
439 (strcmp (line, "quit") == 0) ||-
440 (strcmp (line, "exit") == 0))-
441 {-
442 done = 1;-
443 break;-
444 }-
445-
446 result = tilde_expand (line);-
447 printf (" --> %s\n", result);-
448 free (result);-
449 }-
450 exit (0);-
451}-
452-
453static void memory_error_and_abort (void);-
454-
455static void *-
456xmalloc (size_t bytes)-
457{-
458 void *temp = (char *)malloc (bytes);-
459-
460 if (!temp)-
461 memory_error_and_abort ();-
462 return (temp);-
463}-
464-
465static void *-
466xrealloc (void *pointer, int bytes)-
467{-
468 void *temp;-
469-
470 if (!pointer)-
471 temp = malloc (bytes);-
472 else-
473 temp = realloc (pointer, bytes);-
474-
475 if (!temp)-
476 memory_error_and_abort ();-
477-
478 return (temp);-
479}-
480-
481static void-
482memory_error_and_abort (void)-
483{-
484 fprintf (stderr, "readline: out of virtual memory\n");-
485 abort ();-
486}-
487-
488/*-
489 * Local variables:-
490 * compile-command: "gcc -g -DTEST -o tilde tilde.c"-
491 * end:-
492 */-
493#endif /* TEST */-
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